JP5020655B2 - stroller - Google Patents

Description

  The present invention relates to a foldable baby stroller, and in particular, to provide a baby stroller that has excellent running stability during deployment, can be reduced in outer dimensions during folding, and can be easily folded. Objective.

  In strollers used when taking infants outdoors for walks or shopping, the stroller can be folded from the unfolded state where the infant can ride by rotating each component relative to each other Strollers are being developed. The folded stroller is reduced in outer dimensions in at least one of the front-rear direction (traveling direction) and the up-down direction (vertical direction), and is suitable for storage, carrying, and the like. Further, in the stroller disclosed in Patent Document 1, components extending in a lateral direction such as a rear stay provided between a pair of rear legs are configured to be bendable, and the external dimensions are also reduced in the lateral direction. So that the stroller can be folded.

  A foldable baby stroller usually has a lock member that restricts rotation between components. In the stroller disclosed in Patent Document 1, a lock member is provided in a lower portion of the handle. The lock member engages with a bracket that connects the handle and the rear leg, and restricts the rotation of the handle and the bracket.

According to such a lock member, the stroller can be maintained in the unfolded state by restricting the rotation between the components. The lock member also helps to increase the rigidity of the stroller and stabilize the travel of the stroller when the stroller is used in the unfolded state. For this reason, in the conventional stroller, normally, two locking members respectively engaged with the left and right brackets are provided, and the maintenance of the unfolded state is more reliably maintained and the stability during traveling is enhanced.
Japanese Utility Model Publication No. 6-37050

  By the way, in a baby stroller that can also be folded in the lateral direction, the rear stay that can be bent in the lateral direction sufficiently functions as a stay when the baby stroller is deployed. It may be necessary to provide a stay locking member (rear stay locking member). When the rear stay lock member is provided, the unfolded state can be more reliably maintained, and the stability during traveling can be improved. However, when the stroller is folded, the rear stay lock member must be operated in addition to the normal two lock members engaged with the bracket.

  That is, when the rear stay lock member is provided, the running stability can be improved, but the folding operation becomes complicated. Further, since the rear stay lock member is arranged at a position that is difficult to be seen by the operator (user), the operator may forget to release the rear stay lock member during the folding operation. In particular, if the baby stroller is folded without releasing the rear stay lock member, the baby stroller may even be damaged.

  The present invention has been made in consideration of the above points, and has a stroller that has excellent running stability at the time of unfolding, can be reduced in outer dimensions at the time of folding, and can be easily folded. The purpose is to provide.

  The stroller according to the present invention is a foldable stroller, and includes left and right rear legs, left and right brackets each including a first connection portion rotatably connected to the left and right rear legs, and the left and right brackets An operating handle including left and right lower portions rotatably connected to a second connecting portion different from the first connecting portion, a bendable rear stay connecting the left and right rear legs, and the handle An engagement position that is provided on at least one of the left and right lower portions and engages with one of the left and right brackets corresponding to the lower portion to restrict the rotation of the handle relative to the bracket; and the bracket A locking member that is movable between a release position where the engagement with the rear stay is released, and a restriction position that is provided on the rear stay and restricts bending of the rear stay A rear stay lock member that is movable between a bending position that allows the rear stay to be bent, and the engagement position of the lock member provided between the lock member and the rear stay lock member. Interlocking means capable of moving the rear stay lock member from the restricting position to the bent position in conjunction with the movement from to the release position.

  The stroller according to the present invention includes left and right armrests rotatably connected to the left and right rear legs, left and right front legs respectively connected to the left and right armrests, and an intermediate portion of the left front leg. A first link member connecting the second portion of the right bracket or the lower right portion of the handle; an intermediate portion of the right front leg; and the second portion of the left bracket or the lower left portion of the handle. An X-shaped link including a second link member that connects the first link member and the second link member may be rotatably connected.

  In the stroller according to the present invention, the lock member is provided on the handle so as to be slidable between the engagement position and the release position, and the rear stay lock member is provided between the restriction position and the bending position. May be slidably provided on the rear stay.

  In the stroller according to the present invention, the lock member is biased from the release position toward the engagement position, and the rear stay lock member is biased from the bent position toward the restriction position. May be.

  Furthermore, the stroller according to the present invention includes operation means provided in an upper part above the lower part of the handle, and transmission means for connecting the operation means and the lock member, the lock member A remote control mechanism for operating the movement from the engagement position to the release position may be further provided. In such a stroller, the transmission means may be a wire extending in a tubular handle.

  Further, in the stroller according to the present invention, a left lock member that can be engaged with the left bracket is provided at the lower left portion of the handle, and can be engaged with the right bracket at the lower right portion of the handle. A right lock member may be provided, and the interlocking means may be provided between any one of the left and right lock members and the rear stay lock member.

