JP2012136223A - Stroller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stroller for allowing only front side wheels in the advancing direction to rotate around the vertical line axis, even in eithe case of a back face hand-push state and an opposed face hand-push state.SOLUTION: Vertically slidable lock members 47a and 47b are provided at side parts of caster holders fixed to lower parts of front legs 12 and rear legs 14 respectively; recessed parts 45a and 45b to which the lock members are selectively engaged when front wheels 11 or rear wheels 13 turn to a caster shafts in the straightly advancing direction, are provided; lead wires 50a and 50b of which both end parts are connected to the front leg side and rear leg side lock members respectively, and are inserted into the front leg and the rear leg, are provided; the above lead wires inserted into the front leg and the rear leg are connected to a lock switching operation member 54 slidably installed on the front leg and a connecting tool 51 vertically movable with the lock switching operation member 54 in the front leg; and the front wheel side lock member 47a or rear wheel side lock member 47b is selectively engaged with the recessed part 45a or 45b arranged on the corresponding caster shaft by sliding the lock switching operation member 54.

Description

TECHNICAL FIELD OF THE INVENTION

  The present invention relates to a baby stroller, and more particularly to a baby stroller that enables switching of the handle on the opposite side and the rear side.

Problems to be solved by the prior art and the invention

  In general, in baby strollers used when taking infants outdoors for walks, shopping, etc., the rear is folded as necessary to facilitate storage and carrying, and the rear surface is pushed from the infant's back. Various types of face-to-face state where the user is in a state of pressing or in a hand-held state where the user has faced an infant have been proposed and put into practical use.

  However, in a baby stroller, the front wheel is generally rotatable around the vertical axis to improve its driving operability. If the user is in a face-to-face pressed state where the user faces the infant from the state, the wheel on the rear side in the traveling direction can rotate about the vertical axis, and the steering performance may be impaired, There is a problem such as not running smoothly. Therefore, it is conceivable that both the front wheel and the rear wheel can be rotated around the vertical axis, but there is a problem that it is difficult for the stroller to travel straight.

  In view of these points, the present invention is to obtain a stroller in which only the wheel on the front side in the traveling direction can rotate about the vertical axis in both the back-handed state and the face-by-side pushed state. Objective.

