CN106143577A - Children trolley - Google Patents

Abstract

The invention relates to a stroller for children, comprising a vehicle frame in an unfolded state and a folded state, the vehicle frame comprising a push rod assembly, a front strut assembly, a rear strut assembly, a front wheel bracket assembly and a rear wheel bracket assembly, The lower end of the push rod assembly, the upper end of the front strut assembly and the upper end of the rear strut assembly are rotatably connected through a linkage mechanism, the lower end of the front strut assembly is rotatably connected to the front wheel bracket assembly, and the The lower end of the rear brace assembly is rotatably connected to the rear wheel bracket assembly, and the front wheel bracket assembly is slidably connected to the rear wheel bracket assembly. When the vehicle frame is folded, the push rod assembly, front brace assembly The assembly and the rear strut assembly are linked to rotate and move closer to the front wheel support assembly and the rear wheel support assembly, and the front wheel support assembly slides and gathers towards the rear wheel support assembly. The interlocking rotation structure of the present invention has a simple structure and convenient operation, so that the folded vehicle frame is small in size and convenient for storage.

Description

stroller

technical field

The invention relates to the field of children's products, in particular to a baby stroller.

Background technique

With the increase in the utilization rate of children's strollers, their functions are gradually diversified. All current carts can realize the functions of unfolding and folding, which are convenient for use and storage. However, the folding principles of the pushcart are various, which causes inconvenience in operation and complicates the structure of the pushcart at the same time.

Contents of the invention

The object of the present invention is to provide a simple, practical and convenient folding stroller for children.

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

A kind of stroller for children, comprising a vehicle frame with unfolded state and folded state, described vehicle frame comprises push rod assembly, front strut assembly, rear strut assembly, front wheel support assembly and rear wheel support assembly, described The lower end of the push rod assembly, the upper end of the front strut assembly and the upper end of the rear strut assembly are rotatably connected through a linkage mechanism, the lower end of the front strut assembly is rotatably connected to the front wheel bracket assembly, and the rear strut The lower end of the assembly is rotatably connected with the rear wheel bracket assembly, and the front wheel bracket assembly is slidably connected with the rear wheel bracket assembly,

When the vehicle frame is folded, the push rod assembly, the front strut assembly, and the rear strut assembly rotate in conjunction and move closer to the front wheel bracket assembly and the rear wheel bracket assembly, and the front wheel bracket assembly Slide toward the rear wheel bracket assembly.

Preferably, the vehicle frame further includes a locking mechanism for locking it in an unfolded state, and when the locking mechanism is unlocked, the vehicle frame can be folded.

Preferably, the push rod assembly includes a lower push rod assembly, an upper push rod assembly slidingly connected with the lower push rod assembly, the lower end of the lower push rod assembly is connected to the upper end of the front strut assembly and the upper end of the rear strut assembly are rotatably connected through a linkage mechanism.

Further preferably, the push rod assembly further includes a locking part that relatively locks the lower push rod assembly and the upper push rod assembly, and when the locking part is unlocked, the upper push rod assembly moves along the The upper push rod assembly slides and folds in the extension direction, and at the same time drives the linkage mechanism to fold the vehicle frame.

Preferably, the front wheel bracket assembly is provided with a slider, and the lower end of the front strut assembly is rotatably connected to the slider.

Preferably, the front wheel bracket assembly and the rear wheel bracket assembly are relatively slidably connected in the horizontal direction.

Preferably, the lower end of the push rod assembly, the upper end of the front strut assembly and the upper end of the rear strut assembly are rotatably connected through a first shaft.

Further preferably, the linkage mechanism includes a first arc-shaped slot opened at the lower end of the push rod assembly, a second arc-shaped slot opened at the upper end of the front strut assembly, and a second arc-shaped slot opened at the upper end of the front strut assembly. The linear groove and the sliding block at the upper end of the rear strut assembly. The sliding block is provided with a shaft hole and a chute extending along its length direction. A second shaft passes through the first arc-shaped groove and the second arc groove simultaneously. Two arc-shaped slots, straight slots and shaft holes of the sliding block, the first shaft passes through the slide slot of the sliding block.

Further preferably, the lower end of the push rod assembly is connected with a push rod rotating part, and the first arc-shaped groove is opened on the push rod rotating part; the upper end of the front strut assembly is connected with a front The pole rotating part, the second arc-shaped groove is opened on the front pole rotating part; the upper end of the rear pole assembly is connected with the rear pole rotating part, and the linear groove is opened on the on the rear strut swivel.

Preferably, the front strut assembly and the rear strut assembly have an included angle toward the front with respect to the direction in which the front wheel bracket assembly extends, and the included angles are both less than 90 degrees, and the front brace assembly The included angle between the rod assembly and the front wheel bracket assembly is greater than the angle between the rear brace assembly and the front wheel bracket assembly.

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

The interlocking rotation structure of the present invention has a simple structure and convenient operation, so that the folded vehicle frame is small in size and convenient for storage.

