Folding stroller

Abstract

The present application relates to a kind of folding stroller, including the frame with unfolded state and folding state, front wheel assembly and rear wheel assembly are arranged in the bottom of the frame, the frame includes two groups of side supports separately arranged in left and right sides, and the cross brace component is set between two groups of the side supports and can be folded along left and right direction, the side support of each side includes: front support rod, side wall rod, push rod, rear support rod, bottom bar, connecting rod and side vertical rod, the frame is in folding state, in the side support of left and right sides, the rear upper support rod and the rear lower support rod opposite sliding shorten, the front support rod, the bottom bar, the connecting rod, the rear support rod, the side wall rod, the side vertical rod and the push rod are folded along front and back direction, the cross brace component is folded along left and right direction so that the side support of two sides is folded along left and right direction.This folding stroller can realize longitudinal folding and folding along left and right direction simultaneously, folding principle is simple, and it is easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to a folding stroller. BACKGROUND

[0002] Most folding strollers can only be folded in the longitudinal direction, and the size of the frame in the left-right direction does not change during folding, which makes the folded stroller still occupy a large space; some folding strollers can also be folded in the left-right direction to reduce the size of the folded stroller, but the folding principle of such strollers is often very complex and the folding operation is cumbersome. SUMMARY

[0003] The purpose of the present application is to provide a new folding stroller.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a folding stroller, comprising a frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly arranged at the bottom of the frame, the frame comprising two groups of side supports arranged on the left and right sides, and a cross support assembly arranged between the two groups of side supports and capable of being folded in the left-right direction, each side of the side support comprising:

[0005] a front support rod, the front support rod extending upwardly and rearwardly, the front wheel assembly being arranged at the bottom of the front support rod;

[0006] a side wall rod, the side wall rod extending in the up-down direction, the lower part of the side wall rod being rotatably connected to the upper part of the front support rod;

[0007] a push rod, the push rod extending in the up-down direction, the upper part of the side wall rod being rotatably connected to the push rod;

[0008] a rear support rod, comprising a rear upper support rod and a rear lower support rod capable of being connected in the up-down direction, the upper part of the rear upper support rod being rotatably connected to the side wall rod, the rear wheel assembly being arranged at the bottom of the rear lower support rod;

[0009] a bottom rod, the bottom rod extending in the front-rear direction, the rear part of the bottom rod being rotatably connected to the lower part of the rear lower support rod, the front part of the bottom rod being rotatably connected to a first sliding member, the first sliding member being slidably arranged on the front support rod in the lengthwise direction of the front support rod;

[0010] a connecting rod, one end of the connecting rod being rotatably connected to the upper part of the rear lower support rod, the other end of the connecting rod being rotatably connected to a second sliding member, the second sliding member being slidably arranged on the bottom rod in the lengthwise direction of the bottom rod;

[0011] A side upright rod extending in the up-down direction, the side upright rod crossing the rear upper support rod and being rotatably connected at the crossing, the upper part of the side upright rod being rotatably connected with the lower part of the push rod around a first rotation center line, the side upright rod being rotatably connected with the second sliding member, the second sliding member being below the first rotation center line along the length direction of the side upright rod;

[0012] In the folded state of the frame, in the side support on each of the left and right sides, the rear upper support rod and the rear lower support rod are relatively slidably shortened, the front support rod, the bottom rod, the connecting rod, the rear support rod, the side wall rod, the side upright rod and the push rod are mutually folded in the front-back direction, and the cross support assembly is folded in the left-right direction so that the side supports on both sides are folded in the left-right direction.

[0013] Preferably, in the process of converting the frame from the unfolded state to the folded state, in the side support on each of the left and right sides, the side upright rod and the side wall rod are both turned downward and to the rear of the rear support rod, the first sliding member slides upward along the front support rod, the second sliding member slides forward along the bottom rod, and the rear upper support rod and the rear lower support rod are slidably shortened in the length direction, so that the rod members in the same side support are mutually folded.

[0014] Preferably, the cross support assembly includes a front cross support assembly arranged between the lower parts of the front support rods on both sides, the front cross support assembly includes two front cross rods each extending in the left-right direction, each of the front cross rods has a first end portion and a second end portion respectively arranged at different ends in the length direction of the front cross rod, the two first end portions are adjacent and rotatably connected around a first shaft, and the two second end portions are respectively rotatably connected to the front support rod on the same side around a second shaft, in the folded state of the frame, the two front cross rods are mutually folded between the two front support rods, and the first end portion is above the second end portion.