  Further, in the stroller according to the present invention, the handle may include left and right handle members that are separate from each other, and the left and right handle members may include the left and right lower portions, respectively.

  Furthermore, in the stroller according to the present invention, the interlocking means has both ends passing through the tube fixed to the lower part of the handle and the rear stay, and the tube, and both ends of the locking member and the rear. You may make it have a wire each fixed to the stay lock member.

  According to the present invention, the rear stay lock member can move from the restriction position to the bending position in conjunction with the movement of the lock member from the engagement position to the release position. Therefore, the folding operation can be easily performed, and it is possible to prevent forgetting to release the rear stay lock member when the stroller is folded.

BEST MODE FOR CARRYING OUT THE INVENTION

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

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

  In the present specification, the terms “front”, “rear”, “up”, “lower”, “front / rear direction”, and “up / down direction” are in a deployed state unless otherwise specified. "Front", "rear", "upper", "lower", "front-rear direction", and "up-down direction". More specifically, the “front-rear direction” of the stroller 10 corresponds to the traveling direction of the stroller. Therefore, the “front-rear direction” is a direction connecting the upper left and the lower right of the paper surface in FIG. 1, and the upper left side of the paper surface in FIG. 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 plane. Therefore, when the ground contact surface is a horizontal plane, the “vertical direction” refers to the 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”.

  1 to 4 show the overall configuration of the stroller 10. First, the overall configuration of the stroller will be described. As shown in FIGS. 1 to 4, the stroller 10 according to the present embodiment includes a pair of left and right front legs 12 that hold the front wheel 13 rotatably, and a pair of left and right rear legs 16 that hold the rear wheel 17 rotatably. A handle 20 and a pair of left and right armrests 26 are provided. As shown in FIGS. 1 to 4, the stroller 10 according to the present embodiment has a generally symmetric configuration around a horizontal center line along the front-rear direction. In the present embodiment, the stroller 10 further includes other components as described below.

  As shown in FIG. 1, in the present embodiment, the handle 20 is constituted by a pair of handle members 21 arranged on the left and right, respectively. That is, the handle 20 for operating the stroller 10 is configured by the separate left handle member 21 and right handle member 21. The handle member 21 can be formed from, for example, an aluminum alloy pipe. A grip handle 22 is provided at the upper end of each handle member 21. Further, the rear end portion of the armrest 26 arranged on the corresponding side (left side or right side) is connected to the intermediate portion 21b of each handle member 21 so as to be rotatable (swingable).

  Further, the upper end portion of the front leg 12 is connected to a front portion of the armrest 26 disposed on the corresponding side (left side or right side) so as to be rotatable (swingable). Similarly, the upper end of the rear leg 16 is connected to the front portion of the armrest 26 disposed on the corresponding side (left side or right side) so as to be rotatable (swingable). However, the connecting position of the front leg 12 to the armrest 26 is in the front position or the same position as the connecting position of the armrest 26 of the rear leg 16 in front of the connecting position of the armrest 26 of the rear leg 16. The armrest 26 can be made of, for example, resin, and the front legs 12 and the rear legs 16 can be made of, for example, aluminum alloy pipes.

  The stroller 10 further includes a left side connecting member 28 that connects the left front leg 12 and the left handle member 21, and a right side connecting member 28 that connects the right front leg 12 and the right handle member 21. Each side connecting member 28 has a front portion thereof rotatably connected to an intermediate portion of the front leg 12 and a rear portion thereof rotatably connected to an intermediate portion 21b or a lower portion 21a of the handle member 21. Here, the connection location of the side connection member 28 to the handle member 21 is located below the connection location of the armrest 26 to the handle member 21 along the vertical direction. Such a side connection member 28 may be formed from, for example, an aluminum alloy plate.

  The stroller 10 further includes a left bracket 30 that connects the left rear leg 16 and the left handle member 21, and a right bracket 30 that connects the right rear leg 16 and the right handle member 21. Each bracket 30 has a first portion 30a connected to an intermediate portion or a lower portion of the rear leg 16 so as to be rotatable (swingable), and a second portion 30b different from the first portion 30a is provided below the handle member 21. The portion 21a is rotatably connected. In the illustrated example, the connection location of the bracket 30 to the handle member 21 is located below the connection location of the side connection member 28 to the handle member 21 along the vertical direction.

  Here, FIG. 5 shows the periphery of the right bracket 30 of the stroller 10. On the other hand, FIGS. 6 and 7 show the vicinity of the left bracket 30 of the stroller 10. As shown in FIGS. 5 to 7, in the present embodiment, the bracket 30 has a substantially open V-shape. The first portion 30 a described above corresponds to one end region of the V shape of the bracket 30, and the second portion 30 b corresponds to an intermediate region of the V shape of the bracket 30. 5 to 7, some components are omitted for convenience of explanation.

