HK1139629B - Stroller - Google Patents

Description

Baby carriage

Technical Field

The invention relates to a foldable baby carriage, and aims to provide a baby carriage which has good running stability when unfolded, can reduce the external dimension when folded and is easy to fold.

Background

In a stroller used when taking out a baby outdoors for walking, shopping, or the like, a foldable stroller has been developed in which the stroller is folded from an unfolded state in which the baby can be seated by rotating respective components relative to each other. The folded stroller is compact in outer dimensions in at least one of the front-back direction (traveling direction) and the vertical direction (vertical direction), and is suitable for storage, carrying, and the like. In addition, in the stroller disclosed in japanese patent application laid-open No. 6-37050, the lateral extending component such as the rear stays provided between the pair of rear legs is configured to be bendable, so that the stroller can be folded and the lateral outer dimension can be reduced.

Foldable strollers typically have locking features that limit the rotation between the components. In the stroller disclosed in japanese patent laid-open No. 6-37050, a lock member is provided at a lower portion of a handle. The lock member is engaged with a bracket connecting the handle and the rear leg, thereby restricting the rotation of the handle and the bracket.

By using such a lock member, the rotation between the components can be restricted, and the stroller can be maintained in the unfolded state. In addition, when the stroller is used in the unfolded state, the locking member can also improve the rigidity of the stroller to stabilize the traveling of the stroller. Therefore, in the conventional stroller, 2 locking members are generally provided to engage with the left and right brackets, respectively, so that the unfolded state is maintained more reliably and the stability during traveling is improved.

However, in a stroller that is also foldable in the lateral direction, in order to allow a foldable rear stay that extends in the lateral direction to sufficiently function as a stay when the stroller is unfolded, a stay locking member (rear stay locking member) for restricting the bending of the rear stay when the stroller is unfolded may be provided. When a rear stay lock (stay lock) member is provided, the deployed state can be maintained more reliably, and the stability during traveling can be improved. However, when folding the stroller, in addition to the normal 2 lock members to be engaged with the bracket, the rear pole lock member must also be operated.

That is, when the rear stay locking member is provided, on the one hand, the traveling stability can be improved, and on the other hand, the folding operation becomes complicated. Further, since the rear stay locking member is disposed at a position that is not easily perceived by an operator (user), the operator may forget to release the rear stay locking member when performing the folding operation. In particular, folding the stroller without releasing the rear strut lock member may even result in damage to the stroller.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a stroller which has excellent traveling stability when unfolded, can be reduced in outer size when folded, and can be easily folded.

The present invention provides a foldable stroller, comprising: left and right rear feet; left and right brackets including 1 st coupling portions rotatably coupled to the left and right rear legs, respectively; an operation handle including lower left and right portions rotatably coupled to a 2 nd coupling portion different from the 1 st coupling portion of the left and right brackets, respectively; a bendable rear support rod connected between the left and right rear legs; a lock member provided on at least one of the lower left and right portions of the handle and movable between an engagement position where the lock member is engaged with one of the left and right brackets corresponding to the lower portion to restrict rotation of the handle with respect to the bracket and a release position where the lock member is released from engagement with the bracket; a rear support rod locking member provided on the rear support rod and movable between a restricting position for restricting bending of the rear support rod and a bending position for making the rear support rod bendable; and an interlocking mechanism provided between the lock member and the rear stay lock member, and configured to move the rear stay lock member from the restriction position to the bending position in association with movement of the lock member from the engagement position to the release position.

The stroller of the present invention may further comprise: left and right armrests (arm rest) rotatably coupled to the left and right rear legs, respectively; left and right front legs rotatably coupled to the left and right armrests, respectively; and an X-shaped ring including a 1 st ring member connecting a middle portion of the left front leg and the 2 nd portion of the right bracket or the lower right portion of the handle, and a 2 nd ring member connecting the middle portion of the right front leg and the 2 nd portion of the left bracket or the lower left portion of the handle, wherein the 1 st ring member and the 2 nd ring member may be rotatably connected.

In the stroller of the present invention, the lock member may be provided on the handle so as to be slidable between the engagement position and the release position, and the rear stay lock member may be provided on the rear stay so as to be slidable between the restriction position and the bent position.

In the stroller of the present invention, the lock member may be biased from the release position to the engagement position, and the rear stay lock member may be biased from the bent position to the restriction position.

In addition, the stroller of the present invention may further include a remote operation device including: an operating member provided at an upper portion of the handle above the lower portion; and a transmission member that connects the operation member and the lock member and operates the movement of the lock member from the engagement position to the release position. In such a stroller, the transmission member may also be a wire extending within the tubular handle.

In the stroller of the present invention, the left lower portion of the handle may be provided with a left lock member engageable with the left bracket, the right lower portion of the handle may be provided with a right lock member engageable with the right bracket, and the interlocking mechanism may be provided between either one of the left and right lock members and the rear stay lock member.

