CN104276196B - Perambulator - Google Patents

Abstract

The present invention provides a stroller (10) having a locking mechanism (88) for operating a locking member (130) that limits rotation of a wheel. The switching mechanism has: a first switching part (75), which is arranged on the handle and can move with the swing of the handle; a second switching part (80), which is supported on the rear leg, can move relative to the rear leg with the swing of the handle; Leg action; transmission mechanism (87), which transmits the action of the second switching member to the locking member. The first switching part has a cam abutment surface (76) that abuts against the second switching part during action, and the second switching part has a cam contact piece (81) that contacts the cam abutment surface, and the cam contact piece is in contact with the cam. The contact position of the joints changes with the swing of the handle.

Description

stroller

technical field

The present invention relates to a stroller with a handle that can swing between a position inclined forward and a position inclined backward.

Background technique

In the prior art, a stroller is known in which the handle can be tilted in a first position (rear push position) to the rear of the vertical axis and to the front of the vertical axis when viewed from the side. Swing between the inclined second position (face-to-face push position), when considering the maneuverability of this stroller, the wheel holding unit as so-called castors is used on the front and rear legs, and the wheel holding unit has : the rotating body, which supports the rotation of the wheel; the fixed body, which supports the rotation of the rotating body centering on an axis not parallel to the rotation axis of the wheel, and is preferably installed on the wheel holding unit on the front side leg in the direction of travel The rotator is rotatable relative to the fixed body, and the rotatable body of the wheel holding unit mounted on the rear side leg in the traveling direction is restricted from being rotatable relative to the fixed body. Furthermore, the stroller disclosed in JP2008-254693A is provided with a switching mechanism capable of automatically switching between a state in which the rotating body can rotate relative to the fixed body and a state in which it cannot rotate according to the position of the handle.

Such a switching mechanism is very useful, but its structure is complicated, which may lead to an increase in size and weight.

Contents of the invention

In view of the above circumstances, an object of the present invention is to provide a stroller with a small switching mechanism.

The stroller according to the present invention has a stroller body, a handle, a wheel holding unit, wherein,

The stroller body has front legs and rear legs,

The handle is connected to the main body of the stroller and can swing relative to the main body of the stroller,

A wheel holding unit is provided on at least one of the front leg and the rear leg, having:

wheel;

a rotating body supporting the wheel so as to be rotatable;

a fixed body mounted on at least one of the front leg and the rear leg, and supporting the rotary body so as to be rotatable centering on an axis non-parallel to the rotation axis of the wheel;

a locking part, which can move between a locking position and a locking release position, when the locking part is in the locking position, the rotating body is restricted from rotating relative to the fixed body; when the locking part is in the locking release position, the The rotating body can rotate relative to the fixed body,

A switching mechanism is provided on the stroller, and the switching mechanism moves the locking member from the unlocked position to the locked position or from the locked position according to the swing of the handle relative to the main body of the stroller. position moves toward the unlocked position,

The switching mechanism has:

a first switching component, which is arranged on the handle and can move with the swing of the handle;

a second switching member supported on the rear leg and capable of moving relative to the rear leg as the first switching member moves;

a transmission mechanism that transmits the action of the second switching member to the locking member,

The first switching member has a cam abutting surface, and when the cam abutting surface moves with the swing of the handle, it abuts against the second switching member so that the second switching member is relatively opposite to the second switching member. Describe the rear leg action,

The second switching member has a cam contact piece in contact with the cam contact surface, and a position of the cam contact piece in contact with the cam contact surface changes as the handle swings.

The baby carriage involved in the present invention can adopt the following structure:

When the handle swings in a certain direction relative to the main body of the stroller, the position of the cam contact piece in contact with the cam abutment surface moves from the upstream side to the downstream side in the moving path of the cam abutment surface. side changes.

The baby carriage involved in the present invention can adopt the following structure:

The handle can swing between a first position and a second position relative to the stroller body,

When the handle is located at the first position, the cam abutment surface is arranged such that it abuts against the cam only when the handle swings from the first position to the second position. In the position where a part of the part of the surface contacting the cam contact piece faces; when the handle is in the second position, the cam abutment surface is arranged so that it is located only with the handle by the In the process of swinging from the first position to the second position, the cam abutment surface is in contact with a part of the cam contact piece. The baby carriage involved in the present invention can adopt the following structure:

The cam contact piece has at least two cam contact protrusions protruding toward the cam abutment surface, and the cam contact protrusions are arranged along a movement path formed by the cam abutment surface as the handle swings. on separate positions.

The baby carriage involved in the present invention can adopt the following structure:

The handle can swing between a first position and a second position relative to the stroller body,

When the handle is at a certain position between the first position and the second position, the cam abutment surface is simultaneously in contact with two cam contact protrusions arranged adjacently along its moving path.

The baby carriage involved in the present invention can adopt the following structure:

The handle can swing between a first position and a second position relative to the stroller body,

The cam contact piece is composed of two cam contact protrusions protruding toward the cam abutment surface, that is, it has a first cam contact protrusion and a second cam contact protrusion, and the first cam contact protrusion is located on the cam contact surface. When the handle moves from the first position to the second position, the upstream side of the moving path of the cam abutment surface, and the second cam contact protrusion is located at the side of the cam abutment surface. on the downstream side of the moving path,

When the handle is located at the first position, the cam abutment surface is in contact with only the first cam contact protrusion of the first cam contact protrusion and the second cam contact protrusion. to face and touch,

When the handle is located at the second position, the cam abutment surface is in contact with only the second cam contact protrusion of the first cam contact protrusion and the second cam contact protrusion. face and touch it.

The baby carriage involved in the present invention can adopt the following structure:

When the handle is located at a first intermediate position between the first position and the second position, the cam abutment surface and the first cam contact protrusion and the second cam contact protrusion Both are facing each other and are only in contact with the first cam contact protrusion;

When the handle is located at a second intermediate position between the first position and the second position, the cam abutment surface and the first cam contact protrusion and the second cam contact protrusion Both of them face each other and are only in contact with the second cam contact protrusion.

The baby carriage involved in the present invention can adopt the following structure:

When the handle is at a position between the first intermediate position and the second intermediate position, the cam abutment surface is in contact with the first cam contact protrusion and the second cam contact protrusion. Both are in contact.

The baby carriage involved in the present invention can adopt the following structure:

When viewed along the swing axis of the handle relative to the stroller body, the straight-line distance from the swing axis of the handle relative to the stroller body to each position of the cam abutment surface is determined by the cam abutment surface. One end on the contact surface gradually becomes longer to the other end on the cam contact surface, wherein one end on the cam contact surface is the moving direction of the handle when it swings from the first position to the second position and the other end on the contact surface of the cam is the rear side in the moving direction when the handle swings from the first position to the second position,

Moreover, when the handle is located at the second position, the straight-line distance from the swing axis of the handle relative to the stroller body to the second cam contact protrusion is greater than the linear distance from the handle relative to the stroller body. The linear distance from the center of swing of the stroller body to the first cam contact protrusion is short.

The baby carriage involved in the present invention can adopt the following structure:

When viewed along the swing center of the handle relative to the stroller body, the linear distance from the swing center of the handle relative to the stroller body to each position of the cam abutment surface is determined by the cam One end on the abutting surface gradually becomes longer to the other end on the cam abutting surface, wherein one end on the cam abutting surface is the movement of the handle when it swings from one side to the other within the swingable range. the front side in the direction, and the other end on the abutting surface of the cam is the rear side in the moving direction when the handle swings from one side to the other side within the swingable range,

Furthermore, the width of the cam contact surface formed in a direction parallel to the swing axis of the handle extends from one end of the cam contact surface to the other end of the cam contact surface on the rear side in the moving direction. One end gradually becomes larger.

According to the present invention, the switching mechanism can be miniaturized.

Description of drawings

FIG. 1 is a diagram for explaining one embodiment of the present invention, and is also a perspective view showing a stroller in a state where a backrest of a seat is raised and a handle is located at a first position.

Fig. 2 is a perspective view showing the stroller shown in Fig. 1 in a state where the backrest of the seat is folded down and the handle is located at the second position.

3 is a perspective view showing the baby carriage shown in FIG. 1 with the seat removed in a state in which the back support member of the seat support unit is upright and the handle is at the first position.

4 is a perspective view showing the baby carriage shown in FIG. 2 with the seat removed in a state in which the back support member of the seat support unit is laid down and the handle is located at the second position.

Fig. 5 is a side view of the stroller shown in Fig. 3 .

Fig. 6 is a side view of the stroller shown in Fig. 4 .

Fig. 7 is a side view showing the folded state of the infant shown in Fig. 1 with the seat removed.

Fig. 8 is a diagram showing a part of the baby carriage centering on the seat support unit, and is also a side sectional view of the baby carriage in the state shown in Fig. 3 .

9 is a diagram showing a part of the baby carriage centering on the seat support unit, and is a side sectional view of the baby carriage in a state where the backrest support member of the seat support unit is laid down.

Fig. 10 is a perspective view showing a seat support unit.

Fig. 11 is a perspective view showing a connection portion between the seat support unit and the main body frame viewed from the inside in the width direction.

12 is a perspective view showing a connecting portion of the seat support unit and the main body frame viewed from the inside in the width direction.

13 is a cross-sectional view showing a connection portion of the seat support unit and the main body frame cut along the width direction.

Fig. 14 is a partial perspective view showing a connecting portion between the handle and the stroller main body viewed from the outside in the width direction.

Fig. 15 is a side view showing a connection portion between the handle and the main body of the stroller viewed from the widthwise outer side.

Fig. 16 is a perspective view showing a connecting portion between the handle and the main body of the stroller viewed from the outside in the width direction.

Fig. 17 is a schematic side view of the connecting portion between the handle and the main body of the stroller viewed from the outside in the width direction, and is also a diagram for explaining the operation of the switching mechanism.

Fig. 18 is a schematic side view of the connecting portion between the handle and the main body of the stroller viewed from the outside in the width direction, and is also a diagram for explaining the operation of the switching mechanism.

Fig. 19 is a schematic side view of the connecting portion between the handle and the main body of the stroller viewed from the outside in the width direction, and is also a diagram for explaining the operation of the switching mechanism.

Fig. 20 is a schematic side view showing the connecting portion between the handle and the main body of the stroller viewed from the outside in the width direction, and is also a diagram for explaining the operation of the switching mechanism.

Fig. 21 is a schematic side view showing the connecting portion between the handle and the main body of the stroller viewed from the outside in the width direction, and is also a diagram for explaining the operation of the switching mechanism.

Fig. 22 is a perspective view showing the wheel holding unit in a state where a single wheel is removed.

Fig. 23 is a side view showing the wheel holding unit in a state where the wheel is removed.

Fig. 24 is a perspective view showing a second elastic structure of the wheel holding unit.

Fig. 25 is a cross-sectional view of the wheel holding unit taken along line XXIII-XXIII in Fig. 23, and is also a view for explaining the operation of the locking member.

Fig. 26 is the same sectional view as Fig. 25, and is also a view for explaining the operation of the lock member.

Fig. 27 is a perspective view showing a locking member.

Fig. 28 is a plan view showing a state in which the seat is unfolded.

Fig. 29 is a side view showing the seat supported by the seat support unit shown in Fig. 8 .

Fig. 30 is a side view showing the seat supported by the seat support unit shown in Fig. 9 .

Figure 31 is a perspective view of the base plate and the back plate that make up the storage basket when viewed from the front top.

Fig. 32 is the stereogram when seeing the bottom plate and the back plate that form storage basket from the bottom of the back.

Detailed ways

Next, specific embodiments of the present invention will be described with reference to the drawings. 1 to 32 are diagrams for explaining one embodiment of the stroller of the present invention.

<Approximate structure of the stroller>

1 to 32 show the overall structure of the stroller 10 according to this embodiment. The illustrated stroller 10 has: a stroller main body 11 having a main body frame 15 and a seat support unit 40 supported by the main body frame 15; a seat 150 mounted on the seat support unit 40; The stroller main body 11 is connected; the wheel holding unit 100 is mounted on the front leg 20 and the rear leg 21 of the main body frame 15 ; and the storage basket 90 is supported by the stroller main body 11 . As the seat 150 , a known member having elasticity can be used, and it is preferable that the seat 150 can be attached to and detached from the seat support unit 40 . Babies can sit or lie on the seat 150 . In addition, although not shown, a canopy may be provided on the stroller 10 .

As shown in FIG. 7 , the stroller 10 in this embodiment can be folded so that the front legs 20 , the rear legs 21 , and the handle 70 are close to each other. Most of the structural components of the stroller body 11 are hinged to enable folding. In addition, the seat 150 is formed using a soft cloth material or the like, and can be deformed according to the folding operation of the stroller 10 .

In addition, in this embodiment, the handle 70 is connected to the stroller main body 11 and can swing relative to the stroller main body 11 . The handle 70 can be positioned between the first position (rear push position, rear position) shown in Fig. 1, Fig. 3 and Fig. 5 and the second position (face-to-face push position, front position) shown in Fig. 2, Fig. 4 and Fig. 6 swing between. Therefore, the operator (guardian) can hold the handle 70 from the back side of the infant, control the stroller 10, and make the stroller 10 advance. At this time, the infant faces the front of the traveling direction. The infant's front leg side holds the handle 70 to control the stroller so that the stroller 10 travels. At this time, the rear leg side of the stroller 10 is forward in the traveling direction.

The wheel holding unit 100 mounted on at least one of the front leg 20 and the rear leg 21 is constituted as a so-called caster, and the wheel holding unit 100 has: a rotating body 110 which holds the wheel 101 in a rotatable manner; The body 105 supports the rotation of the rotating body 110 around an axis not parallel to the rotation axis Ar of the wheel 101 (referred to as "caster axis Ac"). In addition, a switching structure 88 is provided on the stroller 10, and the switching mechanism 88 can automatically make the rotating body 110 of the wheel holding unit 100 between the state of being able to rotate relative to the fixed body 105 and the state of being unable to rotate according to the position of the handle 70. switch between. Especially in this embodiment, the wheel holding unit 100 configured as a caster is provided on the front leg 20 and the rear leg 21, and the switching mechanism 88 can be installed on the front side in the direction of travel according to the position of the handle 70. The rotating body 110 of the wheel holding unit 100 on the leg of the leg rotates around the caster axis Ac with respect to the fixed body 105, and the rotation of the wheel holding unit 100 mounted on the leg on the rear side in the direction of travel can be restricted. The body 110 rotates about the caster axis Ac with respect to the fixed body 105 .

