A stroller

Abstract

The present application discloses a baby stroller, the front leg is connected with the rear leg capable of rotating relative to the front leg, the rear leg is rotationally connected with the connecting seat, the connecting seat is connected with the support rod assembly, the linkage is arranged between the front leg and the support rod assembly, and the linkage can make the front leg and the rear leg rotate and close to each other when the linkage rotates relative to the front leg; the support rod assembly is connected with the sliding seat, the sliding seat is connected with the support rod, the support rod, the front leg and the rear leg are provided with the sitting bag, the first locking assembly comprises the first locking position arranged on the rear support rod, the first locking piece capable of being clamped into or separated from the first locking position is connected with the sliding seat, the first operating piece capable of rotating relative to the sliding seat is connected with the sliding seat, the first operating piece is provided with the pushing protrusion capable of abutting against the first locking piece to make the first locking piece remain locked when the first operating piece moves from the unlocking position to the locking position, and the first elastic element is arranged between the first locking piece and the sliding seat. The present application has simple structure and small volume after folding.

Description

Technical Field

[0001] This invention relates to an infant stroller. Background Technology

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

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a baby 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 baby stroller, capable of moving from an unfolded position to a folded position after unlocking a locking device, includes front legs 11, with front wheels 111 connected to the lower ends of the front legs 11. A rear leg 12, rotatable relative to the front leg 11 about a first axis A, is connected to the front leg 11, with a rear wheel 121 connected to the rear leg 12. A connecting seat 13, rotatable about a second axis B, is connected to the rear leg 12. A support rod assembly 14 is also connected to the connecting seat 13. A spacer is provided between the front leg 11 and the support rod assembly 14. A linkage 15 is rotatable relative to the front leg 11. One end of the linkage 15 is rotatably connected to the front leg 11 about a third axis C, and the other end is rotatably connected to the support rod assembly 14 about a fourth axis D. When the linkage 15 rotates relative to the front leg 11 about the third axis C, it allows the front leg 11 and the rear leg 12 to rotate and move closer to each other. A sliding seat 16 is connected to the support rod assembly 14, and a support rod 17 is connected to the sliding seat 16. The support rod 17, the front leg 11, and the rear leg 12 are connected to each other. A seat 2 is provided between the legs 12, which can unfold when the stroller is unfolded. The support rod assembly 14 includes a front support rod 141 connected to the connecting seat 13 and a rear support rod 143 located behind the front support rod 141. The locking device includes a first locking assembly 41 provided between the sliding seat 16 and the rear support rod 143. The first locking assembly 41 includes a first locking position 411 provided on the rear support rod 143. A first locking member 412 is connected to the sliding seat 16 and can slide relative to it to engage or disengage from the first locking position 411. A first operating member 413 is connected to the sliding seat 16 and can rotate relative to it to move between the locked position and the unlocked position. The first operating member 413 is provided with a push protrusion 4131 that can abut against the first locking member 412 to keep the first locking member 412 locked when it moves from the unlocked position to the locked position. A first elastic member 414 is provided between the first locking member 412 and the sliding seat 16 to push the first locking member 412 back to its original position.

[0006] The front legs 11 and rear legs 12 are arranged in an X-shape when the stroller is unfolded.

[0007] The strut assembly 14 includes a front strut 141 connected to the connecting seat 13. The front strut 141 is also provided with a mounting seat 142. One end of the linkage 15 is rotatably connected to the mounting seat 142 around the fourth axis D, and the other end of the linkage 15 is rotatably connected to the front leg 11 around the third axis C.

[0008] A torsion spring 3 is also provided between the mounting base 142 and the linkage component 15.

[0009] The strut assembly 14 also includes a rear strut 143 disposed on the connecting seat 13 and located behind the front strut 141, and a push rod 144 that can slide relative to the rear strut 143 is connected inside the rear strut 143.

[0010] The rear leg 12 includes a rear leg frame 122 rotatably connected to the front leg 11 about a first axis A. The lower end of the rear leg frame 122 is rotatably connected to the connecting seat 13 about a second axis B. The rear wheel 121 is connected to the lower end of the rear leg frame 122. The rear leg 12 is also provided with a transversely connected cross brace 123. The middle part of the cross brace 123 is provided with a clearance part 1231 that can make way for the push rod 144 when the stroller is folded.

