CN116176679A - Child cart - Google Patents

Abstract

The invention discloses a child stroller, which comprises a first side bracket, a second side bracket and a transverse bracket, wherein the first side bracket and the second side bracket are respectively arranged at the left side and the right side; the third end part is rotationally connected with the first side bracket, and the fourth end part is rotationally connected with the second side bracket; the first connecting rod is rotationally connected with the second connecting rod. The child stroller provided by the invention can realize transverse folding of the brackets at the two sides in the left-right direction, simultaneously remarkably enhance the rigidity and stability of the child stroller when being unfolded, and reduce jolt and shake of the child stroller when being pushed for use.

Description

stroller

technical field

The invention relates to the field of children's products, in particular to a baby stroller.

Background technique

Children's strollers on the market can usually be folded. After folding, the height of the frame is lowered, the front and rear are folded, and the overall volume is reduced, which is convenient for storage and transportation. In order to further reduce the folding volume of the stroller, some frames are designed to be able to be folded in the left and right directions, wherein the transverse connecting rods between the brackets on both sides are broken into multiple short rods, and the multiple short rods can be folded during the folding process. Turn and fold, so that the left and right side brackets are close to each other, and the frame has a smaller width after folding. For the above-mentioned children's stroller that can be folded left and right, there is often the problem of unstable frame structure. In the process of pushing and using the stroller, the frame is subjected to the gravity load of the child, and there is no complete rigid link between the left and right brackets, which is prone to obvious shaking and bumping, and the riding experience of the child is poor. Reduce the service life of the stroller.

Contents of the invention

The object of the present invention is to provide a child stroller with stronger structural rigidity to solve the problems existing in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A children's stroller, comprising a first side bracket and a second side bracket respectively arranged on the left and right sides, and a cross bracket connected between the first side bracket and the second side bracket, the cross bracket includes A first connecting rod and a second connecting rod, the first connecting rod has a first end and a second end which are respectively arranged at two different ends in its own length direction, and the second connecting rod has a first end and a second end which are respectively arranged in its own length direction The third end and the fourth end of the different two ends, the first end is rotatably connected to the first side bracket, and the second end is rotatably connected to the second side bracket; The third end is rotatably connected to the first side bracket, the fourth end is rotatably connected to the second side bracket; the first connecting rod is rotatably connected to the second connecting rod.

In some embodiments, the stroller has a folded state and an unfolded state. When the stroller is in the unfolded state, the cross bracket extends along the left and right directions, and the first side bracket and the second side bracket The brackets are arranged at intervals along the left and right directions; when the stroller is in a folded state, the horizontal brackets are folded along the left and right directions, and the first side bracket and the second side bracket are moved closer to each other along the left and right directions.

In some embodiments, when the stroller is transformed from the unfolded state to the folded state, the first end and the fourth end approach each other, and the second end and the third end The ends are close to each other, the first end and the third end are far away from each other, and the second end and the fourth end are far away from each other.

In some embodiments, the first end is spaced from the third end, and the second end is spaced from the fourth end.

In some embodiments, the stroller has a folded state and an unfolded state, and when the stroller is in the unfolded state, the first end is located above the third end, and the fourth end and/or, the first end is located behind the third end, and the fourth end is located behind the second end.

In some embodiments, the first side bracket and the second side bracket are arranged symmetrically with respect to a first virtual plane, and the first virtual plane extends along the front-to-back direction; the first end and the fourth end part is arranged symmetrically with respect to the first imaginary plane, the second end and the third end are arranged symmetrically about the first imaginary plane, and the rotation connection between the first connecting rod and the second connecting rod intersection with the first imaginary plane, the first end and the second end are arranged symmetrically with respect to the rotational connection, and the third end and the fourth end are symmetrically arranged with respect to the rotational connection set symmetrically.

