CN105172867A - Stroller wheel automatic folding structure - Google Patents

Abstract

The invention discloses an automatic folding structure of a baby wheel, comprising a handlebar tube, a lower coil tube, a front wheel and a rear wheel; the handlebar tube is hinged with the lower coil tube; the front wheel is arranged on the front wheel seat, the rear wheel is arranged on the rear wheel seat, the front wheel seat and the lower coil tube are rotatably connected around the lower coil tube, and the rear wheel seat and the lower coil tube are rotatably connected around the lower coil tube; a sliding sleeve that can slide along the lower coil tube is provided on the lower coil tube, a connecting rod is provided between the handlebar tube and the lower coil tube, one end of the connecting rod is movably connected to the handlebar tube, and the other end of the connecting rod is movably connected to the sliding sleeve; a linkage mechanism is provided on the lower coil tube, and when the handlebar tube and the lower coil tube are folded, the sliding sleeve drives the front wheel seat and the rear wheel seat through the linkage mechanism to turn the front wheel and the rear wheel from a vertical placement to a horizontal placement direction. The structure of the invention can realize the inward bending of the wheels when the frame is folded. This structure is simple, easy to operate, and can save volume.

Description

Stroller wheel automatic folding structure

technical field

The invention relates to an automatic folding structure of the wheels of a baby carriage, in particular to a structure of a baby carriage whose wheels can be bent inward after the carriage is retracted.

Background technique

At present, the children's car structure in the traditional technology has a variety of folding methods due to the need for portability. In order to save space, technicians try to improve the structure, but the structure is still complicated, the operation is inconvenient, and the volume reduction is limited.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic folding structure for the wheels of the stroller, which has a simple structure, is easy to operate, and can save volume.

The automatic folding structure of the stroller wheel of the present invention can take the following technical solutions:

A stroller wheel automatic folding structure, including a handle tube, a lower coil tube, a front wheel, and a rear wheel; the handle tube and the lower coil tube are hinged; the front wheel is set on the front wheel seat, and the rear wheel is set on the rear wheel seat , the front wheel seat and the lower coil can be rotatably connected around the lower coil, the rear wheel seat and the lower coil can be rotatably connected around the lower coil; the lower coil is provided with a sliding sleeve that can slide along the lower coil, and the hand There is a connecting rod between the handle tube and the lower coil tube, one end of the connecting rod can be flexibly connected to the handle tube, and the other end of the connecting rod can be flexibly connected to the sliding sleeve; When the coils are folded, the sliding sleeve drives the front wheel seat and the rear wheel seat through the linkage mechanism to make the front wheel and the rear wheel turn from vertical placement to horizontal placement.

The present invention can further take the following measures to solve the problem:

One of the methods is: the linkage mechanism includes a front connecting pipe, a rear connecting pipe, and a rotating pipe, the outer wall of the rotating pipe is provided with an arc-shaped groove along the outer wall of the rotating pipe, and the rotating pipe is located in the lower coil; There is a pin on the sliding sleeve, and the pin extends into the arc groove through the strip chute on the lower coil tube; one end of the front connecting pipe is connected to the rotating pipe, and the other end is connected to the front wheel base; one end of the rear connecting pipe is connected to the rotating pipe, and the other end is Connect the rear wheel base.

One way is: the front connecting pipe and the rear connecting pipe are located in the lower coil pipe.

One of the modes is: the arc-shaped groove is a groove formed by extending toward the circumferential direction and the axial direction of the outer wall of the rotating tube.

One of the ways is: the front wheel seat and the rear wheel seat are respectively provided with collars, and each collar is placed on the lower coil pipe.

One of the ways is: the lower coil tube is provided with a steering groove extending along the circumferential direction of the lower coil tube at a position corresponding to the front wheel base, and the front connecting pipe is connected with the front wheel base through the steering groove.

One of the ways is: the lower coil tube is provided with a steering groove extending along the circumferential direction of the lower coil tube at a position corresponding to the rear wheel base, and the rear connecting pipe is connected with the rear wheel base through the steering groove.

Above-mentioned technical scheme has such technical effect :

The structure of the present invention can realize the inward bending of the wheels during the folding process of the handle pipe, so that the volume of the vehicle frame can be greatly reduced. The structure is simple, the operation is convenient, and the volume can be saved.

Description of drawings

Fig. 1 is a schematic diagram of the automatic folding structure of the stroller wheel.

Fig. 2 is a folding schematic diagram of the automatic folding structure of the stroller wheel.

Fig. 3 is a schematic diagram of the folding state of the automatic folding structure of the stroller wheel.

Fig. 4 is a schematic diagram of another folding state of the automatic folding structure of the stroller wheel.

Fig. 5 is an exploded schematic view of the automatic folding structure of the stroller wheels.

Fig. 6 is a schematic diagram of the internal structure of the automatic folding structure of the stroller wheel.

Fig. 7 is a partially enlarged schematic diagram of the internal structure of the automatic folding structure of the stroller wheels.

Figure 8 is a schematic diagram of the lower coil.

Detailed ways

The present invention will be specifically described below in conjunction with specific embodiments.

