CN212616298U

CN212616298U - Guide structure with sealing function

Info

Publication number: CN212616298U
Application number: CN202021045497.6U
Authority: CN
Inventors: 罗公祥; 钟广臣; 傅英; 李若功
Original assignee: Shandong Nahe Auto Parts Co ltd
Current assignee: Shandong Nahe Auto Parts Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-02-26
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a belong to braking system technical field, specifically be a guide structure of sealed function in area, it includes: two-chamber air chamber, push rod, guide bush, sealing washer and gasket, set up the push rod in the two-chamber air chamber cavity through-hole, two-chamber air chamber cavity through-hole sets up the guide bush with push rod hookup location top, the guide bush includes boss and anti-groove barb, the guide bush bottom sets up the sealing washer, the sealing washer bottom sets up the gasket, prevents the obscission to can compress tightly middle sealing washer, enable the inside effectual sealing that forms of two-chamber air chamber, at the vehicle braking in-process, guarantee the normal work of two-chamber air chamber and carry out effectual braking, the combined design of guide bush, sealing washer, gasket can realize the sealed effect of through-hole between the two-chamber air chamber, plays fixed limiting displacement simultaneously, prevents that the sealing washer from producing in air chamber.

Description

Guide structure with sealing function

Technical Field

The utility model relates to a braking system technical field specifically is a guide structure of sealed function in area.

Background

The spring brake air chamber is widely used for an automobile brake system, is arranged on an axle of an automobile and provides braking force for the automobile. It mainly consists of two parts: the front cavity is used for service braking, and the rear cavity is used for auxiliary braking and parking braking; the front cavity is a skin membrane cavity, and the back cavity is a spring cavity. In the process of braking, the push rod inside is pushed to the front cavity from the rear cavity through air pressure, the middle of the push rod penetrates through the through hole between the two cavities, and the next braking operation is carried out after the push rod is pushed out, so that the braking is finished. Because the front cavity and the rear cavity are sealed separately, air leakage is not allowed, and air pressure at two sides is different. But a through hole is needed to realize the back and forth movement of the middle push rod between the two chambers.

In the traditional technology, the through holes between the double-cavity air chambers are easy to leak air, so that the better sealing effect cannot be achieved, and the work of the double-cavity air chambers is influenced in the braking process, so that the braking is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a guide structure of sealed function in area can play the guide effect of push rod in the air chamber, prevents that the push rod from squinting in release work. The combined design of the guide bushing, the sealing ring and the gasket can realize the sealing effect of the through hole between the double-cavity air chambers, and simultaneously play a role in fixing and limiting, so that the sealing ring is prevented from falling off in the air chamber braking process.

For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:

a guide structure with a sealing function, comprising: two-chamber air chamber, push rod, guide bush, sealing washer and gasket, set up the push rod in the two-chamber air chamber cavity through-hole, two-chamber air chamber cavity through-hole sets up the guide bush with push rod hookup location top, the guide bush includes boss and anti-groove barb, the guide bush bottom sets up the sealing washer, the sealing washer bottom sets up the gasket.

As a preferred scheme of area sealing function's guide structure, wherein: boss evenly distributed all sets up the anti-groove barb in guide bush top circumference position, the boss outside, guide bush, boss and anti-groove barb integrated into one piece make.

As a preferred scheme of area sealing function's guide structure, wherein: the push rod is matched with the guide bushing, the sealing ring and the gasket.

As a preferred scheme of area sealing function's guide structure, wherein: the inner wall of the through hole of the double-cavity air chamber is provided with a groove matched with the reverse groove barb.

Compared with the prior art: spacing messenger sealing washer through guide bush and packing ring is fixed, this guide bush boss outer edge area anti-groove barb, in carrying out the installation, this guide bush fills in the through-hole between two chambeies of air chamber, the anti-groove barb is received elastic deformation and is compressed, fill in behind the through-hole, the anti-groove barb return, thereby make the direction sealing ring card inside the through-hole, prevent the obscission, and can compress tightly middle sealing washer, enable the inside effectual sealing that forms of two-chamber of air chamber, in vehicle braking process, guarantee two-chamber air chamber's normal work and carry out effectual braking, the guide bush, the sealing washer, the sealed effect of through-hole between the two-chamber air chamber can be realized to the combined design of gasket, play fixed limiting displacement simultaneously, prevent that the sealing washer from producing in air chamber braking process and.

