Baby carriage

Abstract

To suppress operability of a baby carriage from being varied, when switching a position of a handle.SOLUTION: A baby carriage 10 comprises a baby carriage body 11. The baby carriage body 11 includes a body frame 12, a handle 30 and a seat support unit 40. The handle 30 is mounted on the body frame 12 to be swingable in a longitudinal direction. The seat support unit 40 includes a seat support body 41 supported by the handle 30. A position in the longitudinal direction of the seat support body 41 in the body frame 12 can be changed in accordance with swinging of the handle 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a baby carriage. [Background technology]

[0002] Strollers used for taking babies and small children out are widely used. Strollers have a seat support unit that supports a seat on which a baby sits, a main frame that supports the seat support unit, and a handle attached to the main frame. By operating the handle, an operator of the stroller (a parent or guardian, etc.) can adjust the direction of travel of the stroller and also change the inclination of the stroller to get over a step. Patent Document 1 discloses a stroller in which the position of the handle can be switched between a back-pushing position and a front-pushing position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-202982 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a stroller in which the position of the handle can be switched between a rear-pushing position and a forward-pushing position, the distance between the grip of the handle and the center of gravity of the baby on the stroller generally differs when the handle is in the rear-pushing position and when it is in the forward-pushing position. This makes it difficult to operate the stroller when the handle is in the rear-pushing position and when it is in the forward-pushing position, and in one case, the stroller may be difficult to operate.

[0005] The present invention has been made in consideration of the above points, and has an object to suppress changes in the operability of a stroller when the handle position is changed. [Means for solving the problem]

[0006] One embodiment of the present invention relates to the following [1] to

[17] .

[0007] [1] A stroller including a stroller body, The stroller body is A body frame, A handle attached to the main body frame so as to be swingable in the front-rear direction; A seat support unit; Including, The seat support unit includes a seat support supported by the handle, A stroller in which the position of the seat support in the front-rear direction on the main body frame changes in response to the swinging of the handle.

[0008] [2] The stroller described in [1] has a restricting means for restricting forward / rearward movement of the seat support relative to the main body frame.

[0009] [3] The stroller described in [1] or [2], wherein the seat support is rotatable relative to the handle.

[0010] [4] The stroller described in [3] has a restricting means for restricting rotation of the seat support relative to the handle.

[0011] [5] The stroller according to any one of [1] to [4], wherein the seat support body and the handle are connected by a support link member.

[0012] [6] The stroller described in [5] has a restricting means for restricting the rotation of the support link member relative to the seat support body and / or the handle.

[0013] [7] A stroller as described in [5] or [6], wherein the support link member includes a plurality of link elements rotatable relative to each other.

[0014] [8] The seat support unit includes a back support; The stroller according to any one of [1] to [7], wherein the back support is movable together with the seat support.

[0015] [9] [8] The stroller described in [8], wherein the back support is supported by the handle.

[0016]

[10] The stroller described in [8] or [9], wherein the back support is rotatable relative to the handle.

[0017]

[11] The stroller according to any one of [8] to

[10] , wherein the seat support, the back support and the handle are connected by a support link member.

[0018]

[12] The seat support unit includes a top support, The stroller according to any one of [1] to

[11] , wherein the top support is movable together with the seat support.

[0019]

[13] The seat support unit includes a guard material, The stroller according to any one of [1] to

[12] , wherein the guard material is movable together with the seat support.

[0020]

[14] The handle can be pivoted forward and backward between a rear-pushing position and a front-pushing position, The stroller described in any one of [1] to

[13] , wherein the seat support is positioned at a first position when the handle is in the rear pushing position, and is positioned at a second position forward of the first position when the handle is in the forward pushing position.

[0021]

[15] The body frame includes front legs and rear legs, The seat support unit includes a back support connected to the seat support;

[14] A stroller as described in claim 1, wherein, when viewed from the side, a connection portion between the seat support and the back support is located behind the rear legs when the seat support is in the first position, and in front of the rear legs when the seat support is in the second position.

[0022]

[16] The main body frame includes: A front wheel holding member connected to the front leg; a front wheel held by the front wheel holding member so as to be rotatable around a front wheel rotation axis extending in a horizontal direction; A rear wheel holding member connected to the rear leg; a rear wheel held by the rear wheel holding member so as to be rotatable around a rear wheel rotation axis extending in a horizontal direction; Including,

[15] The stroller described in, in which, when viewed from the side, when the seat support is positioned in the second position, the fore-and-aft position of the connection part between the seat support and the back support is at least one-fourth of the fore-and-aft distance between the connection part of the front legs and the front wheel retaining member and the connection part of the rear legs and the rear wheel retaining member, and is forward of the connection part of the rear legs and the rear wheel retaining member.

[0023]

[17] The main body frame includes: A front wheel holding member connected to the front leg; a front wheel held by the front wheel holding member so as to be rotatable around a front wheel rotation axis extending in a horizontal direction; Including, The front wheel holding member is rotatable about a front wheel pivot axis extending in a vertical direction, The stroller described in

[15] or

[16] , wherein the fore-and-aft distance between the first position and the second position is more than twice the horizontal distance between the front wheel swivel axis and the front wheel rotation axis in a plane perpendicular to the front wheel rotation axis. Effect of the Invention

[0024] According to the present invention, it is possible to suppress changes in the operability of the stroller when the handle position is changed. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a diagram for explaining an embodiment of the present invention, and is a side view of a stroller with a handle positioned in a rear pushing position. [Diagram 2] FIG. 2 corresponds to FIG. 1 and is a side view of the stroller with the handle in the facing-pushing position. [Diagram 3] FIG. 3 is a side view showing the stroller in a folded state. [Figure 4] FIG. 4 is a perspective view of the main body frame and the handle. [Diagram 5] FIG. 5 is a perspective view of the seat support unit. [Figure 6] FIG. 6 is a front view of the seat support unit, the handle, and the support link member. [Figure 7] FIG. 7 is a diagram for explaining a modified example of the stroller, and is a side view of the stroller with the handle positioned in the rear pushing position. [Figure 8] FIG. 8 corresponds to FIG. 7 and is a side view of the stroller with the handle in the facing-pushing position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] An embodiment of the present invention will now be described with reference to a specific example shown in the drawings.

[0027] Figures 1 to 6 are diagrams for explaining an embodiment of a stroller 10 according to the present invention. Figures 1 to 3 are side views of the stroller 10. Figures 1 and 2 show the stroller 10 in an unfolded state. Figure 3 shows the stroller 10 in a folded state.

