A child's pushchair

Abstract

The application discloses a child stroller, a bottom support frame comprising front legs and rear legs, a supporting rod, a first linkage device arranged on the supporting rod and capable of driving the front legs to rotate and close to the rear legs, the rear legs comprising left and right mounting portions rotatably connected to the left and right sides of the front legs, a left rear leg rotatably connected to the left mounting portion, and a right rear leg rotatably connected to the right mounting portion, a second linkage assembly arranged between the bottom support frame and the supporting rod and capable of driving the left and right rear legs to close to each other, rear wheels connected to the left and right rear legs, a supporting piece connected to the bottom support frame, a seat portion arranged on the supporting piece and connected to the supporting rod at the other end when the seat portion is unfolded, the second linkage assembly comprising a first linkage rod rotatably connected to the left rear leg, a second linkage rod rotatably connected to the right rear leg, and a folding assembly arranged on the supporting rod and capable of driving the first and second linkage rods to close to each other. The application provides a child stroller with a small volume after being folded.

Description

[Technical Field]

[0001] This invention relates to a children's stroller. [Background Technology]

[0002] Currently, strollers have become an indispensable item for children during their growth. Most strollers on the market can be folded or unfolded, but existing strollers have complex transmission structures with many linkages, and their size remains relatively large even when folded. Therefore, there is a strong desire for a stroller that is easy to fold and unfold, has a simple structure, and is compact when folded. This invention provides a new embodiment. [Summary of the Invention]

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a children's stroller that is easy to fold and unfold, has a simple folding structure, and is small in size after folding.

[0004] This invention is achieved through the following technical solution:

[0005] A stroller for children, capable of moving from an unfolded state to a folded state after unlocking the locking device, includes a bottom support frame 1. The bottom support frame 1 includes front legs 11, with front wheels 111 connected to the front legs 11. The bottom support frame 1 also includes a rear leg 12 rotatably connected to the front legs 11 about a first axis A. A support rod 2 is rotatably connected to the bottom support frame 1 about a second axis B. A first linkage device 3 is provided between the support rod 2 and the bottom support frame 1, which, when the support rod 2 rotates and folds relative to the bottom support frame 1 about the second axis B, causes the front legs 11 to rotate and move closer to the rear legs 12. The rear leg 12 includes a left mounting part 121 and a right mounting part 122 that are rotatably connected to the left and right sides of the front leg 11 around a first axis A, respectively. The left mounting part 121 is rotatably connected to the left rear leg 123 around a third axis C, and the right mounting part 122 is rotatably connected to the right rear leg 124 around a fourth axis D. A second linkage component 4 is provided between the bottom support frame 1 and the support rod 2, which can drive the left rear leg 123 and the right rear leg 124 to move closer to each other when the support rod 2 rotates and folds relative to the bottom support frame 1 around the second axis B. Rear wheels 125 are connected to both the left rear leg 123 and the right rear leg 124.

[0006] The bottom support frame 1 is rotatably connected to a support member 5 around the fifth axis E. The support member 5 is provided with a seat part 6 that can be rotated relative to it to unfold or fold. When the seat part 6 is in the unfolded state, the other end of the seat part 6 can be connected to the support rod 2.

[0007] The second linkage component 4 includes a first linkage rod 41 with one end rotatably connected to the left rear leg 123 around the sixth axis F, and a second linkage rod 42 with one end rotatably connected to the right rear leg 124 around the seventh axis G. A folding component 43 is provided between the support rod 2, the front leg 11, the first linkage rod 41 and the second linkage rod 42, which can drive the first linkage rod 41 and the second linkage rod 42 to move closer to each other when the support rod 2 rotates and moves closer to the rear leg 12.

[0008] The folding assembly 43 includes a third linkage rod 431, one end of which is rotatably connected to the front leg 11 about the eighth axis H. The other end of the third linkage rod 431 is connected to a mounting base 432. The mounting base 432 is rotatably connected to the third linkage rod 431 about the ninth axis I. A connecting base 433 is connected to the mounting base 432. A fourth linkage rod 434, which can rotate relative to the support rod 2, is provided between the connecting base 433 and the support rod 2. One end of the fourth linkage rod 434 is rotatably connected to the connecting base 433 about the eleventh axis K. The other end of the fourth linkage rod 434 is rotatably connected to the support rod 2 about the twelfth axis L. The other end of the first linkage rod 41 is rotatably connected to the connecting base 433 about the thirteenth axis M. The other end of the second linkage rod 42 is rotatably connected to the connecting base 433 about the fourteenth axis N.

