CN206465990U - Children trolley - Google Patents

Abstract

The utility model discloses a stroller for children, which comprises a stroller frame in unfolded and folded states, a front wheel assembly and a rear wheel assembly arranged at the bottom of the cart frame, and a mechanism for locking the cart frame in the unfolded state. The locking mechanism, the trolley frame includes a front bracket, a rear bracket whose upper part is rotatably connected to the upper part of the front bracket, a push rod whose lower part is rotatably connected to the upper part of the rear bracket, a seat post that is rotatably connected to the rear bracket, and one end of which is connected to the rear bracket. The first link that is rotatably connected to the front bracket, the second link that is rotatably connected to the other end of the first link, the third link that is rotatably connected to the push rod at one end, the side wall bar, the second link The rod is rotatably connected to the rear bracket, the other end of the third link is rotatably connected to the second link, and the side bar is rotatably connected to the seat post and the second link respectively. The baby stroller has a simple structure, can be folded, and the folding operation is convenient, and the folded baby stroller has a compact structure, a small volume, and is easy to carry and store.

Description

stroller

technical field

The utility model relates to the technical field of children's products, in particular to a children's stroller.

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 and a rear wheel assembly arranged at the bottom of the stroller frame, and is used to lock the stroller frame in the unfolded state down locking mechanism. There are many types of existing children's strollers, the number of rods of the stroller frame is different, and the connection positions between the rods are different, so the folding principles and folding methods are different, and the folding effects are also different.

Contents of the invention

The purpose of the utility model is to provide a foldable children's stroller with a smaller volume after being folded, aiming at the deficiencies of the prior art.

For achieving the above object, the technical scheme that the utility model adopts is:

A stroller for children, comprising a stroller frame with unfolded state and folded state, a front wheel assembly arranged at the bottom front part of the pushcart frame, a rear wheel assembly arranged at the bottom rear part of the pushcart frame a wheel assembly, a locking mechanism for locking said stroller frame in an unfolded state, said stroller frame comprising:

a front bracket for installing the front wheel assembly;

The rear bracket is used to install the rear wheel assembly, and the upper part of the front bracket is rotatably connected to the upper part of the rear bracket through a first shaft;

a push rod, the lower part of the push rod is rotatably connected to the upper part of the rear bracket through a second shaft;

a seat post, the seat post is rotatably connected to the rear bracket through a third shaft;

a first connecting rod, one end of the first connecting rod is rotatably connected to the front bracket through a fourth shaft;

The second connecting rod, one end of the second connecting rod is rotatably connected with the other end of the first connecting rod through the fifth axis, and the second connecting rod and the rear bracket are rotatable through the sixth axis connect;

A third connecting rod, one end of the third connecting rod is rotationally connected with the push rod through the seventh axis, and the other end of the third connecting rod is rotationally connected with the second connecting rod through the eighth axis connect;

A side wall rod, the side wall rod is rotatably connected with the seat post through a ninth axis, and is rotatably connected with the second connecting rod through a tenth shaft.

Preferably, when the stroller is in an unfolded state, both the seat post and the first connecting rod extend along the front-rear direction, and the seat post is located above the first connecting rod.

Preferably, the second link includes a first strut and a second strut, when the stroller is in the unfolded state, the first strut extends along the front-to-rear direction, and the second strut extends along the up-down direction. direction, the lower end of the second rod is fixedly connected to the first rod, and the front end of the first rod is connected to the other end of the first connecting rod through the fifth shaft. Rotationally connected, the upper end of the second support rod is rotatably connected to the other end of the third connecting rod through the eighth shaft.

Further, when the stroller is in the unfolded state, the first connecting rod and the first support rod extend along the same straight line, so that the front support, the rear support, and the first support rod A triangular structure is formed between the first connecting rod and the first connecting rod.

Further, when the stroller is in the unfolded state, the third connecting rod and the second support rod extend along the same straight line, so that the push rod, the rear bracket, and the second support rod A triangular structure is formed between the third connecting rod and the third connecting rod.

Preferably, the rear bracket includes a rear strut arranged obliquely from the rear to the front and a connecting piece fixedly connected to the upper end of the rear strut, the upper part of the front bracket and the lower end of the connecting piece pass through The first shaft is rotatably connected, and the lower part of the push rod is rotatably connected to the upper end of the connecting piece through the second shaft.

Further, when the baby stroller is in the unfolded state, the front bracket, the connecting piece, and the push rod extend along the same straight line.

