CN212928784U

CN212928784U - Novel automobile brake protection valve

Info

Publication number: CN212928784U
Application number: CN202021005539.3U
Authority: CN
Inventors: 张桂禄; 马宝玲; 王玮丰; 李立涛; 李雅茹
Original assignee: Hebei Chinaust Automotive Plastics Co Ltd
Current assignee: Hebei Chinaust Automotive Plastics Co Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-04-09
Anticipated expiration: 2030-06-04

Abstract

A novel automobile brake protection valve comprises a valve body, a valve cover, a return spring and a sealing core body, wherein the valve body is of a cylindrical hollow structure, one end of the valve body is open, the other end of the valve body is provided with an air inlet thin neck, the open end of the valve body is sleeved on the valve cover, the valve cover is provided with an external thread at the sleeved end of the valve body, the valve body is matched with the valve cover and is provided with an internal thread matched with the valve cover, and the valve cover and the valve body are fixed with each other; the check ring is arranged in the valve body and positioned between the return spring and the valve cover, the check ring is provided with an external thread, and the check ring is fixed in the valve body through the external thread and screwed to the end of the internal thread; the threaded structure realizes the integrated assembly of the valve body, the valve cover and the check ring, is convenient to seal, has stronger reliability, and is convenient to disassemble and repair and replace subsequent parts; the retainer ring is screwed to the end of the internal thread, so that the assembly precision of other parts in the valve body is ensured, the reliability of the protection valve is improved, and the safety of braking is ensured.

Description

Novel automobile brake protection valve

Technical Field

The utility model relates to an automobile parts field especially relates to a novel car braking protection valve.

Background

In the existing automobile brake protection valve structure, a valve body and a valve cover are mutually connected and fixed in an interference nesting mode, the sealing performance of the valve body and the valve cover is ensured by adopting a multilayer nesting structure and a mode of arranging a plurality of sealing rings, the structure is complex, and the disassembly and subsequent maintenance of the protection valve are inconvenient; and secondly, the return spring and other internal parts are usually directly supported on the stepped structure on the inner wall of the valve body, so that the assembly precision is not high, and the reliability and the safety of the automobile brake protection valve are greatly influenced.

SUMMERY OF THE UTILITY MODEL

For the integral type assembly that realizes car braking protection valve structure, guarantee its inside parts assembly precision, solve its structure complicacy and be difficult to dismantle the change scheduling problem of maintenance and spare part, the utility model provides a novel car braking protection valve.

The utility model provides a novel automobile brake protection valve, includes valve body, valve gap, return spring and sealed core, the valve body is tube-shape hollow structure, and one end is uncovered, and the other end is for admitting air thin neck, and the opening end cover of valve body is located on the valve gap, the valve gap is provided with the thin neck of giving vent to anger, return spring and sealed core set up in the inside of valve body, return spring is located between valve gap and the sealed core.

Further, the valve gap is established the end with the cover of valve body and is provided with the external screw thread, the valve body cooperation the valve gap is provided with the internal thread that matches with it, valve gap and valve body pass through helicitic texture interconnect fixed, realize the integral type assembly of valve body, valve gap, and the reliability is higher, be convenient for sealed, convenient to detach and follow-up spare part's maintenance and change.

Further, still be provided with a retaining ring in the valve body, the retaining ring is made by the polyethylene material, but is not limited to this, the retaining ring is located between return spring and the valve gap, the retaining ring is provided with the external screw thread, the retaining ring is fixed in the valve body through the external screw thread and revolves to the internal screw thread end for return spring provides effectual support through the retaining ring, and its assembly accuracy that can effectively guarantee return spring revolves to the internal screw thread end.

Furthermore, the root of the valve cover provided with the external thread is provided with an annular groove, an O-shaped ring is arranged in the annular groove, and the O-shaped ring is made of a nitrile rubber material, but is not limited to the annular groove, so that the assembly tightness of the valve body and the valve cover is ensured.

