CN104670291B - Children trolley - Google Patents

Abstract

The invention discloses a stroller for children, wherein the stroller frame includes side brackets respectively located on the left and right sides, and a strut assembly arranged between the side brackets on both sides, which can be folded and unfolded laterally, and each side bracket includes A front bracket, a push rod whose lower part is pivotally connected with the front bracket, a rear bracket whose upper part is pivotally connected to the push rod, and a seat post extending in the front and rear direction, the front end of the seat post is rotatably connected to the front bracket, the seat The rear end of the rod is rotatably connected to the rear bracket. The side bracket also includes a support rod. The front end of the support rod is rotatably connected to the upper part of the front bracket or the lower part of the push rod. The sliding member is slidably arranged on the rear support along the length extension direction of the rear support. The children's stroller has a simple structure, few rods, convenient folding and unfolding operations, and the stroller is easy to push and use when unfolded, and the folded structure is compact and the volume is small, so it can be conveniently stored and carried.

Description

stroller

technical field

The invention relates to a stroller for children, in particular to a stroller for children that can be folded in two directions.

Background technique

In the prior art, the structures of the children's strollers are various, and the structures of the children's strollers are various, and correspondingly the number of rods on the frame of the carts and the connection relationship of the rods are also different, resulting in the The principles of folding and unfolding are also different. How to simplify the structure of the cart frame, simplify the folding and unfolding operations of the cart frame, and reduce the folded volume on the premise of ensuring the good stability and normal performance of the cart is a matter for those skilled in the art. A goal to keep pursuing.

Contents of the invention

The object of the present invention is to provide a child stroller which is simple in structure and can be folded in two directions.

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 side brackets respectively located on the left and right sides, and a strut assembly arranged between the side brackets on both sides that can be folded and unfolded horizontally. The side brackets on each side include a front bracket, a lower part and a a push rod pivotally connected to the front bracket, a rear bracket whose upper part is pivotally connected to the push rod, and a seat post extending in the front-rear direction, the front end of the seat post is rotatably connected to the front bracket, The rear end of the seat post is rotatably connected to the rear bracket, the side bracket also includes a support rod, and the front end of the support rod is rotatably connected to the upper part of the front bracket or the lower part of the push rod, The rear end of the support rod is rotatably connected with a slider, and the slider is provided on the rear bracket to slide along the length extension direction of the rear bracket.

Preferably, the brace assembly includes a rear cross brace assembly disposed between the rear brackets on both sides, and the rear cross brace assembly includes two rear braces that intersect each other and are pivotally connected at the intersection, each One end of each of the rear struts is pivotally connected to the rear bracket on one side, and the other end is pivotally connected to the slider.

Further, one end of the rear support rod is pivotally connected to the rear support through a rotating shaft, and the rotating shaft on the rear support on this side is located below the sliding member.

Preferably, the front end of the support rod, the lower end of the push rod and the upper end of the front bracket are pivotally connected together.

Preferably, the front end of the support rod is located between the front end of the seatpost and the upper end of the rear bracket.

Preferably, the rear end of the seatpost is rotatably connected to the rear bracket through a connecting piece, and the connecting piece is located below the sliding piece on the rear bracket.

Preferably, the slider is a slider slidably provided on the rear bracket, and the rear bracket is provided with a slide groove along its length extending direction for providing the slider with a sliding guide up and down.

Preferably, the locking mechanism is a locking member provided between the sliding member and the rear bracket for locking the two.

Preferably, a push rod is rotatably provided on the top of each push rod, and the push rods on both sides are pivotally connected.

Preferably, the stroller frame further includes front armrests detachably connected between the upper parts of the front brackets on both sides.

Preferably, the lower ends of the front brackets on both sides are rotatably connected through an adapter, and the wheel assembly includes a front wheel arranged at the bottom of the adapter, and two rear wheels arranged at the bottom of the rear brackets on both sides. wheel.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: The children's stroller of the present invention has a simple structure, a small number of rods, and the operation of folding and unfolding is very convenient. Lightweight, compact structure and small volume after folding, it can be stored and carried conveniently.

Description of drawings

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

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

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

Accompanying drawing 4 is the side view of the stroller of the present invention in a folded state;

Among them: 1. Front bracket; 2. Push rod; 3. Rear bracket; 31. Chute; 4. Seat post; 5. Support rod; 6. Slider (slider) 7. Rear cross brace assembly; 71. Strut; 72, rotating shaft; 8, front armrest; 9, push bar; 11, adapter; 12, connecting piece; 13, pin shaft; 14, canopy rod; ,rear wheel.

detailed description

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 4, it includes a stroller frame with an unfolded state and a folded state, and a wheel assembly located at the bottom of the stroller frame for locking the stroller frame in the unfolded state the locking mechanism. The trolley frame includes side brackets located on the left and right sides respectively, and a strut assembly arranged between the side brackets on both sides and capable of being folded and unfolded laterally.