In some embodiments, the first end is rotatably connected with the first side bracket around a first axis, and the second end is rotatably connected with the second side bracket around a second axis, The third end is rotatably connected with the first side bracket around the third axis, the fourth end is rotatably connected with the second side bracket around the fourth axis, and the first connecting rod Rotately connected with the second connecting rod around the fifth axis, the first axis, the second axis, the third axis, the fourth axis, the The fifth axis lines are parallel to each other.

In some embodiments, there is a second virtual plane, the first end, the second end, the third end and the fourth end all intersect the second virtual plane, so The first axis, the second axis, the third axis, the fourth axis, and the fifth axis are respectively perpendicular to the second virtual plane.

In some embodiments, the first side bracket and the second side bracket are arranged symmetrically along the left-right direction, the first side bracket includes a first rod and a second rod, and the second side bracket includes a symmetrical Another set of first rods and second rods is provided, the first end is rotatably connected to the first rod of the first side bracket, and the second end is connected to the second side bracket The second rod is rotatably connected; the third end is rotatably connected to the second rod of the first side support, and the fourth end is rotatably connected to the first rod of the second side support.

In some embodiments, the stroller has a folded state and an unfolded state, and when the stroller is in the unfolded state, each of the first side frame and the second side frame includes: The front bracket, the bottom of the front bracket is provided with the front wheel assembly; the rear bracket, the bottom of the rear bracket is provided with the rear wheel assembly; the first strut, the lower part of the first strut, the upper part of the rear bracket 2. Two of the three upper parts of the front bracket are rotatably connected, and the third is rotatably connected to at least one of the first two; a push rod, and the push rod is rotatably connected to the first support rod; the second a strut, the upper part of the second strut is rotatably connected to the push rod, and the lower part of the second strut is rotatably connected to the rear bracket; the front link is connected to one end of the front link The front bracket is rotatably connected, and the other end of the front link is rotatably connected to the second strut; wherein, the second strut is the first rod, and the rear bracket is the second rod pieces.

Due to the application of the above-mentioned technical solution, in the children's stroller provided by the present invention, the rigid first connecting rod and the second connecting rod are respectively rotatably connected to the first side bracket and the second side bracket through a plurality of turning points, and can be flexibly rotated and folded , to realize the horizontal folding of the two side brackets in the left and right directions. The horizontal bracket will not affect the folding of the two side brackets themselves, and can be folded together with the frame as a whole, which greatly reduces the folding volume of the stroller and can significantly The rigidity and stability of the stroller when unfolded are enhanced, the bumping and shaking when the stroller is pushed and used is reduced, a more comfortable riding experience is provided for the child, and the service life of the stroller is further extended.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following will give a brief introduction to the drawings that need to be used in the description of the embodiments.

Accompanying drawing 1 is the three-dimensional schematic view of the unfolded state of the children's stroller in a specific embodiment of the present invention;

Accompanying drawing 2 is a schematic side view of the expanded state of the children's stroller in this embodiment;

Accompanying drawing 3 is the schematic front view of the expanded state of the children's stroller in this embodiment;

Accompanying drawing 4 is the three-dimensional schematic diagram during the folding process of the stroller in this embodiment;

Accompanying drawing 5 is the schematic diagram of the front view during the folding process of the children's stroller in this embodiment;

Accompanying drawing 6 is the three-dimensional schematic view of the folded state of the children's stroller in this embodiment;

Accompanying drawing 7 is the schematic front view of the folded state of the children's stroller in this embodiment;

Among them: 100, the first side bracket; 200, the second side bracket; 300, the horizontal bracket; 310, the first connecting rod; 311, the first end; 312, the second end; 320, the second connecting rod; 321 , the third end; 322, the fourth end; 330, the first front bar; 340, the second front bar; 350, the first rear bar; 360, the second rear bar; 370, the grip link; 1, the front Bracket; 11. Front wheel assembly; 2. Rear bracket; 21. Rear wheel assembly; 22. Upper extension; 23. Second connecting portion; 3. First strut; 4. Push rod; 41. Lower section of push rod; 5. Second strut; 51. Front extension; 52. First connection; 6. Front connecting rod; 7. Seat post; 71. Lower extension; 8. Sliding sleeve; 1001. First axis; 1002, the second axis; 1003, the third axis; 1004, the fourth axis; 1005, the fifth axis; 101, the first virtual plane.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", The orientation or positional relationship indicated by "left-right direction", "height direction", "front-rear direction" etc. is based on attached drawing 1. When the child normally rides on the stroller, the orientation or positional relationship observed by the child is only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the referred device or element must have a specific orientation, only have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

