CN104192191A - Child cart - Google Patents

Abstract

The invention discloses a stroller for children, wherein the stroller frame includes a front bracket, a rear bracket, a push rod, and a seatpost, the upper part of the front bracket is connected to the upper part of the rear bracket in rotation, and the upper part of the front bracket is pivotally connected with a The first slider, the first slider is arranged on the push rod to slide up and down along the length extension direction of the push rod, the seat post extends along the front and rear direction, the front part of the seat post is pivotally connected to the push rod, the seat post and the push rod The pivot connection point on the pushrod is located below the first slider, the rear of the seatpost is pivotally connected to the rear bracket, the seatpost is also pivotally connected to the second slider, and the second slider is along the front bracket. The length extending direction is arranged on the front bracket slidingly up and down. By pushing down the push rod or pulling up the push rod, the rods on the cart frame can be relatively close or relatively unfolded, so that the cart frame can be folded or unfolded correspondingly. The operation is simple and convenient, and the folded structure Compact and self-standing on the ground.

Description

stroller

the

technical field

The invention 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 wheel assembly arranged at the bottom of the stroller frame, and a wheel assembly arranged on the stroller frame to lock the stroller frame in the unfolded position the locking mechanism. There are many types of existing cart frames, and the number of rods is also different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods of the cart frames are also different.

content of invention

The object of the present invention is to provide a children's stroller with simple structure, convenient operation and small volume after folding.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A stroller for children, comprising a stroller frame having an unfolded state and a folded state, a wheel assembly arranged at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state, The cart frame includes a front bracket, a rear bracket, a push rod, and a seatpost, the upper part of the front bracket is rotatably connected to the upper part of the rear bracket, and the upper part of the front bracket is pivotally connected with a first slide The first sliding member is arranged on the push rod to slide up and down along the length extension direction of the push rod, the seat post extends in the front and rear direction, and the front part of the seat post is pivotally connected to the The pivot connection point of the seatpost to the pushrod is located below the first slider on the pushrod, the rear of the seatpost is pivotally connected to the rear bracket , the seat post is also pivotally connected with a second sliding member, and the second sliding member is provided on the front support so as to slide up and down along the length extension direction of the front support.

Preferably, the upper part of the rear bracket is pivotally connected to the front bracket by a first shaft, and the first slider is pivotally connected to the front bracket by a second shaft, and the second shaft is pivotally connected to the front bracket by a second shaft. The front bracket is located above the first shaft.

Further, the front bracket includes a front support rod extending obliquely in the up-down direction, and a connection part formed by extending upward from the upper part of the front support rod obliquely, and the first sliding member is pivotally connected to the upper end of the connection part , the second sliding member is slidably arranged on the front strut.

Furthermore, the upper part of the rear support is pivotally connected to the lower end of the connecting part through the first shaft, and when the cart frame is in the folded state, the rear support and the front support rod are mutually move closer.

Preferably, the upper part of the front bracket and the upper part of the rear bracket are respectively pivotally connected to the first sliding member.

Preferably, the stroller frame includes side brackets respectively located on left and right sides, and each side bracket includes the front bracket, the rear bracket, the push rod and the seat post, and the The cart frame also includes a strut assembly connected between the side brackets on both sides and foldable along the left and right directions of the cart frame.

Further, the brace assembly includes a cross brace assembly, and the cross brace assembly includes two braces that intersect each other and are pivotally connected at the intersection, the braces extend along the front-to-rear direction, and the rear of the braces The part is rotatably connected to the rear bracket, and the front part of the strut is rotatably connected to the push rod or the seat post.

Furthermore, the front portion of the strut is rotatably connected to the push rod by a connecting member located on the push rod at a pivot connection point between the seat post and the push rod below.

Further, the strut assembly also includes an auxiliary support assembly arranged between the rear brackets on both sides, which can be folded in the left and right directions.

Preferably, both the first sliding member and the second sliding member are sliding sleeves.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: In the children's stroller of the present invention, the number of rods on the stroller frame is small, the structure is simple, and the push rod can be pushed down or pulled up. That is, the rods on the stroller frame are relatively close or relatively unfolded, so that the stroller frame is folded or unfolded correspondingly. The unfolding and folding operations of the trolley frame are very convenient, the trolley frame in the unfolded state has a simple appearance, and the folded trolley frame has a compact structure, takes up little space, can stand on the ground independently, and is convenient for storage and carrying.

Description of drawings

Accompanying drawing 1 is the side view of the children's stroller of the present invention in the unfolded state;

Accompanying drawing 2 is the perspective view of the children's stroller of the present invention in the unfolded state;

Accompanying drawing 3 is the side view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 4 is the perspective view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 5 is the side view of the stroller of the present invention in a folded state;

Accompanying drawing 6 is the perspective view of the stroller of the present invention in a folded state.

