JP2013095407A - Braking mechanism for stroller, wheel holding mechanism for stroller, and stroller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a braking mechanism for stably regulating rotation of a wheel.SOLUTION: The braking mechanism 40 has a body member 60, a sliding member 80 held at a first holding position or a second holding position, and a rocking member 100 engaged with the wheel 45 to regulate the rotation of the wheel. The rocking member includes a first engaging pawl 110 to be engaged with an operation piece 88 of the sliding member slid toward the first holding position, and a second engaging pawl 115 to be engaged with an operation piece slid toward the second holding position. When the sliding member is held at the second holding position, the second engaging pawl is arranged at a position laterally shifted from a moving route ra of the operation piece, and can be brought into contact with the operation piece from a direction crossing one direction.

Description

  The present invention relates to a braking mechanism for regulating the rotation of a wheel of a stroller, and more particularly to a braking mechanism for a stroller that can stably maintain a state in which the rotation of a wheel is regulated. The present invention also relates to a wheel holding mechanism and a stroller having a braking mechanism capable of stably maintaining a state in which wheel rotation is restricted.

  A wheel holding mechanism (wheel holding device) that rotatably holds the wheel is provided at the lower end of the leg of the stroller. The wheel holding mechanism for a stroller usually has a braking mechanism for restricting the rotation of the wheel for the purpose of restricting unintended travel or movement of the stroller.

  Typically, the braking mechanism disclosed in Patent Document 1 is exemplified. The braking mechanism disclosed in Patent Document 1 includes a large number of protrusions (ribs 33) extending radially about the rotation axis of a wheel, and brake pins (engaging members 31) held movably in a predetermined direction. ) And. The brake pin is held by an operation member (wheel engagement device 20) that is swingably attached to a wheel carrier (wheel attachment member 28) that holds the wheel. Then, by rotating the operation member, it is possible to switch between restriction and release of the rotation of the wheel.

Japanese Patent Laid-Open No. 2005-14894

  However, in the actual use of a stroller, for example, the road surface on which the stroller is placed is inclined with respect to the wheel of the stroller whose rotation is restricted. It often happens that force works. This large force is applied to the engagement portion between the brake pin and the protrusion, and as a result, the operation member that holds the brake pin may operate so that the engagement between the brake pin and the protrusion is released. There is also.

  The present invention has been made in consideration of such points, and an object thereof is to provide a braking mechanism for a stroller that can stably maintain a state in which the rotation of the wheel is restricted. Another object of the present invention is to provide a wheel holding mechanism that can stably maintain a state in which the rotation of the wheel is restricted. Furthermore, it aims at providing the stroller which can maintain stably the state which controlled rotation of the wheel.

The braking mechanism according to the present invention comprises:
A braking mechanism for restricting the rotation of the stroller wheel,
A body member;
A slide that is slidable in one direction with respect to the main body member, and is held in one of a first holding position and a second holding position on one side in the one direction with respect to the first holding position. A moving member;
A swinging member attached to the main body member so as to be swingable,
The sliding member has an operation piece that can be engaged with the swing member,
The swing member includes a first engagement claw that can be engaged with the operation piece of the sliding member that slides from the second holding position toward the first holding position, and the first holding position from the first holding position. A second engaging claw capable of engaging with the operating piece of the sliding member that slides toward the second holding position;
The swinging member is separated from the wheel when the sliding member is held at the first holding position by the engagement between the first engaging claw and the second engaging claw and the operation piece. And when the sliding member is held at the second holding position, it is arranged at a second position that restricts the rotation of the wheel.
When the sliding member is held at the second holding position, the second engaging claw of the swinging member located at the second position is moved from the movement path along the one direction of the operation piece. The second position of the oscillating member toward the first position when the second engagement claw is disposed at a position shifted laterally and the second engagement claw contacts the operation piece from a direction intersecting the one direction. Swinging from is controlled.

  In the braking mechanism according to the present invention, the second engagement claw of the swing member is a position facing the operation piece of the sliding member when the sliding member is held at the first holding position. And a second surface disposed at a position facing the operation piece of the sliding member from a side when the sliding member is held at the second holding position. When the sliding member is held at the second holding position, the second surface of the second engaging claw abuts on the operation piece from a direction intersecting the one direction. The swinging member from the second position toward the first position may be restricted. In such a braking mechanism, the moving path of the second surface when the swinging member swings crosses the moving path of the operation piece when the sliding member slides, and the second holding position. The operating piece of the sliding member held by the sliding member may be positioned on a moving path of the second surface when the swinging member swings. In such a braking mechanism, the second surface may extend parallel to the one direction when the sliding member is held at the second holding position.

  In the braking mechanism according to the present invention, the first engagement claw of the swing member has a contact surface that comes into contact with the operation piece of the sliding member from the other side in one direction, and the sliding member is When held at the first holding position, the operation piece of the sliding member is located in a recess between the first engagement claw and the second engagement claw of the swing member. Also good.

  In the braking mechanism according to the present invention, a head that extends so as to cover at least a part of the first engagement claw and at least a part of the second engagement claw is formed on the operation piece of the sliding member. Good.

  In the braking mechanism according to the present invention, the swing of the swing member with respect to the main body member is regulated between the first position and the second position by contact between the swing member and the main body member. It may be.

  The braking mechanism according to the present invention further includes a biasing member supported by the main body member and biasing the sliding member against the main body member from the one side toward the other side along the one direction. The sliding member is returned and held by the urging force of the urging member each time it is pressed from the other side toward the one side along the one direction. May be configured to alternately change between the first holding position and the second holding position.

  In the braking mechanism according to the present invention, the swing member may be swingable about a direction intersecting with the one direction, particularly a direction orthogonal to the one direction. In the braking mechanism according to the present invention, the sliding member may be provided in the main body member, and the operation piece may extend in a direction intersecting the one direction and protrude from the main body member. In the braking mechanism according to the present invention, the rocking member has a pair of plate-like portions disposed on both sides of the main body member along the rocking axis with respect to the main body member. One engaging claw and the second engaging claw are formed, the sliding member is provided in the main body member, and the sliding member is in a direction parallel to the swing axis of the swing member. You may have a pair of operation piece extended to both sides along. In the braking mechanism according to the present invention, a cover that covers the operation piece may be provided on the main body member so as to extend along a movement path of the operation piece of the sliding member.

  The braking mechanism according to the present invention is an operation member operably attached to the main body member, and the sliding member is slid with respect to the main body member by operating with respect to the main body member. An operation member that can be used may be further provided.

The wheel holding mechanism for a stroller according to the present invention is:
A wheel holding mechanism attached to the leg of the stroller,
One of the braking mechanisms according to the present invention described above, an axle held by the main body member of the braking mechanism, and a wheel attached to the axle.

  The wheel holding mechanism for the stroller according to the present invention further includes a caster member provided between the leg and the main body member, and connecting the leg and the main body member, and the caster member is fixed to the leg. You may make it have the fixed part made, and the turning part connected with the said fixing part so that rotation was possible, and was fixed with the said main body member.

  In the wheel holding mechanism for a stroller according to the present invention, the axle may extend through both the turning portion of the caster member and the main body member.

The stroller according to the present invention comprises:
A stroller body with front legs and rear legs;
A wheel holding mechanism attached to at least one of the front leg and the rear leg,
The wheel holding mechanism is one of the braking mechanisms according to the present invention described above.