In the stroller of the present invention, the handle may have left and right handle members formed of separate bodies, and the left and right handle members may include the left and right lower portions, respectively.

In the stroller of the present invention, the link mechanism may include: a tube having both ends fixed to a lower portion of the handle and the rear stay, respectively; and a wire passing through the inside of the tube and having both ends fixed to the locking member and the rear stay locking member, respectively.

According to the present invention, the rear stay lock member can be moved from the restriction position to the bent position in conjunction with the movement of the lock member from the engagement position to the release position. Therefore, the folding operation can be easily performed, and forgetting to release the rear stay locking member when the stroller is folded can be prevented.

Drawings

Fig. 1 is a perspective view showing a stroller according to an embodiment of the present invention in an unfolded state.

Fig. 2 is a perspective view showing the stroller shown in fig. 1 from the rear in an unfolded state.

Fig. 3 is a side view showing the stroller shown in fig. 1 in a folded state.

Fig. 4 is a rear view showing the stroller shown in fig. 1 in a folded state.

Fig. 5 is a perspective view showing the periphery of the right side bracket of the stroller shown in fig. 1 in a deployed state.

Fig. 6 is a perspective view showing the periphery of the left side bracket of the stroller shown in fig. 1 in the unfolded state.

Fig. 7 is a perspective view showing the periphery of the left side bracket of the stroller shown in fig. 1 in a folded state.

Fig. 8 is a view for explaining a locking member assembled in the stroller shown in fig. 1.

Fig. 9 is a view for explaining a lock member and a rear stay lock member assembled in the stroller shown in fig. 1.

Fig. 10 is a view of the rear stay assembled to the stroller shown in fig. 1, showing the unfolded rear stay together with the rear stay lock member at the restricting position.

Fig. 11 is a view of the rear stay assembled to the stroller shown in fig. 1, and shows the bent rear stay together with the rear stay locking member.

Fig. 12 is a view for explaining a rear pole locking member assembled in the stroller shown in fig. 1.

Detailed Description

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 to 12 are diagrams for explaining an embodiment of the present invention.

In the present specification, the terms "front", "rear", "upper", "lower", "front-rear direction" and "up-down direction" refer to "front", "rear", "upper", "lower", "front-rear direction" and "up-down direction" of the stroller 10 in the unfolded state, unless otherwise specified. Specifically, the "front-rear direction" of the stroller 10 corresponds to the direction of travel of the stroller. Therefore, the "front-rear direction" is a direction connecting the upper left and lower right of the drawing sheet in fig. 1, and the upper left of the drawing sheet in fig. 1 is the front side of the stroller 10. On the other hand, the "up-down direction" of the stroller 10 is a direction perpendicular to the front-rear direction and perpendicular to the ground contact surface. Therefore, when the ground plane is horizontal, "up-down direction" means a vertical direction. The "lateral direction" is a width direction and is a direction orthogonal to both the "front-rear direction" and the "up-down direction".

Fig. 1 to 4 show the overall structure of the stroller 10. First, the overall structure of the stroller will be described. As shown in fig. 1 to 4, the stroller 10 of the present embodiment includes: a pair of right and left front legs 12 for rotatably holding the front wheels 13; a pair of right and left rear legs 16 for rotatably holding the rear wheels 17; a handle 20; and a pair of left and right armrests 26. As shown in fig. 1 to 4, the stroller 10 according to the present embodiment is configured to be substantially symmetrical about a transverse center line in the front-rear direction. In the present embodiment, the stroller 10 further includes other components as described below.

As shown in fig. 1, in the present embodiment, the handle 20 is composed of a pair of handle members 21 disposed on the left and right sides, respectively. That is, the handle 20 for operating the stroller 10 is constituted by the left handle member 21 and the right handle member 21, which are separate bodies. The handle member 21 may be formed of a tube made of, for example, an aluminum alloy. A grip handle 22 is provided at the upper end of each grip member 21. Further, the middle portion 21b of each handle member 21 is rotatably (swingably) connected to the rear end portion of the armrest 26 disposed on the corresponding side (left or right side).

The upper end of the front leg 12 is rotatably (swingably) coupled to the front portion of the armrest 26 disposed on the corresponding side (left or right side). Similarly, the upper end of the rear leg 16 is rotatably (swingably) connected to the front portion of the armrest 26 disposed on the corresponding side (left or right side). However, the joint between the front leg 12 and the armrest 26 is located forward of the joint between the rear leg 16 and the armrest 26 in the front-rear direction, or the same position as the joint between the rear leg 16 and the armrest 26. The armrest 26 may be formed of, for example, resin, and the front leg 12 and the rear leg 16 may be formed of, for example, aluminum alloy pipe.