In addition, in this specification, the terms "front", "rear", "upper" and "lower" of the stroller 10 and its structural components mean that the baby stroller 10 in the unfolded state is seated unless otherwise specified. "Front", "Rear", "Up" and "Down" are based on the infants and young children on the top. Therefore, the "front-rear direction" corresponds to the direction connecting the lower left side and the upper right side on the paper in FIGS. 1 to 4 , and corresponds to the direction connecting the left and right on the paper in FIGS. 5 and 6 . And, as long as there is no special instruction, "front" means the side that the infants and young children of the car are facing, and the lower left side on the paper of Fig. 1 to Fig. 4 and the left side on the paper of Fig. 5 and Fig. 6 represent " front side". In addition, the "up and down direction" means a direction perpendicular to the front-rear direction and perpendicular to the surface (floor) on which the stroller 10 is placed. Therefore, when the surface on which the stroller 10 is placed is a horizontal plane, the "up and down direction" means a vertical direction. In addition, "horizontal direction" and "width direction" mean the direction perpendicular|vertical to any of the "front-back direction" and "up-and-down direction". In addition, "right" and "left" mean "right" and "left" in the lateral direction or the width direction with respect to the infant riding on the stroller 10, respectively.

As shown in the figure, the stroller 10 has a generally symmetrical structure centering on a center plane in the width direction extending in the front-rear direction. Next, each component of the stroller 10 in the present embodiment will be described with reference to the drawings.

<Pram main body and handle>

The stroller main body 11 has a main body frame 15 having front legs 20 and rear legs 21 , and a seat support unit 40 connected to the main body frame 15 through the shaft member 13 . The seat support unit 40 is attached to the main body frame 15 via the shaft member 13 so as to be rotatable relative to the main body frame 15 . Accordingly, the seat support unit 40 can move relative to the main body frame 15 in accordance with the folding operation and unfolding operation of the stroller 10 . The direction in which the seat support unit 40 is located with respect to the rotation center of the main body frame 15 coincides with the axial direction da of the shaft member 13 , and is particularly parallel to the width direction of the stroller 10 in the illustrated example. In addition, in this embodiment, the handle 70 is attached to the stroller main body 10 through the shaft member 13 so as to be able to swing. The direction in which the handle 70 is located with respect to the rotation center of the stroller main body 11 coincides with the axial direction da of the shaft member 13 so as to be parallel to the width direction of the stroller 10 . First, the seat support unit 40 of the stroller main body 11 will be described, then the main body frame 15 of the stroller main body 11 will be described, and then the handle 70 will be described.

<Seat support unit 40>

As shown in Figures 2, 3, and 8 to 10, the seat support unit 40 includes: a seat support member 50, which faces the buttocks of an infant riding in the stroller 10 from below; 60, which faces the back of an infant riding in the stroller 10 from the rear. The back support member 60 is swingable (tiltable) relative to the seat support member 50 . Thereby, the reclining action of the stroller 10 is realized. In addition, the reclining angle of the back support member 60 is controlled by adjusting a reclining adjustment belt (not shown), which passes through the back of the back support member 60 and is installed on the main body frame 15 .

The seat portion support member 50 has a pair of rear connection portions 54 disposed at a distance from each other in the width direction on its rear portion. In addition, the backrest support member 60 has a pair of lower connecting portions 62 disposed at a distance from each other in the width direction on its lower portion. The left rear connecting portion 54 is engaged with the left lower connecting portion 62 , and the right rear connecting portion 54 is engaged with the right lower connecting portion 62 . The back support member 60 is connected to the seat support member 50 by engagement of the rear connection portion 54 and the lower connection portion 62 and is swingable relative to the seat support member 50 . In the illustrated example, the pair of rear connecting portions 54 are located on the inside of the pair of lower connecting portions 62 in the width direction, but the present invention is not limited to this example. The inner side of the width direction of the portion 54.

As shown in FIG. 13 , a through hole 50 a and a through hole 60 a through which the shaft member 13 passes are respectively formed in the rear connecting portion 54 and the lower connecting portion 62 . As shown in FIGS. 10 to 12 , a pair of shaft members 13 are arranged away from each other in the width direction. Each shaft member 13 extends through the through hole 50 a and the through hole 60 a of the rear connecting portion 54 and the lower connecting portion 62 on the corresponding side.

In addition, the lower connecting portion 62 is provided with a protrusion (first protrusion) 62 a that is provided on a circumference centered on the axial direction da of the shaft member 13 and protrudes in the axial direction da. The protrusion 62a has a convex surface (outer surface) located on the entire circumference or a part of the circumference centered on the axial direction da. In addition, a protrusion receiving portion 54 a that receives the protrusion surface 62 a 1 of the protrusion 62 a is formed on the rear connecting portion 54 . The protrusion receiving portion 54 a has a protrusion receiving surface 54 a 1 located on the entire circumference or a part of the circumference centered on the axial direction da of the shaft member 13 . When the rear connection part 54 and the lower connection part 62 rotate relative to each other, the protrusion surface 62a1 of the protrusion 62a and the protrusion receiving surface 54a1 of the protrusion receiving part 54a slide relative to each other. In this way, the protrusion 62 a engages with the protrusion receiving portion 54 a, so that the back support member 60 can swing relative to the seat support member 50 . In particular, since the protrusion 62a extends on a circumference centered on the axial direction da of the shaft member 13, the direction in which the backrest support member 60 is located with respect to the swing axis of the seat support member 50 is consistent with the axial direction of the shaft member 13. The direction da is the same. In addition, by making each protrusion 62a provided on one of the rear connecting portion 54 and the lower connecting portion 62 enter a protrusion provided on the other side of the rear connecting portion 54 and the lower connecting portion 62 to receive The seat portion supporting member 50 and the backrest portion supporting member 60 are connected in a relatively swingable state, for example, in a state before the shaft member 13 passes through the portion 54a. In addition, unlike the illustrated example, a protrusion may be provided on the rear connecting portion 54 and a protrusion receiving portion may be provided on the lower connecting portion 62 .

In the example shown in FIG. 13 , a protrusion 62 a protruding inward in the width direction is formed on the lower connection portion 62 of the backrest support member 60 . The protrusion 62a forms a part of the through hole 60a through which the shaft member 13 passes. The protrusion 62 a protruding inward in the width direction forms a ring shape on a circumference centered on the axial direction da of the shaft member 13 . In addition, a protrusion receiving portion 54 a for receiving the protrusion 62 a is formed on the rear connection portion 54 of the seat portion supporting member 50 . The protrusion receiving portion 54a is formed by the inner peripheral surface of the through hole 50a formed in the rear connection portion 54 through which the shaft member 13 passes. Therefore, in the illustrated example, the through hole 50 a of the rear connecting portion 54 receives the shaft member 13 through the protrusion 62 a of the lower connecting portion 62 . In this manner, the length of the through hole 60 a formed in the backrest support member 60 in the axial direction da can be extended. Therefore, it is possible to suppress the backlash of the seat support unit 40 relative to the shaft member 13 , and to smoothly swing the seat support unit 40 relative to the main body frame 15 via the shaft member 13 .

Next, the seat portion supporting member 50 and the backrest portion supporting member 60 in the illustrated embodiment will be described in more detail. The seat portion support member 50 has: a seat portion support frame 51, which is U-shaped; frame end members 53, which are respectively installed on the end portion 51a of the seat portion support frame 51 forming a U-shape; a seat base portion 55, It is arranged tensioned on the seat part support frame 51 . In addition, the seat base portion 55 is only shown in FIG. 10 .

The seat part support frame 51 has a pair of side frame parts 52a and a connection frame part 52b connecting the pair of side frame parts 52a. The pair of side frame portions 52a have a symmetrical structure and extend substantially in the front-rear direction. The connecting frame portion 52b extends so as to connect the front end portions of the pair of side frame portions 52a. The seat portion support frame 51 may be an integral part (part) formed by bending a single material, for example, a metal pipe made of aluminum. The frame end member 53 is formed by using resin, for example, as a component (member) extending in a surface perpendicular to the width direction. In the illustrated embodiment, the frame end member 53 forms a rear connection portion 54 serving as a connection portion to the backrest supporting member 60 .

The seat base 55 supported by the seat support frame 51 in a tensioned state is a sheet member formed of, for example, a cloth material or a mesh material. The illustrated seat base portion 55 has: a main seat portion 56, at least a part of which is located in an area surrounded by a pair of side frame portions 52a and a connecting frame portion 52b of the seat portion support frame 51 in plan view; The portion 57 and the belt portion 58 are connected to the main seat portion 56 or installed on the main seat portion 56 . As shown in FIG. 10 , the cylindrical portion 57 is connected to the front end edge of the main seat portion 56 to form a through hole extending in the width direction. Moreover, the both ends of the belt part 58 are connected to the main seat part 56, and the support through-hole 55a is formed between this main seat part 56. As shown in FIG. The rear end edge of the main seat portion 56 is connected to a lower portion of a backrest supporting member 60 to be described below. The connecting frame portion 52b of the seat portion support frame 51 passes through the cylindrical portion 57, and the pair of side frame portions 52a pass through the support through holes 55a, so that the seat base portion 55 is mounted on the seat portion support frame 51, The tensioned state in both the front-rear direction and the width direction is maintained.

The back support member 60 has a flat plate-shaped main plate portion 61 . A pair of lower connection portions 62 serving as connection portions to the seat portion support member 50 extend downward from the main plate portion 61 . In addition, although detailed illustration is omitted here, holes for ventilation, vanes for adjusting the amount of ventilation, and the like may be formed in the main plate portion 61 .

As shown in FIGS. 2, 3 and 8 to 10, the seat support unit 40 has: an upper support member 41, which is connected to the backrest support member 60 and can rotate relative to the backrest support member 60; Part 45 is connected with the upper support part 41 and the main body frame 15 respectively. The side support members 45 are swingable relative to the upper support member 41 and the main body frame 15 . As shown in FIG. 10 , in the present embodiment, the upper support member 41 is connected to the backrest support member 60 through two lower connection portions 41 b arranged away from each other in the width direction. In addition, the side connection parts 41a on both sides of the upper support member 41 are connected to the rear upper connection part 45b of the side support member 45 on the corresponding side, and the side connection parts 41a can swing. In addition, the front lower connection portion 45 a of the side support member 45 is connected to the main body frame 15 . In the present embodiment, the front lower connection portion 45 a of the side support member 45 is hinged to the second link member 24 of the main body frame 15 , which will be described later.

However, the present invention is not limited to the illustrated example. As an example, the front lower connecting portion 45a of the side support member 45 may not be hinged with the second link member 24, but connected with other positions of the main body frame 15, the seat The back support member 50, the backrest support member 60, etc. are hinged.

As shown in FIGS. 2 to 8 and 9 , as the backrest support member 60 swings relative to the seat support member 50 , the side support member 45 swings centering on the front and bottom connecting portion 45 a. Therefore, no matter when the seat 150 is reclined or not, the side support member 45 is positioned at the side of the infant sitting on the seat 150 . Preferably, the side support member 45 functions as a link and swings the upper support member 41 relative to the backrest support member 60 in response to the swing of the backrest support member 60 relative to the seat support member 50 . As shown in FIGS. 3 and 5 , in the stroller 10 according to the present embodiment, the upper support member 41 stands up with respect to the backrest support member 60 in a state where the backrest support member 60 is laid down. Therefore, an infant lying on the seat support unit 40 can be protected from the side by the pair of side support members 45 , and an infant lying on the seat support unit 40 can be protected from the rear by the upper support member 41 . In addition, as shown in FIGS. 4 and 6 , the upper support member 41 extends substantially parallel to the backrest support member 60 in a state where the backrest support member 60 is erected. Therefore, an infant sitting on the seat support unit 40 can be protected from the side by the pair of side support members 45 , and the upper support member 41 functions as a headrest.

In addition, in this embodiment, as shown in FIG. 10 , connecting frame members 68 are provided between the respective frame end members 53 of the seat portion support member 50 . Furthermore, a tension member (not shown) may be extended between the seat base portion 55 and the connection frame member 68, and the seat base portion 55 is stably held in a tensioned state by the tension member. In addition, the use of the connection frame member 68 can prevent the members of the seat support unit 40 located on the outer side in the width direction from falling inward. The connection frame member 68 is formed of a metal pipe made of, for example, aluminum.

<main frame>

Next, the main body frame 15 supporting the seat support unit 40 described above will be described in detail.

As shown in Figures 3 to 7 and Figures 11 to 14, the main body frame 15 has: two left and right front legs 20 and two left and right rear legs 21; 20 is connected with the rear leg 21; the second link member 24 is connected with the first link member 22 on the corresponding side; the left and right front leg support members 32 are connected with the front leg 20 on the corresponding side Connected; the third link member 28, which is connected with the rear leg 21 on the corresponding side. The upper parts of the front legs 20 and the rear legs 21 are connected to the first link member 22 so as to be able to swing relative to the first link member 22 . The rear portion of the first link member 22 is connected to the second link member 24 so as to be relatively rotatable with respect to the second link member 24 . The first link member 22 functions as an armrest. The lower portion of the second link member 24 is connected to the third link member 28 so as to be relatively rotatable with respect to the third link member 28 .

In the present embodiment, the second link member 24 and the third link member 28 are connected by the shaft member 13 passing through the seat support unit 40 so as to be relatively rotatable. In addition, the second link member 24 and the third link member 28 and the seat support unit 40 can be relatively rotated using the shaft member 13 . Therefore, the second link member 24 of the main body frame 15, the third link member 28, the seat portion support member 50 of the seat support unit 40, and the backrest portion support member 60 can be formed with the shaft member 13 extending parallel to the width direction. The axis direction da rotates relatively.

In this embodiment, the second link member 24 has a second link main body 25 connectable to the first link member 22 at its upper portion, and a second link main body 25 attached to the lower end of the second link main body 25 . The second link end member 26 . The shaft member 13 passes through a lower part of the second link main body 25 covered by the second link end member 26 . Therefore, through-holes 25a and 26a through which the shaft member 13 passes and extends are respectively formed in the second link main body 25 and the second link end member 26 . In addition, the lower portion of the third link member 28 is connected to the rear leg 21 so as to be relatively rotatable with respect to the rear leg 21 . The third link member 28 has a third link body 29 connected to the rear leg 21 at its lower portion, and a third link end member 30 attached to the upper end of the third link body 29 . The shaft member 13 passes through an upper portion of the third link member 28 covered by the third link end member 30 . Therefore, through-holes 29 a and 30 a through which the shaft member 13 passes and extends are respectively formed in the third link body 29 and the third link end member 30 .