  According to the present invention, it is possible to stably maintain a state in which the rotation of the stroller wheel is restricted.

FIG. 1 is a diagram for explaining an embodiment of the present invention, and is a perspective view showing a stroller and a wheel holding mechanism for a stroller. FIG. 2 is a side view showing the stroller of FIG. FIG. 3 is a side view showing the wheel holding mechanism and the braking mechanism. FIG. 4 is a perspective view showing the braking mechanism. FIG. 5 is a side view showing the braking mechanism in a state where the wheels can be rotated. FIG. 6 is a side view showing the braking mechanism in a state where the rotation of the wheel is restricted. FIG. 7 is a side view showing the braking mechanism in a state different from FIGS. 5 and 6. FIG. 8 is an exploded side view showing the internal structure of the braking mechanism. FIG. 9 is a view showing the braking mechanism from the direction of arrow A in FIG. FIG. 10 is a view corresponding to FIG. 9 and showing a state in which the sliding member is located at a position different from the state of FIG. FIG. 11 is a diagram corresponding to FIGS. 9 and 10 and showing a state in which the sliding member is located at a position different from the states of FIGS. 9 and 10. 12 is a view showing a state in which the sliding member is removed from the braking mechanism of FIG. FIG. 13 is a perspective view showing a swing member of the braking mechanism.

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

  FIGS. 1-13 is a figure for demonstrating one Embodiment of the stroller by the present invention, a wheel holding mechanism (wheel holding device), and a braking mechanism (braking device). Of these, FIG. 1 shows the overall configuration of the stroller. A stroller 10 shown in FIG. 1 includes a stroller body 11 having a frame portion 15 having a pair of front legs 22 and a pair of rear legs 24, and a hand handle 13 that is swingably connected to the frame portion 15. ing. A wheel holding mechanism 30 that rotatably holds the front wheel 35 is provided at the lower end of each front leg 22 of the stroller body 11, and a wheel that rotatably holds the rear wheel 45 at the lower end of each rear leg 24. A holding mechanism 40 is provided. The wheel holding mechanism 30 for the front wheel 35 rotatably holds the front wheel 35 via an axle. As shown in FIG. 3, the wheel holding mechanism 30 for the rear wheel 45 rotatably holds the rear wheel 45 via an axle 49.

  The wheel holding mechanism 40 for the rear wheel 45 has a braking mechanism 50 that can switch between a state in which the wheel 45 can be rotated and a state in which the rotation of the wheel 45 is restricted. By restricting the rotation of the rear wheel 45 by the braking mechanism 50, the movement of the stroller 10 can be restricted and kept in a stopped state. The wheel holding mechanism 40 for the rear wheel 45 will be described in detail later.

  In the stroller 10 according to the present embodiment, the handle 13 is swung with respect to the frame portion 15 so that an operator (guardian) holds the handle 13 from the back side of the infant and operates the stroller 10. The stroller 10 is caused to travel so as to face forward in the direction of travel (the state shown in FIG. 1 and the state shown by the two-dot chain line in FIG. 2), and the handle 13 from the position on the front leg side where the operator faces the infant The baby stroller 10 is operated by gripping the baby stroller 10 so that the rear leg side of the baby stroller 10 is in the forward direction (the state shown by the solid line in FIG. 2). That is, the handle 13 is configured to be releasably fixed at a facing pressing position indicated by a solid line in FIG. 2 and a back pressing position indicated by a two-dot chain line in FIG.

  As shown in FIG. 1, the wheel holding mechanisms 30 and 40 attached to the front legs 22 and the rear legs 24 are configured as casters, and only hold the wheels 35 and 45 so as to be rotatable about the rotation axis La. Instead, the wheel 45 and the shaft member (axle) holding the wheel 45 can be turned around the turning axis Lb extending so as to intersect the rotation axis La. Each of the wheel holding mechanisms 30 and 40 includes a lock mechanism (not shown) for restricting the turning of the wheels 35 and 45 around the turning axis Lb.

  The restriction and release of the turning of the wheels 35 and 45 by the lock mechanism are performed in conjunction with the position of the handle 13 as disclosed in JP2008-254688A, JP2008-254688A, JP2010-234988A, and the like. It may be. Specifically, with respect to the wheel holding mechanisms 30 and 40 attached to the front legs 22 and the rear legs 24 located in front of the movement direction, the wheels 35 and 45 can be turned around the turning axis Lb. Thus, for the wheel holding mechanisms 30 and 40 attached to the legs positioned rearward in the movement direction, the rotation of the wheels 35 and 45 around the turning axis Lb may be restricted. According to such an aspect, when the operator (guardian) grips the handle 13 from the back side of the infant and steers the stroller 10, the handle 13 is moved from the position on the front leg side where the operator faces the infant. In any of the cases where the stroller 10 is gripped and operated, the stroller 10 can be smoothly turned during traveling.

  Note that a configuration that allows the handle 13 to swing with respect to the frame portion 15 and a lock mechanism that restricts the rotation of the wheels 35 and 45 around the turning axis Lb are known configurations, for example, JP2008- The configurations disclosed in 254688A, JP2008-254688A, JP2010-234988A, and the like can be employed. Therefore, further detailed description is omitted in this specification.

  In the present embodiment, the stroller 10 is configured to be foldable as disclosed in JP 2008-254688A, for example, so as to be widely used. As a specific example, the stroller 10 can be configured as follows.

  The stroller body 11 (stroller 10) generally has a generally symmetric configuration around a lateral center plane along the front-rear direction. As shown in FIG. 1, the frame portion 15 in the present embodiment includes a pair of front legs 22 arranged on the left and right sides, a pair of rear legs 24 arranged on the left and right sides, and a pair of left and right sides, respectively. It has an armrest 28 and a pair of connecting members 26 arranged on the left and right respectively. The upper end portion of the front leg 22 is connected to an armrest 28 disposed on the corresponding side (left side or right side) so as to be rotatable (swingable). Similarly, the upper end of the rear leg 24 is connected to an armrest 28 disposed on the corresponding side (left side or right side) so as to be rotatable (swingable). Further, the upper part of the connecting member 26 is connected to the rear part of the armrest 28 arranged on the corresponding side (left side or right side) so as to be rotatable (swingable).

  The frame portion 15 further includes a left side member 18 that connects the left front leg 22 and the left connecting member 26, and a right side member 18 that connects the right front leg 22 and the right connecting member 26. Each side member 18 has a front portion thereof rotatably connected to an intermediate portion of the front leg 22 and a rear portion thereof rotatably connected to a lower portion of the connecting member 26. The frame portion 15 further includes a left bracket 16 that connects the left rear leg 24 and the left connecting member 26, and a right bracket 16 that connects the right rear leg 24 and the right connecting member 26. . Each bracket 16 is pivotally connected to a middle portion of the rear leg 24 at a part thereof, and is pivotally connected to a lower part of the connecting member 26 at the other part.

  The handle 13 is slidably connected to the frame portion 15 having such a configuration. The handle 13 is connected to the bracket 16 on the corresponding side at both ends of the U-shape so as to be rotatable (swingable). The rotation axis (swing center) of the handle 13 with respect to the bracket 16 coincides with the rotation axis of the bracket 16 and the connecting member 26 and the rotation axis of the connecting member 26 and the side member 18. . Further, the handle 13 in the back pushing position is rotatably connected to the armrest 28 or the connecting member 26.