Moreover, the stroller 10 further includes: a left side connecting member 28 for connecting the left front leg 12 and the left handle member 21; and a right side connecting member 28 connecting the right front leg 12 and the right grip member 21. Each of the side coupling members 28 has a front portion rotatably coupled to the middle portion of the front leg 12 and a rear portion rotatably coupled to the middle portion 21b or the lower portion 21a of the handle member 21. Here, the joint between the side connecting member 28 and the handle member 21 is located below the joint between the armrest 26 and the handle 21 in the vertical direction. Such side coupling members 28 may be formed of a plate material made of, for example, an aluminum alloy.

Moreover, the stroller 10 further includes: a left bracket 30 connecting the left rear leg 16 and the left handle member 21; and a right bracket 30 connecting the right rear leg 16 and the right grip member 21. Each bracket 30 has a 1 st portion 30a rotatably (swingably) coupled to a middle portion or a lower portion of the rear leg 16, and a 2 nd portion 30b different from the 1 st portion 30a rotatably coupled to a lower portion 21a of the handle member 21. In the example shown in the drawings, the joint between the bracket 30 and the handle member 21 is located below the joint between the side connecting member 28 and the handle member 21 in the vertical direction.

Here, fig. 5 shows the periphery of the right bracket 30 of the stroller 10. On the other hand, fig. 6 and 7 show the periphery of the left bracket 30 of the stroller 10. As shown in fig. 5 to 7, in the present embodiment, the bracket 30 has a slightly opened V-shape. The 1 st portion 30a corresponds to one end region of the V shape of the bracket 30, and the 2 nd portion 30b corresponds to a middle region of the V shape of the bracket 30. In fig. 5 to 7, some components are omitted for convenience of explanation.

The pivot axes of the front leg 12, the rear leg 16, and the handle 20 with respect to the armrest 26, the pivot axes of the front leg 12 and the handle 20 with respect to the side coupling member 28, and the pivot axes of the rear leg 16 and the handle 20 with respect to the bracket 30 are all substantially parallel in the lateral direction. As a result, as described below, the stroller 10 can be folded by rotating these components relative to each other, and the outer dimension of the stroller 10 can be reduced in at least one of the front-back direction and the vertical direction.

As shown in fig. 5 to 7, the lock member 60 is provided on the lower portion 21a of the handle member 21, and the stroller 10 can be maintained in the unfolded state by engaging the lock member 60 with the bracket 30. The structure and function of the locking member 60 will be described in detail below.

Next, the components extending in the lateral direction will be described. As shown in fig. 1-4, a transversely extending foot placement member 14 is disposed between the pair of front feet 12. The foot rest member 14 is constructed of a flexible or bendable resilient material.

As shown in fig. 1 to 4, the pair of rear legs 17 are connected to each other by a rear stay 40 extending linearly in the lateral direction when the stroller 10 is in the deployed state. The rear stay 40 includes a 1 st stay member 41 disposed on the left side and a 2 nd stay member 42 disposed on the right side of the 1 st stay member 41. The 1 st and 2 nd strut members 41 and 42 are coupled to each other by a rotation shaft (pivot shaft) 43 such that the ends thereof are rotatable (pivotable). The 1 st leg member 41 is rotatably (swingably) coupled to the middle portion or the lower portion of the left rear leg 16, and the 2 nd leg member 42 is rotatably (swingably) coupled to the middle portion or the lower portion of the right rear leg 16. With this configuration, the rear stay 40 can be bent between the rear legs 16.

The rear stay 40 may be formed of a plate material made of, for example, an aluminum alloy. In the illustrated example, the joint between the rear stay 40 and the rear leg 16 is located above the joint between the bracket 30 and the rear leg 16 and below the joint between the handle member 21 and the bracket 30 in the vertical direction.

As shown in fig. 3 and 4, in the stroller 10 according to the present embodiment, the rear stays 40 are bent and the footrest members 14 are bent, so that the stroller 10 can be folded to reduce the outer size of the stroller 10 in the lateral direction.

As shown in fig. 2 and 4, a rear stay lock member 70 for restricting the bending of the rear stay 40 is provided in the rear stay 40, and the rear stay lock member 70 restricts the bending of the rear stay 40 to restrict the lateral folding. The structure and operation of the rear strut lock member 70 will be described in detail below.

In addition, in order to automatically perform the lateral folding operation in conjunction with the front-rear direction or the vertical folding operation in the stroller 10 according to the present embodiment, as shown in fig. 1 to 4, a lower X-shaped ring 50 and a rear X-shaped ring 55 are further provided.

The lower X-ring 50 has a lower 1 st ring 51a and a lower 2 nd ring 51b rotatably connected to each other. The lower 1 st ring 51a is connected to the lower 2 nd ring 51b at a substantially central point along the longitudinal direction thereof.

