CN116513293A - Child cart - Google Patents

Abstract

A stroller, the frame of which comprises: the front wheel support, the upper portion of the front wheel support is fixed with the sliding piece, the inferior part of the front wheel support has front wheel assemblies; the upper part of the rear wheel bracket is pivotally connected with the upper part of the front wheel bracket, and the lower part of the rear wheel bracket is provided with a rear wheel assembly; the push rod and the sliding piece are arranged in a sliding way along the up-down direction; the front part of the connecting rod is pivotally connected with the lower part of the push rod, and the rear part of the connecting rod is pivotally connected with the rear wheel bracket. That is, the push rod slides through the front wheel bracket, so that a connection relation which can slide and rotate is generated relative to the rear wheel bracket, and a deformable triangle mechanism is formed among the push rod, the front wheel bracket, the rear wheel bracket and the connecting rod piece. The whole car is folded, the top of the push rod is still upwards after folding, the unfolding and folding operations of a user are all convenient, and the operation experience is more comfortable. The whole frame has simple structure and compact shape. After the unfolding position is locked, the triangle relationship formed by the front wheel support, the rear wheel support and the connecting rod piece is unfolded more stably.

Description

stroller

technical field

The invention belongs to the field of household daily necessities, and in particular relates to a children's stroller.

Background technique

Strollers are indispensable products in the growth process of infants and young children. Children's strollers are generally able to be folded for easy portability. As disclosed in the authorized announcement CN219115538U, a child stroller frame includes front legs, rear legs that rotate through the first axis, a strut assembly that rotates through the second axis, and a support base that is connected through the rotation of the third axis. The linkage assembly arranged between the strut assembly, the front leg and the rear leg, when the linkage assembly is locked, the front leg and the rear leg can be unfolded and fixed, and when unlocked, the strut assembly is rotated and folded relative to the front leg to drive the rear leg forward Legs turn and fold. The appearance of the whole vehicle is simple, but the linkage assembly involves a front leg, a strut assembly, and left and right rear legs. There are four parts in total. To lock or unlock these four parts at the same time, the mechanism is relatively complicated, and the assembly and production are more troublesome. The top of the rear strut assembly faces downward, and the user experience is poor during the unfolding and folding process.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stroller for children.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a children's stroller, which has a frame in an unfolded position and a stowed position, a front wheel assembly, a rear wheel assembly, and a frame locking mechanism, and the frame includes: The front wheel bracket, the upper part of the front wheel bracket is fixed with a sliding part, and the lower part of the front wheel bracket is provided with the front wheel assembly; the rear wheel bracket, the upper part of the rear wheel bracket is pivoted with the upper part of the front wheel bracket connected, the rear wheel assembly is provided on the lower part of the rear wheel bracket; the push rod is arranged to slide up and down with the sliding piece; the connecting rod, the front part of the connecting rod is connected to the pushing The lower part of the rod is pivotally connected, and the rear part of the link member is pivotally connected with the rear wheel bracket. That is, the push rod slides through the front wheel bracket, thereby producing a connection relationship that can slide and rotate relative to the rear wheel bracket, and a deformable triangular mechanism is formed between the push rod, the front wheel bracket, the rear wheel bracket and the connecting rod.

In some embodiments, the rear wheel bracket includes a left rear wheel bracket and a right rear wheel bracket, the rear wheel assembly is respectively arranged on the lower part of the left rear wheel bracket and the right rear wheel bracket, and the left rear wheel bracket The wheel support extends upwards from the upper part to form a left seat frame, and the right rear wheel support extends upwards from the upper part to form a right seat frame.

In some embodiments, the front wheel bracket is single, and is located at the left and right center position of the vehicle frame, and the upper part of the left seat frame and the upper part of the right seat frame are connected with the front wheel bracket respectively. The left and right sides of the upper part are rotatably connected, and the lower part of the front wheel bracket is provided with the front wheel assembly.