A first stroller according to the present invention comprises:
In a stroller with a U-shaped barb that can be swung back and forth so that the barb can be used in a face-to-face or back-side state,
A caster holder fixed to the lower part of the front leg and the rear leg, and provided with a lock member that can slide up and down on the side part;
A caster shaft provided with a recess for selectively engaging the lock member when a front wheel or a rear wheel is directed in a straight traveling direction;
Both ends are connected to the front leg side and rear leg side lock members, respectively, and lead wires inserted into the front legs and rear legs,
A lock switching operation member slidably mounted on the front leg;
It is possible to move up and down together with the lock switching operation member in the front leg, and a connecting tool to which a lead wire inserted into the front leg and the rear leg is connected,
By sliding the lock switching operation member, the front wheel side or the rear wheel side lock member is selectively engaged with a recess provided on a corresponding caster shaft,
The caster shaft that supports the front wheel is provided below the caster holder, and is slidable in the vertical direction with respect to the caster holder.
On the caster shaft that supports the front wheel, a position fixing pin is provided so as to freely advance and retract,
A recessed groove that engages with the position fixing pin when the caster shaft slides downward with respect to the caster holder in the caster holder that engages with the caster shaft that supports the front wheel. Is provided,
The stroller characterized in that rotation of the caster shaft with respect to the caster holder is restricted by the engagement between the position fixing pin and the concave groove.
In the first stroller according to the present invention, the lead wire inserted into the front leg and the rear leg is connected by a connecting tool, and the lead wire inserted into the front leg is connected between the connecting tool and the front leg. A spring that urges the lock member on the front leg side upward may be provided.
The second stroller according to the present invention is:
In a stroller with a U-shaped barb that can be swung back and forth so that the barb can be used in a face-to-face or back-side state,
A caster holder fixed to the lower part of the front leg and the rear leg, and provided with a lock member that can slide up and down on the side part;
A caster shaft provided with a recess for selectively engaging the lock member when a front wheel or a rear wheel is directed in a straight traveling direction;
Lead wires inserted through the front and rear legs;
A lock switching operation member slidably mounted on the front leg;
It is possible to move up and down together with the lock switching operation member in the front leg, and a connecting tool to which a lead wire inserted into the front leg and the rear leg is connected,
The lead wire extends between the locking member on the front leg side and the coupling tool, and between the locking member on the rear leg side and the coupling tool,
By sliding the lock switching operation member, the front wheel side or the rear wheel side lock member is selectively engaged with a recess provided on a corresponding caster shaft,
The caster shaft that supports the front wheel is provided below the caster holder, and is slidable in the vertical direction with respect to the caster holder.
On the caster shaft that supports the front wheel, a position fixing pin is provided so as to freely advance and retract,
A recessed groove that engages with the position fixing pin when the caster shaft slides downward with respect to the caster holder in the caster holder that engages with the caster shaft that supports the front wheel. Is provided,
The stroller characterized in that rotation of the caster shaft with respect to the caster holder is restricted by the engagement between the position fixing pin and the concave groove.
In the first or second stroller according to the present invention, the lock switching operation member is provided with a projecting piece that is pressed by the hand pushing rod when the hand pushing rod is swung forward and slides the lock switching operation member downward. It may be done.
In the first or second stroller according to the present invention, the push bar has a protrusion that contacts the protrusion of the lock switching operation member, and the protrusion is at a position where the protrusion is provided. It may protrude from the hand barb in a direction intersecting the longitudinal direction of the barb.
In the first or second stroller according to the present invention, the lock member is incorporated in a side portion of the caster holder when sliding upward, and a lower portion of the caster holder when sliding downward. The lock member may protrude downward from the caster shaft and engage with a recess of a caster shaft provided below the caster holder so that the lock member does not protrude laterally from the periphery of the caster holder.
In the first or second stroller according to the present invention, when the caster shaft slides downward with respect to the caster holder, the engagement between the lock member of the caster holder and the recess of the caster shaft is released. You may be made to do.
In the first or second stroller according to the present invention, the caster shaft that supports the rear wheel is configured to be restricted from rotating with respect to the caster holder when the push bar swings backward. Also good.
A third stroller according to the present invention is a stroller fitted with a U-shaped push bar so that it can be swung back and forth, and can be used in a face-to-face state or a back-side state. A caster holder provided with a lock member capable of sliding up and down on its side, and a recess for selectively engaging the lock member when the front wheel or the rear wheel is directed straightly. Both ends of the caster shaft are connected to the front leg and rear leg lock members, lead wires inserted into the front legs and rear legs, a lock switching operation member slidably attached to the front legs, and the front legs The lock switching operation member is movable up and down, and has a connecting tool to which a lead wire inserted into the front leg and the rear leg is connected. The sliding of the work member, characterized by being adapted to engage the front wheel side or recess provided in the caster axis to selectively corresponding locking member on the rear wheel side.

  In the third stroller according to the present invention, the lock switching operation member is provided with a projecting piece that is pressed by the hand pushing rod when the hand pushing rod is swung forward and slides the lock switching operation member downward. Also good.

  In the third stroller according to the present invention, the lead wires inserted into the front legs and the rear legs are connected by a connecting tool, and the lead wires inserted into the front legs are connected between the connecting tool and the front legs. A spring that biases the lock member on the front leg side upward may be provided.

  Since the present invention is configured as described below, by moving the lock switching operation member slidably mounted on the front leg upward or downward, the lead wire is inserted through the front leg and the rear leg. The locking member provided on the side part of the front leg or the rear leg can be selectively engaged with the concave part provided on the caster shaft, and the traveling direction when the baby stroller is in the back-hand pushing state or the face-to-face pushing state. Only the wheel on the front side can be rotated about the vertical axis, and the steering performance when the stroller runs can be maintained in a good state at all times, and a smooth running can be performed. In addition, since the lead wire inserted into the front leg and the rear leg is connected to the connecting tool disposed in the front leg, and the connecting tool is moved by the lock switching operation member, the lead wire and the lock switching operation member are used. The connecting portion is located in the front leg, and the lock switching device is only slidably attached to the front leg, so that the appearance is good and the operation error is small.

