Stroller

Abstract

The application discloses a child stroller, which has an unfolded state and a folded state, and comprises a connecting frame, a front support, a rear support and an upper support assembly. In the unfolded state, the upper support assembly is arranged above the connecting frame, the bottom of the front support is provided with a front wheel assembly, and the rear support has two groups, and the lower part of each group of the rear support is provided with a rear wheel assembly. During the conversion of the child stroller from the unfolded state to the folded state, the front support and the rear support are flipped and folded below the connecting frame along the front-rear direction, the distance between the two groups of rear wheel assemblies along the left-right direction is reduced, the front wheel assembly is located between the two groups of rear wheel assemblies along the left-right direction, and the upper support assembly is folded above the connecting frame and located between the two groups of rear wheel assemblies along the left-right direction. The folded stroller has a small volume and a greatly reduced overall width, and is convenient for daily storage and carrying of users.

Description

Technical Field

[0001] This invention relates to the field of children's products, and more specifically to a children's stroller. Background Technology

[0002] Existing strollers have a variety of structures, with different numbers of rods and connections. Consequently, their folding principles, folded shapes, and folded dimensions also vary. The goal that has been continuously pursued by those skilled in the art is to make the stroller frame as simple as possible and to minimize its folded size while ensuring good stability and normal performance.

[0003] Currently, some tricycles on the market, such as those commonly known as treadmills, have a large gap between the two sets of rear wheel components, and the overall width of the vehicle is still large even when folded. This results in the treadmill still being quite bulky when folded, making it inconvenient for users to store and carry on a daily basis. Summary of the Invention

[0004] The purpose of this invention is to provide a novel stroller with a new structure to solve one or more problems of the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a child stroller having an unfolded state and a folded state; in the unfolded state, the child stroller includes:

[0006] A connecting frame that extends in a front-to-back direction;

[0007] A front bracket, the bottom of which is provided with a front wheel assembly, and the upper part of which is rotatably connected to the front part of the connecting frame;

[0008] The rear support has two sets of rear supports respectively located on the left and right sides of the connecting frame. Each set of rear supports has a rear wheel assembly at its lower part and the upper part of the rear support is connected to the rear part of the connecting frame.

[0009] An upper support assembly is disposed above the connecting frame, and the upper support assembly can be folded in both the left-right and up-down directions;

[0010] During the transition of the stroller from the unfolded state to the folded state, the front support and the rear support flip towards each other in the front-to-back direction and fold under the connecting frame. The distance between the two sets of rear wheel assemblies in the left-to-right direction decreases. The front wheel assembly is located between the two sets of rear wheel assemblies in the left-to-right direction. The upper support assembly is folded above the connecting frame and is located between the two sets of rear wheel assemblies in the left-to-right direction.

[0011] Preferably, in the stroller, the rear wheel assembly includes a rear wheel seat and a rear wheel rotatably mounted on the rear wheel seat via a rear wheel axle extending in a left-right direction. The rear support includes two parallel rear support rods extending in a vertical direction. The two rear support rods are arranged one in front of the other between the connecting frame and the rear wheel seat. The upper part of the rear support rod is rotatably connected to the rear part of the connecting frame, and the lower part of the rear support rod is rotatably connected to the rear wheel seat. The stroller also includes a sliding member slidably mounted on the connecting frame in a front-back direction and two sets of pull rods disposed on the left and right sides. On each side of the stroller, one end of the pull rod is rotatably connected to the sliding member, and the other end of the pull rod is rotatably connected to one of the rear support rods.

[0012] Furthermore, when the stroller is in the unfolded state, the rear support rod extends outward from top to bottom at an angle. The rotation axis between the pull rod and the sliding member, the rotation axis between the pull rod and the rear support rod, the rotation axis between the rear support rod and the connecting frame, and the rotation axis between the rear support rod and the rear wheel seat are parallel to each other and all extend downward from the outside to the inside in the left-right direction.

[0013] Preferably, as the slider slides forward along the connecting frame, it causes the upper support assembly to fold and the front support to flip backward and retract relative to the connecting frame.