In some embodiments, the connecting rod is V-shaped, the most recessed part is located at the front and is pivotally connected to the lower part of the push rod, and the two ends are located at the rear respectively to pivot on the left rear wheel bracket and the right rear wheel bracket. connect.

In some embodiments, a bag is bound between the rear wheel bracket and the right rear wheel bracket.

In some embodiments, the sliding member is a sliding sleeve fixed on the upper part of the front wheel bracket, and a single push rod is inserted into the sliding sleeve so as to be able to slide up and down.

In some embodiments, the push rod parts respectively extend in the left and right directions and then extend forward to form a left push handle and a right push handle, and the left push handle, the right push handle and the left push handle A space for installing a seat pocket is formed between the side seat frame and the right side seat frame.

In some embodiments, the frame locking mechanism is disposed between the lower part of the push rod and the sliding member.

In some embodiments, the pivot connection of the rear wheel bracket and the front wheel bracket is located at the front side of the push rod.

The scope of the present invention 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 present invention has the following advantages compared with the prior art: The present invention provides a new folding principle of children's stroller, which has the following advantages:

1. The push rod, the front wheel bracket, and the rear wheel bracket form a deformable triangular mechanism through the connecting rod. It only needs to be locked between two parts in any rotational relationship or between two parts in a sliding relationship on the triangular mechanism. The entire frame can be locked, and the frame locking mechanism can be handled more easily. After locking, the triangle relationship is more stable;

2. In the unfolded position of the cart, the push rod extends upward relative to the front wheel bracket, and the connecting rod is close to the rotational connection between the front wheel bracket and the rear wheel bracket, and the shape of the whole vehicle is simple;

3. In the folded position of the cart, the push rod drops downward relative to the front wheel bracket, the triangle mechanism deforms, the rear wheel bracket moves closer to the front wheel bracket, and the top of the push rod still faces upwards after folding. It is convenient for users to unfold and fold, and the operation experience is excellent More comfortable.

Description of drawings

Accompanying drawing 1 is the three-dimensional schematic view of the stroller in the unfolded position (embodiment 1);

Accompanying drawing 2 is a schematic diagram of the side view of the children's stroller in the unfolded position (embodiment 1);

Accompanying drawing 3 is the three-dimensional schematic view of the stroller in the folded position (embodiment 1);

Accompanying drawing 4 is a schematic diagram of the side view of the children's stroller in the folded position (embodiment 1);

Accompanying drawing 5 is the schematic diagram of the frame mechanism of the children's stroller (embodiment 2);

Wherein: 1, front wheel support; 1a, sliding part; 2, rear wheel support; 21, left rear wheel support; 22, right rear wheel support; 31, left seat frame; 32, right seat frame; 4, push Rod; 4a, left push handle; 4b, right push handle; 5, connecting rod; 6, front wheel assembly; 7, rear wheel assembly; 8, seat pocket; 9, bag; X1; first axle; X2; second axis; X3; third axis.

Implementation

Embodiment 1, as shown in accompanying drawings 1-4, a kind of stroller for children, has the vehicle frame of expanded position and stowed position, front wheel assembly 6, rear wheel assembly 7, and the vehicle frame is locked in the expanded position rack locking mechanism.

Frame includes:

Front wheel bracket 1, the front wheel bracket 1 is a single piece, located in the left and right center of the frame, the upper part of the front wheel bracket 1 is fixed with a sliding piece 1a, the sliding piece 1a is a sliding sleeve, and the center line of the sliding sleeve extends along the up and down direction ;

Rear wheel support 2, comprises left rear wheel support 21 and right rear wheel support 22, and left rear wheel support 21 and right rear wheel support 22 are respectively positioned at the both sides of single-leg front wheel support 1, and the upper part and front wheel support 1 upper left and right sides respectively The two sides are pivotally connected around the first axis, and the lower parts are respectively provided with rear wheel assemblies 7;

