JP2524367Y2 - Stroller folding mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding mechanism for a stroller, and more particularly to a structure in which a stroller body can be compactly folded in the front-rear direction and the width direction in response to the operation of an opening / closing operation mechanism provided on a pushrod. The present invention relates to a folding mechanism for a baby stroller.

[0002]

2. Description of the Related Art A structure in which a stroller body is folded close to the front-rear direction and then several connecting rods extending between a pair of opposing leg rods are folded in the width direction to fold the entire stroller into a flat U-shape. Strollers have been known for some time.

[0003]

However, the stroller of the conventional structure has a structure for approaching the stroller body in the front-rear direction, and a plurality of connecting rods and a hand pushing rod inserted between two opposing leg rods. Since the structure for folding in the width direction is configured separately and there is no interlocking movement of both, the connecting rod can not be automatically folded in the width direction in conjunction with the folding of the frame in the front-back direction Was.

For this reason, when folding a stroller having a conventional structure, a first folding operation for folding the stroller by approaching the frame in the front-rear direction is first performed, and then, a hand push and a plurality of connecting rods inserted between the opposing leg rods are performed. It is necessary to perform a second folding operation to fold the rod in the width direction so as to have a U-shape in a plane, and there is a disadvantage that the two operations are not linked and the folding operation is complicated as a whole.

[0005]

The purpose of the present invention is to cope with the above-mentioned situation. When the lock of the opening / closing operation mechanism provided on the hand push rod is released, and the body approaches in the front-back direction, the opposition is interlocked with this movement. It is an object of the present invention to provide a folding mechanism for a stroller, which is extremely easy to operate and is configured such that several connecting rods inserted between leg rods automatically perform a folding operation in a width direction.

[0006]

[Points of the invention] The present invention is based on a circle with a pair on the left and right.
Cylindrical front and rear legs, and the left and right front and rear legs
A pair of armrest rods for fixing the upper ends of the rods,
Connect the legs or rear legs in the width direction and divide the length approximately equally
A connecting rod pivotally mounted at a position where
A stroller provided with a push rod raised from the middle of the rod
In the vicinity of the upper and lower ends of the front leg rod and the rear leg rod.
An elevating guide groove formed in a vertically elongated shape, and the front leg rod and the rear leg.
Folding drive mounted to be able to move up and down in the space inside the rod
And a folding drive lever having an upper end pivotally mounted on the armrest rod.
And the outer circumference of the cylindrical front and rear legs
Cylinder with a vertically elongated crank-shaped guide groove mounted on Noh
Shaped rotary drive, and the rotary drive
Formed at both end portions of each of the connecting rods rotating together with the driving body.
The folding drive link and the folding drive link.
The folding drive rod is pivotally mounted through the lift guide groove,
In addition, the rotary drive and the folding drive rod move up and down
Attached through the guide groove and the guide groove for folding operation
In conjunction with the elevation of the front end of the armrest rod, the folding
The drive link and the folding drive rod move up and down to rotate the rotary drive.
Stroller with moving body rotating with the cylindrical body
The main point of the invention is a folding mechanism for a stroller, which is characterized in that the folding mechanism is also folded in the width direction .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

A stroller indicated generally by A comprises a pair of opposed front leg bars 1, 1 and a pair of rear leg bars 2, 2, a pair of armrest bars 3, 3, and a pair of front and rear leg bars in the width direction. It is configured to be foldable by several connecting rods 4a, 4b, 4c to be connected and a push rod 5 standing upright from an intermediate portion of the rear leg rods 2, 2.

The push rod 5 has both ends bent in an L-shape.
The entire shape is formed by a U-shaped gripping rod 51 and two straight rods 52, 52 linearly extending from both ends of the gripping rod 51 via lock mechanisms 6 and 6 for maintaining folding. It is formed so as to have a shape or an inverted U shape.

The gripping rod 51 and the two straight rods 52, 52 are rotatably connected via a lock mechanism 6 for maintaining folding.