[0014] More preferably, the upper support assembly includes at least a connecting seat, a side rod frame, and a support frame. The front support is rotatably connected to the front of the connecting frame about a first axis. The connecting seat is rotatably connected to the upper part of the front support about a second axis. The first axis and the second axis are parallel to each other and both extend in the left-right direction. The second axis is located above the first axis. The side rod frame includes two side rods respectively disposed on the left and right sides and both extending in the up-down direction. The support frame includes two support rods respectively disposed on the left and right sides and both extending in the up-down direction. On each side of the stroller, the lower part of the side rod is rotatably connected to the connecting seat about a third axis. The upper part of the side rod is rotatably connected to the upper part of the support rod about a fourth axis. The lower part of the support rod is rotatably connected to the sliding member about a fifth axis. The third axis, the fourth axis, and the fifth axis are parallel to each other and all extend gradually upward from the outside to the inside in the left-right direction.

[0015] Furthermore, the upper support assembly also includes a push rod frame and a push handle frame. The push rod frame includes two push rods respectively disposed on the left and right sides and extending in the vertical direction. The push handle frame includes two push handle rods respectively disposed on the left and right sides. The push handle rods bend inward from bottom to top, and one end of the push handle rods on both sides is rotatably connected around a sixth axis.

[0016] Preferably, on each side of the stroller, the upper part of the push rod is rotatably connected to the other end of the push handle about a seventh axis, the sixth axis is parallel to the seventh axis and perpendicular to the length extension direction of the push rod, and the lower part of the push rod is rotatably connected to the upper part of the side rod about an eighth axis, the eighth axis being parallel to the first axis.

[0017] Preferably, when the stroller is in a folded state, the push rod frame, the side rod frame, the support rod frame, and the connecting frame are stacked sequentially in the vertical direction, and the push handle frame is folded between the push rods on both sides and stacked above the side rod frame at the same height as the push rod frame.

[0018] Furthermore, when the stroller is in the unfolded state, the front support, the connecting seat, the side rod frame, the push rod frame, and the push handle frame extend upwards from front to back along the same length direction.

[0019] Preferably, when the stroller is in the unfolded state, the support rod gradually tilts backward from bottom to top, and the rear of the connecting frame is also provided with a handle for gripping.

[0020] Furthermore, when the stroller is in a folded state, the front support and the rear wheel assemblies on both sides are supported on the ground.

[0021] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the upper support assembly of the stroller of the present invention can be folded in the left and right direction. After folding, the distance between the two sets of rear wheel assemblies of the stroller is greatly reduced, and the width of the whole stroller is also greatly reduced, making the stroller smaller in size after folding, which is convenient for users to store and carry on a daily basis. Attached Figure Description

[0022] Appendix Figure 1 This is a three-dimensional structural diagram of a children's stroller in its unfolded state according to a specific embodiment of the present invention;

[0023] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of the rotation center lines of various structures in a children's stroller;

[0024] Appendix Figure 3 For the appendix Figure 1 A schematic diagram after removing the front and rear wheel assemblies;

[0025] Appendix Figure 4 For the appendix Figure 1 An exploded view of some components of a children's stroller;

[0026] Appendix Figure 5For the appendix Figure 1 An exploded view of another component of the stroller;

[0027] Appendix Figure 6 For the appendix Figure 1 A side view of the stroller in the first stage of the folding process;

[0028] Appendix Figure 7 For the appendix Figure 1 The front view of the stroller in the first stage of the folding process;

[0029] Appendix Figure 8 For the appendix Figure 1 The side view of the stroller in the second stage of the folding process;

[0030] Appendix Figure 9 For the appendix Figure 1 The front view of the stroller in the second stage of the folding process;

[0031] Appendix Figure 10 For the appendix Figure 1 The side view of the stroller in the third stage of the folding process;

[0032] Appendix Figure 11 For the appendix Figure 1 The front view of the stroller in the third stage of the folding process;

[0033] Appendix Figure 12 For the appendix Figure 1 The side view of the stroller in the fourth stage of the folding process;

[0034] Appendix Figure 13 For the appendix Figure 1 The stroller is in the fourth stage of the folding process, front view;

[0035] Appendix Figure 14 For the appendix Figure 1 The stroller is converted into a side view in its folded state;

[0036] Appendix Figure 15 For the appendix Figure 1 The stroller is converted to a front view when folded.