[0011] Two locking components 5 are provided between the sliding seat 16 and the front support rod 141. The two locking components 5 include a locking position 51 on the front support rod 141. A rotating member 52 that can rotate relative to the sliding seat 16 is connected inside the sliding seat 16. The front end of the rotating member 52 is provided with a hook part 521 that can engage with the locking position 51. The rear end of the rotating member 52 is provided with a push part 522. The push rod 144 is provided with an unlocking part 1441 that can push the push part 522 to disengage the hook part 521 from the locking position 51 when it slides and folds relative to the rear support rod 143. An elastic reset member 53 that can push the rotating member 52 back to its original position is provided between the rotating member 52 and the sliding seat 16.

[0012] A second locking assembly 42 is provided between the push rod 144 and the rear support rod 143 to lock the two together. The second locking assembly 42 includes a second locking position 421 on the rear support rod 143. A second locking member 422 is connected inside the push rod 144 and can slide relative to it to engage or disengage from the second locking position 421. The push rod 144 also has a sliding block 423 that can drive the second locking member 422 to slide and disengage from the second locking position 421 when it is pulled. A second operating member is provided on the push rod 144 that can rotate relative to it. 424. A cable 425 is provided between the second operating member 424 and the sliding block 423, which can drive the sliding block 423 to slide when the second operating member 424 rotates. A second elastic member 426 is provided between the second operating member 424 and the push rod 144, which can push the second operating member 424 to reset. A third elastic member 428 is provided between the sliding block 423 and the push rod 144, which can push the sliding block 423 to reset. A fourth elastic member 427 is provided between the second locking member 422 and the push rod 144, which can push the second locking member 422 to reset.

[0013] A third locking component 43 is provided between the linkage 15 and the support rod assembly 14 to lock the two together. The third locking component 43 includes a latch 431 on the front leg 11. The linkage 15 is provided with a sliding member 432 that can slide relative to it. The sliding member 432 is provided with a third locking position 4321 that can engage or disengage with the latch 431 when it slides relative to the linkage 15. The front support rod 141 is provided with a first sliding unlocking member 433 that can slide relative to it and push the sliding member 432. The front support rod 141 also contains... A sliding connector 434 is connected to the connecting seat 13, which is able to slide relative to it and push the sliding connector 434 to slide. The push rod 144 is provided with a pushing slope 436 that can push the second sliding unlocking member 435. A first elastic element 437 that can push the sliding member 432 to reset is provided between the sliding member 432 and the linkage member 15. A second elastic element 438 that can push the sliding connector 434 to reset is provided between the sliding connector 434 and the front support rod 141.

[0014] The front leg 11 includes a front leg frame 112, a connecting part 113 is connected to the front leg frame 112, a front wheel frame 114 is connected to the lower end of the front leg frame 112, the front wheel 111 can rotate 360° relative to the front wheel frame 114 on the horizontal plane, a rotating seat 115 is connected to the upper end of the front leg frame 112, and the front end of the linkage 15 is rotatably connected to the rotating seat 115 around the third axis C.

[0015] Compared with the prior art, the present invention has the following advantages: When the infant stroller of the present invention needs to be folded, the first locking component is first unlocked, and the first operating component is rotated upward. At this time, the push protrusion on the first operating component gradually separates from the first locking component. When the push protrusion separates from the first locking component, the first elastic element pushes the first locking component to slide backward relative to the sliding seat. The first locking component gradually disengages from the first locking position. At this time, the sliding seat can slide downward along the support rod assembly. The sliding seat moves downward with the support rod, and the seat can be folded. Then, the linkage and the connection between the front leg rotate. At this time, the front end of the linkage rotates relative to the front leg around the third axis C, and the rear end of the linkage rotates relative to the support rod assembly around the fourth axis D. The linkage and the front leg move closer to each other. Under the drive of the linkage, the lower end of the rear leg rotates relative to the connecting seat around the second axis B. At the same time, the rear leg also rotates relative to the front leg around the first axis A. At this time, the rear leg moves closer to the front leg. The folding structure is simple and the folding operation is convenient. Attached Figure Description