[0028] The stroller 10 of this embodiment includes a stroller body 11. The stroller body 11 has a body frame 12 having front legs 14 and rear legs 16, a handle 30 attached to the body frame 12, and a seat support unit 40. Fig. 4 is a perspective view showing the body frame 12 together with the handle 30. Fig. 5 is a perspective view showing the seat support unit 40. Fig. 6 is a front view showing the seat support unit 40 together with the handle 30. As can be seen from Figs. 4 to 6, the stroller body 11 shown in the figures has a configuration that is generally symmetrical about planes along the front-rear and up-down directions as a whole.

[0029] The handle 30 can swing back and forth relative to the main frame 12. The position of the handle 30 can be changed between a rear-pushing position shown in Fig. 1 and a front-pushing position shown in Fig. 2. When the handle 30 is located in the rear-pushing position, the operator (guardian) grips the handle 30 from behind the baby to steer the stroller 10. At this time, the front legs 14 side of the stroller 10 is the front in the direction of travel. When the handle 30 is located in the front-pushing position, the operator grips the handle 30 from the side facing the baby to steer the stroller 10. At this time, the rear legs 16 side of the stroller 10 is the front in the direction of travel.

[0030] The seat support unit 40 supports a cushion seat on which an infant riding in the stroller 10 sits. The seat support unit 40 includes a seat support member 41 that supports the buttocks of an infant seated on the stroller body 11 from below.

[0031] The stroller 10 of this embodiment is devised to suppress changes in operability of the stroller 10 when the position of the handle 30 is switched. Specifically, the front-to-rear position of the seat support 41 on the main body frame 12 changes in accordance with the swinging of the handle 30. This suppresses changes in operability of the stroller 10 caused by changes in the front-to-rear distance between the gripping portion of the handle 30 (a middle portion 33 described below) and the center of gravity of the baby on the seat support 41 when the handle 30 is switched.

[0032] In this specification, the terms "front", "rear", "up", "down", "front-rear direction" and "up-down direction" for the stroller and its components mean "front", "rear", "up", "down", "front-rear direction" and "up-down direction" based on the baby riding in the stroller and its components in the unfolded state, unless otherwise specified. More specifically, the "front-rear direction" corresponds to the left and right directions on the paper in Figs. 1 and 2. And, unless otherwise specified, "front" is the side to which the riding baby faces, and the left side of the paper in Figs. 1 and 2 is the front side. On the other hand, the "up-down direction" is the direction perpendicular to the running surface S of the stroller. Therefore, when the running surface S is a horizontal plane, the "up-down direction" refers to the vertical direction. Also, the "lateral direction" is the width direction, which is the direction perpendicular to both the "front-rear direction" and the "up-down direction". Furthermore, the "rear side" means the side opposite to the side facing the baby riding in the stroller 10. Therefore, the "rear side" is usually the rear side.

[0033] In this specification, the inner side in the width direction refers to the side closer to the center of the stroller body 11 in the width direction, while the outer side in the width direction refers to the side farther away from the center of the stroller body 11 in the width direction.

[0034] 1 to 6, the stroller body 11 further includes a support link member 60. The support link member 60 moves the seat support member 41 of the seat support unit 40 in conjunction with the handle 30. In addition, in the embodiment shown in Fig. 1 to 6, the stroller body 11 is foldable. Each element constituting the stroller body 11 will be described in more detail below.

[0035] (Main frame) As shown in FIG. 4, the main body frame 12 has a pair of front legs 14 arranged on the left and right, and a pair of rear legs 16 arranged on the left and right. The main body frame 12 further has a first link member L1, a second link member L2, a third link member L3, and a fourth link member L4 arranged on the left and right. The front legs 14, the rear legs 16, and the first to fourth link members L1 to L4 function as link members that configure the main body frame 12 to be foldable and unfoldable. In the illustrated example, the first link member L1 also functions as an armrest. That is, the first link member L1 is configured by the armrest.

[0036] A front wheel 18 and a rear wheel 19 are rotatably provided at the lower ends of the front legs 14 and the rear legs 16, respectively. The front wheels 18 and the rear wheels 19 are held by a front wheel holding member 18a and a rear wheel holding member 19a connected to the lower ends of the front wheels 18 and the rear wheels 19, respectively. The front wheel holding member 18a and the front wheels 18 form a caster, and are rotatable around a front wheel rotation shaft 18b extending in the horizontal direction and are rotatable around a front wheel pivot shaft 18c extending in the vertical direction. The rear wheel holding member 19a and the rear wheels 19 also form a caster, and are rotatable around a rear wheel rotation shaft 19b extending in the horizontal direction and are rotatable around a rear wheel pivot shaft 19c extending in the vertical direction.

[0037] As shown in FIG. 1, the upper end portions of the front legs 14 are rotatably (swingably) connected to the front portion of the first link member L1 arranged on the corresponding side (left or right). The upper end portions of the rear legs 16 are rotatably (swingably) connected to the front portion of the first link member L1 arranged on the corresponding side (left or right). Also, as shown in FIG. 2, the upper portion of the second link member L2 is rotatably (swingably) connected to the rear portion of the first link member L1 arranged on the corresponding side (left or right). The second link member L2 is supported by the rear legs 16 when the main body frame 12 is unfolded.

[0038] As shown in FIG. 4, the third link member L3 is provided between the front leg 14 and the second link member L2. The third link member L3 is connected at its front portion to a middle portion of the front leg 14. The third link member L3 is rotatable relative to the front leg 14 about a rotation axis extending in the width direction. Furthermore, the third link member L3 is connected at its rear portion to a lower portion of the second link member L2. The third link member L3 is rotatable relative to the second link member L2 about a rotation axis extending in the width direction.

[0039] 4, the third link member L3 is connected to the second link member L2 via a shaft member 20 extending in the width direction. The third link member L3 is also connected to the front legs 14 via a shaft member (not shown) extending in the width direction. Therefore, the pair of third link members L3 rotate synchronously with each other relative to the front legs 14 and the second link member L2.

[0040] As shown in FIG. 4, the fourth link member L4 is rotatably connected to the rear leg 16. The lower portion of the fourth link member L4 is rotatably connected to the middle portion of the rear leg 16. The fourth link member L4 is rotatably connected to the second link member L2 and the third link member L3. In the illustrated example, the second link member L2, the third link member L3, and the fourth link member L4 are rotatably connected to each other using the same shaft member 20. This shaft member 20 penetrates the second link member L2, the fourth link member L4, and the third link member L3. With this configuration, the second link member L2, the third link member L3, and the fourth link member L4 are rotatable with each other about an axis that coincides with the central axis of the shaft member 20.

[0041] As shown in Fig. 4, the main frame 12 has, as laterally extending components, a front connector 15 that connects the pair of front legs 14 and a rear connector 17 that connects the pair of rear legs 16. The front connector 15 functions as a footrest. A central connector 21 is provided between the pair of third link members L3. The front connector 15, the rear connector 17 and the central connector 21 can suppress lateral deformation of the stroller 10.