  Further, as a member extending in the lateral direction (width direction) of the stroller 10, a footrest 17 that connects between the pair of front legs 22 and a rear connection member 19 that connects between the pair of wheel holding mechanisms 40 are provided. Yes.

  The stroller 10 having the overall configuration as described above can be folded by rotating the constituent members with respect to each other. Specifically, the handle 16 disposed at the back pushing position is once lifted rearward and upward, and then lowered downward to rotate the bracket 16 clockwise with respect to the rear leg 24 in FIG. With this operation, the armrest 28 and the side member 18 are rotated clockwise in FIG. 2 with respect to the connecting member 26. By such an operation, the handle 13 and the front leg 22 approach each other and are arranged substantially parallel in a side view, and the arrangement position of the handle 13 is lowered. As described above, the stroller 10 can be folded, and the size of the stroller along the front-rear direction and the vertical direction can be reduced. On the other hand, in order to unfold the stroller 10 from the folded state, a procedure reverse to the above-described folding operation may be performed.

  In the present specification, the terms “front”, “rear”, “upper” and “lower” with respect to the baby stroller are based on “infant riding in the baby stroller 10 in the unfolded state” unless otherwise specified. It means “front”, “rear”, “upper” and “lower”. Therefore, the “front-rear direction” of the stroller 10 corresponds to a direction connecting the lower left and upper right of the paper surface in FIG. Unless otherwise specified, “front” refers to the side on which the infant who rides faces, and the lower left side in FIG. 1 is the front side of the stroller 10. On the other hand, the “vertical direction” of the stroller 10 is a direction orthogonal to the front-rear direction and orthogonal to the ground contact surface of the stroller 10. Therefore, when the grounding surface of the stroller 10 is a horizontal plane, the “up and down direction” indicates a vertical direction. The “lateral direction” is the width direction, and is a direction orthogonal to both the “front-rear direction” and the “up-down direction”.

  Next, the wheel holding mechanism 40 provided at the lower end of the rear leg 24 will be described with reference mainly to FIGS. A wheel holding mechanism 40 is provided at each of the lower ends of the pair of rear legs 24. The two wheel holding mechanisms 40 for the rear wheels are configured identically. As described above, the wheel holding mechanism (wheel holding device) 40 has a wheel (rear wheel) 45 that is rotatably held, and includes a braking mechanism 50 that restricts the rotation of the wheel 45. is there. Specifically, the configuration is as follows.

  As shown in FIG. 3, the wheel holding mechanism (wheel holding device) 40 holds the wheel 45 in a turnable and rotatable manner as already described. Specifically, the wheel holding mechanism 40 is disposed between the braking mechanism 50, the axle 49 held by the braking mechanism 50, the wheel 45 attached to the axle 49, and the rear leg 24 and the braking mechanism 50. The caster member 41 is provided.

  The caster member 41 includes a fixed portion 42 fixed to the rear leg 24, and a swing portion 43 that is pivotably connected to the fixed portion 40 and fixed to the braking member 50. The turning portion 43 is in a direction intersecting with the rotation axis La of the wheel 45 defined by the axle 49, typically around a direction (turning axis Lb) orthogonal to the rotation axis La with respect to the fixed portion 42. It can be rotated. And the rotation part 43 rotates with respect to the fixing | fixed part 42, and the wheel 45 can turn centering on the turning axis Lb.

  The turning part 43 has a housing part 44 that opens downward. A connecting portion 62 of the main body member 60 of the braking mechanism 50, which will be described in detail later, is inserted into the housing portion 44a from below. An axle opening 62a through which the axle 49 passes is formed in the connecting portion 62 of the main body member 60 of the braking mechanism 50, and the axle opening 62a of the connecting portion 62 inserted into the accommodating portion 44a is also formed in the turning portion 43. A through hole 44b is formed at a position facing the. The axle 49 extends through the axle opening 62 a of the main body member 60 and the through hole 44 b of the turning portion 43. Thus, since the axle 49 extends through both the turning portion 43 of the caster member 41 and the main body member 60 of the braking mechanism 50, the turning portion 43 of the caster member 41 and the braking mechanism are utilized using the axle 49. 50 can be maintained in a more stable and fixed state.

  As described above, the caster member 41 is provided with a lock mechanism for restricting the rotation of the turning portion 43 relative to the fixed portion 42. Other configurations of the caster member including this lock mechanism may employ known configurations, for example, the configuration disclosed in JP2008-254688A. Therefore, in this specification, the further detailed description regarding the caster member 41 is abbreviate | omitted.

  Next, the braking mechanism 50 will be described. As shown in FIGS. 3 to 5, the braking mechanism 50 includes a main body member 60, a sliding member 80 that can slide in one direction with respect to the main body member 60, and swingable to the main body member 60. And an attached rocking member 100. The sliding member 80 is held at either the first holding position shown in FIGS. 4 and 5 or the second holding position shown in FIG. 6 with respect to the main body member 60. Yes. In the present embodiment, the sliding member 80 is held by the main body member 60 and is slidable in the vertical direction with respect to the main body member 60, and the second holding position is slid from the first holding position. It is shifted to one side (lower side) along the sliding direction ds of the member 80.

  As shown in FIGS. 5 and 6, the sliding member 80 has an operation piece 88 that can be engaged with the swinging member 100. The swing member 100 includes a first engagement claw 110 that can be engaged with the operation piece 88 of the sliding member 80 that slides from the second holding position toward the first holding position, and the second holding position from the first holding position. It has the 2nd engaging claw 115 which can be engaged with the operation piece 88 of the sliding member 80 which slides toward a position. When the sliding member 60 is held at the first holding position by the engagement between the first engaging claw 110 and the second engaging claw 115 and the operation piece 88 of the sliding member 60, the swing member 100 is It is arranged at the first position and is arranged at the second position when the sliding member 60 is held at the second holding position.

  As shown in FIGS. 3 and 5, the wheel 45 has a plurality (five in the illustrated example) of ridges 46 extending radially around the rotation axis La, and the swing member 100 is A brake pin 101 that can engage with the protrusion 46 is provided. When the rocking member 100 is disposed in the first arrangement (regulation release position), the brake pin 101 is separated from the protrusion 46 and the wheel 45 can be rotated. On the other hand, when the swinging member 100 is arranged in the second arrangement (release position), the brake pin 101 is arranged between the ridges 46 as shown in FIG. That is, when the sliding member 80 is held at the second holding position, the rotation of the rear wheel 45 is restricted and the movement of the stroller 10 is restricted.

  The illustrated braking mechanism 50 further includes an urging member 52 supported by the main body member 60. The biasing member 52 applies the sliding member 80 to the main body member 60 from one side (lower side) to the other side (upper side) along the sliding direction (one direction) ds of the sliding member 80. Rush. Then, each time the sliding member 80 is pressed from the upper side to the lower side along the sliding direction ds, there is a position where the sliding member 80 is returned and held by the urging force of the urging member 52. The first holding position shown in FIG. 5 and the second holding position shown in FIG. 6 are alternately changed. As an example, the urging member is composed of an elastic member such as a spring or rubber.