  The rotation axes of the front leg 12, the rear leg 16 and the handle 20 with respect to the armrest 26, the rotation axes of the front leg 12 and the handle 20 with respect to the side connecting member 28, and the rotation of the rear leg 16 and the handle 20 with respect to the bracket 30. Each of the movement axes is substantially parallel along the lateral direction. As a result, as will be described in detail later, by rotating these components relative to each other, the stroller 10 is reduced in size along at least one of the front-rear direction and the up-down direction. 10 can be folded.

  5 to 7, a lock member 60 is provided on the lower portion 21 a of the handle member 21, and the stroller 10 is unfolded by engaging the lock member 60 with the bracket 30. It can be maintained in a state. The configuration and operation of the lock member 60 will be described in detail later.

  Next, components that extend in the lateral direction will be described. As shown in FIGS. 1 to 4, a footrest member 14 extending in the lateral direction is provided between the pair of front legs 12. The footrest member 14 is made of an elastic material that can be bent, bent, or bent.

  As shown in FIGS. 1 to 4, the pair of rear legs 17 are connected to each other by a rear stay 40 that extends linearly along the lateral direction when the stroller 10 is in the unfolded state. The rear stay 40 includes a first stay member 41 disposed on the left side and a second stay member 42 disposed on the right side of the first stay member 41. The first stay member 41 and the second stay member 42 are connected to each other through a rotation shaft (oscillation shaft) 43 so as to be rotatable (swingable). Further, the first stay member 41 is connected to the middle part or the lower part of the left rear leg 16 so as to be rotatable (swingable), and the second stay member 42 is connected to the middle part or the lower part of the right rear leg 16. It is connected so as to be rotatable (swingable). With such a configuration, the rear stay 40 can be bent between the rear legs 16.

  The rear stay 40 can be formed from, for example, an aluminum alloy plate. Further, in the illustrated example, the connecting portion of the rear stay 40 to the rear leg 16 is located above the connecting portion of the bracket 30 to the rear leg 16 along the vertical direction, and the bracket 30 of the handle member 21 is located. It is a position below the connection location to.

  As shown in FIGS. 3 and 4, in the stroller 10 according to the present embodiment, the outer dimension of the stroller 10 is reduced in the lateral direction by bending the rear stay 40 and bending the footrest member 14. Thus, the stroller 10 can be folded.

  2 and 4, a rear stay lock member 70 that restricts the bending of the rear stay 40 is provided on the rear stay 40, and the rear stay lock member 70 is bent by the rear stay 40. By restricting, the folding in the lateral direction can be restricted. The configuration and operation of the rear stay lock member 70 will be described in detail later.

  Furthermore, the stroller 10 according to the present embodiment is shown in FIGS. 1 to 4 so that the folding operation in the lateral direction can be automatically performed in conjunction with the folding operation in the front-rear direction or the vertical direction. Thus, a lower X-shaped link 50 and a rear X-shaped link 55 are further provided.

  The lower X-shaped link 50 includes a lower first link member 51a and a lower second link member 51b that are rotatably connected to each other. The lower first link member 51a is connected to the substantially center point in the longitudinal direction of the lower second link member 51b at the substantially center point along the longitudinal direction.

  The front end of the lower first link member 51 a is connected to the middle portion of the left front leg 12. The lower first link member 51a and the left front leg 12 are rotatable with respect to each other about both the axis line orthogonal to the longitudinal direction of the lower first link member 51a and the axis line orthogonal to the longitudinal direction of the left front leg 12 It has become. On the other hand, the rear end of the lower first link member 51 a is connected to the lower portion 21 a of the right handle member 21 and the second portion 30 b of the right bracket 30. As well shown in FIG. 5, a coupling tool 35 is attached to the second portion 30 b of the bracket 30 so as to be rotatable about an axis along the lateral direction. A rear end of the lower first link member 51a is connected to be rotatable (swingable) about an axis perpendicular to the longitudinal direction of the lower first link member 51a. As a result, the lower first link member 51a, the right handle member 21, and the right bracket 30 are both axes that are orthogonal to the longitudinal direction of the lower first link member 51a and the axis that is orthogonal to the longitudinal direction of the right handle member 21. Are pivotable with respect to each other.

  With the same configuration, the front end of the lower second link member 51 b is connected to the middle portion of the right front leg 12. The lower second link member 51b and the right front leg 12 are rotated with respect to each other around both the axis line orthogonal to the longitudinal direction of the lower second link member 51b and the axis line orthogonal to the longitudinal direction of the right front leg 12. It is possible to move. The rear end of the lower second link member 51b is connected to the lower portion 21a of the left handle member 21 and the second portion 30b of the left bracket 30 via the connector 35. The lower second link member 51b, the left handle member 21 and the left bracket 30 have both the axis line orthogonal to the longitudinal direction of the lower second link member 51b and the axis line orthogonal to the longitudinal direction of the left handle member 21. They are pivotable relative to each other as a center.

