CN203920862U - Children trolley - Google Patents

Abstract

The utility model discloses a stroller for children, the stroller frame of which comprises a bottom frame, a front bracket, a rear bracket, a push rod and a seat post, wherein the lower part of the front bracket is rotatably connected with the front part of the bottom frame, and the rear bracket includes The upper support rod and the lower support rod are rotatably connected, the lower part of the lower support rod is rotatably connected with the rear part of the chassis, the upper part of the upper support rod is rotatably connected with the upper part of the front support, and the push rod extends along the length of the front support Slidingly arranged on the front bracket, one end of the seatpost is slidably and rotatably arranged relative to the front bracket, and the other end of the seatpost is rotatably connected to at least one part of the upper brace and the lower brace. The number of rods of the stroller frame is small, so that the front part of the seatpost slides downward relative to the front bracket or the upper pole and the lower pole are relatively rotated and folded inward to realize the folding of the stroller frame. The rods of the trolley frame can be close to each other, so the structure is compact and occupies less space.

Description

stroller

technical field

The utility model 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.

Contents of the invention

The purpose of the utility model is to provide a child stroller with simple structure and convenient folding and opening operations.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a children's stroller, including a foldable stroller frame, a wheel assembly arranged at the bottom of the stroller frame, and used to push the stroller A locking mechanism that locks the frame in the unfolded state, the cart frame includes:

a bottom frame, the bottom frame extending along the front-rear direction;

a front bracket, the lower part of the front bracket is rotatably connected to the front part of the chassis;

The rear support includes an upper support rod, a lower support rod whose upper part is rotatably connected with the lower part of the upper support rod, and the lower part of the lower support rod is rotatably connected with the rear part of the chassis, and the upper support rod The upper part is rotatably connected with the upper part of the front bracket;

a push rod, the push rod is slidably arranged on the front bracket along the length extension direction of the front bracket;

Seatpost, one end of the seatpost is rotatable relative to the front bracket and is slidably arranged on the front bracket along the length extension direction of the front bracket, and the other end of the seatpost is rotatably connected to the The upper support rod and at least one part of the lower support rod.

Preferably, the lower part of the push rod is provided with a slider, and the slider is provided on the front bracket so as to slide along the length extension direction of the front bracket.

Further preferably, the sliding member is fixedly arranged at the lower end of the push rod.

Further preferably, the slider is provided on the push rod so as to be slidable relative to the push rod along the length extension direction of the push rod.

Preferably, the locking mechanism is provided between the push rod, the front bracket and the upper support rod for locking the three together.

Further preferably, the front portion of the seatpost is rotatably connected to the slider.

As a specific implementation, the sliding member is a sliding sleeve.

Preferably, when the cart frame is unfolded, the upper support rod and the lower support rod extend along the same straight line direction, and the front support, the upper support rod, the lower support rod and the bottom frame form a triangle in between.

Preferably, the rear portion of the seat post, the lower portion of the upper strut, and the upper portion of the lower strut are rotatably connected together.

Preferably, the wheel assembly includes a front wheel arranged at the front bottom of the chassis, and a rear wheel arranged at the rear bottom of the chassis.

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, wherein the stroller frame only includes the bottom frame, the front bracket, the upper support rod, the lower support rod, the push rod Rods and seatposts, the number of rods is small, so that the front part of the seatpost slides downward relative to the front bracket or the upper pole and the lower pole are relatively rotated and folded inward to realize the folding of the stroller frame, and in In the folded state, the rods on the cart frame can be close to each other, the structure is compact, the space occupied is small, and the folding and opening operations are very convenient.

Description of drawings

Accompanying drawing 1 is the overall structure schematic diagram of the children's stroller of the present utility model;

Accompanying drawing 2 is the side view when the children's stroller of the present invention is 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 (when the wheel assembly is removed);

Accompanying drawing 4 is the side view (when the wheel assembly is removed) of the children's stroller of the present utility model when it is in a folded state;

Among them: 1. Underframe; 2. Front bracket; 3. Push rod; 4. Upper support rod; 5. Lower support rod; 6. Seat post; 7. Slider (sliding sleeve); 10. Front wheel; 20. rear wheel.