The lock mechanism 6 for maintaining the folding includes a cylindrical lock receiving body 61 having fitting grooves 64...
A cylindrical lock body 62 having fitting projections 63, 63 protruding at the lower end.
And the combination of

A cylindrical lock receiver 61 is mounted on the upper end of the straight rods 52, 52, and is provided on the lower half of the cylindrical body.
The upper ends of the grippers 51, 51 are fitted in the upper ends of the grippers 51, 52, and the lower ends of the grippers 51, 51 are rotated in the circumferential direction of the shafts in the upper half of the upper part of the mounting portion of the rods 52, 52 Rotation of the shaft around the central axis)
Is inserted so as to enable

Although not shown, the lock body 62 can be raised and lowered to a position slightly above the lower end of the gripping rod 51, specifically, to an upper position corresponding to the length of the upper half of the lock receiving body 61. The lower end of the gripping rod 51 is inserted by a predetermined length inside a lock receiving body 61 having a lower half fixed to the upper end of the straight rod.

The lock body 62 attached near the lower end of the gripping rod 51 is moved by an operation wire 71 which is moved up and down by operation of the opening / closing operation unit 7 provided on the hand pushing rod 5.
Is moved up and down near the lower end of the operation wire 7.
1 is fixed to a connecting shaft protruding from an elevating body (not shown) provided at an intermediate portion of the first member. (Another lifting / lowering body (not shown) is attached to the tip of the lifting / lowering operation wire 71, and a part of the lifting / lowering body is opened / closed via a drive shaft.
It is connected to. )

When the operation knob 74 is pushed in, the opening / closing operation section 7 attached to the push rod 5 has a disk-shaped driving plate 75 in which the distal end of the operation knob 74 locks the end of the operation wire 71 around the circumference. Is rotated, and the operation wire 71 is pulled up (moved up and down) by the rotation of the drive plate 75. (See Fig. 11)

Reference numeral 8 denotes a lower end portion of the push rod 5, specifically, a straight rod 5.
An opening / closing operation lock body which is mounted at a position slightly higher than a pivotal connection portion between the folding operation bracket 2 and the folding operation bracket 9 so as to be able to move up and down, and a lower end surface of which is a notch L-shaped notch 81;
Bracket for folding operation 9 when stroller is assembled
The L-shaped fitting portion 91 formed at the tip of
The stroller is maintained in an assembled state by fitting the stroller.

The opening and closing operation lock body 8 is to lift the operating wire 71 for lifting by the operation of the opening and closing unit 7 is attached to the distal end of the operating wire 71 and the inner straight rod 52 Is connected to a drive shaft (not shown) protruding from a side surface of a lifting / lowering body (not shown) for raising / lowering. Incidentally, combined structure of the lifting body as well as the drive shaft connecting both raise and lower the lock member 8 and which for opening and closing is omitted details regarding this description is a known.

Each of the connecting rod 4a for connecting the pair of front leg rods 1 and 1 in the width direction and the connecting rod 4b for connecting the pair of rear leg rods 2 and 2 in the width direction are almost equally divided in length. The cylindrical rods 41a, 41a, 41b, and 41b are attached to the outer ends of two connecting rods other than the center of the connecting rods 4a and 4b which are foldable at the positions where the connecting rods are located. Are integrally formed, and these cylindrical bodies 41a, 41a and 41b, 41
b is mounted on the outside of the rotary drive bodies 11, 11 rotatably mounted on the front leg rod 1 and the rear leg rod 2, and they are integrated.

The cylindrical body 41a or 41b and the rotary driving body 11
Fitting plate 1 of appropriate width protrudingly formed at the upper end of rotary drive 11
2 and 12 are integrated by fitting them into fitting grooves 42a formed in the inner peripheral edges of the upper ends of the cylindrical bodies 41a and 41b, respectively. When the rotation driving body 11 rotates, the cylinders are interlocked with this rotation. The bodies 41a and 41b are also configured to rotate by the same angle. (See FIGS. 8 and 9)

Reference numeral 41c denotes an annular stopper fixed to the front leg rod 1 and the rear leg rod 2 in the vertical position of the cylindrical bodies 41a and 41b, and a cylindrical body 4 attached to the front leg rod 1 and the rear leg rod 2.
1a, 41b and the rotation driving body 11 are prevented from moving in the vertical direction along the outer peripheral portion of the front leg rod 1 or the rear leg rod 2, and are always moved in the circumferential direction of the leg rod (in the direction around the center axis of the leg rod). (Rotation) to ensure accurate rotation.