Push rod 4, the push rod 4 is a single piece, which can be inserted into the slider 1a so as to slide up and down linearly. There is an included angle a with the front wheel bracket 1, and the included angle a is 20°-40°, such as 32° in this embodiment, so that the push rod can well control the following link 5 during the folding process of the vehicle frame, Thereby driving the rear wheel bracket 2 to approach the direction of the front wheel bracket 1, and also make the front and rear flatter after folding;

The connecting rod 5, the connecting rod 5 is a V-shaped connecting rod, the most recessed part is located at the front and is pivotally connected with the lower part of the push rod 4 around the second axis, and the two ends are located at the rear and respectively connected with the corresponding left rear wheel bracket 21, The right rear wheel support 22 is pivotally connected around the third axis, so that the left rear wheel support 21 and the right rear wheel support 22 form a synchronous rotation with respect to the front wheel support 1, and there is a tie between the rear wheel support 21 and the right rear wheel support 22 car pack 9;

The bottom of the front wheel bracket 1 is provided with a front wheel assembly 6, and the bottom of the left rear wheel bracket 21 and the right rear wheel bracket 22 are respectively provided with a rear wheel assembly 7.

In this embodiment, as shown in Figures 1-3, the single push rod 4 itself is a telescopic rod, and a telescopic positioning mechanism is arranged between the two, and the user can adjust it to a suitable height in the unfolded position. The vehicle frame locking mechanism of this solution is also arranged between the lower part of the push rod 4 and the sliding part 1a, that is, the sliding sleeve. Sliding locking between the push rod 4 and the sliding member 1a means that the entire vehicle frame is locked in a triangular stable state, and the structure is simple and easy to manufacture.

The telescopic positioning mechanism and the frame locking mechanism have the same principle, and are not the invention points of this scheme. As long as it is a mechanism that can lock between the two sliding tubes, it is applicable here, such as the frame locking mechanism, which rotates or slides on the sliding sleeve An elastic lock is provided, and a lock hole is opened at the lower part of the push rod. When one end of the elastic lock is inserted into the lock hole, the sliding sleeve and the push rod are locked. The spring in the lock hole overcomes the spring and presses the elastic lock piece to break away from the lock hole, so that the vehicle frame can be unlocked.

The top of the push rod 4 respectively extends to the left and right direction and then extends forward to form a left push handle 4a and a right push handle 4b. The left rear wheel support 21 continues to extend upwards from the top to form a left seat frame 31 , and the right rear wheel support 22 continues to extend upwards from the top to form a right seat frame 32 . The left side push handle 4a, the right side push handle 4b and the ends of the left side seat frame 31 and the right side seat frame 32 are installed with four corners of the seat pocket 8 respectively.

When folding, as shown in accompanying drawings 2 and 4, unlock the telescopic positioning mechanism of the push rod 4, shrink the push rod 4 to the shortest, unlock the vehicle frame locking mechanism, and continue to press the push rod 4 down. The rod 5, the angle between the connecting rod 5 and the push rod 4 is narrowed and relatively close together, so that the rear wheel bracket 2 is also close to the lower part of the push rod 4, and is also close to the front wheel bracket 1, that is, the front wheel assembly 6 and the rear wheel assembly 7 close together, while the left seat frame 31 and the right seat frame 32 above are close to the top of the push rod 4. When the whole vehicle is folded, the bottom of the push rod 4 can touch the ground after folding. Combined with the front and rear wheel assemblies, a self-supporting The effect is that the top is still facing up, and it is convenient for the user to unfold and fold the operation, and the operation experience is more comfortable. The whole frame is simple in structure and simple in shape. Otherwise, the vehicle frame needs to be launched, only the push rod 4 needs to be pulled up, under the deformation of the triangular mechanism, the left rear wheel support 21 and the right rear wheel support 22 are synchronously launched forward and backward relative to the front wheel support 1, and the left seat frame 31, The right side seat frame 32 is synchronously launched forward and backward relative to the push rod 4, and the push rod 4 is pulled up to the limit, and the vehicle frame locking mechanism automatically locks under the action of the spring, and the length of the push rod 4 is adjusted to a suitable height position, and then it can be used. The triangular relationship formed by the front wheel bracket, the rear wheel bracket, the connecting rod and the push rod in the unfolded position is stable.