  The illustrated braking mechanism 50 includes an operation member 55 that is operatively attached to the main body member 60. By operating the operation member 55 with respect to the main body member 60, the sliding member 80 can be slid with respect to the main body member 60. The operation member 55 is swingably attached to the main body member 60 as an operation lever. The operation member 55 is swingably attached to the main body member 60 via an attachment pin 56. The operation member 55 is connected to the sliding member 80 via the connection pin 57. A hole 55a through which the connection pin 57 provided in the operation member 55 passes is a long hole. For this reason, the swinging motion of the operation member 55 relative to the main body member 60 is smoothly converted into the sliding motion of the sliding member 80 relative to the main body member 60 in one direction ds.

  Hereinafter, these components will be further described in detail in the order of the main body member 60, the sliding member 80, and the swinging member 100.

  The main body member 60 is formed of a first part 61 and a second part 77. In FIG. 8, the second component 77 is indicated by a two-dot chain line. 9 to 11 show the first part 61 of the main body member 60 from which the second part 77 has been removed together with the sliding member 80. FIG. The second part 77 functions as a cover for forming an accommodation space for accommodating the sliding member 80 together with the first part 61.

  The housing space is configured such that the sliding member 80 housed therein can move only in one direction (sliding direction) ds. The accommodation space is opened upward, and as shown in FIGS. 3 to 8, the sliding member 80 accommodated in the accommodation space of the main body member 60 extends upward from the main body member 60. As shown in FIGS. 5 to 7, a hole 79 through which the operation piece 88 of the sliding member 80 can pass is formed in a portion that forms the accommodation space of the main body member 80. The hole 79 extends in one direction ds corresponding to the operation piece 88 of the sliding member 80 sliding in one direction ds. In the example described here, the slidable range along the one direction ds of the sliding member 80 is defined by the operation piece 88 coming into contact with one end and the other end of the hole 79.

  The first component 61 functions as a body component that supports the second component 77, and includes the connecting portion 62 that is connected to the caster member 41, a bottom portion 63 that supports the second component 77 from below, and an upper portion from the bottom portion 63 And an upright portion 65 extending to the top. The connecting part 62, the bottom part 63, and the standing part 65 are integrally formed to constitute the first component 61. The connecting portion 62 is formed with a through hole 62a through which the axle 49 passes. A pair of wheels 45 are attached to both sides of the axle 49 that penetrates the through hole 62a so as to sandwich the main body member 60 therebetween. Further, a through hole 66 a through which the attachment pin 56 for attaching the operation member 55 passes is formed above the standing portion 65. Further, a through hole 66b through which a mounting pin 58 for swingably mounting the swinging member 100 to the main body member 60 is formed in the standing portion 65 and the second component 77 of the first component 61. The through hole 66a through which the attachment pin 56 for attaching the operation member 55 passes is formed such that the swing axis Lc of the operation member 55 is parallel to the rotation axis La of the wheel 45. Similarly, the through-hole 66b through which the attachment pin 58 for attaching the swing member 100 is formed is such that the swing axis Ld of the swing member 100 is parallel to the rotation axis La of the wheel 45.

  The upright portion 65 is engaged with the sliding member 80 as a surface that faces the sliding member 80, in other words, as a surface for forming an accommodation space for accommodating the sliding member 80, An engagement surface 68 is provided for holding the sliding sliding member 80 in the first holding position or the second holding position. As shown in FIG. 12, the engagement surface 68 has a first raised portion 70 and a second raised portion 69 located below the first raised portion 70. In the observation from the direction orthogonal to both the sliding direction ds of the sliding member 60 and the rotation axis La of the wheel 45, the first raised portion 70 is formed with the first to third corner portions 70a to 70c and one It has a flat shape with four concave fourth corner portions 70d and is raised. The configuration of the engagement surface 68 is for holding the sliding member 80 in the first holding position or the second holding position by engagement with the sliding member 80. The configuration will be described later.

  Next, the sliding member 80 will be described in detail. The sliding member 80 includes a slider 81 that is slidably supported by the main body member 60, and an engagement component 91 that is supported by the slider 81. The slider 81 has the operation piece 88 described above that engages with the swing member 100. As shown in FIGS. 9 to 11, the operation piece 88 is in a direction crossing the sliding direction ds, preferably in a direction orthogonal to the sliding direction ds, and more preferably parallel to the rotation axis La of the wheel 45. The main body member 60 protrudes in the direction. In the illustrated example, the sliding member 80 has a pair of operation pieces 88 that protrude toward both sides along a direction parallel to the rotation axis La.

  A plate-like head 87 is provided at the tip of each operation piece 88 located outside the main body member 60. Although omitted in the drawings other than FIGS. 3 and 4, the second component 77 of the main body member 60 is provided with a cover 78 for covering the operation piece 88 and the head 87. The cover 78 extends over at least a part of the moving path of the operation piece 88 of the sliding member 80. By providing such a cover 78, it is possible to prevent, for example, external clothing or the like from being entangled with the operation piece 88 and the head 87 that are exposed and moved from the main body member 60. The stable sliding of the part 87 can be ensured.

  As shown in FIG. 8, the slider 81 is configured as an elongated member extending in the sliding direction. A through hole 80 a through which the connection pin 57 for connecting to the operation member 55 passes is formed in the upper part of the slider 81. Further, a cross hole 85 extending in a direction orthogonal to both the sliding direction ds of the sliding member 80 and the rotation axis La of the wheel 45 is formed in the slider 81. Further, the slider 81 is formed with a receiving hole 83 that opens downward.

  On the other hand, as shown in FIG. 8, the engagement component 91 includes a shaft portion 95 inserted into the transverse hole 85 of the slider 81, and an engagement surface 68 of the main body member 60 extending from the shaft portion 95. And an engaging arm portion 92. The arm portion 92 of the engagement component 91 extends between the slider 81 and the engagement surface 68 of the main body member 60. A spacer protrusion 82 is provided on the surface of the slider 81 that faces the engagement surface 68. As a result, a space for arranging the arm portion 92 is secured between the standing portion 65 of the main body member 60 and the sliding member 80.

  A biasing member 52 is inserted into the receiving hole 83 of the slider 81. As shown in FIG. 8, the biasing member 52 configured as a compression spring in the illustrated example includes a bottom portion 63 of the main body member 60 and a shaft portion 95 of the engaging component 91 extending across the receiving hole 83. It extends between. As a result, the urging member 52 urges the slider 81 from the lower side (one side) to the upper side (the other side) along the sliding direction (vertical direction) via the shaft portion 95 of the engaging component 91. Yes.

  As shown in FIGS. 8-11, the arm part 92 of the engagement component 91 has the engagement piece 93b and the attitude | position holding piece 93a in the part used as the both ends of the longitudinal direction. The engagement piece 93b and the posture maintaining piece 93a protrude toward the side away from the slider 81, that is, toward the upright portion 65 side. The engagement piece 93b and the posture holding piece 93a have a circular cross-sectional shape in a cross section orthogonal to the protruding direction. Then, due to the engagement between the engagement piece 93b of the engagement component 91 and the engagement surface 68 of the main body member 60, the sliding member 80 moves from the upper side (other side) to the lower side (one side) along the sliding direction ds. The position where the urging force of the urging member 52 is held back by the urging force of the urging member 52 every time the urging member 52 is pushed to the first holding position shown in FIG. 5 and the second holding position shown in FIG. It changes alternately with the position. The posture holding piece 93a maintains the posture (inclination) of the arm portion 92 with respect to the standing portion 65 of the main body member 60, that is, the arm portion 92 extends along the sliding direction ds, A stable engagement with the engagement surface 68 is ensured.

