Baby stroller

Abstract

The utility model discloses a child stroller which comprises a stroller frame, a wheel assembly and a limiting piece, the stroller frame comprises a first support and a second support which are rotationally connected through a first shaft, the wheel assembly is rotationally connected with the first support through a second shaft, and the limiting piece is movably arranged on the first support; when the stroller is in the unfolded state, the limiting pieces are far away from the wheel assemblies. When the stroller is folded, the second support can be matched with the limiting piece to drive the limiting piece to move in the direction close to the wheel assembly, and the limiting piece is matched with the wheel assembly and drives the wheel assembly to rotate to avoid interference generated when the wheel assembly and the stroller frame are folded. In the folding process of the stroller, movement of the limiting pieces and rotation of the wheel assemblies do not need to be operated independently and can be achieved through folding linkage of the stroller frame, and therefore folding operation of the stroller is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles technical field, concretely relates to a children's pushchair. BACKGROUND

[0002] The children's pushchair is a very convenient children's walking tool, which is generally used when adults carry children to go out. The children's pushchair can generally be folded to facilitate the carrying and storage of the children's pushchair. The children's pushchair generally comprises a foldable frame, a front wheel mounted at the front of the frame, a rear wheel mounted at the rear of the frame, a locking device capable of locking the frame in an open state, and a seat pocket mounted on the frame for a baby to sit on. In the prior art, when folding, the front wheel assembly is prone to interference with the rear wheel assembly or the pushchair frame, so that the pushchair frame cannot be closely closed. After manually rotating the front wheel assembly by a certain angle, the children's pushchair can continue to be folded, which makes the folding operation of the children's pushchair inconvenient. SUMMARY

[0003] The utility model aims at the deficiency in the prior art, and provides a children's pushchair which is convenient to fold.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0005] A children's pushchair has an unfolded state and a folded state, comprising a pushchair frame, the pushchair frame comprising a first support and a second support connected by a first shaft, the pushchair frame further comprising a wheel assembly connected to the first support by a second shaft and a limiting piece movably arranged on the first support.

[0006] When the children's pushchair is in the unfolded state, the limiting piece is away from the wheel assembly; when the children's pushchair is folded, the second support can cooperate with the limiting piece to drive the limiting piece to move towards the wheel assembly, the limiting piece cooperates with the wheel assembly, and drives the wheel assembly to rotate to avoid interference between the wheel assembly and the pushchair frame when folding.

[0007] In some embodiments, a first inclined guide surface adapted to the limiting piece is provided on the wheel assembly, and the limiting piece is movably arranged on the first support in a vertical direction; when the children's pushchair is folded, the limiting piece moves towards the first inclined guide surface and slides along the first inclined guide surface to drive the wheel assembly to rotate.

[0008] In some embodiments, the first inclined guide surface is provided with two, and the two first inclined guide surfaces are inclinedly arranged in opposite directions.

[0009] The limiting member slides along one of the first inclined guide surfaces to drive the wheel assembly to rotate inwardly, and the limiting member slides along the other first inclined guide surface to drive the wheel assembly to rotate outwardly.

[0010] In some embodiments, the wheel assembly is provided with a protrusion protruding towards the first support, and the two first inclined guide surfaces are arranged on opposite sides of the protrusion and intersect with each other.

[0011] The lower part of the limiting member is provided with second inclined guide surfaces, which can be in abutting engagement with the first inclined guide surfaces when the limiting member moves towards the wheel assembly. The second inclined guide surfaces are arranged on opposite sides of the limiting member and intersect with each other.

[0012] In some embodiments, the second support is provided with third inclined guide surfaces, which are in abutting engagement with the limiting member to drive the limiting member to move towards the wheel assembly when the second support is folded towards the first support.

[0013] The second support is provided with a clamping groove, and the upper part of the limiting member is located in the clamping groove, and the third inclined guide surfaces are arranged on the side wall of the clamping groove.

[0014] In some embodiments, the first support has a support body and an extension part extending from the support body towards the inner side of the support body, the second support is rotatably installed on the extension part and located on the inner side of the support body, and the wheel assembly is rotatably installed on the bottom of the extension part.