Among them: 1. Front support; 11. Front support rod; 12. Connecting part; 2. Rear support; 3. Push rod; 4. Seat post; 5. First sliding member; 6. Second sliding member; 7. Cross Support assembly; 71, 72, strut; 73, connector; 8, attached support assembly; 9, first shaft; 10, second shaft; 20, front wheel; 30, rear wheel.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to the children's stroller shown in Figures 1 to 6, it includes a stroller frame with an unfolded state and a folded state, a wheel assembly arranged at the bottom of the stroller frame, and used to lock the stroller frame in the unfolded state locking mechanism (not shown). The stroller frame includes side brackets respectively located on the left and right sides, and a strut assembly connected between the side brackets on both sides.

Referring to Fig. 1 and Fig. 2, the side brackets on each side include a front bracket 1, a rear bracket 2, a push rod 3 and a seat post 4. The wheel assembly includes a front wheel 20 located at the bottom of the front support 1 and a rear wheel 30 located at the bottom of the rear support 2 . The upper part of the front bracket 1 is rotatably connected with the upper part of the rear bracket 2, and the upper part of the front bracket 1 is pivotally connected with a first slider 5, which slides up and down along the length extension direction of the push rod 3 and is arranged on the push rod 3. on pole 3. The seat post 4 extends in the front-to-rear direction, the front part of the seat post 4 is pivotally connected to the push rod 3, and the pivot connection point between the seat post 4 and the push rod 3 is located on the push rod 3 below the first slider 5 The rear part of the seat post 4 is pivotally connected to the rear bracket 2, and the middle part of the seat post 4 is also pivotally connected to a second slider 6, which is arranged to slide up and down along the length extension direction of the front bracket 1. on the front bracket 1. Both the above-mentioned first sliding member 5 and the second sliding member 6 can adopt sliding sleeves.

In this way, on the side brackets on each side, a slider crank mechanism is formed between the front bracket 1 , the push rod 3 and the seat post 4 . By driving the first sliding part 5 to slide up and down along the push rod 3, and simultaneously driving the second sliding part 6 to slide up and down along the front bracket 1, the rods on the side bracket on one side can be mutually expanded or retracted, thereby correspondingly Allows the stroller frame to unfold or collapse.

Here, the upper part of the rear bracket 2 is pivotally connected to the front bracket 1 through the first shaft 9, and the first slider 5 is pivotally connected to the upper part of the front bracket 1 through the second shaft 10, and the first shaft 9 is connected to the second shaft 9. The axes of the shafts 10 extend along the left and right directions of the cart frame, and the second shaft 10 is located above the first shaft 9 on the front support 1 . Referring to the drawings, in this embodiment, the front bracket 1 includes a front strut 11 extending obliquely in the up-down direction, an arc-shaped connecting portion 12 formed by extending obliquely upward from the upper part of the front strut 11, and a first sliding member 5 is pivotally connected to the upper end of the connecting part 12 through the second shaft 10, and the upper part of the rear bracket 2 is pivotally connected to the lower end of the connecting part 12 through the first shaft 9. In this way, when the stroller frame is unfolded, the push rods 3 in the side brackets on each side are roughly parallel to the front struts 11; move, so that the push rod 3 and the front strut 11 are separated up and down to form a staggered layer, and the rear support 2 and the front strut 11 can move closer to each other at the same time.

Of course, the upper part of the front support 1 and the upper part of the rear support 2 can also be pivotally connected to the first sliding member 5, or after the front support 1 is pivotally connected to the rear support 2, the first sliding member 5 The pivot is connected to the upper part of the rear bracket 2 , and the first sliding member 5 is arranged on the push rod 3 . Although such a connection arrangement meets the folding requirements of the pushcart, the folded structure of the pushcart with this structure is not compact enough.

The strut assembly includes a cross brace assembly 7 and an additional brace assembly 8. The cross brace assembly 7 includes two braces 71, 72 that cross each other and are pivotally connected at the intersection. The length directions of these two braces 71, 72 are equal. Extending along the front-to-back direction, the front parts of the struts 71, 72 are respectively rotatably connected to the push rods 3 or the seat post 4 on both sides, and the rear parts of the struts 71, 72 are respectively rotatably connected to the rear brackets 2 on both sides. In this embodiment, the front parts of the struts 71, 72 are rotatably connected to the push rod 3 through the connecting piece 73, and the connecting piece 73 is located on the pivot of the seat post 4 and the push rod 3 on the push rod 3 Below the connection point. The supporting component 8 can be folded between the rear brackets 2 on both sides along the left and right direction of the cart frame. The supporting component 8 can adopt the flat supporting component commonly used in this field, and its structure will not be repeated here. repeat.

On the cart frame, the locking mechanism is the locking structure attached to the supporting assembly 8. When the cart frame is unfolded, by locking the supporting assembly 8, the entire cart frame can be in a stable unfolded state. . Referring to Fig. 1 and Fig. 2, when the stroller is in the unfolded state, the cross support assembly 7 and the additional support assembly 8 are fixedly supported between the side supports on both sides, and on each side support, the first sliding member 5 is fixed relative to the push rod 3, the second slider 6 is fixed relative to the front bracket 1, the seatpost 4 is fixedly supported between the front bracket 1, the rear bracket 2 and the push rod 3, the front support rod 11 on the front bracket 1 is connected with the push rod The rods 3 are parallel to each other.

