CN201610131U - Improved double-diaphragm spring brake air chamber - Google Patents
Improved double-diaphragm spring brake air chamber Download PDFInfo
- Publication number
- CN201610131U CN201610131U CN201020000866XU CN201020000866U CN201610131U CN 201610131 U CN201610131 U CN 201610131U CN 201020000866X U CN201020000866X U CN 201020000866XU CN 201020000866 U CN201020000866 U CN 201020000866U CN 201610131 U CN201610131 U CN 201610131U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- mandrel
- compressed air
- self
- brake cylinder
- 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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Abstract
The utility model relates to a brake air chamber, in particular to an improved double-diaphragm spring brake air chamber which comprises a mandrel, a self-lubrication type seal ring, a middle housing and a guide part. The guide part and the self-lubrication type seal ring are placed between the mandrel and the middle housing, thereby leading the mandrel not to be in direct contact with the middle housing. Compared with the prior art, the improved double-diaphragm spring brake air chamber adopts the guide part and the self-lubrication type seal ring, thereby reducing the aluminum consumption of the middle housing, reducing the manufacturing cost of the brake air chamber assembly, increasing the wear resistance of the mandrel and the middle housing, prolonging the service life of the seal ring and significantly improving the safety of a vehicle brake system.
Description
Technical field
The utility model relates to a kind of compressed air brake cylinder, and particularly a kind of improved type double-diaphragm spring brake chamber is particularly useful for motor vehicle braking system.
Background technology
Number of patent application is that 200520106510 Chinese utility model discloses a kind of double-diaphragm spring brake chamber.The Parking chamber of this compressed air brake cylinder with the driving chamber be two independently working cavities, and constitute described Parking chamber with the driving chamber hermetically-sealed construction mainly comprise mandrel, O-ring seals, middle shell.Therefore, described mandrel and middle shell are realized sealing by the amount of compression of O-ring seals; When work in the Parking chamber, the endoporus that relies on the middle shell that moves axially of mandrel is realized guiding.
Yet because the axial motion of mandrel directly relies on the endoporus guiding of middle shell, in order to improve guiding accurately, interior hole length needs longer, and the mandrel radial dimension is bigger, has increased the material usage of middle shell; Secondly, since the mandrel of steel directly with the middle shell endoporus mutual friction mutually of aluminum, in friction of motion, can produce a large amount of scrap metals, cut can appear in the outer fenestra of mandrel, this is fatal damage to the O-ring seals on the middle shell, can cause O-ring seals to lose efficacy in advance, influence the vehicle driving braking safety; Once more, mandrel is the measure of actv. guiding for want of, monolateral or eccentric wear can occur; In addition, lubricate, O-ring seals and mandrel dry friction can occur, cause O-ring seals distortion, scaling because O-ring seals lacks, and then the assembly air leakage failure.
Summary of the invention
The purpose of this utility model is to provide a kind of improved type double-diaphragm spring brake chamber, its middle shell endoporus that has overcome existing double-diaphragm spring brake chamber is long, mandrel and middle shell direct friction, middle shell lead problems such as deficiency and O-ring seals lack of lubrication to mandrel, by employing guide collar and self-lubricating formula seal ring, thus the manufacturing cost of reduction compressed air brake cylinder assembly; Reduce the abrasion loss of middle shell and mandrel; Improve the service life of seal ring.
The purpose of this utility model realizes by following technical solution: a kind of improved type double-diaphragm spring brake chamber is provided, and it comprises mandrel, self-lubricating formula seal ring, middle shell and targeting part.Described targeting part and self-lubricating formula seal ring place between mandrel and the middle shell, make not direct contact middle shell of mandrel.
Preferably, described targeting part comprises the guide collar that at least one wear-resistant plastic is made, so that improve the resistance to abrasion of guide collar.In most preferred embodiment of the present utility model, described targeting part comprises the guide collar that two wear-resistant plastics are made, its advantage has shortened the length of middle shell endoporus simultaneously for can improve guiding accuracy, reduced make middle shell use the aluminium amount.
Preferably, described self-lubricating formula seal ring comprises the fixing ring of at least one band oil resevoir, helps like this guaranteeing that seal ring obtains sufficient lubrication, has promoted the service life of seal ring, has guaranteed the leak tightness of Parking chamber with the driving chamber.In most preferred embodiment of the present utility model, described self-lubricating formula seal ring comprises the fixing ring of a band oil resevoir, so that save the space.
