JP6826006B2 - stroller - Google Patents

Description

The present invention relates to a stroller for carrying an infant, and in particular, it is possible to switch between a face-to-face type in which the baby is in a hand-pushed state facing the infant and a rear-side type in which the infant is pushed from the back by rotating the hand-push rod. Regarding strollers.

For example, Patent Document 1 discloses a stroller in which a face-to-face type and a rear type can be switched by rotating a push rod.
Generally, in a stroller, a brake lever is provided at the upper end of a push rod, and the brake lever and the brake mechanism provided on the wheel are connected by a flexible wire such as a wire to transmit the operation of the brake lever to the brake mechanism. It has become like.

By the way, when the face-to-face type and the rear type are switched by the rotation of the push rod as in the stroller disclosed in Patent Document 1, the length of the wire arrangement path from the brake lever to the brake mechanism changes. Therefore, the wire connecting the brake lever and the brake mechanism needs to have a length that can be connected even in a long state of this path. For example, when the back type has a longer arrangement path than the face-to-face type, a length that becomes slack when switching to the face-to-face type with a shorter arrangement path is required, and therefore the face-to-face type is required. There is a problem that it is unsightly if the loose wire is visible from the outside when switching to.

In this respect, although it is not a stroller, in a walking carry in which a brake lever is attached to a height-adjustable hand-held member, Patent Document 2 is a technique for hiding the slack of the wire due to the height adjustment of the hand-held member from the outside. It is disclosed in.

The walking carry disclosed in Patent Document 2 is a stretchable double cylinder having "an outer pipe member (1) and an inner pipe member (2) that is slidably inserted into the outer pipe member (1) in the vertical direction. 10), a handle member (3) attached to the upper end (10a) of the double cylinder (10) and having a brake lever (31), and a lower end (10b) of the double cylinder (10). ), And a storage space (K) is formed on the lower surface (5b) side of the loading platform member (5), and the operating force of the brake lever (31) is used to oscillate the wheels (6). A flexible wire material (8) for transmitting operating force to be transmitted to the member (7) is provided, and one end (8a) of the flexible wire material (8) is attached to the brake lever (31) and the other end (31). 8b) is attached to the swinging member (7), and the rest is inserted into the double cylinder (10) and U-turned in the storage space (K) to form a U shape. When the double cylinder (10) is shortened by being stored so as to form a portion (8d), the U-shaped portion of the flexible wire material (8) is contained in the storage space portion (K). It is characterized in that (8d) is configured to be expanded and stored. "

Japanese Unexamined Patent Publication No. 2015-91696 Japanese Unexamined Patent Publication No. 2012-17004

The method of making the slack of the flexible wire material invisible in Patent Document 2 is based on the premise that it has a loading platform because it is a walking carry, and a storage space for accommodating the slack of the flexible wire material is provided on the bottom surface of the frame-shaped loading platform. It is to form.
However, it is complicated to separately provide a frame-shaped member such as a loading platform in a stroller, and the length at which the flexible wire can be slackened is limited to the size of the frame, so that the stroller wire is used. There is a problem that it is difficult to apply to a wire having a long wire length and a large difference in the length of the arrangement path between the face-to-face type and the back type.
Further, since the stroller generally has a foldable structure, when the frame member is provided, the frame member itself needs to have a foldable structure, and there is also a problem that the structure becomes complicated in this respect as well.
Further, when the frame member is folded, there is a problem that the slack of the wire cannot be accommodated in the folded state, resulting in an unsightly state.

The present invention has been made to solve such a problem, and to provide a stroller in which the slack of a flexible wire such as a wire for performing a brake operation is not unsightly even when the face-to-face type and the rear type are switched. I am aiming.

(1) The stroller according to the present invention has a pair of left and right front legs and rear legs provided with wheels at the lower ends, a brake mechanism provided in the vicinity of the wheels, and left and right front legs arranged at predetermined intervals. A seat frame forming a seat between the upper parts of the rear legs, a hand push rod provided so as to be rotatable back and forth, a brake lever provided on the upper part of the hand push rod, and an operation of the brake lever. A stroller provided with a flexible linear flexible wire material having flexibility to be transmitted to the brake mechanism, and capable of switching between a face-to-face type and a rear type by rotating the hand-push rod.
The flexible wire rod is arranged in a state where all or a part of the path from the brake lever to the brake mechanism is exposed to the outside.
The flexible wire rod connected to the brake mechanism of one of the left and right wheels has one end connected to the brake mechanism and runs upward along the one front leg and / or rear leg, and below the seat portion. After making a U-turn by curving so as to be convex on the other side of the left and right, the other end is connected to the brake lever along the one hand push rod.
The flexible wire rod connected to the brake mechanism of the other left and right wheel has one end connected to the brake mechanism and runs upward along the other front leg and / or rear leg, and below the seat portion. After making a U-turn by bending so as to be convex on one of the left and right sides, the other end is connected to the brake lever along the other hand-push rod.
It is characterized in that a stretchable tension member that pulls the flexible wire rod in the convex direction is provided at the curved portion of the flexible wire rod.