Description of drawings

Accompanying drawing 1 is the stereogram of present embodiment;

Accompanying drawing 2 is the schematic diagram of the expanded state of the present embodiment;

Accompanying drawing 3 is the schematic diagram of the folded state of the present embodiment;

Accompanying drawing 4 is the split schematic diagram of the rotation linkage mechanism in this embodiment;

Accompanying drawing 5 is the schematic diagram of the expanded state of this embodiment (showing the rotation linkage mechanism);

Accompanying drawing 6 is the schematic diagram of the folded state of this embodiment (showing the rotation linkage mechanism).

Among them: 1. Push rod assembly; 10. Lower push rod assembly; 100. Push rod rotating part; 11. Upper push rod assembly; 2. Front strut assembly; 20. Front strut rotating part; 3. Rear strut assembly 30. Rear strut rotating part; 4. Front wheel support assembly; 40. Slide block; 5. Rear wheel support assembly; 60. First arc groove; 61. Second arc groove; 62. Straight line groove; 63 , sliding block; 630, shaft hole; 631, chute; 64, first shaft; 65, second shaft; 7, rotating housing.

detailed description

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

A kind of stroller for children as shown in Figure 1, comprises the vehicle frame that has expanded state and folded state, and vehicle frame comprises push rod assembly 1, front strut assembly 2, rear strut assembly 3, front wheel support assembly 4, rear Wheel bracket assembly 5 and a locking mechanism for locking the vehicle frame in the unfolded state.

In this embodiment: the lower end of the push rod assembly 1, the upper end of the front strut assembly 2 and the upper end of the rear strut assembly 3 are rotatably connected through a linkage mechanism, and the lower end of the front strut assembly 2 is rotated with the front wheel bracket assembly 4 Connected, the lower end of the rear strut assembly 3 is rotationally connected with the rear wheel support assembly 5, and the front wheel support assembly 4 is slidably connected with the rear wheel support assembly 5 in the horizontal direction. The direction in which the front strut assembly 2 and the rear strut assembly 3 extend with the front wheel bracket assembly 4 has an included angle towards the front, the included angles are all less than 90 degrees, and the angle between the front strut assembly 2 and the front wheel bracket assembly 4 greater than the angle between the rear strut assembly 3 and the front wheel bracket assembly 4.

Specifically: the push rod assembly 1 includes a lower push rod assembly 10, an upper push rod assembly 11 that is slidably connected with the lower push rod assembly 10, a locking member that relatively locks the lower push rod assembly 10 and the upper push rod assembly 11, and the lower push rod assembly 10 and the upper push rod assembly 11 are relatively locked. The lower end of the push rod assembly 10 is rotationally connected with the upper end of the front strut assembly 2 and the upper end of the rear strut assembly 3 through a linkage mechanism. The lower push rod assembly 10 is two hollow rods, and the upper push rod assembly 11 is a U-shaped rod. In the bar, relative sliding is realized. The locking part can be a part of the locking mechanism, or it can be set independently from the locking mechanism. Both the locking part and the locking mechanism can be set on the upper push rod assembly 11 to facilitate the unlocking operation. In this embodiment, the locking mechanism and locking components are not the main invention points, and any structure capable of realizing the above-mentioned locking function can be used, and details will not be repeated here.

The front strut assembly 2 and the rear strut assembly 3 are respectively two rods.

The front wheel support assembly 4 is a U-shaped bar connected with a wheel, the rear wheel support assembly 5 is a hollow U-shaped bar connected with a wheel, and the two ends of the U-shaped bar of the front wheel support assembly 4 are respectively slidably inserted in the In the hollow U-shaped bar of the rear wheel support assembly 5, relative sliding is realized. A slide block 40 is arranged on the front wheel bracket assembly 4 , and the lower end of the front strut assembly 2 is rotatably connected with the slide block 40 .

When the locking mechanism of the cart is unlocked, push down the push rod assembly 1, and under the action of the linkage mechanism, the push rod assembly 1, the front strut assembly 2 and the rear strut assembly 3 rotate in linkage, and the front strut assembly 2 rotates at the same time In the process of driving the front wheel bracket assembly 4 to slide in the direction of the rear wheel bracket assembly 5, the push rod assembly 1, the front strut assembly 2, and the rear strut assembly 2 move closer to the front wheel bracket assembly 4 and the rear wheel bracket The bracket group 4 slides and gathers towards the rear wheel bracket assembly 5, thereby completing the folding, as shown in FIGS. 2 and 3 .

The implementation mode of a linkage mechanism is given as follows:

As shown in Figure 4-6: the lower end of the lower push rod assembly 10 is connected with a push rod rotating part 100, the upper end of the front strut assembly 2 is connected with a front strut rotating part 20, and the upper end of the rear strut assembly 3 is connected with a rear support The rod rotating part 30 , the push rod rotating part 100 , the front strut rotating part 20 and the rear strut rotating part 30 are rotatably connected through the first shaft 64 .