Preferably, the central axes of the eighth shaft and the tenth shaft extend along the same straight line.

Preferably, when the stroller is in the unfolded state, on the front support, the first axis is located above the fourth axis; on the rear support, the third axis is located above the above the sixth axis, and the third axis is located above the first axis and below the second axis; on the push rod, the second axis is located below the seventh axis; On the seat post, the third axle is located behind the ninth axle.

Preferably, a first four-bar linkage mechanism is formed between the front bracket, the rear bracket, the first connecting rod, and the second connecting rod, and the push rod, the rear bracket, and the second A second four-bar linkage mechanism is formed between the connecting rod and the third connecting rod, and a third four-bar linkage mechanism is formed between the seat post, the rear bracket, the second connecting rod, and the side wall bar , the locking mechanism is disposed between any two components that are rotationally connected in the first four-bar linkage mechanism, the second four-bar linkage mechanism and the third four-bar linkage mechanism.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: the children's stroller of the utility model has a simple structure, can be folded, and the folding operation is convenient, and the folded children's stroller has a compact structure and a small volume , easy to carry and store.

Description of drawings

Accompanying drawing 1 is the perspective view of the children's stroller of the present utility model in the expanded state;

Accompanying drawing 2 is the side view of the children's stroller of the present utility model in the unfolded state;

Accompanying drawing 3 is the side view of the children's stroller of the present invention in the folding process;

Accompanying drawing 4 is the side view of the children's stroller of the present invention in a folded state.

Among them: 1. Cart frame; 11. Front support; 12. Rear support; 121. Rear support rod; 122. Connector; 13. Push rod; 14. Seat post; 15. First link 16. Second Connecting rod 161, the first support rod; 162, the second support rod; 17, the third connecting rod 18, side wall rod A, the first shaft; B, the second shaft; C, the third shaft; D, the fourth shaft ; E, fifth axis; F, sixth axis; G, seventh axis; H, eighth axis; I, ninth axis; J, tenth axis; 2, front wheel assembly; 3, rear wheel assembly.

detailed description

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, the children's stroller of the present invention includes a stroller frame 1 in an unfolded state and a folded state, a front wheel assembly 2 arranged at the bottom front of the stroller frame 1, The rear wheel assembly 3 at the bottom rear portion of the cart frame 1 is a locking mechanism for locking the cart frame 1 in the unfolded state.

The cart frame 1 comprises a front bracket 11, a rear bracket 12, a push rod 13, a seat post 14, a first connecting rod 15, a second connecting rod 16, a third connecting rod 17 and a side wall bar 18, and the front bracket 11 is used for The front wheel assembly 2 is installed, and the rear support 12 is used to install the rear wheel assembly 3. When the cart frame 1 is in the unfolded state, the front support 11 and the push rod 13 are all inclined upward from the front to the rear, and the rear support 12 is arranged from the back to the front. Tilted upward, the push rod 13 has a U-shaped structure with the opening facing downward, the seat post 14 and the first connecting rod 15 both extend in the front and rear direction, and the seat post 14 is arranged above the first connecting rod 15, and the seat post 14 is open The U-shaped structure facing forward, the side wall rod 18 is a U-shaped structure with the opening facing upwards.

The upper part of the front bracket 11 is rotatably connected with the upper part of the rear bracket 12 through the first axis A, the lower part of the push rod 13 is rotatably connected with the upper part of the rear bracket 12 through the second axis B, and the seatpost 14 and the rear bracket 12 are connected through the third axis. The axis C is rotatably connected, one end of the first connecting rod 15 is rotatably connected to the front bracket 11 through the fourth axis D, and the other end of the first connecting rod 15 is rotatably connected to the second connecting rod 16 through the fifth axis E , the second link 16 is rotatably connected to the rear bracket 12 via the sixth axis F, one end of the third link 17 is rotatably connected to the push rod 13 via the seventh axis G, and the other end of the third link 17 is rotatably connected to the The second connecting rod 16 is rotatably connected by the eighth axis H, the side wall rod 18 is rotatably connected with the seat post 14 by the ninth axis I, and is rotatably connected with the second connecting rod 16 by the tenth axis J. In this way, a first four-bar linkage mechanism is formed between the front bracket 11, the rear bracket 12, the first connecting rod 15 and the second connecting rod 16, and the push rod 13, the rear bracket 12, the second connecting rod 16 and the third connecting rod A second four-bar linkage is formed between the rods 17 , and a third four-bar linkage is formed between the seat post 14 , the rear bracket 12 , the second link 16 and the side wall rod 18 .