  On the other hand, the rear X-shaped link 55 has substantially the same configuration as the lower X-shaped link 50 described above, although the attachment position is different. That is, the rear X-shaped link 55 includes a first rear link material 56a and a lower second link material 56b that are rotatably connected to each other. The rear first link member 56a is connected to a substantially central point in the longitudinal direction of the rear second link member 56b at a substantially central point along the longitudinal direction.

  The upper end of the rear first link member 56 a is connected to the upper portion 21 c of the left handle member 21 via the connector 23. The first rear link member 56a and the left handle member 21 rotate with respect to each other about both the axis line orthogonal to the longitudinal direction of the rear first link member 56a and the axis line orthogonal to the longitudinal direction of the left handle member 21. It is possible to move. The connector 23 is slidably mounted on the left handle member 21 so that it can move along the longitudinal direction of the left handle member 21. The lower end of the rear first link member 56a is connected to the lower portion 21a of the right handle member 21 and the second portion 30b of the right bracket 30 via the connector 35 described above. The rear first link member 56a, the right handle member 21, and the right bracket 30 are both axes that are orthogonal to the longitudinal direction of the rear second link member 56a and the axis that is orthogonal to the longitudinal direction of the right handle member 21. They are pivotable relative to each other as a center.

  Similarly, the front end of the rear second link member 56b is connected to the upper portion 21c of the right handle member 21 via a connector 23 slidably attached to the right handle member 21. Then, the rear second link member 56b and the right handle member 21 are centered on both axes of the axis perpendicular to the longitudinal direction of the rear second link member 56b and the axis perpendicular to the longitudinal direction of the right handle member 21. And can be rotated. The rear end of the rear second link member 56b is connected to the lower portion 21a of the left handle member 21 and the second portion 30b of the left bracket 30 via the connector 35. The rear second link member 56b, the left handle member 21 and the left bracket 30 have both the axis line orthogonal to the longitudinal direction of the rear second link member 56b and the axis line orthogonal to the longitudinal direction of the left handle member 21. They are pivotable relative to each other as a center.

  By the way, as well shown in FIG. 1, in the present embodiment, the left and right handle members 21 and the side connection members 28 of the stroller 10 also function as seat support members that support the base seat 58. . That is, the base sheet 58 is attached and stretched to the left and right handle members 21 and the left and right side connecting members 28. A passenger can get on the base sheet 58 via a cushioning material (cushion or the like) (not shown). As well shown in FIG. 1, the left and right handle members 21 also function as hood support members that detachably support the hood 59.

  Next, an operation for folding the stroller 10 having the overall configuration as described above will be described.

  First, the left and right handle members 21 of the operation handle 20 are rotated with respect to the corresponding brackets 30, and the left and right brackets 30 are rotated with respect to the corresponding rear legs 16. As a specific operation, the left and right handle members 21 are pulled up rearward and upward in a state in which the engagement of the lock member 60 described later with the bracket 30 is released. The rotation axis of the handle member 21 and the armrest 26, the rotation axis of the handle member 21 and the bracket 30, and the rotation axis of the bracket 30 and the rear leg 16 are arranged on a substantially straight line in a side view. After the handle member 21 is pulled up until it becomes, the handle member 21 is pushed down.

  By this operation, the armrest 26 and the side connecting member 28 connected to the handle member 21 swing upward (clockwise in a side view from the left side) with respect to the handle member 21. Accordingly, the front leg 12 connected to the armrest 26 and the side connecting member 28 rotates relative to the armrest 26 and the side connecting member 28 so as to approach the handle member 21. As shown in FIG. 3, the handle member 21 and the front leg 12 approach each other in a side view and are arranged substantially in parallel, and the arrangement position of the handle member 21 is lowered downward. In this way, the stroller 10 is folded so that the external dimensions of the stroller 10 along both the front-rear direction and the up-down direction are reduced.

  By the way, as shown in FIG. 3, when the stroller 10 is folded in the front-rear direction and the up-down direction, the distance between the front end and the rear end of the lower X-shaped link 50 in a side view is longer than that during deployment. That is, with the folding operation in the front-rear direction and the up-down direction, the lower first link member 51a and the lower second link member 51b of the lower X-shaped link 50 are in a direction in which their front ends and rear ends approach each other. Rotate. As a result, as shown in FIG. 4, the distance along the lateral direction between the left and right front legs 12, the left and right rear legs 16, and the left and right handle members 21 is shortened. At this time, as shown in FIG. 4, the rear stay 40 is bent to allow the left and right rear legs 16 to approach each other, and the footrest member 14 is bent to allow the left and right front legs 12 to approach each other. .

