Stroller

Abstract

The invention discloses a stroller convenient to fold. The stroller comprises a frame, the frame comprises a side support, the side support comprises a front rod, a rear support connecting rod and a backrest rod, the front rod is connected to the rear support connecting rod through a connecting piece, the connecting piece is connected to the rear end of the front rod, the connecting piece is rotatably connected to the rear support connecting rod, and the backrest rod is connected to the rear end of the rear support connecting rod. The backrest rod is rotatably connected to the connecting piece; a slot is formed in the connecting piece, is positioned between the connecting piece and the rear end of the rear bracket connecting rod and is formed by splicing the connecting piece and the rear end of the rear bracket connecting rod; when the frame is in an unfolded state, the lower end part of the backrest rod is inserted into the slot; when the frame is in a folded state, the rear support connecting rod and the front rod rotate downwards relative to the connecting piece, the blocking effect of the rear support connecting rod and the front rod on the backrest rod disappears, and the backrest rod turns towards the direction close to the front rod.

Description

[0001] This application is a divisional application of the invention with application number 201810425761X filed on May 7, 2018. Technical Field

[0002] The invention relates to the field of children's products, and in particular to a children's stroller. Background Art

[0003] In the prior art, in order to facilitate transportation or storage, strollers are usually designed to be foldable. A foldable stroller generally includes a side stand with an unfolded position and a folded position, a front wheel assembly arranged at the front bottom of the side stand, a rear wheel assembly arranged at the rear bottom of the side stand, and a seat pocket arranged on the side stand. There are many types of side stands of existing strollers, and the number of rods of the side stands is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are different. The goal pursued by stroller designers is to avoid the folded body being large and heavy and inconvenient to carry, and to make the frame easy to fold and small in size after folding. Summary of the invention

[0004] The invention provides an improved baby stroller which is convenient to fold.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] The stroller according to claim 1, wherein the front wheel assembly and the rear wheel assembly are arranged at the bottom of the stroller frame, the side frame comprising a front rod, a rear rod connecting rod and a backrest rod, the front rod being connected to the rear rod connecting rod by a connecting piece, the connecting piece being connected to the rear end of the front rod, the connecting piece being rotatably connected to the rear rod connecting rod, and the backrest rod being rotatably connected to the connecting piece; a slot is provided on the connecting piece, the slot is located between the rear ends of the connecting piece and the rear rod connecting rod and is formed by splicing the two; when the frame is in the unfolded state, the lower end of the backrest rod is inserted into the slot; when the frame is in the folded state, the rear rod connecting rod and the front rod are rotated downward relative to the connecting piece, the blocking effect of the rear rod connecting rod and the front rod on the backrest rod disappears, and the backrest rod flips in a direction close to the front rod.

[0007] In a preferred embodiment, the frame includes two or more side brackets and a foldable cross bracket connected between the side brackets; each of the side brackets includes:

[0008] Push handle;

[0009] A front bracket connecting rod, the upper end of which is rotatably connected to the push handle via a first pivot;

[0010] A front bracket, the lower end of which is provided with the front wheel assembly;

[0011] A push handle connecting rod, the upper end of which is rotatably connected to the lower end of the push handle via a second pivot;

[0012] A rear support, the lower end of which is provided with the rear wheel assembly;

[0013] a rear support link, the rear end of which is rotatably connected to the lower end of the rear support via a third pivot; and

[0014] a front rod rotatably connected to the front bracket via a fourth pivot and having a rear end rotatably connected to the rear bracket link via a fifth pivot;

[0015] Among them, the lower end of the front bracket connecting rod, the upper end of the front bracket and the upper end of the rear bracket are connected to each other for relative rotation or coaxial rotation; the push handle connecting rod is rotatably connected to the rear bracket through a sixth pivot, and the lower end of the push handle connecting rod is slidably and rotatably connected to the rear bracket connecting rod; when the frame is in the unfolded state, the lower end of the push handle connecting rod is connected to the first position of the rear bracket connecting rod; when the frame is in the folded state, the upper end of the push handle is close to the upper end of the front bracket and the upper end of the rear bracket, the lower end of the push handle is close to the lower end of the rear bracket and the lower end of the front bracket, and the lower end of the push handle connecting rod is connected to the second position of the rear bracket connecting rod, and the second position is located in front of the first position.