[0009] The ninth axis I is parallel to the eleventh axis K, and the thirteenth axis M and the fourteenth axis N are collinear and intersect the ninth axis I and the eleventh axis K.

[0010] The support rod 2 is also rotatably connected to a backrest 71 around the fifteenth axis O. The support rod 2 is also connected to a sliding sleeve 72 that can slide along it. A connecting rod 73 is provided between the sliding sleeve 72 and the backrest 71, which can rotate relative to the two and can drive the backrest 71 to move closer to the support rod 2 when the sliding sleeve 72 slides. One end of the connecting rod 73 is rotatably connected to the backrest 71 around the sixteenth axis P, and the other end of the connecting rod 73 is rotatably connected to the sliding sleeve 72 around the seventeenth axis Q.

[0011] The first linkage device 3 includes a first linkage shaft 31 that passes laterally through the left rear leg 123, the front leg 11, the support rod 2, and the right rear leg 124. The support rod 2 is provided with a first pressing groove 32 that can push the first linkage shaft 31 to move when the support rod 2 rotates and approaches the rear leg 12. The left rear leg 123 and the right rear leg 124 are both provided with guide grooves 34 that allow the first linkage shaft 31 to slide within them. The front leg 11 is provided with a second pressing groove 33 that is opposite in direction to the first pressing groove 32. The first linkage shaft 31 passes through the first pressing groove 32, the second pressing groove 33, and the guide groove 34. During the process of the support rod 2 rotating and approaching the rear leg 12, the second pressing groove 33 is pressed by the first linkage shaft 31, causing the front leg 11 and the rear leg 12 to rotate and approach each other.

[0012] The first pressing groove 32 is an arc-shaped groove, and the first pressing groove 32 is provided with a first pressing surface 321 that can push the first linkage shaft 31. The second pressing groove 33 is an arc-shaped groove, and the second pressing groove 33 is provided with a second pressing surface 331 that can be pressed by the first linkage shaft 31.

[0013] A locking assembly 8 is provided between the seat portion 6 and the support rod 2 to lock the two together. The seat portion 6 is provided with a connecting shaft 61. The locking assembly 8 includes a rotating piece 81 disposed on the support rod 2 and rotatable relative to it. The rotating piece 81 is provided with a slot 811 that allows the connecting shaft 61 to engage and forms a locking space 100 with the support rod 100. The support rod 2 is also provided with a locking position 82, which is rotatable relative to it and can engage or disengage from the locking position 82. The locking member 83 is engaged in the locking position 82, and when the locking member 83 is engaged in the locking position 82, the connecting shaft 61 is locked in the locking space 100. A torsion spring 84 is provided between the rotating plate 81 and the support rod 2, which can push the rotating plate 81 to reset. An elastic member 85 is also provided between the locking member 83 and the support rod 2, which can push the locking member 83 to reset. A push rod 9 is also connected in the support rod 2, which can slide relative to it. The push rod 9 is provided with a pushing part 86 that can push the locking member 83 out of the locking position 82.

[0014] The rotating piece 81 is provided with a first abutting surface 812, and the locking member 83 is provided with a second abutting surface 831 that can abut against the first abutting surface 811 to prevent the rotating piece 81 from rotating.

[0015] Compared with the prior art, the present invention has the following advantages: When the stroller of the present invention needs to be folded, the locking device is first unlocked, and then the support rod is pushed to rotate relative to the front leg around the second axis B and move towards the rear leg. During the process of pushing the support rod to rotate towards the rear leg, the first linkage device is driven by the support rod. At this time, the front leg rotates relative to the rear leg around the first axis A and moves towards the rear leg. At the same time, the second linkage component is also driven by the support rod, so that the left rear leg rotates relative to the left mounting part around the third axis C and moves towards the right rear leg, and the right rear leg rotates relative to the right mounting part around the fourth axis D and moves towards the left rear leg. Thus, the right rear leg and the left rear leg move towards each other. When the front leg moves towards the right and left rear legs, the right and left rear legs move towards each other, and the support rod moves towards the right and left rear legs, the entire stroller is folded. The folded stroller occupies less space and is easier to place and carry. When folding, the stroller of this invention only requires unlocking the locking device and rotating the support rod to bring the front legs together with the right and left rear legs, and at the same time, the right and left rear legs can be brought together and folded. The folding operation is convenient, and the stroller occupies a small volume after folding. [Attached Image Description]