  Moreover, the back 1st link material 56a and the back 2nd link material 56b of the back X-shaped link 56 rotate in the direction in which each front end and back ends approach. As a result, the upper portions 21c of the left and right handle members 21 also approach each other in the same manner as the lower portion 21a. The connecting tool 23 slides upward with respect to the handle member 21 as the rear X-shaped link 56 rotates so as not to hinder the rotation of the rear X-shaped link 56.

  In this manner, the stroller 10 is automatically folded in the horizontal direction so that the outer dimensions of the stroller 10 along the horizontal direction are reduced in conjunction with the folding in the front-rear direction and the vertical direction. As shown well in FIG. 4, in the present embodiment, the inverted auxiliary member 52 is fixed to the first link material 51 a of the lower X-shaped link 50. The inversion assisting member 52 becomes a fulcrum together with the left and right rear wheels, and the folded stroller 10 can be inverted on the ground surface.

  On the other hand, when unfolding the stroller 10 from the folded state, an operation reverse to the above-described folding operation may be performed. That is, the handle member 21 of the operation handle 20 may be lifted once and then pushed downward. By such an operation, each component member operates in a direction opposite to that at the time of folding, and the stroller 10 is unfolded from the folded state.

  By the way, the stroller 10 according to the present embodiment is provided with left and right lock members 60 at the left and right lower portions 21a of the operation handle 20. The left and right lock members 60 are engaged with the corresponding brackets 30 and restrict the rotation of the operation handle 20 relative to the brackets 30. Further, a rear stay lock member 70 is provided on the rear stay 40, and the rear stay lock member 70 can regulate the bending of the rear stay 70. When the stroller 10 is folded, before the operation is started, it is necessary to release the engagement between the lock member 60 and the bracket 30 and to release the restriction by the rear stay lock member 70. Hereinafter, the lock member 60 and the rear stay lock member 70 will be described in detail.

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

  First, a method for supporting the lock member 60 will be described mainly with reference to FIGS. 8 and 9. As shown in FIGS. 8 and 9, in the present embodiment, each handle member 21 of the operation handle 20 includes a pipe member 23 and a stopper 24 inserted and fixed to the lower end of the pipe member 23. . As shown in FIG. 1, the gripping handle 22 described above is attached to the upper end of the pipe member 23.

  As shown in FIG. 9, a hollow portion 24 a extending along the longitudinal direction of the handle member 21 is formed in a portion of the stopper 24 inserted into the pipe member 23. And in this hollow part 24a, the guide material 66 which can move along the longitudinal direction of the handle member 21, and the compression spring 68 which is provided above the guide material 65 and presses a guide material downward are provided. ing. That is, the guide member 66 is urged downward in the hollow portion 24a. A fixing pin 69 extending in the lateral direction is fixed to the guide material 66. The fixing pin 69 is fixed to the lock member 60 through an elongated hole 23a (two-dot chain line in FIG. 9) formed in the pipe member 23. In this way, the lock member 60 is slidably supported by the lower portion 21a of the handle member 21 and is urged downward.

  The stroller 10 according to the present embodiment further includes a remote operation mechanism 80 that operates the movement (sliding) of the lock member 60. The remote operation mechanism 80 includes an operation lever (operation means) 81 provided on an upper portion 21c of the handle member 21 of the operation handle 20, and a wire (transmission means) 82 that connects the operation lever 81 and the guide member 66. ,have. The operation lever 81 is supported by the handle member 21 so as to be slidable along the longitudinal direction of the handle member 21. When the operation lever 82 is pulled up, the movement of the operation lever 82 is transmitted to the guide member 66 through the wire 82, and the guide member 66 moves upward in the handle member 21 against the urging force of the compression spring 68. Moving. As the guide member 66 moves, the lock member 60 moves upward. In particular, the operation lever 81 is disposed in the upper portion 21 c of the operation handle 20 and in the vicinity of the grip handle 22. Therefore, the operability of the lock member 60 can be made extremely excellent.

  The remote control mechanism 80 is provided separately for the left and right lock members 60. Therefore, the left and right lock members 60 can be operated separately.

  Next, a method for engaging the lock member 60 and the bracket 30 will be described. As shown in FIGS. 5 to 7, the lock member 60 has an engagement protrusion 61 protruding toward the bracket 30 along the lateral direction. On the other hand, as shown in FIGS. 6 and 7, the bracket 30 is formed with a first engagement recess 31 a and a second engagement recess 31 b that can engage with the engagement protrusion 61. Here, FIG. 6 shows the periphery of the left bracket 30 of the stroller 10 in the unfolded state, and FIG. 7 shows the periphery of the left bracket 30 of the stroller 10 in the folded state.