Specifically, an air chamber is arranged between the check ring and the sealing core body, and the return spring is arranged in the air chamber.

Furthermore, the air inlet thin neck is provided with an air inlet hole, the air outlet thin neck is provided with an air outlet hole, and the air inlet hole and the air outlet hole are communicated with the air chamber.

Furthermore, the check ring is of a hollow structure, and the hollow structure of the check ring is matched with the return spring to be provided with a limit groove.

Furthermore, the sealing core body is provided with a sealing retaining shoulder, a limiting bulge is arranged on the contact surface of the sealing retaining shoulder and the return spring, and a piston shaft is arranged on the other surface of the sealing retaining shoulder.

Furthermore, the limiting shaft is located in the air inlet and is in sliding fit with the air inlet, and the sealing retaining shoulder is located in the air chamber and shields the air inlet.

Specifically, return spring is the turriform spring, return spring one end inlays in the spacing inslot of retaining ring, and the other end is located sealed fender shoulder's spacing arch with the cover.

Furthermore, the valve body and the valve cover are both regular hexagon structures similar to nuts, so that the valve body and the valve cover can be conveniently detached and the internal parts can be conveniently repaired and replaced.

Furthermore, the surface of the thin neck of giving vent to anger and the thin neck of admitting air all is provided with the barb structure, and the pipeline of being convenient for cup joints with braking protection valve can prevent effectively that both from breaking away from.

The utility model discloses a carry out work through following principle: when the automobile is braked, high-pressure gas enters from the air inlet hole, the sealing core body is pushed to compress the return spring structure, so that a gap is formed between the sealing retaining shoulder and the inner wall of the air chamber, the high-pressure gas enters into the air chamber and flows into a subsequent brake pipeline through the air outlet hole, and the automobile is braked; when the brake pipeline leaks, the sealing core body effectively seals the air inlet hole under the action of the return spring, so that the pipeline is ensured to keep a certain pressure, and the influence on the driving safety caused by automatic braking in the driving process of the automobile is prevented.

Advantageous effects

The novel automobile brake protection valve disclosed by the utility model realizes the integrated assembly of the valve body and the valve cover by using the thread structure, and compared with the traditional interference nesting structure, the thread structure has higher reliability, is more convenient to seal and is more convenient to maintain and replace subsequent parts; the helicitic texture of retaining ring and revolve the retaining ring to the internal thread bottom, help realizing the accurate location of inside spare part for the bellied bearing structure of traditional valve body inner wall, make return spring location more accurate, also avoided the direct contact wear with the valve body inner wall of return spring simultaneously, can effectual assurance braking safety.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:

FIG. 1 is a schematic view of the operating principle of an automobile hand brake system;

FIG. 2 is a front view of the structure of the preferred embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a front view of the retainer ring of FIG. 2;

in fig. 1: 1, an air compressor; 2 an air handling unit; 3, an air cylinder; 4, a one-way valve; 5, a parking hand valve; 6 a relay valve; 7, a spring air chamber; 8 brake

In fig. 2, 3, 4: a valve body-10; a valve cover-20; a return spring-30; a seal core-40; an air inlet narrow neck-11; air outlet thin neck-21; a retainer ring-50; an annular groove-22; o-ring-60; a gas chamber-12; an air inlet hole-13; an air outlet-23; a limiting groove-51; a sealing shoulder-41; a limiting bulge-42; a piston shaft-43; barb-70.

Detailed Description

The following description of the preferred embodiments of the present invention will enable one skilled in the art to make and use the present invention as described below, and will more fully understand the innovative features and attendant advantages of the present invention.

As shown in fig. 1, which is a schematic view of the working principle of a hand brake system of an automobile, in the brake system, the "air-cut brake" has higher safety performance compared with the conventional brake, that is: when the hand valve 5 is stopped for braking, the pressure in the spring air chamber 7 is relieved, and the vehicle is in a braking state under the action of the spring on the brake 8; when the hand valve 5 is stopped to release the brake, the spring air chamber 7 is filled with high-pressure air rapidly, and the spring is pushed open to release the brake.