[0016] In one embodiment, each of the side brackets further comprises a first sliding member slidably disposed on the rear bracket connecting rod, and the lower end portion of the push handle connecting rod is rotatably connected to the first sliding member via a seventh pivot.

[0017] In one embodiment, the first sliding member is a first sliding sleeve slidably mounted on the rear support link.

[0018] In one embodiment, each of the side brackets further includes a backrest rod, the front rod is connected to the rear bracket link via a connecting piece, the connecting piece is fixedly connected to the rear end of the front rod, the connecting piece is rotatably connected to the rear bracket link via the fifth pivot, and the backrest rod is rotatably connected to the connecting piece via an eighth pivot. When the frame is in the unfolded state, the connecting piece is provided with a slot, the slot is located between the connecting piece and the end of the rear bracket link, and the lower end of the backrest rod is inserted into the slot; when the frame is in the folded state, the lower end of the backrest rod is disengaged from the slot, and the backrest rod and the front rod are brought close to each other.

[0019] In one embodiment, the backrest rod includes an outer rod, an inner rod slidably connected to the lower part of the outer rod, and a spring arranged between the outer rod and the inner rod. The outer rod is rotatably connected to the connecting member through an eighth pivot. During the relative expansion of the front rod and the rear support link, the spring is compressed and provides a driving force for the inner rod to be inserted into the slot; when the frame is in the expanded state, the lower end of the inner rod is inserted into the slot.

[0020] In one embodiment, each of the side supports further includes a rear rod located behind the front rod, and seats are respectively provided on the front rod and the rear rod.

[0021] In one embodiment, the rear rod is slidably and rotatably connected to the push handle connecting rod, and the front end of the rear rod is rotatably connected to the rear bracket via a ninth pivot. When the frame is in a folded state, the rear rod, the push handle connecting rod and the rear bracket are close to each other.

[0022] In one embodiment, each of the side brackets further comprises a second sliding member slidably disposed on the rear rod, and the push handle connecting rod is rotatably connected to the second sliding member via a tenth pivot.

[0023] In one embodiment, the cross support includes one or more cross support assemblies, and the cross support assembly includes two connecting rods that are rotatably connected by a pivot to cross and form a cross structure, and the upper and lower ends of the connecting rods are rotatably connected to the two parts of the side support respectively.

[0024] In one embodiment, a cross brace assembly is provided between the front brackets of the two side brackets; and / or, a cross brace assembly is provided between the rear brackets of the two side brackets; and / or, a cross brace assembly is provided between the push handle connecting rods of the two side brackets.

[0025] In combination with the above, the present invention adopts the above technical solution, which has the following advantages compared with the prior art:

[0026] The structure of the side bracket of the child stroller provided by the present invention ensures that the structure of the child stroller is stable when in an unfolded state, and the frame size is small after being folded. The rods of the side bracket can be folded close to each other by pushing the push handle, and the folding is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 is a three-dimensional schematic diagram of a child stroller according to the present invention after being unfolded;

[0029] Figure 2 for Figure 1 The stroller is shown in a side view when folded;

[0030] Figure 3 for Figure 2 A side view of the stroller shown when further folded;

[0031] Figure 4 for Figure 1 The stroller is shown in a side view when folded;

[0032] Figure 5 is a three-dimensional schematic diagram of a backrest rod after being unfolded according to the present invention;

[0033] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0034] Figure 7 for Figure 5 A cross-sectional view of the middle backrest rod;

[0035] Figure 8 for Figure 5 A perspective view of the backrest rod when folded;

[0036] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle;

[0037] Fig.10 for Figure 5 Side view with backrest bars shown folded.

[0038] Among them, 100, side bracket; 200, cross bracket; 300, front wheel assembly; 400, rear wheel assembly;

[0039] 10. push handle; 20. front bracket connecting rod; 30. front bracket; 40. push handle connecting rod; 50. rear bracket; 501. joint; 60. rear bracket connecting rod; 601. first sliding sleeve; 70. front rod; 701. connecting piece; 702. slot; 80. rear rod; 801. second sliding sleeve; 90. backrest rod; 901. outer rod; 9010. connecting pin; 902. inner rod; 9020. long hole; 903. spring;

[0040] 21. first cross brace assembly; 210. first connecting rod; 22. second cross brace assembly; 220. second connecting rod; 23. third cross brace assembly; 230. third connecting rod; 231. fourth connecting rod; 24. fourth cross brace assembly; 240. fifth connecting rod; 241. sixth connecting rod. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are 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. The directional terms mentioned in the present invention are defined based on the conventional viewing angle of the child stroller in the unfolded state in the art and for the convenience of description.