Further, the main body frame 15 connected to the seat support unit 40 via the shaft member 13 is provided with a second protrusion 30 b that is provided on a circumference centered on the axial direction da of the shaft member 13 and It protrudes in the direction of the axis da. The protrusion 30b has a convex surface (outer surface) 30b1 located on the entire circumference or a part of the circumference centered on the axial direction da. A second protrusion receiving portion 62b for receiving the protrusion surface 30b1 of the second protrusion 30b is formed on the seat support unit 40 . The protrusion receiving portion 62 b has a protrusion receiving surface 62 b 1 located on the entire circumference or a part of the circumference centered on the axial direction da of the shaft member 13 . When the main body frame 15 and the seat support unit 40 rotate relatively, the protrusion surface 30b1 of the second protrusion 30b and the protrusion receiving surface 62b1 of the second protrusion receiving portion 62b slide relatively. Thus, by engaging the second protrusion 30b with the second protrusion receiving portion 62b, the seat support unit 40 and the main body frame 15 can be centered on the axial direction da of the shaft member 13 without passing through the shaft member 13. relative rotation. Accordingly, the load applied to the shaft member 13 is distributed to the engaging position between the protrusion 30b and the protrusion receiving portion 62b, thereby improving the durability of the stroller. In addition, by entering each protrusion 30b into the protrusion receiving portion 62b, for example, at the time of assembly before the shaft member 13 is passed, the seat support unit 40 and the main body frame 15 can be positioned with high precision. In addition, unlike the illustrated example, protrusions may be provided on the seat support unit 40 and protrusion receiving portions may be provided on the main body frame 15 .

In the example shown in FIG. 13 , the shaft member 13 passes through the second link member 24 , the third link member 28 , and the seat support unit 40 sequentially from the outside in the width direction. Furthermore, a protrusion 30 b protruding inward in the width direction is formed on the third link end member 30 of the third link member 28 . The protrusion 30 b protruding inward in the width direction forms a ring shape on a circumference centered on the axial direction da of the shaft member 13 . On the lower connection portion 62 of the backrest support member 60 of the seat support unit 40, a protrusion receiving portion 62b that receives the protrusion 30b is formed. This protrusion receiving portion 62b is formed by the inner surface of a concave portion opened to the outside in the width direction.

In addition, the lower portion of the front leg support member 32 is connected to the front leg 20 , and the front leg support member 32 is relatively rotatable relative to the front leg 20 . In addition, the front leg support member 32 is fixedly connected to the seat support unit 40 at its upper portion. In the stroller 10 according to the present embodiment, the front leg support member 32 is fixedly connected to the seat portion support member 50 of the seat support unit 40 . More specifically, each of the front leg support members 32 is fixedly connected to the side frame portion 52 a on the corresponding side of the seat portion support frame 51 constituting the seat portion support member 50 . As shown in FIG. 10 , at the upper end portion of the front leg support member 32 is formed a support recess 32 a for receiving the seat support frame 51 of the seat support member 50 from above. With the seat portion support frame 51 disposed inside the support recess 32a, the seat portion support frame 51 and the front leg support member 32 are fixedly connected, for example, with pins or the like. Therefore, the seat portion support member 50 is supported from below by the front leg support member 32 .

The front leg support member 32 serves to support an elongated seat receiving member 33 . The seat receiving part 33 is slidable relative to the front leg supporting part 32 along its length direction. The seat receiving member 33 extends forward by sliding relative to the front leg support member 32 , so that the front portion of the seat 150 can be raised from below. For example, when the back support member 60 of the seat support unit 40 is laid down and the infant is lying on the seat 150, the front part of the seat 150 is lifted by the seat receiving member 33, thereby being able to support the infant. leg.

As shown in FIG. 1 , the main body frame 15 has: a pedal portion 17, which is a structural member extending in the width direction, extending between a pair of front legs 20; and a rear connection member 18, which is a structural member extending in the width direction. , extending between the pair of rear legs 21; the guard member 19, as a structural member extending in the width direction, extends between the pair of first link members 22.

<handle 70>

The U-shaped handle 70 is connected to the stroller main body 11 configured as above so as to be able to swing. Both ends of the U-shape of the handle 70 are connected to the third link member 28 on the corresponding side so as to be rotatable (swing) relative thereto. In the present embodiment, as shown in FIG. 13 , the handle 70 and the stroller main body 11 are connected by the shaft member 13 passing through the stroller main body 11 so as to be relatively rotatable. In particular, the use of the shaft member 13 enables the handle 70, the second link member 24 of the main body frame 15, the third link member 28, the seat portion support member 50 of the seat support unit 40, and the backrest portion support member 60 to communicate with each other. The axis direction da of the shaft member 13 extending in parallel in the width direction is relatively rotated about the center.

In this embodiment, the handle 70 has: a handle body 71, which is U-shaped; handle end parts 74, which are respectively provided at both ends of the U-shape of the handle body 71; and a first switching part 75, which approaches from the width direction A handle end piece 74 is provided. The handle main body 71 has a pair of handle main parts 72a attached to the handle end parts 74 at the lower ends of the handle main body 71, respectively, and a handle connection part 72b extending between the upper ends of the handle main parts 72a. The shaft member 13 passes through the lower portion of the handle main body 71 covered by the handle end member 74 and the first switching member 75 arranged side by side with the handle end member 74 in the width direction. Therefore, through-holes 71a, 74a, and 75a through which the shaft member 13 passes and extends are formed in the handle end member 74 and the first switching member 75, respectively.

In addition, the baby carriage main body 11 connected to the handle 70 through the shaft member 13 is provided with a third protrusion 26b, and the third protrusion 26b is provided on a circumference centered on the axial direction da of the shaft member 13 and extends toward the axial direction. da stand out. The third projection 26b has a convex surface (outer surface) located on the entire circumference or a part of the circumference centered on the axial direction da. The handle 70 is formed with a 3rd protrusion receiving part 75b which receives the protrusion surface 26b1 of the 3rd protrusion 26b. The third protrusion receiving portion 75b has a protrusion receiving surface located on the entire circumference or a part of the circumference centered on the axial direction da. When the handle 70 swings relative to the stroller body 11, the protrusion surface 26b1 of the third protrusion 26b and the protrusion receiving surface 76b1 of the third protrusion receiving portion 75b slide relative to each other. Thus, by engaging the third projection 26b with the third projection receiving portion 75b, the handle 70 can swing relative to the stroller body 11 centering on the axial direction da of the shaft member 13 without passing through the shaft member 13. . Accordingly, the load applied to the shaft member 13 is distributed to the engaging portion between the protrusion 26b and the protrusion receiving portion 75b, thereby improving the durability of the stroller. Moreover, by making each protrusion 26b enter into the protrusion receiving part 75b, the handle 70 and the stroller main body 11 can be positioned with high precision, for example, at the time of assembly before the shaft member 13 is passed. In addition, unlike the illustrated example, a protrusion may be provided on the handle 70 and a protrusion receiving portion may be provided on the stroller main body 11 .

In the example shown in FIGS. 13 to 15 , the shaft member 13 passes through the handle 70 , the second link member 24 , the third link member 28 , and the seat support unit 40 sequentially from the outside in the width direction. Furthermore, a protrusion 26 b protruding outward in the width direction is formed on the second link end member 26 of the second link member 24 . The protrusion 26b protruding outward in the width direction has a protrusion surface 26b1 located on a partial circumference centered on the axial direction da of the shaft member 13 . In addition, on the first switching member 75 of the handle 70, a protrusion receiving portion 75b that receives the protrusion surface 26b1 of the protrusion 26b is formed. The protrusion receiving portion 75b has a protrusion receiving surface 76b1 formed of an inner surface of a recess or an opening opened inward in the width direction. The protrusion receiving surface 76 b 1 of the illustrated protrusion receiving portion 75 b is located on a partial circumference centered on the axis direction da of the shaft member 13 . The length of the convex receiving surface 76b1 in the circumferential direction is greater than the length of the convex surface 26b1 in the circumferential direction. Therefore, when the handle 70 is swung relative to the stroller body 11, the protrusion 26b can move within the protrusion receiving portion 75b.

In addition, as shown in FIG. 14 and FIG. 15, the protrusion 26b has a convex surface 26b1, and also has a pair of end surfaces 26b2, 26b3, wherein the convex surface 26b1 is located on a part of the circumference centered on the axial direction da of the shaft member 13. Above, a pair of end surfaces 26b2, 26b3 are located on both sides of the raised surface 26b1 along the circumference and are not parallel to the raised surface 26b1. In the illustrated example, each end surface 26b2, 26b3 of the protrusion 26b is formed parallel to a radial direction (radial direction) centered on the axial direction da of the shaft member 13 . Likewise, the projection receiving portion 75b has a projection receiving surface 76b1, and also has a pair of end surfaces 76b2, 76b3, wherein the projection receiving surface 76b1 is located on a partial circumference centered on the axial direction da of the shaft member 13, and a pair of end surfaces 76b2, 76b3 are provided. The end surfaces 76b2, 76b3 are located on both sides of the convex receiving surface 76b1 along the circumference and are not parallel to the convex receiving surface 76b1. In the illustrated example, each end surface 76b2, 76b3 of the protrusion receiving part 75b is formed parallel to the radial direction centering on the axial direction da of the shaft member 13 . When the handle 70 is located at the first position (rear position), one end surface 26b2 of the projection 26b is disposed at a position facing the one end surface 76b2 of the projection receiving portion 75b, and the handle 70 located at the first position is restricted from moving further backward. swing. In addition, when the handle 70 is located at the second position (front position), the other end 26b3 of the projection 26b is disposed at a position facing the other end surface 76b3 of the projection receiving portion 75b, and the handle at the second position is restricted. The handle 70 is further swung forward.

The handle 70 has a swing restricting member 73 that is slidable relative to the handle 70 along the length direction of the handle main part 72 a of the handle main body 71 . The swing restricting member 73 can engage with the handle fixing pin 37 (see FIGS. 5 and 6 ) provided on the stroller main body 11 . The handle 70 can be locked at the second position (face-to-face pushing position) or the first position (back pushing position) by the engagement between the handle fixing pin 37 and the swing restricting member 73 .

<The overall movement and function of the stroller>

Next, the overall operation and effect of the stroller 10 by the stroller main body 11 and the handle 70 will be described. First, the stroller 10 configured as above can be folded from the unfolded state shown in FIGS. 1 to 6 to the folded state shown in FIG. 7 . When folded, the components constituting the stroller 10 rotate (rotate, swing) about an axis extending in the width direction relative to each other about an axis extending in the width direction.

Specifically, the third link member 28 is rotated clockwise as shown in FIG. 5 with respect to the rear leg 21 by pulling up the handle 70 located at the first position rearwardly and upwardly, and then pressing downwardly. Accompanying this operation, the first link member 22 and the seat portion support member 50 of the seat support unit 40 rotate clockwise as shown in FIG. 5 with respect to the second link member 24 . Due to this operation, the handle 70 and the front legs 20 are placed close to each other and arranged substantially flat when viewed from the side of the stroller 10 , and the position of the handle 70 is lowered. This enables the baby carriage 10 to be folded, reducing the size of the baby carriage 10 in the front-rear direction and the up-down direction. In addition, to unfold the stroller 10 from the folded state, it is only necessary to operate in the reverse order of the above-mentioned folding operation. Therefore, in this stroller 10, when folding the stroller 10 and unfolding the stroller 10, a part of the seat support unit 40 (specifically, from the end portion 51a of the seat portion support frame 51 to the front leg is supported). part of the fixed position of the member 32) and the front leg support member 32 function as a link.

In addition, the baby carriage 10 is provided with a state maintaining mechanism 35 that restricts the movement of the baby carriage 10 from the unfolded state to the folded state. The state maintaining mechanism 35 has an operation restricting member 35 c that is slidable relative to the second link member 24 in the longitudinal direction of the second link member 24 . The movement restricting member 35c is biased toward the third link end member 30 side of the third link member 28, and engages with the engagement recess 28a formed in the third link end member 30, thereby restricting the second link. The component 24 and the third link component 28 swing relative to each other, thereby restricting the movement of the stroller 10 from the unfolded state to the folded state. In addition, the state folding mechanism 35 further includes: an operation member 35b capable of engaging with the motion limiting member 35c; and a remote operation device 35a for remotely operating the operation member 35b. The operation member 35 b is slidable relative to the handle main part 72 of the handle 70 in the longitudinal direction of the handle main part 72 . Moreover, the remote operation device 35a is provided in the handle connection part 72b of the handle 70, and can remotely operate the slide of the operation member 35b with respect to the handle main part 72a. The operation restricting member 35c is operated by the operation member 35b using the remote operation device 35a, and the engaged state of the motion restricting member 35c and the third link end member 30 is released. That is, the baby carriage 10 in the unfolded state can be folded by operating the remote operation device 35a.

In the stroller 10 of the above-mentioned embodiment, the back support member 60 is provided with the protrusion 62a extending on the circumference centered on the axial direction da of the shaft member 13, and the seat support member The protrusion receiving part 54a that receives the protrusion 62a is formed on the 50, and the back support part 60 is connected with the seat part support part 50 through the engagement of the protrusion 62a and the protrusion receiving part 54a, and the back support part 60 is capable of swinging relative to the seat portion support member 50 around the rotation center of the seat support unit 40 relative to the main body frame 15 . That is, positioning by engagement of the protrusion 62a and the protrusion receiving portion 54a enables the backrest support member 60 and the seat support member 50 of the seat support unit 40 to be easily and accurately connected at predetermined relative positions. In addition, since the backrest supporting member 60 and the seat supporting member 50 can be kept connected in a predetermined positional relationship and relatively swingable by the engagement of the protrusion 62a and the protrusion receiving portion 54a, the shaft member 13 can be used to The seat support unit 40 is easily mounted on the main body frame 15 . In addition, it is possible to stabilize the swing of the backrest supporting member 60 with respect to the shaft member 13 . Therefore, the reclining operation and the folding operation can be performed more stably. Also, since the load applied to the shaft member 13 is distributed to the engagement portion between the protrusion 62a and the protrusion receiving portion 54a, the durability of the stroller 10 can be improved. In particular, when the shaft member 13 passes through more parts, the effect of such action becomes more pronounced. In addition, a projection may be provided on the seat portion supporting member 50 and a projection receiving portion may be provided on the backrest portion supporting member 60, and even in this example, the same effect can be obtained.

Also, when manufacturing the stroller 10 , part or all of the seat support unit 40 may be manufactured in advance, and then the manufactured seat support unit 40 may be mounted on the main body frame 15 . Compared with the method of manufacturing the baby carriage by sequentially installing various structural components, the baby carriage 10 can be produced easily, stably, and efficiently with this manufacturing method. However, the present invention does not limit the manufacturing method of the stroller 10 .

