CN101032976A - Push cart for children - Google Patents

Abstract

A stroller for children, comprising a stroller frame, a front wheel assembly, a rear wheel assembly, the stroller frame includes side brackets located on both sides, a front wheel bracket located between the side brackets, the side brackets include rear wheel brackets, Push down the lever, the rear end of the front wheel bracket is connected with the connecting seat, the lower end of the push down lever is connected with the connecting seat in rotation, the front wheel bracket is slidably provided with a sliding sleeve, the upper end of the rear wheel bracket is connected to the sliding The sleeve is rotatably connected, and the side bracket also includes an upper link and a lower link. The upper end is rotatably connected with the connecting seat, and the lower end of the lower link is rotatably connected with the rear wheel bracket. When folding, slide the sliding sleeve forward, and the sliding sleeve drives the rear wheel bracket. Under the action of the upper link and the lower link, push down the handle bar and the rear wheel bracket to fold and fold relative to the front wheel bracket. The structure is simple and can be Folds down to a smaller volume for easy folding.

Description

stroller

Technical field

The invention relates to a stroller for children.

Background technique

The children's stroller in the prior art includes a stroller frame, a front wheel assembly, and a rear wheel assembly. The stroller frame includes a front wheel bracket and side brackets located on both sides of the front wheel bracket, each side The side bracket includes a rear wheel bracket and a push-down handle bar. The front wheel assembly is set on the front wheel bracket, and the rear wheel assembly is set on the rear wheel bracket. In order to facilitate transportation, the whole The frame of the car is designed to be foldable to a smaller volume, so the front wheel bracket, the rear wheel bracket and the push-down handle are usually set to be foldable, and the side brackets on both sides are designed to be relatively foldable . In order to facilitate the user's folding operation, it is usually necessary to set a driving mechanism on the cart frame, so that when the user folds the front wheel bracket, the rear wheel bracket and the push-down lever, the driving mechanism can simultaneously make the two sides The side brackets are relatively folded, and the driving mechanism makes the structure of the cart frame more complicated. WO2004/097282 also discloses a cart frame, the wheels of which are at the front after being folded, which makes folding inconvenient.

Contents of Invention

The object of the present invention is to provide a child stroller, which has a small volume after being folded, and the structure of the stroller frame is simple, and the folding is convenient.

The technical solution of the present invention is: a stroller for children, including a stroller frame, a front wheel assembly, and a rear wheel assembly, the stroller frame includes side brackets located at both sides of the stroller frame, The front wheel bracket is located between the side brackets on both sides. The side bracket includes a rear wheel bracket and a push-down handle bar. The front wheel assembly is arranged at the front end of the front wheel bracket. The rear wheel assembly is arranged on the lower end of the rear wheel bracket, the rear end of the front wheel bracket is connected with a connecting seat, and the lower end of the push-down lever rotates with the connecting seat connected to the ground, the front wheel bracket is slidably provided with a sliding sleeve along its front and rear direction, the upper end of the rear wheel bracket is connected to the sliding sleeve in a rotational manner, and the side bracket also includes an upper connection Rod, lower link, the rear end of the upper link is rotatably connected with the push-down lever, the front end of the upper link is rotatably connected with the sliding sleeve, and the The upper end of the lower link is rotatably connected to the connecting seat, and the lower end of the lower link is rotatably connected to the rear wheel bracket.

The front wheel bracket is single and its rear part is fixedly connected with the connecting seat and forms a whole.

There are two front wheel brackets, and the rear parts of the two front wheel brackets are respectively connected to the connecting seat in a rotational manner, and the two front wheel brackets are connected to the sliding sleeve respectively. The two side parts are provided so as to be slidable.

The two sides of the sliding sleeve are respectively provided with through holes, and the front wheel brackets on each side are slidably inserted into the corresponding through holes.

There is a limiting surface in the through hole on each side, and when the cart frame is in an unfolded state, the front wheel brackets on each side respectively abut against the corresponding limiting surface.

The upper link on each side is rotatably connected with a seat post connecting piece, the seat post connecting piece is slidably connected with a seat post, and the rear end of the seat post is connected to the connecting seat connected, the seat bar is provided with a seat.

The rear end of the seat post is rotatably connected to the connecting seat.

A push-up handle is movable on the push-down handle. When the cart frame is unfolded, the push-up handle and the push-down handle are locked relative to each other.