[0037] Appendix Figure 16 For the appendix Figure 1 A 3D structural diagram of a children's stroller in its folded state;

[0038] in:

[0039] 1. Connecting frame; 2. Front bracket; 21. Front support rod; 3. Rear bracket; 31. First rear support rod; 32. Second rear support rod;

[0040] 4. Upper bracket assembly; 41. Connecting seat; 42. Side rod; 421. Side rod; 43. Support frame; 431. Support rod; 44. Push rod frame; 441. Push rod; 45. Push handle frame; 451. Push handle lever;

[0041] 5. Rear wheel assembly; 51. Rear wheel mount; 52. Rear wheel; 53. Rear wheel axle

[0042] 6. Sliding component; 7. Tie rod; 8. Front wheel assembly; 81. Front wheel; 82. Front wheel axle;

[0043] X1, First axis line; X2, Second axis line; X3, Third axis line; X4, Fourth axis line; X5, Fifth axis line; X6, Sixth axis line; X7, Seventh axis line; X8, Eighth axis line; X9, Ninth axis line; X10, Tenth axis line; X11, Eleventh axis line; X12, Twelfth axis line; X13, Thirteenth axis line; X14, Fourteenth axis line. Detailed Implementation

[0044] The following descriptions of directions, such as up, down, left, right, front, back, inside, and outside, are defined according to the orientation observed by the person pushing the stroller when it is in the unfolded state. The purpose is solely to clearly illustrate the relative positional relationships of the various lever components on the stroller.

[0045] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] See Figures 1 to 12 The stroller shown has an unfolded state and a folded state. In the unfolded state, the stroller includes:

[0047] Connecting frame 1, which extends in the front-to-back direction;

[0048] The front bracket 2 has a front wheel assembly 8 at its bottom and its upper part is rotatably connected to the front part of the connecting frame 1.

[0049] The rear support 3 has two sets located on the left and right sides of the connecting frame 1. Each set of rear support 3 has a rear wheel assembly 5 at its lower part and the upper part of the rear support 3 is connected to the rear part of the connecting frame 1.

[0050] The upper support assembly 4 is disposed above the connecting frame 1 and can be folded in both the left-right and up-down directions.

[0051] During the transition of the stroller from the unfolded state to the folded state, the front support 2 and the rear support 3 flip towards each other in the front-to-back direction and fold under the connecting frame 1. The distance between the two sets of rear wheel assemblies 5 in the left-to-right direction decreases. The front wheel assembly 8 is located between the two sets of rear wheel assemblies 5 in the left-to-right direction. The upper support assembly 4 is folded above the connecting frame 1 and is located between the two sets of rear wheel assemblies 5 in the left-to-right direction.

[0052] Referring to the accompanying drawings, the specific structural configuration of each part of the stroller in this embodiment is as follows:

[0053] In this embodiment, the front support 2 has two sets of front struts 21, which are respectively disposed on the left and right sides and extend upward from front to back. The distance between the lower parts of the two front struts 21 is smaller than the distance between the upper parts of the two front struts 21, so that the front support 2 forms a fork shape. There is one set of front wheel assembly 8, which is disposed between the lower parts of the two sets of front struts 21. The front wheel assembly 8 includes a front wheel 81 rotatably mounted on the lower part of the front strut 21 by a front wheel axle 82 extending about the left and right direction.

[0054] The stroller also includes a slider 6 that can slide along the connecting frame 1 in the front-to-back direction. As the slider 6 slides forward along the connecting frame 1, it causes the upper support assembly 4 to fold, and causes the front support 2 to flip backward and close relative to the connecting frame 1, and the two rear supports 3 to flip forward and close relative to the connecting frame 1.

[0055] Referring to the accompanying drawings, in this embodiment, the upper support assembly 4 includes at least a connecting seat 41, a side rod frame 42, a support rod frame 43, a push rod frame 44, and a push handle frame 45. When the stroller is in the unfolded state, the front support 2, connecting seat 41, side rod frame 42, push rod frame 44, and push handle frame 45 extend upwards from front to back along the same length direction. The front support 2 is rotatably connected to the front of the connecting frame 1 about a first axis X1. The connecting seat 41 is rotatably connected to the upper part of the front support 2 about a second axis X2. The first axis X1 and the second axis X2 are parallel to each other and both extend in the left-right direction. The second axis X2 is located above the first axis X1.

[0056] The side rod frame 42 includes two side rods 421 located on the left and right sides and extending in the vertical direction. The support frame 43 includes two support rods 431 located on the left and right sides and extending in the vertical direction. On each side of the stroller, the lower part of the side rod 421 is rotatably connected to the connecting seat 41 around the third axis X3. The upper part of the side rod 421 is rotatably connected to the upper part of the support rod 431 around the fourth axis X4. The lower part of the support rod 431 is rotatably connected to the sliding member 6 around the fifth axis X5. The third axis X3, the fourth axis X4 and the fifth axis X5 are parallel to each other and extend upward from the outside to the inside in the left and right direction.