[0016] Figure 1 This is one of the perspective views of the stroller of the present invention;

[0017] Figure 2 This is the second perspective view of the stroller of the present invention;

[0018] Figure 3 This is a side view of the stroller of the present invention;

[0019] Figure 4 This is an exploded view of the stroller of the present invention;

[0020] Figure 5 This is one of the exploded views of the first linkage device in the stroller of the present invention;

[0021] Figure 6 This is the second exploded view of the first linkage device in the stroller of the present invention;

[0022] Figure 7 This is a cross-sectional view of the locking assembly in the stroller of the present invention;

[0023] Figure 8 This is a cross-sectional view of the locking component in the stroller of the present invention when it is unlocked;

[0024] Figure 9 This is a perspective view of the locking mechanism, rotating plate, and torsion spring in the stroller of the present invention;

[0025] Figure 10 This is a perspective view of the push rod in the stroller of the present invention;

[0026] Figure 11This is a perspective view of the second linkage device in the stroller of the present invention;

[0027] Figure 12 This is a side view of the stroller of the present invention when folded;

[0028] Figure 13 This is a perspective view of the stroller of the present invention when folded;

[0029] Figure 14 This is a perspective view of another type of handrail for the stroller of the present invention.

Detailed Implementation Methods

[0030] The present invention will now be further described with reference to the accompanying drawings:

[0031] like Figures 1 to 14 As shown, the present invention provides a child stroller that can move from an unfolded state to a folded state after the locking device is unlocked. It includes a bottom support frame 1, which includes front legs 11 with front wheels 111 connected to them. The bottom support frame 1 also includes a rear leg 12 rotatably connected to the front legs 11 about a first axis A. A support rod 2 is rotatably connected to the bottom support frame 1 about a second axis B. A first linkage device is provided between the support rod 2 and the bottom support frame 1, which, when the support rod 2 rotates and folds relative to the bottom support frame 1 about the second axis B, drives the front legs 11 to rotate and move closer to the rear legs 12. 3. The rear leg 12 includes a left mounting part 121 and a right mounting part 122 that are rotatably connected to the left and right sides of the front leg 11 around a first axis A. The left mounting part 121 is rotatably connected to a left rear leg 123 around a third axis C, and the right mounting part 122 is rotatably connected to a right rear leg 124 around a fourth axis D. A second linkage component 4 is provided between the bottom support frame 1 and the support rod 2, which can drive the left rear leg 123 and the right rear leg 124 to move closer to each other when the support rod 2 rotates and folds relative to the bottom support frame 1 around a second axis B. Rear wheels 125 are connected to both the left rear leg 123 and the right rear leg 124.

[0032] When the stroller of this invention needs to be folded, first unlock the locking device, then push the support rod 2 to rotate relative to the front leg 11 around the second axis B and move towards the rear leg 12. During the process of pushing the support rod 2 to rotate towards the rear leg 12, the first linkage device 3 is driven by the support rod 2. At this time, the front leg 11 rotates relative to the rear leg 12 around the first axis A and moves towards the rear leg 12. At the same time, the second linkage component 4 is also driven by the support rod 2, so that the left rear leg 123 rotates relative to the left mounting part 121 around the third axis C and moves towards the right rear leg 12. The stroller moves in 24 directions. The right rear leg 124 rotates relative to the right mounting part 122 around the fourth axis D and moves towards the left rear leg 123, thereby bringing the right rear leg 124 and the left rear leg 123 closer together. When the front leg 11 is close to the right rear leg 124 and the left rear leg 123, and the support rod 2 is close to the right rear leg 124 and the left rear leg 123, the entire stroller is folded. The folded stroller occupies less space and is easier to place and carry. When folding the stroller of this invention, it is only necessary to rotate the support rod 2 towards the rear leg 12 after unlocking the locking device to bring the front leg 11 towards the right rear leg 124 and the left rear leg 123, and at the same time, the right rear leg 124 and the left rear leg 123 are brought together to fold. The folding operation is convenient, and the folded stroller occupies a small volume.

