Child stroller

Abstract

Disclosed in the present invention is a child stroller, which comprises a stroller frame having an unfolded state and a folded state. The stroller frame comprises a front support, a rear support and a push rod, wherein two of the front support, the rear support and the push rod are rotatably connected, the third one is rotatably connected to either of the two previously mentioned, or the three are coaxially and rotatably connected. The child stroller further comprises a seat mechanism and a first linkage mechanism, wherein the seat mechanism comprises a seat; and the seat is arranged on the first linkage mechanism, and the first linkage mechanism is connected to the push rod, such that when the child stroller is folded and the push rod rotates, the seat is driven to move backwards and in a direction close to the front support. The child stroller is convenient to fold and has a compact structure after being folded, thus having a small size.

Description

A stroller TECHNICAL FIELD

[0001] The present application relates to the technical field of children's products, in particular to a stroller. BACKGROUND

[0002] A stroller is generally used when taking children out. In order to facilitate the carrying and storage of the stroller, the stroller is generally foldable. The stroller generally comprises a stroller frame and a seat mechanism arranged on the stroller frame. When the structure of the stroller frame is different, or the arrangement of the seat mechanism on the stroller frame is different, the folding operation mode and the structure volume of the stroller after folding are also different. In the prior art, some strollers have the problems of inconvenient folding operation, large structure volume after folding, and inconvenient carrying and storage. SUMMARY

[0003] The present application aims at the deficiencies in the prior art, and provides a stroller which is convenient to fold and has a small structure volume after folding.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A stroller comprises a stroller frame having an unfolded state and a folded state, the stroller frame comprising a front support, a rear support and a push rod, two of the front support, the rear support and the push rod being rotationally connected, the third being rotationally connected with any one of the two, or the three being coaxially rotationally connected; the stroller further comprises a seat mechanism and a first linkage mechanism, the seat mechanism comprising a seat, the seat being arranged on the first linkage mechanism, the first linkage mechanism being connected with the push rod, so that the seat is driven to move rearward and toward the front support when the stroller is folded and the push rod is rotated.

[0006] In some embodiments, the first linkage mechanism comprises a push rod link, a front support link and a seat link; one end of the push rod link is rotationally connected with the push rod, and the other end of the push rod link is rotationally arranged on the front support link directly or indirectly; the front support link is rotationally connected with the front support, and the seat is rotationally connected with the front support link; one end of the seat link is rotationally connected with the seat, and the other end of the seat link is rotationally connected with the push rod link; when the stroller is folded, the push rod is folded and closed toward the rear support, and drives the push rod link to move downward, the push rod link drives the seat to overturn rearward and fold toward the front support through the seat link, and the seat drives the front support link to fold toward the front support.

[0007] In some embodiments, in the unfolded state, the front support link and the seat link are both supported at the bottom of the seat.

[0008] In some embodiments, the front support link comprises a first link body and a second link body, one end of the first link body and one end of the second link body are connected, and the seat is pivotally arranged on the second link body.

[0009] In the unfolded state, the extension direction of the second link body intersects with the extension direction of the front support, and the second link body, the front support and the seat form a triangular structure in the lateral projection direction.

[0010] In the folded state, the second link body is rotated backward and folded close to the front support, and the seat is flipped backward and folded close to the front support.

[0011] In some embodiments, one end of the first link body and / or one end of the second link body is pivotally connected to the front support, the other end of the first link body is directly or indirectly pivotally connected to the push rod link, and the other end of the second link body is pivotally connected to the front part of the seat.

[0012] In some embodiments, the first link body extends in the front-rear direction as a whole, and the second link body extends in the up-down direction as a whole.

[0013] In some embodiments, in the unfolded state, the extension direction of the push rod link intersects with the extension direction of the seat link, and the push rod link, the seat link and the seat form a triangular structure in the lateral projection direction.

[0014] In some embodiments, the pivot connection between the front support link and the seat is arranged relatively close to the front end of the seat, and the pivot connection between the seat link and the seat is arranged relatively close to the rear end of the seat.

[0015] In some embodiments, the first linkage mechanism further comprises a rear support link, one end of the rear support link is pivotally connected to the rear support, the other end of the push rod link is pivotally connected to the other end of the rear support link, and the front support link is pivotally connected to the rear support link.

[0016] In some embodiments, the front support link comprises a first link body and a second link body, one end of the first link body and one end of the second link body are connected, one end of the first link body and / or one end of the second link body is pivotally connected to the front support, the other end of the first link body is pivotally connected to the rear support link, and the other end of the second link body is pivotally connected to the front part of the seat.

[0017] In some embodiments, in the unfolded state, the first rod body and the rear support link extend in the same direction, forming a triangular structure among the front support, the rear support, the first rod body and the rear support link.

[0018] In some embodiments, on the rear support link, the push rod link is rotatably connected to the rear support link in front of the rotatable connection between the front support link and the rear support link.

[0019] In some embodiments, the stroller frame further comprises a basket rod rotatably connected to the rear support link, and a basket link having one end rotatably connected to the basket rod and the other end rotatably connected to the rear support.