Referring to Fig. 1 to Fig. 3, the present embodiment provides a baby stroller with a folded state and an unfolded state, including a first side frame 100 and a second side frame 200 respectively arranged on the left and right sides, and connected to the first side frame. The cross bracket 300 between the side bracket 100 and the second side bracket 200 . Referring to Fig. 1 and Fig. 6, when the stroller is in the unfolded state, the cross bracket 300 extends along the left and right directions, and the first side bracket 100 and the second side bracket 200 are arranged at intervals along the left and right directions and are relatively far away; In the folded state, the cross support 300 is folded in the left and right directions, and the first side support 100 and the second side support 200 are moved closer to each other in the left and right directions, so that the folded width of the stroller is smaller.

Referring to Fig. 1 to Fig. 3, in this embodiment, the first side bracket 100 and the second side bracket 200 are arranged symmetrically along the left-right direction, specifically about the first virtual plane 101, which is arranged symmetrically along the front-back direction extend. Each of the first side frame 100 and the second side frame 200 includes a front frame 1 , a rear frame 2 , a first strut 3 , a push rod 4 , a second strut 5 , a front link 6 and the like. Wherein, when the stroller is in the unfolded state, the front support 1 gradually extends upwards from front to rear, and the rear support 2 gradually extends downwards from front to rear. The bottom of the front support 1 is provided with a front wheel assembly 11, and the The bottom is provided with a rear wheel assembly 21 . The first strut 3 extends obliquely upward gradually from the front to the rear, and two of the bottom of the first strut 3, the top of the rear bracket 2, and the top of the front bracket 1 are rotationally connected, and the third is connected to the first two. At least one of them is rotationally connected. In this embodiment, the upper end of the rear bracket 2 has an upward extension 22 extending backward and upward. 22 turn to connect. The push rod 4 extends obliquely upward gradually from front to back, where the extension direction of the push rod 4 is roughly parallel or collinear with the extension direction of the first strut 3, and the push rod 4 is rotationally connected with the first strut 3, specifically the push rod The lower part of 4 is rotatably connected with the upper end of the first strut 3 . In this embodiment, the lower part of the push rod 4 has a lower section 41 of the push rod, and the lower section 41 of the push rod is located below the rotational connection between the push rod 4 and the first strut 3 . The second strut 5 extends vertically as a whole, the upper part of the second strut 5 is rotatably connected with the push rod 4 , and the lower part of the second strut 5 is rotatably connected with the rear bracket 2 . In this embodiment, specifically, the upper end of the second strut 5 is rotatably connected to the lower end of the lower section 41 of the push rod, and the lower portion of the second strut 5 also has a forward extension 51 extending forward. The front link 6 extends along the front-rear direction, one end of the front link 6 is rotatably connected to the front bracket 1 , and the other end of the front link 6 is rotatably connected to the second strut 5 . In this embodiment, the front connecting rod 6 extends in an arc from front to rear. The front end of the front connecting rod 6 is rotatably connected to the front bracket 1 , and the rear end of the front connecting rod 6 is rotatably connected to the front end of the forward extension 51 .

Referring to FIG. 1 to FIG. 3 , the first side bracket 100 and the second side bracket 200 in this embodiment further include a seatpost 7 and a sliding sleeve 8 respectively. When the stroller is in the unfolded state, the seatpost 7 extends in the front-rear direction as a whole, and the rear end of the seatpost 7 has a downward extension 71, and the lower end of the downward extension 71 is connected to the second strut on the same side. 5 Turn to connect. The sliding sleeve 8 is rotatably connected with the first strut 3 , and the seatpost 7 is connected with the sliding sleeve 8 so as to be able to slide relatively along its axial direction.