  As shown in FIG. 6, when the stroller 10 is in the unfolded state, the engagement protrusion 61 of the lock member 60 arranged at the lower position (hereinafter also referred to as the engagement position) of the handle member 21 is the first protrusion of the bracket 30. It comes to engage with the recess 31a. When the engagement protrusion 61 of the lock member 60 and the first recess 31a of the bracket are engaged, the relative movement (relative rotation) between the operation handle 20 and the bracket 30 is restricted. Thereby, the stroller 10 can be maintained in the unfolded state, and the running stability in the unfolded state can be improved.

  However, as described above, the lock member 60 is slidable with respect to the handle member 21. When the lock member 60 moves to an upper position (hereinafter also referred to as a release position) above the engagement position of the handle member 21, the engagement protrusion 61 of the lock member 60 comes out of the first recess 31 a of the bracket 30. That is, by disposing the lock member 60 in the release position, the engagement between the engagement protrusion 61 of the lock member 60 and the first recess 31a of the bracket can be released. In this case, since the operation handle 20 can be rotated with respect to the bracket 30, the above-described folding operation of the stroller 10 becomes possible.

  On the other hand, as shown in FIG. 7, when the stroller 10 is in the folded state, the engagement protrusion 61 of the lock member 60 in the engagement position is engaged with the second recess 31 b of the bracket 30. When the engagement protrusion 61 of the lock member 60 is engaged with the second recess 31b of the bracket, the relative movement (relative rotation) between the operation handle 20 and the bracket 30 is restricted. Thereby, the stroller 10 can be maintained in the folded state. Further, when the lock member 60 is moved to the release position from this state, the stroller 10 can be deployed by rotating the operation handle 20 with respect to the bracket 30.

  As shown in FIGS. 6 and 7, a guide portion 31 c that contacts the engaging protrusion 61 is formed between the first recess 31 a and the second recess 31 b of the bracket 30. As described above, the lock member 60 is urged downward by the compression spring 68 from the release position toward the engagement position. Therefore, the engagement protrusion 61 of the lock member 60 is pressed against the guide portion 31c of the bracket 30 during the folding operation and the unfolding operation. The engaging protrusion 61 moves from the first recess 31a into the second recess 31b while being guided by the guide portion 31c, or moves into the second recess 31b and the first recess 31a. Thereby, at the end of the folding operation and at the end of the unfolding operation, the engagement protrusion 61 of the lock member 60 is automatically engaged with the first recess 31a or the second recess 31b, and the stroller 10 is maintained in the folded state or the unfolded state. Become so.

  Next, the rear stay lock member 70 will be described. As well shown in FIGS. 10 and 11, in the present embodiment, the rear stay lock member 70 is attached to the first stay member 41 of the rear stay 40. The rear stay lock member 70 has a lock member main body 71 formed in a cylindrical shape surrounding the first stay member 41, and a locking pin 72 fixed to the lock member main body 71 and penetrating the first stay member 41. ing. The locking pin 72 passes through the elongated hole 41 a formed in the first stay member 41. Further, the lock member main body 71 is not fixed to the first stay member 41. The rear stay lock member 70 slides relative to the first stay member 41 along the longitudinal direction of the first stay member 41 by the length of the long hole 41 a along the longitudinal direction of the first stay member 41. It is possible.

  Incidentally, as shown in FIGS. 10 and 11, a notch 42 a is formed at the end of the second stay member 42 on the first stay member 41 side. Then, as shown in FIG. 10, when the rear stay 40 is not bent, when the rear stay lock member 70 moves to the second stay member 42 side, the locking pin 72 of the rear stay lock member 70 is moved to the second stay member. The member 42 enters the notch 42a. In this case, the rotation (swing) of the first stay member 41 and the second stay member relative to each other is restricted, and the rear stay 40 is maintained in an unbent state. As described above, when the bending of the rear stay 40 is restricted, the stroller 10 is increased in rigidity, and traveling stability can be improved.

On the other hand, when the rear stay lock member 70 moves to the side away from the second stay member 42,
The locking pin 72 of the rear stay lock member 70 comes out of the notch 42 a of the second stay member 42. In this case, the first stay member 41 and the second stay member 42 can rotate with respect to each other, and the rear stay 40 can be bent.