In addition, in the stroller 10 of the present embodiment, the main body frame 15 is provided with the second protrusion 30 b extending on the circumference centered on the axial direction da of the shaft member 13 , and the seat support unit 40 is formed with a The 2nd protrusion receiving part 62b which receives the 2nd protrusion 30b. Therefore, by positioning by engaging the protrusion 30b and the protrusion receiving portion 62b, the main body frame 15 and the seat support unit 40 can be easily and accurately connected at a predetermined relative position, and the shaft member 13 can be used to easily The seat support unit 40 is mounted on the main body frame 15 . In addition, since the relative rotation of the seat support unit 40 and the main body frame 15 is stable, the folding operation can be performed stably and smoothly. Also, since the load applied to the shaft member 13 is distributed to the engagement portion between the protrusion 30b and the protrusion receiving portion 62b, the durability of the stroller 10 can be improved. In addition, a protrusion may be provided on the seat support unit 40 and a protrusion receiving part may be provided on the main body frame 15, and the same effect can be obtained also in this example.

In addition, in the stroller 10 of the present embodiment, the stroller body 11 is provided with a third protrusion extending on a circumference centered on the axial direction da of the shaft member 13, and a third protrusion is formed on the handle 70 to receive the third projection. 3. 3rd bump receiver for bump 26b. Therefore, by positioning by engaging the protrusion 26b and the protrusion receiving portion 75b, the stroller main body 11 and the handle 70 can be easily and accurately connected at predetermined relative positions, and the handle can be easily connected by the shaft member 13. 70 is mounted on the stroller main body 11 . In addition, since the relative rotation between the handle 70 and the stroller main body 11 is stable, the folding operation can be performed stably and smoothly. Also, since the load applied to the shaft member 13 is distributed to the engagement portion between the protrusion 26b and the protrusion receiving portion 75b, the durability of the stroller 10 can be improved. In addition, a protrusion may be provided on the handle 70 and a protrusion receiving portion may be provided on the stroller body 11, and the same effect can be obtained in this example as well.

<Wheel holding unit 100>

Next, the wheel holding unit 100 will be described mainly with reference to FIGS. 22 to 27 . As described above, the wheel holding unit 100 installed on the front leg 20 and the rear leg 21 is constituted as a so-called caster, and the wheel holding unit 100 has: a rotating body 110, which holds the wheel 101 to rotate; The caster axis Ac serves as the center to support the rotation of the rotating body 110 . In addition, a switching mechanism 88 is provided on the stroller 10, and the switching mechanism 88 can automatically make the rotating body 110 of the wheel holding unit 100 between a state in which it can rotate relative to the fixed body 105 and a state in which it cannot rotate according to the position of the handle 70. switch between. The switching mechanism 88 will be described later, and the wheel holding unit 100 will be described in detail here.

Wheel holding units 100 having the same structure or bilaterally symmetrical structures are attached to the pair of front legs 20 . In addition, wheel holding units 100 having the same structure or bilaterally symmetrical structures are attached to the pair of rear legs 21 . Also, the wheel holding unit 100 installed on the front leg 20 and the rear leg 21 has the same structure except that the part of the structure on which it is installed on the leg is different. Therefore, here, an example of the wheel holding unit 100 configured as a caster will be described.

As shown in FIGS. 22 and 23 , the wheel holding unit 100 has a rotating body 110 that holds the wheel 101 to rotate, and a fixed body 105 that supports the rotating body 110 so as to be rotatable. The fixed body 105 is fixedly connected with the corresponding front leg 20 or rear leg 21 . The direction of the rotation axis Ar of the wheel 101 is consistent with the axis direction of the axle 113 and extends in the horizontal direction. In this embodiment, the fixed body 105 supports the support shaft member 108 , and the rotating body 110 is supported by the support shaft member 108 suspended from the fixed body 105 , and can rotate relative to the fixed body 105 around the axis direction of the support shaft member 108 .

As shown in Figures 22 and 23, the rotating body 110 has a wheel holder 120, a support block 115, a first elastic structure 125, and a second elastic structure 127, wherein the wheel holder 120 supports the wheel 101 to rotate, The support block 115 supports the wheel holder 120 for operation, and the first elastic structure 125 and the second elastic structure 127 are arranged between the support block 115 and the wheel holder 120 . The wheel holder 120 is used to hold the axle 113 , and the wheels 101 are held on both sides of the axle 113 . In addition, the wheels are omitted in FIG. 23 , and one wheel is omitted in FIG. 22 . In this embodiment, the wheel holder 120 is attached to the support block 115 via the swing shaft member 111 , and can swing sc2 relative to the support block 115 centering on the axis direction of the swing shaft member 111 . In addition, in the example shown in FIGS. 22 and 23 , the rotating body 110 further includes a brake member 129 mounted on the wheel holder 120 so as to be able to swing relative to the wheel holder 120 . The stopper member 129 has a stopper protrusion 129a protruding in a direction parallel to the rotation axis Ar. The brake member 129 swings relative to the wheel holder 120 so that the brake protrusion 129 a engages with the wheel 101 , and in this state, the rotation of the wheel 101 around the rotation axis Ar is restricted.

The first elastic structure 125 and the second elastic structure 127 are deformed by the movement of the wheel holder 120 relative to the support block 115 . In other words, the first elastic structure 125 and the second elastic structure 127 receive the movement of the wheel holder 120 relative to the support block 115 by deforming, and perform a cushioning function. Here, the elastic structure refers to a structure that at least partially restores its original shape when it receives an external force and removes the external force. Therefore, not only a general elastic material block such as rubber or resin is included in the elastic structure , and objects structurally having the above properties, such as springs or gas-tight bags, are also contained in elastic structures. In the wheel holding unit 100 including the two elastic structures 125 , 127 , from the viewpoint of having a good cushioning function, it is preferable to satisfy at least one of the following condition a and condition b. By changing the material, structure, arrangement, and deformability of the first elastic structure 125 and the second elastic structure 127 to configure both, the following conditions a and b can be realized.

Condition a: When the movement of the wheel holder 20 relative to the support block 115 starts, first, only the first elastic structure 125 is deformed by applying pressure between the wheel holder 120 and the support block 115, and when the wheel holder 120 When the movement relative to the support block 115 continues, not only the first elastic structure 125 is deformed by applying pressure between the wheel holder 120 and the support block 115, but also the second elastic structure 127 is formed between the wheel holder 120 and the support block 115. Pressure is applied between the support blocks 115 to deform.

Condition b: Assuming that only the first elastic structure 125 is arranged between the wheel holder 120 and the support block 115, the wheel holder 120 moves relative to the support block 115 by deforming the first elastic structure 125. When measuring, the size of the force required is different from the size of the force required in the following case: assuming that only the second elastic structure 127 is disposed between the wheel holder 120 and the support block 115, by making the second elastic structure 127 is deformed to move the wheel holder 120 relative to the support block 115 by a predetermined amount.

Under the condition a, when the wheel cage 120 and the supporting block 115 move relatively, at the initial stage of the relative movement, only the first elastic structure 125 deforms, and the first elastic structure 125 resists the wheel cage 120 and the supporting block 125. Relative action of block 115 . In addition, when the relative movement of the wheel holder 120 and the support block 115 continues, the second elastic structure 127 starts to deform, and the relative movement of the wheel holder 120 and the support block 115 is resisted by the second elastic structure 127 . For example, at the initial stage of the relative movement of the wheel holder 120 and the support block 115, the second elastic structure 127 may not be in contact with at least one of the wheel holder 120 and the support block 115, when the wheel holder 120 and the support block When the relative movement of 115 continues, the second elastic structure 127 can be in contact with both the wheel holder 120 and the support block 115 . When the second elastic structure 127 overcomes the relative movement of the wheel holder 120 and the support block 115, the first elastic structure 125 can also continue to deform along with the movement of the wheel holder 120 and the support block 115, and the second elastic structure 127 Together with the first elastic structure 125 , the relative movement between the wheel holder 120 and the support block 115 is resisted, or the first elastic structure 125 does not resist the relative movement between the wheel holder 120 and the support block 115 .

Under the condition b, when the wheel holder 120 and the support block 115 move relative to each other by a predetermined amount, the first elastic structure 125 produces a resistance against the relative movement. When the relative movement is performed, the second elastic structure 127 generates a resistance against the relative movement, and these two resistances are set to be different resistances.

Next, the structure of the elastic structures 125 and 127 of the illustrated embodiment and the structure of the rotating body 110 related to the support of the elastic structures 125 and 127 will be described. In the present embodiment, the first elastic structure 125 is composed of the elastic body 126 itself such as rubber. The illustrated elastic body 126 has a receiving portion 126a formed as a recess. The wheel holder 120 has a support protrusion 121a fitted into a receiving portion 126a. The first elastic structure 125 made of the elastic body 126 is held by the wheel holder 120 by the engagement of the support protrusion 121 a and the receiving portion 126 a. The elastic body 126 has a substantially cylindrical shape, and the direction extending between the wheel holder 120 and the support block 115 is defined as its longitudinal direction. When the wheel holder 120 swings relative to the support block 115, the elastic body 126 is compressed along its length direction. Therefore, the resistance force of the first elastic structure 125 against the relative swing of the wheel holder 120 and the support block 115 is not limited by the relative swing of the wheel holder 120 and the support block 115 , and is substantially constant.

Next, the structure of the second elastic structure 127 and the rotating body 110 supporting the second elastic structure 127 will be described. As shown in FIGS. 22 and 23 , the support block 115 of the rotating body 110 has a plate-shaped support plate portion 116 extending in the vertical direction. In addition, the wheel holder 120 of the rotating body 110 has: a holder base 121 hinged to the support block 115 ; and an upper extension 122 extending upward from the rear of the holder base 121 . As shown in FIG. 23 , the upper extension portion 122 faces the support plate portion 116 of the support block 115 . In addition, the axle shaft 113 for holding the wheel 101 is held near the connection portion of the holder base 121 and the upper extension 122 in the wheel holder 120 . In addition, the brake member 129 is hinged to the upper extension 122 .

In this embodiment, the second elastic structure 127 is formed as a gas-tight bag. The material constituting the bag is made of stretchable rubber or resin. In the illustrated example, the second elastic structure 127 is formed as a gas-tight resin bag 128 and the resin bag 128 is transparent or translucent. The resin bag 128 is supported by the support plate part 116 of the support block 115 by the fastener which is not shown in figure. As shown in FIG. 24 , the resin bag 128 is substantially in the shape of a cube, on which a concave portion 128 a , a stepped portion 128 b , and a fastener receiving portion 128 c are formed.

The concave portion 128 a is formed on a surface on the side facing the upper extending portion 122 of the wheel holder 120 . The concave portion 128a extends linearly in a direction perpendicular to the swing axis sc2 on which the wheel holder 120 swings relative to the support block 115 . Moreover, the convex part 123 which faces the concave part 128a is formed in the upper extension part 122. As shown in FIG. The convex portion 123 extends linearly in a direction perpendicular to the swing axis sc2 on which the wheel holder 120 swings relative to the support block 115 , and contacts the concave portion 128 a when the wheel holder 120 moves relative to the support block 115 .

The stepped portion 128b is provided below the surface on the side facing the support plate portion 116 . The stepped portion 128b extends linearly in a direction parallel to the swing axis sc2. , In addition, a convex portion 117 is formed on the support plate portion 116, and the convex portion 117 faces the stepped portion 128b. In addition, a space for incorporating a fastener (not shown) for fixing the resin bag 128 to the support plate portion 116 is formed in the fastener receiving portion 128c. A step for receiving the head of a fastener composed of a screw or the like is formed in a space inside the fastener receiving portion 128c.

Next, the action and effect of the wheel holding unit 100 of the present embodiment constituted as described above will be described.

First, in the wheel holding unit 100 of this embodiment, a first elastic structure 125 and a second elastic structure 127 are provided between the relatively movable support block 115 and the wheel holder 120, and the first elastic structure 125 and the second elastic structure 127 are deformed by the relative movement of the wheel holder 120 and the support block 115 . Preferably, the first elastic structure 125 and the second elastic structure 127 satisfy the above-mentioned condition a, that is, when the relative movement between the wheel holder 120 and the support block 115 starts, at first, only the first elastic structure 125 is placed on the wheel holder. 120 and the support block 115 are deformed by applying pressure. When the relative movement between the wheel holder 120 and the support block 115 continues, in addition to the first elastic structure 125, the second elastic structure 127 is also in the wheel holder. 120 and the supporting block 115 are deformed by applying pressure. In such a stroller 10, when the load applied to the stroller 10 is small, for example, when the baby on the stroller is young and no objects are placed in the storage basket 90, the first elastic The structure body 125 effectively receives vibrations and impacts generated during running, and exhibits a good buffering function. In addition, when the load applied to the stroller 10 is relatively large, for example, when the baby sitting on the stroller 10 is older and an object is placed in the storage basket 90, the elastic structure different from the first elastic structure 125 can be used. The second elastic structure 127 or the first elastic structure 125 and the second elastic structure 127 stably support the load, effectively absorb vibration and impact generated during running, and exhibit a good cushioning function. That is, it is possible to impart good riding comfort to the baby carriage 10 regardless of the size of the load on the baby carriage 10 .

In addition, it is preferable that the first elastic structure 125 and the second elastic structure 127 satisfy the above-mentioned condition b, that is, assuming that only the first elastic structure 125 is arranged between the wheel holder 120 and the support block 115, by making the first elastic structure 125 When the elastic structure 125 is deformed to move the wheel holder 120 relative to the support block 115 by a predetermined amount, the magnitude of the force required is different from the magnitude of the force required in the following case: Assuming that there is a gap between the wheel holder 120 and the support block 115 Only the second elastic structure 127 is arranged between 115 , and by deforming the second elastic structure 127 , the wheel holder 120 moves relative to the support block 115 by the same amount. That is, it is preferable that the resistance of the first elastic structure 125 against the relative movement of the wheel holder 120 and the support block 115 is different from the resistance of the second elastic structure 127 against the relative movement of the wheel holder 120 and the support block 115 . In such a stroller 10, the first elastic structure 125 and the second elastic structure are appropriately designed by changing the material, structure, arrangement, and deformable amount of the first elastic structure 125 and the second elastic structure 127. 127, so that the desired cushioning function can be given to the wheel holding unit 100 with a degree of freedom in design.

In addition, the first elastic structure 125 and the second elastic structure 127 may simultaneously satisfy the above-mentioned condition a and condition b. As an example, when the resistance of the first elastic structure 125 against the relative movement of the wheel holder 120 and the support block 115 is smaller than the resistance of the second elastic structure 127 against the relative movement of the wheel holder 120 and the support block 115 When the baby carriage 10 is loaded with a small load, the load can be stably supported by the first elastic structure 125, and vibrations and shocks generated during travel can be effectively received. In addition, when the load of the stroller 10 is large, the first elastic structure 125 or the first elastic structure 125 and the second elastic structure 127 can stably support the load, and effectively receive the load generated during travel. vibration and shock. Therefore, the influence of the load size of the baby carriage 10 can be eliminated very effectively, and good riding comfort can be given to the baby carriage 10 .