It should be noted that, in each of the first side bracket 100 and the second side bracket 200, the rotation axes between any two components that are rotatably connected to each other extend along the left and right directions of the stroller, so as to realize The linkage folding of the entire first side frame 100 or the entire second side frame 200 .

1 to 3, the cross bracket 300 at least includes a first connecting rod 310 and a second connecting rod 320, the first connecting rod 310 has a first end 311 and a second The second end portion 312 and the second connecting rod 320 have a third end portion 321 and a fourth end portion 322 respectively disposed on two different end portions in the length direction of the second connecting rod 320 . Wherein, the first end 311 is rotatably connected to the first side bracket 100, the second end 312 is rotatably connected to the second side bracket 200; the third end 321 is rotatably connected to the first side bracket 100, and the fourth end 322 is rotatably connected to the first side bracket 100. The second side bracket 200 is rotatably connected. also. The first link 310 is rotatably connected to the second link 320 , and along the left-right direction, the rotatable connection between the first link 310 and the second link 320 is located between the first side bracket 100 and the second side bracket 200 . In this embodiment, the first end 311 is connected to the first side bracket 100 in rotation around the first axis 1001, the second end 312 is connected to the second side bracket 200 in rotation around the second axis 1002, and the third end part 321 is rotatably connected with the first side bracket 100 around the third axis 1003, the fourth end 322 is rotatably connected with the second side bracket 200 around the fourth axis 1004, and the first connecting rod 310 is connected with the second connecting rod 320. Rotatingly connected around the fifth axis 1005, the first axis 1001, the second axis 1002, the third axis 1003, the fourth axis 1004, and the fifth axis 1005 are parallel to each other.

In this embodiment, on one side of the first side bracket 100, the first end 311 and the third end 321 are spaced apart; on the side of the second side bracket 200, the second end 312 and the fourth end 322 interval setting. When the stroller is in the expanded state, the first end 311 is located above the third end 321, and the fourth end 322 is located above the second end 312; and/or, the first end 311 is located at the third end The rear portion 321 , the fourth end portion 322 is located behind the second end portion 312 . In this embodiment, specifically, the first end portion 311 is located at the upper rear of the third end portion 321 , and the fourth end portion 322 is located at the upper rear of the second end portion 312 . In this embodiment, when the stroller is in the unfolded state, the side where the first side bracket 100 is located is the right side, and the side where the second side bracket 200 is located is the left side, and the first connecting rod 310 runs from front to back. The second connecting rod 320 gradually extends obliquely to the upper left, and the second connecting rod 320 gradually extends obliquely to the upper right from the front to the rear. It can be seen from the accompanying drawings that the first connecting rod 310 and the second connecting rod 320 in this embodiment do not extend strictly along a straight line, and both have multiple bends in their respective axial directions, so that the first connecting rod 310 can be avoided. It interferes with the second connecting rod 320 in the process of turning and retracting. Along the left-right direction, the first connecting rod 310 gradually bends inward at the first end 311 and the second end 312 , and the second connecting rod 320 gradually bends inward at the third end 321 and the fourth end 322 , Therefore, both the first link 310 and the second link 320 can fit the first side frame 100 and the second side frame 200 better, so that the folded stroller has a smaller width. In this embodiment, there is a second virtual plane (not shown in the figure), and the first end portion 311, the second end portion 312, the third end portion 321 and the fourth end portion 322 all intersect with the second virtual plane, The first axis line 1001 , the second axis line 1002 , the third axis line 1003 , the fourth axis line 1004 and the fifth axis line 1005 are respectively perpendicular to the second virtual plane. In this embodiment, when the stroller is in the unfolded state, the second virtual plane gradually extends upward from front to rear, so the first axis line 1001 and the like gradually extend downward from front to rear.