[0042] (handle) As described above, the handle 30 can swing back and forth relative to the main body frame 12. The handle 30 can swing between a rear pushing position (see FIG. 1) and a front pushing position (see FIG. 2). In the illustrated example, the handle 30 is inclined relative to the vertical direction and extends upward backward in the rear pushing position. The handle 30 is inclined relative to the vertical direction and extends upward forward in the front pushing position.

[0043] In the illustrated example, the handle 30 has a handle body 31 pivotally attached to the body frame 12 and a holder 35 provided on the handle body 31 .

[0044] As shown in Fig. 4, the handle body 31 has a generally U-shaped configuration. The handle body 31 is rotatably (swingably) connected to the body frame 12 at both ends of the U-shape. The handle body 31 includes a pair of handle extensions 32 extending generally parallel to each other, and an intermediate portion 33 connecting the pair of handle extensions 32. The pair of handle extensions 32 are disposed on the outer sides of the body frame 12 in the width direction. Each handle extension 32 is rotatably connected to the body frame 12 at its lower end. The intermediate portion 33 is a gripping portion that is gripped by the operator (guardian).

[0045] In the illustrated example, the handle body 31 is rotatably connected to the main body frame 12 by using the shaft member 20. That is, the second link member L2, the third link member L3, the fourth link member L4 and the handle 30 are rotatable relative to each other around the same axis defined by the shaft member 20. The handle 30 can be maintained in the back pressing position shown in FIG. 1 by engaging the holder 35 provided on the handle 30 with the first holding member 36 (see FIG. 2) of the main body frame 12. The handle 30 can be maintained in the face-to-face pressing position shown in FIG. 2 by engaging the holder 35 provided on the handle 30 with the second holding member 37 (see FIG. 1) of the main body frame 12.

[0046] The handle 30 supports the seat support member 41 of the seat support unit 40. This allows the position of the seat support member 41 in the front-rear direction on the main frame 12 to be changed in response to the swinging of the handle 30. In the illustrated example, the handle 30 supports the seat support member 41 via a support link member 60. In Figs. 4 and 5, a part of the support link member 60 is shown by a dashed line. The seat support unit 40 and the support link member 60 will be described in detail later.

[0047] The stroller body 11 having the above configuration can be folded by rotating each component member relative to the other. Specifically, the second link member L2 is once pulled upward and rearward using the handle 30 arranged at the rear pressing position, and then pushed downward, thereby rotating the fourth link member L4 in the clockwise direction in FIG. 1 relative to the rear leg 16. With this operation, the first link member L1 and the third link member L3 rotate in the clockwise direction in FIG. 1 relative to the second link member L2. With this operation, the second link member L2 and the front leg 14 approach each other while maintaining a substantially parallel arrangement in a side view, and the position of the handle 30 relative to the main body frame 12 is lowered. In this manner, the stroller body 11 can be folded as shown in FIG. 3. In the folded state of FIG. 3, the dimensions of the stroller 10 in the front-rear and up-down directions can be reduced. On the other hand, to unfold the stroller body 11 from the folded state, the steps of the folding operation described above can be reversed.

[0048] The stroller body 11 has a state maintaining mechanism (not shown) that restricts the relative rotation of the two components. By operating this state maintaining mechanism, the stroller body 11 can be folded. In the illustrated example, the handle 30 has a remote control device 38 connected to the state maintaining mechanism. As shown in FIG. 1, the remote control device 38 is provided on the middle part 33 of the handle body 31. By operating the remote control device 38, the state maintaining mechanism is operated, and the stroller body 11 can be folded.

[0049] (Seat support unit) The seat support unit 40 supports a cushion seat (not shown) on which an infant sits. As shown in FIG. 5, the seat support unit 40 includes a seat support 41 and a back support 45. The seat support 41 faces the buttocks of an infant riding in the stroller 10. The back support 45 faces the back of the infant. As shown in FIG. 6, the seat support unit 40 is disposed on the inside in the width direction of the handle 30. Furthermore, the seat support unit 40 is disposed on the inside in the width direction of the main body frame 12. More specifically, the seat support unit 40 is disposed between the left and right front legs 14 and rear legs 16.

[0050] As shown in FIG. 5, the seat support 41 has a front frame member 42. The front frame member 42 is a frame member formed in a substantially U-shape. The front frame member 42 has a pair of side portions 43 extending in the front-rear direction, and a front end portion 44 extending in the width direction and connecting the front ends of the pair of side portions 43. The seat support 41 includes a fabric (not shown) that is stretched over the front frame member 42 and defines the seat surface. Alternatively, the seat support 41 includes a seat plate (not shown) that is supported from below by the front frame member 42 and defines the seat surface. The seat plate is a plate-shaped member formed using resin or metal. In addition, when the seat support 41 includes a seat plate, the seat support 41 does not need to include the front frame member 42.

[0051] The back support 45 has a rear frame member 46. The rear frame member 46 is a frame member formed in a substantially U-shape. The rear frame member 46 has a pair of side portions 47 extending in the front-rear direction and / or the up-down direction, and a rear end portion 48 extending in the width direction and connecting the rear ends of the pair of side portions 47. In the illustrated example, the back support member 45 is connected to the seat support member 41. More specifically, the rear frame member 46 extends upward and rearward from the rear end of the front frame member 42. The back support member 45 is rotatable relative to the seat support member 41 around a rotation axis X40 extending in the width direction. More specifically, the front end of the rear frame member 46 is connected to the rear end of the front frame member 42 so as to be rotatable around the rotation axis X40 extending in the width direction. The back support member 45 rotates relative to the seat support member 41, so that the back support member 45 can be reclined relative to the seat support member 41. The back support 45 may further include a fabric or plate-like material supported by the rear frame member 46 .

[0052] The angle of the back support 45 relative to the seat support 41 may be adjusted by a reclining angle adjustment member (not shown). The reclining angle adjustment member may be, for example, a belt member with both ends connected to the frame main body 12. In this case, both ends of the belt member may be connected to, for example, the left and right first link members L1. In this case, the back support 45 may be supported from behind or below by an intermediate portion of the belt member. In this case, the angle of the back support 45 relative to the seat support 41 may be adjustable by adjusting the length of the belt member.

[0053] The angles of the seat support 41 and the back support 45 relative to the second link member L2 may be adjustable. As a result, as shown in Fig. 3, in a side view of the stroller 10 in the folded state, the seat support 41 and the back support 45 can be prevented from protruding in the front-rear direction from the main body frame 12, and the dimension of the stroller 10 in the folded state in the front-rear direction can be reduced. For example, after folding the main body frame 12, the seat support 41 and the back support 45 can be restrained to the main body frame 12 using a string or the like, thereby adjusting the angles of the seat support 41 and the back support 45 relative to the second link member L2.