The front end of the lower 1 st ring 51a is coupled to the middle portion of the left front leg 12. The lower 1 st ring 51a and the left front leg 12 are rotatable relative to each other about both an axis orthogonal to the longitudinal direction of the lower 1 st ring 51a and an axis orthogonal to the longitudinal direction of the left front leg 12. On the other hand, the rear end of the lower 1 st ring member 51a is connected to the lower portion 21a of the right grip member 21 and the 2 nd portion 30b of the right bracket 30. As shown in fig. 5, a link 35 is attached to the 2 nd portion 30b of the bracket 30 so as to be rotatable about an axis extending in the lateral direction. The rear end of the lower 1 st ring 51a is rotatably (swingably) coupled about an axis orthogonal to the longitudinal direction of the lower 1 st ring 51 a. As a result, the lower 1 st ring member 51a, the right handle member 21, and the right bracket 30 can rotate relative to each other about both the axis orthogonal to the longitudinal direction of the lower 1 st ring member 51a and the axis orthogonal to the longitudinal direction of the right handle member 21.

With the same structure, the front end of the lower 2 nd ring member 51b is connected to the middle portion of the right forefoot 12. The lower 2 nd ring member 51b and the right front leg 12 are rotatable relative to each other about both an axis orthogonal to the longitudinal direction of the lower 2 nd ring member 51b and an axis orthogonal to the longitudinal direction of the right front leg 12. The rear end of the lower 2 nd ring member 51b is coupled to the lower portion 21a of the left handle member 21 and the 2 nd portion 30b of the left bracket 30 via the coupling 35. The lower 2 nd ring member 51b, the left handle member 21, and the left bracket 30 are rotatable relative to each other about both an axis line orthogonal to the longitudinal direction of the lower 2 nd ring member 51b and an axis line orthogonal to the longitudinal direction of the left handle member 21.

On the other hand, the rear X-shaped ring 55 has substantially the same structure as the lower X-shaped ring 50, although the attachment position is different. That is, the rear X-shaped ring 55 has a rear 1 st ring member 56a and a lower 2 nd ring member 56b rotatably connected to each other. The rear 1 st ring member 56a is connected to the longitudinal center point of the rear 2 nd ring member 56b at the longitudinal center point.

The upper end of the rear 1 st ring member 56a is coupled to the upper portion 21c of the left handle member 21 by the coupling member 23. The rear 1 st ring member 56a and the left handle member 21 are rotatable relative to each other about both an axis line orthogonal to the longitudinal direction of the rear 1 st ring member 56a and an axis line orthogonal to the longitudinal direction of the left handle member 21. In addition, the link 23 is slidably mounted on the left handle member 21 so as to be movable in the longitudinal direction of the left handle member 21. The lower end of the rear 1 st ring member 56a is coupled to the lower portion 21a of the right handle member 21 and the 2 nd portion 30b of the right bracket 30 by the coupling member 35. The rear 1 st ring member 56a, the right handle member 21, and the right bracket 30 are rotatable relative to each other about both an axis perpendicular to the longitudinal direction of the rear 2 nd ring member 56a and an axis perpendicular to the longitudinal direction of the right handle member 21.

Similarly, the front end of the rear 2 nd ring member 56b is coupled to the upper portion 21c of the right handle member 21 by a coupling member 23 slidably attached to the right handle member 21. The rear 2 nd ring member 56b and the right handle member 21 are rotatable relative to each other about both an axis orthogonal to the longitudinal direction of the rear 2 nd ring member 56b and an axis orthogonal to the longitudinal direction of the right handle member 21. The rear end of the rear 2 nd ring member 56b is coupled to the lower portion 21a of the left handle member 21 and the 2 nd portion 30b of the left bracket 30 by the coupling member 35. The rear 2 nd ring member 56b, the left handle member 21, and the left bracket 30 are rotatable relative to each other about both an axis orthogonal to the longitudinal direction of the rear 2 nd ring member 56b and an axis orthogonal to the longitudinal direction of the left handle member 21.

However, as shown in fig. 1, in the present embodiment, the left and right handle members 21 and the side connecting members 28 of the stroller 10 also function as seat supporting members that support the base 58. That is, the base 58 is attached to the left and right handle members 21 and the left and right side connecting members 28 and is opened. On the base 58, a rider can sit on the seat via a cushion material (a seat cushion or the like), not shown. As shown in fig. 1, the left and right handle members 21 also function as a roof support member that detachably supports the roof 59.

Next, the operation of the stroller 10 having the above-described overall structure when folded will be described.