In addition, in the above-described embodiment, the second elastic structure 127 is configured as the gas-tight bag 128 . Such a second elastic structure 127 can optimize the resistance of the second elastic structure 127 by adjusting the shape of the bag 128 or the filling amount of gas, and in particular, the resistance can be appropriately changed as the adjustment is made. The desired damping function can thus be imparted to the wheel holding unit with a high degree of design freedom.

In addition, in the above-described embodiment, the concave portion 128a extending linearly is formed in the bag 128 constituting the second elastic structure 127 . And, one of the wheel holder 120 and the support block 115 supports the bag 128. At this time, the recess 128a extends perpendicularly with respect to the swing axis sc2 of the wheel holder 120 and the support block 115, and the other of the wheel holder 120 and the support block 115 One has a protrusion 123 which is located in a recess 128a when the wheel holder 120 and the support block 115 move relative to each other. Since the second elastic structure 127 is a gas-tight bag 128, it can be deformed in various directions, and the other one of the wheel holder 120 and the support block 115 can be deformed by engaging the concave portion 128a and the convex portion 123. The second elastic structure 127 maintains a predetermined positional relationship, and also deforms the bag 128 in a predetermined manner. The desired suspension effect can thereby be ensured. In addition, before the relative movement of the wheel holder 120 and the support block 115 starts, even if the other of the wheel holder 120 and the support block 115 does not contact the deformable second elastic structure 127 and is not directly connected Through the engagement of the concave portion 128a and the convex portion 123, the other one of the wheel holder 120 and the support block 115 and the second elastic structure 127 that can be realized can be maintained at a predetermined position, and the desired position can be stably ensured. Suspension effect.

In addition, in the above-mentioned embodiment, by engaging the stepped portion 128b and the convex portion 117, it is possible to restrict the deviation of the bag 128 on the support plate portion 116 of the support block 115, and it is possible to prevent the resin bag 128 from moving in an unexpected direction. deformed. Thereby, the second elastic structure 127 constituted by the bag 128 can exert a desired suspension effect. In addition, in the above-described embodiment, the fastener receiving portion 128c having a step (flange) portion is formed on the bag 128 constituting the second elastic structure 127 . The fastener receiving portion 128c creates a direction in which the bag 128 is not easily deformed, so that the deformation of the bag 128 is kept substantially constant when the wheel holder 120 and the support block 115 move relative to each other, and a desired cushioning function is produced.

In addition, when the second elastic structure 127 is constituted as a gas-tight bag 128, when the wheel holder 120 moves relative to the support block 115, one of the wheel holder 120 and the support block 115 is formed in the bag 128. The upper corners come into contact with the bag 128. With regard to the second elastic structure 127 consisting of a gas-tight bag 128, the corners of the bag 128 exhibit good resistance to deformation, and in addition, the second elastic structure 127 sensitively receives the wheel cage after the corners start to deform 120 flexibly deforms in response to the movement of the support block 115 . Therefore, the expected load of the stroller 10 can be stably supported by the second elastic structure 127, and the second elastic structure 127 supporting the load can effectively receive shocks and vibrations and perform a cushioning function.

In addition, the elastic structures 125, 127 are not limited to the case of the airtight bag 128, and the resistance of the elastic structures 125, 127 to the relative motion of the wheel holder 120 and the support block 115 can be controlled by the elastic structures 125, 127. After deformation starts, it does not remain constant, but changes. In such an example, by appropriately setting the resistance of the elastic structures 125, 127 to the relative movement of the wheel holder 120 and the support block 115, it is possible to give the baby a sense of stability without being limited by the load of the stroller 10. Car 10 has good ride comfort.

In addition, when at least one of the elastic structures 125 and 127 is exposed, it can visually remind people of a cushioning function, thereby reassuring the caregiver of the infant. In particular, the second elastic structure 127 made of a gas-tight bag 128 can strongly remind people of the cushioning function, and especially, when the bag 128 is transparent or translucent, it can remind people more strongly of Buffer function.

In addition, in this embodiment, the wheel holding unit 100 is configured as a caster, and the rotating body 110 is rotatable relative to the fixed body 105, but the present invention is not limited thereto. For the wheel holding unit that the rotating body 110 can rotate relative to the fixed body 105, that is, for the wheel holding unit that the wheel 101 cannot rotate, not only the first switching member 75 and the second switching member 80 can be applied, but also the first switching member 80 can be obtained. The above-mentioned effects brought by the component 75 and the second switching component 80. In addition, in this embodiment, the example in which the wheel holding unit 100 has both the 1st switching member 75 and the 2nd switching member 80 was shown, However, this invention is not limited to this. The wheel holding unit 100 may have only the second switching member 80 , and in this example, the above-mentioned function and effect brought about by only the second switching member 80 can be obtained.

<Switch Mechanism>

Next, the switching mechanism 88 will be described.

<Overall structure of switching mechanism>

As described above, the switching mechanism 88 automatically switches the rotatable body 110 of the wheel holding unit 100 between the rotatable state and the non-rotatable state with respect to the fixed body 105 according to the position of the handle 70 . Especially in this embodiment, the wheel holding unit 100 configured as a caster is provided on the front leg 20 and the rear leg 21, and the switching mechanism 88 can make the wheel mounted on the front side in the traveling direction according to the position of the handle 70. The rotating body 110 of the wheel holding unit 100 on the leg rotates about the caster axis Ac with respect to the fixed body 105, and the rotating body of the wheel holding unit 100 mounted on the leg on the rear side in the direction of travel can be restricted. 110 rotates about the caster axis Ac with respect to the fixed body 105 . More specifically, in a state where the handle 70 is located at the first position (rear push position) shown in FIGS. The body 110 rotates relative to the fixed body 105 , and can limit the rotation of the rotating body 110 of the wheel holding unit 100 mounted on the rear leg 21 relative to the fixed body 105 . In addition, when the handle 70 is located at the second position (face-to-face push position) shown in FIGS. The rotating body 110 of the wheel holding unit 100 mounted on the rear leg 21 can rotate relative to the fixed body 105 .

The switching mechanism 88 has: the first switching member 75, which is arranged on the handle 70 and can move with the swing of the handle 70; the second switching member 80, which is supported on the rear leg 21 and can follow the first switching member 75 The locking member 130 is provided on the wheel holding unit 100 ; the transmission mechanism 87 transmits the action of the second switching member 80 to the locking member 130 .

However, as described above, the first switching member 75 constitutes a part of the handle 70 . Therefore, when the handle 70 swings between the first position shown in FIG. 1, FIG. 3, and FIG. 5 and the second position shown in FIG. 2, FIG. The axis acts as the center, that is, makes a rotational movement or a circular movement. In addition, in the present embodiment, the swing axis da of the handle 70 coincides with the axis direction da of the shaft member 13 that supports the swing of the handle 70 . In addition, in the present embodiment, as shown in FIGS. 11 to 14 , since the first switching member 75 is also passed through the shaft member 13, the first switching member 75 follows the swing of the handle 70 and follows the swing of the handle 70. The axis da is the center of rotation. The second switching member 80 is arranged at a position above the first switching member 75 of the rear leg 21 . The second switching member 80 can slide on the rear leg 21 .

The first switching member 75 has a cam abutment surface 76 that abuts against the second switching member 80 when the first switching member 75 is operated in accordance with the swing of the handle 70 . In addition, the second switching member 80 has a cam contact piece 81 for receiving the cam contact surface 76 . In this embodiment, the second switching member 80 is urged downward along the rear leg 21 not only by gravity, but also by an urging member 85 built in, for example, the rear leg 21 through an intermediary member 83 described later. Inside the leg 21 (refer to FIG. 19 ). The contact state of the cam contact piece 81 of the second switching member 80 and the cam contact surface 76 of the first switching member 75 can be maintained by the urging force from the urging member 85 . Moreover, in this embodiment, as the handle 70 swings, the position of the cam contact surface 76 in contact with the cam contact piece 81 changes, so that the second switching member 80 overcomes the urging force of the urging member 85 behind. Slide on leg 21.

As shown in FIGS. 17 to 19 , in this embodiment, as the handle 70 swings from the first position to the second position, when the stroller 10 is viewed from the side, the cam contact surface 76 abuts against the cam contact piece 81 . The connected part is away from the swing axis da. Therefore, when the handle 70 swings from the first position to the second position, the second switching member 80 slides upward on the rear leg 21 . Conversely, when the handle 70 swings from the second position to the first position, the second switching member 80 slides up and down the rear leg 21 .

In addition, in order to reduce the volume of the first switching member 75, the cam contact surface 76 of the first switching member 75 and the cam contact piece of the second switching member 80 are improved. The cam contact surface 76 of the first switching member 75 and the cam contact piece of the second switching member 80 will be described in detail later.

A locking member 130 that operates as the second switching member 80 slides is provided on the wheel holding unit 100 . As described above, the wheel holding unit 100 has: the rotating body 100, which supports the rotation of the wheel 101; 110 turns. Also, as shown in FIGS. 25 and 26, the locking member 130 can move between the locked position shown in FIG. 26 and the unlocked position shown in FIG. 25. When the locking member 130 is in the locked position, it can limit the relative When the fixed body 105 rotates, the locking member 130 can rotate the rotating body 110 relative to the fixed body 105 when the locking member 130 is located at the unlocked position. Therefore, the switching mechanism 88 of the present embodiment can move the lock member 130 from the unlocked position to the locked position or from the locked position to the locked position according to the swing of the handle 70 relative to the stroller body 11 .

In addition, the lock member 130 has been improved in order to operate the lock member 130 stably. In addition, the structure of the locking member 130 and the wheel holding unit 100 holding the locking member 130 will be described in detail later.

Next, the transmission mechanism 87 will be described. The transmission mechanism 87 is arranged between the second switching part 80 and the wheel holding unit 100, and is used to transmit the sliding action of the second switching part 80 to the locking part 130 of the wheel holding unit 100, so that the locking part 130 is in the locked position and locked. Released to move between positions. In the present embodiment, a relay member 83 is provided inside the rear leg 21 . Furthermore, the intermediary member 83 is connected to the second switching member 80 , and the intermediary member 83 moves up and down inside the rear leg 21 in synchronization with the sliding operation of the second switching member 80 relative to the rear leg 21 . The transmission mechanism 87 has: a wire 87b having one end attached to the relay member 83 and the other end attached to the lock member 130; and a cylindrical member 87a through which the wire 87b passes and extends inside. As shown in FIG. 19, one end of the cylindrical member 87a is held by the holding portion 84. As shown in FIGS. The holding portion 107 is provided in the vicinity of the locking member 130 of the wheel holding unit 100 in the vicinity of the inner relay member 83 . Therefore, when the second switching member 80 slides relative to the rear leg 21, the wire 87b moves in the cylindrical member 87a, and the lock member 130 connected to the wire 87b moves along with the movement of the wire 87b.

In addition, in this embodiment, as described above, the wheel holding unit 100 functioning as a caster is attached to both the front leg 20 and the rear leg 21 . Therefore, as shown in Figure 5, a transmission mechanism 87 is provided between the relay member 83 and the wheel holding unit 100 for the front leg, and another transmission mechanism 87 is provided between the relay member 83 and the wheel holding unit 100 for the rear leg. A transmission mechanism 87. In addition, as described above, the stroller 10 of the present embodiment is substantially bilaterally symmetrical about a plane extending in the front-rear direction passing through the center in the width direction. Therefore, the first switching member 75, the second switching member 80, and the relay member 83, the transmission mechanism 87 for the front leg, the wheel holding unit 100 for the front leg, the transmission mechanism 87 for the rear leg, and the rear leg that constitute the switching mechanism 88 are configured. Wheel holding units 100 for legs are also provided on the left and right.

<Cam contact surface of the first switching member and cam contact piece of the second switching member>

Here, the cam abutment surface 76 of the first switching member 75 and the cam contact piece 81 of the second switching member 80 will be described in more detail mainly with reference to FIGS. 16 to 21 .

As described above, as the handle 70 swings, the position of the cam contact surface 76 in contact with the cam contact piece 81 changes, and the biased member 85 pushes the second switching member toward the first switching member 75 side. 80 slides on the rear legs 21 . As shown in FIGS. 17 to 19 , in this embodiment, as the handle 70 swings from the first position to the second position, when the stroller 10 is viewed from the side, the cam contact surface 76 abuts against the cam contact piece 81 . The connected part is away from the swing axis da. Therefore, when the handle 70 swings from the first position to the second position, the second switching member 80 slides upward on the rear leg 21 . Conversely, when the handle 70 swings from the second position to the first position, the second switching member 80 slides downward on the rear leg 21 .

In addition, in the present embodiment, the position of the cam contact piece 81 in contact with the cam contact surface 76 also changes as the handle 70 swings. As shown in FIGS. 17 to 21 , when the handle 70 swings in a certain direction relative to the stroller body 11 , the position where the cam contact piece 81 contacts the cam abutment surface 76 is upstream of the movement path of the cam abutment surface 76 . Change from one side to the downstream side. That is, the position of the cam contact piece 81 in contact with the cam contact surface 76 moves in the same constant direction as the cam contact surface 76 , and the cam contact surface 76 at this time moves together with the handle 70 . According to such an embodiment, in the state where the handle 70 is located at the first position as shown in FIG. During the swinging process of the second position, the cam abutment surface 76 is in contact with a part of the cam contact piece 81 of the second switching member 80 at a position where a part faces, and the handle 70 is at the second position as shown in FIG. 21 . position, the cam abutment surface 76 is arranged so that it is located only at the position where the cam abutment surface 76 contacts the cam contact piece 81 of the second switching member 80 during the swing process of the handle 70 from the first position to the second position. Part of the facing position.

That is, when the position in contact with the cam abutment surface 76 in the cam contact piece 81 does not change, for example, the first switching member 75 may also have a part shown by the double-dashed line in FIG. The cam contact surface 76 of the switching member 75 is made longer. Therefore, according to the present embodiment, the volume and weight of the first switching member 75 of the switching mechanism 88 which is easy to form a complicated structure can be reduced, and the volume and weight of the stroller 10 can be reduced. In particular, structures related to the folding operation of the stroller 10 or the reclining operation of the seat support unit 40 and the seat 150 are arranged near the swing axis da of the handle 70 , and there is little room left. Actually, as shown in FIG. 12 , the operation member 35 b of the state maintaining mechanism 35 is provided directly behind the first switching member 75 . In the illustrated example, the extended portion indicated by the dashed-two dotted line in FIG. 21 cannot be provided because an operation that interferes with the operation member 35b occurs. That is, the structure of the cam abutment surface 76 and the cam contact piece 81 in this embodiment can not only reduce the volume and weight of the stroller 10 , but also increase the degree of freedom in the overall design of the stroller 10 .