[0054] 5, the seat support unit 40 further has a pair of side support parts 50 and side frame members 51 extending in the vertical direction. The side support parts 50 are located above the side parts 47 of the back support 45. In the illustrated example, the lower ends of the side support parts 50 are fixed to the seat support 41.

[0055] The side frame material 51 is a frame material formed in a substantially U-shape. Both ends of the side frame material 51 are connected to the upper ends of the side support parts 50. The side frame material 51 is connected to the side support parts 50 so as to be rotatable about a rotation axis parallel to the width direction.

[0056] A pair of connecting frame members 52 is provided between the side frame member 51 and the rear frame member 46. The pair of connecting frame members 52 are arranged spaced apart from each other in the width direction. The connecting frame member 52 is rotatable with respect to the rear frame member 46 and the side frame member 51. The connecting frame member 52 functions as a link member, and causes one of the rear frame member 46 and the side frame member 51 to swing in conjunction with the swinging of the other. The connecting frame member 52 also forms a wall portion between the rear portion of the rear frame member 46 and the rear portion of the side frame member 51 that is located behind the head of the infant when the back support member 45 is lying down, and forms a wall portion that is located behind the head of the infant when the back support member 45 is upright.

[0057] The seat support unit 40 also has a pair of guard supports 54 connected to the left and right side portions of the seat support 41, and a guard material 55 extending between the pair of guard supports 54. The left and right ends of the guard material 55 are detachably connected to the left and right guard supports 54, respectively. The seat support unit 40 also has a hood support 57 that supports a hood cloth (not shown). The hood support 57 includes a pair of hood support members 58 fixed to both ends of the side frame member 51, respectively, and a hood bone 59 extending between the pair of hood support members 58. The hood cloth is attached to the hood bone 59 to form a hood. The hood covers an infant seated on the seat support unit 40 from above, providing an environment that is shaded from the sun for the infant.

[0058] (Support link member) The handle 30 supports the seat support 41 via the support link member 60. Since the seat support 41 is supported by the handle 30, the seat support 41 moves in conjunction with the swinging of the handle 30. More specifically, as can be understood by comparing Figs. 1 and 2, the support link member 60 causes the position of the seat support 41 in the front-rear direction on the main body frame 12 to change in accordance with the swinging of the handle 30. In the illustrated example, the seat support 41 is connected to the main body frame 12 via the support link member 60 and the handle 30. The seat support 41 is not supported by the main body frame 12.

[0059] In the example shown in Fig. 6, the stroller body 11 includes a pair of support link members 60. The pair of support link members 60 are arranged on the outer side in the width direction of the seat support 41 and on the inner side in the width direction of the handle 30. In the example shown in the figure, each support link member 60 is arranged on the outer side in the width direction of the seat support 41 and on the inner side in the width direction of the main body frame 12. Each support link member 60 is connected to the side portion 43 of the seat support 41 and the handle extension portion 32 located on the corresponding side.

[0060] In the illustrated example, each support link member 60 includes a single link element 61. The link element 61 extends in the up-down direction as a whole. The link element 61 is connected at its upper part to the middle part of the handle extension part 32. The link element 61 is rotatable with respect to the handle extension part 32 around a rotation axis X61a extending in the width direction. Furthermore, the link element 61 is connected at its lower part to the side part 43 of the seat support 41. The link element 61 is rotatable with respect to the seat support 41 around a rotation axis X61b extending in the width direction. In the illustrated example, the rotation axis X61b coincides with the rotation axis X40, but is not limited thereto. The rotation axis X61b may be located forward of the rotation axis X40 or rearward of the rotation axis X40.

[0061] In this way, since the link element 61 is rotatable with respect to the handle 30, the position of the seat support 41 in the front-rear direction on the main frame 12 can be adjusted. More specifically, by rotating the link element 61 with respect to the handle 30, the amount of movement of the seat support 41 in the front-rear direction can be adjusted to be larger or smaller than the amount of movement of the connection position (the position through which the rotation axis X61a passes) between the handle 30 and the support link member 60 in the front-rear direction. As a result, the degree of freedom of the arrangement of the seat support 41 in the front-rear direction when the handle 30 is arranged at the back pressing position and the face-to-face pressing position is improved. In other words, when the handle 30 is arranged at the back pressing position and the face-to-face pressing position, the position of the seat support 41 can be finely adjusted as necessary. Therefore, when the handle 30 is arranged at the back pressing position, it is easy to position the seat support 41 at the first position shown in FIG. 1. Also, when the handle 30 is arranged at the face-to-face pressing position, it is easy to position the seat support 41 at the second position shown in FIG. 2. In addition, the seat support 41 in the second position is shown by a broken line in Fig. 1. As can be easily understood from Fig. 1, the second position is located further forward than the first position.

[0062] Furthermore, since the link element 61 is rotatable relative to the handle 30 and / or the seat support 41, the seat support 41 is rotatable relative to the handle 30. This makes it possible to suppress a change in the angle of the seat support 41 relative to the running surface S caused by swinging the handle 30. Therefore, whether the handle 30 is disposed in the back-pushing position or the face-to-face pushing position, the seat support 41 can be made approximately horizontal, and an infant on the seat support 41 can be appropriately supported.

[0063] In the illustrated example, the stroller body 11 has a first restricting means 62 that restricts the movement of the seat support 41 in the front-rear direction relative to the body frame 12. The first restricting means 62 may restrict the rotation of the link element 61 relative to the handle 30. In this case, the first restricting means 62 may be a locking mechanism that prevents the link element 61 from rotating relative to the handle 30. By using this first restricting means 62, when the handle 30 is placed in the back-pushing position, the seat support 41 can be stably maintained in the first position (see FIG. 1). Also, by using this first restricting means 62, when the handle 30 is placed in the face-to-face pushing position, the seat support 41 can be stably maintained in the second position (see FIG. 2) forward of the first position.

[0064] In the illustrated example, the stroller body 11 has a second restricting means 63 that restricts the rotation of the link element 61 relative to the seat support 41. The second restricting means 63 may be a locking mechanism that prevents the link element 61 from rotating relative to the seat support 41. The second restricting means 63 makes it possible to stably maintain the angle of the seat support 41 relative to the link element 61 at a desired angle. Therefore, the second restricting means 63 makes it possible to stably maintain the angle of the seat support 41 relative to the running surface S at a desired angle.

[0065] In this way, by restricting the rotation of the seat support 41 relative to the handle 30 by the first restricting means 62 and / or the second restricting means 63, the seat support 41 can be made approximately horizontal with respect to the running surface S whether the handle 30 is positioned in the back pushing position or the face-to-face pushing position. This makes it possible to properly support an infant on the seat support 41 whether the handle 30 is positioned in the back pushing position or the face-to-face pushing position.