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

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

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

[0019] Figure 4 This is a perspective view of the baby stroller of the present invention when folded;

[0020] Figure 5 This is a side view of the baby stroller of the present invention when folded;

[0021] Figure 6 This is a cross-sectional view of the baby stroller of the present invention;

[0022] Figure 7 yes Figure 6 Enlarged view of region E in the middle;

[0023] Figure 8 yes Figure 6 Enlarged view of region F in the middle;

[0024] Figure 9 This is an exploded view of the baby stroller of the present invention;

[0025] Figure 10 This is a perspective view of the sliding component in the baby stroller of the present invention;

[0026] Figure 11 This is an exploded view of the second locking component and the sliding block in the infant stroller of the present invention;

[0027] Figure 12 This is an exploded view of the sliding connector and the sliding connector in the baby stroller of the present invention. Detailed Implementation

[0028] The present invention will now be further described with reference to the accompanying drawings:

[0029] like Figures 1 to 12As shown, the present invention provides an infant stroller that can be moved from an unfolded position to a folded position after the locking device is unlocked. It includes front legs 11, with front wheels 111 connected to the lower end of each front leg 11. A rear leg 12, rotatable relative to the front leg 11 about a first axis A, is connected to the front leg 11. A rear wheel 121 is connected to the rear leg 12. A connecting seat 13 is rotatably connected to the rear leg 12 about a second axis B. A support rod assembly 14 is also connected to the connecting seat 13. A linkage 15, rotatable relative to the front leg 11 and the support rod assembly 14, is provided between the front leg 11 and the support rod assembly 14. One end of the linkage 15 is rotatably connected to the front leg 11 about a third axis C, and the other end is rotatably connected to the support rod assembly 14 about a fourth axis D. When the linkage 15 rotates relative to the front leg 11 about the third axis C, it allows the front leg 11 and the rear leg 12 to rotate and move closer together. A sliding seat 16, slidable relative to the support rod assembly 14, is connected to the sliding seat 16. A support rod 17 is connected to the sliding seat 16. A seat 2 is provided between the front legs 11 and the rear legs 12, which unfolds when the stroller is unfolded. The support rod assembly 14 includes a front support rod 141 connected to the connecting seat 13 and a rear support rod 143 located behind the front support rod 141. A first locking assembly 41 is provided between the sliding seat 16 and the rear support rod 143. The first locking assembly 41 includes a first locking position 411 provided on the rear support rod 143. The sliding seat 16 is connected to a locking device that can slide relative to it and engage or disengage from the first locking device. The first locking member 412 of the positioning 411 is connected to the sliding seat 16, and a first operating member 413 is connected to it, which can rotate relative to it and move between the locked and unlocked positions. The first operating member 413 is provided with a push protrusion 4131 that can abut against the first locking member 412 to keep the first locking member 412 locked when it moves from the unlocked position to the locked position. A first elastic member 414 is provided between the first locking member 412 and the sliding seat 16 to push the first locking member 412 back to its original position. The seat 2 is convenient for infants and toddlers to sit in. When the stroller is unfolded or folded, the seat 2 can unfold with the stroller and fold with the stroller, so that the stroller occupies a small volume when folded.

[0030] When the stroller of this invention needs to be folded, firstly, the first locking component 41 is unlocked, and the first operating member 413 is rotated upwards. At this time, the pushing protrusion 4131 on the first operating member 413 gradually separates from the first locking member 412. When the pushing protrusion 4131 separates from the first locking member 412, the first elastic member 414 pushes the first locking member 412 to slide backwards relative to the sliding seat 16. The first locking member 412 gradually disengages from the first locking position 411. At this time, the sliding seat 16 can slide downwards along the support rod assembly 14. The support rod moves downwards, allowing the seat to fold. Then, the connection between the linkage and the front leg rotates. At this point, the front end of the linkage rotates relative to the front leg around the third axis C, and the rear end of the linkage 15 rotates relative to the support rod assembly 14 around the fourth axis D. The linkage 15 and the front leg 11 move closer together. Driven by the linkage 15, the lower end of the rear leg 12 rotates relative to the connecting seat 13 around the second axis B. Simultaneously, the rear leg 12 also rotates relative to the front leg 11 around the first axis A. At this point, the rear leg 11 moves closer to the front leg 11. The folding structure is simple and the folding operation is convenient. The front leg 11 and rear leg 12 are arranged in an X-shape when the stroller is unfolded, providing more stable and safer support.