[0020] In some embodiments, the seat mechanism further comprises a backrest rotatably arranged relative to the seat, and the connection between the seat and the backrest moves downward when the stroller folds the seat rearward.

[0021] In some embodiments, the backrest is a split structure, and the backrest comprises a plurality of unit backrests sequentially arranged along the height direction of the backrest, and adjacent two unit backrests are rotatably or slidably connected at one end.

[0022] In some embodiments, the stroller frame further comprises a handle rotatably connected to the push rod.

[0023] The stroller further comprises a first locking mechanism arranged on the stroller frame to lock the stroller frame in the unfolded state.

[0024] The stroller further comprises a second linkage mechanism connected or cooperated with the handle and the first locking mechanism respectively to drive the first locking mechanism to unlock from the locked state when the handle rotates and approaches the push rod.

[0025] In some embodiments, the first locking mechanism comprises a first locking member movably arranged on one of the front support or the rear support and the push rod, and a first locking slot arranged on the other, and the first locking member is detachably arranged in the first locking slot.

[0026] In some embodiments, the second linkage mechanism comprises a first traction cable, one end of which is arranged on the first locking member and the other end of which is arranged on the handle.

[0027] In some embodiments, the other end of the first traction cable is movably arranged on the handlebar such that the stroller folds the handlebar to rotate a set angle to drive the first locking member to slide to unlock the first locking mechanism.

[0028] In some embodiments, the second linkage mechanism further comprises a fixed column, the other end of the first traction cable is fixedly arranged on the fixed column, the handlebar is provided with a first limiting slot extending along the circumferential direction of the handlebar relative to the rotation of the push rod, the first limiting slot has two oppositely arranged ends, and the fixed column is arranged in the first limiting slot; when the stroller frame is in the unfolded state or the folded state, there is a gap between the fixed column and at least one end of the first limiting slot; when the handlebar is folded or unfolded relative to the push rod by an angle, one end of the first limiting slot abuts against the fixed column to drive the fixed column to rotate synchronously in the same direction when the handlebar rotates.

[0029] In some embodiments, the push rod is provided with a second limiting slot, and the fixed column is movably arranged in the second limiting slot.

[0030] In some embodiments, when the stroller frame is in the unfolded state or the folded state, the fixed column abuts against one end of the two ends of the first limiting slot and one end of the two ends of the second limiting slot respectively, and the ends of the first limiting slot and the second limiting slot are located on opposite sides of the fixed column respectively.

[0031] In some embodiments, the other end of the first traction cable is fixedly arranged on the handlebar such that the stroller folds the handlebar to rotate to drive the first locking member to slide to unlock the first locking mechanism.

[0032] In some embodiments, the stroller frame further comprises a handlebar, and the handlebar is rotationally connected with the push rod.

[0033] The stroller further comprises a second locking mechanism arranged between the push rod and the handlebar to lock the relative positions of the two.

[0034] The second locking mechanism comprises a second locking member movably arranged on one of the push rod and the handlebar and a second locking slot arranged on the other, and the second locking member is detachably arranged in the second locking slot.

[0035] In some embodiments, two second locking grooves are arranged on the push rod or the push handle along the circumferential direction of the rotation of the push handle; when the child stroller is in the unfolded state, the second locking member is positioned in one of the second locking grooves; when the child stroller is in the folded state, the second locking member is positioned in the other second locking groove.

[0036] Thanks to the use of the above technical solutions, the child stroller of the present application has the following advantages compared with the prior art: when the child stroller is folded, the seat is driven to move backward and close to the front support through the first linkage mechanism when the push rod is rotated, so that the folding operation of the child stroller is convenient, and the child stroller is compact in structure and small in size after being folded, thereby facilitating the carrying and storage of the child stroller. BRIEF DESCRIPTION OF DRAWINGS

[0037] Fig. 1 is a perspective view of the child stroller of the present embodiment in the unfolded state (seen from rear to front);

[0038] Fig. 2 is another perspective view of the child stroller of the present embodiment in the unfolded state (seen from front to rear);

[0039] Fig. 3 is a side view of the child stroller of the present embodiment in the unfolded state;

[0040] Fig. 4 is an exploded view of the push rod and the push handle of the child stroller of the present embodiment;

[0041] Fig. 5 is a structural view of part of the push handle of the child stroller of the present embodiment;

[0042] Fig. 6 is a sectional view of the push rod and the push handle of the child stroller of the present embodiment in the unfolded state (both the first locking mechanism and the second locking mechanism are in the locked state);

[0043] Fig. 7 is a sectional view of the push rod and the push handle of the child stroller of the present embodiment in the unfolded state (the first locking mechanism is in the locked state, and the second locking mechanism is in the unlocked state);

[0044] Fig. 8 is a sectional view of the push rod and the push handle of the child stroller of the present embodiment in the folded state (the first locking mechanism is in the unlocked state, and the second locking mechanism is in the locked state);