The perspective view which shows schematic structure of the stroller of this invention. The side view of the said stroller. The enlarged side view of the connection part of a pipe and a rear leg. The fragmentary perspective view which shows the structure of the latching member and lock release member part of a hand barb. FIG. The side view of the stroller which swung the handbag to the facing state. It is an expanded sectional view of the caster holder part of a front wheel and a rear wheel, (a) is a front wheel part and (b) is a figure showing a rear wheel part. It is sectional drawing of a lock switching operation member part, Comprising: (a) is a time of back pushing state, (b) is a figure which shows the time of face-to-face pushing. (A), (b) is a figure which shows the lock | rock or lock release state of a front-wheel part and a rear-wheel part at the time of facing pressing. Sectional drawing of the caster holder part which shows other embodiment of this invention. Operation | movement explanatory drawing of what is shown in FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a schematic configuration of the stroller of the present invention, and FIG. 2 is a side view thereof, a pair of left and right front legs 12 having a front wheel 11, a pair of left and right rear legs 14 having a rear wheel 13, and a substantially U-shape. And a pair of left and right armrests 16 and two left and right pipes 17 extending in parallel to each other, each of which is pivotally attached to one end of each armrest 16.

  A front leg 12 is pivotally attached to the other end of each armrest 16, and an arc-shaped bendable guard arm 18 is detachably suspended between the distal ends of the left and right armrests 16. In addition, the upper ends of the rear legs 14 are pivotally attached to the left and right armrests 16. The left and right front legs 12 are connected by a front connection bar 20 having a footrest plate 19, and the left and right rear legs 14 are connected by a rear connection bar 21. Further, the front end of the connecting bar 22 is pivotally attached to the middle portion of each front leg 12, and the rear end of the connecting bar 22 is pivotally attached to a rear leg support member 23 fixed to the lower portion of the pipe 17. . The left and right connecting bars 22 are connected by an upper connecting bar 24. The front leg 12, the rear leg 14, the armrest 16, the pipe 17, and the connecting bars 20, 21, 22, and 24 that connect them constitute a stroller body.

  As shown particularly enlarged in FIG. 3, a lower end portion of an L-shaped bracket 25 is pivotally attached to the rear leg 14, and an intermediate portion thereof is pivotally attached to the rear leg support member 23. A notch step portion 25 a that engages with a locking step portion 26 a of a lock member 26 that locks the rear leg 14 to the pipe 17 is provided at the free end portion of the bracket 25. The lock member 26 is slidably mounted on the pipe 17 and can be slid up and down along the pipe 17 by a remote control device provided on a hand barb. Further, the rear leg support member 23 is formed with a step portion 23a on the surface facing the rear leg 14 so as to abut against the rear leg 14 at the time of deployment and maintain the deployed state.

  As shown in FIG. 3, when the lock member 26 is engaged with the notch step portion 25a of the L-shaped bracket 25, the rear leg 14 and the pipe 17 are locked via the bracket 25, and the stroller body Is kept in a usable deployment state. On the other hand, when the lock member 26 is pulled up as shown by the alternate long and short dash line by the remote control device provided on the hand barb, the lock by the lock member 26 is released, and the armrest 16, the front leg 12 (not shown), and the rear leg 14 are moved. As indicated by the alternate long and short dash line, it can swing upward and can be folded in two for convenience of carrying and the like.

  By the way, as shown in FIG. 1, the rear leg support members 23 fixed to the lower portions of the left and right pipes 17 each have a lower end portion of a U-shaped push bar 15 on the outer surface thereof, It is pivotally attached to the rocker. Further, locking projections 28 and 29 projecting laterally are fixed to the outer surface of the armrest 16 at the front end portion and the rear end portion thereof. On the other hand, a locking member 30 that engages with the locking projection 28 or 29 is slidably mounted on the hand bar 15 (FIGS. 4 and 5). Is biased downward via a spring.

  On the other hand, as shown in FIG. 5, the locking member 30 has an L-shaped locking member having an open portion 31 a that extends in the vertical direction on the surface facing the pipe 17 and opens rearward at the lower end. A first recess 31 is provided, and a second locking recess 32 that extends in the vertical direction and opens forward and downward is provided below the first recess 31.