When the stroller is in the unfolded state, on the front bracket 11, the first axis A is above the fourth axis D, on the rear bracket 12, the third axis C is above the first axis A, and on the second axis B below, while the third axis C is above the sixth axis F, on the pushrod 13 the second axis B is below the seventh axis G and on the seat post 14 the third axis C is behind the ninth axis I.

In this embodiment, the central axes of the eighth axis H and the tenth axis J extend along the same straight line, that is, the three components of the second connecting rod 16 , the third connecting rod 17 and the side wall rod 18 are coaxially rotatably connected.

In a specific embodiment, the second link 16 includes a first strut 161 and a second strut 162. When the stroller is in an unfolded state, the first strut 161 extends along the front-to-back direction and is connected with the first link. 15 extends along the same straight line direction, the second strut 162 extends along the up and down direction, and extends along the same straight line direction as the third connecting rod 17, the lower end of the second strut 162 is fixedly connected to the first strut 161, in this embodiment In this example, the sixth axis F is set at the joint between the second pole 162 and the first pole 161, and the front end of the first pole 161 is rotatably connected to the other end of the first connecting rod 15 through the fifth axis E. , the upper end of the second rod 162 is rotatably connected to the other end of the third connecting rod 17 via the eighth axis H. The first strut 161 is a U-shaped structure with an opening facing forward, and the second struts 162 are respectively arranged on both sides of the U-shaped structure.

A specific embodiment, the rear bracket 12 includes a rear support rod 121 and a connecting piece 122, the rear support rod 121 is arranged inclined upward from the back to the front, the rear wheel assembly 3 is installed on the lower part of the rear support rod 121, and the connecting piece 122 is fixedly connected At the upper end of the rear strut 121, the upper part of the front bracket 11 is rotatably connected to the lower end of the connector 122 through the first axis A, and the lower part of the push rod 13 is rotatably connected to the upper end of the connector 122 through the second axis B. . When the stroller is in the unfolded state, the front bracket 11, the connecting piece 122 and the push rod 13 extend along the same straight line. In this embodiment, the rear strut 121 intersects with the connecting member 122 to form a T-shaped structure.

The locking mechanism can be arranged between any two parts that are rotationally connected in the first four-bar linkage mechanism, the second four-bar linkage mechanism and the third four-bar linkage mechanism. In this embodiment, the locking mechanism is arranged between the rear bracket 12 and the third four-bar linkage mechanism. Between the push rods 13, the specific structure of the locking mechanism is not the technical point to be protected by this patent, and the structure in the prior art can be adopted.

When the stroller is in the unfolded state, as shown in Figure 1 and Figure 2, the locking mechanism is in the locked state, the front bracket 11, the connecting piece 122 and the push rod 13 extend along the same straight line, the first connecting rod 15 and the first support Rod 161 extends along the same straight line direction, and the second strut 162 and the third connecting rod 17 extend along the same straight line direction, forming a triangle between the front bracket 11, the rear bracket 12, the first connecting rod 15 and the first strut 161 structure, a triangular structure is formed between the push rod 13, the rear bracket 12, the second strut 162 and the third connecting rod 17, and the push rod 13, the connector 122, the front bracket 11, the first connecting rod 15, the first A triangular structure is also formed between the strut 161, the second strut 162 and the third connecting rod 17, so that the child's stroller has better rigidity when it is in the unfolded state, so that it can be stably in the unfolded state, improving the stability of the child's stroller. Safety performance when using the cart.

When the stroller is folded, the locking mechanism is first unlocked, and then the push rod 13 is pressed down to turn clockwise around the second axis B and close to the rear bracket 12. When the push rod 13 is turned over, the third connecting rod 17 is turned downward. Move, thereby driving the second link 16 to turn clockwise around the sixth axis F, so that the side wall rod 18 is also turned clockwise. When the second link 16 turns over, the first link 15 pulls the front bracket 11 around the first axis A Turn counterclockwise and get close to the rear bracket 12, when the side wall rod 18 is turned over, drive the seat post 14 to turn clockwise around the third axis C and get closer to the rear bracket 12 until the rods that make up the stroller frame 1 are close together , and the final fold is shown in Figure 4. During the folding process of the stroller, the front wheel assembly 2 and the rear wheel assembly 3 are always supported on the ground, so that the folding operation of the stroller is very convenient, and the folded stroller has a compact structure and a small volume, which is convenient Carry and store.