[0045] Fig. 9 is a sectional view of the push rod and the push handle of the child stroller of the present embodiment in the folded state (both the first locking mechanism and the second locking mechanism are in the unlocked state);

[0046] Fig. 10 is a perspective view of the child stroller of the present embodiment in the folding process (after the push handle is rotated and the push rod is closed);

[0047] Fig. 11 is a side view of the stroller in the folding process (after the handle is turned and the push rod is closed);

[0048] Fig. 12 is a perspective view of the stroller in the folding process (the push rod is turned);

[0049] Fig. 13 is a side view of the stroller in the folding process (the push rod is turned);

[0050] Fig. 14 is a perspective view of the stroller in the folded state;

[0051] Fig. 15 is a side view of the stroller in the folded state;

[0052] Fig. 16 is a sectional view of the stroller in the folded state.

[0053] Wherein: 11, front support; 12, rear support; 121, joint; 122, first locking slot; 13, push rod; 131, second locking slot; 132, second limiting slot; 14, front support connecting rod; 141, first rod body; 142, second rod body; 15, rear support connecting rod; 16, push rod connecting rod; 17, basket rod; 18, basket connecting rod; 19, handle; 191, first limiting slot; 192, guide column; 21, seat; 22, backrest; 31, seat connecting rod; 401, first shaft; 402, second shaft; 403, third shaft; 404, fourth shaft; 405, fifth shaft; 406, sixth shaft; 407, seventh shaft; 408, eighth shaft; 409, ninth shaft; 410, tenth shaft; 411, eleventh shaft; 412, twelfth shaft; 5, first locking member; 6, second locking member; 61, locking part; 62, guide slot; 71, first traction cable; 72, fixed column; 81, unlocking button; 82, second traction cable; 91, front wheel assembly; 92, rear wheel assembly. DETAILED DESCRIPTION

[0054] The technical solutions of the present application will be further described below in combination with the drawings and specific embodiments.

[0055] In the following description, the directions such as "front", "rear", "left", "right", "up", "down" and the like are in accordance with Fig. 3, wherein the left side direction is "front", the right side direction is "rear", the upper side direction is "up", the lower side direction is "down", and the direction perpendicular to the paper is "left" and "right". The above definitions of directions are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0056] As shown in FIG. 1-3, the child stroller of the present application comprises a stroller frame having an unfolded state and a folded state, a seat mechanism, a front wheel assembly 91 arranged at the bottom front part of the stroller frame, and a rear wheel assembly 92 arranged at the bottom rear part of the stroller frame.

[0057] The stroller frame comprises a front support 11, a rear support 12, and a push rod 13. The front wheel assembly 91 is arranged at the lower part of the front support 11, and the rear wheel assembly 92 is arranged at the lower part of the rear support 12. Two of the front support 11, the rear support 12, and the push rod 13 are rotationally connected, the third one is rotationally connected with any one of the aforementioned two, or the aforementioned three are coaxially rotationally connected.

[0058] Specifically, as shown in FIG. 1-3, the upper part of the rear support 12 has a joint 121, the upper part of the front support 11 is rotationally connected with the joint 121 through a first shaft 401, and the lower part of the push rod 13 is rotationally connected with the joint 121 through a second shaft 402.

[0059] The first shaft 401 and the second shaft 402 can be respectively located at the two end parts of the joint 121, and the first shaft 401 is located below the second shaft 402. Alternatively, the first shaft 401 and the second shaft 402 can be coaxially arranged, both of which are located at the middle part of the joint 121. Alternatively, the first shaft 401 can be located at the middle part of the joint 121, and the second shaft 402 is located at the upper end part of the joint 121. Alternatively, the first shaft 401 is located at the lower part of the joint 121, and the second shaft 402 is located at the middle part of the joint 121.

[0060] The seat mechanism comprises a seat 21 and a backrest 22. The backrest 22 is rotationally arranged relative to the seat 21, specifically, the lower part of the backrest 22 can be directly rotationally connected with the rear part of the seat 21, or the backrest 22 can be rotationally arranged behind the seat 21 through a cloth cover. When the child stroller is folded, the seat 21 and the backrest 22 are respectively rotated towards the same or different directions and close to the stroller frame.

[0061] The child stroller further comprises a first linkage mechanism, the seat 21 is arranged on the first linkage mechanism, and the first linkage mechanism is connected with the push rod 13, so that when the push rod 13 is rotated during the folding or unfolding of the child stroller, the seat 21 can be synchronously moved to close to or away from the stroller frame. In this embodiment, when the child stroller is folded, the rotation of the push rod 13 makes the seat 21 overturn backward and move towards the front support 11.

[0062] As shown in FIG. 1-3, the first linkage mechanism comprises a front support link 14, a push rod link 16 and a seat link 31. One end of the push rod link 16 is rotatably connected with the push rod 13, and the other end of the push rod link 16 is rotatably arranged on the front support link 14 directly or indirectly. The front support link 14 is rotatably connected with the front support 11, and the seat 21 is rotatably connected with the front support link 11. One end of the seat link 31 is rotatably connected with the seat 21, and the other end of the seat link 31 is rotatably connected with the push rod link 14. When the push rod 13 rotates, the push rod link 16 is driven to move, and the push rod link 16 drives the seat link 31 to move, and the seat 21 is driven to rotate through the seat link 31, and the seat rotates to drive the front support link 14 to rotate relative to the front support 11.