  Thus, when the locking member 30 is pulled upward by the remote control device provided on the hand bar and the hand bar 15 is swung rearward, as shown in FIG. 5, the first recess 31 is opened rearward. The locking projection 29 is inserted into the first recess 31 through the portion 31 a, and the locking projection 29 is engaged with the first recess 31 by the downward movement of the locking member 30. As a result, as shown in FIG. 2, the hand bar 15 is fixed in the backward swinging position, that is, in the back pushing state. On the other hand, as shown by the chain line in FIG. 5, when the locking member 30 is pulled upward and the hand bar 15 is swung forward, the second locking recess 32 engages with the locking projection 28, and As shown in FIG. 6, the push bar 15 is fixed to the forward swing position, that is, the face-to-face pressed state by the downward movement of the stop member 30.

  As shown in FIG. 4, a lock release member 33 operated by a remote control device is slidably mounted on the hand pusher 15 along the hand pusher 15 below the locking member 30. The lock release member 33 is urged downward by a spring 34 provided in the hand push rod 15, and an unlock release rod 35 projects from the outer surface. On the other hand, an operating plate 36 protruding above the unlocking rod 35 protrudes from the lock member 26, and when the unlocking rod 35 is pulled upward together with the unlocking member 33, the locking member is interposed via the operating plate 36. 26 is pulled upward, the bracket 25 is unlocked, and the stroller can be folded as described above.

  FIGS. 7A and 7B are enlarged views of the front wheel portion and the rear wheel portion of the stroller according to the present invention. Caster holders 40a and 40b are fixed to lower ends of the front leg 12 and the rear leg 14 of the stroller, respectively. The caster holders 40a and 40b are formed with bent vertical portions in the lower half of the caster holders 40a and 40b. The vertical portions of the caster holders 40a and 40b have columnar cavities 41a with lower end surfaces open. 41b is formed. In the voids 41a and 41b, caster shafts 43a and 43b projecting from the caster bodies 42a and 42b pivotally supporting the front wheels 11 or 13 by the horizontal shafts 11a and 13a on one side are provided on the caster holders 40a and 40b. It is mounted so that it can rotate around its axis. Step portions 44a and 44b are formed at the lower portions of the caster shafts 43a and 43b of the caster main bodies 42a and 42b. The step portions 44a and 44b are in contact with the lower end edges of the caster holders 40a and 40b. Concave portions 45a and 45b are formed in which a locking member, which will be described later, is engaged when the rear wheel 13 is directed in the straight traveling direction.

  On the other hand, lock member accommodating portions 46a, 46b extending in the vertical direction are formed on the opposite side surfaces of the front wheel side caster holder 40a and the rear wheel side caster holder 40b, and the lock member accommodating portions 46a, 46b The lock members 47a and 47b are slidable up and down. The lock members 47a and 47b are biased downward by springs 48a and 48b, respectively.

  One end of each of the lead wires 50a and 50b is connected to the lock members 47a and 47b, respectively. The lead wire 50a connected to the lock member 47a on the front wheel side is inserted into the front leg 12. Similarly, the lead wire 50b connected to the rear wheel side locking member 46b is inserted into the rear leg 13, and the other end of the lead wire 50b passes through the armrest 16 as shown in FIG. It is inserted into the front leg 12 and is connected to the lead wire 50a on the front wheel side within the front leg 12 by a connector 51 (FIG. 8).

  FIGS. 8A and 8B are enlarged sectional views showing details of the connecting portion between the lead wire 50a and the lead wire 50b, and the end portions of the lead wire 50a and the lead wire 50b are mounted in the front leg 12. FIG. The connecting tool 51 is slidably disposed along the front leg 12. That is, as shown in FIG. 8A, a connector guide member 53 disposed in the front leg 12 is mounted on a pivot 52 that pivotally attaches the top end of the front leg 12 to the armrest 16, and the connection In the long groove 53a formed in the tool guide member 53, the connecting tool 51 is slidable along the long groove 53a. Further, a lock switching operation member 54 is slidably fitted to the front leg 12, and the coupling tool 51 and the lock switching operation member 54 are connected by a shaft 55 inserted through the long groove 12 a of the front leg 12. . The connector 51 is urged upward by a spring 56 provided between the connector 51 and the connector guide member 53. The lock switching operation member 54 is integrally provided with a protruding piece 54a projecting outward, and when the hand bar 15 is swung forward, a protrusion 57 (see FIG. 8) provided on the hand bar 15 is provided. (B) is in contact with the projecting piece 54 a, and the connector 51 is moved downward against the spring 56 via the lock switching operation member 54.