When the cart frame needs to be folded, first unlock the supporting assembly 8 and push down the push rod 3, as shown in Figure 3 and Figure 4, the first sliding member 5 slides up along the push rod 3, and the lower part of the push rod 3 Downward, driving the front part of the seat post 4 to go down, the front part of the seat post 4 goes down and drives the second slider 6 to slide down along the front bracket 1, and drives the rear bracket 2 to gradually move closer to the front bracket 1; the lower part of the push rod 3 The downward movement drives the front parts of the struts 71 and 72 to descend simultaneously, and the relative rotation between the struts 71 and 72 makes the side brackets on both sides gradually move closer along the left and right directions. Finally, the front bracket 1, the rear bracket 2, the push rod 3, and the seat post 4 are moved closer to each other, and the cross brace assembly 7 and the additional brace assembly 8 are gathered between the side brackets on both sides, forming a shape as shown in Fig. 5 and Fig. 6 The structure is compact and takes up less space. This moment, the cart frame can rely on the bottom of the push rod 3 and the front wheel 20 to stand on the ground, which is convenient for storage and carrying.

When the cart frame needs to be unfolded for use, the push rod 3 is pulled up so that the first sliding member 5 slides down along the push rod 3, and the lower part of the push rod 3 moves upward to drive the front part of the seat post 4 and the front parts of the struts 71 and 72. The second slider 6 moves upward along the front bracket 1, driving the front bracket 1, the rear bracket 2, the push rod 3 and the seat post 4 to gradually expand relative to each other, and the support rods 71 and 72 rotate relatively to make the side brackets on both sides It is gradually deployed along the left and right directions, and the supporting assembly 8 is then deployed along the left and right directions to stand between the rear brackets 2 on both sides. Until each bar member on the cart frame is relatively expanded, the attached support assembly 8 is locked, and the cart frame can be in a stable unfolded state. The folding and unfolding operations of the cart frame are very convenient.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention, and its purpose is to enable those familiar with this technology 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 (10)

1. A child stroller comprising a stroller frame having an unfolded state and a folded state, a wheel assembly disposed at the bottom of the stroller frame, a locking mechanism for locking the stroller frame in the unfolded state mechanism, characterized in that: the cart frame includes a front bracket, a rear bracket, a push rod, and a seatpost, the upper part of the front bracket is rotatably connected to the upper part of the rear bracket, and the upper part of the front bracket pivots The shaft is connected with a first slider, and the first slider is arranged on the push rod to slide up and down along the length extension direction of the push rod. The seat post extends along the front and rear directions, and the front part of the seat post pivotally connected to the push rod, the pivot connection point of the seat post to the push rod is located on the push rod below the first slider, the rear of the seat post is pivotally connected On the rear bracket, a second sliding piece is pivotally connected to the seat post, and the second sliding piece is provided on the front bracket so as to slide up and down along the length extension direction of the front bracket. 2. The stroller according to claim 1, wherein the upper part of the rear frame is pivotally connected to the front frame by a first shaft, and the first slider is pivotally connected by a second shaft On the front frame, the second shaft is located above the first shaft on the front frame. 3. The children's stroller according to claim 2, wherein the front bracket includes a front support rod extending obliquely in the up-down direction, and a connecting portion formed by extending upward from the upper part of the front support rod obliquely, the The first sliding part is pivotally connected to the upper end of the connecting part, and the second sliding part is slidably arranged on the front support rod. 4. The children's stroller according to claim 3, characterized in that: the upper part of the rear bracket is pivotally connected to the lower end of the connecting part through the first shaft, when the stroller frame is in the folded state , the rear support and the front strut move closer to each other. 5 . The stroller for children according to claim 1 , characterized in that: the upper part of the front frame and the upper part of the rear frame are respectively pivotally connected to the first sliding member. 6 . 6. The children's stroller according to claim 1, wherein the stroller frame includes side brackets respectively located on the left and right sides, and the side brackets on each side include the front bracket, the rear bracket, and the rear bracket. The bracket, the push rod and the seat post, the stroller frame also includes a strut assembly connected between the side brackets on both sides and can be folded along the left and right directions of the stroller frame. 7. The children's stroller according to claim 6, wherein the brace assembly comprises a cross brace assembly, and the cross brace assembly includes two brace rods which intersect each other and are pivotally connected at the intersection, so that The strut extends along the front-rear direction, the rear portion of the strut is rotatably connected to the rear bracket, and the front portion of the strut is rotatably connected to the push rod or the seat post. 8. The stroller according to claim 7, characterized in that: the front part of the strut is rotatably connected to the push rod through a connecting piece, and the connecting piece is located on the push rod on the push rod. below the pivotal connection point between the seatpost and said pushrod. 9 . The stroller for children according to claim 6 , wherein the strut assembly further includes an auxiliary support assembly disposed between the rear supports on both sides, which can be folded in left and right directions. 10 . 10. The stroller for children according to claim 1, characterized in that: both the first sliding member and the second sliding member are sliding sleeves.