Referring to FIG. 3 , in this embodiment, the first end portion 311 and the fourth end portion 322 are arranged symmetrically with respect to the first imaginary plane 101 , and the second end portion 312 and the third end portion 321 are arranged symmetrically with respect to the first imaginary plane 101 . The rotational connection of the first connecting rod 310 and the second connecting rod 320 intersects the first virtual plane 101, the first end 311 and the second end 312 are arranged symmetrically with respect to the rotational connection, the third end 321 and the fourth The end portion 322 is arranged symmetrically with respect to the rotational connection, in other words, the first connecting rod 310 is rotationally connected with the second connecting rod 320 at the midpoint position. This makes the cross bracket 300 more symmetrical in the front, rear, left and right directions, and the force is more uniform and stable.

1 to 3, the first side bracket 100 includes a first rod and a second rod, and the second side bracket 200 includes another set of first rods and second rods arranged symmetrically. Part 311 is rotatably connected with the first rod of the first side bracket 100, and the second end 312 is rotatably connected with the second rod of the second side bracket 200; the third end 321 is connected with the second rod of the first side bracket 100 The member is rotatably connected, and the fourth end portion 322 is rotatably connected to the first rod member of the second side bracket 200 . In this embodiment, the second strut 5 is specifically selected as the first rod, the rear bracket 2 is the second rod, and the upper part of the second strut 5 on each side is rotationally connected with the first connecting rod 310 or the second connecting rod 320 , the upper end of the rear bracket 2 on each side is rotationally connected with the first link 310 or the second link 320 . In other embodiments, the first rod and the second rod can also be selected from other different rods, which can achieve the effect of enhancing the rigidity of the frame without interfering with the overall folding of the stroller. Further, in some embodiments, structures of the first side bracket 100 and the second side bracket 200 that are completely different from those in this embodiment may also be adopted. The first rod and the second rod of the connecting rod 310 and the second connecting rod 320 . Referring to Figures 1 to 3, in this embodiment, along the left and right directions, the upper part of the second strut 5 on each side has a first connecting portion 52 protruding inward, and the upper end of the rear bracket 2 on each side Each part has an inwardly protruding second connecting part 23 for rotational connection with one end corresponding to the first connecting rod 310 or the second connecting rod 320 .

1 and 3, in this embodiment, the cross bracket 300 also includes a first front rod 330 and a second front rod 340 arranged between the front brackets 1 on both sides, and a front rod 340 arranged between the rear brackets 2 on both sides. Between the first rear rod 350 and the second rear rod 360 . Wherein, one end of the first front rod 330 is rotatably connected with the front bracket 1 of the first side bracket 100, and one end of the second front rod 340 is rotatably connected with the front bracket 1 of the second side bracket 200. The other end is rotatably connected with the other end of the second front rod 340 . One end of the first rear rod 350 is rotatably connected with the rear bracket 2 of the first side bracket 100, one end of the second rear rod 360 is rotatably connected with the rear bracket 2 of the second side bracket 200, and the other end of the first rear rod 350 is The part is rotatably connected with the other end of the second rear rod 360 . In this way, the first front rod 330 and the second front rod 340 can realize the unfolding and folding of the front brackets 1 on both sides through relative rotation, and the first rear rod 350 and the second rear rod 360 can realize the expansion and folding of the rear brackets 2 on both sides through relative rotation. unfolding and collapsing.

Referring to FIG. 1 and FIG. 3 , in this embodiment, the cross bracket 300 further includes a grip link 370 disposed between the push rods 4 on both sides. When the stroller is in the unfolded state, the grip link 370 extends in the left-right direction. Along the left-right direction, the upper part of the push rod 4 on each side gradually bends inward from bottom to top, and the upper end of the push rod 4 on each side is in contact with the grip One end of the same side of the connecting rod 370 is rotationally connected, and the center line of rotation of the two extends along the vertical direction, specifically parallel to the axial direction of the main body of the push rod 4, so that the left and right retraction of the push rod 4 on both sides and the grip connecting rod 370 can be realized. fold.

Referring to Fig. 4 and Fig. 5, in this embodiment, when the stroller is transformed from the unfolded state to the folded state, the first side frame 100 and the second side frame 200 are folded separately and synchronously, while the transverse frame 300 are folded toward each other along the left-right direction, so that the first side frame 100 and the second side frame 200 are close to each other along the left-right direction. Wherein, the first connecting rod 310 and the second connecting rod 320 rotate relatively around the fifth axis 1005, the first end 311 and the fourth end 322 are close to each other, and the second end 312 and the third end 321 are close to each other , while the first end portion 311 and the third end portion 321 are far away from each other, and the second end portion 312 and the fourth end portion 322 are far away from each other. At the same time, the rotational connection between the first front bar 330 and the second front bar 340 moves upwards, so that the two rotate and gather; the rotational joint between the first rear bar 350 and the second rear bar 360 moves upwards, so that the two rotate Folding in; the push rods 4 on both sides rotate backwards respectively with respect to the holding link 370, and are folded together on the rear side of the holding link 370.

Referring to Fig. 4 and Fig. 5, when the stroller is transformed from the unfolded state to the folded state, in each of the first side frame 100 and the second side frame 200, the push rod 4 is first driven to move downward. , the push rod 4 rotates forward relative to the first strut 3 and draws in, driving the first strut 3 and the second strut 5 to turn backwards and draw toward the rear bracket 2 . During this process, the movement of the second strut 5 is transmitted to the front connecting rod 6 through the front extension part 51 , and then the front bracket 1 and the rear bracket 2 are pulled together through the front connecting rod 6 . At the same time, since the upper parts of the first strut 3 and the second strut 5 are relatively far away, while driving the seat post 7 to rotate, the sliding sleeve 8 slides upward along the seat post 7, and the sliding sleeve 8 and the downward extension of the seat post 7 71 gradually move away, so that the seat post 7 can also be folded between the first strut 3 and the second strut 5 .

The above-mentioned folding process of the first side bracket 100 and the second side bracket 200 reacts on the first link 310 and the second link 320: since the second strut 5 turns backward relative to the rear bracket 2, the first link The first end 311 of 310 and the fourth end 322 of the second link 320 both move backward and downward, while the third end 321 and the second end 312 move upward relatively, and the first end 311 and the fourth end The portion 322 moves synchronously to the bottom of the third end portion 321 and the second end portion 312 .

Referring to Fig. 6 and Fig. 7, in this embodiment, when the stroller is in the folded state, the first link 310 and the second link 320 respectively extend in the up and down direction, and the front support 1 and the rear support on each side 2. The first strut 3, the push rod 4, the second strut 5, the front connecting rod 6, the seat post 7, etc. also extend along the up and down directions respectively, and are gathered together compactly. Gradually slanting downwards, the overall length, height, and width of the stroller are significantly reduced, and the front wheel assembly 11 and the rear wheel assembly 21 on both sides can be supported on the ground at the same time, realizing folding and self-standing.

To sum up, the children’s stroller provided by this embodiment has no interference between the rods, can conveniently and quickly realize horizontal folding, obtain a very small folding volume, and can have a high The structural rigidity and strength reduce the shaking and bumping of the frame and provide a better user experience.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a children's shallow, includes first side support and the second side support of locating left and right sides respectively, and connect in first side support with cross arm between the second side support, its characterized in that: the transverse support comprises a first connecting rod and a second connecting rod, the first connecting rod is provided with a first end part and a second end part which are respectively arranged at two different end parts in the length direction of the transverse support, the second connecting rod is provided with a third end part and a fourth end part which are respectively arranged at two different end parts in the length direction of the transverse support, the first end part is rotationally connected with the first side support, and the second end part is rotationally connected with the second side support; the third end part is rotationally connected with the first side bracket, and the fourth end part is rotationally connected with the second side bracket; the first connecting rod is rotationally connected with the second connecting rod.