  Hereinafter, the engagement between the engagement piece 93b and the engagement surface 68 will be described in detail. First, as shown in FIG. 9, the transverse hole 85 of the slider 81 is configured such that the upper side (the other side) in the sliding direction (one direction) ds is a flat surface 85a. On the other hand, the shaft part 95 of the engaging component 91 has a long side part 95a made of a straight line, a short side part made of a straight line shorter than the long side part 95a, and one in the sliding direction in a cross section orthogonal to the longitudinal direction. It has a cross-sectional shape that is disposed on the side and surrounded by a curved portion 95c made of, for example, an arc (arc or elliptical arc). Further, the size of the transverse hole 85 of the slider 81 is larger than the size of the shaft portion 95 of the engaging component 91. For this reason, the axial part 95 can rotate in the cross hole 85 centering on the longitudinal direction.

  The shaft portion 95 of the engaging component 91 is urged by the urging member 52 from below to above. Therefore, when only the urging force from the urging member 52 is applied to the engaging component 91, the length x along the sliding direction from the upper flat surface 85 a of the transverse hole 85 to the lower end of the shaft portion 95. The direction of the shaft portion 95 is changed to the state shown in FIG. 9, that is, the state in which the long side portion 95a of the shaft portion 95 is in contact with the upper flat surface of the transverse hole 85 so that (FIGS. 9 to 11) is shortened. Be energized. As a result, the position of the engagement piece 93b along the direction orthogonal to the sliding direction ds is urged from the position shown in FIGS. 10 and 11 toward the position shown in FIG. Become.

  Next, the engagement surface 63 of the main body member 60 with which the engagement piece 93b of the engagement component 91 comes into contact will be described. The engaging surface 68 is provided with a first raised portion 70 that protrudes toward the sliding member 80 and a second raised portion 69 that is positioned below the first raised portion 70. The first raised portion 70 has a planar shape formed by chamfering a quadrangle defined by three convex corner portions 70a, 70b, 70c and one concave corner portion 70d. As shown in FIG. 12, the first corner 70a is located on the most other side (upper side) in the sliding direction ds and on the one side (left side in FIG. 12) in the direction orthogonal to the sliding direction ds. positioned. The second convex corner portion 70b is located on the other side (the right side in FIG. 12) in the direction orthogonal to the sliding direction ds. Further, the fourth concave corner portion 70d is disposed between the second convex corner portion 70b and the third convex corner portion 70c in the direction orthogonal to the sliding direction ds. Further, the contour of the second raised portion 69 on the side facing the first raised portion 70 is formed to be complementary to the contour of the first raised portion 70 on the side facing the second raised portion 69.

  By the way, in FIG. 12, when the sliding member urged | biased by the urging | biasing member 52 is hold | maintained in the 1st holding position, the position (the engagement piece 93b of the engagement component 91 will be arrange | positioned). The urging position of the engaging piece is indicated by a solid line. The urging position of the engaging piece is located above (on the other side) the first convex corner 70a in the sliding direction ds, and the first convex corner 70a and the first in the direction orthogonal to the sliding direction ds. It is located between the three convex corners 70c.

  In the sliding member 80 and the main body member 60 configured as described above, the sliding member 80 is one side from the other side end (upper end) within the slidable range along the sliding direction with respect to the main body member 60. Each time the slider is moved to the end (lower end), the engagement piece 93b moves along the circumference of the first raised portion 70 along the arrow in FIG. In the present embodiment, one side end (lower end) of the slidable range of the sliding member 80 is one side end (lower side) of the operation piece 88 of the sliding member 80 in the hole 79 of the main body member 60. The other end (upper end) of the slidable range of the sliding member 80 is the other end (upper side) of the operation piece 88 of the sliding member 80 in the hole 79 of the main body member 60. End).

  First, when the sliding member 80 is disposed at the first holding position which is the other side in the sliding direction, as shown in FIGS. 8, 9 and 12, the engaging piece of the sliding member 80 is engaged. 93 b is located above the first raised portion 70 of the main body member 60 and is separated from the first raised portion 70. When the sliding member 80 is pushed from the other side (upper side) toward the one side (lower side) along the sliding direction ds from this state, the engaging piece 93b comes into contact with the first raised portion 70, and the first The ridge 70 slides on the slope connecting the first convex corner 70a and the second convex corner 70b. At this time, the engaging component 91 of the sliding member 80 resists the biasing force of the biasing member 52, and the long side portion 95 a of the shaft portion 95 is in surface contact with the flat surface 85 a of the transverse hole 85 in FIG. 9. From the state, as shown in FIG. 10, the shaft portion 95 rotates around the axial direction. In particular, when the engagement piece 93 passes in the vicinity of the second convex corner portion 70b, the short side portion 95b of the shaft portion 95 comes into surface contact with the flat surface 85a of the transverse hole 85 as shown in FIG. It becomes like this. Then, when the sliding member 80 slides further toward one side and the engagement piece 93b exceeds the second convex corner 70b of the first raised portion 70, the biasing force from the biasing member 52 causes the shaft It rotates around the axial direction of the part 95 in the opposite direction. The operator can grasp this situation by response or sound.

  Here, or after moving the sliding member 80 to one side end (lower side end) of the slidable range, the pressing of the sliding member 80 toward the one side in the sliding direction ds is released. Then, the sliding member 80 moves toward the other side (upper side) by pressing from the urging member 52. Then, the engaging piece 93b is guided to the slope between the second convex corner 70b and the fourth concave corner 70d of the first raised portion 70 and / or the second raised portion 69, and is shown by the dotted line in FIG. It is guided to the position and fits into the concave fourth corner 70d. The engagement piece 93b is maintained in the state accommodated in the concave fourth corner 70d by the urging force of the urging member 52. The position of the sliding member 80 at this time is the second holding position shown in FIG.

  When the sliding member 80 in the second holding position is pushed again from the other side to the one side along the sliding direction ds, the engagement piece 93b is formed between the concave portion 70d of the first raised portion 70 and the third convex angle. Crossing the third convex corner 70c of the first raised portion 70 while being guided by the slope connecting the portion 70c and the second raised portion 69. The operator can grasp this situation by response or sound. Here, or after moving the sliding member 80 to one side end (lower side end) of the slidable range, the pressing of the sliding member 80 toward the one side in the sliding direction ds is released. Then, the sliding member 80 moves toward the other side (upper side) by pressing from the urging member 52 to the other side end (upper side end) of the slidable range, and the engagement piece 93 is the first raised portion. It moves to the position of the solid line in FIG. The position of the sliding member 80 at this time is the first holding position shown in FIG.

  The engagement piece 93 is guided by the slope connecting the third convex corner 70c and the first convex corner 70a of the first raised portion 70, and passes through the vicinity of the first convex corner 70a. At this time, as shown in FIG. 11, the shaft portion 95 is rotated so that only the connecting portion between the long side portion 95 a and the curved portion 95 c of the shaft portion 95 is in contact with the flat surface 85 a of the transverse hole 85. After that, when the sliding member 80 moves to the first holding position, the engagement piece 93b is connected to the other side of the slope connecting the first convex corner 70a and the second convex corner 70b of the first raised portion 70. (Upper side).