(2) Further, in the one described in (1) above, the tension member has a tubular connecting member through which the flexible wire rod can be movably inserted in the axial direction, and the connecting member has the flexibility. It is characterized in that a sex wire is inserted and pulled.

(3) Further, in the above (1) or (2), the backrest support member that can be folded over is provided, and the flexible wire rod is arranged so as to pass through the back surface side of the backrest support member. It is characterized by being done.

(4) Further, in the above-mentioned (1) or (2), the flexible wire rod having a foldable backrest support member and a backrest sheet material stretched on the backrest support member. Is disposed so as to pass through the front side of the backrest support member and then pass through the back side of the backrest sheet material.

In the stroller according to the present invention, the flexible wire rod connecting the brake mechanism provided at the lower part of the stroller and the brake lever provided at the upper part of the stroller is curved below the seat portion in the middle of the arrangement path. Since it is made to make a U-turn and the convex portion that has made a U-turn is pulled in the convex direction by a tension member, the length of the arrangement path when the hand-push rod is rotated to switch between the rear type and the face-to-face type. The slack to absorb the difference has an orderly shape, does not hang down in a disorderly manner, and is not unsightly.

It is a perspective view of the schematic structure of the stroller which concerns on embodiment of this invention in the state of the rear type. It is an enlarged view of a part of FIG. It is a perspective view of the stroller according to the embodiment of the present invention in a state where the backrest is tilted down in a state where the stroller is rearward (No. 1). It is a perspective view of the stroller according to the embodiment of the present invention in a state where the backrest is tilted down in a state where the stroller is rearward (No. 2). It is a perspective view of the schematic configuration of the stroller according to the embodiment of the present invention in a face-to-face manner and the backrest is tilted down. It is a perspective view of the state of FIG. 5 looking up from below. It is a partial enlarged view of FIG. It is a perspective view of the stroller which concerns on embodiment of this invention in a folded state. It is a rear view of the stroller which concerns on embodiment of this invention in a folded state.

As shown in FIG. 1, the stroller 1 of the present embodiment has a pair of left and right front legs 5 provided with front wheels 3 at the lower ends, which are arranged at a predetermined distance from each other, and the front legs 5 are separated from each other by a predetermined distance like the front legs 5. A seat is provided between the rear legs 9 having the rear wheels 7 at the lower ends, the brake mechanism 11 provided in the vicinity of the front wheels 3, and the upper parts of the left and right front legs 5 and the rear legs 9. The seat frame 13 to be formed, the hand push rod 15 provided so as to be rotatable back and forth, the brake lever 17 provided on the upper part of the hand push rod 15, and the linear shape for transmitting the operation of the brake lever 17 to the brake mechanism 11. The flexible wire rod 19 and the pulling member 21 that pulls the flexible wire rod 19 in a predetermined direction below the seat frame 13 are provided, and the face-to-face type and the back surface type can be switched by rotating the hand push rod 15. It is possible.
Details of the above-mentioned members constituting the stroller 1 and components other than the above will be described below.
In addition, in FIGS. 1 to 9, only the members constituting the skeleton of the stroller 1 are shown, and the seat seat for the infant and the hood for the sunshade are not shown.

<Front leg>
As shown in FIG. 1, the front leg 5 is composed of a substantially linear pipe in which a front wheel 3 is provided at a lower end and the upper end is pivotally attached to the upper end of the rear leg 9 via a leg connecting member 23.
By rotatably connecting the upper end of the front leg 5 to the upper end of the rear leg 9, the angle formed by the upper ends of the front leg 5 and the rear leg 9 becomes smaller in the folded state, and the front leg 5 and the rear leg 9 come closer to each other. (See FIG. 8).
A footrest 25 is provided below the pair of front legs 5 so as to extend over the left and right front legs 5. Further, a front leg connecting stay 27 for connecting the left and right front legs 5 is provided in the vicinity of the footrest 25.

<Front wheel>
Each front wheel 3 is provided with a fixing means 29 for fixing the rotation of the front wheel 3 by operating the foot.
Further, each front wheel 3 is configured to be brakeable by the brake mechanism 11.

