CN108839705B - A children's stroller - Google Patents

Abstract

The invention discloses a children's stroller, which includes a frame with an unfolded state and a folded state, a front wheel assembly located at the front of the bottom of the frame, and a rear wheel assembly located at the rear of the bottom of the frame. The locking mechanism locks the vehicle frame in the unfolded state. The vehicle frame of the present invention is simple, comfortable and beautiful to set up. After folding, the lower part of the front wheel bracket, the lower part of the rear wheel bracket and the upper end of the push rod are close to each other. , making the frame smaller and flatter.

Description

A children's stroller

Technical field

The invention relates to a children's stroller.

Background technique

Most existing strollers use folding frames to reduce the storage volume of the stroller. Stroller users increasingly want the folded stroller to be as small as possible. Therefore, the folding structure of the current stroller is becoming more and more compact. It is becoming more and more complex to make the folded volume of the frame as small as possible. However, the overly complex folding structure makes the folding and use of the stroller more and more complicated and inconvenient.

Therefore, there is currently a need for a children's stroller that has a simple structure, is easy to use, and has a flat frame after folding.

Contents of the invention

The object of the present invention is to provide a children's stroller with a simple structure and a flat shape after folding.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller, including a frame with an unfolded state and a folded state, a front wheel assembly located at the bottom front of the frame, The rear wheel assembly at the rear of the bottom and a locking mechanism for locking the frame in the unfolded state. The frame includes two sets of side brackets located on the left and right sides of the stroller. The side brackets on each side Both include a front wheel bracket, a rear wheel bracket, a push rod, a basket rod, a swing rod, a seat rod and a connecting rod. The upper part of the rear wheel bracket is pivotally connected to the upper part of the front wheel bracket. The push rod The lower part is pivotally connected to the upper part of the front wheel bracket, and the front part of the seat post can be relatively rotated and relatively slidably connected to the front wheel bracket or the rear wheel bracket along its length direction. , the front part of the basket rod is pivotally connected to the lower part of the front wheel bracket, the swing rod is pivotally connected to the rear wheel bracket, and the lower part of the swing rod is connected to the basket rod The upper part is pivotally connected to the rear part of the seat post; the two ends of the connecting rod are pivotally connected to the push rod and the seat post respectively. When the frame is folded, the The push rod is flipped backward and retracted to the rear side of the rear wheel bracket, and the front wheel bracket and the rear wheel bracket are close together in the front and rear direction.

Preferably, an adapter is provided at the front of the seat post, the seat post is connected to the adapter in a relatively sliding manner along its length direction, and the adapter is pivotally connected to the front wheel bracket. The upper part or pivot is connected to the upper part of the rear wheel bracket.

Further preferably, the front wheel bracket includes a body part connected to the front wheel assembly and a joint fixedly provided on the upper end of the body part, and the upper end of the joint is rotationally connected to the lower end of the push rod. , the adapter piece is pivotally connected to the lower end of the joint piece.

Further preferably, the adapter has a through hole, and the front part of the seat post is slidably inserted into the through hole.

Further preferably, the upper part of the front wheel bracket, the upper part of the rear wheel bracket and the adapter are pivotally connected together through a first axis.

Further preferably, the upper part of the front wheel bracket and the lower part of the push rod are pivotally connected through a second shaft, and the first shaft is located below the second shaft.

Preferably, when the vehicle frame is in the unfolded state, the front wheel bracket and the push rod on the same side extend in the same length direction, and the front wheel bracket, the push rod, the seat rod and the connecting rod form a triangular structure.

Preferably, the swing bar is pivotally connected to the rear wheel bracket through a third axis, the upper part of the swing bar is pivotally connected to the seat post through a fourth axis, and the lower part of the swing bar is connected to the basket. The basket rod is pivotally connected through a fifth axis, and the fifth axis and the fourth axis are respectively located at the front and rear sides of the rear wheel bracket.

Preferably, the basket rod and the seat rod are both U-shaped rod structures, and the side brackets on both sides are connected through the basket rod and the seat rod.

Preferably, the front wheel bracket, the rear wheel bracket, the swing rod, and the basket rod constitute a four-bar linkage.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

1. The frame of the present invention is simple, comfortable and beautiful in setting, and after folding, the lower part of the front wheel bracket, the lower part of the rear wheel bracket and the upper end of the push rod are close to each other, making the frame smaller and flat;

2. To fold or unfold the frame of the present invention, you only need to operate the push rod to rotate downward or upward, and it is easy to operate and use.

