CN203920860U - Children trolley - Google Patents

Abstract

A kind of child stroller, its described stroller vehicle frame comprises: front wheel support, described front wheel assembly is arranged on the bottom of described front wheel support; Rear wheel support, the top of described rear wheel support and described The upper part of the front wheel bracket is rotatably connected around the first shaft, and the rear wheel assembly is arranged on the lower part of the rear wheel bracket; the seat bracket, the front part of the seat bracket is connected with the front wheel bracket around the second Axial dynamic connection; strut frame, the upper part of the strut frame is connected with the rear part of the seat bracket around the third axis, and the lower part of the strut frame is rotated with the rear bracket around the fourth axis connect. The front wheel bracket, the rear wheel bracket, the seat bracket and the strut frame form a four-bar linkage mechanism. During the folding process, the third axis moves upward, the front wheel bracket and the rear wheel bracket are moved forward and backward, and the seat bracket and the strut frame are folded. Between the front wheel bracket and the rear wheel bracket, the stroller frame is folded.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

The children's stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a front wheel assembly, a rear wheel assembly, a locking device for locking the stroller frame in the unfolded position, and a set on the seat on the cart frame. At present, there are many types of cart frames, the number of rods of the cart frame is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are different.

Utility model content

The technical problem to be solved by the utility model is to provide a stroller for children.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a children's stroller, including a stroller frame with an unfolded position and a folded position, a front wheel assembly, a rear wheel assembly, and a The locking device that the vehicle frame is locked in the unfolded position, and the described trolley frame includes:

A front wheel bracket, the front wheel assembly is arranged at the lower part of the front wheel bracket;

a rear wheel bracket, the upper part of the rear wheel bracket is rotatably connected to the upper part of the front wheel bracket, and the rear wheel assembly is arranged at the lower part of the rear wheel bracket;

seat bracket, the front part of the seat bracket is rotatably connected to the front wheel bracket;

A strut frame, the upper part of the strut frame is rotatably connected to the rear part of the seat bracket, and the lower part of the strut frame is rotatably connected to the rear bracket.

In some embodiments, the locking device is disposed between the seat bracket and the pole frame.

In some embodiments, a seat is provided on the seat frame.

In some further embodiments, the seat is detachably arranged on the seat bracket.

In some still further embodiments, the seat includes a seat frame arranged on the seat frame, a backrest frame whose lower part is rotatably connected to the rear part of the seat frame, and the backrest frame is connected to the seat frame The above-mentioned seat frames can be relatively unfolded and folded, and a backrest locking mechanism is arranged between the two.

In some embodiments, at least a portion of the rear portion of the seat bracket extends rearwardly to form a handle.

In some embodiments, the cart frame further includes a push rod frame arranged on the front wheel bracket.

In some further embodiments, the lower part of the push rod frame is rotatably connected to the upper part of the front wheel bracket. When the cart frame is in the unfolded position, the push rod frame has a The forward push state is tilted upward and backward, and the reverse thrust state is tilted forward from bottom to top. A push rod positioning mechanism is arranged between the push rod frame and the front wheel bracket.

In some embodiments, the upper part of the rear wheel bracket is rotatably connected with the upper part of the front wheel bracket around a first axis, and the front part of the seat bracket is rotatable with the front wheel bracket around a second axis. connection, the upper part of the strut frame is connected to the seat bracket in rotation around the third axis, and the projection of the third axial horizontal plane is located between the first axis and the second axial horizontal plane between projections.

In some further embodiments, the lower part of the brace frame is rotatably connected with the rear wheel bracket around a fourth axis, and the first axis is located at the center of the fourth axis in the direction in which the rear wheel bracket extends. above.

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art: the front wheel bracket, the rear wheel bracket, the seat bracket and the strut frame form a four-bar linkage mechanism. The turning point between moves upwards, and the front wheel bracket and the rear wheel bracket move closer together, the seat bracket and the strut frame are folded between the front wheel bracket and the rear wheel bracket, and the cart frame is folded.