Drawings

FIG. 1 is a schematic view of the installation and use structure of the present invention;

fig. 2 is the schematic diagram of the distribution structure of the sealing ring of the present invention.

In the figure: 100 dual chamber air chamber, 200 push rod, 300 guide bush, 310 boss, 320 reverse groove barb, 400 sealing ring, 500 gasket.

Detailed Description

The invention is further explained below with reference to the drawings:

in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a guide structure of sealed function in area can play the guide effect of push rod in the air chamber, prevents that the push rod from squinting in release work. The combined design of guide bush, sealing washer, gasket can realize the sealed effect of through-hole between the two-chamber air chamber, plays fixed limiting displacement simultaneously, prevents that the sealing washer from producing in the air chamber braking process and droing, please refer to fig. 1 and fig. 2, include: a dual-chamber air chamber 100, a push rod 200, a guide bush 300, a seal ring 400 and a gasket 500;

referring to fig. 1 and 2 again, a push rod 200 is disposed in a through hole of a chamber of the dual chamber air chamber 100, the push rod 200 is pushed from the rear chamber to the front chamber by air pressure, the middle part of the push rod passes through the through hole between the two chambers, and the push rod 200 is pushed out to perform the next braking operation, thereby completing the braking.

Referring to fig. 1 and 2 again, the guide bushing 300 includes a boss 310 and an inverse groove barb 320, specifically, the guide bushing 300 is disposed at the top of the connecting position of the chamber through hole of the dual-chamber air chamber 100 and the push rod 200, the boss 310 is uniformly distributed at the circumferential position of the top of the guide bushing 300, the inverse groove barb 320 is disposed on the outer side of the boss 310, the guide bushing 300, the boss 310 and the inverse groove barb 320 are integrally formed, the sealing ring 400 is disposed at the bottom of the guide bushing 300, and the gasket 500 is disposed at the bottom of the sealing ring 400.

When concrete use, the spacing messenger sealing washer of guide bush 300 and packing ring is fixed, the boss 310 outward flange of this guide bush 300 takes counter-groove barb 320, in carrying out the installation, this guide bush 300 fills in the through-hole between two chambeies of air chamber, counter-groove barb 320 receives elastic deformation and compresses, fill in the through-hole after, counter-groove barb 320 return, thereby make guide bush 300 card inside the through-hole, the phenomenon of coming off prevents to appear, and can compress tightly middle sealing washer 400, enable the inside effectual sealing that forms of two-chamber air chamber 100, in vehicle braking process, guarantee two-chamber air chamber's normal work and carry out effectual braking.

Boss 310 evenly distributed is in guide bushing 300 top circumference position, the boss 310 outside all sets up anti-groove barb 320, guide bushing 300, boss 310 and anti-groove barb 320 integrated into one piece make, make things convenient for guide bushing 300's installation fixed.

The push rod 200 is matched with the guide bushing 300, the sealing ring 400 and the gasket 500, so that the push rod 200 can move conveniently, and the connection sealing performance is improved through the guide bushing 300, the sealing ring 400 and the gasket 500.

The inner wall of the through hole of the chamber of the double-chamber air chamber 100 is provided with a groove matched with the reverse groove barb 320, so that the reverse groove barb 320 can be conveniently buckled.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a guide structure of sealed function in area which characterized in that includes: two-chamber air chamber (100), push rod (200), direction bush (300), sealing washer (400) and gasket (500), set up push rod (200) in two-chamber air chamber (100) cavity through-hole, two-chamber air chamber (100) cavity through-hole sets up direction bush (300) with push rod (200) hookup location top, direction bush (300) are including boss (310) and anti-groove barb (320), direction bush (300) bottom sets up sealing washer (400), sealing washer (400) bottom sets up gasket (500).

2. The guide structure with the sealing function according to claim 1, wherein the bosses (310) are uniformly distributed at the circumferential positions of the top of the guide bushing (300), reverse-groove barbs (320) are arranged outside the bosses (310), and the guide bushing (300), the bosses (310) and the reverse-groove barbs (320) are integrally formed.

3. The guide structure with sealing function of claim 1, wherein the push rod (200) is installed with the guide bushing (300), the sealing ring (400) and the gasket (500) in a mutually matched manner.

4. The guiding structure with sealing function of claim 1, wherein the inner wall of the through hole of the chamber of the dual-chamber air chamber (100) is provided with a groove matched with the reverse groove barb (320).