[0033] like Figure 3 As shown, a support member 5 is rotatably connected to the bottom support frame 1 about the fifth axis E. The support member 5 has a seat portion 6 that can rotate relative to it and be unfolded or folded. When the seat portion 6 is unfolded, its other end can be connected to the support rod 2. When the stroller is folded, the support member 5 can rotate relative to the front leg 11 about the fifth axis E and move closer to the rear leg 12. The seat portion 6 on the support member 5 can also rotate relative to the support member 5 and move closer to it. When the stroller is unfolded, the seat portion 6 can be connected to the support rod 2, providing more stable support and greater safety for the child.

[0034] like Figure 4 and Figure 11As shown, the second linkage component 4 includes a first linkage rod 41, one end of which is rotatably connected to the left hind leg 123 around the sixth axis F. A second linkage rod 42, one end of which rotates relative to the right hind leg 124 around the seventh axis G, is connected to the right hind leg 124. A folding component 43 is provided between the support rod 2, the front leg 11, the first linkage rod 41, and the second linkage rod 42, which can drive the first linkage rod 41 and the second linkage rod 42 to move closer together when the support rod 2 rotates towards the hind leg 12. When the support rod 2 rotates towards the hind leg 12, it drives the folding component 43 to move. The folding component 43 not only drives the front leg 11 to rotate towards the hind leg 12, but also causes the first linkage rod 41 to rotate relative to the left hind leg 123 around the sixth axis F, and the second linkage rod 42 to rotate relative to the right hind leg 124 around the seventh axis G, thereby pulling the left hind leg 123 and the right hind leg 124 closer together.

[0035] like Figure 4 and Figure 11As shown, the folding assembly 43 includes a third linkage rod 431, one end of which is rotatably connected to the front leg 11 about the eighth axis H. The other end of the third linkage rod 431 is connected to a mounting base 432. The mounting base 432 is rotatably connected to the third linkage rod 431 about the ninth axis I. A connecting base 433 is connected to the mounting base 432. A fourth linkage rod 434, which can rotate relative to the support rod 2, is provided between the connecting base 433 and the support rod 2. One end of the fourth linkage rod 434 is rotatably connected to the connecting base 433 about the eleventh axis K. The other end of the fourth linkage rod 434 is rotatably connected to the support rod 2 about the twelfth axis L. The other end of the first linkage rod 41 is rotatably connected to the connecting base 433 about the thirteenth axis M. The other end of the second linkage rod 42 is rotatably connected to the connecting base 433 about the fourteenth axis N. When the support rod 2 rotates towards the rear leg 12, it pushes the fourth linkage rod 434. One end of the fourth linkage rod 434 rotates relative to the support rod 2 around the twelfth axis L, and the other end rotates relative to the connecting seat 433 around the eleventh axis K. At this time, the connecting seat 433 is pushed and moved by the fourth linkage rod 434, and the mounting seat 432 is moved by the connecting seat 433. During the movement of the connecting seat 433 and the mounting seat 432, one end of the first linkage rod 41 rotates relative to the left rear leg 123 around the sixth axis F, and the other end rotates relative to the connecting seat 433 around the thirteenth axis M. The second linkage rod 42 rotates relative to the right rear leg 124 around the seventh axis G. The other end rotates relative to the connecting seat 433 around the fourteenth axis N, causing the first linkage rod 41 and the second linkage rod 42 to move closer together. Driven by the first linkage rod 41 and the second linkage rod 42, the left rear leg 123 and the right rear leg 124 move closer together. Simultaneously, the mounting seat 432 rotates relative to the third linkage rod 431 around the ninth axis I, thereby moving the third linkage rod 431. The front end of the third linkage rod 431 rotates relative to the front leg 11 around the eighth axis H. At this time, the third linkage rod 431 and the fourth linkage rod 434 gradually move closer together, thus cooperating with the first linkage device 3 to pull the front leg 11 towards the rear leg 12, making the stroller fold more smoothly. A shock-absorbing spring can also be provided on the fourth linkage rod 434 for better shock absorption.