Description of drawings

Accompanying drawing 1 is the three-dimensional view that the cart frame is in the expanded position;

Accompanying drawing 2 is the three-dimensional view (remove seat) that pushcart frame is under the expanded position;

Accompanying drawing 3 is the front view of the cart frame in the unfolded position (the push rod frame is in the forward push state);

Accompanying drawing 4 is the front view (the push rod frame is in reverse push state) of pushcart vehicle frame under the expanded position;

Accompanying drawing 5 is the front view of the cart frame in the conversion process between the unfolded position and the folded position;

Accompanying drawing 6 is the front view of the cart frame in the folded position;

Among them: 11. Front wheel bracket; 12. Rear wheel bracket; 13. Seat bracket; 14. Handle; 15. Pole frame; 16. Push rod frame; 17. Seat; 171. Seat frame; 172. Backrest frame; 21, the first shaft; 22, the second shaft; 23, the third shaft; 24, the fourth shaft; 25, the fifth shaft; 31, the front wheel assembly; 32, the rear wheel assembly.

Detailed ways

As shown in the accompanying drawings, a child stroller includes a stroller frame with an unfolded position and a folded position, a front wheel assembly 31, a rear wheel assembly 32, and a locking mechanism for locking the stroller frame in the unfolded position. device, can be detached or can be fixedly arranged on the seat 17 on the cart frame.

Specifically, the trolley frame includes:

Front wheel bracket 11, front wheel assembly 31 is arranged on the bottom of described front wheel bracket 11;

Rear wheel support 12, the top of described rear wheel support 12 and the top of front wheel support 11 are rotatably connected around first axis 21, and rear wheel assembly 32 is arranged on the bottom of described rear wheel support 12;

Seat support 13, the front part of seat support 13 is connected with front wheel support 11 around the second shaft 22, and the second shaft 22 is located in front of the first shaft 21;

A strut frame 15, the top of the strut frame 15 is connected with the rear part of the seat bracket 13 around the third axis 23, and the bottom of the strut frame 15 is connected with the rear bracket around the fourth axis 24, and the fourth axis 24 is located at At the rear lower part of the first axis 21 , the projection of the third axis 23 to the horizontal plane is located between the respective projections of the first axis 21 and the second axis 22 to the horizontal plane.

Described front wheel support 11, trailing wheel support 12, seat support 13 and strut frame 15 constitute four-bar linkage.

In this embodiment, the locking device is arranged between the seat bracket 13 and the strut frame 15 . The specific structure of the locking device is not the design point of the present utility model, as long as it is a structure that can lock between two rotating parts, it can be applied here. The position of locking device can also be arranged between the seat support 13 and the rear wheel support 12, or between the front wheel support 11 and the rear wheel support 12 except being arranged between the seat support 13 and the strut frame 15, as long as it is The aforementioned four-bar linkage mechanism can be locked into a triangular mechanism.

The seat 17 is detachably or directly fixedly arranged on the seat bracket 13, detachable is preferable. The specific dismounting method is not the design point of the present utility model, and will not be described in detail here.

In this embodiment, the seat 17 can also be folded. Seat 17 comprises the back frame 172 that is arranged on the seat frame 171 on the seat support 13, the rear portion that the bottom is rotatably connected with seat frame 171, and back frame 172 can unfold and fold relative to seat frame 171, between back frame 172 and seat frame 171 Equipped with a backrest locking mechanism. The backrest locking mechanism is not the design point of the present utility model, as long as it can lock the structure between the two rotating parts, it can be applied here. The seat 17 itself can be folded, so when the stroller frame is folded, it need not be disassembled from the seat support 13 .

The stroller frame also includes a push rod frame 16 arranged on the front wheel bracket 11 . The bottom of the push rod frame 16 is connected with the top of the front wheel bracket 11 around the fifth axis 25. When the cart frame is in the unfolded position, the push rod frame 16 has a forward push state tilted from bottom to top, and has a In the reverse push state of downward upward tilting forward, a push rod positioning mechanism is arranged between the push rod frame 16 and the front wheel bracket 11 . The push rod frame 16 just rotates with the front wheel support 11, so it does not participate in the folding of the aforementioned four-bar linkage. Similarly, the push rod positioning mechanism is not the design point of the present utility model, as long as it is a structure that can lock between two rotating parts, it can be applied here. When the push rod frame 16 is in the process of switching between the forward push state and the reverse push state, the push rod positioning mechanism is unlocked, so that the push rod frame 16 can rotate around the fifth axis 25, and after reversing, it is locked by the push rod positioning mechanism.