As a specific example of such a structure, the cam contact piece 81 of the second switching member 80 is composed of the same surface as the cam contact surface 76, more specifically, a curved surface, a flat surface, a folded surface, or the like. Also, as shown in the illustrated example, the cam contact piece 81 of the second switching member 80 may have at least two cam contact protrusions 82a, 82b protruding toward the cam contact surface 76 side of the first switching member 75 . The cam contact protrusions 82a, 82b are arranged at positions separated from each other along the movement path of the cam contact surface 76 formed as the handle 70 swings. 82b can be changed according to the swing position of the handle 70 . The design and manufacture of the cam contact piece 81 with the cam contact protrusions 82a, 82b requires high precision only for the positions of the cam contact protrusions 82a, 82b, but not for the entire cam contact piece 81. Therefore, the cam contact piece 81 can be easily produced.

In addition, in the illustrated example, the cam contact protrusions 82a, 82b are formed by a single cam contact piece 81 extending linearly, however, the cam contact protrusions 82a, 82b may be provided separately.

In addition, it is preferable that when the handle 70 is located somewhere between the first position and the second position, the cam contact surface 76 is simultaneously in contact with the two cam contact protrusions 82a, 82b arranged adjacently along the moving path. As described above, in the present embodiment, the second switching member 80 is biased toward the first switching member 75 by the biasing member 85 . In addition, the cam contact protrusions 82a and 82b of the cam contact piece 81 that come into contact with the cam contact surface 76 change as the cam contact surface 76 that operates together with the handle 70 moves in a certain direction. Therefore, by setting the timing when the cam abutment surface 76 is in contact with the two adjacent cam contact protrusions 82a, 82b at the same time, when the cam contact protrusions 82a, 82b that are in contact with the cam abutment surface 76 change, by The urging member 85 can prevent the first switching member 75 and the second switching member 80 from colliding. In addition, no matter when the handle 70 is swinging in one direction or in another direction within the swingable range, that is, whether the handle 70 is swinging from the first position to the second position or from the second position to the first position, There is no impact caused by the cam contact protrusions 82a, 82b colliding with the cam abutment surface 76, or the cam contact protrusions 82a, 82b contacting the ends 76a, 76b of the cam abutment surface 76 and passing over the ends. The impact caused by the parts 76a, 76b can ensure smooth swinging of the handle 70 .

In particular, in the illustrated embodiment, the cam contact piece 81 of the second switching member 80 is composed of two cam contact protrusions 82a, 82b, and when the handle 70 moves from the first position to the second position, the cam contacts The protrusion 82 a is located on the upstream side on the moving path of the cam abutment surface 76 , and the cam contact protrusion 82 b is located on the downstream side on the moving path of the cam abutting surface 76 . And, in the state where the handle 70 shown in FIG. 17 is located at the first position, the cam abutment surface 76 is only in contact with the first cam contact protrusion 82a of the first cam contact protrusion 82a and the second cam contact protrusion 82b. face and touch it. In addition, in the state where the handle 70 shown in FIG. 21 is located at the second position, the cam contact surface 76 is only in contact with the second cam contact protrusion 82b of the first cam contact protrusion 82a and the second cam contact protrusion 82b. face and touch it. According to this embodiment, since the contact position between the cam contact piece 81 and the cam contact surface 76 changes as the cam contact surface 76 moves, the length of the cam contact surface 76 can be shortened. That is, it is possible to reduce the volume and weight of the first switching member 75 of the switching mechanism 88 which tends to form a complicated structure, thereby reducing the volume and weight of the stroller 10 . Furthermore, as described above, the configurations of the cam contact surface 76 and the cam contact piece 81 in this embodiment can improve the degree of freedom in design of the stroller 10 as a whole.

Also, according to this embodiment, when the handle 17 is located between the first position shown in FIG. 17 and the second position shown in FIG. 21 , that is, when it is located at the first intermediate position shown in FIG. 18 , the cam abuts against the handle 17. The surface 76 faces both the first cam contact protrusion 82a and the cam contact protrusion 82b, and is in contact with only the first cam contact protrusion 82a. In addition, when the handle 17 is located between the first intermediate position shown in FIG. 18 and the second position shown in FIG. 21, that is, when it is located at the second intermediate position shown in FIG. Both the cam contact protrusion 82a and the cam contact protrusion 82b face each other and are in contact with only the second cam contact protrusion 82b. According to this embodiment as described above, it is possible to set the timing at which the cam contact surface 76 contacts the two adjacent cam contact protrusions 82a, 82b at the same time. According to this embodiment, as described above, when the cam contact protrusions 82a, 82b that are in contact with the cam contact surface 76 change, the cam contact protrusions 82a, 82b do not contact the cam contact surface 76. The handle 70 can be swung smoothly due to the impact caused by the collision, or the impact caused by the cam contact protrusions 82a, 82b coming into contact with the ends 76a, 76b of the cam abutment surface 76 and passing over the ends 76a, 76b.

In addition, in order to exert the functions of the cam abutment surface 76 and the cam contact piece 81 as described above, in this embodiment, when viewed along the swing axis da on which the handle 70 swings relative to the stroller main body 11, the handle 70 is positioned relative to the baby carriage. The linear distance La from the swing axis da of the vehicle main body 11 to each position on the cam abutment surface 76 gradually becomes longer from one end 76a on the cam abutment surface 76 to the other end 76b on the cam abutment surface 76. At this time, the cam One end 76a on the contact surface 76 is on the front side in the moving direction when the handle 70 swings from the first position to the second position, and the other end 76b is on the moving direction when the handle 70 swings from the first position to the second position. Moreover, when the handle 70 swings to the second position shown in FIG. 21 , the straight-line distance Lb from the swing axis da of the handle 70 relative to the stroller body 11 to the second cam contact protrusion 82b is smaller than that from the handle 70 to the second position shown in FIG. 21 . 70 to the first cam contact protrusion 82a with respect to the swing axis da which swings with respect to the stroller main body 11 .

Also, in the present embodiment, when viewed along the swing axis da on which the handle 70 swings relative to the stroller body 11 , each position on the cam abutment surface 76 from the swing axis da on which the handle 70 swings relative to the stroller body 11 The linear distance La of the cam abutment surface 76 gradually becomes longer from one end 76a on the cam abutment surface 76 to the other end 76b on the cam abutment surface 76. The front side in the moving direction when one side swings to the other side, and the other end 76b is the rear side in the moving direction when the handle 70 swings from one side to the other side within the swingable range, and, as shown in Figure 16 As shown, the width w of the cam abutment surface 76 formed in a direction parallel to the swing axis da of the handle 70 extends from one end 76a on the cam abutment surface 76 to the cam abutment surface 76 on the rear side in the moving direction. The other end 76b becomes larger gradually. According to this embodiment like this, when the linear distance La from the swing axis da of the handle 70 to a certain position on the cam contact surface 76 becomes longer in side view, the width w of the cam contact surface 76 at that position becomes longer. big. When the linear distance La from the swing axis da of the handle 70 to a certain position on the cam abutment surface 76 becomes longer, when the position of the cam abutment surface 76 abuts against the cam contact piece 81, the biasing member 85 acts on the cam contact piece 81 toward the cam contact surface 76 side to become larger. In addition, since the width w of the cam abutment surface 76 becomes larger at a position where the linear distance La drawn from the swing axis da of the handle 70 becomes longer, the wider portion of the cam abutment surface 76 can receive the input from the applicator. Greater force of force member 85. That is, it is possible to reduce the volume and weight of the first switching member 75 and the stroller 10 without increasing the size of the cam contact surface 76 more than necessary. In addition, the first switching member 75 and the second switching member 85 can be relatively moved smoothly along with the swing of the handle 70 .

<Locking part and wheel holding unit>

Next, parts related to the lock member 130 in the shaft member 130 and the wheel holding unit 100 will be described mainly with reference to FIGS. 25 to 27 .

As mentioned above, the locking member 130 can move between the locked position shown in FIG. 26 and the unlocked position shown in FIG. When the lock member 130 is in the unlocked position, the rotating body 110 can be rotated relative to the fixed body 105 . As shown in Fig. 25 and Fig. 26, an accommodating portion 106 is formed on the fixed body 105, and the accommodating portion 106 extends in one direction. Side opening. In the present embodiment, the housing portion 106 extends in the vertical direction and opens downward in the vertical direction. In addition, an engaging concave portion 114 is formed on the supporting block 115 of the rotating body 110 , and the engaging concave portion 114 faces the accommodating portion 106 of the fixed body in one direction.

The locking member 130 is disposed in the housing portion 106 such that its longitudinal direction coincides with one direction, and is slidable in the housing portion 106 . The position where the locking member 130 moves to the other side in one direction in the receiving portion 106 is the unlocking position shown in FIG. Section 106. Therefore, when the lock member 130 is located at the lock release position, the lock member 130 does not restrict the rotation of the rotating body 110 relative to the fixed body 105 . In addition, the position where the locking member 130 moves to one side in one direction in the housing portion 106 is the locking position shown in FIG. stretch out. At this time, one end portion of the locking member 130 extends into the engagement recess 114 of the rotating body 110 . Therefore, when the locking member 130 is located at the locking position, the locking member 130 restricts the rotation of the rotating body 110 relative to the fixed body 105 .

As shown in FIGS. 25 and 26 , a compression spring 103 is arranged at a position on one side of the locking member 130 in the housing portion 106 of the fixed body 105 . The compression spring 103 is compressed between one end surface of the housing portion 106 and the locking member 130 , thereby biasing the locking member 130 from the other side in one direction to one side. As mentioned above, the locking member 130 is connected to the wire 87b of the transmission mechanism 87 . Then, the wire 87b moves as the handle 70 swings, and the locking member 130 is pulled up against the biasing force of the compression spring 103, thereby moving the locking member 130 from the locked position to the unlocked position. In addition, the wire 87b moves as the handle 70 swings, and the locking member 130 is pushed by the urging force of the compression spring 103, thereby moving the locking member 130 from the unlocked position to the locked position.

The locking member 130 in the present embodiment has a spring receiving surface 131a that receives one end of the compression spring 103 in one direction, and the locking member 130 has a spring-side extension 135 that is opposite to the spring. The receiving surface 131 a extends to the other side in one direction and is located on the side of the compression spring 103 . As shown in FIG. 25 , when the lock member 130 slides to the other side in one direction in the storage portion 106 and is in the lock release position, the length of the spring side extension 135 is slightly longer than that between the spring receiving surface 131a and the storage portion 106. The length of the compression spring 103 that is compressed between the end faces of one side is short. By utilizing the area where the compression spring 103 is arranged, the entire length of the lock member 130 can be increased without increasing the length of the storage portion 106 in one direction. That is, the length of the locking member 130 can be increased without increasing the volume and weight of the wheel holding unit 100 . And, by increasing the length of the locking member 130, even if a gap for ensuring the reliable sliding of the locking member 130 is provided between the locking member 130 and the receiving portion 106, it is possible to effectively suppress the occurrence of the locking member 130 in the receiving portion 106. Shake, so that the locking member 130 slides smoothly. Accordingly, it is possible to more reliably switch between a state in which the rotating body 110 can rotate relative to the fixed body 105 and a state in which the rotating body 110 cannot rotate relative to the fixed body 105 .

In addition, in this embodiment, as shown in FIG. 27 , the spring side extension portion 135 has a pair of side wall portions 136 and a connecting wall portion 137 connecting the pair of side wall portions 136 . A portion of one side in at least one direction of the compression spring 103 is surrounded by the spring side extension 135 from three directions. Therefore, the compression spring 103 is compressed and expanded guided by the spring-side extension 135 as the locking member 130 slides within the housing portion 106 . Accordingly, the locking member 130 can further stably slide in the housing portion 106 . For example, for example, when the locking member 130 moves from the locking position to the unlocking position, the compression spring 103 is subjected to a compression force, but at this time, it can effectively prevent the compression spring 103 from being bent under the action of the compression force to move in one direction. Prominent in the vertical direction. Accordingly, the locking member 130 can further stably slide in the housing portion 106 .

Also, in this embodiment, as shown in FIGS. 25 to 27 , the locking member 130 has: a base portion 131 on which a spring receiving surface 131 a is formed and connected to the spring side extension portion 135 ; the wheel side extension portion 141 , which is connected to the base 131 and extends to one side in one direction relative to the base 131 . Also, the end portion of the wire 87 b of the transmission mechanism 87 is attached to the base portion 131 . In addition, the wheel-side extension portion 141 has a pair of side wall portions 142 and a connection wall portion 143 connecting the pair of side wall portions 142 . By securing the entire length of the lock member 130 as described above, the lock member 130 can be smoothly slid in the housing portion 106 and the weight of the lock member 130 can be reduced.

Furthermore, according to the present embodiment, as shown in FIGS. 25 to 27 , one end portion of the wheel-side extension portion 141 in one direction has a tapered tip tapered portion 141 a. With such a locking member 130 , one end portion can extend from the receiving portion 106 of the fixed body 105 and smoothly enter the engagement recess 114 of the rotating body 110 . That is, the lock member 130 can be smoothly slid from the unlocked position to the locked position.

In addition, according to the present embodiment, as shown in FIGS. 25 to 27 , the front end tapered portion 141a is disposed on the wheel-side extension portion 141 of the lock member 130 , and the end of the engagement recess 114 on one side in one direction The portion has a tapered bottom cone 114a. With such a wheel holding unit 100, not only can the lock member 130 be smoothly slid from the unlocked position to the locked position, but also the gap between the lock member 130 and the engaging recess 114 can be reduced when the lock member 130 is located at the locked position. . Therefore, it is possible to smoothly switch from a state in which the rotating body 110 can rotate relative to the fixed body 105 to a state in which the rotating body 110 is restricted from rotating relative to the fixed body 105, and then, it is possible to effectively prevent the rotating body 110 from shaking relative to the fixed body 105. . Thereby, the stroller 10 can be moved stably.

Also, according to this embodiment, as shown in FIGS. 25 to 27 , the compression spring 103 is a helical compression spring, and the wire 87b having one end installed on the base 131 of the locking member 130 on which the spring receiving surface 131a is formed passes through. Pass through the helical compression spring 103 and extend within the helical compression spring 103 . In such a wheel holding unit 100 , as the lock member 130 slides in the housing portion 106 , the compression and expansion of the coiled compression spring 103 are guided by the wire 87 b and the spring-side extension portion 135 . Therefore, it is possible to further stably slide the lock member 130 in the storage portion.

