CN221214402U

CN221214402U - Foldable tricycle for children

Info

Publication number: CN221214402U
Application number: CN202323307578.5U
Authority: CN
Inventors: 廖整辉
Original assignee: Zhongshan Xingshang Baby Product Co ltd
Current assignee: Zhongshan Xingshang Baby Product Co ltd
Priority date: 2023-12-05
Filing date: 2023-12-05
Publication date: 2024-06-25
Anticipated expiration: 2033-12-05

Abstract

The utility model discloses a foldable children tricycle, which comprises a frame for taking, wherein the frame comprises a frame main body and a seat arranged on the frame main body, the front side of the frame main body is connected with a front support assembly, the front support assembly comprises a connecting seat which is rotatably connected with the frame main body around a first axis A, a steering fork which can rotate in the connecting seat is arranged in the connecting seat, the lower end of the steering fork is connected with a front wheel, the upper end of the steering fork is connected with a steering handle, the rear side of the frame main body is connected with a rear support assembly, the rear support assembly comprises a left rear leg and a right rear leg which are rotatably connected with the frame main body around a second axis B, rear wheels are arranged at the lower ends of the left rear leg and the right rear leg, and a backrest supporting piece for supporting the back of a child is rotatably connected on the frame around a third axis C. The folding portable folding bicycle is simple in structure, can be folded and is convenient to carry.

Description

Foldable tricycle for children

[ Field of technology ]

The utility model relates to a foldable tricycle for children.

[ Background Art ]

Child tricycles have become a common product used during child growth. For example, chinese patent publication No. (CN 207790989U) discloses a child tricycle, which comprises a main frame, a saddle provided on the main frame, a handle bar riser connected to one end of the main frame, a front fork connected to the handle bar riser, a front wheel provided on the front fork, a rear wheel bracket connected to the other end of the main frame, rear wheels provided on both sides of the rear wheel bracket, and a directional mechanism connected between the handle bar riser and the front fork. However, the child tricycle cannot be folded, occupies a large space when not in use, and is inconvenient to carry.

The present utility model has been made in view of the above drawbacks.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provides the children tricycle which is simple in structure, foldable and convenient to carry.

The utility model is realized by the following technical scheme:

The utility model provides a collapsible children tricycle, can follow expansion position and remove folding position after locking device unblock, including the frame 1 that can take, frame 1 include frame main part 11 and establish the seat 12 on frame main part 11, frame main part 11 front side be connected with front support subassembly 2, front support subassembly 2 include the connecting seat 21 of being connected around first axis A rotatable with frame main part 11, connecting seat 21 in be equipped with and can rotate in it turn fork 22, turn fork 22 lower extreme be connected with front wheel 23, turn fork 22 upper end be connected with steering handle 24, frame main part 11 rear side be connected with back support subassembly 3, back support subassembly 3 include around second axis B and frame main part 11 rotatable coupling's left back leg 31 and right back leg 32 lower extreme all be equipped with rear wheel 33, frame 1 on still be connected with the back support 4 that is used for supporting children's back around third axis C rotatable.

The backrest support 4 is rotatably connected to the frame body 11 about a third axis C.

When moving from the extended position to the folded position, the upper end of the steering handle 24 is moved to a position above the seat 12, the rear wheel 33 is moved to a position near the lower end of the steering fork 22, and the upper end of the back support 4 is moved to a position near the lower end of the steering fork 22.

The lower end of the backrest support 4 and the connecting seat 21 are provided with a first transmission mechanism 5 which can drive the front support assembly 2 to rotate and fold relative to the frame body 11 when the backrest support 4 rotates and folds relative to the frame body 11, and a second transmission mechanism 6 which can drive the left rear leg 31 and the right rear leg 32 to rotate and fold relative to the frame body 11 when the front support assembly 2 rotates and folds relative to the frame body 11 is arranged between the connecting seat 21 and the rear support assembly 3.