Improved type double-diaphragm spring brake chamber of the present utility model compared with prior art adopted targeting part and self-lubricating formula seal ring, reduced make middle shell use the aluminium amount, compressed air brake cylinder assembly manufacturing cost is reduced; The resistance to abrasion of mandrel and middle shell increases; Improve the service life of seal ring; The safety of motor vehicle braking system significantly improves.
Description of drawings
In order to make the utility model be convenient to understand, most preferred embodiment of the present utility model is described in conjunction with the accompanying drawings now.
Fig. 1 is the part sectional view of the most preferred embodiment of improved type double-diaphragm spring brake chamber of the present utility model.For brevity, the front case of described compressed air brake cylinder part illustrates.
Fig. 2 is the partial enlarged drawing of improved type double-diaphragm spring brake chamber of the present utility model.
Reference numeral: 1. mandrel, 2. fixing ring, 3. middle shell, 4. guide collar, 5. oil resevoir, 6. Parking chamber, 7. driving chamber
The specific embodiment
Accompanying drawing shows the most preferred embodiment of improved type double-diaphragm spring brake chamber of the present utility model.Below in conjunction with accompanying drawing the utility model is done detailed description.The word in the description orientation that is adopted herein " on ", D score, " left side ", " right side " etc. all be for the convenience that illustrates based on the orientation shown in the drawing in the accompanying drawing, these orientation may be because the disposing way of device and different in actual device.
As shown in the figure, two guide collar 4 and the fixing ring 2 of described double-diaphragm spring brake chamber place between mandrel 1 and the middle shell 3, make not direct contact middle shell 3 of mandrel 1.Fixing ring 2 is built-in with the oil resevoir 5 that can store consistent lubricant.
When the work of Parking chamber 6, because the differential pressure action of diaphragm spring both sides, mandrel 1 produces moving axially from left to right by two guide collar 4, and then drives the elements action (not shown) in the driving chamber 7.In the moving process of mandrel 1, the grease in the oil resevoir 5 has played lubricating effect to the friction between mandrel 1 and the fixing ring 2.
Abovely describe in detail in conjunction with preferred embodiment of the present utility model, but this is not to be to restriction of the present utility model, every foundation technical spirit of the present utility model is to any simple modification that above embodiment did, equivalent variations and modification all still belong to the scope of technical solutions of the utility model.
Claims (8)
1. improved type double-diaphragm spring brake chamber, it comprises mandrel, self-lubricating formula seal ring, middle shell, it is characterized in that described compressed air brake cylinder also comprises targeting part, described targeting part and self-lubricating formula seal ring place between mandrel and the middle shell, make not direct contact middle shell of mandrel.
2. compressed air brake cylinder as claimed in claim 1 is characterized in that: described targeting part comprises at least one guide collar.
3. compressed air brake cylinder as claimed in claim 1 is characterized in that: described guide collar adopts wear-resistant plastic to make.
4. compressed air brake cylinder as claimed in claim 2 is characterized in that: described guide collar adopts wear-resistant plastic to make.
5. compressed air brake cylinder as claimed in claim 1 is characterized in that: described self-lubricating formula seal ring comprises the seal ring of at least one band oil resevoir.
6. compressed air brake cylinder as claimed in claim 2 is characterized in that: described self-lubricating formula seal ring comprises the seal ring of at least one band oil resevoir.
7. compressed air brake cylinder as claimed in claim 3 is characterized in that: described self-lubricating formula seal ring comprises the seal ring of at least one band oil resevoir.
8. compressed air brake cylinder as claimed in claim 4 is characterized in that: described self-lubricating formula seal ring comprises the seal ring of at least one band oil resevoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020000866XU CN201610131U (en) | 2010-01-12 | 2010-01-12 | Improved double-diaphragm spring brake air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020000866XU CN201610131U (en) | 2010-01-12 | 2010-01-12 | Improved double-diaphragm spring brake air chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610131U true CN201610131U (en) | 2010-10-20 |
Family
ID=42960764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020000866XU Expired - Fee Related CN201610131U (en) | 2010-01-12 | 2010-01-12 | Improved double-diaphragm spring brake air chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610131U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761596B (en) * | 2010-01-12 | 2012-07-25 | 瑞立集团瑞安汽车零部件有限公司 | Improved double-diaphragm spring brake chamber |
-
2010
- 2010-01-12 CN CN201020000866XU patent/CN201610131U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761596B (en) * | 2010-01-12 | 2012-07-25 | 瑞立集团瑞安汽车零部件有限公司 | Improved double-diaphragm spring brake chamber |
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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: 20101020 Termination date: 20150112 |
|
| EXPY | Termination of patent right or utility model |