[0031] The front support rod 141 is also provided with a mounting base 142. One end of the linkage 15 is rotatably connected to the mounting base 142 around the fourth axis D, and the other end of the linkage 15 is rotatably connected to the front leg 11 around the third axis C. When the connection between the linkage 15 and the front leg 11 rotates relative to each other, the front end of the linkage 15 rotates relative to the front leg 11 around the third axis C, and the rear end of the linkage 15 rotates relative to the mounting base 142 around the fourth axis D. The linkage 15 and the front leg 11 move closer to each other, and at the same time, the linkage 15 and the front support rod 141 also gradually move closer to each other, so that the volume occupied by this infant stroller when folded is minimized.

[0032] The mounting base 142 is provided with a first support surface 1421, and the linkage 15 is provided with a second support surface 151 that can abut against the first support surface 1421 when the stroller is unfolded. When the stroller is unfolded, the second support surface 151 on the linkage 15 and the first support surface 1421 on the mounting base 142 abut against each other, making the stroller more stable and safer when unfolded.

[0033] The rear support rod 143 is mounted on the connecting seat 13 and located behind the front support rod 141. A push rod 144 that can slide relative to the rear support rod 143 is connected inside the rear support rod 143. A fixing seat 145 is also provided between the front support rod 141 and the rear support rod 143 to connect their tops and fix them, making the connection between the front support rod 141 and the rear support rod 143 more stable and preventing them from shaking relative to the connecting seat 13.

[0034] The front leg 11 includes a front leg frame 112, a connecting part 113 connected to the front leg frame 112, and a front wheel frame 114 connected to the lower end of the front leg frame 112. The front wheel 111 can rotate 360° relative to the front wheel frame 114 on a horizontal plane. A rotating seat 115 is connected to the upper end of the front leg frame 112, and the front end of the linkage 15 is rotatably connected to the rotating seat 115 around a third axis C. When folded, the front wheel 111 can rotate 90° from a forward-facing position to a position parallel to and close to the rear leg 12.

[0035] The rear leg 12 includes a rear leg frame 122 rotatably connected to the front leg 11 about a first axis A. The lower end of the rear leg frame 122 is rotatably connected to the connecting seat 13 about a second axis B. The rear wheel 121 is connected to the lower end of the rear leg frame 122. The rear leg 12 is also provided with a transversely connected cross brace 123. The middle part of the cross brace 123 is provided with a clearance part 1231 that can make way for the push rod 144 when the stroller is folded. When the rear leg frame 122 rotates relative to the front leg 11 and the connecting seat 13 and approaches the support rod assembly 14, in order to prevent the push rod 144 from hitting the cross brace 123 when it slides down and folds, the clearance part 1231 is provided on the cross brace 123. The clearance part 1231 is an arc-shaped groove that can make way for the push rod 144 and prevent the push rod 144 from getting stuck.

[0036] A torsion spring 3 is also provided between the mounting base 142 and the linkage 15. The torsion spring 3 can apply elastic force when the linkage 15 rotates and folds relative to the mounting base 142, so that the linkage 15 rotates and folds relative to the mounting base 142 more smoothly.