The first transmission mechanism 5 comprises a rotating part 51 which is arranged at the lower end of the backrest support 4 and can rotate around a third axis C, a first transmission rod 52 is hinged on the rotating part 51 around a fourth axis D at a position deviating from the third axis C, and the other end of the first transmission rod 52 is hinged on the connecting seat 21 around a fifth axis E at a position deviating from the first axis A.

The back support assembly 3 further comprises a rotating seat 34 arranged at the upper ends of the left back leg 31 and the right back leg 32, the second transmission mechanism 6 comprises a plurality of teeth 61 arranged on the rotating seat 34 along the circumferential direction, a transmission gear 62 capable of being meshed with the teeth 61 is rotatably connected in the frame main body 11 around a sixth axis F, a second transmission rod 63 is hinged at an eccentric position of the transmission gear 62 around a seventh axis G, and the other end of the second transmission rod 63 is hinged on the connecting seat 21 around an eighth axis H and deviates from the position of the first axis A.

The front wheel 23 is detachably connected with a pedal 25 which can drive the foldable tricycle to walk when the tricycle is stepped on.

The locking device comprises a locking groove 71 arranged on a connecting seat 21, a locking pin 72 which can slide in the locking groove and can be clamped with or separated from the locking groove 71 is arranged in a frame main body 11, an operation part 73 which can be gripped by a hand and can slide relative to the frame main body 11 is arranged at the rear end of the frame main body 11, a ring-shaped structure 74 which can be penetrated by a finger is arranged at the rear end of the frame main body 11, the operation part 73 is arranged at the inner side of the ring-shaped structure 74, a guy cable which can pull the locking pin 72 to be separated from the locking groove 71 when the operation part 73 is gripped is arranged between the operation part 73 and the locking pin 72, and a first reset spring 75 which can push the locking pin 72 to reset is also arranged in the frame main body 11.

A latch lock capable of locking the lower end of the backrest support 4 and the frame body 11 is arranged between the lower end of the backrest support and the frame body 11, and a button 76 which can be pressed by a thumb to unlock the latch lock when the hand grips the operation part 73 is arranged on the frame body 11 and above the operation part 73.

The backrest support 4 is a plate-shaped structure or a U-shaped rod-shaped structure.

Compared with the prior art, the utility model has the following advantages:

1. When the folding tricycle is folded, the backrest support piece rotates forwards around the third axis to be close to the frame, the front support component rotates backwards around the first axis to be close to the frame, and the rear support component rotates forwards around the second axis to be close to the frame, so that the height of the folded tricycle in the vertical direction is reduced, the packaging and transportation of factories are facilitated, the storage and the carrying of users are facilitated when the tricycle is not used, and the folding tricycle is suitable for popularization and application.

2. When the utility model moves from the unfolding position to the folding position, the upper end of the steering handle moves to the position above the seat, the rear wheel moves to the position close to the lower end of the steering fork, and the upper end of the backrest support moves to the position close to the lower end of the steering fork. Therefore, the folded tricycle for children has compact volume and small occupied space.

3. The back support piece provided by the utility model drives the front support component to rotate and fold towards the frame through the first transmission mechanism when the back support piece is rotated and folded relative to the frame, and drives the rear support component to rotate and fold relative to the frame through the second transmission mechanism when the front support component is rotated and folded relative to the frame, so that the child tricycle can be folded and stored when not in use, and the linkage folding of the front support component and the rear support component can be realized only by rotating the back support piece, so that the folding operation is convenient and quick.

[ Description of the drawings ]

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is one of the side views of the present utility model;

FIG. 3 is an exploded view of the components of the present utility model;

FIG. 4 is one of the cross-sectional views of the present utility model;

FIG. 5 is a second cross-sectional view of the present utility model;

FIG. 6 is one of the perspective views of the components of the present utility model;

FIG. 7 is a second perspective view of the component of the present utility model;

FIG. 8 is a side view of the present utility model during folding;

Fig. 9 is a side view of the present utility model in a folded state.