[0063] In this embodiment, as shown in FIG. 1-3, the first linkage mechanism further comprises a rear support link 15. One end of the rear support link 15 is rotatably connected with the rear support 12, and the other end of the push rod link 16 is rotatably connected with the other end of the rear support link 15, and the front support link 14 is rotatably connected with the rear support link 15. In this way, when the stroller is folded or unfolded, the relative rotation between the front support 11 and the rear support 12 can be driven by the first linkage mechanism when the push rod 13 rotates, so that the front support 11 and the rear support 12 are close to or away from each other.

[0064] Specifically, as shown in FIG. 1-3, the front support link 14 comprises a first link body 141 and a second link body 142, and one end of the first link body 141 and the second link body 142 intersects. When the stroller is in an unfolded state, the first link body 141 extends in the front-rear direction, and the second link body 142 extends in the up-down direction. The first link body 141 and / or the second link body 142 is rotatably connected with the front support 11 through a third shaft 403. In this embodiment, the intersection of the first link body 141 and the second link body 142 is rotatably connected with the front support 11 through the third shaft 403. The other end of the first link body 141 is rotatably connected with the rear support link 15 through a fourth shaft 404, and the other end of the second link body 142 is rotatably connected with the front part of the seat 21 through an eleventh shaft 411.

[0065] One end of the rear support link 15 is rotatably connected with the rear support 12 through a fifth shaft 405. One end of the push rod link 16 is rotatably connected with the lower part of the push rod 13 through a sixth shaft 406, and the other end of the push rod link 16 is rotatably connected with the other end of the rear support link 15 through a seventh shaft 407. One end of the seat link 31 is rotatably connected with the seat 21 through a twelfth shaft 412, and the other end of the seat link 31 is rotatably connected with the push rod link 16.

[0066] As shown in FIGS. 1-3, when the stroller is in the unfolded state, the front support link 14 and the rear support link 15 are extended in the front-rear direction and are supported between the front support 11 and the rear support 12. On the rear support link 15, the seventh shaft 407, the fourth shaft 404 and the fifth shaft 405 are arranged in sequence from front to back. The other end of the seat link 31, the rear support link 15 and the push rod link 16 are coaxially rotatably connected by the seventh shaft 407.

[0067] Thus, a four-bar linkage mechanism is formed between the front support 11, the rear support 12, the rear support link 15 and the front support link 14, a four-bar linkage mechanism is formed between the rear support 12, the push rod 13, the push rod link 16 and the rear support link 15, and a four-bar linkage mechanism is formed between the seat 21, the front support link 14, the rear support link 15 and the seat link 31. When the push rod 13 rotates during folding or unfolding of the stroller, the push rod link 16 and the rear support link 15 are driven to rotate by the four-bar linkage mechanism between the rear support 12, the push rod 13, the push rod link 16 and the rear support link 15, thereby driving the front support link 14 to move by the four-bar linkage mechanism between the front support 11, the rear support 12, the rear support link 15 and the front support link 14, so that the front support 11 rotates relative to the rear support 12. The seat 21 is driven to rotate by the four-bar linkage mechanism between the seat 21, the front support link 14, the rear support link 15 and the seat link 31.

[0068] As shown in FIGS. 1-3, the stroller frame can further include a basket rod 17, one end of the basket rod 17 being rotatably connected to the rear support link 15 by the eighth shaft 408. By providing the basket rod 17, a cloth cover can be provided on the basket rod 17, so that the basket rod 17 can be used to place articles when the stroller is in use.

[0069] The stroller frame further includes a basket link 18, one end of the basket link 18 being rotatably connected to the basket rod 17 by the ninth shaft 409, and the other end of the basket link 18 being rotatably connected to the rear support 12 by the tenth shaft 410. Thus, a four-bar linkage mechanism is formed between the rear support 12, the rear support link 15, the basket rod 17 and the basket link 18, so that when the stroller is folded or unfolded, the basket rod 17 can be driven to rotate synchronously with the rear support link 15 to achieve folding or unfolding.

[0070] As shown in FIGS. 1-3, the stroller frame can further include a push handle 19, the lower part of the push handle 19 being rotatably connected to the upper part of the push rod 13. Thus, when the stroller is folded, the push handle 19 can be rotated to approach the push rod 13, thereby reducing the structural volume of the folded stroller.

[0071] The backrest 22 can be provided as an integral structure. Alternatively, the backrest 22 can be provided as a split structure, i.e. the backrest 22 is composed of a plurality of unit backrests which are arranged in sequence along the height direction of the backrest 22, and adjacent two unit backrests are rotationally or slidably connected at one end thereof.