2. The stroller of claim 1, wherein: the child trolley is provided with a folding state and an unfolding state, when the child trolley is in the unfolding state, the transverse brackets extend along the left-right direction, and the first side brackets and the second side brackets are arranged at intervals along the left-right direction; when the child stroller is in a folded state, the transverse brackets are folded in the left-right direction, and the first side brackets and the second side brackets are mutually folded in the left-right direction.

3. The stroller of claim 2, wherein: when the child stroller is converted from the unfolded state to the folded state, the first end portion and the fourth end portion are close to each other, the second end portion and the third end portion are close to each other, the first end portion and the third end portion are far away from each other, and the second end portion and the fourth end portion are far away from each other.

4. The stroller of claim 1, wherein: the first end portion and the third end portion are arranged at intervals, and the second end portion and the fourth end portion are arranged at intervals.

5. The stroller of claim 4, wherein: the child stroller has a folded state and an unfolded state, and when the child stroller is in the unfolded state, the first end is positioned above the third end, and the fourth end is positioned above the second end; and/or the first end is located behind the third end and the fourth end is located behind the second end.

6. The stroller of claim 1, wherein: the first side bracket and the second side bracket are symmetrically arranged about a first virtual plane, and the first virtual plane extends along the front-back direction; the first end and the fourth end are symmetrically arranged about the first virtual plane, the second end and the third end are symmetrically arranged about the first virtual plane, the rotation connection of the first connecting rod and the second connecting rod is intersected with the first virtual plane, the first end and the second end are symmetrically arranged about the rotation connection, and the third end and the fourth end are symmetrically arranged about the rotation connection.

7. The stroller of claim 1, wherein: the first end part is rotationally connected with the first side support around a first axial lead, the second end part is rotationally connected with the second side support around a second axial lead, the third end part is rotationally connected with the first side support around a third axial lead, the fourth end part is rotationally connected with the second side support around a fourth axial lead, the first connecting rod is rotationally connected with the second connecting rod around a fifth axial lead, and the first axial lead, the second axial lead, the third axial lead, the fourth axial lead and the fifth axial lead are mutually parallel.

8. The stroller of claim 7, wherein: there is a second virtual plane, the first end, the second end, the third end, and the fourth end all intersect the second virtual plane, and the first axis, the second axis, the third axis, the fourth axis, and the fifth axis are each perpendicular to the second virtual plane.

9. A stroller according to any one of claims 1 to 8, wherein: the first side support and the second side support are symmetrically arranged along the left-right direction, the first side support comprises a first rod piece and a second rod piece, the second side support comprises another group of first rod piece and second rod piece which are symmetrically arranged, the first end part is rotationally connected with the first rod piece of the first side support, and the second end part is rotationally connected with the second rod piece of the second side support; the third end part is rotationally connected with the second rod piece of the first side bracket, and the fourth end part is rotationally connected with the first rod piece of the second side bracket.

10. The stroller of claim 9, wherein: the stroller has a collapsed state and an expanded state, and when the stroller is in the expanded state, each of the first side bracket and the second side bracket comprises:

the front support, the bottom of the said front support has front wheel assemblies;

the bottom of the rear bracket is provided with a rear wheel assembly;

the lower part of the first stay bar, the upper part of the rear bracket and the upper part of the front bracket are rotationally connected, and the third party is rotationally connected with at least one of the first stay bar, the rear bracket and the front bracket;

the push rod is rotationally connected with the first support rod;

the upper part of the second stay bar is rotationally connected with the push rod, and the lower part of the second stay bar is rotationally connected with the rear bracket;

the front connecting rod is rotatably connected with the front bracket at one end part, and the second supporting rod is rotatably connected with the other end part of the front connecting rod;

the second supporting rod is the first rod piece, and the rear support is the second rod piece.

Images