  10 and 11, the first stay member 41 is provided with a support protrusion 41b. A compression spring 44 is disposed between the support protrusion 41 b and the locking pin 72 of the rear stay lock member 70. For this reason, the rear stay lock member 70 is biased from a bending position at which the rear stay 40 can be bent toward a restriction position where the bending of the rear stay 40 is restricted. When the stroller 10 is unfolded from the folded state, the rear stay 40 extends in the lateral direction, and the locking pin 72 of the rear stay lock member 70 is automatically positioned in the notch 42a of the second stay member 42. It becomes like this. That is, when the stroller 10 is unfolded from the folded state, the rear stay lock member 70 automatically regulates the bending of the rear stay.

  Incidentally, it is necessary to move the rear stay lock member 70 biased toward the restriction position to the bent position when the stroller 10 is deployed from the folded state. The stroller 10 according to the present embodiment is interlocking means for moving the rear stay lock member 70 from the restriction position to the bending position in conjunction with the movement of the left lock member 10 from the engagement position to the release position at the start of the folding operation. 85 is further provided.

  For example, as can be understood from FIGS. 1, 9, and 12, in the present embodiment, the interlocking unit 85 is provided between the lock member 60 provided on the left handle member 21 and the rear stay lock member 70. Yes. As a specific configuration, the interlocking unit 85 includes a tube 86 and a wire 87 that is disposed in the tube 86 and is movable relative to the tube 86.

  As shown in FIG. 9, one end of the tube 86 is fixed to the lower portion 21a (more specifically, the stopper 24) of the left handle member 21. The tube 86 comes out of the stopper 24 and extends to the rear stay 40. As shown in FIG. 12, the other end of the tube 86 is fixed to the back side of the first stay member 41 of the rear stay 40 (the front side of the stroller 10 in the unfolded state). On the other hand, one end of a wire 87 extending in the tube 86 is fixed to a guide member 66 slidably disposed in the left handle member 21. That is, one end of the wire 87 is fixed to the lock member 60 via the guide member 66 (see FIG. 9). The other end of the wire 87 is fixed to the lock member main body 71 of the rear stay lock member 70 (see FIG. 12).

  Therefore, when the guide member 66 is raised and the lock member 60 is moved from the engagement position to the release position, the wire 87 is pulled out to one end side (lock member side) of the tube 86. As the wire 87 moves, the rear stay lock member 70 moves from the restricting position to the bent position. Further, when the guide member 66 descends and the lock member 60 moves from the release position to the engagement position, the wire 87 is pushed out to the other end side (rear stay side) of the tube 86. As the wire 87 moves, the rear stay lock member 70 moves from the bent position to the restricted position. That is, when the stroller 10 is folded, if the remote control mechanism 80 is operated so as to move the left lock member 60 from the engagement position to the release position, the rear stay lock member 70 is automatically moved from the restriction position to the bending position. Will be moved. Therefore, the baby stroller 10 can be started to be folded only by operating the remote control mechanism 80.

  As described above, the rear stay lock member 70 is biased toward the restriction position by the compression spring 44, and the lock member 60 is biased to the engagement position by the compression spring 68. Therefore, when the operator releases his hand from the operation lever 81, the wire 87 is automatically pulled out to the other end side (rear stay side) of the tube 86.

  As described above, in the stroller 10 according to the present embodiment, the handle 20 can be folded in at least one of the front-rear direction and the up-down direction by rotating the handle 20 with respect to the bracket 30, and the rear stay 40 can be bent. Can be folded in the horizontal direction. That is, according to the present embodiment, not only the outer dimensions of the stroller 10 along the vertical direction or the front-rear direction are reduced, but also the outer dimensions of the stroller 10 along the horizontal direction are reduced. Can be folded. Thus, since the stroller 10 can be folded very small, it is very convenient for storage and carrying.

  On the other hand, in addition to the lock member 60 that restricts the rotation of the operation handle 20 with respect to the bracket 30 used when the operator operates the stroller 10, a rear stay lock member 70 that restricts the bending of the rear stay 40 is provided. It has been. Therefore, each component required for folding the stroller 10 in a small size can be sufficiently fixed with respect to each other when the stroller 10 is deployed and used. For this reason, the stroller 10 has excellent running stability.

  In addition, when the lock member 60 is operated when the stroller 10 is folded, the rear stay lock member 70 automatically slides from the restricted position to the bent position in conjunction with the operation of the lock member 60. Therefore, the folding operation of the stroller 10 can be greatly simplified. In addition, it is possible to reliably prevent the user from forgetting to operate the rear stay lock member 70 that is difficult to enter the eyes of the operator. For this reason, breakage of the stroller 10 caused by forgetting to operate the rear stay lock member 70 can be avoided.

  Various modifications can be made to the above-described embodiment within the scope of the present invention.

  For example, in the above-described embodiment, the example in which the operation handle 20 is configured by the pair of handle members 21 formed separately has been described. May be. When a U-shaped handle is employed, the left and right lock members 60 may be operated with a single operating means.