<Hind legs>
As shown in FIG. 1, the rear leg 9 is provided by a gently curved pipe in which a rear wheel 7 is provided at the lower end and the upper end is pivotally attached to the upper end of the front leg 5 via a leg connecting member 23. It is configured.
The left and right rear legs 9 are connected by a rear leg connecting stay 31 provided at the lower part.
Further, a bracket 33 is pivotally attached to the middle of the left and right rear legs 9 in the height direction, and the lower end of the hand push rod 15 is rotatably attached to the bracket 33.

<Rear wheel>
Similar to the front wheel 3, the rear wheel 7 is provided with a fixing means 35 for fixing the rotation of the rear wheel 7 by operating the foot.
In the present embodiment, the brake mechanism for braking the rear wheels 7 is not provided, but a brake mechanism for braking the rear wheels 7 may be provided in place of the front wheels 3 or together with the front wheels 3.

<Brake mechanism>
The brake mechanism 11 is provided on each of the front wheels 3 and brakes each of the front wheels 3 by operating the flexible wire rod 19.
Although the details of the brake mechanism 11 are not shown, the mechanism is such that the brake pad is pressed against the front wheel 3 by pulling the flexible wire rod 19.

<Seat frame>
The seat frame 13 supports a seat seat (not shown), is composed of a pipe formed in a square shape, and both ends of the front side portion thereof are formed of the left and right front legs 5 via the seat frame mounting member 37. It is attached to the top.
Seat seat support members 14 for supporting a seat seat (not shown) are provided at both ends of the front side of the seat frame 13.

<Hand rod>
The hand push rod 15 has an inverted U shape, and its lower end is rotatably attached to the bracket 33. By rotating the hand push rod 15 back and forth, the rear type and the face-to-face type can be switched.
An operation unit 39 for releasing the unfolded state and making it a foldable state is provided on the upper side of the push rod 15.

<Brake lever>
The brake lever 17 is formed of a rod-shaped body provided near the upper end of the hand-push rod 15 so as to extend to the left and right of the hand-push rod 15. One end of a flexible wire rod 19 for operating the brake mechanism 11 is connected to the brake lever 17, and the flexible wire rod 17 is gripped so as to be close to the upper side of the hand push rod 15. The 19 can be pulled, whereby the brake mechanism 11 can be operated to brake the front wheels 3. Further, the brake can be released by releasing the gripped brake lever 17.

<Other components>
In the stroller 1 of the present embodiment, in addition to the above-mentioned components, the lower end side is attached to the shaft member 41 attached to the bracket 33, the rear end side is attached to the upper end of the shaft member 41, and the front end is attached to the leg connecting member 23. A pair of armrests 43, a guard arm 45 attached so as to connect the left and right leg connecting members 23, a plurality of C-shaped hood support members 47 whose lower end side is pivotally attached to the upper end portion of the shaft member 41, and a shaft on the lower end side. An inverted U-shaped backrest support member 49 that is pivotally attached to a member 41 and can be tilted, and a substantially T-shaped, T-shaped vertical piece 51 is pivotally attached to the upper side of the backrest support member 49, and a T-shaped horizontal piece. Both ends of the 53 have a headrest 57 pivotally attached to the rear end side of the armrest 43 via a support side member 55.
The upper end of the seat (not shown) is supported by the upper end of the backrest support member 49, and the lower end is supported by the seat support member 14.

<Flexible wire>
The flexible wire rod 19 is formed by inserting a steel wire into a vinyl outer tube, and is arranged in a state where the entire path from the brake lever 17 to the brake mechanism 11 is exposed to the outside. Then, the flexible wire rod 19 connected to the brake mechanism 11 of the wheel on the left side in the drawing is along the front leg 5 on the left side after the lower end is connected to the brake mechanism 11 on the left side, and is below the seat frame 13. After making a U-turn by curving so as to be convex to the right side, the upper end is connected to the brake lever 17 through the back side of the backrest support member 49 and along the left hand push rod 15.
By making a U-turn below the seat frame 13, a slack is formed so that the change in wire length when the path of the flexible wire 19 changes due to this slack can be absorbed. This point also applies to the flexible wire rod 19 that operates the brake mechanism 11 on the right side in the figure below.

Further, the flexible wire rod 19 is manually pushed by being fixed in position to the hand push rod 15, the shaft member 41, etc. via the position regulating member 59 at several places in the arrangement path from the brake lever 17 to the brake mechanism 11. It is along the rod 15 and the shaft member 41. The position regulating member 59 has a tubular portion through which the flexible wire rod 19 can be inserted, and the flexible wire rod 19 is inserted through the tubular portion so as to be movable in the axial direction.
The flexible wire rod 19 connected to the brake mechanism 11 of the wheel on the right side is also fixed in position on the push rod 15 and the shaft member 41 by the position regulating member 59 as in the case of the left side.