Detailed ways

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

The following definitions of direction are all defined according to the direction observed by the user when the stroller is unfolded and used. The front and rear directions are the left and right directions in Figure 2, where the left is the front and the right is the After; the up and down direction is the up and down direction in each accompanying drawing.

Referring to the children's stroller shown in Figures 1 to 4, the children's stroller includes a foldable stroller frame, a wheel assembly located at the bottom of the stroller frame, and a lock for locking the stroller frame in an unfolded state. locking mechanism. The stroller frame includes an underframe 1, a front bracket 2, a rear bracket, a push rod 3 and a seat post 6.

Referring to the accompanying drawings, the underframe 1 extends along the front-to-back direction, and the wheel assembly includes a front wheel 10 and a rear wheel 20. department. The lower part of the front bracket 2 is rotatably connected to the front part of the underframe 1, the rear bracket includes an upper strut 4 and a lower strut 5 which are rotatably connected, and the bottom of the upper strut 4 is rotatably connected with the upper part of the lower strut 5 , the top of the upper strut 4 is rotatably connected to the top of the front bracket 2, and the bottom of the lower strut 5 is rotatably connected to the rear of the underframe 1. In this way, a four-bar linkage mechanism is formed between the underframe 1, the front support 2, the upper strut 4 and the lower strut 5.

The push rod 3 can be slidably arranged on the front support 2 along the length extension direction of the front support 2. Here, the bottom of the push rod 3 is provided with a sliding part 7, and the sliding part 7 can be fixedly arranged on the bottom of the push rod 3. The sliding member 7 can be arranged on the push rod 3 so as to slide relative to the push rod 3 along the length extension direction of the push rod 3 . In this embodiment, the sliding member 7 adopts a sliding sleeve, and the sliding sleeve 7 is slidably sleeved on the front bracket 2, and the push rod 3 is slidably inserted in the sliding sleeve 7 along the extending direction of its own length, so that the sliding sleeve can be Sliding relative to the front bracket 2, but also sliding relative to the push rod 3.

The seatpost 6 extends along the front-to-back direction, and the front end of the seatpost 6 is rotatable relative to the front bracket 2 and is slidably arranged on the front bracket 2 along the length extension direction of the front bracket 2. Here, the front part of the seatpost 6 is rotatably connected to On the slider 7; the rear part of the seatpost 6 is rotationally connected to at least one part of the upper strut 4 and the lower strut 5, where the rear part of the seatpost 6, the lower part of the upper strut 4 and the lower The upper parts of the struts 5 are rotatably connected together.

In this embodiment, the locking mechanism is a locking member (not shown in the figure) arranged between the upper support rod 4 , the front bracket 2 and the push rod 3 for locking the three. Certainly also can lock mechanism be located at other positions or be arranged in other structures, as being set as locking between slide piece 7 and front bracket 2 and between slide piece 7 and push rod 3, as long as can guarantee that pushcart vehicle frame can be expanded. It is sufficient that the relative positional relationship between the rods is stable.

When the stroller is unfolded, as shown in Fig. 1 and Fig. 2, the locking mechanism is locked, and the upper pole 4 and the lower pole 5 of the bottom frame 1, the front bracket 2 and the rear bracket are mutually unfolded, and the sliding part 7 slides To the top of the front bracket 2, and the slider 7 is located at the bottom of the push rod 3, the seat post 6 is supported between the bottom of the push rod 3 and the rear bracket, and the cart frame is in a stable unfolded state. Here, when the trolley frame is unfolded, the upper strut 4 and the lower strut 5 extend along the same straight line, so that a triangular structure is formed between the underframe 1, the front bracket 2, the upper strut 4, and the lower strut 5, It can make the cart frame more stable in the unfolded state.

