CN205841585U - A kind of piston type spring brake cylinder - Google Patents
A kind of piston type spring brake cylinder Download PDFInfo
- Publication number
- CN205841585U CN205841585U CN201620653877.5U CN201620653877U CN205841585U CN 205841585 U CN205841585 U CN 205841585U CN 201620653877 U CN201620653877 U CN 201620653877U CN 205841585 U CN205841585 U CN 205841585U
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- spring
- piston
- cylinder
- piston rod
- brake
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Abstract
This utility model relates to a kind of brake device for car, especially discloses a kind of piston type spring brake cylinder, and this spring brake cylinder includes that cylinder body, described cylinder body include spring cavity, driving chamber and parking chamber, is provided with brake spring in spring cavity；Being provided with piston between spring cavity and driving chamber, described brake spring is connected with piston；It is provided with middle casing between described driving chamber and parking chamber；Described middle casing is provided with parking chamber air inlet and driving chamber air inlet；Being provided with piston rod, diaphragm and cylinder internal respiration valve in described cylinder body, described piston rod is hollow structure, and described piston rod one end is connected with piston, and the other end is connected with diaphragm, and described cylinder internal respiration valve is positioned at piston rod.A kind of piston type spring brake cylinder disclosed in this utility model reduces the risk in air in impurity entrance cylinder body, extends the physical life of equipment, the most built-in breather valve simple in construction, easy accessibility.
Description
Technical field
This utility model relates to a kind of brake device for car, especially a kind of piston type spring brake cylinder.
Background technology
Spring brake cylinder is parts conventional in brake system of car, traditional spring brake cylinder external respiration structure.In phase
To when using under rugged environment, easily occur that the various impurity in human bodies such as coming off, aging, and air are easily accessible braking
In cylinder, the service life of part each in cylinder is made a big impact.Additionally the connection between middle casing, diaphragm and right end cap is adopted
By the friction tight form of clip and screw fastening, alignment difficulties when mounted between this form various piece, installation accuracy is difficult to
Ensure, and the sealing effectiveness between contact surface is the most bad.
Summary of the invention
The purpose of this utility model is to provide a kind of piston type spring brake cylinder, joins between each parts of this spring brake cylinder
Closing closely, good airproof performance, service life is long；Between right end cap, middle casing and diaphragm, installation accuracy is high, good seal performance
For achieving the above object, this utility model adopts the following technical scheme that a kind of piston type spring brake cylinder, including cylinder
Body, described cylinder body includes spring cavity, driving chamber and parking chamber, is provided with brake spring in spring cavity；Spring cavity and driving chamber it
Between be provided with piston, described brake spring is connected with piston；It is provided with middle casing between described driving chamber and parking chamber；Described
Middle casing be provided with parking chamber air inlet and driving chamber air inlet；Exhale in being provided with piston rod, diaphragm and cylinder in described cylinder body
Inhaling valve, described piston rod is hollow structure, and described piston rod one end is connected with piston, and the other end and film contact are described
Cylinder internal respiration valve be positioned at piston rod.
The mode of breather valve is set in using cylinder, greatly reduces the risk in impurity enters cylinder body in air, extend
The physical life of equipment, the most built-in breather valve simple in construction, easy accessibility.
As preferably, described cylinder internal respiration valve include sealing shroud, return spring and check valve, sealing shroud and piston rod it
Between fixing connect, described check valve is located in sealing shroud, and described return spring is between sealing shroud and check valve, unidirectional
The center of seat and sealing shroud is respectively equipped with the installing hole of return spring.
As preferably, described sealing shroud side wall upper part is provided with grab；Grab is used for preventing from sliding outside check valve.
As preferably, described check valve is provided with some apertures away from the end face of return spring；Arranging of aperture can make
Check valve pressurized when receiving the pressure from pressure medium chamber is uniform.
As preferably, between described valve body and cylinder body, it is provided with O-ring seals and y-shaped ring.
Accompanying drawing explanation
Illustrate for accompanying drawing below:
Fig. 1 is the structural representation of a kind of piston type spring brake cylinder of the present embodiment；
Fig. 2 is the partial enlarged drawing of the cylinder internal respiration valve of a kind of piston type spring brake cylinder of the present embodiment.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
Embodiment
A kind of piston type spring brake cylinder as depicted, including cylinder body 1, described cylinder body 1 includes spring cavity 11, driving
Chamber 9 and parking chamber 10, be provided with brake spring 2 in spring cavity 11；Piston 3 it is provided with between spring cavity 11 and parking chamber 10, described
Brake spring 2 is connected with piston 3；It is provided with middle casing 6 between described driving chamber 9 and parking chamber 10；Described middle casing 6
It is provided with parking chamber air inlet 4 and driving chamber air inlet 5；Piston rod 8, diaphragm and cylinder internal respiration valve 7 it is provided with in described cylinder body 1,
Described piston rod 8 is hollow structure, and described piston rod 8 one end contacts with piston 3, and the other end is connected with diaphragm, described
Cylinder internal respiration valve 7 is positioned at piston rod 8；The mode of breather valve is set in using cylinder, greatly reduces impurity in air and enter cylinder
Risk in body 1, extends the physical life of equipment, the most built-in breather valve simple in construction, easy accessibility, it is simple to maintenance；
Described cylinder internal respiration valve 7 include sealing shroud 71, return spring 75, check valve 74 and push rod 73, sealing shroud 71 and piston rod 8 it
Between fixing connect, described check valve 74 is located in sealing shroud 71, and described return spring 75 is positioned at sealing shroud 71 and check valve
Between 74, the center of unidirectional seat and sealing shroud 71 is respectively equipped with the installing hole of return spring 75；Described sealing shroud 71 side wall upper part
Being provided with grab 72, grab 72 is used for preventing from sliding outside check valve；Described check valve 74 is provided with away from the end face of return spring 75
Some apertures, arranging of aperture can make check valve pressurized when receiving the pressure from pressure medium chamber uniform；Described valve body
And it is provided with O-ring seals and y-shaped ring between cylinder body 1.