[0057] The push rod frame 44 includes two push rods 441 located on the left and right sides and extending in the vertical direction. The push handle frame 45 is a U-shaped rod with an opening facing forward. The push handle frame 45 includes two push handle rods 451 located on the left and right sides. The push handle rods 451 extend inward from bottom to top. One end of the push handle rods 451 on both sides is rotatably connected around the sixth axis X6. On each side of the stroller, the upper part of the push rod 441 is rotatably connected to the other end of the push handle rod 451 around the seventh axis X7. The sixth axis X6 and the seventh axis X7 are parallel to each other and perpendicular to the length extension direction of the push rod 441. The lower part of the push rod 441 is rotatably connected to the upper part of the side rod 421 around the eighth axis X8. The eighth axis X8 is parallel to the first axis X1.

[0058] See Figures 1 to 3 As shown, in the unfolded state, two sets of rear supports 3 are distributed on both sides of the connecting frame 1 along the left-right direction. Each rear support 3 includes two parallel rear support rods 31 and 32 that extend vertically. The two rear support rods 31 and 32 extend outwards from top to bottom. The distance between the upper parts of the two sets of rear supports 3 is smaller than the distance between the lower parts of the two sets of rear supports 3. Each set of rear supports 3 has a rear wheel assembly 5 at its lower part. Each set of rear wheel assembly 5 includes a rear wheel seat 51 and a rear wheel 52 rotatably mounted on the rear wheel seat with a rear wheel axle 53 extending around the left-right direction. The diameter of the rear wheel 52 is larger than that of the front wheel 81. The two rear support rods 31 and 32 of each rear support 3 are arranged one in front of the other between the connecting frame 1 and the rear wheel seat 51 on that side. The upper parts of the rear support rods 31 and 32 are rotatably connected to the rear part of the connecting frame 1, and the lower parts of the rear support rods 31 and 32 are rotatably connected to the rear wheel seat 51 on the same side. Specifically, the rear support rod 31 is located behind the rear support rod 32. The upper part of the rear support rod 31 is rotatably connected to the connecting frame 1 around the eleventh axis X11, and the lower part is rotatably connected to the rear wheel seat 51 around the twelfth axis X12. The upper part of the rear support rod 32 is rotatably connected to the connecting frame 1 around the thirteenth axis X13, and the lower part is rotatably connected to the rear wheel seat 51 around the fourteenth axis X14.

[0059] The stroller also includes two sets of pull rods 7 located on the left and right sides. On each side of the stroller, the upper end of the pull rod 7 is rotatably connected to the sliding member 6 around the ninth axis X9, and the lower end of the pull rod 7 is rotatably connected to the rear support rod 31 around the tenth axis X10. Of course, in other embodiments, the lower end of the pull rod 7 can also be rotatably connected to the rear support rod 32.

[0060] See Figures 1 to 5As shown, when the stroller is in the unfolded state, the ninth axis line X9 between the pull rod 7 and the sliding member 6, the tenth axis line X10 between the pull rod 7 and the rear support rod 31, the rotation axis lines X11 and X13 between the rear support 3 and the connecting frame 1, and the rotation axis lines X12 and X14 between the rear support 3 and the rear wheel seat 51 are parallel to each other and all extend downward from the outside to the inside in the left and right direction.

[0061] In this embodiment, the upper end of the pull rod 7 and the lower end of the support rod 431 are rotatably connected to the sliding member 6 around the ninth axis X9 and the fifth axis X5, respectively. In other embodiments, the sliding member 6 can be divided into two parts, which are connected to the pull rod 7 and the support rod 431, respectively.

[0062] The stroller is in the unfolded state, see Figures 1 to 3 As shown, the front bracket 2, connecting seat 41, side rod bracket 42, push rod bracket 44 and push handle bracket 45 extend upward from front to back along the same length direction. The side rod bracket 42, push rod bracket 44 and push handle bracket 45 are located on the upper part of the rear wheel assembly 5. The connecting frame 1 extends in the front-rear direction. In the front-rear direction, the connecting frame 1 is located between the front wheel assembly 8 and the rear wheel assembly 5. The sliding member 6 is located at the rear of the connecting frame 1. The support rods 431 on the left and right sides of the support rod bracket 43 extend backward from bottom to top. The rear support rods 31 and 32 extend outward from top to bottom. The front bracket 2 and the front wheel assembly 8 are located at the front of the connecting frame 1.

