CN112049876A

CN112049876A - Air bag for pushing membrane piston

Info

Publication number: CN112049876A
Application number: CN201910492082.9A
Authority: CN
Inventors: 朱江; 李峻涛; 郭海广
Original assignee: Hebei Asteria Technology Co ltd
Current assignee: Hebei Asteria Technology Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-12-08

Abstract

The invention relates to the technical field of brakes on automobiles, in particular to an air bag for pushing a membrane piston in a brake, which is used in an automobile brake and comprises an air bag body (1) and a pressurized fluid inlet (2), wherein the air bag body (1) is of a circular ring structure, one end of the air bag body (1) is hermetically connected with the pressurized fluid inlet (2), the other end of the air bag body (1) is provided with an annular groove (3), and the shape of the annular groove (3) is adapted to the shape of the membrane piston contacted with the annular groove. The air bag for pushing the membrane piston can increase the effective stroke, and the thrust of the air bag is not influenced by the pushing distance in the effective stroke range, so that the brake is more compact.

Description

Air bag for pushing membrane piston

Technical Field

The invention relates to the technical field of brakes on automobiles, in particular to an air bag for pushing a membrane piston in a brake.

Background

Numerous challenges exist in the design of annular disc brakes. One is to be able to generate a suitable clamping force using an actuator that fits within the space available for the brake. Annular disc brakes are often provided in vehicles, and these are usually mounted within or very close to a respective wheel of the vehicle. Even in the case of large vehicles, the space available for each brake is relatively limited. In addition, vehicle manufacturers are continually seeking increasingly compact brakes to reduce this space. There is always room for improvement in the design of annular disc brakes when it is desired to design an annular disc brake that requires connection to a source of primary power using a pneumatic system as the brake. Particularly, when the air bag pushes the membrane piston, the problems that the effective stroke is increased and the air bag pushing force is not influenced by the pushing distance in the effective stroke range need to be solved.

Disclosure of Invention

In order to solve the above problems, the present invention is directed to provide an airbag that can increase an effective stroke and prevent an airbag thrust from being affected by a thrust distance in an effective stroke range, thereby making a brake more compact, in view of the shortcomings of the related art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a promote gasbag of membrane piston, uses in the automotive brake, the gasbag include gasbag body and pressurized fluid entry, the gasbag body be ring annular structure, the one end and the pressurized fluid entry sealing connection of gasbag body, the other end of gasbag body be equipped with annular groove, annular groove's shape suits rather than the shape of the membrane piston that contacts.

Further, the airbag body is made of cord fabric reinforced rubber.

The air bag for pushing the membrane piston has the advantages that the effective stroke can be increased, the thrust of the air bag is not influenced by the pushing distance in the effective stroke range, and the brake is more compact.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a schematic view of the initial working position of the apparatus of the present invention;

FIG. 5 is a schematic view of the final operating position of the apparatus of the present invention;

in the figure: 1. an airbag body; 2. a pressurized fluid inlet; 3. an annular groove.

Detailed Description

The following detailed description of the embodiments of the present invention is provided to enable those skilled in the art to more clearly understand the embodiments of the present invention, and the present invention is not limited by the embodiments and the accompanying drawings.

As shown in fig. 1, 2 and 3, an airbag for pushing a membrane piston is used in an automobile brake, and comprises an airbag body 1 and a pressurized fluid inlet 2, wherein the airbag body 1 is in a circular structure, one end of the airbag body 1 is hermetically connected with the pressurized fluid inlet 2, the other end of the airbag body 1 is provided with an annular groove 3, the annular groove 3 and the outer cylindrical surface of the airbag body 1 form a flanging state, the circular arc structure increases the rubber flexing performance, and the effective stroke of the membrane piston can be increased by adopting the flanging form; the shape of the annular groove 3 is adapted to the shape of the membrane piston contacted with the annular groove, so that the air bag always keeps the same contact area with the membrane piston in the expansion process, and the thrust of the air bag is not influenced by the pushing distance in the effective stroke range. Preferably, the airbag body 1 is made of cord fabric reinforced rubber, and the cord fabric reinforced rubber increases the strength of the airbag under high pressure.

The operation of the invention is such that pressurized fluid enters the air bag body 1 through the pressurized fluid inlet 2, the air bag pushes the membrane piston to move from the initial position shown in fig. 4 to the final working position of the air bag shown in fig. 5 under the pressure of the pressurized fluid, and the air bag thrust remains constant throughout the active stroke of air bag pushing.

The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, which is still within the scope of the invention.

Claims

1. The utility model provides a promote gasbag of membrane piston, uses in the automotive brake, its characterized in that, the gasbag include gasbag body (1) and pressurized fluid entry (2), gasbag body (1) be ring annular structure, the one end and the pressurized fluid entry (2) sealing connection of gasbag body (1), the other end of gasbag body (1) be equipped with annular groove (3), the shape of annular groove (3) suits rather than the shape of the membrane piston that contacts.

2. A membrane piston propelling airbag according to claim 1, wherein the airbag body (1) is made of cord reinforced rubber.