Embodiment: As shown in Fig. 1 to Fig. 8, the automatic folding structure of the stroller wheel includes a handle pipe 1, a lower coil pipe 2, a front wheel 3, and a rear wheel 4. The handle pipe 1 is hinged with the lower coil pipe 2. In this example, the handle pipe 1 is hinged with the front end of the lower coil pipe 2. The front wheel 3 is arranged on the front wheel base 301, and the rear wheel 4 is located on the rear wheel base 401. The front wheel base 301 and the lower coil tube 2 can be rotatably connected around the lower coil tube 2, and the rear wheel base 401 is connected to the lower coil tube 2. It can be rotatably connected around the lower coil pipe 2. The lower coil pipe 2 is provided with a sliding sleeve 5 that can slide along the lower coil pipe 2, and a connecting rod 6 is arranged between the handle pipe 1 and the lower coil pipe 2, and one end of the connecting rod 6 is movably connected with the handle pipe 1, and the The other end of the rod 6 is movably connected with the sliding sleeve 5 . The lower coil tube 2 is provided with a linkage mechanism. When the handle tube 1 and the lower coil tube 2 are folded, the sliding sleeve 5 drives the front wheel seat 301 and the rear wheel seat 401 through the linkage mechanism to make the front wheel 3 and the rear wheel 4 Turn from vertical placement to horizontal placement.

The linkage mechanism includes a front connecting pipe 7, a rear connecting pipe 8, and a rotating pipe 9. The outer wall of the rotating pipe 9 is provided with an arc-shaped groove 901 along the outer wall of the rotating pipe 9. The rotating pipe 9 is located at the lower coil pipe 2. Inside. The sliding sleeve 5 is provided with a pin 501, and the pin 501 extends into the arc groove 901 through the strip chute 201 on the lower coil tube 2; one end of the front connecting pipe 7 is connected to the rotating pipe 9, and the other end is connected to the front wheel base 301; One end of the connecting pipe 8 is connected to the rotating pipe 9, and the other end is connected to the rear wheel base 401.

The front connecting pipe 7 and the rear connecting pipe 8 are located in the lower coil pipe 2 .

The arc-shaped groove 901 is a groove formed extending toward the circumferential direction and the axial direction of the outer wall of the rotating tube 9 .

The front wheel base 301 and the rear wheel base 401 are respectively provided with collars 10 , and each collar 10 is set on the lower coil pipe 2 .

One improvement is: the lower coil tube 2 is provided with a steering groove 202 extending along the circumference of the lower coil tube 2 at a position corresponding to the front wheel base 301 , and the front connecting pipe 7 is connected to the front wheel base 301 through the steering slot 202 .

An improved way is: the lower coil tube 2 is provided with a turning slot 203 extending along the circumference of the lower coil tube 2 at a position corresponding to the rear wheel base 401 , and the rear connecting pipe 8 is connected to the rear wheel base 401 through the steering slot 203 .

Working principle: When the handle tube is folded down to the coil tube, the connecting rod drives the sliding sleeve to slide, and the pin slides in the arc-shaped groove to make the rotating tube rotate. The rotating pipe drives the front connecting pipe and the rear connecting pipe to rotate simultaneously, and at this moment drives the front wheel base respectively, and the rear wheel base turns to the horizontal direction, realizing the inward bending of the wheel. The structure is simple, the operation is convenient, and the volume can be saved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (7)

1. A baby wheel automatic folding structure, which is characterized in that: it includes a handle pipe, a lower coil pipe, a front wheel, and a rear wheel; the handle pipe is hinged to the lower coil pipe; Set on the rear wheel seat, the front wheel seat and the lower coil can be rotatably connected around the lower coil, the rear wheel seat and the lower coil can be rotatably connected around the lower coil; Sliding sliding sleeve, there is a connecting rod between the handle tube and the lower coil tube, one end of the connecting rod can be flexibly connected to the handle tube, and the other end of the connecting rod can be flexibly connected to the sliding sleeve; the lower coil tube is equipped with a linkage mechanism , when folding between the handle pipe and the lower coil pipe, the sliding sleeve drives the front wheel seat and the rear wheel seat through the linkage mechanism to make the front wheel and the rear wheel turn from vertical placement to horizontal placement. 2. The stroller wheel automatic folding structure according to claim 1, characterized in that: the linkage mechanism includes a front connecting pipe, a rear connecting pipe, and a rotating pipe, and the outer wall of the rotating pipe is provided with a The arc-shaped groove set on the outer wall, the rotating tube is located in the lower coil tube; the sliding sleeve is provided with a pin, and the pin extends into the arc-shaped groove through the bar-shaped chute on the lower coil tube; one end of the front connecting tube is connected to the rotating tube, and the other end Connect the front wheel seat; one end of the rear connecting pipe is connected to the rotating pipe, and the other end is connected to the rear wheel seat. 3. The stroller wheel automatic folding structure according to claim 2, characterized in that: the front connecting pipe and the rear connecting pipe are located in the lower coil pipe. 4. The stroller wheel automatic retractable structure according to claim 2, characterized in that: the arc-shaped groove is a groove extending toward the outer wall of the rotating tube in the circumferential and axial directions. 5. The stroller wheel automatic folding structure according to claim 2, characterized in that: the front wheel seat and the rear wheel seat are respectively provided with collars, and each collar is set on the lower coil. 6. The stroller wheel automatic folding structure according to claim 5, characterized in that: the lower coil tube is provided with a steering groove extending along the circumferential direction of the lower coil tube at a position corresponding to the front wheel seat, and the front connecting pipe is turned through the steering slot. The groove is connected with the front wheel seat. 7. The stroller wheel automatic folding structure according to claim 5, characterized in that: the lower coil tube is provided with a steering groove extending along the circumferential direction of the lower coil tube at the position corresponding to the rear wheel seat, and the rear connecting pipe passes through the steering groove. The groove is connected with the rear wheel seat.