In addition, in the present embodiment, the example in which the locking member 130 is automatically operated with the movement of the handle 70 through the transmission mechanism is shown, but the present invention is not limited thereto. The locking member 130 and the wheels related to the locking member 130 The structure of the holding unit 100 can be applied to a manually operated wheel holding unit, and in such an example, the effects of the lock member 130 described above and the structure of the wheel holding unit 100 related to the lock member 130 can be obtained.

<seat 150>

Next, the seat 150 supported by the seat support unit 40 will be described mainly with reference to FIGS. 1 , 2 , and 28 to 30 . As shown in FIG. 28 , the seat 150 as a whole is substantially symmetrical about a center plane in the width direction extending in the front-rear direction.

As shown in Fig. 1, Fig. 2 and Fig. 28～Fig. 30, seat 150 has: seat part 156; Backrest part 157, it is connected with seat part 156, is positioned at the rear of seat part 156; 160, which extends from the seat portion 156 to both sides; the left and right upper side portions 167, which extend from the backrest portion 157. The seat portion 156 mainly supports the buttocks of an infant sitting on the stroller 10 . In addition, the backrest part 157 is arrange|positioned at the position facing the back of an infant. The side part (first side part) 160 and the upper side part (second side part) 167 constitute a side wall part positioned on the side of the infant. In addition, the seat 150 further has an upper portion 169 connected to an upper position where the back portion 157 is separated from the seat portion 156 . As shown in FIG. 4 , the upper portion 169 connects the left and right upper side portions 167 and functions as a headrest.

As described above, the seat portion 156 is mainly supported by the seat portion support member 50 of the seat support unit 40 . As shown in FIG. 28 , the rear edge portion of the seat portion 156 is connected to the back portion 157 , and a pair of side edge portions of the seat portion 156 are respectively connected to the corresponding side surface portions 160 . The backrest 157 is mainly supported by the backrest support member 60 . As shown in FIG. 28 , the backrest portion 157 has a substantially chamfered shape when viewed from above, so that one short side of the rectangular shape is curved. The backrest part 157 is arranged so that the edge part forming the above-mentioned curved shape is spaced apart from the seat part 156 and located behind or above.

The lower edge portion of the backrest portion 157 is connected to the rear edge portion of the seat portion 156 . The backrest part 157 and the seat part 156 are connected, for example, by sewing. In a reclining action or a folding action, the seat portion 156 and the back portion 157 of the seat 150 approach each other. At this time, the seat portion 156 and the backrest portion 157 can relatively swing around the linear connection portion formed by stitches as a swing axis.

A pair of linear side edge portions of the backrest portion 157 are connected to the respective upper side portions 167 . In addition, the curved upper edge portion of the backrest portion 157 is connected to an upper portion 169 functioning as a headrest. The pair of upper side portions 167 are supported by the side support member 45 of the seat support unit 40 , and the upper portion 169 is supported by the upper support member 41 of the seat support unit 40 . In the example shown in FIG. 28, a pair of upper side surface part 167 and the upper part 169 are integrally comprised from the same material. In this example, a pair of upper side portions 167 and an upper portion 169 are connected to the backrest portion 157 by sewing, for example. In this case, the pair of upper side parts 167, the connecting part of the upper part 169, and the backrest part 157 are formed by a substantially U-shaped sewing thread. As described above, the upper support member 41 can swing relative to the backrest support member 60 . As the upper support member 41 swings with respect to the backrest support member 60 , the upper portion 169 swings with respect to the backrest 157 around the linear connection portion made of stitches as a swing axis.

In addition, as shown in FIGS. 1 and 2 , the side support member 45 is not restricted by the reclining movement, and maintains a state of standing upright with respect to the surface formed by the backrest support member 60 . Therefore, the upper side surface portion 167 supported by the side support member 45 is not restricted by the reclining movement, and stands upright on the side of the infant leaning against the backrest portion 157 . The upper side portion 167 has a larger width at an upper position on the side of the infant's head. In addition, the upper side portion 167 has a smaller width at the lower position close to the seat portion 156, as shown in FIGS.

The seat part 156 , the backrest part 157 , the upper side part 167 and the upper part 169 can be in direct contact with an infant riding on the stroller 10 . Therefore, the seat portion 156, the back portion 157, the upper side portion 167, and the upper portion 169 are formed by using an elastic cloth material, for example, a cloth material formed by sandwiching elastic sponge or the like between two cloth materials. Alternatively, the cloth material may be made of elastic cloth. In addition, the cloth material used for the seat part 156, the back part 157, the upper side part 167, and the upper part 169 may contain reinforcement board etc. and may be reinforced. In addition, in consideration of cleaning of the seat 150 , it is preferable that the seat 150 can be fixed to and detachable from the stroller main body 11 . The seat 150 is fixed to the stroller main body 11 by using well-known fasteners such as buttons attached to various positions of the seat 150 .

Next, the left and right side surfaces 160 will be described in detail. As shown in Fig. 28～Fig. 30, each side part 160 has: side body part 161, and it is connected with seat part 156; It faces and is connected to at least one of the side body part 161 and the backrest part 157 and the upper side part 167 . In consideration of the appearance, each side portion 160 is not restricted by the reclining state, that is, as shown in FIGS. The edge portion of the rear side of 161 extends to the position facing the back side of the upper side portion 167, in other words, the side connecting portion 165 is positioned at the inner side of the upper side portion 167 and/or the backrest portion 157, and does not face the infant. I expose it to one side. In addition, here, the side opposite to the surface facing the infant riding on the stroller 10 is referred to as the "inside".

In the illustrated example, the side connection part 165 of the left side part 160 is connected to the left side edge part of the backrest part 157, and the side connection part 165 of the right side part 160 is connected to the right side of the backrest part 157. side edges are connected. In addition, in the illustrated example, the side connection portion 165 of the left side portion 160 is connected to the connection portion between the backrest portion 157 and the left upper side portion 167 from the back side, and the side surface of the right side portion 160 The connection part 165 is connected to the connection part of the backrest part 157 and the right upper side part 167 from the back side. The side connecting portion 165 of each side portion 160 can be overlapped and sewed together with the side edge portion on the corresponding side and the upper side portion 167 on the corresponding side of the backrest 157 . In addition, in the illustrated example, the side body portion 161 of the left side portion 160 is connected to the left side edge portion of the seat portion 156 , and is connected to the left side portion on the lower portion of the backrest portion 157 . The side edges are connected. Likewise, the side main body portion 161 of the right side portion 160 is connected to the right side edge portion of the seat portion 156 , and is also connected to the right side edge portion of the lower portion of the backrest portion 157 . The side body portion 161 of each side portion 160 can be overlapped and sewn together with the corresponding side edge portion of the seat portion 156 and the corresponding side edge portion of the backrest portion 157 .

In the illustrated example, the side body portion 161 and the side connection portion 165 of each side portion 160 are continuously connected to the seat portion 165 and the back portion 157 . In particular, in the illustrated example, the position of the lower end of the connecting portion between each upper side portion 167 and the backrest portion 157 coincides with the boundary position between the side main body portion 161 and the side connecting portion 165 in the connecting edge of the side portion 160 and the backrest portion 157. .

In addition, from the viewpoint of more effectively preventing the side portion 160 from falling inward in the width direction or expanding in the width direction due to deformation to the outside in the width direction, it is preferable that the side connection portion 165 of the side portion 160 is larger than the side body portion of the side portion 160. 161 is easy to deform. As an example, it is preferable to use a material that is more easily deformed than the side body portion 161 of the side portion 160 for the side connection portion 165 of the side portion 160 . Specifically, like the above-mentioned seat portion 156, backrest portion 157, upper side portion 167, and upper portion 169, the side main body portion 161 may be formed of an elastic material, and the side connection portion 165 may be formed only of cloth. .

The side main body portion 161 is held in a state of standing up from the seat portion 165 , and faces an infant riding on the stroller 10 from the side. From this point of view, it is preferable to use an elastic material for the side main body portion 161 that comes into contact with infants. For example, it is preferable to use a self-supporting cloth material such as a cloth material formed by sandwiching an elastic sponge or the like between two pieces of cloth for the side main body portion 161 .

In addition, as shown in FIGS. 28 to 30 , a first fold line 162 a and a second fold line 162 b are formed on the side body portion 161 of each side portion 160 . As shown in FIGS. 28 to 30 , the folding lines 162a, 162b extend approximately along a radial path centered on the side end of the connecting portion of the seat portion 156 and the backrest portion 157, and the connecting portion of the seat portion 156 and the backrest portion 157 It is consistent with the swing axes of the seat portion 156 and the backrest portion 157 . The side body part 161 is divided into a first part 161a connected to the seat part 156, a third part 161c connected to the side connection part 165, and a first part 161a and a third part arranged by two folding lines 162a and 162b. Part 2 161b between 161c.

The fold lines 162a and 162b are linearly extending regions that are more easily deformed than other parts of the side body part 161 . In the illustrated example, the fold lines 162a and 162b are formed as stitches formed on an elastic cloth material. In addition, as other shapes than sutures, through-holes arranged in a line may be used, or the creases 162a and 162b may be formed of thermally compressed lines.

As shown in FIGS. 28 to 30 , reinforcement members 163 a , 163 b , and 163 c are respectively provided on the back side of each side surface portion 160 . The reinforcing members 163a, 163b, and 163c are plate-shaped members formed of a material that is more easily deformed than the side body portion 161, for example, resin such as polypropylene. 1 to 3 parts 161a, 161b, 161c.

In addition, as shown in FIG. 28 , the seat 150 further has a cover portion 170 extending from the upper side 167 and the outer edge portion of the upper portion 169 separated from the backrest portion 157 . As shown in FIGS. 1 and 2 , the cover portion 170 is used to cover a part of the inner surface of the backrest portion 157 , the upper side portion 167 , and the upper portion 169 . In addition, a part of the side main body portion 161 and the side connection portion 165 of the side portion 160 arranged to face the back surface of the upper side portion 167 is covered with the covering portion 170 . In addition, illustration of the covering part 170 is omitted in FIGS. 29 and 30 .

As shown in FIG. 28 , on the side portion 160 of the seat 150 is provided a connecting member 153 which is connected to the seat support unit 40 and can be detached from the seat support unit 40 . The connector 153 is provided on the third portion 161c of the side main body portion 161 . Especially in the illustrated example, the connecting member 153 is mounted on the inside of the third part 161c, and is arranged near the side away from the seat part 156 and the backrest part 157, that is, at the edge of the third part 161c ( near the upper edge) and also near the side connecting portion 165. In addition, a link 46 that can be engaged with the link 153 is provided on a member that swings relative to the main body frame 15 in the seat support unit 40 during the reclining operation. The seat 150 and the seat support unit 40 are connected by connecting pieces 153 , 46 . A pair of connecting parts 153, 46 is composed of buttons, hooks and buckles, Velcro and the like.

As shown in FIGS. 8 , 9 , 10 and 11 , in the illustrated example, the connector 46 is attached to the side support member 45 of the seat support unit 40 . When the stroller 10 is viewed from the side, the side support member 45 is provided with a portion where the connecting member 46 deviates from the swing axis sc1 of the side support member 45 and the main body frame 15, that is, deviates from the front lower connection portion 45a, and is arranged in the swing position. near axis sc1. In addition, as shown in FIGS. 8 and 9 , when the baby carriage 10 is viewed from the side, in a state where the side support member 45 swings upward relative to the main body frame 15 , the portion where the connector 46 is provided in the side support member 45 Located above the swing axis sc1 of the side support member 45 and the main body frame 15, in the state where the side support member 45 swings rearward relative to the main body frame 15, the portion of the side support member 45 where the connecting piece 46 is provided is located The side support member 45 and the rear of the swing axis sc1 of the main body frame 15 . In addition, when the baby carriage 10 is viewed from the side, in the state where the side support member 45 is swinging upward relative to the main body frame 15, the side support member 45 is supported sideways relative to the state where the side support member 45 is swinging backward relative to the main body frame 15. The portion of the component 45 where the connecting piece 46 is provided is located at the front and at the top.

Next, the functions and effects of the seat 150 of the present embodiment constituted by the above configuration will be described.

First, according to the present embodiment, the side portion 160 of the seat 150 and the seat support unit 40 are connected and detachable by the connecting members 46 , 153 . Therefore, as shown in FIGS. 1 and 2 or FIGS. 29 and 30 , it is possible to effectively suppress the side portion 160 from falling inward in the width direction or expanding outward in the width direction accompanying the reclining movement of the stroller body 11 . That is, according to the present embodiment, it is possible to effectively prevent the side portion 160 from falling away from the stroller body 11 due to falling inward. Therefore, it is possible to effectively prevent clothes and the like from being caught between the seat 150 and the stroller main body 11 . In addition, when an infant is seated on the stroller 10 , the side portion 160 that falls inward prevents the infant from sitting on the seat portion 156 . Therefore, by preventing the side part 160 from falling inward, it becomes possible to ride an infant on the stroller 10 stably and easily. Also, preventing the side portion 160 from falling inward is beneficial to improve the appearance of the stroller. In addition, by effectively preventing the side portion 160 from expanding outward in the width direction, it is possible to effectively avoid interference between the side portion 160 and the stroller body 11 when folding and unfolding the stroller body 11 . Thereby, the folding operation and unfolding operation of the stroller main body 11 can be performed stably.

In addition, at the same time, the connecting member 46 is provided on a member that swings relative to the main body frame 15 in the seat support unit 40 during the reclining operation, specifically, on the side support member 45 . Therefore, the portion of the side portion 160 of the seat 150 connected to the side connection member 45 by the connection members 46 , 153 and at least a portion in the vicinity thereof can move in accordance with the reclining motion of the seat support unit 40 of the stroller 10 . Therefore, by appropriately setting the attachment positions of the link members 46 and 153, it is possible to always arrange the side surface portion 160 at an appropriate position with respect to the backrest portion 157 which moves with the reclining operation. Accordingly, it is possible to sufficiently suppress the side surface of the seat from falling inward in the width direction or expanding outward in the width direction, and it is possible to arrange the side surface of the seat at an appropriate position with respect to the backrest.

In addition, in the above-mentioned embodiment, when the stroller 10 is viewed from the side, the portion of the side support member 45 where the connecting member 46 is provided deviates from the swing axis sc1 of the side support member 45 and the main body frame 15, that is, deviates from the front lower side. The connecting portion 45a is arranged near the swing axis sc1. Therefore, it is possible to arrange the side portion 160 at an appropriate position with respect to the backrest portion 157, and it is also possible to more stably prevent the situation where the portion of the side portion 160 where the connector 153 is attached is damaged as the backrest portion 157 leans. There is a large movement, the part of the side part 160 other than the part where the connecting part 153 is provided, for example, the part of the side part 160 between the part connected to the seat part 156 and the part where the connecting part 153 is provided, in more detail That is, the second portion 161b of the side main body portion 161 falls to the inside or outside in the width direction.