[0072] In this embodiment, when the stroller is folded, the seat 21 is flipped backward, so that the height of the connection between the seat 21 and the backrest 22 is lowered. If the backrest 22 is provided as an integral structure, the lower part of the backrest 22 will extend below the rear wheel assembly 92, so that the stroller has a large volume after being folded, and it is inconvenient to place the folded stroller. Based on this, in this embodiment, the backrest 22 is provided as a split structure, and when the stroller is folded, the unit backrests can be relatively rotated or slidably closed, so that the height of the backrest 22 is reduced, and the backrest 22 will not extend below the rear wheel assembly 92 after the stroller is folded.

[0073] The stroller further comprises a first locking mechanism arranged on the stroller frame to lock the stroller frame in the unfolded state.

[0074] The first locking mechanism can be arranged between the front support 11 or the rear support 12 and the push rod 13. Specifically, as shown in FIGS. 6-9, the first locking mechanism comprises a first locking piece 5 and a first locking groove 122 which is adapted to the first locking piece 5. The first locking piece 5 is movably arranged on one of the front support 11 or the rear support 12 and the push rod 13, and the first locking groove 122 is arranged on the other one of the front support 11 or the rear support 12 and the push rod 13. When the first locking mechanism is in the locked state, the first locking piece 5 is positioned in the first locking groove 122, so as to lock the stroller in the unfolded state, as shown in FIGS. 6 and 7. When the first locking mechanism is in the unlocked state, the first locking piece 5 is out of the first locking groove 122, and at this time the stroller frame can be folded, as shown in FIGS. 8 and 9.

[0075] In this embodiment, the first locking piece 5 is slidably arranged on the push rod 13, and the first locking groove 122 is arranged on the rear support 12, as shown in FIGS. 6-9.

[0076] The first locking mechanism further comprises a first elastic piece (not shown in the drawings), one end of the first elastic piece is arranged on the first locking piece 5, and the other end is arranged on the push rod 13. When the push rod 13 is rotated relative to the rear support 12 to a position corresponding to the position of the first locking groove 122, the first locking piece 5 can be slid under the elastic force of the first elastic piece, so as to insert the first locking piece 5 into the first locking groove 122.

[0077] The stroller further comprises a second locking mechanism arranged between the push rod 13 and the push handle 19 to lock the relative position of the two.

[0078] In this embodiment, the second locking mechanism is in the locked state when the stroller is in the unfolded state and the folded state, and the push handle 19 cannot rotate relative to the push rod 13. Only when the second locking mechanism is unlocked, the push handle 19 can rotate relative to the push rod 13 and approach or move away from the push rod 13.

[0079] As shown in FIGS. 6-9, the second locking mechanism includes a second locking piece 6 and a second locking groove 131 matched with the second locking piece 6. The second locking piece 6 is movably arranged on one of the push rod 13 and the push handle 19, and the second locking groove 131 is arranged on the other one of the push rod 13 and the push handle 19. When the second locking mechanism is in the locked state, the second locking piece 6 is positioned in the second locking groove 131, thereby locking the relative positions of the push handle 19 and the push rod 13, as shown in FIGS. 6 and 8. When the second locking mechanism is in the unlocked state, the second locking piece 6 is out of the second locking groove 131, and at this time the push handle 19 can rotate relative to the push rod 13, as shown in FIGS. 7 and 9.

[0080] Specifically, the second locking piece 6 is provided with a locking portion 61. When the second locking mechanism is in the locked state, the locking portion 61 is inserted into the second locking groove 131. When the second locking mechanism is in the unlocked state, the locking portion 61 is out of the second locking groove 131. As shown in FIGS. 6-9.

[0081] As shown in FIGS. 6-9, the second locking groove 131 is provided with two along the circumferential direction of the rotation of the push handle 19 on the push rod 13 or the push handle 19. When the stroller is in the unfolded state, the second locking piece 6 is positioned in one of the second locking grooves 131. When the stroller is in the folded state, the second locking piece 6 is positioned in the other of the second locking grooves 131.

[0082] In this embodiment, the second locking piece 6 is slidably arranged on the push handle 19, and the second locking groove 131 is arranged on the push rod 13.

[0083] The second locking mechanism further includes a second elastic piece (not shown in the figures), one end of the second elastic piece is arranged on the second locking piece 6, and the other end is arranged on the push handle 19. When the push handle 19 is rotated relative to the push rod 13 to the position of the locking portion 61 corresponding to the position of the second locking groove 131, the second locking piece 6 can be slid under the action of the elastic force of the second elastic piece, so that the locking portion 61 is inserted into the second locking groove 131.

[0084] A guide structure is further arranged between the second locking member 6 and the push handle 19, so as to guide the sliding of the second locking member 6 when the second locking mechanism is locked or unlocked. As shown in Figs. 6-9, the guide structure comprises a guide groove 192 arranged on one of the push handle 19 and the second locking member 6 and a guide post 62 arranged on the other one, the guide post 62 being slidably arranged in the guide groove 192. During the process of driving the second locking mechanism to lock or unlock, the sliding of the second locking member 6 is guided and limited by the cooperation between the guide post 62 and the guide groove 192.