[0066] In such a stroller body 11, the action of the support link member 60 and the restricting means 62, 63 when changing the position of the handle 30 will be described. First, the case of moving the handle 30 from the back pushing position to the face-to-face pushing position will be described. When the handle 30 is swung from the back pushing position to the face-to-face pushing position, the link element 61 moves forward together with the handle 30. Furthermore, the link element 61 rotates relative to the handle 30 as the handle 30 swings due to the action of gravity. As a result, the seat support 41 automatically moves forward as the handle 30 swings. After the handle 30 is placed in the face-to-face pushing position, the link element 61 is rotated relative to the handle 30 as necessary, and the position of the seat support 41 is adjusted to the second position. Thereafter, the first restricting means 62 restricts the rotation of the link element 61 relative to the handle 30, and the seat support 41 is maintained in the second position. Furthermore, the seat support 41 is rotated relative to the link element 61 as necessary, and the seat support 41 is made approximately parallel to the running surface S. Thereafter, the second restricting means 63 restricts the rotation of the seat support 41 relative to the link element 61, and the seat support 41 is maintained substantially parallel to the running surface S.

[0067] Next, a case where the handle 30 is moved from the front-pushing position to the back-pushing position will be described. When the handle 30 is swung from the front-pushing position to the back-pushing position, the link element 61 moves backward together with the handle 30. Furthermore, the link element 61 rotates relative to the handle 30 as the handle 30 swings due to the action of gravity. As a result, the seat support 41 automatically moves backward as the handle 30 swings. After the handle 30 is placed at the front-pushing position, the link element 61 is rotated relative to the handle 30 as necessary, and the position of the seat support 41 is adjusted to the first position. Thereafter, the first restricting means 62 restricts the rotation of the link element 61 relative to the handle 30, and the seat support 41 is maintained at the first position. Furthermore, the seat support 41 is rotated relative to the link element 61 as necessary, and the seat support 41 is made approximately parallel to the running surface S. Thereafter, the second restricting means 63 restricts the rotation of the seat support 41 relative to the link element 61, and the seat support 41 is maintained substantially parallel to the running surface S.

[0068] In this way, the front-to-rear position of the seat support 41 on the main frame 12 changes in response to the swinging of the handle 30, and this also changes the front-to-rear position of the center of gravity of the baby supported by the seat support 41. This limits the change in the front-to-rear distance between the gripping portion (middle portion 33) of the handle 30 and the center of gravity of the baby when the position of the handle 30 is changed, thereby limiting changes in the operability of the stroller 10.

[0069] As described above, in the illustrated example, the back support 45, the guard material 55, and the hood support 57 are connected to the seat support 41. Therefore, when the handle 30 is swung in the front-rear direction, the front-rear positions of the back support 45, the guard material 55, and the hood support 57 relative to the main body frame 12 automatically change. In other words, when the handle 30 is swung forward, the back support 45, the guard material 55, and the hood support 57 move forward together with the seat support 41. Also, when the handle 30 is swung backward, the back support 45, the guard material 55, and the hood support 57 move backward together with the seat support 41. Therefore, even if the front-rear position of the seat support 41 relative to the main body frame 12 changes, the positional relationship between the seat support 41 and the back support 45, the guard material 55, and the hood support 57 is maintained. Therefore, the seat support 41 moves relative to the main frame 12, which does not change the dimensions of the living space of the seat support unit 40, and does not change the positions of the guard material 55 and the hood relative to the baby on the seat support 41. This prevents the change in the ride comfort of the stroller before and after changing the position of the seat support 41 in the front-rear direction. Even if the position of the seat support 41 in the front-rear direction is changed, a sunshade environment can be appropriately provided. Furthermore, the positions of the back support 45, the guard material 55, and the hood support 57 in the front-rear direction on the main frame 12 change in response to the swinging of the handle 30, which prevents the change in the distance in the front-rear direction between the grip part (middle part 33) of the handle 30 and the center of gravity of the seat support unit 40 when the position of the handle 30 is changed, and the change in the operability of the stroller 10 is further effectively prevented.

[0070] The first position, the second position, and the distance D1 in the front-rear direction between the first position and the second position (see FIG. 1) can be adjusted, for example, by adjusting the angle between the handle 30 and the link element 61 when the handle 30 is disposed at the back-pushing position, and the angle between the handle 30 and the link element 61 when the handle 30 is disposed at the face-to-face pushing position. The first position, the second position, and the distance D1 can also be adjusted by adjusting the distance between the connection position of the link element 61 with the handle 30 and the seat support 41 (the distance between the rotation axes X61a and X61b). The first position, the second position, and the distance D1 can also be adjusted by adjusting the connection position between the handle 30 and the link element 61 (the position of the rotation axis X61a on the handle 30). The first position, the second position, and the distance D1 can also be adjusted by adjusting the swing amount (swing angle) when the handle 30 is moved from the back-pushing position to the face-to-face pushing position.

[0071] The first and second positions may be determined as follows. That is, the first and second positions may be determined so that the connection portion (rotation axis X40 in the illustrated example) between the seat support 41 and the back support 45 is located behind the rear legs 16 when the handle 30 is placed in the rear-facing pushing position, and is located in front of the rear legs 16 when the handle 30 is placed in the face-to-face pushing position. This effectively prevents a change in the front-to-rear distance between the center of gravity of the baby on the stroller 10 and the grip portion 33 of the handle 30 when the position of the handle 30 is switched, and effectively prevents a change in the operability of the stroller 10.

[0072] Furthermore, the second position may be determined as follows: In other words, the second position may be determined so that, in a side view of the stroller body 11, the connection portion (the rotation axis X40 in the illustrated example) of the seat support 41 and the back support 45 when the seat support 41 is disposed at the second position is at least one-fourth of the front-rear distance D2 (see FIG. 2) between the connection portion of the rear leg 16 and the rear wheel holding member 19a and the connection portion of the front leg 14 and the front wheel holding member 18a, and is located forward of the connection portion of the rear leg 16 and the rear wheel holding member 19a (in other words, the front-rear distance D3 (see FIG. 2) between the rotation axis X40 and the connection portion of the rear leg 16 and the rear wheel holding member 19a when the handle 30 is disposed at the facing pushing position is at least one-fourth of the above-mentioned distance D2). This more effectively prevents changes in the fore-and-aft distance between the center of gravity of the baby on the stroller 10 and the grip portion 33 of the handle 30 when the position of the handle 30 is changed, and more effectively prevents changes in the maneuverability of the stroller 10.