[0015] The extension part has an inner side edge and an outer side edge arranged opposite to each other in the left-right direction, and the limiting member is arranged close to the inner side edge.

[0016] In the left-right direction, the second shaft is arranged opposite to the limiting member and the first shaft.

[0017] The first shaft is arranged close to the outer side edge.

[0018] The first shaft is arranged obliquely to the horizontal plane and obliquely downwardly.

[0019] In some embodiments, the stroller further has a rear support rotatably connected with the first support, and when the stroller is folded, the first support moves towards the rear support, and the limiting member drives the wheel assembly to rotate towards a position deviated from the rear support.

[0020] In some embodiments, the limiting members are in abutting engagement with the wheel assemblies to limit the rotation angle of the wheel assemblies about the second shaft when the stroller is being folded and in the folded state;

[0021] The upper portion of the wheel assembly is provided with a convex portion protruding upward, and the lower portion of the limiting member is in abutting engagement with the convex portion and located on the rotation path of the convex portion about the second shaft when the stroller is being folded and in the folded state.

[0022] In some embodiments, the limiting member is slidably arranged on the first support in the up-down direction;

[0023] The stroller further comprises a resilient member arranged between the first support and the limiting member, and the elastic force of the resilient member is used to drive the limiting member to move away from the wheel assembly.

[0024] In some embodiments, the first supports are arranged on the left and right sides respectively, and the second supports are arranged in pairs and between the first supports on the left and right sides, and the adjacent end portions of the second supports are rotationally connected, and the other end portion of each second support is rotationally connected with the corresponding first support on the left or right side through the first shaft, and the limiting member is arranged on the inner side of the first shaft; when the stroller is in the unfolded state, the second supports are sequentially arranged in the left-right direction, the first shaft extends in the front-back direction, and the second shaft extends in the up-down direction; when the stroller is folded, the second supports are rotated towards each other to make the first supports on the left and right sides close to each other in the left-right direction.

[0025] The second support is a foot pedal for the child to step on.

[0026] The wheel assemblies corresponding to the first supports are arranged on the left and right sides respectively, and each wheel assembly on the left or right side comprises a wheel; when the stroller is in the unfolded state, the wheels on the left and right sides are parallel to each other; and when the stroller is in the folded state, the wheels on the left and right sides are inclined to each other and in abutting engagement.

[0027] Thanks to the use of the above technical solutions, the stroller of the present application has the following advantages compared with the prior art: when the stroller is folded, the rotation of the second support can drive the limiting member to move, and the limiting member can cooperate with the wheel assembly, so that the wheel assembly can automatically rotate about the second shaft, and the wheel assembly will not affect the folding of the stroller, and the stroller can be smoothly folded to the final folded state. During the entire folding process, the movement of the limiting member and the rotation of the wheel assembly do not need to be operated separately, and can be achieved through the folding linkage of the stroller frame, so that the folding operation of the stroller is convenient. Attached Figure Description

[0028] Appendix Figure 1 This is a three-dimensional schematic diagram of the stroller in the unfolded state according to this embodiment;

[0029] Appendix Figure 2 This is a side view of the stroller in the unfolded state according to this embodiment;

[0030] Appendix Figure 3 This is one of the exploded schematic diagrams of the position of the first bracket and wheel assembly when the stroller is in the unfolded state according to this embodiment;

[0031] Appendix Figure 4 This is the second exploded view of the position of the first support and wheel assembly when the stroller is in the unfolded state in this embodiment;

[0032] Appendix Figure 5 For the appendix Figure 2 sectional view along line AA;

[0033] Appendix Figure 6 This is a three-dimensional schematic diagram of the stroller in this embodiment during the folding process;

[0034] Appendix Figure 7 This is a side view of the stroller in this embodiment during the folding process;

[0035] Appendix Figure 8 This is a three-dimensional schematic diagram of the stroller in the folded state according to this embodiment;

[0036] Appendix Figure 9 This is a front view of the stroller in the folded state according to this embodiment;

[0037] Appendix Figure 10 This is a schematic diagram of the structure of the first bracket and wheel assembly when the stroller of this embodiment is in the folded state;

[0038] Appendix Figure 11 For the appendix Figure 10 sectional view along line AA;

[0039] Appendix Figure 12 For the appendix Figure 10 Schematic diagram of cross section along line BB.

[0040] Wherein: 11, first support; 111, support body; 112, extension; 12, second support; 121, clamping groove; 121a, third inclined guide surface; 13, rear support assembly; 131, rear upper rod; 132, rear lower rod; 14, push rod assembly; 15, side handrail; 16, lower connecting rod; 17, front connecting rod; 18, rear pull rod; 19, rear cross brace; 21, wheel fork; 211, convex part; 211a, first inclined guide surface; 211b, first limiting part; 211c, second limiting part; 212, concave part; 213, column part; 22, wheel; 31, first shaft; 32, second shaft; 4, limiting piece; 41, second inclined guide surface; 5, elastic piece; 6, rear wheel assembly. DETAILED DESCRIPTION

[0041] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0042] In the following description, the directions such as "front", "rear", "left", "right", "up", "down" and the like are all according to the directions shown in the drawings. Figure 2 In the drawings, the left direction is "front", the right direction is "rear", the up direction is "up" and the down direction is "down". The directions perpendicular to the paper are "left" and "right". The above definitions of directions are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0043] As shown in Figure 1 and Figure 2 , the utility model discloses a child stroller, which comprises a stroller frame having an unfolded state and a folded state, and a wheel assembly arranged at the bottom of the stroller frame.

[0044] The stroller frame comprises a first support 11 and a second support 12, and the first support 11 and the second support 12 are rotationally connected through a first shaft 31. When the stroller frame is converted between the unfolded state and the folded state, the first support 11 and the second support 12 rotate relative to each other.

[0045] The wheel assembly is rotationally connected to the lower part of the first support 11 through a second shaft 32. Specifically, as shown in Figures 3-5 , the wheel assembly comprises a wheel fork 21 and a wheel 22 rotationally arranged on the wheel fork 21, and the upper part of the wheel fork 21 is rotationally connected to the first support 11 through the second shaft 32. When the child stroller is in the unfolded state, the wheel assembly as a whole can rotate relative to the first support 11 within a range of 360° about the second shaft 32, thereby facilitating the turning of the child stroller during travel.

[0046] As shown in Figures 3-5 and Figure 11As shown, the stroller further comprises a limiting member 4 movably arranged on the first support 11. When the stroller is folding and folded, the limiting member 4 can cooperate with the wheel assembly, thereby blocking the rotation of the wheel assembly, so that the wheel assembly can only rotate within a certain angle range around the second shaft 32 during the folding process and after the stroller is folded, thereby avoiding the problem that the wheels 22 are stuck in the stroller frame and need to be manually pulled by hand when the stroller is folded and unfolded.

[0047] In this embodiment, the first support 11 comprises a support body 111 and an extension 112 extending from the support body 111 towards the inner side of the support body 111. The second support 12 is rotatably connected to the extension 112 through the first shaft 31, and the second support 12 is located on the inner side of the support body 111. The wheel fork 21 is rotatably mounted on the bottom of the extension 112 through the second shaft 32.

[0048] The extension 112 has an inner side and an outer side arranged opposite in the left-right direction, the limiting member 4 is arranged at a position close to the inner side, and the first shaft 31 is arranged at a position close to the outer side. In the left-right direction, the second shaft 32 is arranged between the limiting member 4 and the first shaft 31.

[0049] The limiting member 4 has a first position and a second position relative to the first support 11. When the stroller is in an unfolded state, the limiting member 4 is in the first position in the first support 11, at this time the limiting member 4 is away from the wheel assembly, so that the limiting member 4 does not block the rotation of the wheel assembly, that is, it does not affect the normal travel of the stroller, as shown in Figure 5 When the stroller is folded, the limiting member 4 moves from the first position to the second position, and when the limiting member 4 moves a certain distance, the limiting member 4 can cooperate with the wheel assembly. When the stroller is in a folded state, the limiting member 4 is in the second position in the first support 11, at this time the limiting member 4 cooperates with the wheel assembly, as shown in Figure 11 and Figure 12 Thus, during the folding process and after the stroller is folded, the limiting member 4 can block the rotation of the wheel assembly, so that the wheel assembly can only rotate within a certain angle range around the second shaft 32.

[0050] Specifically, as shown in Figure 4 and Figure 5 The upper part of the wheel fork 21 is provided with a convex portion 211 protruding upward, and the convex portion 211 is eccentrically arranged relative to the second shaft 32. When the stroller is folded, the limiting member 4 can move to abut and cooperate with the convex portion 211, and the limiting member 4 is located on the rotation path of the convex portion 211 around the second shaft 32. In this way, when the convex portion 211 rotates around the second shaft 32, the limiting member 4 can block the convex portion 211, thereby limiting the rotation angle of the convex portion 211, i.e. the wheel assembly.

[0051] The wheel fork 21 is provided with a first limiting part 211b and a second limiting part 211c which abut against the limiting member 4 to limit the rotation stroke of the wheel assembly, and the first limiting part 211b and the second limiting part 211c are arranged on opposite sides of the convex part 211.

[0052] The upper part of the wheel fork 21 further has a recessed part 212 which is recessed relative to the convex part 211, and the recessed part 212 is located on the side of the circumferential direction of the convex part 211, and when the stroller is folded, the limiting member 4 moves to the recessed part 212.

[0053] In this embodiment, as shown in Figure 12 The upper part of the wheel fork 21 is provided with a column part 213 which is inserted into the first support 11, and the recessed part 213 is located on the outer side of the column part 213 and is recessed downward from the upper end of the outer side of the column part 213, and the recessed part 212 extends along the circumferential direction. When the stroller is in the folded state, the lower part of the limiting member 4 is inserted into the recessed part 212, and the convex part 211 is fixedly arranged in the recessed part 212. When the wheel assembly rotates around the second shaft 32, the limiting member 4 moves along the extension direction of the recessed part 212, and when the convex part 211 abuts against the limiting member 4, the wheel assembly cannot continue to rotate.

[0054] The angle corresponding to the arc length of the limiting member 4 is the angle that the wheel assembly is limited to rotate. In this embodiment, the angle corresponding to the arc length of the limiting member 4 is 80°, that is, the maximum angle that the wheel assembly can rotate around the second shaft 32 in the folded state is 280°.

[0055] In this embodiment, the limiting member 4 is arranged in the first support 11 to be able to slide up and down, and by sliding the limiting member 4 up and down relative to the first support 11, the limiting member 4 is switched between the first position and the second position.

[0056] After the stroller is folded to a certain angle, the problem that the wheel assembly interferes with other parts of the stroller and the stroller cannot continue to be folded will occur, at which time the wheel assembly needs to be manually rotated around the second shaft 32 by a certain angle before the stroller can continue to be folded. Based on this, in this embodiment, when the stroller is folded and the limiting member 4 is switched from the first position to the second position, the wheel assembly can be automatically rotated around the second shaft 32 relative to the first support 11 by a certain angle through the cooperation of the limiting member 4 and the convex part 211, which can avoid the interference between the wheel assembly and other parts of the stroller during the folding of the stroller, so that the stroller has a smaller structure volume after being folded, and the folding operation of the stroller is more simple and convenient.

[0057] Specifically, as shown in Figure 3 and Figure 4As shown, the upper portion of the convex portion 211 is provided with a first inclined guide surface 211a, and the lower portion of the limiting member 4 is provided with a second inclined guide surface 41 matched with the first inclined guide surface 211a. When the limiting member 4 is in the first position, the second inclined guide surface 41 is away from the first inclined guide surface 211a. When the limiting member 4 moves a certain distance from the first position to the second position, the second inclined guide surface 41 is matched with the first inclined guide surface 211a, so that when the limiting member 4 continues to move to the second position, the second inclined guide surface 41 can act on the first inclined guide surface 211a, thereby driving the wheel assembly to automatically rotate around the second shaft 32 relative to the first support 11.

[0058] The first inclined guide surface 211a is provided with two first inclined guide surfaces 211a which are intersected and inclined to the opposite sides. Correspondingly, the second inclined guide surface 41 is provided with two second inclined guide surfaces 41 which are intersected and inclined to the opposite sides.

[0059] When the stroller is folded from the unfolded state, one second inclined guide surface 41 is matched with the corresponding first inclined guide surface 211a in position to drive the wheel assembly to automatically rotate around the second shaft 32 to the inside of the stroller frame. When the stroller is unfolded from the folded state, the other second inclined guide surface 41 is matched with the corresponding first inclined guide surface 211a in position to drive the wheel assembly to automatically rotate around the second shaft 32 to the outside of the stroller frame.

[0060] In this embodiment, the first limiting portion 211b and the second limiting portion 211c are provided at the roots of the two first inclined guide surfaces 211a.

[0061] When the second support 12 is rotated relative to the first support 11 during folding of the stroller, the second support 12 can act on the limiting member 4, thereby driving the limiting member 4 to move relative to the first support 11, and then moving from the first position to the second position. In this way, the movement of the limiting member 4 can be achieved by the rotation of the first support 11, making the folding operation of the stroller simple.

[0062] Specifically, the second support 12 is provided with a third inclined guide surface 121a which is matched with the limiting member 4. When the second support 12 is rotated relative to the first support 11 during folding of the stroller, the third inclined guide surface 121a acts on the limiting member 4, thereby driving the limiting member 4 to move relative to the first support 11.

[0063] In this embodiment, the second support 12 is provided with a clamping groove 121, the upper portion of the limiting member 4 is located in the clamping groove 121, the third inclined guide surface 121a is provided on the side wall of the clamping groove 121, and the third inclined guide surface 121a abuts against the upper portion of the limiting member 4.

[0064] The child stroller further comprises a resilient member 5, one end of the resilient member 5 is arranged on the first support 11, and the other end of the resilient member 5 is arranged on the limiting member 4. The elastic force of the resilient member 5 is used to drive the limiting member 4 to be kept in the first position.

[0065] The first support 11 has an inner side and an outer side which are oppositely arranged along the left-right direction, the second support 12 is rotatably arranged on the inner side of the first support 11, and the limiting member 4 is oppositely arranged on the inner side of the first shaft 31.

[0066] As shown in Figure 1 , Figure 2 , Figures 6-9 , a specific structure of a stroller frame of a child stroller is given in the embodiment:

[0067] The stroller frame comprises side supports arranged on left and right sides and a cross support assembly connected between the side supports arranged on the left and right sides.

[0068] The side support on each side comprises a front support, a rear support assembly 13, a push rod assembly 14, a side armrest 15, a lower connecting rod 16, a front connecting rod 17 and a rear pull rod 18.

[0069] The lower part of the front support is provided with a front wheel assembly. The front support is the first support 11 described above, and the front wheel assembly is the wheel assembly described above.

[0070] The rear support assembly 13 on each side comprises a rear upper rod 131 and a rear lower rod 132, and the rear lower rod 132 is slidably arranged on the rear upper rod 131 along the length extension direction of the rear upper rod 131. The lower part of the rear lower rod 132 is provided with a rear wheel assembly 6.

[0071] The lower part of the push rod assembly 14 is rotatably connected with the upper part of the side armrest 15.

[0072] Two of the lower part of the side armrest 15, the upper part of the front support 11 and the upper part of the rear upper rod 131 are rotatably connected, the third one is rotatably connected with any one of the aforementioned two, or the aforementioned three are coaxially rotatably connected. In the embodiment, the lower part of the side armrest 15 is rotatably connected with the upper part of the rear upper rod 131, and the upper part of the front support 11 is rotatably connected with the upper part of the rear upper rod 131.

[0073] One end of the lower connecting rod 16 is rotatably connected with the lower part of the push rod assembly 14, and the lower connecting rod 16 is rotatably connected with the rear upper rod 131.

[0074] One end of the front connecting rod 17 is rotatably connected with the front support 11, and the other end of the front connecting rod 17 is rotatably connected with the lower connecting rod 16.

[0075] One end of the rear pull rod 18 is rotatably connected with the lower part of the lower connecting rod 16, and the other end of the rear pull rod 18 is rotatably connected with the rear lower rod 132.

[0076] In this way, a four-bar linkage mechanism is formed between the rear upper rod 131, the side armrest 15, the push rod assembly 14 and the lower connecting rod 16 in the side bracket on each side, a four-bar linkage mechanism is formed between the front bracket 11, the rear upper rod 131, the lower connecting rod 16 and the front connecting rod 17, and a crank slider mechanism is formed between the rear upper rod 131, the rear lower rod 132, the rear pull rod 18 and the lower connecting rod 16.

[0077] The cross support assembly includes a front cross support assembly and a rear cross support assembly, the front cross support assembly is arranged between the front brackets on the left and right sides, and the rear cross support assembly is arranged between the rear lower rods 132 on the left and right sides.

[0078] The front cross support assembly includes two front cross support rods, one end of the two front cross support rods is rotatably connected, and the other end of the two front cross support rods is rotatably connected with the front bracket on the corresponding side respectively. The front cross support rod is the second bracket 12 described above, and in some embodiments, the front cross support rod can also be used as a footrest for children to step on.

[0079] The rear cross support assembly includes two rear cross support rods 19, one end of the two rear cross support rods 19 is rotatably connected, and the other end of the two rear cross support rods 19 is rotatably connected with the rear lower rod 132 on the corresponding side respectively.

[0080] The stroller frame further includes a first linkage mechanism and a second linkage mechanism, the first linkage mechanism and the second linkage mechanism are arranged on the left and right sides respectively, when the side bracket on each side is folded during folding of the child stroller, the two front cross support rods can be driven to rotate relative to each other to be folded through the first linkage mechanism on the two sides, and the two rear cross support rods 19 can be driven to rotate relative to each other to be folded through the second linkage mechanism on the two sides, so that the side brackets on the left and right sides are brought together, the child stroller is simultaneously folded longitudinally and transversely, the child stroller is convenient to fold, and the structure has a small volume after being folded.

[0081] When the child stroller is in the unfolded state, the two front cross support rods are sequentially arranged in the left-right direction, the two rear cross support rods 19 are sequentially arranged in the left-right direction, the first shaft 31 extends in the front-rear direction, the first shaft 31 is inclined relative to the horizontal plane and is inclined downwardly rearward, the second shaft 32 extends in the up-down direction, the limiting piece 4 is in the first position under the elastic force of the elastic piece 5, and the left and right wheels 22 are parallel. As shown in Figure 1 and Figure 2 .

[0082] When the stroller is folded, the push rod assembly 14 is rotated downward and forward as a whole to approach the side handle 15, so that the side handle 15 and the lower link 16 are both rotated downward, thereby pulling the front support backward to approach the rear support assembly 13 through the front link 17, and pulling the rear lower link 132 upward to approach the rear upper link 131 through the rear pull rod 18. In this process, the front cross support rod is pulled to rotate relative to the front support through the first linkage mechanism, and the rear cross support rod 19 is pulled to rotate relative to the rear lower link 132 through the second linkage mechanism, so that the left and right side supports approach each other. When the front cross support rod is rotated, the limiting piece 4 is driven to move downward until the second inclined guide surface 41 abuts against the first inclined guide surface 211a to cooperate, at which time the front cross support rod continues to rotate to fold, so that the front wheel assembly is rotated relative to the front support around the second shaft 32 to avoid interference between the front wheel assembly and the rear wheel assembly 6 or the rear support assembly 13 during folding of the stroller. The folding process is shown in Figure 6 and Figure 7 Until the components of the stroller are closely approached together, the left and right wheels 22 are inclined to each other and abut against each other, and finally folded as shown in Figure 8 and Figure 9 The stroller is compact in structure after folding, small in size, and convenient to carry and store.

[0083] During folding of the stroller and in the folded state, the limiting piece 4 can cooperate with the convex portion 211, so that the front wheel assembly can only be rotated within a certain angle range.

[0084] 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.

Claims

1. A stroller, characterized by: The child stroller has an unfolded state and a folded state, comprising a stroller frame, the stroller frame comprising a first support and a second support connected by a first shaft, the stroller frame further comprising a wheel assembly connected with the first support by a second shaft and a limiting member movably arranged on the first support; When the child stroller is in the unfolded state, the limiting member is away from the wheel assembly; when the child stroller is folded, the second support can cooperate with the limiting member to drive the limiting member to move towards the wheel assembly; the limiting member cooperates with the wheel assembly and drives the wheel assembly to rotate to avoid interference between the wheel assembly and the stroller frame when folded.

2. The stroller of claim 1, wherein: The wheel assembly is provided with a first inclined guide surface matched with the limiting member, and the limiting member is movably arranged on the first support in the vertical direction; when the child stroller is folded, the limiting member moves towards the first inclined guide surface and slides along the first inclined guide surface to drive the wheel assembly to rotate.

3. The stroller of claim 2, wherein: The first inclined guide surface is provided with two first inclined guide surfaces inclined towards opposite directions; When the limiting member slides along one of the first inclined guide surfaces, the wheel assembly is driven to rotate inwardly; when the limiting member slides along the other first inclined guide surface, the wheel assembly is driven to rotate outwardly.

4. The stroller of claim 3, wherein: The wheel assembly is provided with a protrusion protruding towards the first support, and the two first inclined guide surfaces are arranged on opposite sides of the protrusion and intersect with each other; The lower part of the limiting member is provided with a second inclined guide surface, and the second inclined guide surface can cooperate with the first inclined guide surface when the limiting member moves towards the wheel assembly; the second inclined guide surface is provided with two second inclined guide surfaces arranged on opposite sides of the limiting member and intersecting with each other.

5. The stroller of claim 1, wherein: The second support is provided with a third inclined guide surface, and the third inclined guide surface cooperates with the limiting member to move the limiting member towards the wheel assembly when the second support is folded towards the first support; The second support is provided with a clamping groove, and the upper part of the limiting member is located in the clamping groove, and the third inclined guide surface is arranged on the side wall of the clamping groove.

6. The stroller of claim 1, wherein: The first support has a support body and an extension part extending from the support body towards the inside of the support body, the second support is rotatably installed on the extension part and located inside the support body, and the wheel assembly is rotatably installed on the bottom of the extension part; The extension part has an inside edge and an outside edge arranged opposite to each other in the left-right direction, and the limiting member is arranged opposite to each other near the inside edge; In the left-right direction, the second shaft is arranged opposite to each other between the limiting member and the first shaft; The first shaft is arranged opposite to each other near the outside edge; The first shaft is inclined to the horizontal plane and inclined to the lower rear.

7. The stroller of claim 1, wherein: The child stroller further has a rear support rotatably connected with the first support, when the child stroller is folded, the first support moves towards the rear support, and the limiting member drives the wheel assembly to rotate towards a direction away from the rear support.

8. The stroller of claim 1, wherein: When the child stroller is folded and in the folded state, the limiting member is in abutting cooperation with the wheel assembly to limit the rotation angle of the wheel assembly around the second shaft; The upper part of the wheel assembly is provided with a protrusion protruding upwards, when the child stroller is folded and in the folded state, the lower part of the limiting member is in abutting cooperation with the protrusion, and the limiting member is located on the rotation path of the protrusion around the second shaft.

9. The stroller of claim 1, wherein: The limiting member is slidably arranged on the first support; The child stroller further comprises a resilient member arranged between the first support and the limiting member, and the elastic force of the resilient member is used to drive the limiting member to move away from the wheel assembly.

10. The stroller of claim 1, wherein: The first support is arranged on the left and right sides respectively, and the second support is provided with two, both of which are arranged between the first supports on the left and right sides, and the adjacent end portions of the two second supports are rotatably connected, the other end portion of each second support is rotatably connected with the first support on the corresponding side through the first shaft, and the limiting member is arranged on the inner side of the first shaft; when the child stroller is in the unfolded state, the two second supports are sequentially arranged along the left-right direction, the first shaft extends along the front-back direction, and the second shaft extends along the up-down direction; when the child stroller is folded, the two second supports are rotated towards each other to make the first supports on the left and right sides close to each other along the left-right direction; The second support is a foot pedal for children to step on; The wheel assembly corresponding to the first support is arranged on the left and right sides respectively, and the wheel assembly on each side comprises a wheel; when the child stroller is in the unfolded state, the wheels on the left and right sides are parallel to each other; When the child stroller is in the folded state, the wheels on the left and right sides are inclined to each other and abut against each other.

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