When the baby stroller needs to be unfolded from the folded state, it is only necessary to pull up the push rod 13 to make the rods that make up the stroller frame 1 rotate in the opposite direction as when it is folded until the pushrod frame 1 Fully extended, the locking mechanism locks again.

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 child stroller, comprising a stroller frame with an unfolded state and a folded state, a front wheel assembly disposed at the bottom front portion of the stroller frame, and a rear wheel assembly disposed at the bottom rear portion of the stroller frame The rear wheel assembly, the locking mechanism for locking the cart frame in the unfolded state, is characterized in that: the cart frame includes: a front bracket for installing the front wheel assembly; The rear bracket is used to install the rear wheel assembly, and the upper part of the front bracket is rotatably connected to the upper part of the rear bracket through a first shaft; a push rod, the lower part of the push rod is rotatably connected to the upper part of the rear bracket through a second shaft; a seat post, the seat post is rotatably connected to the rear bracket through a third shaft; a first connecting rod, one end of the first connecting rod is rotatably connected to the front bracket through a fourth shaft; The second connecting rod, one end of the second connecting rod is rotatably connected with the other end of the first connecting rod through the fifth axis, and the second connecting rod and the rear bracket are rotatable through the sixth axis connect; A third connecting rod, one end of the third connecting rod is rotationally connected with the push rod through the seventh axis, and the other end of the third connecting rod is rotationally connected with the second connecting rod through the eighth axis connect; A side wall rod, the side wall rod is rotatably connected with the seat post through a ninth axis, and is rotatably connected with the second connecting rod through a tenth shaft. 2. The stroller according to claim 1, wherein when the stroller is in the unfolded state, both the seat post and the first connecting rod extend along the front and rear directions, and the seat post is located at Above the first connecting rod. 3. The stroller according to claim 1, wherein the second connecting rod comprises a first pole and a second pole, and when the stroller is in an unfolded state, the first pole The rod extends in the front-rear direction, the second rod extends in the up-down direction, the lower end of the second rod is fixedly connected to the first rod, and the front end of the first rod is connected to the first rod. The other end of a connecting rod is rotatably connected through the fifth shaft, and the upper end of the second support rod is rotatably connected with the other end of the third connecting rod through the eighth shaft. 4. The stroller according to claim 3, wherein when the stroller is in the unfolded state, the first connecting rod and the first support rod extend along the same straight line, so that the A triangular structure is formed among the front support, the rear support, the first support rod and the first connecting rod. 5. The children's stroller according to claim 3, wherein when the children's stroller is in the unfolded state, the third connecting rod and the second support rod extend along the same straight line, so that the A triangular structure is formed among the push rod, the rear bracket, the second support rod and the third connecting rod. 6. The children's stroller according to claim 1, characterized in that: the rear support includes a rear support rod inclined upward from the rear to the front and a connecting piece fixedly connected to the upper end of the rear support rod, the The upper part of the front bracket is rotatably connected to the lower end of the connecting piece through the first shaft, and the lower part of the push rod is rotatably connected to the upper end of the connecting piece through the second shaft. 7 . The stroller for children according to claim 6 , wherein when the stroller is in the unfolded state, the front bracket, the connecting piece and the push rod extend along the same straight line. 8 . 8 . The stroller for children according to claim 1 , wherein the central axes of the eighth shaft and the tenth shaft extend along the same straight line. 9. The children's stroller according to claim 1, characterized in that: when the children's stroller is in the unfolded state, on the front bracket, the first shaft is located above the fourth shaft; On the rear bracket, the third shaft is located above the sixth shaft, and the third shaft is located above the first shaft and below the second shaft; on the push rod, The second axis is located below the seventh axis; on the seatpost, the third axis is located behind the ninth axis. 10. The children's stroller according to claim 1, characterized in that: a first four-bar linkage mechanism is formed between the front bracket, the rear bracket, the first connecting rod, and the second connecting rod, A second four-bar linkage mechanism is formed between the push rod, the rear bracket, the second connecting rod, and the third connecting rod, and the seat post, the rear bracket, the second connecting rod, A third four-bar linkage mechanism is formed between the side wall bars, and the locking mechanism is arranged in any phase of the first four-bar linkage mechanism, the second four-bar linkage mechanism, and the third four-bar linkage mechanism. Between two parts that are connected by rotation.