[0042] Figure 1-10 A child stroller according to the present invention is shown, comprising a frame having an unfolded state and a folded state, a front wheel assembly 300 and a rear wheel assembly 400 arranged at the bottom of the frame. The frame comprises two or more side brackets 100 and a foldable cross bracket 200 connected between the side brackets 100. In this embodiment, there are two side brackets 100, which are respectively located on the left and right sides of the child stroller.

[0043] Reference Figure 1-4As shown, each side bracket 100 includes: a push handle 10, a front bracket connecting rod 20, a front bracket 30, a push handle connecting rod 40, a rear bracket 50, a rear bracket connecting rod 60 and a front rod 70. The front wheel assembly 300 is arranged at the lower end of the front bracket 30, and the rear wheel assembly 400 is arranged at the lower end of the rear bracket 50. The upper end of the front bracket connecting rod 20 is rotatably connected to the push handle 10 through a first pivot a1, and the upper end of the push handle connecting rod 40 is rotatably connected to the lower end of the push handle 10 through a second pivot a2, and the first pivot a1 is located above the second pivot a2. The rear end of the rear bracket connecting rod 60 is rotatably connected to the lower end of the rear bracket 50 through a third pivot a3. The front rod 70 is rotatably connected to the front bracket 30 through a fourth pivot a4, and the rear end of the front rod 70 is rotatably connected to the front end of the rear bracket connecting rod 60 through a fifth pivot a5. The lower end of the front bracket connecting rod 20, the upper end of the front bracket 30 and the upper end of the rear bracket 50 are connected to each other for relative rotation or coaxial rotation, that is, the lower end of the front bracket connecting rod 20, the upper end of the front bracket 30 and the upper end of the rear bracket 50 are connected to each other for rotation via the same pivot, or the first and second components of the three components are connected to each other for rotation via a pivot and the third component is connected to the first or second component for rotation via another pivot; specifically in this embodiment, the upper end of the rear bracket 50 has a joint 501, the joint 501 and the other parts of the rear bracket 50 are fixedly connected or integrally formed, the upper end of the front bracket 30 is connected to the front of the joint 501 for rotation via a pivot, the lower end of the front bracket connecting rod 20 is connected to the rear of the joint 501 for rotation via another pivot, and the axis lines of the two pivots are parallel to each other and extend respectively in the left and right directions of the stroller. The push handle link 40 is rotatably connected to the rear support 50 through the sixth pivot a6, and the lower end of the push handle link 40 is slidably and rotatably connected to the rear support link 60; specifically in this embodiment, each side support 100 also includes a first sliding member slidably arranged on the rear support link 60, and the first sliding member is specifically a first sliding sleeve 601 slidably sleeved on the rear support link 60, and the lower end of the push handle link 40 is rotatably connected to the first sliding sleeve 601 through the seventh pivot a7. When the frame is in the unfolded state, the lower end of the push handle link 40 is connected to the first position of the rear support link 60 (i.e., the position of the first sliding sleeve 601); when the frame is in the folded state, the lower end of the push handle link 40 is connected to the second position of the rear support link 60, and the second position is located in front of the first position. That is, as the push handle 10 turns over during folding, the first sliding sleeve 601 slides forward along the rear bracket connecting rod 60 under the action of the push handle connecting rod 40, thereby cooperating with the front rod 70 to drive the front bracket 30 and the rear bracket 50 to move closer to each other.