Referring to the drawings, the side brackets on each side include a front bracket 1, a push rod 2, a rear bracket 3, a seat post 4 and a support rod 5. The upper part of the front bracket 1 is pivotally connected to the lower part of the push rod 2, the upper part of the rear bracket 3 is pivotally connected to the push rod 2, the seat post 4 extends in the front-rear direction, and the front end of the seat post 4 is rotatably connected by a joint 15. On the upper part of the front bracket 1 , the rear end of the seatpost 4 is rotatably connected to the rear bracket 3 through the connecting piece 12 .

The support rod 5 also extends along the front-to-rear direction, and the front end of the support rod 5 is rotatably connected to the top of the front bracket 1 or to the bottom of the push rod 2 rotatably. between the upper ends. In this embodiment, the front end of the support rod 5 , the upper end of the front bracket 1 and the lower end of the push rod 2 are pivotally connected together. The rear end of the support rod 5 is rotatably connected with a sliding member 6 , and the sliding member 6 is slidably arranged on the rear support 3 along the length extension direction of the rear support 3 . Slider 6 can adopt sliding sleeve, also can adopt as the slide block in the present embodiment, is provided with the chute 31 that is used to provide guide when slide block 6 slides up and down along its length extension direction on rear support 3, slide block 6 slides along the The extending direction of the groove 31 is provided on the rear bracket 3 so as to slide up and down. On the side bracket on the same side, the slider 6 is located above the connecting piece 12 .

In this embodiment, the brace assembly includes a rear cross brace assembly 7 disposed between the rear brackets 3 on both sides, and the rear cross brace assembly 7 includes two rear brace rods 71 that intersect each other and are pivotally connected at the intersection. , each rear strut 71 is set as follows: one end of the rear strut 71 is pivotally connected to the rear support 3 on one side, and the other end of the rear strut 71 is pivotally connected to the slider 6 on the other side. Wherein, one end of the rear strut 71 is pivotally connected to the rear support 3 through a rotating shaft 72 , and on the same side of the rear support 3 , the rotating shaft 72 is located below the slider 6 to avoid forming a barrier to the sliding of the sliding member 6 . Here, the connecting member 12 is disposed between the sliding member 6 and the rotating shaft 72 on the rear bracket 3 . Of course, the strut assembly can also adopt other structural forms, as long as it can realize the lateral expansion and folding between the side brackets on both sides.

Referring to the accompanying drawings, the children's stroller is a three-wheeled stroller, and the front lower ends of the front brackets 1 on both sides are rotatably connected through the adapter 11, so that when the rear cross support assembly 7 is folded in the left and right directions, The rear brackets 3 on both sides are folded in the left and right directions, and the front brackets 1 on both sides are also rotated relative to the adapters 11 to move closer to each other in the left and right directions. The wheel assembly includes a front wheel 10 disposed at the bottom of the adapter 11 and two rear wheels 20 disposed at the bottom of the rear brackets 3 on both sides.

Referring to the drawings, on the side brackets on both sides, the top of the push rod 2 is provided with a push rod 9, and the push rod 9 is rotatably sleeved on the top of the push rod 2 around the axis line of the push rod 2 , the push rods 9 on both sides are pivotally connected, and when the side brackets on both sides move closer to each other along the left and right directions, the push handle rods 9 on both sides rotate relative to each other, driving the push rods 2 on both sides to move closer to each other along the left and right directions .

The cart frame is also provided with a front armrest 8 and a tent rod 14, the front armrest 8 is detachably installed between the tops of the front brackets 1 on both sides, and the tent rod 14 is detachably installed on the push rods 2 on both sides for the installation of awnings.

In this embodiment, on the cart frame, the locking mechanism is a locking piece (not shown) arranged between the sliding piece 6 and the rear bracket 3 for locking the two. The locking piece can be a common Such as the structural form of the lock tongue and the lock hole.

Referring to Fig. 1 and Fig. 2, when the trolley frame is unfolded and the locking mechanism is locked, the rear cross support assembly 7 is deployed along the left and right direction and supported between the rear brackets 3 on both sides, the rear bracket 3, the push rod 2 and the A stable triangular structure is formed between the support rods 5, a stable quadrilateral structure is formed between the front support 1, the seat post 4, the rear support 3 and the support rods 5, and the cart frame is in a stable unfolded position.