[0036] like Figure 4 and Figure 11 As shown, the ninth axis I is parallel to the eleventh axis K, and the thirteenth axis M and the fourteenth axis N are collinear and intersect with the ninth axis I and the eleventh axis K, making the stroller fold more smoothly.

[0037] like Figure 3As shown, a backrest 71 is rotatably connected to the support rod 2 around the fifteenth axis O. A sliding sleeve 72 is also connected to the support rod 2, allowing it to slide along the backrest 71. A connecting rod 73 is provided between the sliding sleeve 72 and the backrest 71, allowing them to rotate relative to each other and causing the backrest 71 to move closer to the support rod 2 when the sliding sleeve 72 slides. One end of the connecting rod 73 is rotatably connected to the backrest 71 around the sixteenth axis P, and the other end is rotatably connected to the sliding sleeve 72 around the seventeenth axis Q. A detachable armrest 74 is connected to the backrest 71. The armrest 74 is U-shaped and can form a protective space with the backrest 71, making it safer for young children. The armrest 74 can also be two separate armrests with a gap between them, suitable for older children. The gap between the armrests makes it easier for adults to lift children or place them on the seat 6.

[0038] When the support rod 2 rotates towards the rear leg 12, it drives the sliding sleeve 72 to slide along it. As the sliding sleeve 72 slides, it drives the connecting rod 73 to move. One end of the connecting rod 73 rotates relative to the backrest 71 around the sixteenth axis P, and the other end rotates relative to the sliding sleeve 72 around the seventeenth axis Q. The connecting rod 73 gradually moves closer to the support rod 2. Driven by the connecting rod 73, the backrest 71 rotates relative to the support rod 2 around the fifteenth axis O. The backrest 71 and the seat 6 are designed separately, making the entire stroller occupy less space.

[0039] like Figure 5 and Figure 6 As shown, the first linkage device 3 includes a first linkage shaft 31 that passes laterally through the left rear leg 123, the front leg 11, the support rod 2, and the right rear leg 124. The support rod 2 is provided with a first pressing groove 32 that can push the first linkage shaft 31 to move when the support rod 2 rotates and approaches the rear leg 12. The left rear leg 123 and the right rear leg 124 are both provided with guide grooves 34 that allow the first linkage shaft 31 to slide within them. The front leg 11 is provided with a second pressing groove 33 that is opposite in direction to the first pressing groove 32. The first linkage shaft 31 passes through the first pressing groove 32, the second pressing groove 33, and the guide groove 34. During the process of the support rod 2 rotating and approaching the rear leg 12, the second pressing groove 33 is pressed by the first linkage shaft 31, causing the front leg 11 and the rear leg 12 to rotate and approach each other.

[0040] When the stroller frame of this invention is folded, the locking device is first unlocked, and then the support rod 2 is pushed to rotate and move closer to the rear leg 12. As the support rod 2 rotates towards the rear leg 12, the first pressing groove 32 on the support rod 2 presses against the first linkage shaft 31. After being pressed by the first pressing groove 32, the first linkage shaft 31 slides within the guide groove 34 and presses against the second pressing groove 33 on the front leg 11. Since the second pressing groove 33 is in the opposite direction to the first pressing groove 32, the second pressing groove 33, when pressed by the first pressing groove 32, slides within the guide groove 34 and presses against the second pressing groove 33 on the front leg 11. After the linkage shaft 31 is pressed down, the front leg 11 rotates relative to the rear leg 12 in the opposite direction of the support rod 2. At this time, the front leg 11 and the rear leg 12 rotate relative to each other and move closer together. The folding method is simple and easy to operate. Moreover, it adopts the method of setting grooves on the rear leg 12, the front leg 11 and the support rod 2, and then realizing the linkage of the front leg 11, the rear leg 12 and the support rod 2 through the pressing of the first linkage shaft 31. This reduces the connecting rods of the frame, making the linkage structure of the frame more compact and reducing the size of the frame.