[0037] A second locking assembly 5 is provided between the sliding seat 16 and the front support rod 141. The second locking assembly 5 includes a locking position 51 on the front support rod 141. A rotating member 52, capable of rotating relative to the sliding seat 16, is connected inside. The front end of the rotating member 52 has a hook portion 521 that engages with the locking position 51, and the rear end of the rotating member 52 has a push-abutment portion 522. The push rod 144 has an unlocking portion 1441 that, when sliding and folding relative to the rear support rod 143, pushes against the push-abutment portion 522, causing the hook portion 521 to disengage from the locking position 51. An elastic reset member 53, a torsion spring, is provided between the rotating member 52 and the sliding seat 16 to push the rotating member 52 back to its original position. The second locking assembly 5 provides a more secure lock between the sliding seat 16 and the rear support rod 143. When it is necessary to fold the sliding seat 16, support rod 17 and seat pocket 2, first unlock the first locking component 41, and then push the push rod 144 to slide downward relative to the rear support rod 143. During the downward sliding process of the push rod 144, the unlocking part 1441 on it gradually contacts the top part 522 on the rotating part 52. When the top part 522 is pushed, the top part 522 drives the entire rotating part 52 to rotate. When the rotating part 52 rotates, it drives the hook part 521 at its front end to rotate. At this time, the hook part 521 disengages from the locking position 51 on the front support rod 141 and fully enters the sliding seat 16. The sliding seat 16 can then slide downward relative to the rear support rod 143 and fold.

[0038] A second locking assembly 42 is provided between the push rod 144 and the rear support rod 143 to lock the two together. The second locking assembly 42 includes a second locking position 421 on the rear support rod 143. A second locking member 422 is connected inside the push rod 144 and can slide relative to it to engage or disengage from the second locking position 421. The push rod 144 also has a sliding block 423 that can drive the second locking member 422 to slide and disengage from the second locking position 421 when it is pulled. A second operating member is provided on the push rod 144 that can rotate relative to it. 424. A cable 425 is provided between the second operating member 424 and the sliding block 423, which can drive the sliding block 423 to slide when the second operating member 424 rotates. A second elastic member 426 is provided between the second operating member 424 and the push rod 144, which can push the second operating member 424 to reset. A third elastic member 428 is provided between the sliding block 423 and the push rod 144, which can push the sliding block 423 to reset. A fourth elastic member 427 is provided between the second locking member 422 and the push rod 144, which can push the second locking member 422 to reset.

[0039] When the push rod 144 needs to slide and fold relative to the rear support rod 143, press the lower end of the second operating member 424. The upper end of the second operating member 424 will drive the cable 425 to move upward. When the cable 425 moves upward, it will drive the sliding block 423 to move upward. When the sliding block 423 moves, it will drive the second locking member 422 to slide relative to the push rod 144 and disengage from the second locking position 421. At this time, the push rod 144 can slide and fold downward relative to the rear support rod 143.

[0040] The second locking member 422 is provided with a first inclined sliding surface 4221, and the sliding block 423 is provided with a second inclined sliding surface 4231 that can push against the first inclined sliding surface 4221 when it slides vertically relative to the push rod 144, thereby causing the second locking member 422 to slide laterally relative to the push rod 144. The cooperation of the second inclined sliding surface 4231 and the first inclined sliding surface 4221 allows the second locking member 422 to slide laterally relative to the push rod 144 and disengage from the second locking position 421 when the sliding block 423 slides vertically relative to the push rod 144.

[0041] A third locking component 43 is provided between the linkage 15 and the support rod assembly 14 to lock the two together. The third locking component 43 includes a latch 431 on the front leg 11. The linkage 15 is provided with a sliding member 432 that can slide relative to it. The sliding member 432 is provided with a third locking position 4321 that can engage or disengage with the latch 431 when it slides relative to the linkage 15. The front support rod 141 is provided with a first sliding unlocking member 433 that can slide relative to it and push the sliding member 432. The front support rod 141 also contains... A sliding connector 434 is connected to the connecting seat 13, which is able to slide relative to it. A second sliding unlocking member 435 is connected within the connecting seat 13, which can slide relative to it and push the sliding connector 434 to slide. The push rod 144 is provided with a pushing slope 436 that can push the second sliding unlocking member 435. A first elastic element 437 that can push the sliding member 432 back to its original position is provided between the sliding member 432 and the linkage member 15. A second elastic element 438 that can push the sliding connector 434 back to its original position is provided between the sliding connector 434 and the front support rod 141. The third locking position 4321 is a slot. Part of the second sliding unlocking member 435 is located inside the rear support rod 143 and can be pushed by the pushing slope 436. Part of the second sliding unlocking member 435 is also located inside the front support rod 141 for pushing the sliding connector 434. When it is necessary to fold the linkage 15, front leg 11 and rear leg 12, the third locking component 43 needs to be unlocked first. Push the push rod 144 to slide downward relative to the rear support rod 143. When the push rod 144 slides downward, its pushing slope 436 first contacts the second sliding unlocking component 435 and gradually pushes against the second sliding unlocking component 435 to slide laterally relative to the connecting seat 12. The front end of the second sliding unlocking component 435 pushes the sliding connecting component 434 to slide downward relative to the front support rod 141. When the sliding connecting component 434 slides downward, it drives the first sliding unlocking component 433 to slide downward. The slope on the first sliding unlocking component 433 pushes against the slope on the sliding component 432. At this time, the sliding component 432 slides laterally relative to the linkage 15. When the sliding component 432 slides, its third locking position 4321 separates from the latch 431. At this time, the front leg 11 can rotate and fold with the linkage 15.