[0044] Each side bracket 100 also includes a backrest rod 90, which can be folded and unfolded along with other components of the side bracket 100. Figure 5-10 As shown, the front rod 70 is connected to the rear support link 60 via a connecting member 701, the first end of the connecting member 701 is fixedly connected to the rear end of the front rod 70, the second end of the connecting member 701 is rotatably connected to the rear support link 60 via the fifth pivot a5, the backrest rod 90 is rotatably connected to the third end of the connecting member 701 via the eighth pivot a8, and the first end, the second end and the third end of the connecting member 701 are arranged in a generally triangular shape. When the frame is in the unfolded state, the connecting member 701 is provided with a slot 702, which is specifically located between the connecting member 701 and the rear end of the rear support link 60 and is formed by splicing the two, and the lower end of the backrest rod 90 is inserted into the slot 702 to stably unfold, as shown in FIG. Figure 5 and 6 shown; reference Figure 8 and 9 As shown, when folded, as the rear support link 60 rotates, the rear support link 60 and the front rod 70 rotate downward relative to the connecting member 701, the blocking effect of the rear support link 60 and the front rod 70 on the backrest rod 90 disappears, and the backrest rod 90 flips downward under its own gravity and moves closer to the front rod 70, achieving the following Fig.10 In this embodiment, there is a distance between the fifth pivot a5 and the rear end of the rear support link 60, and when the frame is folded, the rear end of the rear support link 60 rotates upward to the outside of the connecting member 701.

[0045] Reference Figure 7As shown, the backrest rod 90 includes an outer rod 901, an inner rod 902 slidably inserted in the lower part of the outer rod 901, and a spring arranged between the outer rod 901 and the inner rod 902. The outer rod 901 is rotatably connected to the connecting member 701 through the eighth pivot a8. Specifically, the lower part of the outer rod 901 is provided with a mounting groove for the inner rod 902 to be inserted, and the inner rod 902 is slidably inserted in the mounting groove. The spring is a compression spring 903 arranged between the bottom of the mounting groove and the upper end of the inner rod 902. During the relative unfolding of the front rod 70 and the rear support link 60, the lower end of the inner rod 902 is squeezed by the rear end of the rear support link 60 and slides into the outer rod 901. At the same time, the connecting member 701 is gradually spliced ​​with the rear end of the rear support link 60, and the compression spring 903 is compressed to provide a driving force for the inner rod 902 to be inserted into the slot 702. When the frame is in the unfolded state, the lower end of the inner rod 902 is inserted into the slot 702 under the push of the compression spring 903. Specifically in this embodiment, a long hole 9020 is provided on the inner rod 902, and a connecting pin 9010 is provided in the outer rod 901. The connecting pin 9010 can be inserted into the long hole 9020 slidably along the extension direction of the long hole 9020, thereby allowing the inner rod 902 to slide relative to the outer rod 901 and preventing the inner rod 902 from completely separating from the outer rod 901.

[0046] Reference Figure 1 and 2 As shown, each side support 100 further includes a rear rod 80 located behind the front rod 70, and seats are respectively provided on the front rod 70 and the rear rod 80. The two seats are spaced apart from each other, and the child stroller is used as a double stroller. The front rod 70 serves as a seat rod for the front seat, and the rear rod 80 serves as a seat rod for the rear seat. In addition, the child stroller can also be used as a single-person stroller by only providing one seat on the front rod 70.

[0047] The rear rod 80 is specifically arranged between the rear support 50 and the push handle connecting rod 40. The rear rod 80 is slidably and rotatably connected to the push handle connecting rod 40, and the front end of the rear rod 80 is rotatably connected to the rear support 50 through the ninth pivot a9. When the frame is in the folded state, the rear rod 80, the push handle connecting rod 40 and the rear support 50 are close to each other. Specifically, each side support 100 also includes a second sliding member slidably arranged on the rear rod 80, and the second sliding member is specifically a second sliding sleeve 801 slidably sleeved on the rear rod 80. The push handle connecting rod 40 is rotatably connected to the second sliding sleeve 801 through the tenth pivot a10. The second sliding sleeve 801 is arranged behind the ninth pivot a9. When the frame is folded, the rear rod 80 can be folded together.

[0048] The axis lines of the first pivot a1, the second pivot a2, the third pivot a3, the fourth pivot a4, the fifth pivot a5, the sixth pivot a6, the seventh pivot a7, the eighth pivot a8, the ninth pivot a9 and the tenth pivot a10 in each side bracket 100 are parallel to each other, and preferably extend horizontally along the left-right direction of the child stroller. The axis lines of the corresponding pivots of the two side brackets 100 overlap with each other, such as the axis lines of the first pivots a1 of the two side brackets 100 overlap with each other, the axis lines of the two second pivots a2 of the two side brackets 100 overlap with each other, and so on.