First, the left and right handle members 21 of the operating handle 20 are respectively pivoted with respect to the corresponding brackets 30, and the left and right brackets 30 are respectively pivoted with respect to the corresponding rear legs 16. As a specific operation, the left and right handle members 21 are pulled up rearward and upward in a state where the below-described engagement between the lock member 60 and the bracket 30 is released. Then, after the handle member 21 is pulled up, the handle member 21 is pushed downward until the rotational axes of the handle member 21 and the armrest 26, the rotational axes of the handle member 21 and the bracket 30, and the rotational axes of the bracket 30 and the rear leg 16 are arranged substantially on a straight line in a side view.

By this operation, the armrest 26 and the side coupling member 28 coupled to the handle member 21 are swung upward (clockwise in a side view viewed from the left side) with respect to the handle member 21. At the same time, the front leg 12 coupled to the armrest 26 and the side coupling member 28 is rotated relative to the armrest 26 and the side coupling member 28, and approaches the handle member 21. Then, as shown in fig. 3, the handle member 21 is disposed close to and substantially parallel to the front leg 12 in a side view, and the disposed position of the handle member 21 is lowered. Thus, the stroller 10 can be folded, and the outer dimensions of the stroller 10 in both the front-rear direction and the up-down direction can be reduced.

However, as shown in fig. 3, when the stroller 10 is folded in the front-rear direction and the up-down direction, the distance between the front end and the rear end of the lower X-shaped ring 50 is longer in side view than in the unfolded state. That is, the lower 1 st ring 51a and the lower 2 nd ring 51b of the lower X-shaped ring 50 are rotated in directions in which the front ends thereof are close to each other and the rear ends thereof are close to each other in accordance with the folding operation in the front-rear direction and the up-down direction. As a result, as shown in fig. 4, the lateral distances between the left and right front legs 12, between the left and right rear legs 16, and between the left and right handle members 21 are shortened. At this time, as shown in fig. 4, the rear stay 40 is bent to allow the left and right rear legs 16 to approach each other, and the foot placement member 14 is bent to allow the left and right front legs 12 to approach each other.

Further, the rear 1 st ring member 56a and the rear 2 nd ring member 56b of the rear X-shaped ring 56 are rotated in directions in which the front ends and the rear ends thereof approach each other. Thereby, the upper portions 21c and the lower portions 21a of the left and right grip members 21 are similarly brought close to each other. The link 23 slides upward relative to the handle member 21 in accordance with the rotation of the rear X-shaped ring 56 so as not to hinder the rotation of the rear X-shaped ring 56.

Accordingly, the stroller 10 is automatically folded in the lateral direction in conjunction with the folding in the front-rear direction and the up-down direction, and the outer dimension of the stroller 10 in the lateral direction is reduced. As shown in fig. 4, in the present embodiment, an inverted auxiliary member 52 is fixed to the 1 st ring member 51a of the lower X-shaped ring 50. The inverted auxiliary member 52 serves as a fulcrum together with the left and right rear wheels, so that the folded stroller 10 can be inverted to the ground surface.

On the other hand, when the stroller 10 is unfolded from the folded state, the operation opposite to the folding operation described above may be performed. That is, the handle member 21 of the operating handle 20 is pulled up and then pushed downward. By such an operation, the respective components operate in the reverse direction to the folding operation, and the stroller 10 is unfolded from the folded state.

However, in the stroller 10 of the present embodiment, the left-right lock member 60 is provided at the lower left-right portion 21a of the operating handle 20. The left and right lock members 60 engage with the corresponding bracket 30 to restrict the rotation of the operation handle 20 with respect to the bracket 30. The rear stay 40 is provided with a rear stay lock member 70, and the bending of the rear stay 70 is restricted by the rear stay lock member 70. In addition, when the stroller 10 is folded, the engagement between the lock member 60 and the bracket 30 must be released and the restriction of the rear stay lock member 70 must be released before the operation is started. The lock member 60 and the rear stay lock member 70 will be described in detail below.

First, the lock member 60 will be explained. In the present embodiment, the left and right lock members 60 are slidably attached to the handle member 21 on the side corresponding to the operation handle 20. That is, the lock member 60 is movable along the longitudinal direction of the handle member 21 between an engagement position where it engages with the bracket 30 and a release position where it releases the engagement with the bracket 30, as described below.

First, a supporting method of the locking member 60 will be described mainly with reference to fig. 8 and 9. As shown in fig. 8 and 9, in the present embodiment, each grip member 21 of the operation grip 20 includes a tube material 23 and a stopper 24 inserted and fixed to a lower end of the tube material 23. As shown in fig. 1, the grip handle 22 is attached to the upper end of the tube 23.

As shown in fig. 9, the portion of the stopper 24 inserted into the tube 23 is formed with a hollow portion 24a extending in the longitudinal direction of the handle member 21. In the hollow portion 24a, a guide member 66 movable in the longitudinal direction of the handle member 21 and a compression spring 68 provided above the guide member 65 and pressing the guide member downward are provided. That is, the guide member 66 is biased downward in the hollow portion 24. A fixing pin 69 extending in the lateral direction is fixed to the guide member 66. The fixing pin 69 is fixed to the lock member 60 through an elongated hole 23a (a two-dot chain line in fig. 9) formed in the tube 23. Thereby, the lock member 60 is slidably supported on the lower portion 21a of the handle member 21 while being biased downward.