[0063] When it is necessary to fold the cart, see [link to relevant documentation]. Figure 6 , Figure 7 As shown, pushing the push handle 451 downwards along the length of the push handle frame 44 causes the push handles 451 on both sides to rotate forward around the seventh axis X7 on each side. The push handle frame 45 retracts between the push handles 441 on both sides, ultimately achieving... Figure 8 , Figure 9 The state shown; then the push rod 441 is driven to fold forward around the eighth axis X8, and the push handle frame 45 and the push rod frame 44 stack together above the side frame 42, achieving Figure 10 , Figure 11In the indicated state, the push handle frame 45 and the push rod frame 44 are always located on the same layer on the side rod frame 42; the sliding member 6 is driven to slide forward along the length direction of the connecting frame 1, the sliding member 6 drives the lower part of the support frame 43 to move forward, the support frame 43 drives the side rod frame 42 connected to it to rotate around the third axis X3, so that the side rods 421 on both sides of the side rod frame 42 fold inward, at the same time the sliding member 6 drives the upper part of the pull rod 7 to move forward along the connecting frame 1, the pull rod 7 drives the rear support rod 31 connected to it to rotate forward around the eleventh axis X11, the other rear support rod 32 rotates forward around the thirteenth axis X13 and always remains parallel to the rear support rod 31, the rear bracket 3 retracts downward towards the connecting frame 1 and drives the rear wheel assembly 5 to move forward, at the same time the rear wheel assemblies 5 on the left and right sides retract inward, achieving Figure 12 , Figure 13 As shown in the diagram; the slider 6 continues to slide forward, causing the front bracket 2 to rotate backward around the first axis X1 and retract downward towards the connecting frame 1, the rear bracket 3 continues to flip forward and retract downward towards the connecting frame 1, and at the same time, the two sets of rear wheel assemblies 5 continue to move forward and retract inward in the left and right directions, the front bracket 2 drives the connecting seat 41 of the upper bracket assembly 4 connected to it to flip forward around the first axis X1, causing the stacked upper bracket assembly 4 to move forward, and at the same time, the upper bracket assembly 4 retracts inward in the left and right directions.

[0064] When the stroller is finally folded, see [link / reference]. Figures 14 to 16 As shown, the slider 6 slides to the front of the connecting frame 1, the upper bracket assembly 4 is folded above the connecting frame 1 and is located between the two sets of rear wheel assemblies 5 in the left and right direction, the push rod frame 44, the side rod frame 42, the support rod frame 43 and the connecting frame 1 are stacked in the up and down direction, the push handle frame 45 is folded between the push rods 441 on both sides and stacked at the same height as the push rod frame 441 above the side rod frame 42, the front bracket 2 is folded below the connecting frame 1, the front wheel assembly 8 is located between the two sets of rear wheel assemblies 5 in the left and right direction, and the front bracket 2 and the rear wheel assemblies 5 on both sides are supported on the ground.

[0065] (Not shown in the illustration) In this embodiment, the connecting frame 1 is also provided with a handle for gripping. During the folding process, the sliding member 6 can be driven to slide forward along the connecting frame 1 by lifting the handle to fold the stroller. Thus, folding the stroller basically only requires three steps: push forward to fold the push handle frame 45, flip the push rod frame 44 to fold, and then lift the handle to complete the folding operation of the entire stroller. The operation is very simple and convenient.

[0066] In summary, the stroller's volume is significantly reduced when folded compared to its unfolded state. In particular, because the upper support assembly 4 can be folded in the left and right directions, the lateral distance between the two sets of rear wheel assemblies 5 is greatly reduced after folding, which brings great convenience to users for daily carrying, use, and storage.