A guide groove formed in a vertically long S-shape or a crank shape is provided in a circumferential body of the rotary driving body 11 formed in a cylindrical shape.
A drive protruding from the lower end of a foldable drive rod 14 mounted in the front leg rod 1 or the rear leg rod 2 so as to be able to move up and down in the guide groove 13 is provided. Axis 14
a, and the drive shaft 14a vertically moves up and down in the front leg rod 1 to rotate the rotary driving body 11 (the rotating body 41a).
At the same time), the guide groove 13 is rotated in the folding direction or the assembling direction by the inclination angle. (Arrow c in FIG. 10)
reference)

The rotation guide groove 13 which is vertically formed in the peripheral body of the rotary driving body 11 is provided when the drive shaft 14a is pulled up to the highest point inside the front leg rod 1 (in the rear leg rod 2, the drive shaft 14a is driven).
14a is pushed down to the lowest point in the rear leg 2)
The rotation driving body 11 (the cylindrical bodies 41a and 41
(b) at the same time, it is formed to have an inclination angle that can be rotated in the folding direction by an angle of about 90 degrees.

The folding drive rod 14, which is mounted in the front leg rod 1 and the rear leg rod 2 so as to be able to move up and down, has driving shafts 14a and 14b projecting laterally from upper and lower ends of a driving rod having a predetermined length. The two drive shafts 14a and 14b penetrate two vertically elevating guide grooves 2a formed vertically above and below the front leg rod 1 or the rear leg rod 2, respectively, and project their distal ends outward.

A drive shaft 14a projecting laterally from the upper end of the foldable drive rod 14 attached to the front leg rod 1 so as to be able to move up and down is connected to the lower end of a foldable drive link 31 whose upper end is pivotally supported by the armrest rod 3. And a drive shaft 14b projecting laterally from the upper end of a folding drive rod 14 attached to the rear leg rod 2 so as to be able to move up and down.
Is a folding drive link whose upper end is pivotally supported by the armrest rod 3.
It is connected to the lower end of 31 '.

The movement (upward or downward movement) of the folding drive link 31 extending between the front leg 1 and the armrest 3 and the folding drive link 31 'extending between the rear leg 2 and the arm3. ) Are configured to perform the exact opposite movement.

That is, as shown in FIG. 7, when the stroller is in the assembled state, the lower end portion of the folding drive link 31 which extends over the front leg rod 1 and the armrest rod 3 is connected to the lifting guide groove 2.
a, and the lower end of the folding drive link 31 ', which extends across the rear leg rod 2 and the armrest rod 3, is located at the uppermost position of the elevating guide groove 2a, and when the stroller is folded. , Base end of armrest rod 3 and push rod 5
When the connecting portion with the lower end of the folding drive link 31 ′ is pushed down, the lower end of the folding drive link 31 ′ extending between the armrest rod 3 and the rear leg rod 2 is pushed down in the direction indicated by the arrow a in FIG. The folding drive link 31 inserted between the rod 1 and the armrest rod 3 performs a movement to be pulled up in a direction indicated by an arrow b in FIG.

Reference numeral 10 denotes a protective cover attached to the inner surface of the armrest rod 3, which accommodates the inside of the folding drive link 31, 31 'near the upper end thereof, so that the infant sitting in the stroller can carry the folding drive link 31. , 31 'is prevented from damaging the fingertips and the like by touching the upper end thereof, and the design is aesthetically treated.

The other connecting rod 4c includes a link 82, which is inserted between the front leg rod 1 and the folding operation bracket 9,
Both ends are fixed to the central portion of 82, and a shaft rod divided into several parts is attached to the intermediate portion via a pivot.

[0029]

The operation of the present invention configured as described above operates as follows.

(1) Folding operation of the stroller When the stroller is folded, the operation knob 74 of the opening / closing operation unit 7 provided on the push rod 5 is pushed inward by a known operation means, so that the tip of the operation knob 74 is driven by the driving plate 75. To rotate.

Since the base end of the operation wire 71 is attached to the circumferential portion of the drive plate 75, the operation wire 71 is pulled upward with the rotation of the drive plate 75, and the operation is performed in conjunction with this. The elevating body (not shown) attached to the intermediate portion of the operation wire 71 and the elevating body (not shown) attached to the tip of the operation wire 71 rise.

[0032] increase conjunction with the lifting body mounted on the distal end of the operating wire 71 (not shown) is increased, the opening and closing operation lock body 8 linked rises to this, the result
A locking portion 81 formed on the lower surface of the opening / closing operation lock body 8;
Fitting portion 9 formed on upper part of folding operation bracket 9
1 and the frame constituting the stroller A is made to approach in the front-rear direction. (See Fig. 4)

[0033] In the middle portion of the operating wire 71, since the connecting lock member 62 for maintaining the folding via the connecting shaft, the lock member for maintaining the folding at the same time as the increase in the opening and closing operation lock member 8 62 also rises, the lock of the lock mechanism 6 for maintaining the folding is released, and the gripping rod 51 can be bent in a U-shape.