A foldable back support is arranged between the push-down handles on both sides, and the two outer ends of the back support are respectively rotatably connected to the push-down handles on the corresponding sides.

The connecting base has a first anti-rotation piece, and when the cart frame is unfolded, the lower link abuts against the first anti-rotation piece.

There is a second anti-rotation piece on the connecting seat, and when the cart frame is unfolded, the push-down lever abuts against the second anti-rotation piece.

The connecting seat has a first connecting portion extending laterally to both sides respectively, and the lower ends of the push-down levers on each side are rotatably connected to the first connecting portions on the corresponding side respectively, and the lower connecting rods on each side The upper end portions are also rotatably connected to the first connecting portions on the corresponding sides, respectively.

The sliding sleeve has a second connecting portion extending laterally to both sides respectively, the front end of the upper link on each side is connected to the second connecting portion on the corresponding side in a rotational manner, and the upper end of the rear wheel bracket on each side The parts are also rotatably connected with the second connecting part on the corresponding side.

Compared with the prior art, the present invention has the following advantages: when folding, only the sliding sleeve needs to be slid forward along the front wheel bracket, and the sliding sleeve drives the rear wheel bracket, and the upper connection Under the action of the rod and the lower link, the push-down lever and the rear wheel bracket can be folded relative to the front wheel bracket. The structure is simple and can be folded to a smaller volume. After folding, The front wheel assembly is on the front side, and the rear wheel assembly is on the rear side, so the front wheel and the rear wheel can form support for the car body, and the folding is convenient.

Description of drawings

Accompanying drawing 1 is the expanded perspective view (first embodiment) of the present invention;

Accompanying drawing 2 is a half-fold perspective view (first embodiment) of the present invention;

Accompanying drawing 3 is a half-fold schematic diagram (first embodiment) of the present invention;

Accompanying drawing 4 is the K direction view figure of accompanying drawing 3;

Accompanying drawing 5 is the folding schematic diagram (first embodiment) of the present invention;

Accompanying drawing 6 is the expanded perspective view (second embodiment) of the present invention;

Accompanying drawing 7 is the schematic diagram (the second embodiment) of the front wheel bracket and the sliding sleeve in the unfolded position and the folded position.

Among them: 1. Cart frame; 2. Front wheel assembly; 3. Rear wheel assembly; 4. Front wheel support; 5. Rear wheel support; 6. Push down lever; 7. Push up lever; 8. Slide 10. Upper link; 11. Lower link; 12. Back support; 13. Seat bar; 16. Seat bar connector; 18. Side support; 19. First anti-rotation member; 20. Second anti-rotation 23, the first connecting portion; 24, the second connecting portion; 25, the connecting seat; 27, the through hole; 28, the limiting surface.

Detailed ways

As shown in the accompanying drawings, a children's stroller includes a stroller frame 1, a front wheel assembly 2, and a rear wheel assembly 3. The stroller frame 1 includes The side bracket 18 at the top, the front wheel bracket 4 between the side brackets 18 on both sides, the side bracket 18 includes a rear wheel bracket 5, and a push-down lever 6, and the front wheel assembly 2 is set At the front end of the front wheel bracket 4, the rear wheel assembly 3 is arranged on the lower end of the rear wheel bracket 5, and the rear end of the front wheel bracket 4 is connected with a connecting seat 25, so that The lower end of the push-down lever 6 is rotatably connected to the connecting seat 25, the front wheel bracket 4 is provided with a sliding sleeve 8 slidingly along its front and rear direction, and the rear wheel bracket 5 is The upper end is rotatably connected with the sliding sleeve 8, and the side bracket 18 also includes an upper link 10 and a lower link 11, and the rear end of the upper link 10 is connected to the push-down handle The rod 6 is rotatably connected, the front end of the upper link 10 is rotatably connected with the sliding sleeve 8, and the upper end of the lower link 11 is rotatably connected with the connecting seat 25 , the lower end of the lower link 11 is rotatably connected with the rear wheel bracket 5 .