[0015] Further, the frame further includes a linkage rod extending in the up-down direction, the linkage rod has two rods respectively arranged on the left and right sides, on each of the left and right sides of the frame, the upper part of the linkage rod is rotatably connected to the first sliding member, and the lower part of the linkage rod is rotatably connected to the front cross rod around a third shaft, wherein the third shaft is between the first shaft and the second shaft along the length direction of the front cross rod.

[0016] Preferably, the cross support assembly further includes a cross support assembly, the cross support assembly includes two diagonal support rods crossing each other and being rotatably connected at the crossing, in the unfolded state of the frame, the diagonal support rods extend in the front-back direction, the front part of the diagonal support rod is rotatably connected to the lower part of the side upright rod on one side, and the rear part of the diagonal support rod is rotatably connected to the rear part of the bottom rod on the other side.

[0017] Further, the front part of the diagonal strut is rotatably connected to the lower part of the side upright via a front connecting member, and when the frame is in the unfolded state, the front connecting member is below the second sliding member along the length extension direction of the side upright, the bottom bar extends upwardly from back to front, the diagonal strut extends upwardly from back to front, and the diagonal strut is below the bottom bar.

[0018] Preferably, the cross strut assembly further comprises a vertical cross strut assembly, which comprises two vertical struts that are crosswise connected and rotatably connected at the cross, and when the frame is in the unfolded state, the vertical struts extend backwardly from bottom to top, the vertical struts are connected between the upper part of the front support and the side upright on both sides, or the vertical struts are connected between the lower part of the side wall and the side upright on both sides.

[0019] Further, the lower part of the vertical strut is rotatably connected to the side support on one side, and the upper part of the vertical strut is rotatably connected to the side support on the other side, wherein the lower part of the vertical strut is rotatably connected with a first connecting member, the upper part of the vertical strut is rotatably connected with a second connecting member, the first connecting member is rotatably connected to the upper part of the front support or the lower part of the side wall, or the first connecting member is rotatably connected with the upper part of the front support and the lower part of the side wall around the same rotation center line; the second connecting member is rotatably connected to the side upright, and when the frame is in the unfolded state, the second connecting member is below the first rotation center line along the length extension direction of the side upright.

[0020] Further, the side support on each side further comprises a seat bar extending in the front-back direction, and a third sliding member rotatably provided on the side wall, the rear part of the seat bar is rotatably connected to the side upright around a second rotation center line, the third sliding member is slidably connected to the seat bar along the length extension direction of the seat bar, the second connecting member is rotatably connected to the side upright around the same rotation center line with the rear part of the seat bar, or when the frame is in the unfolded state, the second connecting member is above or below the second rotation center line along the length extension direction of the side upright.

[0021] In some embodiments, the side support on each side further includes a seat rod extending in the front-rear direction and a third sliding member rotatably disposed on the side support rod. The rear part of the seat rod is rotatably connected to the side upright about a second rotation center line. The third sliding member is slidably connected to the seat rod along the length extension direction of the seat rod. During the process of the frame changing from an unfolded state to a folded state, the third sliding member and the second rotation center line move away from each other. The cross brace assembly further includes a seat cross brace assembly that can be folded in the left-right direction. The seat cross brace assembly is disposed between the seat rods and the third sliding member on both sides.

[0022] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the folding trolley of the present invention can be folded not only in the longitudinal direction but also in the left and right directions. After folding, the trolley is small in size and easy to store and carry. Attached Figure Description

[0023] Appendix Figure 1 This is a three-dimensional structural diagram of a folding trolley in its unfolded state according to a specific embodiment of the present invention.

[0024] Appendix Figure 2 For the appendix Figure 1 Enlarged view of point A in the middle;

[0025] Appendix Figure 3 For the appendix Figure 1 A side view diagram;

[0026] Appendix Figure 4 For the appendix Figure 1 A three-dimensional structural diagram of a folding trolley in the folding process;

[0027] Appendix Figure 5 For the appendix Figure 4 A side view diagram;

[0028] Appendix Figure 6 For the appendix Figure 1 A three-dimensional structural diagram of a folding trolley in its folded state;

[0029] Appendix Figure 7 For the appendix Figure 6 A side view diagram;

[0030] Appendix Figure 8 A three-dimensional structural diagram of a folding trolley in its unfolded state, according to another embodiment;

[0031] Appendix Figure 9 For the appendix Figure 8 A side view diagram;