[0067] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A stroller for children, having an unfolded state and a folded state, characterized in that: In its unfolded state, the stroller includes: A connecting frame that extends in a front-to-back direction; A front bracket, the bottom of which is provided with a front wheel assembly, and the upper part of which is rotatably connected to the front part of the connecting frame; The rear support has two sets of rear supports respectively located on the left and right sides of the connecting frame. Each set of rear supports has a rear wheel assembly at its lower part and the upper part of the rear support is connected to the rear part of the connecting frame. An upper support assembly is disposed above the connecting frame, and the upper support assembly can be folded in both the left-right and up-down directions; During the process of the stroller transitioning from an unfolded state to a folded state, the front support and the rear support flip towards each other in the front-to-back direction and fold under the connecting frame. The distance between the two sets of rear wheel assemblies in the left-to-right direction decreases. The front wheel assembly is located between the two sets of rear wheel assemblies in the left-to-right direction. The upper support assembly is folded above the connecting frame and is located between the two sets of rear wheel assemblies in the left-to-right direction. The rear wheel assembly includes a rear wheel seat and a rear wheel rotatably mounted on the rear wheel seat via a rear wheel axle extending in a left-right direction. The rear support includes two parallel rear support rods extending in a vertical direction. The two rear support rods are arranged one in front of the other between the connecting frame and the rear wheel seat. The upper part of the rear support rod is rotatably connected to the rear part of the connecting frame, and the lower part of the rear support rod is rotatably connected to the rear wheel seat. The stroller also includes a sliding member that can slide in a front-back direction on the connecting frame and two sets of pull rods located on the left and right sides. On each side of the stroller, one end of the pull rod is rotatably connected to the sliding member, and the other end of the pull rod is rotatably connected to one of the rear support rods.

2. The stroller according to claim 1, characterized in that: When the stroller is in the unfolded state, the rear support rod extends outward from top to bottom at an angle. The rotation axis between the pull rod and the sliding member, the rotation axis between the pull rod and the rear support rod, the rotation axis between the rear support rod and the connecting frame, and the rotation axis between the rear support rod and the rear wheel seat are parallel to each other and all extend downward from the outside to the inside in the left-right direction.

3. The stroller according to claim 1, characterized in that: As the slider slides forward along the connecting frame, it causes the upper support assembly to fold and the front support to flip backward and retract relative to the connecting frame.

4. The stroller according to claim 1, characterized in that: The upper support assembly includes at least a connecting seat, a side rod frame, and a support frame. The front support is rotatably connected to the front of the connecting frame about a first axis. The connecting seat is rotatably connected to the upper part of the front support about a second axis. The first axis and the second axis are parallel to each other and both extend in the left-right direction. The second axis is located above the first axis. The side rod frame includes two side rods respectively disposed on the left and right sides and both extending in the up-down direction. The support frame includes two support rods respectively disposed on the left and right sides and both extending in the up-down direction. On each side of the stroller, the lower part of the side rod is rotatably connected to the connecting seat about a third axis. The upper part of the side rod is rotatably connected to the upper part of the support rod about a fourth axis. The lower part of the support rod is rotatably connected to the sliding member about a fifth axis. The third axis, the fourth axis, and the fifth axis are parallel to each other and all extend gradually upward from the outside to the inside in the left-right direction.

5. The stroller according to claim 4, characterized in that: The upper support assembly also includes a push rod frame and a push handle frame. The push rod frame includes two push rods located on the left and right sides and extending vertically. The push handle frame includes two push handle rods located on the left and right sides. The push handle rods extend inward from bottom to top. One end of the push handle rods on both sides is rotatably connected around a sixth axis. On each side of the stroller, the upper part of the push rod is rotatably connected to the other end of the push handle rod around a seventh axis. The sixth axis and the seventh axis are parallel to each other and perpendicular to the length extension direction of the push rod. The lower part of the push rod is rotatably connected to the upper part of the side rod around an eighth axis. The eighth axis is parallel to the first axis.

6. The stroller according to claim 5, characterized in that: When the stroller is in a folded state, the push rod frame, the side rod frame, the support rod frame, and the connecting frame are stacked sequentially in the vertical direction. The push handle frame is folded between the push rods on both sides and stacked on top of the side rod frame at the same height as the push rod frame.

7. The stroller according to claim 5, characterized in that: When the stroller is in the unfolded state, the front support, the connecting seat, the side rod frame, the push rod frame, and the push handle frame extend upwards from front to back along the same length direction.

8. The stroller according to claim 4, characterized in that: When the stroller is in the unfolded state, the support rod gradually tilts and extends backward from bottom to top, and the rear of the connecting frame is also provided with a handle for gripping.

9. The stroller according to any one of claims 1 to 8, characterized in that: When the stroller is folded, the front support and the rear wheel assemblies on both sides are supported on the ground.

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