When the stroller frame needs to be folded, as shown in Figure 3, first unlock the locking mechanism, push the push rod 3 downwards so that the push rod 3 slides downward relative to the sliding part 7, and then drives the sliding part 7 to slide down along the front bracket 2 , the slider 7 slides down to drive the seat post 6 to move forward, and the rear part of the seat post 6 drives the lower part of the upper strut 4 and the upper part of the lower strut 5 to move forward, and then drives the gap between the upper strut 4 and the lower strut 5 to move forward. The relative rotation finally makes the front support 2, upper support rod 4, lower support rod 5 and seat post 6 move closer to the bottom frame 1, and the push rod 3 also moves closer to the front support 2. At this time, the lower part of the push rod 3 slides to the front The front part of the bracket 2, as shown in Figure 4. The rods on the folded cart frame are completely close together, the structure is compact, and the occupied space is small.

When it is necessary to unfold the cart frame, you only need to pull the push rod 3 upwards, and the push rod 3 first slides up relative to the sliding part 7, and then drives the sliding part 7 to slide upwards relative to the front bracket 2. In this way, under the action of the seat post 6 , the upper strut 4 and the lower strut 5 rotate relative to each other and gradually stand between the bottom frame 1 and the front frame 2 . After the push rod 3 slides to the top of the front bracket 2 and reaches the set position, the locking mechanism is locked, and the cart frame is in a stable unfolded state.

In addition, when the cart frame is folded, after the locking mechanism is unlocked, the upper pole 4 and the lower pole 5 can be relatively rotated first, so that the transition point of the two can be moved forward for a certain distance, so that it can cross the dead pole. point position, the upper strut 4 and the lower strut 5 are retracted inwardly, and the push rod 3 slides down along the front bracket 2 under the action of its own gravity and the action of the seat post 6, so that the folding is very smooth and fast.

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 foldable stroller frame, a wheel assembly located at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in an unfolded state, its features In that, the cart frame includes: a bottom frame, the bottom frame extending along the front-rear direction; a front bracket, the lower part of the front bracket is rotatably connected to the front part of the chassis; The rear support includes an upper support rod, a lower support rod whose upper part is rotatably connected with the lower part of the upper support rod, and the lower part of the lower support rod is rotatably connected with the rear part of the chassis, and the upper support rod The upper part is rotatably connected with the upper part of the front bracket; a push rod, the push rod is slidably arranged on the front bracket along the length extension direction of the front bracket; Seatpost, one end of the seatpost is rotatable relative to the front bracket and is slidably arranged on the front bracket along the length extension direction of the front bracket, and the other end of the seatpost is rotatably connected to the The upper support rod and at least one part of the lower support rod. 2. The stroller according to claim 1, characterized in that: the lower part of the push rod is provided with a sliding piece, and the sliding piece is provided on the front support so as to slide along the length extension direction of the front support . 3. The stroller for children according to claim 2, wherein the sliding member is fixedly arranged at the lower end of the push rod. 4. The stroller for children according to claim 2, wherein the sliding member is provided on the push rod so as to be slidable relative to the push rod along the extending direction of the length of the push rod. 5 . The stroller for children according to claim 1 , wherein the locking mechanism is arranged between the push rod, the front bracket and the upper support rod for locking the three together. 6 . 6. The children's stroller according to claim 2, wherein the front portion of the seatpost is rotatably connected to the slider. 7. The stroller for children according to any one of claims 2 to 6, wherein the sliding member is a sliding sleeve. 8. The children's stroller according to claim 1, characterized in that: when the stroller frame is unfolded, the upper strut and the lower strut extend along the same straight line, and the front support, the A triangle is formed between the upper pole, the lower pole and the bottom frame. 9. The stroller for children according to claim 1, characterized in that: the rear part of the seat post, the lower part of the upper support rod, and the upper part of the lower support rod are rotatably connected together. 10 . The stroller for children according to claim 1 , wherein the wheel assembly comprises a front wheel disposed at the front bottom of the chassis, and a rear wheel disposed at the rear bottom of the chassis. 11 .