  In the above-described embodiment, the example in which the rear stay lock member 70 is interlocked with the operation of the lock member 60 disposed on the left side is shown, but the present invention is not limited thereto, and the rear stay lock member 70 is disposed on the right side. You may make it interlock | cooperate with operation | movement of the locking member 60. FIG.

  Further, in the above-described embodiment, the example in which the lock member 60 is operated using the remote operation mechanism 80 has been described. However, the present invention is not limited to this, and the operator may directly hold the lock member 60 to operate it. Good.

FIG. 1 is a perspective view showing a stroller in an unfolded state according to an embodiment of the present invention. FIG. 2 is a perspective view showing the baby stroller shown in FIG. 1 from the rear in a developed state. FIG. 3 is a side view showing the stroller shown in FIG. 1 in a folded state. FIG. 4 is a rear view showing the stroller shown in FIG. 1 in a folded state. FIG. 5 is a perspective view showing the vicinity of the right bracket when the stroller shown in FIG. 1 is deployed. FIG. 6 is a perspective view showing the vicinity of the left bracket when the stroller shown in FIG. 1 is deployed. FIG. 6 is a perspective view showing the vicinity of the left bracket when the stroller shown in FIG. 1 is folded. FIG. 8 is a view for explaining a lock member incorporated in the stroller shown in FIG. 1. FIG. 9 is a view for explaining a lock member and a rear stay lock member incorporated in the stroller shown in FIG. 1. FIG. 10 is a view of the rear stay incorporated in the stroller shown in FIG. 1 and shows the rear stay that is not bent together with the rear stay lock member in the restricting position. FIG. 11 is a view of the rear stay incorporated in the stroller shown in FIG. 1 and shows the bent rear stay together with the rear stay lock member. FIG. 11 is a view for explaining a rear stay lock member incorporated in the stroller shown in FIG. 1.

Explanation of symbols

10 Stroller 12 Front leg 16 Rear leg 20 Handle 21a Lower part 21c Upper part 26 Armrest 30 Bracket 30a First part 30b Second part 40 Back stay 50 Lower X-shaped link 51a Lower first link member 51b Lower second link member 60 Lock Member 70 Rear stay lock member 80 Remote operation mechanism 81 Operation means 82 Transmission means 85 Interlocking means

Claims (7)

A foldable stroller,
Left and right rear legs,
Left and right brackets each including a first connecting portion rotatably connected to the left and right rear legs;
An operation handle including left and right lower portions each rotatably connected to a second connection portion different from the first connection portion of the left and right brackets;
A bendable rear stay connecting the left and right rear legs;
An engagement position that is provided on at least one of the left and right lower portions of the handle and engages one of the left and right brackets corresponding to the lower portion to restrict the rotation of the handle with respect to the bracket; A locking member movable between a release position where the engagement with the bracket is released, and
A rear stay locking member that is provided on the rear stay and is movable between a restriction position that restricts bending of the rear stay and a bending position at which the rear stay can be bent;
Provided between the lock member and the rear stay lock member, and moves the rear stay lock member from the restriction position to the bent position in conjunction with the movement of the lock member from the engagement position to the release position. A baby stroller comprising: interlocking means that can be operated. Left and right armrests respectively connected to the left and right rear legs in a rotatable manner;
Left and right front legs respectively rotatably coupled to the left and right armrests;
A first link member connecting the middle part of the left front leg and the second part of the right bracket or the lower right part of the handle; the middle part of the right front leg and the second part of the left bracket; An X-shaped link including a second link member connecting the lower left portion of the handle;
The stroller according to claim 1, wherein the first link member and the second link member are rotatably connected. The lock member is provided on the handle so as to be slidable between the engagement position and the release position,
The stroller according to claim 1 or 2, wherein the rear stay lock member is provided on the rear stay so as to be slidable between the restriction position and the bent position. 2. The lock member is biased from the release position toward the engagement position, and the rear stay lock member is biased from the bent position toward the restriction position. The stroller as described in any one of thru | or 3. An operating means provided in an upper part above the lower part of the handle; and a transmission means for connecting the operating means and the lock member, and releasing the lock member from the engagement position. The stroller according to any one of claims 1 to 4, further comprising a remote control mechanism for operating movement to a position. A left lock member that can be engaged with the left bracket is provided at the lower left portion of the handle, and a right lock member that can be engaged with the right bracket is provided at the lower right portion of the handle,
The stroller according to any one of claims 1 to 5, wherein the interlocking means is provided between any one of the left and right lock members and the rear stay lock member. The interlock means has both ends fixed to the lower part of the handle and the rear stay and the tube, and both ends fixed to the lock member and the rear stay lock member, respectively. The stroller according to claim 1, further comprising a wire.

Images