<Tensile member>
The tension member 21 is a stretchable member that pulls the flexible wire 19 in the convex direction at the U-turned convex portion of the flexible wire 19. The tension member 21 of the present embodiment is composed of a string-wound spring 63 whose tip end side is connected to the flexible wire rod 19 via the connecting member 61 and whose base end side is fixed to the seat frame 13.
By pulling the flexible wire 19 in the convex direction by the tension member 21, the slack formed by making a U-turn of the flexible wire 19 is forced to follow the seat portion without bending downward due to gravity. ing.

The connecting member 61 is preferably a tubular member in which the flexible wire rod 19 is movably inserted in the axial direction. By making the connecting member 61 such a tubular member, the connecting member 61 can be formed. Since the connecting member 61 moves toward the convex top along the flexible wire 19 when pulled by the string-wound spring 63, the curved shape of the U-turn is stable and the operation by the tension member 21 is smooth.

The functions of the stroller 1 configured as described above will be described below, focusing on the path of the flexible wire 19 and the action of the tension member 21 so that the slack of the flexible wire 19 is not unsightly.
The states shown in FIGS. 1 and 2 are a state in which the hand push rod 15 is a rear type and a state in which the backrest support member 49 is raised.
In this state, since the arrangement path of the flexible wire rod 19 is shorter than that in the state where the hand-push rod 15 is face-to-face, the slack normally generated in the flexible wire rod 19 hangs down below the seat frame 13. It will be. However, in the present embodiment, since the flexible wire rod 19 is U-turned below the seat frame 13 and the convex portion U-turned by the string winding spring 63 is pulled in the convex direction, the shape of the slack is formed. It has a predetermined shape (U-shape) and does not hang down, but follows the seat surface of the seat frame 13.

When the backrest support member 49 is tilted in the rear state, the flexible wire 19 is pushed toward the back side and the path of the flexible wire 19 becomes long (see FIGS. 3 and 4). At this time, the string winding spring 63 Is stretched so that this change in length can be absorbed. That is, when the flexible wire rod 19 is pushed toward the back surface side, the arrangement path of the flexible wire rod 19 becomes long, and the slack length formed below the seat frame 13 becomes short, but this shortened portion. The slack formed in the states of FIGS. 1 and 2 is shortened and the string winding spring 63 is stretched in order to cover the above. When the string-wound spring 63 is stretched, as shown in FIGS. 3 and 4, the area of the ring surrounded by the facing U-shapes of the left and right flexible wire rods 19 below the seat frame 13 is shown in FIGS. Since it is smaller than the state shown in FIG. 2, it can be seen that the slack is shortened.

The reason why the flexible wire rod 19 is arranged on the back surface side of the backrest support member 49 is as follows.
If the flexible wire 19 is arranged on the surface side of the backrest support member 49, the flexible wire 19 is located between the seat (not shown) and the backrest support member 49. When the hand push rod 15 is rotated in this state, the flexible wire rod 19 is pulled along with the rotation, and the backrest seat is pulled up. In this respect, by disposing the flexible wire rod 19 on the back surface side of the backrest support member 49, it is possible to prevent the seat seat from being pulled up due to the rotation of the hand push rod 15.

When the hand-push rod 15 is rotated to make it face-to-face from the state shown in FIGS. 3 and 4, the slack length of the flexible wire rod 19 is further shortened, so that the slack is increased as shown in FIGS. 5 to 7. As it becomes smaller, the string winding spring 63 is further stretched to absorb this change in length.
In this state, as shown in FIGS. 5 to 7, the area of the ring surrounded by the facing U-shapes of the left and right flexible wire rods 19 below the seat frame 13 is larger than that in the states of FIGS. 3 and 4. From the fact that it is smaller, it can be seen that the slack has become shorter.

Further, when the stroller 1 is folded by operating the operation unit 39, as shown in FIGS. 8 and 9, the seat frame 13 is tilted in the vertical direction and the U-shaped slack in the flexible wire rod 19 is formed. In the vertical direction, in other words, the U-shape faces horizontally. That is, even when the stroller 1 is folded, the slack of the flexible wire rod 19 is along the seat portion, so that it does not hang unsightly.