Embodiment 2, as shown in FIG. 5 , the difference between Embodiment 2 and Embodiment 1 is that the first pivot axis X1 of the rear wheel bracket 2 and the front wheel bracket 1 is located at the front side of the push rod 4 . This makes it possible to better avoid the problem that during the folding process of the vehicle frame, the left push handle 4a and the right push handle 4b may interfere with the approaching left seat frame 31 and right seat frame 32 and affect the folding process. , making the folding more smooth and smaller after folding.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (9)

1. A child stroller having a frame, a front wheel assembly (6), a rear wheel assembly (7), and a frame locking mechanism in an extended position and a retracted position, characterized in that: the frame comprises:

a front wheel bracket (1), wherein a sliding piece (1 a) is fixed at the upper part of the front wheel bracket (1), and the front wheel assembly (6) is arranged at the lower part of the front wheel bracket (1);

the rear wheel support (2), the upper part of the rear wheel support (2) is in pivot connection with the upper part of the front wheel support (1), and the rear wheel assembly (7) is arranged at the lower part of the rear wheel support (2);

a push rod (4), wherein the push rod (4) and the sliding piece (1 a) are arranged in a sliding manner along the up-down direction;

and the front part of the connecting rod piece (5) is pivotally connected with the lower part of the push rod (4), and the rear part of the connecting rod piece (5) is pivotally connected with the rear wheel bracket (2).

2. The stroller of claim 1, wherein: the rear wheel support (2) comprises a left rear wheel support (21) and a right rear wheel support (22), the left rear wheel support (21) and the right rear wheel support (22) are respectively arranged at the lower parts of the rear wheel assembly (7), the left rear wheel support (21) extends upwards from the upper part to form a left seat frame (31), and the right rear wheel support (22) extends upwards from the upper part to form a right seat frame (32).

3. The stroller of claim 2, wherein: the front wheel support (1) is a single one and is positioned at the left and right central positions of the frame, the upper part of the left seat frame (31) and the upper part of the right seat frame (32) are respectively and rotatably connected with the left and right side parts of the upper part of the front wheel support (1), and the lower part of the front wheel support (1) is provided with the front wheel assembly (6).

4. A stroller according to claim 3, wherein: the connecting rod piece (5) is V-shaped, the foremost concave part is positioned at the front part and is in pivot connection with the lower part of the push rod (4), and the two ends are respectively in pivot connection with the left rear wheel bracket (21) and the right rear wheel bracket (22) at the rear part.

5. The stroller of claim 4, wherein: a vehicle bag (9) is bound between the rear wheel support (21) and the right rear wheel support (22).

6. A stroller according to claim 3, wherein: the sliding piece (1 a) is a sliding sleeve fixed on the upper portion of the front wheel support (1), and a single push rod (4) can be inserted in the sliding sleeve in an up-and-down sliding mode.

7. The stroller of claim 6, wherein: the top of the push rod (4) extends leftwards and rightwards respectively and then extends forwards to form a left push handle (4 a) and a right push handle (4 b), and a space for installing seat pockets is formed between the left push handle (4 a), the right push handle (4 b), the left seat frame (31) and the right seat frame (32).

8. The stroller of claim 1, wherein: the frame locking mechanism is arranged between the lower part of the push rod (4) and the sliding piece (1 a).

9. The stroller of claim 1, wherein: the pivot connection part of the rear wheel bracket (2) and the front wheel bracket (1) is positioned at the front side of the push rod (4).