[0073] Also, the distance D1 may be determined to be at least twice the horizontal distance D4 (see FIG. 1) between the front wheel pivot shaft 18c and the front wheel pivot shaft 18b in a plane perpendicular to the front wheel pivot shaft 18b. When the front wheel holding member 18a pivots around the front wheel pivot shaft 18c, the position of the front wheel pivot shaft 18b relative to the front wheel pivot shaft 18c changes between the case where the stroller 10 is operated with the handle 30 in the rear-pushing position and the case where the stroller 10 is operated with the handle 30 in the front-pushing position, as shown in FIG. 1 and FIG. 2. In the illustrated example, when the stroller 10 is operated with the handle 30 in the rear-pushing position, the front wheel pivot shaft 18b is located behind the front wheel pivot shaft 18c. On the other hand, when the stroller 10 is operated with the handle 30 in the front-pushing position, the front wheel pivot shaft 18b is located in front of the front wheel pivot shaft 18c. When the operator of the stroller 10 operates the stroller 10 with the handle 30 in the facing-pushing position, the operator operates the stroller 10 with the front wheel rotation shaft 18b as a fulcrum. In such a stroller in which the front wheels 18 rotate, if the position of the seat support 41 in the front-rear direction does not change with the swinging of the handle 30, the distance between the front wheel rotation shaft 18b and the seat support 41 in the front-rear direction when the operator operates the stroller with the handle 30 in the facing-pushing position is twice as large as the distance D4 described above, compared to the distance between the front wheel rotation shaft 18b and the seat support 41 in the front-rear direction when the operator operates the stroller with the handle 30 in the facing-pushing position. Therefore, in the illustrated example, the distance D1 is set to be twice or more the distance D4 described above, thereby canceling out the change in the distance between the front wheel rotation shaft 18b and the seat support 41 in the front-rear direction caused by the rotation of the front wheels 18. This makes it possible to suppress the change in the operability of the stroller 10 caused by the rotation of the front wheels 18.

[0074] <Modification> Next, a modified example of this embodiment will be described with reference to Figures 7 and 8. In Figures 7 and 8, the same parts as those in the embodiment shown in Figures 1 to 6 are given the same reference numerals and detailed description will be omitted.

[0075] The support link member 60 may include multiple link elements and may support the back support 45 as well as the seat support 41.

[0076] 7 and 8, the support link member 60 includes first to third link elements 65 to 67. The first link element 65 extends in the front-rear direction as a whole. The first link element 65 is connected at its middle portion to the middle portion of the handle extension portion 32. The first link element 65 is rotatable relative to the handle extension portion 32 about a rotation axis X65 extending in the width direction.

[0077] The second link element 66 extends in the up-down direction as a whole. An upper portion of the second link element 66 is connected to a front portion of the first link element 65. The second link element 66 is rotatable relative to the first link element 65 about a rotation axis X66a extending in the width direction. A lower portion of the second link element 66 is connected to a side portion 43 of the seat support 41. The second link element 66 is rotatable relative to the seat support 41 about a rotation axis X66b extending in the width direction.

[0078] The third link element 67 extends in the up-down direction as a whole. An upper portion of the third link element 67 is connected to a rear portion of the first link element 65. The third link element 67 is rotatable relative to the first link element 65 about a rotation axis X67a extending in the width direction. A lower portion of the third link element 67 is connected to a side portion 47 of the back support 45. The third link element 67 is rotatable relative to the back support 45 about a rotation axis X67b extending in the width direction.

[0079] In this modified example, the stroller body 11 may also have a first restricting means 62 for restricting the movement of the seat support 41 relative to the body frame 12. The first restricting means 62 may restrict the rotation of at least one of the link elements 65-67 relative to the handle 30. In the example shown in Figs. 7 and 8, the first restricting means 62 is a locking mechanism that prevents the first link element 65 from rotating relative to the handle 30 and prevents the second link element 66 and the third link element 67 from rotating relative to the first link element 65. By using this first restricting means 62, when the handle 30 is placed in the back-pushing position, the seat support 41 can be stably maintained in the first position (see Fig. 7). Also, by using this first restricting means 62, when the handle 30 is placed in the face-to-face pushing position, the seat support 41 can be stably maintained in the second position (see Fig. 8) forward of the first position.

[0080] Also in this modified example, the stroller body 11 may have a second restricting means 63 that restricts the rotation of the second link element 66 relative to the seat support 41. The second restricting means 63 may be a locking mechanism that prevents the second link element 66 from rotating relative to the seat support 41. The second restricting means 63 makes it possible to maintain the angle of the seat support 41 relative to the second link element 66 at a desired angle. Therefore, the second restricting means 63 makes it possible to maintain the angle of the seat support 41 relative to the running surface S at a desired angle.

[0081] In this modified example, the stroller body 11 may have a third restricting means 64 for restricting the rotation of the support link member 60 relative to the back support 45. The third restricting means 64 may be a locking mechanism for preventing the third link element 67 from rotating relative to the back support 45. The third restricting means 64 can maintain the angle of the back support 45 relative to the third link element 67 at a desired angle. Therefore, the third restricting means 64 can maintain the angle of the back support 45 relative to the running surface S at a desired angle, and as a result, the third restricting means 64 can maintain the angle of the seat support 41 relative to the running surface S at a desired angle. In other words, the angle of the seat support 41 relative to the running surface S may be maintained at a desired angle by the third restricting means 64, not by the second restricting means 63.

[0082] The operation of the support link member 60 and the restricting means 62-64 when switching the position of the handle 30 in the modified example shown in Figs. 7 and 8 will be described. First, the case of moving the handle 30 from the back pressing position to the front pressing position will be described. When the handle 30 is swung from the back pressing position to the front pressing position, the link elements 65-67 move forward together with the handle 30. Furthermore, the link elements 65-67 rotate relative to the handle 30 as the handle 30 swings due to the action of gravity. Furthermore, the link elements 66, 67 rotate relative to the first link element 66 as the handle 30 swings due to the action of gravity. As a result, the seat support 41 automatically moves forward as the handle 30 swings. After the handle 30 is placed in the front pressing position, the first link element 65 is rotated relative to the handle 30 as necessary, and the link elements 66, 67 are rotated relative to the first link element 65 to adjust the position of the seat support 41 to the second position. Thereafter, the first restricting means 62 restricts the rotation of the first link element 65 relative to the handle 30 and the rotation of the link elements 66, 67 relative to the first link element 65, thereby maintaining the seat support 41 in the second position. Furthermore, as necessary, the seat support 41 is rotated relative to the second link element 66 to make the seat support 41 approximately parallel to the running surface S. Thereafter, the second restricting means 63 restricts the rotation of the seat support 41 relative to the second link element 66, or the third restricting means 64 restricts the rotation of the back support 45 relative to the third link element 67, thereby maintaining the seat support 41 approximately parallel to the running surface S.