[0042] The sliding connector 434 is provided with a third inclined sliding surface 4341, and the second sliding unlocking member 435 is provided with a fourth inclined sliding surface 4351 that can push against the third inclined sliding surface 4341 and drive the sliding connector 434 to slide when it slides.

[0043] The cooperation between the third inclined sliding surface 4341 and the fourth inclined sliding surface 4351 allows the sliding connecting piece 434 to slide vertically relative to the front support rod 141 when the second sliding unlocking piece 435 slides laterally relative to the connecting seat 12, the front support rod 141 and the rear support rod 143.

[0044] The sliding member 432 is provided with multiple strip-shaped holes 4322, and the linkage member 15 is provided with a pivot pin 152 that passes through the strip-shaped holes 15 laterally. The strip-shaped holes 4322 and the pivot pin 152 cooperate to guide the sliding block 423 to slide, while the size of the strip-shaped holes 4322 also limits the sliding range of the sliding member 432.

Claims

1. A stroller capable of moving from an unfolded position to a folded position after unlocking a locking device, characterized in that: Includes a front leg (11), the lower end of which is connected to a front wheel (111). A rear leg (12) is connected to the front leg (11) and is rotatable relative to it about a first axis (A). A rear wheel (121) is connected to the rear leg (12). A connecting seat (13) is rotatably connected to the rear leg (12) about a second axis (B). A strut assembly (14) is also connected to the connecting seat (13). A linkage (15) is provided between the front leg (11) and the strut assembly (14) and is rotatable relative to both. 15) One end is rotatably connected to the front leg (11) about the third axis (C), and the other end is rotatably connected to the support rod assembly (14) about the fourth axis (D). When the linkage (15) rotates relative to the front leg (11) about the third axis (C), it can cause the front leg (11) and the rear leg (12) to rotate and move closer to each other. The support rod assembly (14) is connected to a sliding seat (16) that can slide relative to it. The sliding seat (16) is connected to a support rod (17). The support rod (17), the front leg (11) and the rear leg (12) are provided with a space between them. The stroller has a seat (2) that unfolds when the stroller is unfolded. The support rod assembly (14) includes a front support rod (141) connected to the connecting seat (13) and a rear support rod (143) located behind the front support rod (141). The locking device includes a first locking assembly (41) located between the sliding seat (16) and the rear support rod (143). The first locking assembly (41) includes a first locking position (411) located on the rear support rod (143). The sliding seat (16) is connected to a locking position that can slide relative to it and engage or disengage from the first locking position. The first locking member (412) of the sliding seat (16) is connected to a first operating member (413) that can rotate relative to it and move between the locked position and the unlocked position. The first operating member (413) is provided with a push protrusion (4131) that can abut against the first locking member (412) when it moves from the unlocked position to the locked position, so that the first locking member (412) remains locked. A first elastic member (414) that can push the first locking member (412) to reset is provided between the first locking member (412) and the sliding seat (16).

2. The stroller of claim 1, wherein: The front legs (11) and rear legs (12) are arranged in an X-shape when the stroller is unfolded.

3. The infant stroller according to claim 1 or 2, characterized in that: The front support rod (141) is also provided with a mounting base (142). One end of the linkage (15) is rotatably connected to the mounting base (142) around the fourth axis (D), and the other end of the linkage (15) is rotatably connected to the front leg (11) around the third axis (C).