  As described above, every time the sliding member 80 is slid from the other side to the one side along the sliding direction ds with respect to the main body member 60, the sliding member 80 is returned to the other side by the urging force of the urging member 52. The position at which it is held is alternately changed between the first holding position and the second holding position.

  Next, returning to FIGS. 3 to 8, the rocking member 100 will be described in detail. As already described, the swinging member 100 is engaged with the operation piece 88 of the sliding member 80 and is disposed at the first position when the sliding member 80 is held at the first holding position, and the sliding member 100 is slid. When the moving member 80 is held at the second holding position, the moving member 80 is arranged at the second position shown in FIG.

  As shown in FIG. 13, the swing member 100 includes a pair of plate-like portions 105, a connecting shaft portion 103 that connects the pair of plate-like portions 105, and a brake pin 101 that extends outward from each plate-like portion 105. And have. When the swing member 100 is held at the second position, the brake pin 101 enters between two adjacent protrusions 46 of the wheel 45 as shown in FIG. On the other hand, when the swing member 100 is held in the first position, the brake pin 101 is separated from the protrusion 46 of the wheel 45 as shown in FIG.

  The pair of plate-like portions 105 are arranged so as to sandwich the main body member 60 corresponding to the pair of operation pieces 88 of the sliding member 80. Each plate-like portion 105 is formed with a through hole 106 through which an attachment pin 58 for attaching the swinging member 100 to the main body member 60 so as to be swingable. As already described above, the swing axis Ld of the swing member 100 is parallel to the rotational axis La of the wheel 45. The plate-like portion 105 is formed with a first engagement claw 110 and a second engagement claw 115 that engage with the operation piece 88. Due to the engagement between the operation piece 88 and the first engaging claw 110 or the second engaging claw 115, the swinging member 100 swings according to the sliding of the sliding member 80. The first engagement claw 110 and the second engagement claw 115 will be described in detail later.

  The pair of brake pins 101 extends outward in both directions along a direction parallel to the swing axis Ld. As shown in FIG. 1, the wheel holding mechanism 40 holds the wheels 45 on both outer sides along the rotation axis La of the wheels 45. On the side of each wheel 45 facing the wheel holding mechanism 40, a protrusion 46 (see FIG. 6) that extends in a normal line from the rotation axis La of the wheel 45 is formed. The pair of brake pins 101 can be engaged with the corresponding protrusions 46. The pair of brake pins 101 and the connecting shaft portion 103 are aligned on a straight line along the rotation axis La of the wheel 45. As shown in FIG. 13, a reinforcing rib 107 for reinforcing the brake pin 101 is formed between the plate-like portion 105 and the brake pin 101.

  The connecting shaft portion 103 passes below the main body member 60. On the other hand, as shown in FIG. 8, a receiving portion (concave portion) 64 for receiving the connecting shaft portion 103 is formed on the lower surface of the main body member 60 formed by the bottom portion 63. When observed along the swing axis Ld of the swing member 100, the contour of the receiving portion 64 is along the movement locus of the connecting shaft portion 103 when the swing member 100 swings. Further, as well shown in FIG. 8, both ends of the receiving portion 64 are defined by a wall portion 64a and a wall portion 64b. When the swing member 100 is disposed at the first position (regulation release position), the connecting shaft portion 103 is disposed at a position adjacent to the one wall portion 64a, and the swing member beyond the first position. The swing of 100 is restricted. Further, when the swing member 100 is disposed at the second position (regulation position), the connecting shaft portion 103 is disposed at a position adjacent to the other wall portion 64b, and the swing member 100 beyond the second position is disposed. Is controlled. That is, the swing of the swing member 100 with respect to the main body member 60 is restricted between the first position (regulation release position) and the second position (restriction position) by the contact between the swing member 100 and the main body member 60. The

  Next, the first engagement claw 110 and the second engagement claw 115 formed on the plate-like portion 105 of the swing member 100 will be described. Note that the first engagement claw 110, the second engagement claw 115, and the plate-like portion 105 are on the surface orthogonal to the rotation axis La of the wheel 45, in this example, the protruding direction of each operation piece 88 of the sliding member 80. Extends on a plane orthogonal to Then, the side end surfaces of the first engagement claw 110 and the second engagement claw 115 forming a part of the plate-like portion 105 come into contact with the side surface of the operation piece 88.

  The first engaging claw 110 has an abutment surface 111 that contacts the operation piece 88 of the sliding member 80 from the other side (upper side) in the sliding direction (one direction) ds. As shown in FIG. 6, when the sliding member 80 is held at the second holding position, the contact surface 111 is positioned on the movement path ra of the operation piece 88 when the sliding member 80 slides. For this reason, the contact surface 111 contacts the operation piece 88 of the sliding member 80 that slides from the second holding position toward the first holding position. When the sliding member 80 moves to the first holding position, the contact surface 111 moves from the other side (upper side) in the sliding direction to a position adjacent to the operation piece 88. The position of the swing member 100 at this time is the first position (regulation release position) shown in FIG.

  In the state shown in FIG. 5, the sliding member 80 urged to the other side in one direction by the urging member 52 is caused by the operation piece 88 coming into contact with the other side end of the hole 79 of the main body member 60. The first holding position is held. At this time, the swinging member 100 is restricted from swinging from the first position toward the second position by the first engaging claw 110 coming into contact with the operation piece 88 from the other side (upper side) of the one direction ds. Is done. At the same time, the connecting shaft portion 103 of the swing member 100 abuts against the wall portion 64a of the main body member 60, thereby swinging beyond the first position of the swing member 100, in other words, the first position of the swing member 100. From the second position side to the opposite side to the second position side is restricted. According to such a braking mechanism 50, the state in which the wheel 45 can be rotated can be stably maintained.

  As shown in FIG. 5, the second engagement claw 115 is provided apart from the first engagement claw 110. A recess 109 is formed between the first engagement claw 110 and the second engagement claw 115. As shown in FIG. 5, the operation piece 88 of the sliding member 80 held in the first holding position can be disposed in the recess 109 between the first engagement claw 110 and the second engagement claw 115. It has become. A head 87 is provided at the tip of the operation piece 88. As indicated by a two-dot chain line in FIG. 5, the head 87 extends so as to cover a part of the first engagement claw 110 and a part of the second engagement claw 115. According to such a head 87, it is possible to effectively prevent clothing or the like from being caught between the operation piece 88 and the first engagement claw 110 or the second engagement claw 115. The stable engagement between the operation piece 88 and the first engagement claw 110 or the second engagement claw 115 can be ensured.

  As shown in FIG. 5, the second engaging claw 115 is disposed at a position facing the operation piece 88 of the sliding member 80 when the sliding member 80 is held at the first holding position. It has a surface 116 and a second surface 117 adjacent to the first surface 116. The first surface 116 of the second engagement claw 115 faces the sliding member 80 held at the first holding position from one side (lower side) in the sliding direction ds of the sliding member 80. For this reason, the first surface 116 of the second engagement claw 115 contacts the operation piece 88 of the sliding member 80 that slides from the first holding position toward the second holding position.