[0034] When the engagement between the operation bracket 9 fold and the opening and closing operation lock body 8 is opened, while the upper end of the folding operation bracket 9 is rotated along Koashi杆2 so as to be downward At the same time, the base end of the armrest rod 3 also moves downward, and in conjunction with this movement, the distance between the front leg rod 1 and the rear leg rod 2 approaches, and folding in the front-back direction is performed. (See Fig. 4)

When the front leg rod 1 and the rear leg rod 2 are folded in a direction approaching each other while the base end of the arm rod 3 is pushed down, the folding arm 3 is mounted so as to be able to move up and down within the arm rod 3 and the front leg rod 1. The folding drive link 31 connecting the upper end of the drive rod 14 (drive shaft 14a) is pulled upward,
Further, the folding drive link 31 ′ connecting the armrest rod 3 and the upper end (drive shaft 14 b) of the folding drive rod 14 movably mounted in the rear leg rod 2 is pushed down.
(See arrows a and b in FIG. 7)

A drive shaft 14a projecting from the lower end of a folding drive rod 14 mounted to be movable up and down in the front leg rod 1 is vertically drilled in a rotary drive body 11 rotatably mounted on the outer periphery of the lower end of the front leg rod 1. Since the drive shaft 14 rises linearly, the rotary driving body 11 is fitted in the S-shaped or crank-shaped guide groove 13.
However, it rotates along the inclined shape of the S-shaped or crank-shaped guide groove 13, and simultaneously rotates the cylindrical body 41a integrated outside thereof.

The cylindrical body 41a, 41a attached to the two opposing leg rods 1, 1 is integrated with both sides of the connecting rod 4a, which is substantially equally divided into three parts.
It rotates in the direction indicated by the arrow c in FIG. 10 and is folded in a plane U-shape as shown by the two-dot chain line in FIG.

In the same manner as described above, when the foldable drive rod 14b attached to the rear leg rod 2 so as to be able to ascend and descend is pushed down by the lowering of the foldable drive link 31 ', the foldable drive rod 13 projects laterally from the lower end thereof. The drive shaft 14b descends in the crank-shaped guide groove 13 formed in the rotary drive body 11, and as a result, the rotary drive body 11 and the cylindrical body 41 as in the case of the front leg rod 1.
By rotating b in the folding direction, the connecting rod 4b approaches in the width direction and is folded in a plane U-shape.

The connecting rod 4c mounted above the two connecting rods 4a and 4b is connected to the two connecting rods 4a and 4b.
When but a motion folding approaches the width direction, since there is no mechanism that interfere with particular folding, and access to front-rear direction of the same folding is performed stroller building frame in conjunction with the movement, in the width direction The folding is performed simultaneously.

After the above operation is completed, when the pull-up of the opening / closing operation unit 7 provided on the push rod 5 is released, the push rod 5
The lock mechanism 6 for maintaining the folding formed in the middle of the step functions to accurately maintain the flat U-shaped folded state.

(2) Stroller assembly operation

When assembling the stroller in the folded state, the operation just opposite to the folding operation may be performed.

That is, as shown in FIG. 4, when the distance between the front leg rod 1 and the rear leg rod 2 is reduced and the push rod 5 of the stroller in the folded state is pulled upward, the armrest rod 3 is interlocked with this. Is pulled up to the position shown in FIG.

As shown in FIG. 3, when the armrest rod 3 is pulled up to a horizontal position, the upper end (drive shaft 14a) of the folding drive rod 14 which is attached to the armrest rod 3 and the front leg rod 1 so as to be able to move up and down. ) And the folding drive link
31 is pushed down, and the upper end (drive shaft 14) of the foldable drive rod 14 mounted so as to be able to move up and down in the armrest rod 3 and the rear leg rod 2
b), the folding drive link 31 'is pulled upward.

When the fold drive link 31 is lowered and the fold drive link 31 'is raised at the same time, the fold drive rods 14, 14 having their upper ends connected thereto perform the same movement, and as a result, the connection which has been folded in a plane U-shape. The rods 4a and 4b rotate from the state shown by the two-dot chain line in FIG. 10 to the direction shown by the solid line in FIG. 10 to develop in the width direction, thereby completing the stroller assembly.