4. The infant stroller according to claim 3, characterized in that: A torsion spring (3) is also provided between the mounting base (142) and the linkage (15).

5. The infant stroller according to claim 4, characterized in that: The rear support rod (143) is located on the connecting seat (13) and behind the front support rod (141). A push rod (144) that can slide relative to the rear support rod (143) is connected inside the rear support rod (143).

6. The infant stroller according to claim 5, characterized in that: The rear leg (12) includes a rear leg frame (122) rotatably connected to the front leg (11) about a first axis (A). The lower end of the rear leg frame (122) is rotatably connected to the connecting seat (13) about a second axis (B). The rear wheel (121) is connected to the lower end of the rear leg frame (122). The rear leg (12) is also provided with a transverse support rod (123) that is laterally connected. The middle part of the transverse support rod (123) is provided with a clearance part (1231) that can make way for the push rod (144) when the stroller is folded.

7. The infant stroller according to claim 5, characterized in that: Two locking components (5) are provided between the sliding seat (16) and the front support rod (141). The two locking components (5) include a locking position (51) on the front support rod (141). A rotating component (52) that can rotate relative to the sliding seat (16) is connected inside. The front end of the rotating component (52) is provided with a hook part (521) that can engage with the locking position (51). The rear end of the rotating component (52) is provided with a backing part (522). The push rod (144) is provided with an unlocking part (1441) that can push the backing part (522) to disengage the hook part (521) from the locking position (51) when it slides and folds relative to the rear support rod (143). An elastic reset component (53) that can push the rotating component (52) back to its original position is provided between the rotating component (52) and the sliding seat (16).

8. The infant stroller according to claim 5, characterized in that: A second locking assembly (42) is provided between the push rod (144) and the rear support rod (143) to lock the two together. The second locking assembly (42) includes a second locking position (421) on the rear support rod (143). A second locking member (422) is connected inside the push rod (144) and can slide relative to it to engage or disengage from the second locking position (421). The push rod (144) is also provided with a sliding block (423) that can drive the second locking member (422) to slide and disengage from the second locking position (421) when pulled. A second operating member (424) is provided on the push rod (144) and can rotate relative to it. The second operating member (424) and the sliding block (423) are provided with a cable (425) that can drive the sliding block (423) to slide when the second operating member (424) rotates. The second operating member (424) and the push rod (144) are provided with a second elastic member (426) that can push the second operating member (424) to reset. The sliding block (423) and the push rod (144) are provided with a third elastic member (428) that can push the sliding block (423) to reset. The second locking member (422) and the push rod (144) are provided with a fourth elastic member (427) that can push the second locking member (422) to reset.

9. The infant stroller according to claim 5, characterized in that: A third locking component (43) is provided between the linkage (15) and the support rod assembly (14) to lock the two together. The third locking component (43) includes a latch (431) on the front leg (11). The linkage (15) is provided with a sliding member (432) that can slide relative to it. The sliding member (432) is provided with a third locking position (4321) that can engage or disengage with the latch (431) when it slides relative to the linkage (15). The front support rod (141) is provided with a first sliding unlocking member (433) that can slide relative to it and push the sliding member (432). The front support rod (141) is provided with a first sliding unlocking member (433) that can slide relative to it and push the sliding member (432). It is also connected to a sliding connector (434) that can slide relative to it. The connecting seat (13) is connected to a second sliding unlocking member (435) that can slide relative to it and push the sliding connector (434) to slide. The push rod (144) is provided with a pushing slope (436) that can push the second sliding unlocking member (435). A first elastic element (437) that can push the sliding member (432) to reset is provided between the sliding member (432) and the linkage member (15). A second elastic element (438) that can push the sliding connector (434) to reset is provided between the sliding connector (434) and the front support rod (141).

10. The infant stroller according to claim 1, characterized in that: The front leg (11) includes a front leg frame (112), a connecting part (113) is connected to the front leg frame (112), a front wheel frame (114) is connected to the lower end of the front leg frame (112), the front wheel (111) can rotate 360° relative to the front wheel frame (114) on the horizontal plane, a rotating seat (115) is connected to the upper end of the front leg frame (112), and the front end of the linkage (15) is rotatably connected to the rotating seat (115) around the third axis (C).

Images