  When the sliding member 80 moves to the second holding position, the second engagement claw 115 of the swinging member 100 moves along one direction (sliding direction) ds of the operation piece 88, as shown in FIG. From ra, it is arranged at a position that crosses the one direction ds, and in particular, is shifted to the orthogonal side. The position of the swing member 100 at this time is the second position where the brake pin 101 is engaged with the protrusion 46 of the wheel 45.

  In order to hold the sliding member 80 at the second holding position, it is necessary to push the swinging member 100 once to the other side (lower side) position beyond the second holding position along one direction ds. is there. That is, from the state shown in FIG. 6, it is necessary to push the swinging member 100 further downward as shown in FIG. At this time, as shown in FIG. 6, the swinging member 100 moves from the movement path ra along one direction (sliding direction) ds of the operation piece 88 to the side that intersects the one direction ds, particularly orthogonally. It is arranged at a shifted position. That is, the swing member 100 is not located on the movement path ra along one direction (sliding direction) ds of the operation piece 88. For this reason, the swinging member 100 does not need to move beyond the second position when moving from the first position to the second position. Further, in the embodiment described here, the connecting shaft portion 103 of the swing member 100 abuts against the wall portion 64b of the receiving portion 64 formed on the main body member 60, so that the swing member 100 moves beyond the second position. Can no longer do.

  According to such an aspect, as shown in FIG. 6, it is necessary to make the depth of the protrusion 46 engaged with the brake pin 101 deeper than the position of the brake pin 101 of the swinging member 100 in the second position. There is no. Therefore, as shown in FIG. 6, the brake pin 101 of the swinging member 100 in the second position can be positioned in the vicinity of the trough between the two adjacent protrusions 46. The stable engagement between the 101 and the protrusion 46 can be ensured, and the rotation of the wheel 45 can be stably regulated. Further, it is not necessary to increase the length of the protrusion 46 and to increase the movement stroke of the brake pin 101 accordingly. Thereby, the braking member 50 can be downsized. Moreover, since it is not necessary to enlarge the braking member 50, this braking member 50 can also be applied to the existing wheel holding mechanism and stroller so far.

  As shown in FIG. 6, when the sliding member 80 is held at the second holding position, the second engagement claw 115 of the swinging member 100 moves in one direction (sliding direction) ds of the operation piece 88. It is arranged at a position that crosses the one direction ds from the moving path ra along the side and that is shifted to a side that is particularly orthogonal. Then, the swinging member 100 in the second position swings from the second position toward the first position by the second engagement claw 115 coming into contact with the operation piece 88 from the direction intersecting the one direction ds. Will be regulated. Therefore, while the sliding member 80 is held at the second holding position, the swinging member 100 is held at the second position, and the engagement between the brake pin 101 and the protrusion 46 of the wheel 40 continues to be ensured. The rotation of 45 is restricted.

  According to such an aspect, for example, because the stroller 10 is positioned on an inclined surface, even if a force to rotate the wheel 45 of the stroller 10 is applied, the brake is accidentally performed accidentally. It is possible to effectively prevent the engagement between the pin 101 and the protrusion 46 of the wheel 40 from being released. Therefore, the stroller 10 can be maintained in a more stable stopped state.

  In particular, in the embodiment described here, the second engagement claw 115 has a second surface 117 adjacent to the first surface 116. When the sliding member 80 is held at the second holding position, the second surface 117 faces the operation piece 88 of the sliding member 80 from the side perpendicular to one direction (sliding direction) ds. When the second surface 117 comes into contact with the operation piece 88, the swinging of the swinging member 100 from the second position (restriction position) toward the first position (restriction release position) is restricted. . As shown in FIG. 6, the movement path rb of the second surface 117 when the swinging member 100 swings intersects the sliding direction (one direction) ds of the sliding member 80. The moving path ra of the operation piece 88 at the time of sliding is crossed. The operation piece 88 of the sliding member 80 held at the second holding position is located on the movement path rb of the second surface 117 when the swinging member 100 swings. For this reason, when the operation piece 88 engages with the second surface 117 of the second engagement claw 115, the swing member 100 can be held extremely stably at the second position to restrict the rotation of the wheel 45. it can.

  Further, in the embodiment described here, the second surface 117 of the second engagement claw 115 is configured so that the sliding direction (one direction) of the sliding member 80 is maintained when the sliding member 80 is held at the second holding position. ) It extends parallel to ds. Thereby, the operation piece 88 can receive the force from the second surface 117 in a distributed manner. Therefore, damage to the braking mechanism 50 and the like can be effectively prevented, the swinging member 100 can be held extremely stably at the second position, and the rotation of the wheel 45 can be restricted. From the viewpoint of expecting such effects, the surface of the operation piece 88 that faces the second surface 117 when the sliding member 80 is held at the second holding position is the sliding member 80. Is preferably extended in parallel with the second surface 117 when held at the second holding position.

  The swinging restriction from the second position toward the first position of the swinging member 100 using such an operating piece 88 is such that the sliding member 80 is directed to one side of the sliding direction (one direction). It is also preferable that it is exhibited while moving beyond the second holding position to one side end within the slidable range. That is, as shown in FIG. 7, when the sliding member 80 is located on the most side within the slidable range, in the embodiment described here, the operation piece 88 of the sliding member 80 is on one side of the long hole 97. Even when it is in contact with the end, the second engagement claw 117 is disposed at a position shifted laterally from the movement path ra along one direction of the operation piece 88, and the second engagement claw 117 is moved to the operation piece. It is preferable that the swinging of the swinging member 100 from the second position is restricted by coming into contact with 88 from a direction intersecting the one direction ds. In addition, the operating piece 88 of the sliding member 80 located on the most side within the slidable range of the sliding member 80 is positioned on the moving path rb of the second surface 117 when the swinging member 100 swings. It is preferable.

  By the way, in the braking mechanism disclosed in the above-mentioned JP2005-14894A, the engagement state between the brake pin and the protrusion is maintained by fitting the brake pin of the operation member between the two protrusions provided on the wheel. It was configured as follows. When such a conventional configuration is adopted, the shape of the protrusion is restricted, and depending on the rotational position of the wheel, the brake pin may collide with the top of the protrusion and the brake pin may be fitted between the two protrusions. There are things you can't do. In this case, in order to restrict the rotation of the wheel and brake the stroller, it is necessary not only to operate the brake pin but also to adjust the rotational position of the wheel in advance. On the other hand, in the braking mechanism 50 according to the present embodiment, it is possible to avoid such a conventional problem, and the rotation of the wheel 45 of the stroller 10 and the rotation of the wheel 45 of the stroller 10 are possible. It is possible to change the state in the above state very easily.

  In the present embodiment as described above, when the sliding member 80 is held at the second holding position, the second engaging claw 115 of the swinging member 100 located at the second position (regulating position) is It is arranged at a position shifted laterally from the movement path ra along one direction ds of the operation piece 88, and swings when the second engagement claw 115 contacts the operation piece 88 from a direction intersecting the one direction ds. The swing of the member 100 from the second position toward the first position is restricted. For this reason, it becomes possible to regulate rotation of the wheel 45 stably.

  Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described.

  In the above-described embodiment, the example in which the braking mechanism 50 is incorporated in the wheel holding mechanism 40 has been described, but the present invention is not limited thereto. The braking mechanism 50 may be supported by, for example, the rear connecting member 19 and may be engaged with a wheel or an axle of a separately configured wheel holding mechanism to restrict the rotation of the wheel.