[0085] The stroller further comprises a second linkage mechanism connected or cooperating with the push handle 19 and the first locking mechanism respectively, so that when the push handle 19 is rotated to approach the push rod 13 during the folding of the stroller, the first locking mechanism is driven to be unlocked from the locked state, thus the first locking mechanism is not separately operated to be unlocked, and the folding operation of the stroller is simple and convenient.

[0086] As shown in Figs. 6 and 7, the second linkage mechanism comprises a first traction cable 71, one end of which is arranged on the first locking member 5 and the other end of which is arranged on the push handle 19.

[0087] The other end of the first traction cable 71 can be fixedly arranged on the push handle 19, so that when the push handle 19 starts to rotate, the first locking member 5 is pulled to slide through the first traction cable 71, so that when the push handle 19 is folded in place, the first locking mechanism is unlocked. That is, the movement stroke of the push handle 19 when it is folded is consistent with the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked.

[0088] The other end of the first traction cable 71 can also be movably arranged on the push handle 19. In this way, the movement stroke of the push handle 19 when it is folded is not consistent with the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked. In this embodiment, the movement stroke of the push handle 19 when it is folded is greater than the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked, that is, when the push handle 19 starts to rotate during the folding of the stroller, the other end of the first traction cable 71 is not moved, and the first locking member 5 is not moved; when the push handle 19 is rotated by a certain angle, the push handle 19 continues to rotate, and the first locking member 5 is pulled to slide through the first traction cable 71 to unlock the first locking mechanism.

[0089] Specifically, the second linkage mechanism further comprises a fixing post 72 movably arranged on the push handle 19, and the other end of the first traction cable 71 is fixedly arranged on the fixing post 72, as shown in Figs. 9-12.

[0090] As shown in Fig. 5, the handle 19 is provided with a first limiting slot 191, which extends along the circumferential direction of the handle 19 relative to the push rod 13, and has two oppositely arranged end portions. The fixing column 72 is movably arranged in the first limiting slot 191.

[0091] When the stroller frame is in the unfolded state or the folded state, there is a gap between the fixing column 72 and at least one end portion of the first limiting slot 191. In this embodiment, there is a gap between the fixing column 72 and one of the two end portions of the first limiting slot 191, and the other end portion abuts against the fixing column 72.

[0092] When the stroller is unfolded or folded, the handle 19 rotates relative to the push rod 13. Since the fixing column 72 abuts against one end portion of the first limiting slot 191, the handle 19 can only rotate in a single direction away from the end portion of the first limiting slot 191. During this process, the fixing column 72 remains stationary, the first traction cable 71 and the first sliding member 5 also remain stationary, and the other end portion of the first limiting slot 191 gradually approaches the fixing column 72. When the push rod 19 rotates to a certain angle, the other end portion of the first limiting slot 191 abuts against the fixing column 72, so that when the handle 19 rotates, the fixing column 72 is driven to rotate in the same direction synchronously, thereby pulling the first traction cable 71 and driving the first locking member 5 to slide through the first traction cable 71.

[0093] The push rod 13 is provided with a second limiting slot 132, and the fixing column 72 is movably arranged in the second limiting slot 132. When the stroller is in the unfolded state, the fixing column 72 is located at one end portion of the second limiting slot 132, and the first limiting slot 191 and the second limiting slot 132 are respectively located at opposite sides of the fixing column 72, thereby positioning the fixing column 72, as shown in Fig. 6. When the stroller is in the folded state, the fixing column 72 is located at the other end portion of the second limiting slot 132, and the first limiting slot 191 and the second limiting slot 132 are also respectively located at opposite sides of the fixing column 72, thereby also positioning the fixing column 72, as shown in Fig. 8.

[0094] The stroller further comprises an unlocking mechanism arranged on the stroller frame, and the unlocking mechanism is connected or cooperates with the second locking mechanism. When the second locking mechanism operates the unlocking mechanism in the locked state, the second locking mechanism can be unlocked.

[0095] The unlocking mechanism comprises an unlocking button 81 and a second traction cable 82. The unlocking button 81 is movably arranged on the component where the second locking member 6 is arranged. In this embodiment, the unlocking button 81 is slidably arranged on the handle 19, as shown in Fig. 4. One end portion of the second traction cable 82 is arranged on the unlocking button 81, and the other end portion of the second traction cable 82 is arranged on the second locking member 6.

[0096] When the second locking mechanism is in the locked state, the unlocking button 81 is pressed, the second traction cable 82 is pulled, the second locking member 6 is pulled by the second traction cable 82 to slide relative to the push handle 19, and the second locking member 6 is released from the second locking slot 131, so that the second locking mechanism is unlocked.