Description of the drawings

Figure 1 is a schematic three-dimensional view of the children's stroller of the present invention in an unfolded state;

Figure 2 is a side view of the children's stroller of the present invention in the unfolded state;

Figure 3 is a side view of the children's stroller of the present invention during unfolding and folding processes;

Figure 4 is a side view of the children's stroller of the present invention in a folded state;

Figure 5 is a schematic three-dimensional view of the children's stroller in a folded state according to the present invention.

In the above drawings: 11. Front wheel assembly; 12. Rear wheel assembly; 2. Front wheel bracket; 3. Rear wheel bracket; 4. Push rod; 5. Basket rod; 6. Swing bar; 7. Adapter ; 8. Seat post; 9. Connecting rod; 101. First axis; 102. Second axis; 103. Third axis; 104. Fourth axis; 105. Fifth axis; 106. Sixth axis.

Detailed ways

The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings:

Referring to Figure 1, a children's stroller includes a frame with an unfolded state and a folded state, a front wheel assembly 11 located at the front of the bottom of the frame, and a rear wheel assembly 12 located at the rear of the bottom of the frame. A locking mechanism used to lock the frame in the unfolded state. The frame includes two sets of side brackets located on the left and right sides of the stroller. Each side bracket includes a front wheel bracket 2, a rear wheel bracket 3, a push rod 4, Basket post 5, swing bar 6, seat post 8 and connecting rod 9.

In this embodiment, the upper part of the rear wheel bracket 3 is pivotally connected to the front wheel bracket 2, the lower part of the push rod 4 is pivotally connected to the upper part of the front wheel bracket 2, and the front part of the seat post 8 can both rotate relatively and It is connected with the front wheel bracket 2 or the rear wheel bracket 3 relatively slidingly along its length direction. The front part of the basket rod 5 is pivotally connected with the lower part of the front wheel bracket 2. The swing bar 6 is pivoted with the rear wheel bracket 3. The lower part of the swing rod 6 is pivotally connected to the basket rod 5, and the upper part is pivotally connected to the rear part of the seat pole 8; the two ends of the connecting rod 9 are pivotally connected to the push rod 4 and the seat pole 8 respectively. , when the frame is folded, the push rod 4 is flipped backward and folded to the rear side of the rear wheel bracket 3, and the front wheel bracket 2 and the rear wheel bracket 3 are close together in the front and rear direction. The front wheel bracket 2, the rear wheel bracket 3, the swing bar 6, and the basket rod 5 form a four-bar linkage mechanism, so that the rotation between the swing bar 6 and the rear wheel bracket 3 drives the movement between the front wheel bracket 2 and the rear wheel bracket 3. of folding or unfolding.

Specifically, the front part of the seat post 8 is provided with an adapter 7. The seat post 8 is relatively slidingly connected to the adapter 7 along its length direction. The adapter 7 is pivotally connected to the upper part or pivot axis of the front wheel bracket 2. Connected to the upper part of the rear wheel bracket 3. The front wheel bracket 2 includes a body part 21 connected to the front wheel assembly 11 and a joint part 22 fixedly arranged on the upper end of the body part 21. The upper end of the joint part 22 is rotationally connected to the lower end of the push rod 4. The lower end of the joint part 22 Rotatingly connected with the adapter 7.

As shown in Figures 2-4, the adapter 7 has a through hole, and the front part of the seat post 8 is slidably inserted into the through hole. The upper part of the front wheel bracket 2 and the upper part of the rear wheel bracket 3 are pivotally connected through the first shaft 101 , and the adapter 7 is rotatably connected to the front wheel bracket 2 or the rear wheel bracket 3 through the first shaft 101 . The upper part of the front wheel bracket 2 and the lower part of the push rod 4 are pivotally connected through the second axis 102. The lower part of the connecting rod 9 is rotationally connected with the middle part of the seat post 8 around a third axis 103. The first axis 101 is located on the second axis 102. below, thereby improving the folding efficiency between the rear wheel bracket 3 and the push rod 4.

As shown in Figure 2, when the frame is in the unfolded state, the front wheel bracket 2 and the push rod 4 on the same side extend along the same length direction, and the space between the front wheel bracket 2, the push rod 4, the seat post 8 and the connecting rod 9 Creates a triangular structure to provide stable support when the frame is deployed.

The swing bar 6 is pivotally connected to the rear wheel bracket 3 through the third axis 103. The upper part of the swing bar 6 is pivotally connected to the seat post 8 through the fourth axis 104. The lower part of the swing bar 6 is connected to the basket rod 5 through the fifth axis 105. Pivot-connected, the fifth axis 105 and the fourth axis 104 are respectively located at the front and rear sides of the rear wheel bracket 3 .