As described above, in the present embodiment, the flexible wire rod 19 that connects the brake mechanism 11 provided at the lower part of the stroller 1 and the brake lever 17 provided at the upper part of the stroller 1 to perform the braking operation. Since the convex portion that has been U-turned by the string winding spring 63 is pulled in the convex direction by being curved below the seat frame 13 in the middle of the arrangement path, the hand push rod 15 can be rotated. The slack for absorbing the difference in the length of the arrangement path when the backrest support member 49 is raised or tilted has an orderly shape, does not hang in a disorderly manner, and is not unsightly.
That is, by forcibly pulling the flexible wire rod 19 that makes a U-turn by the tension member 21 in one direction, the shape of the slack is maintained at a predetermined shape so as to follow the seat frame 13, which is unsightly. It is designed not to become.

As described above, the stroller 1 has many changes of state, such as an unfolded state and a folded state, a rear type and a face-to-face type, and a state in which the backrest support member 49 is raised and a state in which the backrest support member 49 is raised and tilted. The length of the arrangement path of the flexible wire rod 19 arranged so as to connect the sides varies greatly, but according to the present embodiment, although it is a simple mechanism, it can cope with these various changes. The slack provided in the flexible wire 19 can be prevented from becoming unsightly.

In the above description, an example in which the flexible wire rod 19 is arranged on the back surface side of the backrest support member 49 is shown. In this case, as shown in FIG. 4, since the flexible wire rod 19 is pushed downward by the backrest support member 49, it is necessary for the flexible wire rod 19 to secure this length as a slack.
In order to make the slack of the flexible wire 19 as short as possible and to prevent the seat seat of the flexible wire 19 from being pulled up due to the rotation of the push rod 15, the backrest sheet material is stretched on the front surface of the backrest support member 49. was set, the flexible wire 19 to both ends of the backrest sheet material opens the insertable hole, the back side of the flexible wire 19 inserted through so the hole from the front side of the back support member 19 said back sheet material It may be arranged so as to pass through.

1 Stroller 3 Front wheel 5 Front leg 7 Rear wheel 9 Rear leg 11 Brake mechanism 13 Seat frame 14 Seat seat support member 15 Hand rod 17 Brake lever 19 Flexible wire 21 Tensile member 23 Leg connecting member 25 Footrest 27 Front leg connecting stay 29 Fixing means (front wheel)
31 Rear leg connecting stay 33 Bracket 35 Fixing means (rear wheel)
37 Seat frame mounting member 39 Operation part 41 Shaft member 43 Armrest 45 Guard arm 47 Hood support member 49 Backrest support member 51 Vertical piece 53 Horizontal piece 55 Support side member 57 Headrest 59 Position regulation member 61 Connecting member 63 String spring

Claims (4)

A pair of left and right front legs and rear legs arranged at predetermined intervals, with wheels provided at the lower ends, a brake mechanism provided near the wheels, and a seat between the left and right front legs and the upper parts of the rear legs. A seat frame forming the above, a hand push rod provided so as to be rotatable back and forth, a brake lever provided on the upper portion of the hand push rod, and flexibility to transmit the operation of the brake lever to the brake mechanism. A stroller equipped with a linear flexible wire rod that can be switched between a face-to-face type and a rear type by rotating the hand-push rod.
The flexible wire rod is arranged in a state where all or a part of the path from the brake lever to the brake mechanism is exposed to the outside.
The flexible wire rod connected to the brake mechanism of one of the left and right wheels has one end connected to the brake mechanism and runs upward along the one front leg and / or rear leg, and below the seat portion. After making a U-turn by curving so as to be convex on the other side of the left and right, the other end is connected to the brake lever along the one hand push rod.
The flexible wire rod connected to the brake mechanism of the other left and right wheel has one end connected to the brake mechanism and runs upward along the other front leg and / or rear leg, and below the seat portion. After making a U-turn by bending so as to be convex on one of the left and right sides, the other end is connected to the brake lever along the other hand-push rod.
A stroller characterized in that a stretchable tension member that pulls the flexible wire rod in the convex direction is provided at the curved portion of the flexible wire rod. The tensile member has a tubular connecting member through which the flexible wire can be movably inserted in the axial direction, and the flexible wire is inserted through the connecting member and pulled. The stroller according to item 1. The stroller according to claim 1 or 2, wherein the stroller has a foldable backrest support member, and the flexible wire rod is arranged so as to pass through the back surface side of the backrest support member. It has a backrest support member that can be folded up and a backrest sheet material stretched on the backrest support member, and the flexible wire rod passes through the front side of the backrest support member and then back side of the backrest sheet material. The stroller according to claim 1 or 2, wherein the stroller is arranged so as to pass through the stroller.