CN214648700U

CN214648700U - Structure of built-in air pressure bar for bicycle seat tube

Info

Publication number: CN214648700U
Application number: CN202120378783.2U
Authority: CN
Inventors: 卓子见; 梁钧富
Original assignee: Li Meng Intelligent Technology Dongguan Co ltd
Current assignee: Li Meng Intelligent Technology Dongguan Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-11-09
Anticipated expiration: 2031-02-19

Abstract

The utility model relates to a built-in barosome structure of bicycle seat pipe includes: an upper tube, the top of which is provided with a bearing seat for connecting with a bicycle seat cushion, and the bottom of the upper tube is provided with a first combining part; a lower tube having a sealing sleeve at its top end and a cam assembly at its bottom end; and a pneumatic rod, which is provided with a second combining part in the lower pipe plug of a tubular cylinder body, and the second combining part is combined with the first combining part of the upper pipe, so that the pneumatic rod is combined between the upper pipe and the lower pipe, and the bottom end of an axle center rod is pressed against the cam component of the lower pipe; the air pressure rod is directly sleeved and connected to the upper tube forming module for positioning, so that the service life of the air pressure rod is prolonged, the difficulty of assembling the bicycle seat tube is reduced, the assembling process is reduced, and the manufacturing cost is reduced.

Description

Structure of built-in air pressure bar for bicycle seat tube

Technical Field

The present invention relates to a bicycle seat tube, and more particularly to a structure of a pneumatic rod built in a bicycle seat tube.

Background

The height of the seat tube structure of the bicycle can be adjusted usually to allow users to ride the bicycle easily.

The seat tube structure of the existing bicycle usually includes an inner tube and an outer tube, the inner tube is sleeved in the outer tube, and the inner tube can move up and down relative to the outer tube, the top end of the inner tube is connected with a seat cushion of the bicycle, and the inner tube is usually connected with an air pressure rod, the outer tube is connected with a frame of the bicycle, so that a user can push the inner tube by the air pressure rod through a control valve of the air pressure rod to adjust the height of the seat tube structure, and the bicycle can be suitable for users with different heights.

However, the structure of the conventional seat tube structure in which the inner tube, the outer tube and the pneumatic rod are connected to each other is quite complicated, such as the "pneumatic/hydraulic lifting seat tube with adjustable overall length" in taiwan patent No. M589738, which has high technical difficulty in assembly, resulting in high cost of the seat tube; moreover, the piston is easily worn out when the piston and the tubular cylinder are deflected relatively, thereby shortening the service life of the seat tube.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above problems of the prior art, the present invention provides a structure of a pneumatic rod built in a bicycle seat tube, which is designed by the following people: the assembling structure of the bicycle seat tube is simplified to reduce the assembling process; the utility model discloses a secondary aim at: the service life of the air pressure rod and the seat tube is prolonged.

The utility model discloses a reach above-mentioned purpose, utilize following technical means:

a structure of a built-in pneumatic rod for a bicycle seat tube comprises: an upper tube, which is provided with a bearing seat at the top end for connecting a bicycle seat cushion, and the bottom end of the upper tube is provided with a first combining part; the lower pipe is provided with a sealing sleeve at the top end, a cam component at the bottom end, and the upper pipe is sleeved by the lower pipe and the sealing sleeve to form a telescopic seat pipe structure; and a pneumatic rod, wherein a lower pipe plug of a tubular cylinder body is provided with a second combining part, the second combining part is combined with the first combining part of the upper pipe, so that the pneumatic rod is combined between the upper pipe and the lower pipe, and the exposed end of a long thimble arranged on the pneumatic rod is exposed out of the bottom end of an axle rod and props against the cam component of the lower pipe.

The first combining part of the upper pipe is set as an internal thread, and the second combining part of the air pressure rod is set as an external thread.

A smooth mechanism is arranged between the upper pipe and the lower pipe so as to facilitate the relative linear displacement of the upper pipe and the lower pipe.

The long thimble of the pneumatic rod forms a valve end corresponding to a piston in the pneumatic rod.

The cam assembly is arranged by wire, namely, an operator is arranged on the bicycle handlebar, a pull rope is arranged between the operator and the cam assembly, and the cam assembly is actuated by the operator through the pull rope.

The pressure bar and the lower tube together form an oil chamber.

The utility model discloses borrow by above-mentioned technical means, can reach following efficiency:

the utility model discloses borrow and directly embolia and establish this top tube formation module and fix a position by this atmospheric pressure stick, according to the life of extension atmospheric pressure stick, reduce the degree of difficulty of bicycle seat pipe equipment, and reduce its equipment process, according to reducing its manufacturing cost.

Drawings

Fig. 1 is a perspective view of the structure of the air pressure bar built in the bicycle seat tube of the present invention.

FIG. 2 is a cross-sectional view of the structure of the air spring inside the seat tube of the bicycle of the present invention.

FIG. 3 is a partial cross-sectional view of the structure of the air spring inside the seat tube of the bicycle of the present invention.

FIG. 4 is a schematic view of the overall actuation of the structure of the air pressure bar built in the bicycle seat tube according to the present invention.

FIG. 5 is an operation diagram of the cam assembly with the structure of the air pressure bar built in the bicycle seat tube according to the present invention.

FIG. 6 is a schematic view of an embodiment of a structure of a pneumatic rod built in a bicycle seat tube according to the present invention.

Description of reference numerals: a-a structure of a gas pressure bar built in the seat tube; 1, feeding a pipe; 11-a bearing seat; 12-a first binding moiety; 2-lower tube; 21-sealing sleeve; 22-a cam assembly; 23-oil chamber; 3-air pressure bar; 31-a tubular cylinder; 32-a pipe plug; 33-an axle spindle; 34-long thimble; 341-exposed end; 342-a valve end; 35-a piston; 4-a smoothing mechanism; 5-a bicycle; 51-an operator; 52-pull cord.