Referring to Figure 1 or 5, in this embodiment, the front wheel bracket 2 and the basket rod 5 are pivotally connected through a sixth axis 106. The sixth axis is a transverse brace connecting the front wheel brackets 2 on both sides. The basket The front end of the rod 5 is rotatably connected to the cross brace, and the basket rods 5 on both sides are located inside the front wheel bracket 2. At the same time, the basket rod 5 and the seat rod 8 are both U-shaped rod structures. The brackets are connected through the basket rod 5 and the seat post 8 . The two sets of side brackets in this embodiment are connected through the cross braces between the sixth shaft 106 , the basket rod 5 , the seat post 8 , and the rear wheel bracket 3 .

When the frame is in the unfolded state, the front wheel bracket 2 and the push rod 4 extend along the same length direction; when the frame needs to be folded, push the push rod 4 to rotate backward along the second axis 102 and move closer to the front wheel bracket 2 , the connecting rod 9 and the seat rod 8 are close to each other, and the seat rod 8 slides backward from the adapter 7; the seat rod 8 drives the swing rod 6 to move closer to the rear wheel bracket 3, and the swing rod 6 drives the basket rod 5 to the front wheel bracket 2 come together to complete the folding. When the vehicle frame needs to be unfolded, pull the push rod 4 and rotate upward to complete the unfolding in the reverse direction. The folding and unfolding operations of the vehicle frame in this embodiment are relatively simple and convenient.

When the frame is in the folded state, as shown in Figures 4 and 5, the lower part of the front wheel bracket 2, the lower part of the rear wheel bracket 3 and the upper end of the push rod 4 are close to each other, making the frame smaller and flat. Higher folding efficiency.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications made based on the spirit of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a children's shallow, includes that have expansion state and folding state's frame, locate the anterior front wheel subassembly of frame bottom, locate the rear wheel subassembly of frame bottom rear portion, be used for with the locking mechanical system of frame under the expansion state, the frame is including being located two sets of side brackets of children's shallow left and right sides, its characterized in that: each side support comprises a front wheel support, a rear wheel support, a push rod, a basket rod, a swing rod, a sitting rod and a connecting rod, wherein the upper part of the rear wheel support is in pivot connection with the front wheel support, the lower part of the push rod is in pivot connection with the upper part of the front wheel support, the front part of the sitting rod can relatively rotate and relatively slide along the length direction of the sitting rod to be connected with the front wheel support or the rear wheel support, the front part of the basket rod is in pivot connection with the lower part of the front wheel support, the swing rod is in pivot connection with the rear wheel support, the lower part of the swing rod is in pivot connection with the basket rod, the upper part of the swing rod is in pivot connection with the rear part of the sitting rod, the two ends of the connecting rod are respectively in pivot connection with the push rod and the sitting rod, and when the frame is folded, the push rod is backwards overturned and folded to the rear side of the rear wheel support, and the front wheel support is folded with the rear wheel support along the front and rear direction.

2. A stroller according to claim 1, wherein: the front part of the sitting rod is provided with an adapter, the sitting rod is connected with the adapter in a relatively sliding manner along the length direction of the sitting rod, and the adapter is pivotally connected to the upper part of the front wheel bracket or the upper part of the rear wheel bracket.

3. A stroller according to claim 2, wherein: the front wheel support comprises a body part connected with the front wheel assembly and a connector part fixedly arranged at the upper end part of the body part, the upper end part of the connector part is rotationally connected with the lower end part of the push rod, and the adapter part is pivotally connected to the lower end part of the connector part.

4. A stroller according to claim 2, wherein: the adapter has a through hole in which the front portion of the seat post slidably passes.

5. A stroller according to claim 2, wherein: the upper part of the front wheel bracket, the upper part of the rear wheel bracket and the adapter are connected together through a first shaft pivot.

6. A stroller in accordance with claim 5, wherein: the upper part of the front wheel bracket is connected with the lower part of the push rod through a second shaft pivot, and the first shaft is positioned below the second shaft.

7. A stroller according to claim 1, wherein: when the frame is in a unfolding state, the front wheel bracket and the push rod on the same side extend along the same length direction, and a triangle structure is formed among the front wheel bracket, the push rod, the sitting rod and the connecting rod.

8. A stroller according to claim 1, wherein: the swing rod is connected with the rear wheel bracket through a third shaft pivot, the upper part of the swing rod is connected with the sitting rod through a fourth shaft pivot, the lower part of the swing rod is connected with the basket rod through a fifth shaft pivot, and the fifth shaft and the fourth shaft are respectively positioned on the front side and the rear side of the rear wheel bracket.

9. A stroller according to claim 1, wherein: the basket rod and the sitting rod are of U-shaped rod structures, and side brackets on two sides are connected with the sitting rod through the basket rod.

10. A stroller according to claim 1, wherein: the front wheel support, the rear wheel support, the swing rod and the basket rod form a four-bar linkage mechanism.