The utility model is used as a protection element in the brake pipeline, and has the function of ensuring that the gas in the gas storage cylinder 3 is transferred into the spring air chamber 7 when the automobile normally runs, and ensuring that the automobile normally runs; when the pipeline or the element in front of the relay valve 6 is damaged to cause pressure relief, the pressure in the spring air chamber 7 can be ensured not to be released, certain pressure is kept, and the phenomenon that the pressure relief of the spring air chamber 7 causes self-braking in the driving process is avoided, so that the driving safety is influenced.

As shown in fig. 2 and 3, for the utility model discloses preferred embodiment structure schematic diagram, a novel car braking protection valve, including valve body 10, valve gap 20, return spring 30 and seal core 40, valve body 10 is tube-shape hollow structure, and one end is uncovered, and the other end is provided with air inlet thin neck 11, and the open end cover of valve body 10 is located on valve gap 20, valve gap 20 is provided with air outlet thin neck 21, return spring 30 and seal core 40 set up in the open inside of valve body 10, return spring 30 is located between valve gap 20 and the seal core 40.

Further, valve gap 20 establishes the end with the cover of valve body 10 and is provided with the external screw thread, valve body 10 cooperation valve gap 20 is provided with the internal thread that matches with it, valve gap 20 and valve body 10 are fixed through helicitic texture interconnect, realize valve body 10, valve gap 20's integral type assembly, and the reliability is higher, be convenient for sealed, convenient to detach and follow-up spare part's maintenance and change.

Further, a retainer ring 50 is further arranged in the valve body 10, the retainer ring 50 is made of a preferable polyethylene material, but is not limited to the above, the retainer ring 50 is located between the return spring 30 and the valve cover 20, the retainer ring 50 is provided with an external thread, the retainer ring 50 is fixed in the valve body 10 through the external thread and is screwed to the end of the internal thread, so that the return spring 30 directly provides effective support through the retainer ring 50, and the assembly precision of the return spring 30 can be effectively ensured when the retainer ring is screwed to the end of the internal thread.

Further, the root of the external thread of the valve cover 20 is provided with an annular groove 22, and an O-ring 60 is further arranged in the annular groove 22, wherein the O-ring 60 is preferably made of a nitrile rubber material, but not limited thereto, so that the assembly tightness of the valve body 10 and the valve cover 20 can be ensured.

Specifically, an air chamber 12 is arranged between the retainer ring 50 and the seal core body 40, and the return spring 30 is arranged in the air chamber 12.

Further, the air inlet thin neck 11 is provided with an air inlet hole 13, the air outlet thin neck 21 is provided with an air outlet hole 23, and the air inlet hole 13 and the air outlet hole 23 are both communicated with the air chamber 12.

Further, as shown in fig. 4, the retainer ring 50 is a hollow structure, and the hollow structure of the retainer ring 50 is provided with a limiting groove 51 in cooperation with the return spring 30.

Further, the sealing core body 40 is provided with a sealing stop shoulder 41, a contact surface of the sealing stop shoulder 41 and the return spring 30 is provided with a limit protrusion 42, and the other surface is provided with a piston shaft 43.

Further, the piston shaft 43 is located in the air inlet 13 and is disposed in sliding fit with the air inlet 13, and the sealing shoulder 41 is located in the air chamber 12 and covers the air inlet 13.

Specifically, referring to fig. 3 and 4, the return spring 30 is a tower-shaped spring, one end of the return spring 30 is embedded in the limiting groove 51 of the retainer ring 50, and the other end of the return spring is sleeved on the limiting protrusion 42 of the sealing retainer shoulder 41.

Further, the valve body 10 and the valve cover 20 are of a regular hexagonal structure similar to a nut, and are preferably made of an aluminum alloy material, but not limited thereto, and the structure is strong and light, and also facilitates the disassembly of the valve body 10 and the valve cover 20 and the maintenance and replacement of internal components.