In the present embodiment, the stroller 10 further includes a remote operation device 80 that operates the movement (sliding) of the lock member 60. The remote operation device 80 includes: an operating lever (operating member) 81 provided at an upper portion 21c of the handle member 21 of the operating handle 20; and a metal thin (transmission member) 82 connecting the operation rod 81 and the guide member 66. The operating lever 81 is supported by the handle member 21 so as to be slidable in the longitudinal direction of the handle member 21. When the operating lever 82 is pulled up, the movement of the operating lever 82 is transmitted to the guide member 66 via the wire 82, and the guide member 66 moves upward in the handle member 21 against the urging force of the compression spring 68. The lock member 60 moves upward as the guide member 66 moves. In particular, the operating lever 81 is disposed in the upper portion 21c of the operating grip 20, i.e., in the vicinity of the grip handle 22. Therefore, the operability of the lock member 60 can be made excellent.

The remote operation device 80 is provided independently of each of the left and right lock members 60. Therefore, the left and right locking members 60 can be operated separately.

Next, a method of engaging the locking member 60 with the bracket 30 will be described. As shown in fig. 5 to 7, the lock member 60 has an engaging projection 61 projecting toward the bracket 30 side in the lateral direction. On the other hand, as shown in fig. 6 and 7, the bracket 30 is formed with a 1 st engaging recess 31a and a 2 nd engaging recess 31b that can engage with the engaging projection 61. Here, fig. 6 shows the periphery of the left bracket 30 of the stroller 10 in the unfolded state, and fig. 7 shows the periphery of the left bracket 30 of the stroller 10 in the folded state.

As shown in fig. 6, when the stroller 10 is in the deployed state, the engaging projection 61 of the lock member 60 disposed at a position (hereinafter, also referred to as an engaging position) below the handle member 21 is engaged with the 1 st recess 31a of the bracket 30. After the engaging projection 61 of the lock member 60 engages with the 1 st recess 31a of the bracket, the relative movement (relative rotation) between the operation handle 20 and the bracket 30 is restricted. This can maintain the stroller 10 in the deployed state and improve the running stability in the deployed state.

However, as described above, the lock member 60 is slidable with respect to the handle member 21. Then, when the lock member 60 moves to an upper position (hereinafter, also referred to as a release position) above the engagement position of the handle member 21, the engagement projection 61 of the lock member 60 is pulled out from the 1 st recess 31a of the bracket 30. That is, by disposing the lock member 60 at the release position, the engagement between the engagement projection 61 of the lock member 60 and the 1 st recess 31a of the bracket can be released. At this time, the operation handle 20 can be rotated with respect to the bracket 30, and thus the folding operation of the stroller 10 can be performed.

On the other hand, as shown in fig. 7, when the stroller 10 is folded, the engaging projection 61 of the lock member 60 located at the engaging position engages with the 2 nd recess 31b of the bracket 30. After the engaging projection 61 of the lock member 60 engages with the 2 nd recess 31b of the bracket, the relative movement (relative rotation) between the operation handle 20 and the bracket 30 is restricted. This allows the stroller 10 to be maintained in the folded state. In addition, when the lock member 60 is moved to the release position from this state, the operation handle 20 can be rotated with respect to the bracket 30, and the stroller 10 can be unfolded.

As shown in fig. 6 and 7, a guide portion 31c that abuts against the engaging projection 61 is formed between the 1 st recess portion 31a and the 2 nd recess portion 31b of the bracket 30. As described above, the locking member 60 is biased downward from the release position to the engagement position by the compression spring 68. Therefore, the engaging projection 61 of the locking member 60 is pushed toward the guide portion 31c of the bracket 30 during the folding operation and during the unfolding operation. Then, the guide projection 61 moves from the 1 st concave portion 31a into the 2 nd concave portion 31b or moves into the 2 nd concave portion 31b and the 1 st concave portion 31a while being guided by the guide portion 31 c. Thus, when the folding operation is completed and the unfolding operation is completed, the engaging projection 61 of the lock member 60 automatically engages with the 1 st concave portion 31a or the 2 nd concave portion 31b, and the stroller 10 is maintained in the folded state or the unfolded state.