[0032] The components are: 100, frame; 200, front wheel assembly; 300, rear wheel assembly;

[0033] 1, side support; 11, front support rod; 12, side wall rod; 121, third sliding member; 13, push rod; 131, upper push rod; 132, middle push rod; 133, lower push rod; 134, push handle rod; 14, rear support rod; 141, rear upper support rod; 142, rear lower support rod; 15, bottom rod; 151, first sliding member; 16, connecting rod; 161, second sliding member; 17, side vertical rod; 18, seat rod; 2, cross support assembly; 21, front cross support assembly; 211, front cross rod; 211a, first end portion; 211b, second end portion; 22, cross support assembly; 221, diagonal support assembly; 222, front connecting member; 23, vertical cross support assembly; 231, vertical support rod; 231a, first connecting member; 231b, second connecting member; 24, cross support; 241a, first support rod; 241b, second support rod; 3, linkage rod; 4, push handle; 41, fixed rod; 42, connecting rod; 421, first rod end; 422, second rod end; 43, upper cross rod. DETAILED DESCRIPTION

[0034] The following description of up, down, left, right, front, back, inner, outer and the like related to orientation is defined with reference to the orientation observed by a person pushing the folding stroller when the folding stroller is in the unfolded state, and is only intended to clearly describe the relative position relationship of the rods and components on the folding stroller.

[0035] The technical solutions of the present application will be further described below in conjunction with the drawings and specific embodiments.

[0036] Referring to the folding stroller shown in Figure 1 , Figure 3 , the folding stroller comprises a frame 100 having an unfolded state and a folded state, a front wheel assembly 200 and a rear wheel assembly 300 arranged at the bottom of the frame 100, the frame 100 comprises two groups of side supports 1 arranged on the left and right sides, and a cross support assembly 2 arranged between the two groups of side supports 1 and capable of being folded in the left-right direction, each side support 1 comprises:

[0037] a front support rod 11, the front support rod 11 extends rearward and upward, and the front wheel assembly 200 is arranged at the bottom of the front support rod 11;

[0038] a side wall rod 12, the side wall rod 12 extends in the up-down direction, and the lower part of the side wall rod 12 is rotatably connected to the upper part of the front support rod 11;

[0039] a push rod 13, the push rod 13 extends in the up-down direction, and the upper part of the side wall rod 12 is rotatably connected to the push rod 13;

[0040] The rear support rod 14 comprises a rear upper support rod 141 and a rear lower support rod 142 which are slidably connected in the up-down direction, the upper part of the rear upper support rod 141 is rotatably connected to the side wall rod 12, and the rear wheel assembly 300 is arranged at the bottom of the rear lower support rod 142;

[0041] The bottom rod 15 extends in the front-rear direction, the rear part of the bottom rod 15 is rotatably connected to the lower part of the rear lower support rod 142, and the front part of the bottom rod 15 is rotatably connected with the first sliding member 151 which is slidably arranged on the front support rod 11 in the length direction of the front support rod 11;

[0042] The connecting rod 16 has one end rotatably connected to the upper part of the rear lower support rod 142, and the other end rotatably connected with the second sliding member 161 which is slidably arranged on the bottom rod 15 in the length direction of the bottom rod 15;

[0043] The side vertical rod 17 extends in the up-down direction, and the side vertical rod 17 and the rear upper support rod 141 are crossed and rotatably connected at the crossing part, the upper part of the side vertical rod 17 is rotatably connected with the lower part of the push rod 13 around the first rotation center line X1, the side vertical rod 17 is rotatably connected with the second sliding member 161, and the second sliding member 161 is below the first rotation center line X1 in the length direction of the side vertical rod 17;

[0044] In the folded state of the vehicle frame 100, the rear upper support rod 141 and the rear lower support rod 142 are relatively shortened in the left and right side side supports 1, the front support rod 11, the bottom rod 15, the connecting rod 16, the rear support rod 14, the side wall rod 12, the side vertical rod 17 and the push rod 13 are folded in the front-rear direction, and the cross support assembly 2 is folded in the left-right direction, so that the left and right side supports 1 are folded in the left-right direction.