Embodiment 1: As shown in accompanying drawings 1 to 4, a children's stroller includes a stroller frame 1, a front wheel assembly 2, and a rear wheel assembly 3. The stroller frame 1 includes a The side brackets 18 on both sides of the trolley frame 1, the front wheel bracket 4 between the side brackets 18 on both sides, the side bracket 18 includes a rear wheel bracket 5, a push-down handle bar 6, The front wheel assembly 2 is arranged at the front end of the front wheel bracket 4 , and the rear wheel assembly 3 is arranged at the lower end of the rear wheel bracket 5 . The rear end of the front wheel bracket 4 is connected with a connection base 25, the front wheel bracket 4 is single and its rear part is fixedly connected with the connection base 25 and forms a whole. The lower end of the push-down lever 6 is rotatably connected to the connecting seat 25, the front wheel bracket 4 is provided with a sliding sleeve 8 slidingly along its front and rear direction, and the rear wheel bracket 5 is The upper end of the upper link 10 is rotatably connected with the sliding sleeve 8, and the side bracket 18 also includes an upper link 10 and a lower link 11, and the rear end of the upper link 10 is connected with the push-down The rod 6 is rotatably connected, the front end of the upper link 10 is rotatably connected with the sliding sleeve 8, and the upper end of the lower link 11 is rotatably connected with the connecting seat 25 Connected, the lower end of the lower link 11 is rotatably connected with the rear wheel bracket 5 .

As shown in the accompanying drawings, the upper link 10 on each side is rotatably connected with a seat post connector 16, and the seat post connector 16 is slidably connected with a seat post 13. The rear end of the rod 13 is connected to the connecting seat 25, and the seat rod 13 is provided with a seat. The rear end of the seat post 13 is rotatably connected to the connecting base 25 .

A push-up handle 7 is movable on the described push-down handle 6. When the cart frame 1 is unfolded, the push-up handle 7 is opposite to the push-down handle 6. locking. The push-up handle 7 can be slidably arranged on the push-down handle 6 , and can also be rotatably arranged on the push-down handle 6 . The purpose of this structure is to enable the stroller frame to be folded to a smaller volume, and the height of the stroller is convenient for the user to push when unfolded.

A foldable back support 12 is arranged between the push-down handle bars 6 on both sides, and the two outer ends of the back support 12 are respectively connected in rotation with the push-down handle bars 6 on the corresponding sides, so that The above-mentioned rear support 12 makes the stroller more stable when it is in the unfolded state.

As shown in Figure 1, the connecting seat 25 has a first anti-rotation member 19, and when the cart frame 1 is unfolded, the lower link 11 abuts against the first anti-rotation member. 19 on. The connecting seat 25 is provided with a second anti-rotation member 20 , and when the cart frame 1 is unfolded, the push-down lever 6 abuts against the second anti-rotation member 20 . Through the first anti-rotation member 19 and the second anti-rotation member 20, the expansion limit of the baby stroller is made more stable when unfolded.

The connecting base 25 has a first connecting portion 23 extending laterally to both sides respectively, and the lower ends of the push-down levers 6 on each side are respectively connected to the first connecting portion 23 on the corresponding side in a rotational manner. The upper end portions of the lower links 11 are also rotatably connected to the first connecting portions 23 on the corresponding sides, respectively. The first anti-rotation piece 19 and the second anti-rotation piece 20 are provided on the first connecting portion 23 on both sides.

The sliding sleeve 8 has a second connecting portion 24 extending laterally to both sides, the front end of the upper link 10 on each side is connected to the second connecting portion 24 on the corresponding side in a rotational manner, and the rear end of each side The upper end portions of the wheel brackets 5 are also rotatably connected to the second connecting portions 24 on the corresponding sides.

The child stroller is also provided with a locking mechanism, which locks the child stroller in the unfolded position. When the locking mechanism is unlocked, as shown in accompanying drawings 2 to 4, the stroller can be folded, and as shown in accompanying drawing 5, the stroller can finally be folded to a smaller size. For example, the locking mechanism may be that a lock pin is slidably provided on the push-down handle 6, a lock hole is opened on the connecting seat 25, and a lock pin is provided on the push-down handle 6. The control part for controlling the lock pin, when locked, the lock pin is inserted into the lock hole, and when unlocked, the lock pin is separated from the lock hole.