In addition, in this embodiment, as shown in FIGS. 8 and 9 , when the baby carriage 10 is viewed from the side, in the state where the side support members 45 swing upward relative to the main body frame 15 , the side support members 45 The position where the connecting member 46 is provided is located above the swing axis sc1 of the side support member 45 and the main body frame 15, and in the state where the side support member 45 swings backward relative to the main body frame 15, the side support member 45 is provided with The portion where the link 46 is located is located behind the side support member 45 and the swing axis sc1 of the main body frame 15 . In addition, when the baby carriage 10 is viewed from the side, in the state where the side support member 45 is swinging upward relative to the main body frame 15, the side support member 45 is supported sideways relative to the state where the side support member 45 is swinging backward relative to the main body frame 15. The portion of the component 45 where the connecting piece 46 is provided is located at the front and at the top. Therefore, in a state where the backrest portion 157 stands up with respect to the seat portion 156 and the infant sits on the seat 150 , the side portion 160 relatively moves forward and is pulled upward. Accordingly, an infant riding on the stroller 10 can be appropriately protected from the side by the side portion 160 . In addition, in a state where the backrest portion 157 falls toward the seat portion 156 and the infant lies on the seat 150, the side surface portion 160 relatively moves backward. Accordingly, an infant lying in the stroller 10 can be appropriately protected from the side by the side portion 160 and the upper side portion 167 .

Also, according to the present embodiment, the portion to be the side wall of the seat 150 mounted on the stroller main body 11 is divided into the side portion 160 extending from the seat portion 156 side and the side portion 160 extending from the backrest portion 157 side. The upper side part 167 of. Therefore, as shown in FIGS. 1 and 2 or FIGS. 29 and 30 , when the backrest 157 stands up from the tilted state as the stroller body 11 reclines, the side 160 and the upper side 167 can move relatively. . Therefore, it is possible to effectively suppress, for example, that the side surface portion 160 falls inward in the width direction or expands outward in the width direction due to deformation in the width direction.

In addition, the side portion 160 is connected to the backrest portion 157 through a side connection portion 165 that faces the upper side portion 167 from the back side. Therefore, it is easy to handle the seat 150 .

In addition, according to the present embodiment, the side connection portion 165 is made of a material that is more easily deformed than the material of the side body portion 161 . When adopting such a seat 150, when the inclination angle of the back portion 157 of the seat 150 relative to the seat portion 156 changes with the reclining action or folding action of the stroller main body 11, the back portion 157 and the seat portion are connected. The side portion 160 of the seat portion 156 is easily deformed at the side connection portion 165 on the inner side of the upper side portion 167 , and deformation is suppressed at the side body portion 161 . Therefore, when the seat portion 156 and the backrest portion 157 are approached to move the upper side portion 167 and the side portion 160 relative to each other, it is possible to more effectively prevent the side body portion 161 of the side portion 160 from falling inward in the width direction or expanding outward in the width direction. .

Furthermore, according to the above-described embodiment, the side portion 160 is connected to the seat portion 156 and the back portion 157 through the connection portion extending linearly through the lateral end of the connection portion between the seat portion 156 and the back portion 157 . Therefore, it is possible to prevent holes or gaps from being formed in the seat 150 near the waist of the baby sitting on the stroller 10 , so that the stroller 10 has good safety.

Also, according to the above-mentioned embodiment, the connecting portion between the side connecting portion 165 and the backrest portion 157, and the boundaries between the side connecting portion 156 and the side main body portion 161 are substantially along a radial line centered on the swing axis of the seat portion 156 and the backrest portion 157. Trajectory extension. Therefore, when the inclination angle of the backrest part 157 of the seat 150 relative to the seat part 156 changes with the reclining or folding movement of the stroller main body 11, the side part 160 connecting the backrest part 157 and the seat part 156 The side connection portion 165 on the back side of the upper side portion 167 is easily deformed. Therefore, it is possible to more effectively prevent the side body portion 161 of the side portion 160 from falling inward in the width direction or spreading outward in the width direction.

Furthermore, according to the present embodiment, the first fold line 162 a and the second fold line 162 b are formed on the side body portion 161 of the side portion 160 . And these folding lines 162a, 162b extend radially about the swing axis|shaft axis|shaft of the seat part 256 and the back part 257 substantially. For example, when the backrest portion 157 and the seat portion 156 are very close to each other when the stroller 10 is folded, the side portion 160 is not only deformed at the side connecting portion 165, but also bent at the first fold line 162a and the second fold line 162b. , the first part 161a, the second part 161b, and the third part 161c overlap each other, so that the side body part 161 is folded. Therefore, when the stroller 10 is folded, it is possible to effectively prevent the side portion 160 from falling inward in the width direction and spreading outward in the width direction.

Moreover, according to this embodiment, the reinforcement members 163a, 163b, and 163c are provided on the first to third portions 161a, 161b, and 161c of the side body portion 161, respectively. The reinforcing members 163a, 163b, 163c can effectively prevent the side part 160 from falling inward in the width direction and expanding outward in the width direction when the backrest 157 leans or when the stroller 10 is folded. In particular, the reinforcing member 163c provided on the third portion 161c is arranged near the connector 153 . Therefore, even if the side portion 160 moves with the movement of the side support member 45, the side portion 160 can be effectively prevented from falling to the width by the reinforcing member 163c near the connecting piece 46, 153 connecting the side support member 45 and the side portion 160. Inward in the direction and outward in the width direction.

<Basket 90>

Next, the storage basket 90 will be described mainly with reference to FIGS. 5 , 7 , 31 and 32 . The storage basket 90 is attached to the stroller main body 11 and supported under the seat support unit 40 . As shown in FIG. 5 , the storage basket 90 has a bottom surface 91 , a front surface 93 , a rear surface 92 and a pair of side surfaces 94 extending between the front surface 93 and the rear surface 92 . Wherein, the bottom surface 91 includes a bottom plate 96 . In addition, the rear surface 92 includes a rear portion of the bottom plate 96 and, in the illustrated example, a rear plate 97 connected to the rear edge. The bottom panel 96 and the rear panel 97 may be covered by a cloth material to be contained within the bottom surface 91 and the rear surface 92, respectively. The rear plate 97 is capable of swinging about an axis db extending in the width direction relative to the bottom plate 96 . As shown in FIG. 5 , the front surface 93 or the front portion of the side surface 94 and the middle portion of the side surface 94 are connected to the stroller body 11 . Accordingly, the rear portion of the storage basket 90 is exposed and opened to the rear of the seat support unit 40 .

31 and 32 show the bottom plate 96 and the rear plate 97 . In the specific example shown in FIG. 31, the rear portion of the upper surface of the bottom plate 96 (the surface that becomes the inner side of the storage basket 90) and the connecting material 98 are connected by a seam 98a along the width direction, and the front portion of the rear plate 97 is The lower part of the surface (the surface serving as the inner side of the storage basket 90 ) and the connection material 98 are connected by a seam 98 a along the width direction. The bottom plate 96 and the rear plate 97 are formed of, for example, a certain rigid material that can stand independently, and the connection material 98 is formed of, for example, a soft material such as cloth. Thus, the bottom plate 96 and the rear plate 97 are connected and can swing relative to each other.

In addition, an urging member 99 is attached to the bottom plate 96 and the rear plate 97 , and the urging member 99 extends between the bottom plate 96 and the rear plate 97 . The urging member 99 urges the rear surface 92 of the storage basket 90 to fall backward from the bottom surface 91 . In the specific example shown in FIG. 32 . The urging member 99 is an elastic material made of rubber, for example, and one end is attached to the bottom plate 96 and the other end is attached to the rear plate 97 in a stretched state to generate an urging force.

As described above, in the storage basket 90 of the present embodiment, the rear surface 92 of the storage basket 90 is biased by the biasing member 99 so as to fall backward from the bottom surface 91 . Therefore, since the rear surface 92 of the storage basket 90 is spread out to the rear, articles can be easily put in or taken out. In addition, since it is easy to visually confirm the inside of the storage basket 90 , it is possible to effectively prevent forgetting to take out articles from the storage basket 90 . In addition, since forgetting to take out the article can be effectively prevented, it is possible to effectively prevent the folding operation of the stroller 10 from being hindered by forgetting to take out the article.

In addition, as shown in FIG. 5 , the upper edge of the side surface 94 is formed as a side reinforcement edge 94 a to maintain a tensioned state between the front surface 93 and the rear surface 92 . Since the side surface 94 of the storage basket 90 is tensioned and does not fall inward, it is easy to put in or take out articles. In addition, since it is easy to visually confirm the inside of the storage basket 90 , it is possible to effectively prevent forgetting to take out articles from the storage basket 90 . In addition, since forgetting to take out the article can be effectively prevented, it is possible to effectively prevent the folding operation of the stroller 10 from being hindered by forgetting to take out the article.

In addition, in this embodiment, the stroller main body 11 is foldable. And, as shown in FIG. 7 , when the folded baby carriage main body 11 is viewed from the side, the rear surface 92 of the storage basket 90 can be inclined under the action of the force from the biasing member 99, so that the baby carriage main body 11 The upper edge when unfolded is located below the lower edge of the stroller body 11 when unfolded. When the stroller 10 is folded in this way, the articles stored in the storage basket 90 will automatically come out from the storage basket 90 due to the inclination of the rear surface 92 . This can effectively prevent forgetting to take out the items from the storage basket 90 , and further effectively prevent the folding action of the stroller 10 from being hindered due to forgetting to take out the items.

Also, in this embodiment, as shown in FIG. 7 , when viewing the folded stroller main body 11 from the side, the bottom surface 91 of the storage basket 90 can be inclined so that the rear of the stroller main body 11 when unfolded The lip is located below the front edge of the stroller body 11 when unfolded. When the stroller 10 is folded in this way, the articles stored in the storage basket 90 will automatically come out from the storage basket 90 due to the inclination of the bottom surface 91 . This can effectively prevent forgetting to take out the items from the storage basket 90 , and further effectively prevent the folding action of the stroller 10 from being hindered due to forgetting to take out the items.

Claims (9)

1. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can be relative to baby's vehicle main body in the 1st position and the 2nd position Between swing,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part phase by the cam bearing surface Acted for the back leg,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

The position contacted in the cam bearing surface with the cam contact piece changes with the swing of the handle,

When the handle is configured at some position between the 1st position and the 2nd position, the cam bearing surface with The cam contact piece the whole region contacted with the cam bearing surface is facing.

2. perambulator according to claim 1, it is characterised in that

When the handle is swung relative to baby's vehicle main body to certain orientation, in the cam contact piece with the cam By the upstream side in the mobile route of the cam bearing surface, downstream side changes for the position of bearing surface contact.

3. perambulator according to claim 1 or 2, it is characterised in that

In the state of the handle is located at the 1st position, the cam bearing surface is configured to, its positioned at only with the handle It is contacted with from the 1st position to cam bearing surface described in the 2nd position swing process in the position of cam contact piece On a part of facing position；

In the state of the handle is located at the 2nd position, the cam bearing surface is configured to, its positioned at only with the handle It is contacted with from the 1st position to cam bearing surface described in the 2nd position swing process in the position of cam contact piece On a part of facing position.

4. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part edge by the cam bearing surface The back leg action,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

The cam contact piece has at least two cam contact protuberances prominent to the cam bearing surface,

Cam contact protuberance configuration along the cam bearing surface with the swing of the handle formed move road On the position being separated from each other on footpath,

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

When some position between the 1st position and the 2nd position of the handle, the cam bearing surface is same When contacted with the two cam contact protuberances for being moved along it path and being adjacent to.

5. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part edge by the cam bearing surface The back leg action,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

The cam contact piece cam contact protuberance prominent to the cam bearing surface from two is formed, i.e. convex with the 1st Wheel contact protuberance and the 2nd cam contact protuberance, the 1st cam contact protruding parts are in the handle by described 1st Put to the 2nd position move when the cam bearing surface mobile route on upstream side, and the 2nd cam contact Protuberance is then located at the downstream side on the mobile route of the cam bearing surface,

In the state of the handle is located at the 1st position, the cam bearing surface only with the 1st cam contact protuberance It is facing with the 1st cam contact protuberance in the 2nd cam contact protuberance and contact therewith,

In the state of the handle is located at the 2nd position, the cam bearing surface only with the 1st cam contact protuberance It is facing with the 2nd cam contact protuberance in the 2nd cam contact protuberance and contact therewith.

6. perambulator according to claim 5, it is characterised in that

When 1 centre position of the handle between the 1st position and the 2nd position, the cam bearing surface It is facing with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which and only with the 1st cam Contact protuberance is in contact,

When 2 centre position of the handle between the 1st position and the 2nd position, the cam bearing surface It is facing with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which and only with the 2nd cam Contact protuberance is in contact.

7. perambulator according to claim 6, it is characterised in that

When some position between the 1st centre position and the 2nd centre position of the handle, the cam supports Junction is in contact with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which.

8. the perambulator according to any one in claim 5~7, it is characterised in that

When the axis of oscillation swung along the handle relative to baby's vehicle main body is observed, by the handle relative to described Baby's vehicle main body swing axis of oscillation to each position of the cam bearing surface air line distance by one on cam bearing surface Hold it is progressively longer to the other end on cam bearing surface, wherein, one end on the cam bearing surface is the handle by described 1st position to the 2nd position swing when moving direction on front side, and the other end on the cam bearing surface is institute State handle from the 1st position to the 2nd position swing when moving direction on rear side,

Moreover, when the handle is located at 2 position, the swing that is swung by the handle relative to baby's vehicle main body Axis to the 2nd cam contact protuberance air line distance than the pendulum that is swung by the handle relative to baby's vehicle main body The air line distance of dynamic center to the 1st cam contact protuberance is short.

9. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part edge by the cam bearing surface The back leg action,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

When the oscillation center swung along the handle relative to baby's vehicle main body is observed, by the handle relative to institute State baby's vehicle main body swing oscillation center to each position of the cam bearing surface air line distance by cam bearing surface One end is progressively longer to the other end on cam bearing surface, wherein, one end on the cam bearing surface is the handle by can The front side on moving direction when a lateral opposite side in hunting range is swung, and the other end on the cam bearing surface The rear side on moving direction when being swung for the handle by the lateral opposite side in swingable scope, moreover, described convex The width taken turns the edge direction parallel with the axis of oscillation of the handle of bearing surface and formed is by one on the cam bearing surface The other end on the cam bearing surface of the rear side on as moving direction is held to become larger.