  In the above-described embodiment, a specific example of a configuration that enables the sliding member 80 to be held at either the first holding position or the second holding position has been described. However, the above-described configuration is merely an example, and the configuration for holding the sliding member 80 at the first holding position or the second holding position is appropriately changed, for example, by adopting the configuration disclosed in WO2010 / 143300. Can do.

  Furthermore, in the above-described embodiment, a specific example of a configuration in which the brake pin 101 and the protrusion 46 of the wheel 45 are engaged with the swing of the swing member 100 and the rotation of the wheel 45 is restricted. Explained. However, the above-described configuration is merely an example, and the engagement between the swing member 100 and the wheel 45 or the axle 49 for restricting the rotation of the wheel 45 may be realized by any configuration.

  Furthermore, although the example which operates the sliding member 80 via the operation member 55 comprised as an operation lever was shown in embodiment mentioned above, it is not restricted to this. The configuration of the operation member 55 may be changed as appropriate, or the operation member may be omitted.

  Further, in the above-described embodiment, the example in which the braking mechanism 50 is fixed to the leg 24 via the caster member 41 is shown. However, the braking mechanism 50 may be directly fixed to the leg 24. That is, the wheel holding mechanism 40 having the braking mechanism 50 may hold the wheel so that it cannot turn.

  Further, in the above description, the example in which the wheel holding mechanisms 40 provided on the left and right rear legs 24 are configured in the same manner is shown, but the present invention is not limited thereto. For example, a transmission mechanism for transmitting the operation of the sliding member 80 of one wheel holding mechanism 40 to the sliding member 80 of the other wheel holding mechanism 40 may be provided. According to such a modification, it is possible to operate both the left and right wheel holding mechanisms 40 by operating one wheel holding mechanism 40.

  Furthermore, the wheel holding mechanism 40 described above may be attached to the front leg 22 or may be attached to the front leg 22 and the rear leg 24. Furthermore, the wheel holding mechanism 40 described above may be attached only to the rear leg 24 on one side.

  Furthermore, the configuration of the stroller body 11 of the stroller 10 described in the above-described embodiment is merely an example. For example, the frame unit 15 may be configured such that it cannot be folded. Further, in the stroller main body 11 of the stroller 10 described in the above-described embodiment, the example in which the handle 13 is configured to be swingable between the back pressing position and the facing pressing position is shown, but the invention is not limited thereto. In addition, the handle 13 may be configured to be fixed at the back pushing position.

  In addition, although the some modification with respect to embodiment mentioned above was demonstrated above, naturally, it is also possible to apply combining several modifications suitably.

DESCRIPTION OF SYMBOLS 10 Stroller 40 Wheel holding mechanism, rear wheel wheel holding mechanism 41 Caster member 42 Fixing portion 43 Turning portion 45 Wheel 46 Projection 50 Braking mechanism 52 Biasing member 55 Operation member 60 Main body member 64 Receiving portion, recess 64a Wall portion 64b Wall Portion 80 Slide member 87 Head 88 Operation piece 100 Swing member 101 Brake pin 103 Connecting shaft portion 105 Plate-like portion 109 Recess 110 First engagement claw 111 Contact surface 115 Second engagement claw 116 First surface 117 First 2 sides

Claims (13)

A braking mechanism for restricting the rotation of the stroller wheel,
A body member;
A slide that is slidable in one direction with respect to the main body member, and is held in one of a first holding position and a second holding position on one side in the one direction with respect to the first holding position. A moving member;
A swinging member attached to the main body member so as to be swingable,
The sliding member has an operation piece that can be engaged with the swing member,
The swing member includes a first engagement claw that can be engaged with the operation piece of the sliding member that slides from the second holding position toward the first holding position, and the first holding position from the first holding position. A second engaging claw capable of engaging with the operating piece of the sliding member that slides toward the second holding position;
The swinging member is separated from the wheel when the sliding member is held at the first holding position by the engagement between the first engaging claw and the second engaging claw and the operation piece. And when the sliding member is held at the second holding position, it is arranged at a second position that restricts the rotation of the wheel.
When the sliding member is held at the second holding position, the second engaging claw of the swinging member located at the second position moves from the movement path along the one direction of the operation piece. The second position of the oscillating member toward the first position when the second engagement claw is disposed at a position shifted laterally and the second engagement claw contacts the operation piece from a direction intersecting the one direction. Braking mechanism for strollers where swinging from the side is restricted. The second engaging claw of the swing member is
A first surface disposed at a position facing the operation piece of the sliding member when the sliding member is held at the first holding position;
A second surface disposed at a position facing the operation piece of the sliding member from a side when the sliding member is held at the second holding position;
When the sliding member is held at the second holding position, the swinging member comes into contact with the second surface of the second engaging claw from the direction intersecting the one direction with the operation piece. The stroller braking mechanism according to claim 1, wherein swinging from the second position to the second position from the second position is restricted. The moving path of the second surface when the swinging member swings crosses the moving path of the operation piece when the sliding member slides,
The stroller for baby stroller according to claim 2, wherein the operation piece of the sliding member held at the second holding position is located on a moving path of the second surface when the swinging member swings. Braking mechanism.   4. The stroller braking mechanism according to claim 2, wherein the second surface extends parallel to the one direction when the sliding member is held at the second holding position. 5. The first engaging claw of the swing member has a contact surface that comes into contact with the operation piece of the sliding member from the other side in one direction,
When the sliding member is held at the first holding position, the operation piece of the sliding member is a recess between the first engagement claw and the second engagement claw of the swing member. The stroller braking mechanism according to any one of claims 1 to 4, which is located inside.   The stroller according to claim 5, wherein a head portion extending to cover at least a part of the first engagement claw and at least a part of the second engagement claw is formed on the operation piece of the sliding member. Braking mechanism.   The rocking | fluctuation with respect to the said main body member of the said rocking | swiveling member is controlled between the said 1st position and the said 2nd position by the contact with the said rocking | swiveling member and the said main body member. Braking mechanism for baby strollers. A biasing member supported by the main body member and biasing the sliding member against the main body member from the one side to the other side along the one direction;
Each time the sliding member is pressed from the other side toward the one side along the one direction, the sliding member is returned to and held by the urging force of the urging member. The stroller braking mechanism according to any one of claims 1 to 7, wherein a position is configured to alternately change between the first holding position and the second holding position.   An operation member operatively attached to the main body member, further comprising an operation member capable of sliding the sliding member relative to the main body member by operating with respect to the main body member. The braking mechanism according to any one of claims 1 to 8. A wheel holding mechanism attached to the leg of the stroller,
The braking mechanism according to any one of claims 1 to 9,
An axle held by the body member of the braking mechanism;
A wheel holding mechanism for a stroller, comprising: a wheel attached to the axle. A caster member that is provided between the leg and the main body member and connects the leg and the main body member;
The wheel support for a stroller according to claim 10, wherein the caster member includes a fixed portion fixed to the leg, and a swivel portion that is pivotably connected to the fixed portion and fixed to the main body member. mechanism.   The wheel support mechanism for a stroller according to claim 11, wherein the axle extends through both the swivel portion of the caster member and the main body member. A stroller body with front legs and rear legs;
A stroller comprising: the wheel holding mechanism according to any one of claims 10 to 12, which is attached to at least one of the front leg and the rear leg.

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