[ Detailed description ] of the invention

The utility model is further described below with reference to the accompanying drawings:

As shown in fig. 1, 2, 8 and 9, a foldable child tricycle can move from an unfolding position to a folding position after a locking device is unlocked, and comprises a frame 1 capable of being taken, wherein the frame 1 comprises a frame body 11 and a seat 12 arranged on the frame body 11, a front support assembly 2 is connected to the front side of the frame body 11, the front support assembly 2 comprises a connecting seat 21 rotatably connected with the frame body 11 around a first axis a, a steering fork 22 capable of rotating in the connecting seat 21 is arranged in the connecting seat, a front wheel 23 is connected to the lower end of the steering fork 22, a steering handle 24 is connected to the upper end of the steering fork 22, a rear support assembly 3 is connected to the rear side of the frame body 11, the rear support assembly 3 comprises a left rear leg 31 and a right rear leg 32 rotatably connected with the frame body 11 around a second axis B, rear wheels 33 are arranged at the lower ends of the left rear leg 31 and the right rear leg 32, and a backrest 4 for supporting a child is rotatably connected to the frame 1 around a third axis C. When the tricycle is folded, the backrest support 4 rotates forwards around the third axis C to be close to the frame 1, the front support component 2 rotates backwards around the first axis A to be close to the frame 1, and the rear support component 3 rotates forwards around the second axis B to be close to the frame 1, so that the height of the tricycle in the vertical direction after being folded is reduced, the tricycle is convenient for factory packaging and transportation, is also convenient for a user to store and carry when the tricycle is not used, and is suitable for popularization and application

As shown in fig. 1, the backrest support 4 has a U-shaped rod-like structure. Of course, the backrest support 4 may also be a plate-like structure.

As shown in fig. 2, the backrest support 4 is rotatably connected to the frame body 11 about a third axis C. Of course, the back support 4 may also be rotatably connected to the rear side of the seat 12.

As shown in fig. 8 and 9, the upper end of the steering handle 24 is moved to a position above the seat 12, the rear wheel 33 is moved to a position near the lower end of the steering fork 22, and the upper end of the back support 4 is moved to a position near the lower end of the steering fork 22 when moving from the extended position to the folded position. Therefore, the folded tricycle for children has compact volume and small occupied space.

As shown in fig. 3 to 6, a first transmission mechanism 5 capable of driving the front support assembly 2 to rotate and fold relative to the frame body 11 when the back support 4 rotates and folds relative to the frame body 11 is arranged between the lower end of the back support 4 and the connecting seat 21, and a second transmission mechanism 6 capable of driving the left rear leg 31 and the right rear leg 32 to rotate and fold relative to the frame body 11 when the front support assembly 2 rotates and folds relative to the frame body 11 is arranged between the connecting seat 21 and the rear support assembly 3. The back support 4 is folded to frame 1 rotation through first drive mechanism 5 drive front support subassembly 2 when folding relative frame 1 rotation, and front support subassembly 2 is folded to frame 1 rotation folding in-process through second drive mechanism 6 drive back support subassembly 3 again relative frame 1 rotation to make children's tricycle can fold when not using accomodate, only need rotate back support 4 just can realize the linkage folding of front support subassembly 2 and back support subassembly 3 moreover, folding convenient operation is swift.

As shown in fig. 2 to 9, the first transmission mechanism 5 includes a rotating portion 51 provided at the lower end of the backrest support 4 and capable of rotating around a third axis C, a first transmission rod 52 is hinged on the rotating portion 51 and offset from the third axis C around a fourth axis D, and the other end of the first transmission rod 52 is hinged on the connection seat 21 around a fifth axis E and offset from the first axis a. When the backrest support 4 rotates around the third axis C, the backrest support 4 pushes the second transmission rod 72, and the second transmission rod 72 pushes the connecting seat 21 to rotate around the first axis a relative to the frame 1, so as to realize linkage driving of the backrest support 4 to the front support assembly 2.