[0083] Next, a case where the handle 30 is moved from the front-to-back pressing position to the back-to-back pressing position will be described. When the handle 30 is swung from the front-to-back pressing position to the back-to-back pressing position, the link elements 65-67 move backward together with the handle 30. Furthermore, the link elements 65-67 rotate relative to the handle 30 as the handle 30 swings due to the action of gravity. Furthermore, the link elements 66, 67 rotate relative to the first link element 66 as the handle 30 swings. As a result, the seat support 41 automatically moves backward as the handle 30 swings. After the handle 30 is placed in the front-to-back pressing position, the first link element 65 is rotated relative to the handle 30 as necessary, and the link elements 66, 67 are rotated relative to the first link element 65 to adjust the position of the seat support 41 to the first position. Thereafter, the first restricting means 62 restricts the rotation of the first link element 65 relative to the handle 30 and the rotation of the link elements 66, 67 relative to the first link element 65, thereby maintaining the seat support 41 in the first position. Furthermore, as necessary, the seat support 41 is rotated relative to the second link element 66 to make the seat support 41 approximately parallel to the running surface S. Thereafter, the second restricting means 63 restricts the rotation of the seat support 41 relative to the second link element 66, or the third restricting means 64 restricts the rotation of the back support 45 relative to the third link element 67, thereby maintaining the seat support 41 approximately parallel to the running surface S.

[0084] 7 and 8, the front-to-rear position of the seat support 41 on the main frame 12 can be changed in response to the swinging of the handle 30, and the front-to-rear position of the center of gravity of the baby supported by the seat support 41 can be changed. As a result, the change in the front-to-rear distance between the gripping portion (middle portion 33) of the handle 30 and the center of gravity of the baby when the position of the handle 30 is changed is suppressed, and the change in the operability of the stroller 10 is suppressed.

[0085] <Other Modifications> In the above example, the seat support 41 is connected to the handle 60 via the support link member 60 that is rotatable relative to the handle 30, but this is not limited thereto. The seat support 41 may be connected to the handle 60 via a support member that is not rotatable relative to the handle 30. In this case, it is preferable that the seat support 41 is rotatable relative to the support member. This makes it possible to suppress a change in the angle of the seat support 41 relative to the running surface S caused by swinging the handle 30. Therefore, whether the handle 30 is disposed in the back pushing position or the face-to-face pushing position, the baby on the seat support 41 can be appropriately supported.

[0086] The stroller 10 of the embodiment and the modified example thereof described above includes a stroller body 11. The stroller body 11 includes a body frame 12, a handle 30, and a seat support unit 40. The handle 30 is attached to the body frame 12 so as to be able to swing in the front-rear direction. The seat support unit 40 includes a seat support 41 supported by the handle 30. The front-rear position of the seat support 41 on the body frame 12 changes in response to the swinging of the handle 30. With this stroller 10, it is possible to suppress changes in the front-rear distance between the center of gravity of the baby on the stroller 10 and the grip portion 33 of the handle 30 when the position of the handle 30 is changed, and it is possible to suppress changes in the operability of the stroller 10.

[0087] The embodiment and its modified example described above have the restricting means 62 that restricts the movement of the seat support 41 in the front-rear direction relative to the main body frame 12. This allows the seat support 41 to be stably maintained at a predetermined position relative to the main body frame 12.

[0088] In the embodiment and the modified example thereof described above, the seat support 41 is rotatable with respect to the handle 30. This allows the angle of the seat support 41 with respect to the running surface S to be adjusted to a desired angle. Therefore, even if the handle 30 is swung, the seat support 41 can be made approximately parallel to the running surface S.

[0089] In the embodiment and the modified example thereof described above, there is provided a restricting means for restricting the rotation of the seat support 41 relative to the handlebars. This allows the angle of the seat support 41 relative to the running surface S to be maintained at a desired angle.

[0090] In the embodiment and its modified example described above, the seat support 41 and the handle 30 are connected by a support link member 60. The stroller body 11 has restriction means 62, 63 that restrict the rotation of the support link member 60 relative to the seat support member 41 and / or the handle 30. In the modified example described above, the support link member 60 has a plurality of link elements 65-67 that are rotatable relative to one another.

[0091] In the embodiment and its modified example described above, the seat support unit 40 includes the back support 45. The back support 45 is movable together with the seat support 41. With such a stroller 10, even if the position of the seat support 41 in the front-rear direction relative to the main frame 12 changes, the positional relationship between the seat support 41 and the back support 45 is maintained. Therefore, the change in the riding comfort of the stroller 10 before and after changing the position of the seat support 41 in the front-rear direction is suppressed. In addition, when the position of the handle 30 is switched, the change in the distance in the front-rear direction between the center of gravity of the seat support unit 40 and the grip part 33 of the handle 30 can be effectively suppressed, and the change in the operability of the stroller 10 can be effectively suppressed.

[0092] In the modified example described above, the back support 45 is supported by the handle 30. The back support 45 is rotatable relative to the handle 30. As a result, even if the handle 30 is swung, the angle of the back support 45 relative to the seat support 41 can be maintained. The seat support 41 and the back support 45 are connected to the handle 30 by a support link member 60.

[0093] In the embodiment and its modified example described above, the seat support unit 40 includes a canopy support 57. The canopy support 57 is movable together with the seat support 41. With this stroller 10, even if the position of the seat support 41 in the front-rear direction relative to the main frame 12 changes, the positional relationship between the seat support 41 and the canopy support 57 (and therefore the canopy) is maintained. Even if the position of the seat support 41 in the front-rear direction changes, a sunshade environment can be appropriately provided for the baby on the seat support unit 40. In addition, when the position of the handle 30 is switched, the change in the distance in the front-rear direction between the center of gravity of the seat support unit 40 and the grip part 33 of the handle 30 can be effectively suppressed, and the change in the operability of the stroller 10 can be effectively suppressed.

[0094] In the embodiment and its modified example described above, the seat support unit 40 includes a guard material 55. The guard material 55 is movable together with the seat support 41. With such a stroller 10, even if the position of the seat support 41 in the front-rear direction relative to the main frame 12 changes, the positional relationship between the seat support 41 and the guard material 55 is maintained. Therefore, even if the position of the seat support 41 in the front-rear direction changes, the baby on the seat support unit 40 can be appropriately guarded by the guard material 55.

[0095] In the embodiment and its modified example described above, the handle 30 can swing in the front-rear direction between a rear-pushing position and a front-facing pushing position. The seat support 41 is positioned at a first position when the handle 30 is in the rear-pushing position, and is positioned at a second position forward of the first position when the handle 30 is in the front-facing pushing position. With this stroller 10, when the position of the handle 30 is changed, it is possible to effectively prevent a change in the front-rear distance between the center of gravity of the baby on the stroller 10 and the grip portion 33 of the handle 30, and it is possible to effectively prevent a change in the operability of the stroller 10.