Embodiment 2: As shown in accompanying drawings 6 and 7, a children's stroller includes a stroller frame 1, a front wheel assembly 2, and a rear wheel assembly 3, and the stroller frame 1 includes a The side brackets 18 on both sides of the trolley frame 1, the front wheel bracket 4 between the side brackets 18 on both sides, the side bracket 18 includes a rear wheel bracket 5, a push-down handle bar 6, The front wheel assembly 2 is arranged at the front end of the front wheel bracket 4 , and the rear wheel assembly 3 is arranged at the lower end of the rear wheel bracket 5 . The rear end of the front wheel bracket 4 is connected with a connecting seat 25, and the lower end of the push-down lever 6 is rotationally connected with the connecting seat 25, and the front wheel bracket 4 is connected along its There are two front wheel brackets 4, and the rear parts of the two front wheel brackets 4 are respectively connected to the connecting seat 25 in a rotational manner. The two front wheel brackets 4 are slidably arranged with the two sides of the sliding sleeve 8 respectively, and the upper end of the rear wheel bracket 5 is connected with the sliding sleeve 8 in a rotational manner. The side bracket 18 also includes an upper link 10 and a lower link 11, the rear end of the upper link 10 is rotatably connected with the push-down handle 6, and the upper link 10 is The front end is rotatably connected to the sliding sleeve 8, the upper end of the lower link 11 is rotatably connected to the connecting seat 25, and the lower end of the lower link 11 is rotatably connected to the rear The wheel bracket 5 is rotatably connected.

The two sides of the sliding sleeve 8 are respectively provided with through holes 27, and the front wheel bracket 4 on each side is respectively slidably inserted into the through holes 27 on the corresponding side. There is a limit surface 28 in the through hole 27 on each side, and when the cart frame is in an unfolded state, the front wheel bracket 4 on each side respectively abuts against the corresponding limit surface 28 . The limiting surface 28 enables stable expansion between the front wheel brackets 4 on both sides when the stroller is in the unfolded state.

The upper link 10 on each side is rotatably connected with a seat post connector 16, the seat post connector 16 is slidably connected with a seat post 13, and the rear end of the seat post 13 is connected to the The connecting seat 25 is connected, and the seat bar 13 is provided with a seat. The rear end of the seat post 13 is rotatably connected to the connecting base 25 .

A push-up handle 7 is movable on the described push-down handle 6. When the cart frame 1 is unfolded, the push-up handle 7 is opposite to the push-down handle 6. locking. The push-up handle 7 can be slidably arranged on the push-down handle 6 , and can also be rotatably arranged on the push-down handle 6 . The purpose of this structure is to enable the stroller frame to be folded to a smaller volume, and the height of the stroller is convenient for the user to push when unfolded.

A foldable back support 12 is arranged between the push-down handle bars 6 on both sides, and the two outer ends of the back support 12 are respectively connected in rotation with the push-down handle bars 6 on the corresponding sides, so that The above-mentioned rear support 12 makes the stroller more stable when it is in the unfolded state.

The connecting base 25 is provided with a first anti-rotation member 19 , and when the cart frame 1 is unfolded, the lower link 11 abuts against the first anti-rotation member 19 . The connecting seat 25 is provided with a second anti-rotation member 20 , and when the cart frame 1 is unfolded, the push-down lever 6 abuts against the second anti-rotation member 20 . Through the first anti-rotation member 19 and the second anti-rotation member 20, the expansion limit of the baby stroller is made more stable when unfolded.

The connecting base 25 has a first connecting portion 23 extending laterally to both sides respectively, and the lower ends of the push-down levers 6 on each side are respectively connected to the first connecting portion 23 on the corresponding side in a rotational manner. The upper end portions of the lower links 11 are also rotatably connected to the first connecting portions 23 on the corresponding sides, respectively. The first anti-rotation piece 19 and the second anti-rotation piece 20 are provided on the first connecting portion 23 on both sides.

The sliding sleeve 8 has a second connecting portion 24 extending laterally to both sides, the front end of the upper link 10 on each side is connected to the second connecting portion 24 on the corresponding side in a rotational manner, and the rear end of each side The upper end portions of the wheel brackets 5 are also rotatably connected to the second connecting portions 24 on the corresponding sides.

The child stroller is also provided with a locking mechanism, which locks the child stroller in the unfolded position. When the locking mechanism is unlocked, the stroller can be folded and eventually the stroller can be folded to a smaller volume. For example, the locking mechanism may be that a lock pin is slidably provided on the push-down handle 6, a lock hole is opened on the connecting seat 25, and a lock pin is provided on the push-down handle 6. The control part for controlling the lock pin, when locked, the lock pin is inserted into the lock hole, and when unlocked, the lock pin is separated from the lock hole.