[0046]

According to the present invention, as described above, the folding drive links 31, 31 'are inserted between the folding drive rods 14, 14 mounted on the front leg rod 1 and the rear leg rod 2 so as to be able to move up and down and the armrest rod 3. The drive shafts 14a, 14b projecting from the lower end portions of the folding drive rods 14, 14 are fitted into the fitting grooves 13, 13 of the rotary drive bodies 11, 11 mounted on the front leg rod 1 and the rear leg rod 2, respectively. Therefore, when the folding operation of the armrest rod 3 is performed, the rotary driving bodies 11, 11 are quickly rotated in conjunction with the movement.

The connecting rod 4a is provided outside the rotary driving body 11.
Since the cylindrical members 41a and 41b formed on both sides of the first and fourth members 4b and 4b are integrated with each other,
Since the folding and assembling operations of a and 4b are performed, it is not necessary to separately perform the folding operation in the front-rear direction and the folding operation in the width direction as in the conventional stroller, and the folding operation can be performed extremely easily. There are features.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a stroller is assembled.

FIG. 2 is a perspective view showing a state where a seat section for a seat is removed from FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a side view showing a state in which the skeleton is folded in such a manner as to approach in the front-rear direction.

FIG. 5 is a front view of FIG.

FIG. 6 is a front view showing a state where the connecting rod is approached in the width direction in FIG. 5;

FIG. 7 is an enlarged perspective view of a main part showing a connection state of the folding drive link.

FIG. 8 is an enlarged perspective view showing a locking portion between the cylindrical body and the upper end of the rotary driving body.

FIG. 9 is an enlarged perspective view showing a mounting portion of the folding drive rod.

FIG. 10 is a plan view showing a state in which the connecting rod is folded in the width direction.

FIG. 11 is a plan view in which a part of the opening / closing operation unit is notched.

[Explanation of symbols]

 A stroller 1 front leg rod 2 rear leg rod 3 arm rod 4a connecting rod 4b connecting rod 4c connecting rod 5 push rod 6 lock mechanism for maintaining folding 61 lock receiver 62 lock body 7 opening / closing operation section 71 operating wire 8 opening / closing operation Lock body 9 Folding operation bracket 11 Rotary driving body 12 Fitting plate 42a Fitting groove 41a Cylindrical body 41b Cylindrical body 41c Stopper 13 Guide groove 14 Folding drive rod 14a Drive shaft 14b Drive shaft 2a Elevating guide groove 31 Folding drive link 31 'Folding Drive link

Claims (2)

(57) [Scope of request for utility model registration] 1. A cylindrical front leg rod provided on each of left and right sides.
And the rear legs, and the upper ends of the left and right front legs and rear legs.
A pair of armrest rods to be fixed to the shaft, and the left or right front leg rod or rear leg
Connect the rods in the width direction and fold them at positions that divide the length approximately equally
A connecting rod pivotally attached to the foldable member and an intermediate portion of the rear leg rod;
In a stroller equipped with a push rod raised from the
Vertically drill near the upper and lower ends of the front and rear legs, respectively.
A vertical guide groove provided and an inner space of the front leg rod and the rear leg rod.
Folding drive rod mounted to be able to move up and down inside, and upper end
A folding drive link axially attached to the armrest rod, and a cylinder
Rotatably mounted on the outer periphery of the front leg rod and the rear leg rod
Cylindrical rotary drive with a vertically elongated crank-shaped guide groove
Body, and inserted into the outer periphery of the rotary driving body and together with the rotary driving body
Cylindrical bodies formed at both end portions of each of the rotating connecting rods;
The folding drive link and the folding drive rod
Is attached to the shaft through the lifting guide groove, and
The moving body and the folding drive rod are connected to the lift guide groove and the
Axle mounting through the inner groove and the armrest with folding operation
The folding drive link and
The folding drive rod moves up and down, and the rotary drive body is
The stroller is folded in the width direction by rotating with the body
A stroller folding mechanism characterized by folding. 2. A vertical movement of a rotary driving body attached to the outside of the front leg rod and the rear leg rod and a connecting rod cylinder integrally attached to the outside thereof by a stopper attached to the front leg rod or the rear leg rod. The folding mechanism for a stroller according to claim 1, wherein the folding mechanism is regulated.