[0041] like Figure 5 and Figure 6 As shown, the first pressing groove 32 is an arc-shaped groove, and the first pressing groove 32 is provided with a first pressing surface 321 capable of pushing the first linkage shaft 31. The second pressing groove 33 is an arc-shaped groove, and the second pressing groove 33 is provided with a second pressing surface 331 capable of being pressed by the first linkage shaft 31. When the support rod 2 rotates relative to the front leg 11, the first pressing surface 321 on the first pressing groove 32 presses the first linkage shaft 31 forward. After being pressed, the first linkage shaft 311 presses the second pressing surface 331 on the second pressing groove 33, causing the front leg 11 and the rear leg 12 to rotate and move closer to each other.

[0042] like Figure 7 and Figure 8As shown, a locking assembly 8 is provided between the seat portion 6 and the support rod 2 to lock the two together. The seat portion 6 is provided with a connecting shaft 61. The locking assembly 8 includes a rotating piece 81 disposed on the support rod 2 and rotatable relative to it. The rotating piece 81 is provided with a slot 811 that allows the connecting shaft 61 to be engaged and forms a locking space 100 with the support rod 100. The support rod 2 is also provided with a locking position 82, which is rotatable relative to it to engage or disengage from the locking position 82. The locking member 83 of the support rod 2 is provided, and when the locking member 83 is engaged in the locking position 82, the connecting shaft 61 is locked in the locking space 100. A torsion spring 84 is provided between the rotating plate 81 and the support rod 2, which can push the rotating plate 81 back to its original position. An elastic member 85 is also provided between the locking member 83 and the support rod 2, which can push the locking member 83 back to its original position. A push rod 9 is also connected inside the support rod 2, which can slide relative to it. The push rod 9 is provided with a push part 86 that can push the locking member 83 out of the locking position 82. A first locking assembly is provided between the support rod 2 and the front leg 11 and the rear leg 12. The first locking assembly is a shaft pin lock that can be pushed to unlock when the push rod 9 slides downward. A second locking assembly is provided between the push rod 9 and the support rod 2. The second locking assembly is a conventional pin lock.

[0043] When the seat 6 of the stroller needs to be folded, the operating lever 9 slides along the support rod 2. The pushing part 86 on the support rod 2 gradually contacts the locking member 83 and pushes the locking member 83 to rotate relative to the support rod 2. The locking member 83 gradually disengages from the locking position 82. As the locking member 83 rotates, it gradually separates from the rotating piece 81. When the locking member 83 separates from the rotating piece 81, the torsion spring 84 drives the rotating piece 81 to rotate. As the rotating piece 81 rotates, the locking space 100 gradually releases, and the latch 811 on the rotating piece 81 gradually faces upward. When the seat 6 is rotated, the connecting shaft 61 on the seat 6 can disengage from the latch 811. When the seat 6 is in the locked state, the torsion spring 84 is in the compressed state, and the elastic member 85 is in the initial state; when the seat 6 is in the unlocked state, the torsion spring 84 is in the initial state, and the elastic member 85 is in the compressed state.

[0044] like Figure 7 and Figure 8 As shown, the rotating piece 81 is provided with a first abutting surface 812, and the locking member 83 is provided with a second abutting surface 831 that can abut against the first abutting surface 811 to prevent the rotating piece 81 from rotating. The cooperation of the first abutting surface 812 and the second abutting surface 831 can prevent the rotating piece 81 from rotating when the locking member 83 is engaged in the locking position 82, making the lock more secure and safer.