At least part of the rear portion of the seat bracket 13 extends rearwardly to form a carrying handle 14 . In a preferred embodiment of the present utility model, the locking device is controlled to be unlocked by a button on the handle 14 . And the upper pull handle 14 controls the aforementioned four-bar linkage mechanism to gather and fold.

As shown in accompanying drawings 3 to 6, when the stroller frame is converted from the unfolded position to the folded position, the backrest locking mechanism is first unlocked so that the backrest 172 is rotated and folded relative to the seat frame 171, and then the push rod The positioning mechanism is unlocked, so that the push rod frame 172 is folded and folded relative to the front wheel bracket 11, and then the locking device is unlocked, the aforementioned four-bar linkage is folded and gathered, and the whole push rod vehicle frame is folded and gathered, with a simple structure.

Vice versa, the aforementioned four-bar linkage mechanism is launched first, the locking device is locked, and then the push rod frame 16 is launched and locked by the push rod positioning mechanism, and then the seat 17 is launched.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. A stroller for children, comprising a stroller frame with an unfolded position and a folded position, a front wheel assembly (31), a rear wheel assembly (32), for locking the stroller frame in the unfolded position The locking device is characterized in that: Described cart frame comprises: A front wheel bracket (11), the front wheel assembly (31) is arranged at the lower part of the front wheel bracket (11); The rear wheel bracket (12), the upper part of the rear wheel bracket (12) is rotatably connected with the upper part of the front wheel bracket (11), and the rear wheel assembly (32) is arranged on the rear wheel bracket (12) ) of the lower part; A seat bracket (13), the front part of the seat bracket (13) is rotatably connected to the front wheel bracket (11); The strut frame (15), the upper part of the strut frame (15) is rotatably connected with the rear part of the seat bracket (13), and the lower part of the strut frame (15) is rotatably connected with the rear bracket connect. 2. The stroller for children according to claim 1, characterized in that: the locking device is arranged between the seat bracket (13) and the pole frame (15). 3. The stroller for children according to claim 1, characterized in that: the seat bracket (13) is provided with a seat (17). 4. The stroller for children according to claim 3, characterized in that the seat (17) is detachably arranged on the seat bracket (13). 5. The stroller according to claim 3, characterized in that: the seat (17) includes a seat frame (171) arranged on the seat bracket (13), a lower part and the seat frame (171) is rotatably connected to the backrest frame (172), the backrest frame (172) and the seat frame (171) can be relatively unfolded and folded, and a backrest locking mechanism is arranged between them . 6. The stroller for children according to claim 1, characterized in that: at least part of the rear part of the seat bracket (13) extends backwards to form a handle (14). 7. The stroller for children according to claim 1, characterized in that: the stroller frame further comprises a push rod frame (16) arranged on the front wheel bracket (11). 8. The children's stroller according to claim 7, characterized in that: the lower part of the push rod frame (16) is rotatably connected with the upper part of the front wheel bracket (11), when the stroller When the frame is in the unfolded position, the push rod frame (16) has a forward push state inclined from bottom to top and backward, and has a reverse push state from bottom to top, and the push rod frame (16) is in the same state as A push rod positioning mechanism is arranged between the front wheel brackets (11). 9. The stroller for children according to claim 1, characterized in that: the upper part of the rear wheel bracket (12) is connected with the upper part of the front wheel bracket (11) around the first shaft (21), so that The front part of the seat bracket (13) is rotationally connected with the front wheel bracket (11) around the second axis (22), and the upper part of the strut frame (15) is connected with the seat bracket (13) Rotationally connected around the third axis (23), the projection of the third axis (23) to the horizontal plane is located between the projection of the first axis (21) and the second axis (22) to the horizontal plane. 10. The children's stroller according to claim 9, characterized in that: the lower part of the strut frame (15) is rotatably connected with the rear wheel bracket (12) around the fourth axis (24), and the rear The first axis (21) is located above the fourth axis (24) in the direction in which the wheel bracket (12) extends.