  Thus, when the hand bar 15 is tilted rearward as shown in FIG. 2 and is in the rear hand pressed state, as shown in FIG. 7A, the lock member 47a is pulled upward by the spring 56 via the lead wire 50a. Then, the lock of the caster body 42a in the front wheel 11 is released. Therefore, the rotation of the front wheel 11 around the vertical axis is free. On the other hand, at this time, the lock member 47b on the rear wheel 13 side is moved downward by the spring 48b and engaged with the recess 45b of the caster shaft 43b of the caster body 42b on the rear wheel side. Therefore, the caster main body 42b of the rear wheel 13 is locked, and the rotation of the rear wheel 13 around the vertical axis is prevented. In this way, only the front wheel 11 can turn in the case of pushing the back, and the stroller can be steered freely.

  Further, when the hand barb 15 is swung forward as shown in FIG. 6 to be in a face-to-face pressing state, the protrusion 57 provided on the handbarb 15 abuts on the protrusion 54a of the lock switching operation member 54 and locks. The switching operation member 54 is pressed downward. Therefore, the lock member 48a is pressed downward by the spring 48a, the lock member 47a engages with the recess 45a of the caster body 42a as shown in FIG. 9A, and the caster body 42a is locked. On the other hand, at this time, the lock member 47b on the rear wheel 13 side is pulled upward by the lead wire 50b, and the lock with the recess 54b is released as shown in FIG. 9B. Therefore, the caster body 42b of the rear wheel 13 on the front side in the traveling direction can be rotated around the vertical axis, and the caster body 42a of the front wheel 11 on the rear side in the traveling direction is locked.

  In this manner, only the front wheels in the advancing direction can turn in either the back-pressing or face-to-face pressing state, and the turning of the rear-side wheels is locked. The steering property can be improved in any of the pushed states.

  FIG. 10 is a view showing a modified example of the present invention. A caster holder 40a fixed to the lower end portion of the front leg 12 is formed with a cylindrical space 60 having an open lower end surface. Inside, a caster shaft 43 a that pivotally supports the front wheel 11 by a horizontal shaft 11 a is mounted on one side so as to be rotatable about its axis and slidable along the inner surface of the space 60.

  A concave portion 61 extending in the circumferential direction is provided on the outer surface of the upper portion of the caster shaft 43a, and a regulating pin 62 extending in the horizontal direction provided in the caster holder 40a is inserted into the concave portion 61, and The sliding range in the vertical direction of the caster shaft 43a is restricted by the engagement between the lower step portion and the restriction pin 62. The caster shaft 43a is provided with a front wheel straight-running state position fixing pin 63 capable of moving forward and backward in the radial direction of the caster shaft 43a, and is attached so as to protrude outward by a spring 64 attached in the caster shaft 43a. It is energized.

  On the other hand, the front wheel position fixing pin 63 engages with the lower inner surface of the space 60 of the caster holder 40a when the caster shaft 43a is in the lower position together with the front wheel 11 and the front wheel 11 is directed straightly. A concave groove 65 is provided. The concave groove 65 extends in the axial direction, and an upper end portion of the concave groove 65 is inclined toward the inner surface side of the space 60 of the caster holder 40a.

  Thus, since the front wheel 11 is grounded when the stroller is used, the front leg 12 moves downward, that is, the caster shaft 43a is positioned at an upper position relative to the caster holder 40a. Therefore, as shown in FIG. 10, the front wheel position fixing pin 63 is in contact with the inner surface of the space 60 and is rotatable along the inner surface.

  On the other hand, when the front wheel 11 is lifted upward by a hand-claw when the stroller is folded, the front wheel 11 is lowered together with the caster shaft 43a with respect to the caster holder 40a by its own weight. Therefore, when the front wheel 11 swings in this state and moves in the straight direction, as shown in FIG. 11, the front wheel straight movement state position fixing pin 63 protrudes by the spring 64 and engages with the groove 65, and the front wheel 11 moves straight. It is fixed in the direction facing the direction. For this reason, when the stroller is folded, it is possible to prevent the front wheels supported by the caster shaft 43a from being forcibly folded in a state where the stroller is not in the straight traveling position.