Claims

1. A stroller that can be moved from an unfolded state to a folded state after the locking device is unlocked, characterized in that: The system includes a bottom support frame, which includes front legs with front wheels attached. The bottom support frame also includes a rear leg rotatably connected to the front legs about a first axis. A support rod is rotatably connected to the bottom support frame about a second axis. A first linkage device is provided between the support rod and the bottom support frame, which allows the front legs to rotate and move closer to the rear legs when the support rod rotates and folds relative to the bottom support frame about the second axis. The rear legs include left and right mounting portions rotatably connected to the left and right sides of the front legs, respectively, about the first axis. A left rear leg is rotatably connected to the left mounting portion about a third axis, and a right rear leg is rotatably connected to the right mounting portion about a fourth axis. A second linkage component is provided between the bottom support frame and the support rod, which allows the left and right rear legs to move closer together when the support rod rotates and folds relative to the bottom support frame about the second axis. Rear wheels are attached to both the left and right rear legs. A support member is rotatably connected to the bottom support frame about a fifth axis, and the support member has a seat portion that can be rotated and unfolded or folded relative to it. When the seat portion is unfolded, the seat... The other end of the part can be connected to the support rod. The second linkage assembly includes a first linkage rod with one end rotatably connected to the left hind leg about the sixth axis, and a second linkage rod with one end rotatably connected to the right hind leg about the seventh axis. A folding assembly is provided between the support rod, the front leg, the first linkage rod and the second linkage rod, which can drive the first linkage rod and the second linkage rod to move closer to each other when the support rod rotates towards the hind leg. The folding assembly includes a third linkage rod with one end rotatably connected to the front leg about the eighth axis, and a mounting seat connected to the other end of the third linkage rod. The mounting seat is rotatably connected to the third linkage rod about the ninth axis, and a connecting seat is connected to the mounting seat. A fourth linkage rod is provided between the connecting seat and the support rod, which can rotate relative to the two. One end of the fourth linkage rod is rotatably connected to the connecting seat about the eleventh axis, and the other end of the fourth linkage rod is rotatably connected to the support rod about the twelfth axis. The other end of the first linkage rod is rotatably connected to the connecting seat about the thirteenth axis, and the other end of the second linkage rod is rotatably connected to the connecting seat about the fourteenth axis.

2. The stroller according to claim 1, characterized in that: The ninth axis is parallel to the eleventh axis, and the thirteenth and fourteenth axes are collinear and intersect with the ninth and eleventh axes.

3. The stroller according to claim 1, characterized in that: A backrest is rotatably connected to the support rod around the fifteenth axis. A sliding sleeve that can slide along the support rod is also connected to the support rod. A connecting rod is provided between the sliding sleeve and the backrest, which can rotate relative to the two and drive the backrest to move towards the support rod when the sliding sleeve slides. One end of the connecting rod is rotatably connected to the backrest around the sixteenth axis, and the other end of the connecting rod is rotatably connected to the sliding sleeve around the seventeenth axis.

4. The stroller according to claim 1, characterized in that: The first linkage device includes a first linkage shaft that passes laterally through the left hind leg, the front leg, the support rod, and the right hind leg. The support rod is provided with a first pressing groove that can push the first linkage shaft to move when the support rod rotates and approaches the hind leg. The left and right hind legs are each provided with a guide groove that allows the first linkage shaft to slide within it. The front leg is provided with a second pressing groove that is opposite in direction to the first pressing groove. The first linkage shaft passes through the first pressing groove, the second pressing groove, and the guide groove simultaneously. During the process of the support rod rotating and approaching the hind leg, the second pressing groove is pressed by the first linkage shaft, causing the front leg and the hind leg to rotate and approach each other.

5. The stroller according to claim 4, characterized in that: The first pressing groove is an arc-shaped groove, and a first pressing surface is provided on the first pressing groove that can push the first linkage shaft. The second pressing groove is an arc-shaped groove, and a second pressing surface is provided on the second pressing groove that can be pressed by the first linkage shaft.

6. The stroller according to claim 1, characterized in that: A locking assembly is provided between the seat and the support rod to lock the two together. The seat has a connecting shaft. The locking assembly includes a rotating plate on the support rod that can rotate relative to it. The rotating plate has a slot that allows the connecting shaft to be engaged and forms a locking space with the support rod. The support rod also has a locking position and a locking member that can rotate relative to it to engage or disengage from the locking position. When the locking member is engaged in the locking position, the connecting shaft is locked in the locking space. A torsion spring is provided between the rotating plate and the support rod to push the rotating plate back to its original position. An elastic member is provided between the locking member and the support rod to push the locking member back to its original position. A push rod is also connected inside the support rod that can slide relative to it. The push rod has a pushing part that can push the locking member out of the locking position.

7. The stroller according to claim 6, characterized in that: The rotating piece is provided with a first abutting surface, and the locking member is provided with a second abutting surface that can abut against the first abutting surface to prevent the rotating piece from rotating.

Images