[0045] Referring to the drawings, the specific structure of the vehicle frame 100 of the embodiment is as follows:

[0046] Each side support 1 further comprises a seat rod 18 extending in the front-rear direction, and a third sliding member 121 rotatably arranged on the side wall rod 12, the rear part of the seat rod 18 is rotatably connected to the side vertical rod 17 around the second rotation center line X2, the second rotation center line X2 and the first rotation center line X1 are parallel to each other and extend in the left-right direction, and in the length direction of the side vertical rod 17, the second rotation center line X2 is below the first rotation center line X1, and the third sliding member 121 is slidably connected with the seat rod 18 in the length direction of the seat rod 18.

[0047] Referring to Figure 1 , Figure 3As shown, the upper portion of the front support rod 11 is rotatably connected with the lower portion of the side wall rod 12 at a third rotation center line X3, which extends along the left-right direction and is below the front support rod 11 and the side wall rod 12.

[0048] In this embodiment, the push rod 13 is slidingly retractable, which includes an upper push rod 131, a middle push rod 132 and a lower push rod 133 arranged in sequence from top to bottom. In the unfolded state, the upper push rod 131, the middle push rod 132 and the lower push rod 133 extend rearward along the same length direction from bottom to top. Figure 1 As shown, the upper push rod 131 is slidingly and fittingly inserted into the rod cavity of the middle push rod 132, and the middle push rod 132 is slidingly and fittingly inserted into the rod cavity of the lower push rod 133. The upper push rod 131, the middle push rod 132 and the lower push rod 133 can be slidingly retracted together along the length direction. Figure 1 、 Figure 3 As shown, the upper portion of the side wall rod 12 is rotatably connected to the lower push rod 133 at a fourth rotation center line X4, which is above the first rotation center line X1 along the length direction of the lower push rod 133.

[0049] In other embodiments, the lower portion of the upper push rod 131, the upper portion of the middle push rod 132 and the lower portion of the middle push rod 132 are rotatably connected together. When folding the vehicle frame 100, the three are retracted together by turning over.

[0050] The vehicle frame 100 further includes a push handle 4 extending along the left-right direction, which is connected between the upper portions of the two upper push rods 131. The push handle 4 includes two groups of fixed rods 41 arranged on the left and right sides, two groups of connecting rods 42 arranged on the left and right sides, and an upper cross rod 43 rotatably connected between the two groups of connecting rods 42. In the unfolded state, the connecting rods 42 and the upper cross rod 43 extend along the left-right direction, one end of the fixed rod 41 is fixedly connected with the upper portion of the upper push rod 131, and the two groups of fixed rods 41 extend upward from the upper portion of the upper push rod 131 and are bent toward each other along the left-right direction. The connecting rod 42 has a first rod end 421 and a second rod end 422, the first rod end 421 of the connecting rod 42 is rotatably connected with the fixed rod 41 on the same side, and the left and right ends of the upper cross rod 43 are rotatably connected with the second rod end 422 of the two groups of connecting rods 42, respectively.

[0051] As shown in FIG. 6, in the unfolded state, the rear upper support rod 141 and the rear lower support rod 142 extend rearward along the same length direction from top to bottom, and the rear upper support rod 141 is slidingly and fittingly inserted into the rod cavity of the rear lower support rod 142 on the same side. Along the length direction of the side wall rod 12, the connection between the rear upper support rod 141 and the side wall rod 12 is above the connection between the side wall rod 12 and the front support rod 11. Figure 1 、 Figure 3 As shown, in the unfolded state, the rear upper support rod 141 and the rear lower support rod 142 extend rearward along the same length direction from top to bottom, and the rear upper support rod 141 is slidingly and fittingly inserted into the rod cavity of the rear lower support rod 142 on the same side. Along the length direction of the side wall rod 12, the connection between the rear upper support rod 141 and the side wall rod 12 is above the connection between the side wall rod 12 and the front support rod 11.

[0052] In the front-rear direction, the connection between the rear portion of the bottom bar 15 and the rear lower support bar 142 is located in front of the rear wheel assembly 300, and the front portion of the bottom bar 15 is rotatably connected to the first sliding member 151 about a fifth rotation center line X5, which is always located in front of the third rotation center line X3 in the length direction of the front support bar 11. The first rotation center line X1, the second rotation center line X2, the third rotation center line X3, the fourth rotation center line X4, and the fifth rotation center line X5 are parallel to each other and extend in the left-right direction.