[0049] Reference Figure 1 As shown, the cross support 200 is composed of one or more cross support assemblies and can be folded horizontally so that the side supports 100 on both sides are folded toward the middle, thereby reducing the horizontal size of the stroller after folding. Specifically in this embodiment, a first cross support assembly 21 is provided between the front supports 30 of the two side supports 100 so that the front supports 30 on both sides are close to each other; a second cross support assembly 22 is provided between the rear supports 50 of the two side supports 100 so that the rear supports 50 on both sides are close to each other; a third cross support assembly 23 is provided between the push handle connecting rods 40 of the two side supports 100 so that the push handle connecting rods 40 on both sides are close to each other; a fourth cross support assembly 24 is provided between the backrest rods 90 of the two side supports 100 so that the backrest rods 90 on both sides are close to each other. Each cross support assembly includes at least two connecting rods that are rotatably connected by a pivot to form a cross-shaped structure, and the upper end and the lower end of the connecting rod are rotatably connected to the two parts of the side support 100 respectively.

[0050] The first cross brace assembly 21 includes two first connecting rods 210, the middle parts of the two first connecting rods 210 are connected to each other by pivots to form a cross structure. The upper ends of the two first connecting rods 210 are rotatably connected to the rear ends of the front rods 70 of the two side brackets 100, and the lower ends of the two first connecting rods 210 are rotatably connected to the lower ends of the two front brackets 30.

[0051] The second cross brace assembly 22 includes two second connecting rods 220, the middle parts of the two second connecting rods 220 are connected to each other by pivoting to form a cross structure. The upper ends of the two second connecting rods 220 are rotatably connected to the first sliding sleeves 601 of the two side brackets 100, and the lower ends of the two second connecting rods 220 are rotatably connected to the lower ends of the two rear brackets 50.

[0052] The third cross brace assembly 23 includes two third links 230 and two fourth links 231. The middle parts of the two third links 230 are rotatably connected by pivots to cross each other to form a cross structure. The upper end of each third link 230 is rotatably connected to the inner end of a fourth link 231. The outer ends of the two fourth links 231 are rotatably connected to the second sliding sleeves 801 of the two side brackets 100, and the lower ends of the two third links 230 are rotatably connected to the lower ends of the two push handle links 40.

[0053] The fourth cross brace assembly 24 includes two fifth links 240 and two sixth links 241. The middle parts of the two fifth links 240 are rotatably connected to each other through a pivot to cross each other to form a cross structure. The upper end of each fifth link 240 is rotatably connected to the inner end of one sixth link 241. The outer ends of the two sixth links 241 are rotatably connected to the upper ends of the backrest rods 90 of the two side brackets 100, and the lower ends of the two fifth links 240 are rotatably connected to the lower ends of the two backrest rods 90.

[0054] Reference Figure 1 As shown, when the frame is in the unfolded state, the first cross brace assembly 21, the second cross brace assembly 22, the third cross brace assembly 23 and the fourth cross brace assembly 24 of the cross bracket 200 are unfolded respectively, the two side brackets 100 are spaced apart from each other, the push handle 10, the front bracket 30 and the rear bracket 50 are relatively unfolded, and the lower end of the inner rod 902 of the backrest rod 90 is inserted into the slot 702.

[0055] like Figure 2 and 3 As shown, when the frame is folded, the push handle 10 is pressed downward, so that the lower end of the push handle 10 turns backward and downward, and the push handle connecting rod 40 turns to drive the first sliding sleeve 601 to slide forward along the rear support connecting rod 60, so that the push handle 10 moves closer to the rear support 50, and at the same time, the rear end of the rear rod 80 moves closer to the rear support 50, and the front support 30 moves closer to the rear support 50 under the action of the rear support connecting rod 60 and the front rod 70, and the lower end of the inner rod 902 of the backrest rod 90 gradually moves closer to the front support 30; and as the side support 100 is folded, the first cross support assembly 21, the second cross support assembly 22, the third cross support assembly 23 and the fourth cross support assembly 24 are folded, so that the side supports 100 on both sides are folded toward the middle. Until it is folded as shown in the figure. Figure 4In the state shown, the frame is folded and reaches the folded state, at which time the cross support 200 is folded so that the side supports 100 on both sides are brought together; the upper end of the push handle 10 of each side support 100, the lower end of the push handle connecting rod 40 and the upper end of the rear support 50 (joint 501), the front end of the rear support connecting rod 60, and the rear end of the front rod 70 are brought together, and the joint 501 is generally horizontal, the lower end of the push handle 10, the upper end of the push handle connecting rod 40 and the lower end of the rear support 50, the lower end of the front support 30, and the upper end of the backrest rod 90 are brought together, and the front wheel assemblies 300 on both sides are retracted between the rear wheel assemblies 400 on both sides.

