CN203306000U - Automatic assistant trailer valve - Google Patents
Automatic assistant trailer valve Download PDFInfo
- Publication number
- CN203306000U CN203306000U CN2013203593461U CN201320359346U CN203306000U CN 203306000 U CN203306000 U CN 203306000U CN 2013203593461 U CN2013203593461 U CN 2013203593461U CN 201320359346 U CN201320359346 U CN 201320359346U CN 203306000 U CN203306000 U CN 203306000U
- Authority
- CN
- China
- Prior art keywords
- piston
- valve body
- cavity
- upper cover
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses an automatic assistant trailer valve which comprises a valve body, wherein an upper cover is arranged at the end part of the valve body; a piston is arranged between the upper cover and the inner part of the valve body; a first cavity is formed between the upper cover and the piston; the first cavity is connected with a first control opening in the upper cover; a ring-shaped second cavity is formed in the middle of the piston; two ports communicated with the inner part of the piston are formed in the second cavity; the second cavity is connected with a second control opening in the valve body; an air outlet is formed in the valve body; a controller is arranged in the piston; the controller is in sealed connection with the inner wall of the piston in a sliding manner; a seal ring is arranged at the lower end of the piston; the lower end of the piston is in movable sealed connection with the inner wall of the valve body. The valve has the advantages that the structure is simple and exquisite; the abrasion of tyres is reduced during slow braking; the brake force can be automatically increased during fast braking.
Description
Technical field
The utility model belongs to vehicle component, especially relates to a kind of autoamtic boosting trailer valve.
Background technology
Servo-brake relay valve on existing vehicle, when light brake, easily make the tire severe wear, but when hard braking, can not increase braking force, lack of staying power, major cause is the structure aspects Shortcomings, make the structural piston pressure of vehicle brake excessive, for once the property air feed, require further improvement.
The utility model content
The purpose of this utility model is for a kind of autoamtic boosting trailer valve is provided, exquisiteness simple in structure, and exquisiteness simple in structure, when light brake, reduce the wearing and tearing of tire, when hard braking, automatically increases braking force.
For achieving the above object, the technical solution of the utility model is:
The autoamtic boosting trailer valve, comprise valve body, end at valve body is provided with upper cover, between the inside of upper cover and valve body, be provided with piston, it is characterized in that: between upper cover and piston, form the first cavity, described the first cavity with on cover first control mouth and be connected setting, at the middle part of piston, form annular the second cavity, on the second cavity, be provided with 2 ports that communicate with internal piston, described the second cavity connects second on valve body and controls mouth, on valve body, be provided with the gas outlet, in piston, be provided with controller, between described controller and piston inner wall, forming sliding sealing is connected, the lower end of described piston is provided with seal ring, with valve interior wall, forming movable sealing is connected.
The sliding sealing that the utility model is mentioned, refer to that the sealing circle can form sealing when not sliding, and also can form sealing when sliding.
The beneficial effects of the utility model: the utility model exquisiteness simple in structure, exquisiteness simple in structure, when light brake, reduce the wearing and tearing of tire, when hard braking, automatically increases braking force.
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
With reference to accompanying drawing 1, the present embodiment discloses a kind of autoamtic boosting trailer valve, comprise valve body 1, in the end of valve body 1, be provided with upper cover 2, between the inside of upper cover 2 and valve body 1, be provided with piston 3, it is characterized in that: between upper cover 1 and piston 3, form the first cavity 4, described the first cavity 4 is connected setting with the first control mouth 5 on upper cover 2, at the middle part of piston 3, form annular the second cavity 6, on the second cavity 6, be provided with 2 ports 7 that communicate with piston 3 inside, described the second cavity 6 connects second on valve body 1 and controls mouth 8, on valve body 1, be provided with gas outlet 9, in piston 3, be provided with controller 10, between described controller 10 and piston 3 inwalls, forming sliding sealing is connected, the lower end of described piston 3 is provided with seal ring, with valve body 1 inwall, forming movable sealing is connected.
The foregoing is only embodiment of the present utility model, not to the restriction of this case design, all equivalent variations of doing according to the design key of this case, all fall into the protection domain of this case.
Claims (1)
1. autoamtic boosting trailer valve, comprise valve body, end at valve body is provided with upper cover, between the inside of upper cover and valve body, be provided with piston, it is characterized in that: between upper cover and piston, form the first cavity, described the first cavity with on cover first control mouth and be connected setting, at the middle part of piston, form annular the second cavity, on the second cavity, be provided with 2 ports that communicate with internal piston, described the second cavity connects second on valve body and controls mouth, on valve body, be provided with the gas outlet, in piston, be provided with controller, between described controller and piston inner wall, forming sliding sealing is connected, the lower end of described piston is provided with seal ring, with valve interior wall, forming movable sealing is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203593461U CN203306000U (en) | 2013-06-22 | 2013-06-22 | Automatic assistant trailer valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203593461U CN203306000U (en) | 2013-06-22 | 2013-06-22 | Automatic assistant trailer valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203306000U true CN203306000U (en) | 2013-11-27 |
Family
ID=49612227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203593461U Expired - Fee Related CN203306000U (en) | 2013-06-22 | 2013-06-22 | Automatic assistant trailer valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203306000U (en) |
-
2013
- 2013-06-22 CN CN2013203593461U patent/CN203306000U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20140622 |
|
| EXPY | Termination of patent right or utility model |