[0053] Referring to FIG. 1, the front support bar 11 is rotatably connected to the first sliding member 151 about a first rotation center line X1, and the rear support bar 12 is rotatably connected to the second sliding member 161 about a second rotation center line X2. The first rotation center line X1 and the second rotation center line X2 are parallel to each other and extend in the left-right direction. Figure 1 As shown in FIG. 1, in the unfolded state, the connecting rod 16 extends in the front-rear direction and is located on each side of the frame 100. The rear end portion of the connecting rod 16 is rotatably connected to the upper portion of the rear lower support bar 142 about a sixth rotation center line X6, and the front end portion of the connecting rod 16 is rotatably connected to the second sliding member 161 about a seventh rotation center line X7. The sixth rotation center line X6 and the seventh rotation center line X7 are parallel to each other and extend in the left-right direction.

[0054] Referring to FIG. 1, the front support bar 11 is rotatably connected to the first sliding member 151 about a first rotation center line X1, and the rear support bar 12 is rotatably connected to the second sliding member 161 about a second rotation center line X2. The first rotation center line X1 and the second rotation center line X2 are parallel to each other and extend in the left-right direction. Figure 2 As shown in FIG. 1, the side stand bar 17 is located on each side of the frame 100. The middle portion of the side stand bar 17 is rotatably connected to the rear upper support bar 141 about an eighth rotation center line X8, and the side stand bar 17 is rotatably connected to the second sliding member 161 about a ninth rotation center line X9. In the length direction of the bottom bar 15, the ninth rotation center line X9 is located in front of the seventh rotation center line X7. The seventh rotation center line X7, the eighth rotation center line X8, and the ninth rotation center line X9 are parallel to each other and extend in the left-right direction.

[0055] The cross support assembly 2 includes a front cross support assembly 21 arranged between the lower portions of the two front support bars 11. The front cross support assembly 21 includes two front cross bars 211 each extending in the left-right direction. Each front cross bar 211 has a first end portion 211a and a second end portion 211b arranged at different ends in the length direction of the front cross bar 211. The two first end portions 211a are adjacent to each other and rotatably connected about a first shaft (not shown in the figure). The two second end portions 211b are each rotatably connected to the front support bar 11 on the same side as the second end portion about a second shaft (not shown in the figure). Specifically, in the unfolded state, the two front cross bars 211 each extend in the left-right direction. The first shaft and the second shaft are parallel to each other and extend in the up-down direction. During folding of the frame 100, the two front cross bars 211 can be rotated towards each other and folded together.

[0056] The frame 100 further includes a linkage bar 3 extending in the up-down direction. The linkage bar 3 has two linkage bars arranged on the left and right sides of the frame 100. The upper portion of the linkage bar 3 is rotatably connected to the first sliding member 151, and the lower portion of the linkage bar 3 is rotatably connected to the front cross bar 211 about a third shaft (not shown in the figure). The third shaft extends in the length direction of the front cross bar 211 between the first shaft and the second shaft.

[0057] The cross support assembly 22 comprises two diagonal support rods 221 which are crossed with each other and rotatably connected at the crossing. When the frame 100 is in the unfolded state, the diagonal support rods 221 extend in the front-rear direction, the front portions of the diagonal support rods 221 are rotatably connected to the lower portions of the side upright rods 17, and the rear portions of the diagonal support rods 221 are rotatably connected to the rear portions of the bottom rods 15. Specifically, as shown in Figure 1 When the frame 100 is in the unfolded state, the front portions of the diagonal support rods 221 are rotatably connected to the lower portions of the side upright rods 17 through the front connecting members 222, the front connecting members 222 are located below the second sliding members 161 along the length direction of the side upright rods 17, the bottom rods 15 and the diagonal support rods 221 both extend upwardly and rearwardly from rear to front, and the diagonal support rods 221 are located below the bottom rods 15.

[0058] The seat cross support assembly 24 is arranged between the seat rods 18 and the third sliding members 121 and can be folded in the left-right direction. In the present embodiment, as shown in Figure 1 The seat cross support assembly 24 comprises two groups of cross supports 241 arranged on the left and right sides. Each group of cross supports 241 comprises a first support rod 241a and a second support rod 241b which are crossed and rotatably connected at the crossing. The two first support rods 241a are rotatably connected at one end and rotatably connected to the same side third sliding member 121 at the other end. The two second support rods 241b are rotatably connected at one end and rotatably connected to the rear portion of the same side seat rod 18 at the other end.