[0056] The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred implementation methods. 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. All equivalent changes or modifications made according to the present invention should be included in the protection scope of the present invention.

Claims

The foldable stroller according to claim 1, wherein the front wheel assembly and the rear wheel assembly are connected to each other through a linking member and a rear support rod, and the foldable stroller has a plurality of side supports, wherein the front wheel assembly and the rear support rod are connected to each other through a linking member.

2. The stroller according to claim 1, characterized in that: The connecting member is rotatably connected to the rear support link via a fifth pivot, and the backrest rod is rotatably connected to the connecting member via an eighth pivot.

3. The stroller according to claim 2, characterized in that: The backrest rod includes an outer rod, an inner rod slidably connected to the lower part of the outer rod, and a spring arranged between the outer rod and the inner rod. The outer rod is rotatably connected to the connecting member through the eighth pivot. During the relative expansion of the front rod and the rear support link, the spring is compressed and provides a driving force for the inner rod to be inserted into the slot; when the frame is in the expanded state, the lower end of the inner rod is inserted into the slot.

4. The stroller according to claim 1, wherein the frame further comprises a foldable cross bracket connected between two or more side brackets; each of the side brackets further comprises: Push handle; A front bracket connecting rod, the upper end of which is rotatably connected to the push handle via a first pivot; A front bracket, the lower end of which is provided with the front wheel assembly; A push handle connecting rod, the upper end of which is rotatably connected to the lower end of the push handle via a second pivot; A rear support, the lower end of which is provided with the rear wheel assembly; wherein the lower end of the front bracket connecting rod, the upper end of the front bracket and the upper end of the rear bracket are connected in a manner of relative rotation; the rear end of the rear bracket connecting rod is rotatably connected to the lower end of the rear bracket through a third pivot, the front rod is rotatably connected to the front bracket through a fourth pivot and its rear end is rotatably connected to the rear bracket connecting rod; the push handle connecting rod is rotatably connected to the rear bracket through a sixth pivot, and the lower end of the push handle connecting rod is slidably and rotatably connected to the rear bracket connecting rod; when the frame is in an unfolded state, the lower end of the push handle connecting rod is connected to a first position of the rear bracket connecting rod; when the frame is in a folded state, the upper end of the push handle is close to the upper end of the front bracket and the upper end of the rear bracket, the lower end of the push handle is close to the lower end of the rear bracket and the lower end of the front bracket, and the lower end of the push handle connecting rod is connected to a second position of the rear bracket connecting rod, and the second position is located in front of the first position.

5. The stroller according to claim 4, characterized in that: Each of the side brackets also includes a first sliding member slidably arranged on the rear bracket connecting rod, and the lower end of the push handle connecting rod is rotatably connected to the first sliding member through a seventh pivot.

6. The stroller according to claim 5, characterized in that: The first sliding member is a first sliding sleeve slidably mounted on the rear support connecting rod.

7. The stroller according to claim 4, characterized in that: Each of the side brackets further comprises a rear rod located behind the front rod, and seats are respectively provided on the front rod and the rear rod.

8. The stroller according to claim 7, characterized in that: The rear rod is slidably and rotatably connected to the push handle connecting rod, and the front end of the rear rod is rotatably connected to the rear bracket through a ninth pivot. When the frame is in a folded state, the rear rod, the push handle connecting rod and the rear bracket are close to each other.

9. The stroller according to claim 8, characterized in that: Each of the side brackets also includes a second sliding member slidably arranged on the rear rod, and the push handle connecting rod is rotatably connected to the second sliding member through a tenth pivot.

10. The stroller according to claim 4, characterized in that: The cross bracket includes one or more cross brace assemblies, and the cross brace assembly includes two connecting rods that are rotatably connected by a pivot to cross and form a cross-shaped structure, and the upper end and lower end of the connecting rod are rotatably connected to the two parts of the side bracket respectively; a cross brace assembly is provided between the front brackets of the two side brackets; and / or, a cross brace assembly is provided between the rear brackets of the two side brackets; and / or, a cross brace assembly is provided between the push handle connecting rods of the two side brackets.

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