Furthermore, the outer surfaces of the air outlet thin neck 21 and the air inlet thin neck 11 are both provided with a triangular or trapezoidal barb 70 structure, but not limited to this, so that the sleeving connection of the brake pipeline and the brake protection valve is facilitated, and the separation of the brake pipeline and the brake protection valve can be effectively prevented.

The novel automobile brake protection valve disclosed by the utility model realizes the integrated assembly of the valve body and the valve cover by using the thread structure, and compared with the traditional interference nesting structure, the thread structure has higher reliability, is more convenient to seal and is more convenient to maintain and replace subsequent parts; the threaded structure of the check ring revolves the check ring to the bottom of the internal thread, and the accurate positioning of internal parts is facilitated to be realized, so that the return spring is more accurately positioned relative to a traditional supporting structure for the inner wall of the valve body is raised, the reliability of the protection valve is improved, meanwhile, the direct contact abrasion between the return spring and the inner wall of the valve body is avoided, and the safety in the running process can be effectively guaranteed.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited by these descriptions; to the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection.

Claims

1. The utility model provides a novel car braking protection valve, includes valve body, valve gap, return spring and sealed core, its characterized in that: the valve body is of a cylindrical hollow structure, one end of the valve body is open, the other end of the valve body is an air inlet thin neck, the open end of the valve body is sleeved on the valve cover, the valve cover is provided with an air outlet thin neck, the return spring and the sealing core body are arranged inside the valve body, and the return spring is located between the valve cover and the sealing core body;

the valve cover is provided with an external thread at the sleeving end with the valve body, the valve body is provided with an internal thread matched with the valve cover in a matching way, and the valve cover and the valve body are connected and fixed with each other through a thread structure;

the check ring is arranged between the return spring and the valve cover and is provided with an external thread, and the check ring is fixed in the valve body through the external thread and screwed to the end of the internal thread.

2. The novel automobile brake protection valve according to claim 1, characterized in that: the valve cover is provided with an annular groove at the root of the external thread, and an O-shaped ring is arranged in the annular groove.

3. The novel automobile brake protection valve according to claim 1, characterized in that: an air chamber is arranged between the retainer ring and the sealing core body, and the return spring is arranged in the air chamber.

4. The novel automobile brake protection valve according to claim 1, characterized in that: the air outlet thin neck is provided with an air outlet hole, the air inlet thin neck is provided with an air inlet hole, and the air inlet hole and the air outlet hole are communicated with the air chamber.

5. The novel automobile brake protection valve according to claim 1, characterized in that: the check ring is of a hollow structure, and the hollow structure of the check ring is matched with the return spring to be provided with a limit groove.

6. The novel automobile brake protection valve according to claim 1, characterized in that: the sealing core body is provided with a sealing retaining shoulder, a limiting bulge is arranged on the contact surface of the sealing retaining shoulder and the return spring, and a piston shaft is arranged on the other surface of the sealing retaining shoulder.

7. The novel automobile brake protection valve according to claim 6, characterized in that: the piston shaft is positioned in the air inlet and is arranged in a sliding fit manner with the air inlet, and the sealing retaining shoulder is positioned in the air chamber and is matched with the stepped inner wall of the valve body to seal the air inlet.

8. The novel automobile brake protection valve according to claim 1, characterized in that: the return spring is a tower-shaped spring, one end of the return spring is embedded in the limiting groove of the retainer ring, and the other end of the return spring is sleeved on the limiting protrusion of the sealing retaining shoulder.

9. The novel automobile brake protection valve according to claim 1, characterized in that: the valve body and the valve cover are both polygonal structures similar to nuts.

10. The novel automobile brake protection valve according to claim 1, characterized in that: the outer surface of the thin neck of giving vent to anger and the thin neck of admitting air all is provided with barb structure.