Next, the rear stay locking member 70 will be explained. As shown in fig. 10 and 11, in the present embodiment, the rear stay locking member 70 is attached to the 1 st stay member 41 of the rear stay 40. The rear stay locking member 70 includes: a cylindrical locking member main body 71 surrounding the 1 st leg member 41; and a locking pin 72 fixed to the lock member body 71 and penetrating the 1 st leg member 41. The locking pin 72 passes through the inside of the elongated hole 41a formed in the 1 st leg member 41. Further, the locking member main body 71 is not fixed to the 1 st leg member 41. Further, the rear stay locking member 70 is slidable relative to the 1 st stay member 41 in the longitudinal direction of the 1 st stay member 41 by only the length of the long hole 41a in the longitudinal direction of the 1 st stay member 41.

As shown in fig. 10 and 11, the 2 nd strut member 42 has a notch 42a formed in the 1 st strut member 41 side end portion. As shown in fig. 10, when the rear stay 40 is not bent, and the rear stay locking member 70 moves to the 2 nd stay member 42 side, the locking pin 72 of the rear stay locking member 70 is fitted into the notch 42a of the 2 nd stay member 42. At this time, the relative rotation (oscillation) between the 1 st and 2 nd strut members 41 and the rear strut 40 is restricted, and the state is maintained in which the rear strut is not bent. By limiting the bending of the rear stay 40 in this manner, the rigidity of the stroller 10 can be improved and the running stability can be improved.

On the other hand, when the rear stay locking member 70 moves to the side away from the 2 nd stay member 42, the locking pin 72 of the rear stay locking member 70 is pulled out from the notch 42a of the 2 nd stay member 42. At this time, the 1 st and 2 nd strut members 41 and 42 can rotate relative to each other, and the rear strut 40 can be bent.

As shown in fig. 10 and 11, the 1 st leg member 41 is provided with a support projection 41 b. The compression spring 44 is disposed between the support projection 41b and the locking pin 72 of the rear stay locking member 70. Therefore, the rear stay lock member 70 is urged from the bending position where the rear stay 40 can be bent to the restricting position where the bending of the rear stay 40 is restricted. When the stroller 10 is unfolded from the folded state, the rear stay 40 extends in the lateral direction, and the locking pin 72 of the rear stay locking member 70 is automatically positioned in the notch 42a of the 2 nd stay member 42. That is, when the stroller 10 is unfolded from the folded state, the rear stay locking member 70 automatically restricts the bending of the rear stay.

In addition, when the stroller 10 is unfolded from the folded state, the rear stay lock member 70 biased to the restricting position needs to be moved to the folded position. The stroller 10 of the present embodiment further includes an interlocking mechanism 85, and the interlocking mechanism 85 moves the rear stay lock member 70 from the restricting position to the folding position in conjunction with the movement from the engagement position to the release position of the left lock member 10 at the start of the folding operation.

As can be seen from fig. 1, 9, and 12, for example, in the present embodiment, the interlocking mechanism 85 is provided between the lock member 60 provided on the left handle member 21 and the rear stay lock member 70. Specifically, the link mechanism 85 includes a tube 86 and a wire 87 disposed in the tube 86 and movable relative to the tube 86.

As shown in fig. 9, one end portion of the tube 86 is fixed to the lower portion 21a (specifically, the stopper 24) of the left handle member 21. The tube 86 is pulled out from the stopper 24, extends toward the rear stay 40, and the other end of the tube 86 is fixed to the rear surface side of the 1 st stay member 41 of the rear stay 40 (the front surface side of the stroller 10 in the deployed state), as shown in fig. 12. On the other hand, one end of a wire 87 extending inside the tube 86 is fixed to the guide member 66 slidably disposed inside the left handle member 21. That is, one end of the wire 87 is fixed to the locking member 60 by the guide member 66 (refer to fig. 9). The other end of the wire 87 is fixed to the lock member main body 71 of the rear stay lock member 70 (see fig. 12).

Therefore, when the guide member 66 is raised and the lock member 60 is moved from the engagement position to the release position, the wire 87 is pulled out to one end portion side (lock member side) of the tube 86. With such movement of the wire 87, the rear stay locking member 70 moves from the restricting position to the bent position. When the guide member 66 is lowered and the lock member 60 moves from the release position to the engagement position, the wire 87 is pushed out to the other end portion side (rear rod side) of the tube 86. With such movement of the wire 87, the rear stay locking member 70 moves from the bent position to the restricting position. That is, when the remote operation device 80 is operated to move the left side lock member 60 from the engagement position to the release position when the stroller 10 is folded, the rear stay lock member 70 automatically moves from the restriction position to the bent position. Therefore, the folding of the stroller 10 can be started only by operating the remote operation device 80.

As described above, the compression spring 44 biases the rear stay lock member 70 in the restricting position direction, and the compression spring 68 biases the lock member 60 in the engaging position direction. Therefore, when the operator releases the operating lever 81, the wire 87 is automatically pulled out to the other end portion side (rear lever side) of the tube 86.