[0059] When the frame 100 is in the unfolded state, the cross support assembly 22 and the seat cross support assembly 24 are unfolded in the left-right direction, the two groups of front cross rods 211 extend in the same direction, the front cross support assembly 21 as a whole extends in the left-right direction, the connecting rod 42 and the upper cross rod 43 of the handle 4 extend in the same direction, the upper pushing rod 131, the middle pushing rod 132 and the lower pushing rod 133 slide and unfold in the length direction, the rear upper support rod 141 and the rear lower support rod 142 slide and unfold in the length direction, and the side upright rod 17 extends rearwardly and upwardly from bottom to top. In this state, the front wheel assembly 200 and the rear wheel assembly 300 are supported on the ground in front and rear, the frame 100 is unfolded in the left-right direction, and the seat plate for the child to sit on is arranged on the two seat rods 18, the seat plate is located above the seat cross support assembly 23, and the seat cross support assembly 23 can provide support for the seat plate. In use, the child sits on the seat plate, the child's feet can be supported on the front cross support assembly 21, and the caregiver drives the stroller forward by pushing the handle.

[0060] When the frame 100 is converted from the unfolded state to the folded state, as shown in Figure 4 ,Figure 5 As shown, the upper horizontal bar 43 is pressed down and pushed forward. During the process of pressing down the upper horizontal bar 43, the upper push rod 131, the middle push rod 132, and the lower push rod 133 in the side supports 1 on both sides retract together along the length direction, and at the same time, the push rod 13 moves downward as a whole. During the process of pushing the upper horizontal bar 43 forward, the push rod 13 moves forward as a whole. Driven by the push rod 13, the side upright 17 and the side surrounding rod 12 both flip downward and backward toward the rear support rod 14. The side upright 17 drives the seat rod 18 to flip backward, and the seat rod 18 slides backward relative to the third sliding member 121. The three sliding members 121 are far apart from the second rotation center line X2; driven by the side upright 17, the rear lower support rod 142 and the rear upper support rod 141 slide and retract along the length direction, while the side upright 17 drives the second sliding member 161 to slide forward along the bottom rod 15, and drives the bottom rod 15 to fold back relative to the rear support rod 14; the bottom rod 15 drives the first sliding member 151 to slide upward along the front support rod 11, and the first sliding member 151 drives the front support rod 11 to fold back relative to the rear support rod 14, and finally makes the rods in the same side bracket 1 retract together in the front and rear direction.

[0061] As the frame 100 folds in the front-rear direction, the upper crossbar 43 moves downward, causing the second ends 422 of the two sets of connecting rods 42 to move downward together. The first ends 421 of the two connecting rods 42 drive the push rods 13 on the left and right sides to move towards each other. The push rods 13 drive the side supports 1 on the left and right sides to fold towards each other. The seat cross brace assembly 24 and the cross brace assembly 21 both fold in the left and right direction. As the first sliding member 151 slides upward, the first sliding member 151 drives the linkage rod 3 to move upward, and in conjunction, causes the front cross brace assembly 21 to fold in the left and right direction. The two front crossbars 211 on the left and right sides rotate towards each other around the first axis and fold together, ultimately causing the frame 100 to fold together in the left and right direction.

[0062] The stroller frame 100 is in a folded state, see below. Figure 6 , Figure 7 As shown, the two front crossbars 211 are gathered together between the two front support rods 11, and the first end 211a is located above the second end 211b. The front support rod 11, bottom rod 15, rear support rod 14, side support rod 12, and push rod 13 are folded together from front to back. The seat rod 18 is converted to extend in the vertical direction. The side upright rod 17 is upside down. The seat rod 18 and the side upright rod 17 are gathered together between the two side support rods 12 in the left and right direction. The front wheel assembly 200 is gathered together between the rear wheel assembly 300 in the left and right direction and is located between the two rear support rods 14.

[0063] Example 2

[0064] See Figure 8 , Figure 9As shown, the main difference between this embodiment and embodiment 1 is that the frame 100 in this embodiment does not have a seat cross brace assembly 24, but the cross brace assembly 2 in this embodiment has a vertical cross brace assembly 23. The vertical cross brace assembly 23 includes two vertical support rods 231 that cross each other and are rotatably connected at the intersection. When the frame 100 is in the unfolded state, the vertical support rods 231 extend backward from bottom to top. The vertical support rods 231 are connected between the upper part of the front support rods 11 on both sides and the side uprights 17 on both sides, or the vertical support rods 231 are connected between the lower part of the side rails 12 on both sides and the side uprights 17 on both sides.