[0096] In the embodiment and its modified example described above, the main body frame 12 includes the front legs 14 and the rear legs 16. The seat support unit 40 includes a back support 45 connected to the seat support 41. In a side view of the stroller main body 11, the connection portion between the seat support 41 and the back support 45 is behind the rear legs 16 when the seat support 41 is in the first position, and is in front of the rear legs 16 when the seat support 41 is in the second position. With this stroller 10, when the position of the handle 30 is changed, it is possible to effectively prevent a change in the distance in the front-rear direction between the center of gravity of the baby on the stroller 10 and the grip portion 33 of the handle 30, and it is possible to effectively prevent a change in the operability of the stroller 10.

[0097] In the embodiment and its modified example described above, the main body frame 12 includes a front wheel holding member 18a, a front wheel 18, a rear wheel holding member 19a, and a rear wheel 19. The front wheel holding member 18a is connected to the front leg 14. The front wheel 18 is held by the front wheel holding member 18a so as to be rotatable around a front wheel rotation shaft 18b extending in the horizontal direction. The rear wheel holding member 19a is connected to the rear leg 16. The rear wheel 19 is held by the rear wheel holding member 19a so as to be rotatable around a rear wheel rotation shaft 19b extending in the horizontal direction. In a side view of the stroller body 11, when the seat support 41 is arranged in the second position, the front-to-rear position of the connection part of the seat support 41 and the back support 45 is more than one-fourth of the front-to-rear distance D2 between the connection part of the front legs 14 and the front wheel holding member 18a and the connection part of the rear legs 16 and the rear wheel holding member 19a, and is forward of the connection part of the rear legs 16 and the rear wheel holding member 19a. With this stroller 10, when the position of the handle 30 is changed, it is possible to effectively prevent the change in the front-to-rear distance between the center of gravity of the baby on the stroller 10 and the grip part 33 of the handle 30, and to effectively prevent the change in the operability of the stroller 10.

[0098] In the embodiment and its modified example described above, the main body frame 12 includes a front wheel holding member 18a, a front wheel 18, a rear wheel holding member 19a, and a rear wheel 19. The front wheel holding member 18a is connected to the front leg 14. The front wheel 18 is held by the front wheel holding member 18a so as to be rotatable around a front wheel rotation shaft 18b extending in the horizontal direction. The front wheel holding member 18a can turn around a front wheel pivot shaft 18c extending in the vertical direction. The front-rear distance D1 between the first position and the second position is at least twice the horizontal distance D4 between the front wheel pivot shaft 18c and the front wheel pivot shaft 18b in a plane perpendicular to the front wheel pivot shaft 18b. With this stroller 10, it is possible to cancel the change in the front-rear distance between the front wheel pivot shaft 18b and the center of gravity of the baby on the seat support 41 caused by the front wheel 18 turning. This makes it possible to suppress changes in the maneuverability of the stroller 10 caused by the turning of the front wheels 18.

[0099] Although several modifications to the above-mentioned embodiment have been described, it is of course possible to apply a plurality of modifications in appropriate combination. [Explanation of symbols]

[0100] 10. Pram 11 Baby carriage body 12 Main frame 14 Front legs 16 Hind Legs 18 Front wheel 18b Front wheel axle 18c Front wheel pivot 19 Rear wheel 19b Rear wheel pivot 19c Rear wheel rotation axis 20 Shaft member 30 Handle 32 Handle extension 40 Seat support unit 41 Seat support 45 Back support 60 Support link member 61 Link elements 62 First Control Measure 63 Secondary Control Measures 64 Third Control Measure 65 First link element 66 Second link element 67 Third link element L1 First link member L2 Second link member L3 Third link member L4 Fourth link member

Claims

1. A stroller including a stroller body, The stroller body is A body frame, A handle attached to the main body frame so as to be swingable in the front-rear direction; A seat support unit; Including, The seat support unit includes a seat support supported by the handle, A stroller in which the position of the seat support in the front-rear direction on the main body frame changes in response to the swinging of the handle.

2. 2. The stroller according to claim 1, further comprising a restricting means for restricting movement of the seat support relative to the main body frame in the front-rear direction.

3. 2. A pram as claimed in claim 1, wherein the seat support is pivotable relative to the handle.

4. 4. The stroller according to claim 3, further comprising restricting means for restricting rotation of said seat support relative to said handle.

5. 2. The stroller of claim 1, wherein the seat support and the handle are connected by a support link member.

6. 6. The stroller according to claim 5, further comprising restricting means for restricting rotation of the support link member relative to the seat support body and / or the handle.

7. 6. A stroller as claimed in claim 5, wherein the support link member includes a plurality of link elements which are pivotable relative to one another.

8. The seat support unit includes a back support; 2. A stroller as claimed in claim 1, wherein the back support is moveable with the seat support.

9. 9. A pram as claimed in claim 8, wherein the back support is supported by the handle.

10. 9. A pram as claimed in claim 8, wherein the back support is pivotable relative to the handle.

11. 9. A pram as claimed in claim 8, wherein the seat support, back support and handle are connected by support link members.

12. The seat support unit includes a top support, 2. A stroller as claimed in claim 1, wherein the top support is movable together with the seat support.

13. The seat support unit includes a guard material, 2. A stroller as claimed in claim 1, wherein the guard material is moveable with the seat support.

14. The handle can be pivoted forward and backward between a rear-pushing position and a front-pushing position, 2. The stroller of claim 1, wherein the seat support is positioned at a first position when the handle is in the rear-pushing position, and is positioned at a second position forward of the first position when the handle is in the forward-pushing position.

15. The body frame includes front legs and rear legs, The seat support unit includes a back support connected to the seat support; 15. The stroller of claim 14, wherein, in a side view, a connection portion between the seat support and the back support is located behind the rear legs when the seat support is in the first position, and in front of the rear legs when the seat support is in the second position.

16. The main body frame includes: A front wheel holding member connected to the front leg; a front wheel held by the front wheel holding member so as to be rotatable around a front wheel rotation axis extending in a horizontal direction; A rear wheel holding member connected to the rear leg; a rear wheel held by the rear wheel holding member so as to be rotatable around a rear wheel rotation axis extending in a horizontal direction; Including, 16. A stroller as described in claim 15, wherein, when viewed from the side, the fore-and-aft position of the connection between the seat support and the back support when the seat support is positioned in the second position is at least a quarter of the fore-and-aft distance between the connection between the front legs and the front wheel retaining member and the connection between the rear legs and the rear wheel retaining member, and is forward of the connection between the rear legs and the rear wheel retaining member.

17. The main body frame includes: A front wheel holding member connected to the front leg; a front wheel held by the front wheel holding member so as to be rotatable around a front wheel rotation axis extending in a horizontal direction; Including, The front wheel holding member is rotatable about a front wheel pivot axis extending in a vertical direction, 16. The stroller of claim 15, wherein the longitudinal distance between the first position and the second position is at least twice the horizontal distance between the front wheel pivot axis and the front wheel rotation axis in a plane perpendicular to the front wheel rotation axis.

Images