When vehicle releases parking braking, gas unnecessary in spring cavity 11 passes through piston rod 8, in the middle of end count big envelope 71 and
Check valve 74 side, flows to the aperture of piston rod 8, enters driving chamber 9 and enters air.
When carrying out parking braking, spring cavity 11 need to carry out QI invigorating, the gas in driving chamber 9 aperture by piston rod 8, warp
Check valve 74 and the gap of sealing shroud 71, then enter spring cavity 11 through piston rod 8, it is ensured that the work well of piston 3.
Being provided with O-ring seals and y-shaped ring between piston rod 8 and valve body, O-ring seals plays sealing function, prevents two
Collaborating and gas leak phenomenon between chamber.Y-shaped ring plays the one-way sealing in driving chamber 9 and parking chamber 10, lacking of spring cavity 11
Amount residual air flow to, by the single effect of y-shaped ring, chamber 9 of driving a vehicle, and enters air, sets in the middle of check valve 74 and sealing shroud 71
Having return spring, when damaging occurs in y-shaped ring, the compressed air in driving chamber 9 is made with on check valve 74, overcomes return bullet
The elastic force of spring closes valve, prevents the compressed air in driving chamber 9 from entering spring cavity 11, makes automobile normal running.
Above-described a kind of piston type spring brake cylinder, reduces the risk in impurity enters cylinder body in air, extends
The physical life of equipment, the most built-in breather valve simple in construction, easy accessibility.
In a word, the foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all
Any amendment, equivalent and the improvement etc. made within spirit of the present utility model and principle, should be included in this practicality
Within novel protection domain.
Claims (4)
1. a piston type spring brake cylinder, including cylinder body (1), it is characterised in that: it is provided with spring cavity in described cylinder body (1)
(11), driving chamber (9) and parking chamber (10), be provided with brake spring (2) in spring cavity (11)；Spring cavity (11) and driving chamber (9)
Between be provided with piston (3), described brake spring (2) is connected with piston (3)；Described driving chamber (9) and parking chamber (10) it
Between be provided with middle casing (6)；Described middle casing (6) is provided with parking chamber air inlet (4) and driving chamber air inlet (5)；Described
Cylinder body (1) in be provided with piston rod (8), diaphragm and cylinder internal respiration valve (7), described piston rod (8) is hollow structure, described
Piston rod (8) one end is connected with piston (3), the other end and film contact, and described cylinder internal respiration valve (7) is positioned at piston rod (8)
In.
A kind of piston type spring brake cylinder the most according to claim 1, it is characterised in that: described cylinder internal respiration valve (7)
Including sealing shroud (71), return spring (75), check valve (74) and push rod (73), solid between sealing shroud (71) and piston rod (8)
Fixed connection, it is interior that sealing shroud (71) is located at by described check valve (74), and described return spring (75) is positioned at sealing shroud (71) and list
Between valve (74), the center of unidirectional seat and sealing shroud (71) is respectively equipped with the installing hole of return spring (75).
A kind of piston type spring brake cylinder the most according to claim 2, it is characterised in that: on described sealing shroud (71) sidewall
Portion is provided with grab (72).
A kind of piston type spring brake cylinder the most according to claim 2, it is characterised in that: described check valve (74) is away from returning
The end face of position spring (75) is provided with some apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653877.5U CN205841585U (en) | 2016-06-28 | 2016-06-28 | A kind of piston type spring brake cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653877.5U CN205841585U (en) | 2016-06-28 | 2016-06-28 | A kind of piston type spring brake cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841585U true CN205841585U (en) | 2016-12-28 |
Family
ID=57620638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620653877.5U Active CN205841585U (en) | 2016-06-28 | 2016-06-28 | A kind of piston type spring brake cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457037A (en) * | 2020-04-27 | 2020-07-28 | 浙江万安科技股份有限公司 | Breather valve for spring brake chamber and spring brake chamber |
-
2016
- 2016-06-28 CN CN201620653877.5U patent/CN205841585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457037A (en) * | 2020-04-27 | 2020-07-28 | 浙江万安科技股份有限公司 | Breather valve for spring brake chamber and spring brake chamber |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |