Baby stroller

Abstract

The child stroller 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 present invention relates to the technical field of children's products, and in particular to a children's stroller. Background Art

[0002] A child stroller is a very convenient means of transportation for children, and is generally used when adults take children out. Child strollers are generally foldable to facilitate carrying and storage. A child stroller generally includes a foldable frame, a front wheel installed at the front of the frame, a rear wheel installed at the rear of the frame, a locking device capable of locking the frame in an open state, and a seat pocket installed on the frame for the baby to sit on. In the prior art, when some child strollers are folded, the front wheel assembly is easy to interfere with the rear wheel assembly or the stroller frame, so that the stroller frame cannot be closely closed, and the front wheel assembly needs to be manually rotated to a certain angle before the child stroller can continue to fold, which makes the folding operation of the child stroller inconvenient. Summary of the invention

[0003] The purpose of the present invention is to provide a child stroller which is easy to fold and operate in view of the deficiencies in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A child stroller, having an unfolded state and a folded state, comprises a stroller frame, the stroller frame comprises a first bracket and a second bracket rotatably connected via a first shaft, the stroller frame further comprises a wheel assembly rotatably connected to the first bracket via a second shaft, and a stopper movably arranged on the first bracket;

[0006] When the child stroller is in an unfolded state, the limiting member is away from the wheel assembly; when the child stroller is folded, the second bracket can cooperate with the limiting member to drive the limiting member to move toward the direction close to the wheel assembly, and 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.

[0007] In some embodiments, a first inclined guide surface adapted to the limiting member is provided on the wheel assembly, and the limiting member is movably provided on the first bracket along the vertical direction; when the child stroller is folded, the limiting member moves toward the first inclined guide surface and slides relatively along the first inclined guide surface to drive the wheel assembly to rotate.

[0008] In some embodiments, two first oblique guide surfaces are provided, and the two first oblique guide surfaces are inclined in opposite directions;

[0009] When the limiting member slides along one of the first inclined guide surfaces, the wheel assembly is driven to rotate inward; when the limiting member slides along the other of the first inclined guide surfaces, the wheel assembly is driven to rotate outward.

[0010] In some embodiments, the wheel assembly is provided with a convex portion protruding toward the first bracket, and two first oblique guide surfaces are provided on opposite sides of the convex portion, and the two first oblique guide surfaces are intersectingly provided;

[0011] A second inclined guide surface is arranged at the lower part of the limit member, and when the limit member moves toward the wheel assembly, the second inclined guide surface can be abutted and cooperated with the first inclined guide surface; two second inclined guide surfaces are arranged, and the two second inclined guide surfaces are arranged on opposite sides of the limit member, and the two second inclined guide surfaces are arranged to intersect.

[0012] In some embodiments, a third inclined guide surface is provided on the second bracket, and the third inclined guide surface is abutted against and matched with the limiting member, so that when the second bracket is folded toward the first bracket, the second bracket drives the limiting member to move toward the direction close to the wheel assembly;

[0013] The second bracket is provided with a slot, the upper portion of the limiting member is located in the slot, and the third inclined guiding surface is provided on a side wall of the slot.

[0014] In some embodiments, the first bracket comprises a bracket body and an extension portion extending from the bracket body toward the inner side of the bracket body, the second bracket is rotatably mounted on the extension portion and located on the inner side of the bracket body, and the wheel assembly is rotatably mounted on the bottom of the extension portion;

[0015] The extension portion has an inner side edge and an outer side edge which are arranged opposite to each other in the left-right direction, and the limiting member is arranged at a position close to the inner side edge;

[0016] In the left-right direction, the second shaft is relatively arranged between the limiting member and the first shaft;

[0017] The first axis is relatively arranged at a position close to the outer side;

[0018] The first axis is inclined relative to a horizontal plane and is inclined toward the rear and downward.

[0019] In some embodiments, the child stroller further includes a rear bracket rotatably connected to the first bracket. When the child stroller is folded, the first bracket moves toward the rear bracket, and the limiting member drives the wheel assembly to rotate in a direction misaligned with the rear bracket.

[0020] In some embodiments, when the stroller is in the folding process and in the folded state, the limiting member is arranged to cooperate with the wheel assembly to limit the rotation angle of the wheel assembly around the second axis;

[0021] The upper part of the wheel assembly is provided with an upwardly protruding convex portion. When the stroller is in the folding process and in the folded state, the lower part of the limiting member is abutted against and matched with the convex portion, and the limiting member is located on the rotation path of the convex portion rotating around the second axis.

[0022] In some embodiments, the stopper is slidably disposed on the first bracket;

[0023] The child stroller further comprises an elastic member, which is arranged between the first bracket and the limiting member, and the elastic force of the elastic member is used to drive the limiting member to move in a direction away from the wheel assembly.

[0024] In some embodiments, the first brackets are respectively arranged on the left and right sides, and two second brackets are arranged, and the two second brackets are arranged between the first brackets on the left and right sides, and the adjacent ends of the two second brackets are rotatably connected, and the other end of each second bracket is rotatably connected to the first bracket on the corresponding side through the first axis, and the limiter is arranged on the inner side of the first axis; when the child stroller is in an unfolded state, the two second brackets are sequentially arranged along the left and right directions, the first axis extends along the front-back direction, and the second axis extends along the up-down direction; when the child stroller is folded, the two second brackets rotate together to make the first brackets on the left and right sides close to each other along the left-right direction;

[0025] The second bracket is a footrest for children to step on;

[0026] The wheel assembly is respectively arranged on the left and right sides corresponding to the first bracket, and the wheel assembly on each side includes a wheel; when the child stroller is in an unfolded state, the wheels on the left and right sides are parallel; when the child stroller is in a folded state, the wheels on the left and right sides are inclined and opposed to each other.

[0027] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: when the child stroller of the present invention is folded, the second bracket can drive the limiter to move when rotating, and the limiter can cooperate with the wheel assembly, so that the wheel assembly can automatically rotate around the second axis, so that the wheel assembly will not affect the folding of the child stroller, so that the child stroller can be smoothly folded to the final folded state. During the entire folding process, the movement of the limiter 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, making the folding operation of the child stroller convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 is a three-dimensional schematic diagram of the child stroller of this embodiment in an unfolded state;

[0029] Attached Figure 2 is a schematic side view of the child stroller of this embodiment in an unfolded state;

[0030] Attached Figure 3 This is one of the exploded schematic diagrams of the first bracket and the wheel assembly of the child stroller of this embodiment when it is in the unfolded state;

[0031] Attached Figure 4 This is a second exploded schematic diagram of the first bracket and the wheel assembly of the child stroller of this embodiment when the child stroller is in the unfolded state;

[0032] Attached Figure 5 For attachment Figure 2 A schematic cross-sectional view along line AA;

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

[0034] Attached Figure 7 is a schematic side view of the child stroller of this embodiment during the folding process;

[0035] Attached Figure 8 is a three-dimensional schematic diagram of the child stroller of this embodiment in a folded state;

[0036] Attached Fig. 9 is a front view schematic diagram of the child stroller of this embodiment in a folded state;

[0037] Attached Fig.10 It is a structural schematic diagram of the first bracket and the wheel assembly of the child stroller of this embodiment when the child stroller is in a folded state;

[0038] Attached Fig.11 For attachment Fig.10 A schematic cross-sectional view along line AA;

[0039] Attached Fig.12 For attachment Fig.10 Schematic cross-sectional view along line BB.

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

[0041] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] In the following description, the directions such as "front", "back", "left", "right", "up", and "down" are all based on Figure 2 , the left side direction in the figure is "front", the right side direction is "back", the upper side direction is "up", the lower side direction is "down", and the directions perpendicular to the paper plane in the figure are "left" and "right". The definitions of the above directions are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] like Figure 1 and Figure 2 As shown, the child stroller of the present invention 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 cart frame includes a first bracket 11 and a second bracket 12, and the first bracket 11 and the second bracket 12 are rotatably connected via a first shaft 31. When the cart frame is converted between the unfolded state and the folded state, the first bracket 11 and the second bracket 12 rotate relative to each other.

[0045] The wheel assembly is rotatably connected to the lower part of the first bracket 11 through the second shaft 32. Specifically, Figure 3 to Figure 5 As shown, the wheel assembly includes a fork 21 and a wheel 22 rotatably disposed on the fork 21, and the upper portion of the fork 21 is rotatably connected to the first bracket 11 via a second shaft 32. When the child stroller is in the unfolded state, the wheel assembly as a whole can rotate around the second shaft 32 relative to the first bracket 11 within a range of 360 degrees, thereby facilitating the steering of the child stroller during travel.

[0046] like Figure 3 to Figure 5 and Fig.11As shown, the child stroller further includes a stopper 4, which is movably disposed on the first bracket 11. When the child stroller is folded and after being folded, the stopper 4 can cooperate with the wheel assembly, thereby blocking the rotation of the wheel assembly, so that during and after the folding process of the child stroller, the wheel assembly can only rotate around the second axis 32 within a set angle range, thereby avoiding the problem that the wheel 22 is stuck in the stroller frame and needs to be manually turned when the child stroller is folded and unfolded.

[0047] In this embodiment, the first bracket 11 includes a bracket body 111 and an extension portion 112 extending from the bracket body 111 toward the inner side of the bracket body 111. The second bracket 12 is rotatably connected to the extension portion 112 via a first shaft 31, and the second bracket 12 is located on the inner side of the bracket body 111. The fork 21 is rotatably mounted at the bottom of the extension portion 112 via the second shaft 32.

[0048] The extension portion 112 has an inner side and an outer side relatively arranged in the left-right direction, the stopper 4 is relatively arranged near the inner side, and the first shaft 31 is relatively arranged near the outer side. In the left-right direction, the second shaft 32 is relatively arranged between the stopper 4 and the first shaft 31.

[0049] The limiting member 4 moves relative to the first bracket 11 and has a first position and a second position. When the child stroller is in the unfolded state, the limiting member 4 is in the first position in the first bracket 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 movement of the child stroller. Figure 5 When the stroller is folded, the limiting member 4 moves from the first position to the second position. After the limiting member 4 moves a certain distance, the limiting member 4 can cooperate with the wheel assembly. When the stroller is in the folded state, the limiting member 4 is in the second position in the first bracket 11. At this time, the limiting member 4 cooperates with the wheel assembly, as shown in FIG. Fig.11 and Fig.12 Therefore, during and after the folding of the stroller, the limiting member 4 can block the rotation of the wheel assembly, so that the wheel assembly can only rotate around the second axis 32 within a certain angle range.

[0050] Specifically, Figure 4 and Figure 5 As shown, the upper part of the wheel fork 21 is provided with a convex portion 211 convex upward, and the convex portion 211 is eccentrically arranged relative to the second axis 32. When the child stroller is folded, the limiting member 4 can move to abut against the convex portion 211, and the limiting member 4 is located on the rotation path of the convex portion 211 rotating around the second axis 32. In this way, when the convex portion 211 rotates around the second axis 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 portion 211 b and a second limiting portion 211 c which abut against the limiting member 4 to limit the rotational travel of the wheel assembly. The first limiting portion 211 b and the second limiting portion 211 c are arranged on opposite sides of the convex portion 211 .

[0052] The upper portion of the wheel fork 21 further has a recessed portion 212 that is recessed relative to the convex portion 211 . The recessed portion 212 is located beside the convex portion 211 in the circumferential direction. When the child stroller is folded, the limiting member 4 moves to the recessed portion 212 toward the wheel assembly.

[0053] In this embodiment, if Fig.12 As shown, a column 213 is provided at the upper part of the wheel fork 21, and the column 213 is inserted into the first bracket 11. The recessed portion 213 is located on the outer side of the column 213 and is recessed downward from the upper end surface of the outer side of the column 213. The recessed portion 212 extends along the circumferential direction. When the child stroller is in a folded state, the lower part of the limiter 4 is inserted into the recessed portion 212, and the convex portion 211 is fixedly disposed in the recessed portion 212. When the wheel assembly rotates around the second axis 32, the limiter 4 moves along the extension direction of the recessed portion 212. When the convex portion 211 abuts against the limiter 4, the wheel assembly cannot continue to rotate.

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

[0055] In this embodiment, the limiting member 4 is slidably disposed in the first bracket 11 , and the limiting member 4 is switched between the first position and the second position by sliding the limiting member 4 up and down relative to the first bracket 11 .

[0056] After the stroller is folded to a certain angle, the wheel assembly may interfere with other parts of the stroller, making it impossible to fold the stroller further. In this case, the wheel assembly needs to be manually rotated around the second axis 32 to a certain angle before the stroller can be folded further. Based on this, in this embodiment, when the stroller folding limiter 4 is converted from the first position to the second position, the limiter 4 cooperates with the convex portion 211 to drive the wheel assembly to automatically rotate around the second axis 32 relative to the first bracket 11 to a certain angle. This can prevent the wheel assembly from interfering with other parts of the stroller during the folding process, making it impossible to fold the stroller further, making the structure volume of the stroller smaller after folding, and making the folding operation of the stroller simpler and more convenient.

[0057] Specifically, Figure 3 and Figure 4As shown, the upper part of the protrusion 211 is provided with a first oblique guide surface 211a, and the lower part of the stopper 4 is provided with a second oblique guide surface 41 adapted to the first oblique guide surface 211a. When the stopper 4 is in the first position, the second oblique guide surface 41 is away from the first oblique guide surface 211a. When the stopper 4 moves a certain distance from the first position to the second position, the second oblique guide surface 41 is abutted against and matched with the first oblique guide surface 211a, so that when the stopper 4 continues to move to the second position, the second oblique guide surface 41 can act on the first oblique guide surface 211a, thereby driving the wheel assembly to automatically rotate around the second axis 32 relative to the first bracket 11.

[0058] There are two first oblique guide surfaces 211a, which intersect and tilt toward opposite sides. Correspondingly, there are two second oblique guide surfaces 41, which intersect and tilt toward opposite sides.

[0059] When the stroller is folded from the unfolded state, one second oblique guide surface 41 abuts against and cooperates with the first oblique guide surface 211a at the corresponding position to drive the wheel assembly to automatically rotate around the second axis 32 toward the inner side of the stroller frame. When the stroller is unfolded from the folded state, another second oblique guide surface 41 abuts against and cooperates with the first oblique guide surface 211a at the corresponding position to drive the wheel assembly to automatically rotate around the second axis 32 toward the outer side of the stroller frame.

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

[0061] When the stroller is folded, the second bracket 12 rotates relative to the first bracket 11, and the second bracket 12 can act on the limiting member 4, thereby driving the limiting member 4 to move relative to the first bracket 11, and then move 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 bracket 11, making the folding operation of the stroller simple.

[0062] Specifically, the second bracket 12 is provided with a third oblique guide surface 121a, which is abutted against and matched with the stopper 4. When the second bracket 12 rotates relative to the first bracket 11 when the stroller is folded, the third oblique guide surface 121a acts on the stopper 4, thereby driving the stopper 4 to move relative to the first bracket 11.

[0063] In this embodiment, a slot 121 is provided on the second bracket 12 , the upper portion of the limiter 4 is located in the slot 121 , the third inclined guiding surface 121 a is provided on the side wall of the slot 121 , and the third inclined guiding surface 121 a abuts against the upper portion of the limiter 4 .

[0064] The child stroller further comprises an elastic member 5, one end of which is arranged on the first bracket 11, and the other end of which is arranged on the limiting member 4. The elastic force of the elastic member 5 is used to drive the limiting member 4 to remain in the first position.

[0065] The first bracket 11 has an inner side and an outer side which are arranged opposite to each other in the left-right direction. The second bracket 12 is relatively rotatably mounted on the inner side of the first bracket 11 . The stopper 4 is relatively arranged on the inner side of the first shaft 31 .

[0066] like Figure 1 , Figure 2 , Figure 6 to Figure 9 As shown, in this embodiment, a specific structure of a stroller frame of a child stroller is provided:

[0067] The cart frame comprises side brackets located at left and right sides and a cross brace assembly connected between the side brackets at the left and right sides.

[0068] The side bracket on each side includes: a front bracket, a rear bracket 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 above-mentioned first support 11, and the front wheel assembly is the above-mentioned wheel assembly.

[0070] The rear support assembly 13 on each side includes a rear upper rod 131 and a rear lower rod 132. 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 rear wheel assembly 6 is arranged at the lower part of the rear lower rod 132.

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

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

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

[0074] One end of the front link 17 is rotatably connected to the front bracket 11 , and the other end of the front link 17 is rotatably connected to the lower link 16 .

[0075] One end of the rear tie rod 18 is rotatably connected to the lower portion of the lower link 16 , and the other end of the rear tie rod 18 is rotatably connected to the rear lower rod 132 .

[0076] In this way, in the side bracket on each side, a four-bar linkage is formed between the rear upper rod 131, the side armrest 15, the push rod assembly 14 and the lower connecting rod 16, a four-bar linkage 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 brace assembly includes a front cross brace assembly and a rear cross brace assembly. The front cross brace assembly is arranged between the front brackets on the left and right sides, and the rear cross brace assembly is arranged between the rear lower rods 132 on the left and right sides.

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

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

[0080] The stroller frame also includes a first linkage mechanism and a second linkage mechanism, which are respectively arranged on the left and right sides. When the side brackets on each side are folded during the folding process of the stroller, the first linkage mechanisms on both sides can drive the two front cross braces to rotate and fold relatively, and the second linkage mechanisms on both sides can drive the two rear cross braces 19 to rotate and fold relatively, so that the side brackets on the left and right sides are brought closer together, so that the stroller can be folded longitudinally and transversely at the same time, making the stroller easy to fold and the structure small in size after folding.

[0081] When the stroller is in the unfolded state, the two front cross braces are arranged in sequence along the left-right direction, and the two rear cross braces 19 are arranged in sequence along the left-right direction; the first axis 31 extends in the front-back direction, and the first axis 31 is inclined relative to the horizontal plane and is inclined toward the rear and lower side; the second axis 32 extends in the up-down direction; the stopper 4 is in the first position under the elastic force of the elastic member 5; the wheels 22 on the left and right sides are parallel. Figure 1 and Figure 2 shown.

[0082] When the stroller is folded, the push rod assembly 14 is rotated downward and forward as a whole to be close to the side armrest 15, so that the side armrest 15 and the lower connecting rod 16 are both rotated downward, thereby pulling the front bracket backward and close to the rear bracket assembly 13 through the front connecting rod 17, and pulling the rear lower rod 132 upward relative to the rear upper rod 131 through the rear pull rod 18 to be close to the rear upper rod 131. In this process, the front cross brace is pulled to rotate relative to the front bracket through the first linkage mechanism, and the rear cross brace 19 is pulled to rotate relative to the rear lower rod 132 through the second linkage mechanism, so that the side brackets on the left and right sides are close to each other. When the front cross brace rotates, the limit member 4 is driven to move downward until the second inclined guide surface 41 is abutted against the first inclined guide surface 211a. At this time, when the front cross brace continues to rotate and fold, the front wheel assembly rotates around the second axis 32 relative to the front bracket to avoid interference between the front wheel assembly and the rear wheel assembly 6 or the rear bracket assembly 13 during the folding process of the stroller. The folding process is as follows: Figure 6 and Figure 7 Until all the components of the stroller are closely together, the wheels 22 on the left and right sides are tilted and abutted against each other, and finally folded as shown. Figure 8 and Fig. 9 After being folded, the stroller has a compact structure and a small size, and is easy to carry and store.

[0083] When the stroller is in the folding process or in the folded state, the limiting member 4 can cooperate with the protrusion 211 so that the front wheel assembly can only rotate within a certain angle range.

[0084] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A baby stroller, characterized in that: The trolley has an unfolded state and a folded state, and includes a trolley frame, wherein the trolley frame includes a first bracket and a second bracket rotatably connected via a first axis, and the trolley frame also includes a wheel assembly rotatably connected to the first bracket via a second axis and a stopper movably arranged on the first bracket; When the child stroller is in an unfolded state, the limiting member is away from the wheel assembly; when the child stroller is folded, the second bracket can cooperate with the limiting member to drive the limiting member to move toward the direction close to the wheel assembly, and 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 baby stroller according to claim 1, characterized in that: The wheel assembly is provided with a first inclined guide surface adapted to the limiting member, and the limiting member is movably provided on the first bracket along the vertical direction; when the child stroller is folded, the limiting member moves toward the first inclined guide surface and slides relatively along the first inclined guide surface to drive the wheel assembly to rotate.

3. The stroller according to claim 2, characterized in that: There are two first oblique guide surfaces, and the two first oblique guide surfaces are inclined in opposite directions; When the limiting member slides along one of the first inclined guide surfaces, the wheel assembly is driven to rotate inward; when the limiting member slides along the other of the first inclined guide surfaces, the wheel assembly is driven to rotate outward.

4. The stroller according to claim 3, characterized in that: The wheel assembly is provided with a convex portion protruding toward the first bracket, and two first oblique guide surfaces are provided on opposite sides of the convex portion, and the two first oblique guide surfaces are intersectingly provided; A second inclined guide surface is arranged at the lower part of the limit member, and when the limit member moves toward the wheel assembly, the second inclined guide surface can be abutted and cooperated with the first inclined guide surface; two second inclined guide surfaces are arranged, and the two second inclined guide surfaces are arranged on opposite sides of the limit member, and the two second inclined guide surfaces are arranged to intersect.

5. The baby stroller according to claim 1, characterized in that: The second bracket is provided with a third inclined guide surface, and the third inclined guide surface is matched with the limiting member, so that when the second bracket is folded toward the first bracket, the second bracket drives the limiting member to move toward the direction close to the wheel assembly; The second bracket is provided with a slot, the upper portion of the limiting member is located in the slot, and the third inclined guiding surface is provided on a side wall of the slot.

6. The stroller according to claim 1, characterized in that: The first bracket comprises a bracket body and an extension portion extending from the bracket body toward the inner side of the bracket body, the second bracket is rotatably mounted on the extension portion and located on the inner side of the bracket body, and the wheel assembly is rotatably mounted on the bottom of the extension portion; The extension portion has an inner side edge and an outer side edge which are arranged opposite to each other in the left-right direction, and the limiting member is arranged at a position close to the inner side edge; In the left-right direction, the second shaft is relatively arranged between the limiting member and the first shaft; The first axis is relatively arranged at a position close to the outer side; The first axis is inclined relative to a horizontal plane and is inclined toward the rear and downward.

7. The stroller according to claim 1, characterized in that: The stroller also has a rear bracket rotatably connected to the first bracket. When the stroller is folded, the first bracket moves toward the direction approaching the rear bracket, and the limiting member drives the wheel assembly to rotate in a direction misaligned with the rear bracket.

8. The stroller according to claim 1, characterized in that: When the stroller is in the folding process and in the folded state, the limiting member is arranged to cooperate with the wheel assembly to limit the rotation angle of the wheel assembly around the second axis; The upper part of the wheel assembly is provided with an upwardly protruding convex portion. When the stroller is in the folding process and in the folded state, the lower part of the limiting member is abutted against and matched with the convex portion, and the limiting member is located on the rotation path of the convex portion rotating around the second axis.

9. The baby stroller according to claim 1, characterized in that: The limiting member is slidably disposed on the first bracket up and down; The child stroller further comprises an elastic member, wherein the elastic member is arranged between the first bracket and the limiting member, and the elastic force of the elastic member is used to drive the limiting member to move in a direction away from the wheel assembly.

10. The baby stroller according to claim 1, characterized in that: The first brackets are respectively arranged on the left and right sides, and two second brackets are arranged. The two second brackets are arranged between the first brackets on the left and right sides, and one end of the two second brackets adjacent to each other is rotatably connected. The other end of each second bracket is rotatably connected to the first bracket on the corresponding side through the first axis, and the limiter is arranged on the inner side of the first axis; when the child stroller is in an unfolded state, the two second brackets are sequentially arranged along the left and right directions, the first axis extends along the front-back direction, and the second axis extends along the up-down direction; when the child stroller is folded, the two second brackets rotate together to make the first brackets on the left and right sides close to each other along the left-right direction; The second bracket is a footrest for children to step on; The wheel assembly is respectively arranged on the left and right sides corresponding to the first bracket, and the wheel assembly on each side includes a wheel; when the baby stroller is in an unfolded state, the wheels on the left and right sides are parallel; When the baby stroller is in a folded state, the wheels on the left and right sides are inclined and opposed to each other.

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