As shown in fig. 2 to 9, the back support assembly 3 further includes a rotating seat 34 disposed at the upper ends of the left back leg 31 and the right back leg 32, the second transmission mechanism 6 includes a plurality of teeth 61 disposed on the rotating seat 34 and along the circumferential direction, a transmission gear 62 capable of engaging with the teeth 61 is rotatably connected in the frame body 11 around a sixth axis F, a second transmission rod 63 is hinged at an eccentric position of the transmission gear 62 around a seventh axis G, and the other end of the second transmission rod 63 is hinged on the connecting seat 21 around an eighth axis H and is deviated from the first axis a. When the connecting seat 21 is pushed by the first transmission rod 52 to rotate around the first axis a, the connecting seat 21 pulls the second transmission rod 63, the second transmission rod 63 pulls the transmission gear 62 to rotate, and the transmission gear 62 rotates the rotating seat 34 through cooperation with the teeth 61, so that the left rear leg 31 and the right rear leg 32 rotate and fold relative to the frame 1. The whole transmission structure is simple and compact, so that the child tricycle is flexible to fold.

As shown in FIG. 1, the front wheel 23 is detachably connected with a pedal 25 for driving the foldable tricycle to walk when the tricycle is stepped on. The pedal 25 may be removed when the child tricycle is not in use to reduce the lateral size of the child tricycle in the collapsed condition.

As shown in fig. 4, 5 and 7, the locking device includes a locking groove 71 provided on the connecting seat 21, a locking pin 72 capable of sliding in the locking groove and engaging with or disengaging from the locking groove 71 is provided in the frame body 11, an operation portion 73 capable of sliding relative to the frame body 11 by being gripped by a hand is provided at the rear end of the frame body 11, a ring structure 74 capable of being penetrated by a finger is provided at the rear end of the frame body 11, the operation portion 73 is provided inside the ring structure 74, a cable (not shown in the drawing) capable of pulling the locking pin 72 out of the locking groove 71 when the operation portion 73 is gripped is provided between the operation portion 73 and the locking pin 72, a first return spring 75 capable of pushing the locking pin 72 to return is provided in the frame body 11, a latch lock (not shown in the drawing) capable of locking the two is provided between the lower end of the back support 4 and the frame body 11, and a latch 76 capable of being pushed by a thumb when the operation portion 73 is gripped by a thumb is provided above the operation portion 73. When it is necessary to fold the child tricycle, the fingers except the thumb pass through the ring structure 74 and grasp the operation part 73, at this time the operation part 73 slides relative to the frame body 11 to pull the locking pin 72 out of the locking groove 71 through the stay cable, and the button 76 can be pressed with the thumb while grasping the operation part 73, so that the latch lock is unlocked, and thus, the unlocking operation is very convenient and quick, and the simultaneous unlocking of the back support 4 and the front stay assembly 2 is achieved. The latch lock may adopt a conventional latch structure of a latch hole and a latch pin, for example, a latch hole is provided on the frame body 11, a slidable latch capable of being engaged with or disengaged from the latch hole is provided in the rotating portion 51, when the button 76 is pressed, the latch is disengaged from the latch hole to be unlocked, and when the button 76 is released, the elastic element in the rotating portion 51 can push the latch to be reset.

Claims

1. A foldable child tricycle movable from an extended position to a folded position after a locking device is unlocked, characterized by: including frame (1) that can supply to take, frame (1) include frame main part (11) and establish seat (12) on frame main part (11), frame main part (11) front side be connected with preceding support subassembly (2), preceding support subassembly (2) include with frame main part (11) around first axis (A) rotatable coupling seat (21), connecting seat (21) in be equipped with can be at its internal rotation steering fork (22), steering fork (22) lower extreme be connected with front wheel (23), steering fork (22) upper end be connected with steering handle (24), frame main part (11) rear side be connected with back support subassembly (3), back support subassembly (3) including around second axis (B) and frame main part (11) rotatable coupling's left back leg (31) and right back leg (32) lower extreme all be equipped with rear wheel (33), frame (1) on back support (4) around the triaxial back that can rotate.