The linkage mechanism includes a first arc-shaped groove 60 provided on the push rod rotating part 100, a second arc-shaped groove 61 provided on the front stay rotating part 20, a linear groove 62 provided on the rear stay rotating part 30, and a slide Block 63, the distance between the first arc-shaped groove 60 and the first axis 64 gradually increases from top to bottom, and the distance between the second arc-shaped groove 61 and the first axis 64 gradually decreases from top to bottom, and the straight line The distance between the slot 62 and the first shaft 64 gradually decreases from top to bottom, and the sliding block 63 is provided with a shaft hole 630 and a slide slot 631 extending along its length. The first shaft 64 passes through the chute 631 of the sliding block 63; a second shaft 65 passes through the shaft hole 630 of the first arc groove 60, the second arc groove 61, the linear groove 62 and the sliding block 63 at the same time, the second The shaft 65 can slide in the first arc-shaped groove 60 , the second arc-shaped groove 61 and the linear groove 62 . When the push rod assembly 1 is pushed, the push rod rotating part 100 rotates, the second shaft 64 in the first arc-shaped groove 60 slides, driven by the sliding block 63, the second shaft 64 is in the linear groove of the rear stay rotating part 30 62. The second arc-shaped groove 61 of the front strut rotating member 20 slides synchronously, thereby driving the front strut assembly 2 and the rear strut assembly 3 to rotate synchronously, realizing the linkage of rotation. The structure of the linkage mechanism is not limited thereto, any structure capable of realizing the linkage function can be used, and details will not be repeated here.

In addition, a rotating housing 7 is provided at the junction of the lower end of the push rod assembly 1 , the upper end of the front strut assembly 2 and the upper end of the rear strut assembly 3 , and the linkage mechanism is disposed in the rotating housing 7 .

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 (10)

1. A child stroller, comprising a vehicle frame with an unfolded state and a folded state, said vehicle frame comprising a push rod assembly, a front strut assembly, a rear strut assembly, a front wheel bracket assembly and a rear wheel bracket assembly, which It is characterized in that: the lower end of the push rod assembly, the upper end of the front strut assembly and the upper end of the rear strut assembly are rotatably connected through a linkage mechanism, the lower end of the front strut assembly is rotatably connected to the front wheel bracket assembly, The lower end of the rear strut assembly is rotatably connected to the rear wheel bracket assembly, and the front wheel bracket assembly is slidably connected to the rear wheel bracket assembly, When the vehicle frame is folded, the push rod assembly, the front strut assembly, and the rear strut assembly rotate in conjunction and move closer to the front wheel bracket assembly and the rear wheel bracket assembly, and the front wheel bracket assembly Slide toward the rear wheel bracket assembly. 2. The stroller according to claim 1, characterized in that: the frame further comprises a locking mechanism for locking it in the unfolded state, when the locking mechanism is unlocked, the frame Can be folded. 3. The children's stroller according to claim 1, characterized in that: said push rod assembly comprises a lower push rod assembly, an upper push rod assembly slidably connected with said lower push rod assembly, said lower push rod assembly The lower end of the push rod assembly is rotationally connected with the upper end of the front strut assembly and the upper end of the rear strut assembly through a linkage mechanism. 4. The children's stroller according to claim 3, characterized in that: said push rod assembly further includes a locking part for locking said lower push rod assembly and upper push rod assembly relative to each other, when unlocking said lock During assembly, the upper push rod assembly slides and folds along the extension direction of the upper push rod assembly, and at the same time drives the linkage mechanism to fold the vehicle frame. 5 . The stroller for children according to claim 1 , wherein a slider is provided on the front wheel bracket assembly, and the lower end of the front strut assembly is rotatably connected to the slider. 6 . 6 . The stroller for children according to claim 1 , wherein the front wheel support assembly and the rear wheel support assembly are relatively slidably connected in a horizontal direction. 7 . 7. The stroller for children according to claim 1, wherein the lower end of the push rod assembly, the upper end of the front strut assembly and the upper end of the rear strut assembly are rotatably connected by a first shaft. 8. The children's stroller according to claim 7, wherein the linkage mechanism includes a first arc-shaped slot opened at the lower end of the push rod assembly, and a first arc-shaped slot opened at the upper end of the front strut assembly. The second arc-shaped slot at the top, the linear slot at the upper end of the rear strut assembly, and the sliding block, the sliding block is provided with a shaft hole, a chute extending along its length, and a second shaft At the same time, the first shaft passes through the first arc groove, the second arc groove, the linear groove and the shaft hole of the sliding block, and the first shaft passes through the slide groove of the sliding block. 9. The children's stroller according to claim 8, characterized in that: the lower end of the push rod assembly is connected with a push rod rotating part, and the first arc-shaped groove is opened on the push rod rotating part ; The upper end of the front strut assembly is connected with a front strut rotating part, and the second arc-shaped groove is opened in the described front strut rotating part; the upper end of the rear strut assembly is connected with a rear support The rod rotating part, the linear groove is set on the rear support rod rotating part. 10. The children's stroller according to claim 1, characterized in that: said front strut assembly and rear strut assembly have an included angle towards the front with the direction in which said front wheel bracket assembly extends, said The included angles are all less than 90 degrees, and the included angle between the front strut assembly and the front wheel bracket assembly is greater than the included angle between the rear brace assembly and the front wheel bracket assembly.