Detailed Description

First, referring to fig. 1 and 2, the present invention relates to a structure of a pneumatic rod in a bicycle seat tube, which is mainly to directly insert the pneumatic rod into the upper tube to form a module for positioning, so as to prevent the relative deflection between the piston and the tubular cylinder, thereby simplifying the structure of the bicycle seat tube to reduce the assembly process and the manufacturing cost.

Wherein the structure A of the seat tube with an internal pressure rod comprises: an upper tube 1, a lower tube 2, a pneumatic rod 3 and/or a slide mechanism 4, which will be described in detail below with reference to the drawings.

As shown in fig. 3, the top end of the upper tube 1 is provided with a seat 11 for receiving a bicycle seat, and the bottom end of the upper tube 1 is provided with a first engaging portion 12, wherein the first engaging portion 12 is preferably formed as an internal thread.

The top end of the lower tube 2 is provided with a sealing sleeve 21, the bottom end of the lower tube is provided with a cam assembly 22, and the upper tube 1 is sleeved with the lower tube 2 and the sealing sleeve 21 to form a telescopic seat tube structure.

The pneumatic rod 3 is provided with a second combining portion at the lower pipe plug 32 of a tubular cylinder 31, and the second combining portion is preferably an external thread, and the position of the second combining portion overlaps with the first combining portion 12 due to mutual matching in the figure, so that no reference mark is marked, and the second combining portion is combined with the first combining portion 12 of the upper pipe 1, so that the pneumatic rod 3 is combined between the upper pipe 1 and the lower pipe 2, and the exposed end 341 of a long thimble 34 arranged on the pneumatic rod 3 is exposed out of the bottom end of an axle rod 33 and butts against the cam component 22 of the lower pipe 2; the long thimble 34 of the pneumatic rod 3 is formed with a valve end 342 corresponding to a piston 35 in the pneumatic rod 3; furthermore, the pressure bar 3 and the lower tube 2 together form an oil chamber 23, and a plurality of hydraulic oil channels are provided in cooperation with the sealing sleeve 21, so as to form the oil-gas hybrid bicycle seat tube.

The slide mechanism 4 is disposed between the upper tube 1 and the lower tube 2 for facilitating the relative linear displacement between the upper tube 1 and the lower tube 2, and the slide mechanism 4 further includes a positioning post, a bearing bush, etc. made of a slide material.

The utility model discloses the structure provides the preferred solution of built-in atmospheric pressure stick of bicycle seat pipe, and it is shown as figure 4 again to cooperate, mainly borrows by directly embolias and ties this top tube 1 formation module with the second joint portion on this atmospheric pressure stick 3, then after combining together with this low tube 2, this smooth mechanism 4, pours into high-pressure gas or/and hydraulic oil into this atmospheric pressure stick 3 inside or/and this low tube 2 inside grease chamber 23 again, just becomes the utility model discloses built-in atmospheric pressure stick and have height-adjustable seat pipe, so the structure can prevent that the piston 35 of this atmospheric pressure stick 3 from producing relative deflection rather than tubulose cylinder body 31 and prolonging the life of this atmospheric pressure stick 3, can reduce the degree of difficulty of bicycle seat pipe equipment simultaneously to and reduce its equipment process, according to reduce its manufacturing cost.

When the seat tube of the present invention is installed on a bicycle, as shown in fig. 5 and 6, the cam assembly 22 can be controlled by wire, i.e. an operator 51 is disposed on the handle of the bicycle, and a pull cord 52 is disposed between the operator 51 and the cam assembly 22, so that the operator 51 is operated to pull the pull cord 52 to actuate the cam assembly 22 to drive the long thimble 34 to open the valve end 372, so as to apply a force (usually the weight of a rider sitting on the seat cushion) to allow the flow of high-pressure gas or/and hydraulic oil to adjust the actuation of the piston 35 inside the air pressure rod 3, and the air pressure rod 3 can drive the upper tube 1 and the lower tube 2 to extend and retract together, thereby adjusting the height of the seat tube.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A structure of a built-in pressure bar for a bicycle seat tube, comprising:

an upper tube, which is provided with a bearing seat at the top end for connecting a bicycle seat cushion, and the bottom end of the upper tube is provided with a first combining part;

the lower pipe is provided with a sealing sleeve at the top end, a cam component is arranged at the bottom end, and the lower pipe and the sealing sleeve are sleeved with the upper pipe to form a telescopic seat pipe structure; and

the air pressure rod is arranged between the upper pipe and the lower pipe, and the exposed end of a long thimble arranged on the air pressure rod is exposed out of the bottom end of an axle rod and props against the cam component of the lower pipe.

2. The built-in air pressure bar structure of bicycle seat tube as claimed in claim 1, wherein the first coupling portion of the upper tube is an internal thread and the second coupling portion of the air pressure bar is an external thread.

3. The built-in air pressure bar structure of bicycle seat tube as claimed in claim 1, wherein a slide mechanism is provided between the upper tube and the lower tube.

4. The built-in pneumatic rod structure of claim 1, wherein the long pin of the pneumatic rod forms a valve end corresponding to a piston inside the pneumatic rod.

5. The structure of claim 1, wherein the cam assembly is controlled by a wire, i.e., an operator is provided on the bicycle handlebar, and a pull cord is provided between the operator and the cam assembly, through which the operator drives the cam assembly.

6. The structure of claim 1, wherein the air pressure bar and the inner portion of the down tube form an oil chamber together.