[0097] When the stroller is in the unfolded state, the first locking mechanism and the second locking mechanism are in the locked state, the first rod body 141 extends in the same direction as the rear support connecting rod 15, and a triangular structure is formed between the front support 11, the rear support 12, the first rod body 141, and the rear support connecting rod 15. Meanwhile, a triangular structure is formed between the second rod body 142, the front support 11, and the seat 21 in the lateral projection direction, and a triangular structure is formed between the push rod connecting rod 16, the seat connecting rod 31, and the seat 21, which makes the structure of the stroller in the unfolded state stable and improves the safety performance of the stroller in use, as shown in FIGS. 1-3.

[0098] When the stroller is folded from the unfolded state, the unlocking mechanism is operated to unlock the second locking mechanism. The push handle 19 is rotated forward to approach the push rod 13. When the push handle 19 is rotated to a certain angle, the push handle 19 is continuously rotated to slide the first locking member 5, so that when the push handle 19 is rotated to approach the push rod 13, the first locking mechanism is unlocked, and the second locking mechanism is locked again at this time, as shown in FIGS. 10 and 11. The whole formed by the push rod 13 and the push handle 19 is rotated downward relative to the rear support 12 to approach the rear support 12. In this process, the front support 11 is rotated backward relative to the rear support 12 by the first linkage mechanism, and the seat 21 is moved backward relative to the front support 11 by the first linkage mechanism. In this process, the backrests 22 are rotated or slid relative to each other to approach the rear support 12, and the whole backrest 22 is rotated downward relative to the rear support 12 under the action of its own gravity to approach the rear support 12. The folding process is shown in FIGS. 12 and 13. Until the rod members and the seat mechanism that constitute the stroller frame are closely approached together, the final folding is shown in FIGS. 14-16. In the folded stroller, the front support 11, the rear support 12, the push rod 13, and the push handle 19 are sequentially arranged from front to back, and the seat mechanism is folded between the push handle 13 and the rear support 12. The folded stroller has a compact structure and small volume, which is convenient for carrying and storing.

[0099] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

[0100] The present application discloses a kind of child stroller, including the stroller frame with unfolded state and folding state, the stroller frame includes front support, rear support and push rod, two of the front support, the rear support and the push rod are rotationally connected, the third is rotationally connected with any one of the two, or the three are coaxially rotationally connected;The child stroller further includes seat mechanism and first linkage mechanism, the seat mechanism includes seat, the seat is arranged on the first linkage mechanism, the first linkage mechanism is connected with the push rod, so that the child stroller folds, the push rod rotates and drives the seat to move back and to the direction of approaching with the front support.The child stroller is convenient to fold, and the structure is compact after folding, small in size.

Claims

1. A stroller, characterized by: The stroller frame comprises a front support, a rear support and a push bar, two of the three are rotationally connected, the third is rotationally connected with any of the two, or all of the three are coaxially rotationally connected; the stroller further comprises a seat mechanism and a first linkage mechanism, the seat mechanism comprises a seat, the seat is arranged on the first linkage mechanism, and the first linkage mechanism is connected with the push bar, so that the seat is driven to move rearward and toward the front support when the stroller is folded and the push bar is rotated.

2. The stroller of claim 1, wherein: The first linkage mechanism comprises a push bar link, a front support link and a seat link; one end of the push bar link is rotationally connected with the push bar, and the other end of the push bar link is directly or indirectly rotationally arranged on the front support link; the front support link is rotationally connected with the front support, and the seat is rotationally connected with the front support link; one end of the seat link is rotationally connected with the seat, and the other end of the seat link is rotationally connected with the push bar link; when the stroller is folded, the push bar is folded toward the rear support, the push bar link is driven to move downward, the push bar link drives the seat to be flipped rearward and folded toward the front support through the seat link, and the seat drives the front support link to be folded toward the front support.

3. The stroller of claim 2, wherein: In the unfolded state, the front support link and the seat link are supported at the bottom of the seat.

4. The stroller of claim 2, wherein: The front support link comprises a first link body and a second link body, one end of the first link body and one end of the second link body are intersected, and the seat is rotationally arranged on the second link body; In the unfolded state, the extending direction of the second link body intersects with the extending direction of the front support, and the second link body, the front support and the seat form a triangular structure in the lateral projection direction; In the folded state, the second link body is rotated rearward and folded toward the front support, and the seat is flipped rearward and folded toward the front support.

5. The stroller of claim 4, wherein: One end of the first link body and / or one end of the second link body is rotationally connected with the front support, the other end of the first link body is directly or indirectly rotationally connected with the push bar link, and the other end of the second link body is rotationally connected with the front part of the seat.

6. The stroller of claim 5, wherein: The first link body extends in the front-rear direction as a whole, and the second link body extends in the up-down direction as a whole.

7. The stroller of claim 2, wherein: In the unfolded state, the extending direction of the push bar link intersects with the extending direction of the seat link, and the push bar link, the seat link and the seat form a triangular structure in the lateral projection direction.

8. The stroller of claim 2, wherein: The rotationally connected position of the front support link and the seat is arranged relatively close to the front end of the seat, and the rotationally connected position of the seat link and the seat is arranged relatively close to the rear end of the seat.