2. The foldable child tricycle of claim 1, wherein: the backrest support (4) is rotatably connected to the frame body (11) about a third axis (C).

3. The foldable child tricycle of claim 1, wherein: when moving from the unfolded position to the folded position, the upper end of the steering handle (24) moves to a position above the seat (12), the rear wheel (33) moves to a position close to the lower end of the steering fork (22), and the upper end of the backrest support (4) moves to a position close to the lower end of the steering fork (22).

4. The foldable child tricycle of claim 1 or 2 or 3, wherein: the folding bicycle is characterized in that a first transmission mechanism (5) capable of driving the front support assembly (2) to rotate and fold relative to the bicycle frame body (11) when the back support assembly (4) rotates and folds relative to the bicycle frame body (11) is arranged between the lower end of the back support assembly (4) and the connecting seat (21), and a second transmission mechanism (6) capable of driving the left rear leg (31) and the right rear leg (32) to rotate and fold relative to the bicycle frame body (11) when the front support assembly (2) rotates and folds relative to the bicycle frame body (11) is arranged between the connecting seat (21) and the rear support assembly (3).

5. The foldable child tricycle of claim 4, wherein: the first transmission mechanism (5) comprises a rotating part (51) which is arranged at the lower end of the backrest support piece (4) and can rotate around a third axis (C), a first transmission rod (52) is hinged around a fourth axis (D) at the position of the rotating part (51) deviating from the third axis (C), and the other end of the first transmission rod (52) is hinged around a fifth axis (E) on the connecting seat (21) and deviates from the position of the first axis (A).

6. The foldable child tricycle of claim 4, wherein: the back support assembly (3) further comprises a rotating seat (34) arranged at the upper ends of the left back leg (31) and the right back leg (32), the second transmission mechanism (6) comprises a plurality of teeth (61) which are arranged on the rotating seat (34) and are arranged along the circumferential direction, the frame main body (11) is rotationally connected with a transmission gear (62) which can be meshed with the teeth (61) around a sixth axis (F), the eccentric position of the transmission gear (62) is hinged with a second transmission rod (63) around a seventh axis (G), and the other end of the second transmission rod (63) is hinged on the connecting seat (21) around an eighth axis (H) and deviates from the position of the first axis (A).

7. The foldable child tricycle of claim 1 or 2 or 3, wherein: the front wheel (23) is detachably connected with a pedal (25) which can drive the foldable tricycle to walk when the tricycle is stepped on.

8. The foldable child tricycle of claim 1 or 2 or 3, wherein: the locking device comprises a locking groove (71) arranged on a connecting seat (21), a locking pin (72) which can slide in the locking groove and can be clamped with or separated from the locking groove (71) is arranged in a frame main body (11), an operating part (73) which can be gripped by a hand and slide relative to the frame main body (11) is arranged at the rear end of the frame main body (11), an annular structure (74) which can be penetrated by a finger is arranged at the rear end of the frame main body (11), the operating part (73) is arranged on the inner side of the annular structure (74), a guy cable which can pull the locking pin (72) and the locking groove (71) to separate when the operating part (73) is gripped is arranged between the operating part (73) and the locking pin (72), and a first reset spring (75) which can push the locking pin (72) to reset is also arranged in the frame main body (11).

9. The foldable child tricycle of claim 8, wherein: a latch lock capable of locking the lower end of the backrest support (4) and the frame main body (11) is arranged between the lower end of the backrest support and the frame main body (11), and a button (76) which can be pressed by a thumb to unlock the latch lock when the hand grips the operation part (73) is arranged on the frame main body (11) and above the operation part (73).

10. The foldable child tricycle of claim 1, wherein: the backrest support (4) is of a plate-shaped structure or a U-shaped rod-shaped structure.