Claims (13)

1. A stroller for children, comprising a stroller frame (1), a front wheel assembly (2), and a rear wheel assembly (3), and the stroller frame (1) includes a (1) side brackets (18) on both sides, front wheel brackets (4) between the side brackets (18) on both sides, described side brackets (18) include rear wheel brackets (5) , push down the bar (6), the front wheel assembly (2) is arranged on the front end of the front wheel bracket (4), and the rear wheel assembly (3) is arranged on the rear wheel bracket The lower end of (5) is characterized in that: the rear end of the front wheel bracket (4) is connected with a connecting seat (25), and the lower end of the push-down lever (6) is connected to the The seat (25) is connected in rotation, and a sliding sleeve (8) is provided on the front wheel bracket (4) to slide along its front and rear direction, and the upper end of the rear wheel bracket (5) is connected with the sliding sleeve (8). The sleeve (8) is rotatably connected, and the side bracket (18) also includes an upper link (10) and a lower link (11), and the rear end of the upper link (10) is connected to the The push-down lever (6) is rotatably connected, the front end of the upper link (10) is rotatably connected with the sliding sleeve (8), and the upper end of the lower link (11) It is rotatably connected with the connecting seat (25), and the lower end of the lower link (11) is rotatably connected with the rear wheel bracket (5). 2. The children's stroller according to claim 1, characterized in that: the front wheel bracket (4) is single and its rear part is fixedly connected with the connecting seat (25) and forms a whole . 3. The stroller according to claim 1, characterized in that there are two front wheel brackets (4), and the rear parts of the two front wheel brackets (4) are respectively connected to the The connecting seat (25) is connected in rotation, and the two front wheel brackets (4) are respectively arranged to slide with the two sides of the sliding sleeve (8). 4. The stroller according to claim 3, characterized in that: the two sides of the sliding sleeve (8) are respectively provided with through holes (27), and the front wheel brackets (4) on each side slide Insert it into the through hole (27) on the corresponding side. 5. The baby stroller according to claim 4, characterized in that: each side of the through hole (27) has a limit surface (28), when the said stroller frame is in the unfolded state, each side of the stroller The front wheel brackets (4) respectively abut on the corresponding limiting surfaces (28). 6. The children's stroller according to claim 1, characterized in that: the upper link (10) on each side is rotatably connected with a seat post connecting piece (16), and the seat post connecting piece (16) is slidably connected with a seat bar (13), the rear end of the seat bar (13) is connected with the connecting seat (25), and the seat bar (13) is provided with a seat . 7. The stroller for children according to claim 6, characterized in that: the rear end of the seat post (13) is rotatably connected to the connecting seat (25). 8. The children's stroller according to claim 1, characterized in that: the push-down handle (6) is movable on the push-up handle (7), and the push-cart frame (1) When deployed, the push-up lever (7) is relatively locked with the push-down lever (6). 9. The baby stroller according to claim 1, characterized in that: a foldable back support (12) is arranged between the push-down handle bars (6) on both sides, and the back support (12) ) are rotationally connected with the push-down lever (6) on the corresponding side respectively. 10. The stroller for children according to claim 1, characterized in that: the connecting seat (25) has a first anti-rotation member (19), when the stroller frame (1) is unfolded, the The said lower connecting rod (11) abuts on said first anti-rotation member (19). 11. The stroller for children according to claim 1, characterized in that: the connecting seat (25) has a second anti-rotation member (20), when the stroller frame (1) is unfolded, the The push-down lever (6) is pressed against the second anti-rotation member (20). 12. The children's stroller according to claim 1, characterized in that: the connecting seat (25) has first connecting parts (23) extending laterally to both sides respectively, and the push-down levers on each side ( 6) The lower ends are respectively rotatably connected to the first connecting parts (23) on the corresponding sides, and the upper ends of the lower links (11) on each side are also rotatably connected to the first connecting parts (23) on the corresponding sides respectively. connect. 13. The children's stroller according to claim 1, characterized in that: the sliding sleeve (8) has second connecting parts (24) extending laterally to both sides respectively, and the upper link (10) on each side ) are respectively rotatably connected to the second connecting portion (24) on the corresponding side, and the upper ends of the rear wheel brackets (5) on each side are also rotatably connected to the second connecting portion (24) on the corresponding side .

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