When the cart frame needs to be folded up, first the front armrest 8 and the canopy rod 14 are disassembled, and then the locking mechanism is unlocked so that the slider 6 slides upward along the rear bracket 3, and under the action of the support rod 5, the push rod 2, the upper end of the front bracket 1 and the front end of the support rod 5 all move forward, so that the push rod 2 turns backwards and gradually moves closer to the rear bracket 3, and the front end of the seat post 4 gradually moves upward to drive the seat post 4 and the front bracket 1 Move closer to the rear bracket 3 gradually. Simultaneously, the upward movement of the slider 6 makes the upper ends of the rear struts 71 move upwards, and the two rear struts 71 of the rear cross support assembly 7 rotate relative to each other so that the rear brackets 3 on both sides move closer together in the left and right directions, driving the push rods 2 on both sides and the front bracket 1 are relatively rotated closer, as shown in Figure 3, finally, the front bracket 1, the push rod 2, the rear bracket 3, the seat post 4 and the support rod 5 on both sides are all close together, and the rear cross brace assembly 7 The two rear struts 71 are folded between the side supports on both sides. The folded structure is compact and occupies less space.

When the cart frame needs to be launched, the push rod 2 is lifted upwards, and the lower end of the push rod 2 moves downward to drive the upper end of the front support 1 and the front end of the support rod 5 to move downward. Under the action of the support rod 5, Slider 6 slides downward along rear bracket 3, so that push rod 2, rear bracket 3 and support rod 5 are gradually expanded, and front bracket 1 is gradually expanded relative to rear bracket 3. The strut 71 relatively rotates and gradually unfolds along the left and right directions until the cart frame is fully expanded, the locking mechanism locks, and then the front armrest 8 and the canopy rod 14 are installed, and the unfolding operation of the cart is completed.

To sum up, the children's stroller of the present invention has a simple structure, a small number of rods, convenient folding and unfolding operations, a compact structure and a small volume after folding, and can be conveniently stored and carried. The three-wheeled cart structure is especially suitable for installing the front wheel 10 and the rear wheel 20 with larger wheel diameters as a children's running car, which is easy to push and more comfortable to use.

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 (8)

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, the trolley frame includes side brackets located on the left and right sides respectively, and a strut assembly arranged between the side brackets on both sides that can be folded and unfolded horizontally, and is characterized in that: the side brackets on each side are It includes a front bracket, a push rod whose lower part is pivotally connected to the front bracket, a rear bracket whose upper part is pivotally connected to the push rod, and a seat post extending in the front-rear direction, and the front end of the seat post is rotatably connected to the On the front bracket, the rear end of the seat post is rotatably connected to the rear bracket, and the side bracket also includes a support rod, and the front end of the support rod is connected to the upper part of the front bracket or the push rod The lower part of the support rod is rotatably connected, the front end of the support rod is located between the front end of the seat post and the upper end of the rear bracket, and the rear end of the support rod is rotatably connected with a slider, and the slider is along the The length extension direction of the rear bracket is slidably arranged on the rear bracket, wherein the strut assembly includes a rear cross brace assembly arranged between the rear brackets on both sides, and the rear cross brace assembly includes cross braces and Two rear struts are pivotally connected at the intersection, one end of each said rear strut is pivotally connected to the said rear support on one side, and the other end is pivotally connected to said sliding member. 2. The children's stroller according to claim 1, wherein one end of the rear support rod is pivotally connected to the rear support through a rotating shaft, and the rotating shaft on the rear support on this side is located on the sliding part below. 3. The stroller for children according to claim 1, characterized in that: the front end of the support rod, the lower end of the push rod and the upper end of the front bracket are pivotally connected together. 4. The stroller according to claim 1, characterized in that: the rear end of the seat post is rotatably connected to the rear bracket through a connecting piece, and the connecting piece is located on the rear bracket on the Below the slider. 5. The children's stroller according to claim 1, characterized in that: the sliding member is a slider slidably arranged on the rear bracket, and the rear bracket is provided along its length extending direction for providing the The chute for the slider to slide up and down. 6 . The baby stroller according to claim 1 , wherein a push handle is rotatably provided on the top of each push rod, and the push handles on both sides are pivotally connected. 7 . 7. The stroller for children according to claim 1, wherein the stroller frame further comprises a front armrest detachably connected between the upper parts of the front brackets on both sides. 8. The stroller according to any one of claims 1 to 7, characterized in that: the lower ends of the front brackets on both sides are rotatably connected through adapters, and the wheel assembly includes The front wheel at the bottom and the two rear wheels at the bottom of the rear support on both sides.