[0065] Specifically, the lower part of each support rod 231 is rotatably connected to a side bracket 1 on one side, and the upper part of each support rod 231 is rotatably connected to a side bracket 1 on the other side. The lower part of the upright support rod 231 is rotatably connected to a first connector 213a, and the upper part of the upright support rod 231 is rotatably connected to a second connector 231b. The first connector 231a is rotatably connected to the upper part of the front support rod 11 or rotatably connected to the lower part of the side support rod 12. Alternatively, the first connector 231a is rotatably connected to the upper part of the front support rod 11 and the lower part of the side support rod 12 around the same rotation center line. The second connector 231b is rotatably connected to the side upright rod 17. When the frame 100 is in the unfolded state, the second connector 231b is located below the first rotation center line X1 in the length extension direction of the side upright rod 17, and the second connector 231b is rotatably connected to the rear part of the seat rod 18 around the same rotation center line on the side upright rod 17. Alternatively, when the frame 100 is in the unfolded state, the second connector 231b is located above or below the second rotation center line X2 in the length extension direction of the side upright rod 17.

[0066] In this embodiment, the first connector 231a extends in the left-right direction, and its axis extends collinearly with the third rotation center line X3. The first connector 231a, the upper part of the front support rod 11, and the lower part of the side support rod 12 are rotatably connected together around the third rotation center line X3. The second connector 231b extends in the left-right direction, and its axis extends collinearly with the second rotation center line X2. The second connector 231b and the rear part of the seat rod 18 are rotatably connected to the side support rod 17 around the second rotation center line X2.

[0067] The folding principle and folding process of this embodiment are roughly the same as those of embodiment 1. By pressing down and pushing forward the upper crossbar 43, the frame 100 is driven and folded in the left and right directions, and the rods in the side bracket 1 are folded together in the front and back directions. During the process of the side brackets 1 on the left and right sides folding together, the vertical crossbar assembly 23 is folded in the left and right directions.

[0068] In summary, the folding stroller of the above two embodiments can be folded in the longitudinal direction and the left-right direction, and the stroller folding principle is simple. Only by pressing and pushing the upper cross bar 43 forward, the folding of the stroller frame 100 in two directions can be realized.

[0069] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A folding trolley, comprising a frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly disposed at the bottom of the frame, the frame comprising two sets of side supports disposed on the left and right sides, and a cross brace assembly disposed between the two sets of side supports and capable of folding in the left and right direction, characterized in that: Each of the side supports includes: A front strut, which extends rearward at an angle from bottom to top, and the front wheel assembly is located at the bottom of the front strut; Side rail, the side rail extends in the vertical direction, and the lower part of the side rail is rotatably connected to the upper part of the front support rod; A push rod that extends vertically, and the upper part of the side rail is rotatably connected to the push rod; The rear support rod includes an upper rear support rod and a lower rear support rod that can be slidably connected in the vertical direction. The upper part of the upper rear support rod is rotatably connected to the side rail, and the rear wheel assembly is located at the bottom of the lower rear support rod. A base rod extends in a front-to-back direction. The rear part of the base rod is rotatably connected to the lower part of the rear lower support rod. The front part of the base rod is rotatably connected to a first sliding member. The first sliding member is slidably disposed on the front support rod along the length extension direction of the front support rod. A connecting rod, one end of which is rotatably connected to the upper part of the rear lower support rod, and the other end of which is rotatably connected to a second sliding member, the second sliding member being slidably disposed on the bottom rod along the length extension direction of the bottom rod; A side support rod extends vertically and intersects with the rear upper support rod and is rotatably connected at the intersection. The upper part of the side support rod is rotatably connected to the lower part of the push rod around a first rotation center line. The side support rod is rotatably connected to a second sliding member, and the second sliding member is located below the first rotation center line along the length extension direction of the side support rod. When the frame transitions from an unfolded state to a folded state, the push rod moves downward and forward as a whole, the side uprights and the side rails face downward and flip backward toward the rear support rod, the side uprights drive the second sliding member to slide forward along the bottom rod, and drive the bottom rod to fold backward relative to the rear support rod, the rear lower support rod and the rear upper support rod slide and retract along the length direction, the bottom rod drives the first sliding member to slide upward along the front support rod, and the first sliding member drives the front support rod to fold toward the rear support rod; When the frame is folded, the upper rear support rod and the lower rear support rod of each side bracket slide and shorten relative to each other. The front support rod, the bottom rod, the connecting rod, the rear support rod, the side rail rod, the side upright rod and the push rod retract towards each other in the front-back direction. The cross brace assembly folds in the left-right direction, causing the side brackets on both sides to retract in the left-right direction.