11 front wheel 12 front leg 13 rear wheel 14 rear leg 15 push bar 16 armrest 17 pipe 20 front connection bar 21 rear connection bar 22 connection bar 23 rear leg support member 24 upper connection bar 25 bracket 26 lock members 28 and 29 locking projections 30 Locking member 31 1st recessed part 32 2nd recessed part 33 Unlocking member 40a, 40b Caster holder 42a, 42b Caster main body 45a, 45b Recessed part 47a, 47b Lead member 51 Connecting tool 54 Lock switching operation member 63 Front wheel position fixing pin 64 Spring 65 Concave groove

Claims (8)

In a stroller with a U-shaped barb that can be swung back and forth so that the barb can be used in a face-to-face or back-side state,
A caster holder fixed to the lower part of the front leg and the rear leg, and provided with a lock member that can slide up and down on the side part;
A caster shaft provided with a recess for selectively engaging the lock member when a front wheel or a rear wheel is directed in a straight traveling direction;
Both ends are connected to the front leg side and rear leg side lock members, respectively, and lead wires inserted into the front legs and rear legs,
A lock switching operation member slidably mounted on the front leg;
It is possible to move up and down together with the lock switching operation member in the front leg, and a connecting tool to which a lead wire inserted into the front leg and the rear leg is connected,
By sliding the lock switching operation member, the front wheel side or the rear wheel side lock member is selectively engaged with a recess provided on a corresponding caster shaft,
The caster shaft that supports the front wheel is provided below the caster holder, and is slidable in the vertical direction with respect to the caster holder.
On the caster shaft that supports the front wheel, a position fixing pin is provided so as to freely advance and retract,
A recessed groove that engages with the position fixing pin when the caster shaft slides downward with respect to the caster holder in the caster holder that engages with the caster shaft that supports the front wheel. Is provided,
The stroller characterized in that rotation of the caster shaft with respect to the caster holder is restricted by the engagement between the position fixing pin and the concave groove.   The lead wires inserted into the front legs and the rear legs are connected by a coupling tool, and a locking member on the front leg side is attached upward between the coupling tool and the front legs via the lead wires inserted into the front legs. The stroller according to claim 1, wherein a spring is provided. In a stroller with a U-shaped barb that can be swung back and forth so that the barb can be used in a face-to-face or back-side state,
A caster holder fixed to the lower part of the front leg and the rear leg, and provided with a lock member that can slide up and down on the side part;
A caster shaft provided with a recess for selectively engaging the lock member when a front wheel or a rear wheel is directed in a straight traveling direction;
Lead wires inserted through the front and rear legs;
A lock switching operation member slidably mounted on the front leg;
It is possible to move up and down together with the lock switching operation member in the front leg, and a connecting tool to which a lead wire inserted into the front leg and the rear leg is connected,
The lead wire extends between the locking member on the front leg side and the coupling tool, and between the locking member on the rear leg side and the coupling tool,
By sliding the lock switching operation member, the front wheel side or the rear wheel side lock member is selectively engaged with a recess provided on a corresponding caster shaft,
The caster shaft that supports the front wheel is provided below the caster holder, and is slidable in the vertical direction with respect to the caster holder.
On the caster shaft that supports the front wheel, a position fixing pin is provided so as to freely advance and retract,
A recessed groove that engages with the position fixing pin when the caster shaft slides downward with respect to the caster holder in the caster holder that engages with the caster shaft that supports the front wheel. Is provided,
The stroller characterized in that rotation of the caster shaft with respect to the caster holder is restricted by the engagement between the position fixing pin and the concave groove.   The lock switching operation member is provided with a projecting piece that is pressed by the push bar when the hand bar is swung forward, and slides the lock switching operation member downward. The stroller according to any one of 1 to 3. The hand barb has a protrusion abutting against the protrusion of the lock switching operation member,
5. The stroller according to claim 4, wherein the protrusion protrudes from the hand bar toward a direction intersecting a longitudinal direction of the hand bar at a position where the protrusion is provided. . The locking member is incorporated in a side portion of the caster holder when sliding upward, and protrudes downward from a lower portion of the caster holder when sliding downward, and is provided below the caster holder. Engaged with the recessed portion of the caster shaft,
The stroller according to any one of claims 1 to 5, wherein the lock member does not protrude laterally from the periphery of the caster holder.   The engagement between the lock member of the caster holder and the recess of the caster shaft is released when the caster shaft slides downward with respect to the caster holder. The stroller according to any one of 6 above.   The caster shaft that supports the rear wheel is restricted from rotating with respect to the caster holder when the hand barb swings backward. The stroller as described in the item.

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