As described above, in the stroller 10 according to the present embodiment, the handle 20 is rotated with respect to the bracket 30, so that the stroller can be folded in at least one of the front-rear direction and the vertical direction, and the rear stay 40 is bent so that the stroller can be folded in the lateral direction. That is, according to the present embodiment, the stroller 10 can be folded, and the outer dimensions of the stroller 10 in the lateral direction as well as the vertical direction and the front-rear direction can be reduced. Since the stroller 10 can be folded to be very small in this way, it is very convenient to store and carry the stroller.

On the other hand, in addition to the lock member 60, the lock member 60 is provided to restrict the rotation of the bracket 30 with respect to the operation handle 20 used by the operator when operating the stroller 10, and a rear stay lock member 70 is provided to restrict the bending of the rear stay 40. Therefore, when the stroller 10 is unfolded for use, the components necessary for folding the stroller 10 to be small can be sufficiently fixed to each other. Therefore, the stroller 10 has good driving stability.

When the lock member 60 is operated to fold the stroller 10, the rear stay lock member 70 automatically slides from the restricting position to the folded position in conjunction with the operation of the lock member 60. Therefore, the folding operation of the stroller 10 can be extremely simplified. Further, forgetting to operate the rear stay lock member 70, which is not easily visible to the operator, can be reliably prevented. Therefore, damage to the stroller 10 and the like due to forgetting to operate the rear stay locking member 70 can be avoided.

In addition, the above embodiment can be modified in various ways within the scope of the gist of the present invention.

For example, although the above embodiment shows an example in which the operation knob 20 is constituted by the pair of knob members 21 which are constituted by separate bodies, the present invention is not limited to this, and an operation knob which is constituted by a U-shape may be employed. In the case of a U-shaped handle, the left and right lock members 60 may be operated by one operation member.

In the above embodiment, the example in which the rear stay locking member 70 is interlocked with the operation of the locking member 60 disposed on the left side has been described, but the present invention is not limited thereto, and the rear stay locking member 70 may be interlocked with the operation of the locking member 60 disposed on the right side.

In the above embodiment, the lock member 60 is operated by the remote operation device 80, but the present invention is not limited to this, and the operator may directly hold the lock member 60 and operate it.

Claims (7)

1. A stroller, which is a collapsible stroller, comprising:

left and right rear feet;

left and right brackets including 1 st coupling portions rotatably coupled to the left and right rear legs, respectively;

an operation handle including left and right lower portions rotatably coupled to 2 nd coupling portions different from the 1 st coupling portions of the left and right brackets, respectively;

a bendable rear support rod connected between the left and right rear legs;

a lock member provided on at least one of the left and right lower portions of the handle and movable between an engagement position where the lock member is engaged with one of the left and right brackets corresponding to the lower portion to restrict rotation of the handle with respect to the bracket and a release position where the lock member is released from engagement with the bracket;

a rear stay locking member provided to the rear stay and movable between a restriction position restricting bending of the rear stay and a bending position allowing the rear stay to be bent; and

and an interlocking mechanism provided between the lock member and the rear stay lock member, and configured to move the rear stay lock member from the restriction position to the bending position in conjunction with movement of the lock member from the engagement position to the release position.

2. The stroller of claim 1, further comprising:

left and right armrests rotatably coupled to the left and right rear legs, respectively;

left and right front legs rotatably coupled to the left and right armrests, respectively; and

an X-shaped ring, the X-shaped ring comprising: a 1 st ring member that links a middle portion of the left front foot and the 2 nd linking portion of the right bracket or the lower right portion of the handle; and a 2 nd ring member that couples a middle portion of the right forefoot and the 2 nd coupling portion of the left bracket or the lower left portion of the handle,

the 1 st ring material and the 2 nd ring material are rotatably connected.

3. The stroller of claim 1,

the lock member is slidably provided to the handle between the engagement position and the release position,

the rear strut locking member is slidably disposed on the rear strut between the limit position and the bent position.

4. The stroller of claim 1,

the lock member is biased from the release position to the engagement position, and the rear stay lock member is biased from the bent position to the restriction position.

5. The stroller of claim 1, further comprising a remote operator,

the remote operation device includes an operation member provided at an upper portion above the lower portion of the handle; and a transmission member that connects the operation member and the lock member, wherein the remote operation device operates the movement of the lock member from the engagement position to the release position.

6. The stroller of claim 1,

a left locking member engageable with the left bracket is provided at the left lower portion of the handle, and a right locking member engageable with the right bracket is provided at the right lower portion of the handle,

the link mechanism is provided between either one of the left and right lock members and the rear stay lock member.

7. The stroller of claim 1,

the link mechanism has:

a tube having both ends fixed to a lower portion of the handle and the rear stay, respectively; and

and a wire passing through the inside of the tube and having both ends fixed to the locking member and the rear stay locking member, respectively.