9. The stroller of claim 2, wherein: The first linkage mechanism further comprises a rear support connecting rod, one end of the rear support connecting rod is rotationally connected with the rear support, the other end of the push rod connecting rod is rotationally connected with the other end of the rear support connecting rod, and the front support connecting rod is rotationally connected with the rear support connecting rod.

10. The stroller of claim 9, wherein: The front support connecting rod comprises a first rod body and a second rod body, one end of the first rod body and the second rod body intersects, one end of the first rod body and / or the second rod body is rotationally connected with the front support, the other end of the first rod body is rotationally connected with the rear support connecting rod, and the other end of the second rod body is rotationally connected with the front part of the seat.

11. The stroller of claim 10, wherein: In the unfolded state, the first rod body and the rear support connecting rod extend in the same direction, and a triangular structure is formed between the front support, the rear support, the first rod body and the rear support connecting rod.

12. The stroller of claim 9, wherein: On the rear support connecting rod, the rotationally connected part of the push rod connecting rod and the rear support connecting rod is located in front of the rotationally connected part of the front support connecting rod and the rear support connecting rod.

13. The stroller of claim 9, wherein: The stroller frame further comprises a basket rod and a basket connecting rod, the basket rod is rotationally connected with the rear support connecting rod, one end of the basket connecting rod is rotationally connected with the basket rod, and the other end is rotationally connected with the rear support.

14. The stroller of claim 1, wherein: The seat mechanism further comprises a backrest, the backrest is rotationally arranged relative to the seat, and the connection part of the seat and the backrest moves downward when the stroller folds the seat backward.

15. The stroller of claim 14, wherein: The backrest is a split structure, the backrest comprises a plurality of unit backrests, the plurality of unit backrests are sequentially arranged along the height direction of the backrest, and the adjacent end of two adjacent unit backrests is rotationally or slidingly connected.

16. The stroller of claim 1, wherein: The stroller frame further comprises a push handle, the push handle is rotationally connected with the push rod. The stroller further comprises a first locking mechanism, the first locking mechanism is arranged on the stroller frame to lock the stroller frame in the unfolded state. The stroller further comprises a second linkage mechanism, the second linkage mechanism is connected or matched with the push handle and the first locking mechanism respectively, so as to drive the first locking mechanism to unlock from the locked state when the push handle rotates and approaches the push rod.

17. The stroller of claim 16, wherein: The first locking mechanism comprises a first locking piece movably arranged on one of the front support or the rear support and the push rod, and a first locking slot arranged on the other, the first locking piece is detachably arranged in the first locking slot.

18. The stroller of claim 17, wherein: The second linkage mechanism comprises a first traction rope, one end of the first traction rope is arranged on the first locking piece, and the other end is arranged on the push handle.

19. The stroller of claim 18, wherein: The other end of the first traction rope is movably arranged on the push handle, so that the stroller makes the first locking piece slide to unlock the first locking mechanism after the push handle is rotated to a set angle.

20. The stroller of claim 19, wherein: The second linkage mechanism further comprises a fixed column, the other end of the first traction cable is fixedly arranged on the fixed column, the push handle is provided with a first limiting slot, the first limiting slot extends along the circumferential direction of the push handle relative to the rotation of the push rod, the first limiting slot has two ends arranged oppositely, and the fixed column is arranged in the first limiting slot; when the stroller frame is in the unfolded state or the folded state, there is a gap between the fixed column and at least one end of the first limiting slot; when the push handle is folded or unfolded relative to the push rod by an angle, one end of the first limiting slot abuts against the fixed column to drive the fixed column to rotate synchronously in the same direction when the push handle rotates.

21. The stroller of claim 20, wherein: The push rod is provided with a second limiting slot, and the fixed column is movably arranged in the second limiting slot.

22. The stroller of claim 21, wherein: When the stroller frame is in the unfolded state or the folded state, the fixed column abuts against one end of the two ends of the first limiting slot and one end of the two ends of the second limiting slot respectively, and the ends of the first limiting slot and the second limiting slot are located on opposite sides of the fixed column respectively.

23. The stroller of claim 18, wherein: The other end of the first traction cable is fixedly arranged on the push handle, so that the sliding of the first locking member is started when the child stroller is folded and the push handle starts to rotate, so that the first locking mechanism is unlocked.

24. The stroller of claim 1, wherein: The stroller frame further comprises a push handle, and the push handle is rotationally connected with the push rod. The child stroller further comprises a second locking mechanism, and the second locking mechanism is arranged between the push rod and the push handle to lock the relative positions of the two. The second locking mechanism comprises a second locking member movably arranged on one of the push rod and the push handle and a second locking slot arranged on the other, and the second locking member is detachably arranged in the second locking slot.

25. The stroller of claim 24, wherein: The second locking slot is provided with two on the push rod or the push handle along the circumferential direction of the rotation of the push handle; when the child stroller is in the unfolded state, the second locking member is positioned in one of the second locking slots; when the child stroller is in the folded state, the second locking member is positioned in the other second locking slot.

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