2. The folding trolley according to claim 1, characterized in that: During the transition of the frame from the unfolded state to the folded state, the side uprights and side rails of the side supports on both the left and right sides face downwards and flip backwards towards the rear support. The first sliding member slides upwards along the front support, the second sliding member slides forward along the bottom rod, and the upper rear support and the lower rear support slide and retract along the length direction, so that the rods in the side supports on the same side retract towards each other.

3. The folding trolley according to claim 1, characterized in that: The cross brace assembly includes a front cross brace assembly disposed between the lower parts of the two front support rods. The front cross brace assembly includes two front cross rods extending in the left-right direction. Each front cross rod has a first end and a second end disposed at opposite ends in its own length direction. The two first ends are adjacent and rotatably connected about a first axis. The two second ends are rotatably connected about a second axis to the front support rod on the same side. When the trolley frame is in a folded state, the two front cross rods are folded together between the two front support rods, and the first end is located above the second end.

4. The folding trolley according to claim 3, characterized in that: The frame also includes a linkage rod extending in the vertical direction. The linkage rod has two rods respectively located on the left and right sides. On each side of the frame, the upper part of the linkage rod is rotatably connected to the first sliding member, and the lower part of the linkage rod is rotatably connected to the front crossbar about a third axis. The third axis is located between the first axis and the second axis along the length extension direction of the front crossbar.

5. The folding trolley according to claim 1, characterized in that: The cross brace assembly also includes a cross brace assembly, which includes two diagonal braces that cross each other and are rotatably connected at the intersection. When the frame is in the unfolded state, the diagonal braces extend in the front-rear direction. The front part of the diagonal brace is rotatably connected to the lower part of the side upright on one side, and the rear part of the diagonal brace is rotatably connected to the rear part of the bottom rod on the other side.

6. The folding trolley according to claim 5, characterized in that: On each side of the frame, the front part of the diagonal brace is rotatably connected to the lower part of the side upright through a front connector. When the frame is in the unfolded state, along the length extension direction of the side upright, the front connector is located below the second sliding member, the bottom rod extends gradually upward from back to front, and the diagonal brace extends gradually upward from back to front, with the diagonal brace located below the bottom rod.

7. The folding trolley according to claim 1, characterized in that: The cross brace assembly also includes a vertical cross brace assembly, which includes two vertical brace rods that cross each other and are rotatably connected at the intersection. When the frame is in the unfolded state, the vertical brace rods extend backward from bottom to top. The vertical brace rods are connected between the upper part of the front support rods on both sides and the side uprights on both sides, or the vertical brace rods are connected between the lower part of the side rails on both sides and the side uprights on both sides.

8. The folding trolley according to claim 7, characterized in that: The lower part of each of the uprights is rotatably connected to one side bracket and the upper part of the upright is rotatably connected to the other side bracket. The lower part of the upright is rotatably connected to a first connector, and the upper part of the upright is rotatably connected to a second connector. The first connector is rotatably connected to the upper part of the front support rod or rotatably connected to the lower part of the side support rod, or the first connector is rotatably connected to the upper part of the front support rod and the lower part of the side support rod around the same rotation center line. The second connector is rotatably connected to the side upright. When the frame is in the unfolded state, the second connector is located below the first rotation center line in the length extension direction of the side upright.

9. The folding trolley according to claim 8, characterized in that: Each side bracket further includes a seat rod extending in the front-rear direction and a third sliding member rotatably mounted on the side support rod. The rear part of the seat rod is rotatably connected to the side upright rod about a second rotation center line. The third sliding member is slidably connected to the seat rod along the length extension direction of the seat rod. The second connecting member is rotatably connected to the rear part of the seat rod about the same rotation center line on the side upright rod. Alternatively, when the frame is in the unfolded state, the second connecting member is located above or below the second rotation center line in the length extension direction of the side upright rod.

10. The folding trolley according to any one of claims 1 to 6, characterized in that: Each side bracket also includes a seat rod extending in the front-rear direction and a third sliding member rotatably mounted on the side rail. The rear part of the seat rod is rotatably connected to the side upright about a second rotation center line. The third sliding member is slidably connected to the seat rod along the length extension direction of the seat rod. During the conversion of the frame from the unfolded state to the folded state, the third sliding member and the second rotation center line move away from each other. The cross brace assembly also includes a seat cross brace assembly that can be folded in the left-right direction. The seat cross brace assembly is disposed between the seat rods and the third sliding member on both sides.

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