CN2439566Y - Piston type braking actuating mechanism - Google Patents
Piston type braking actuating mechanism Download PDFInfo
- Publication number
- CN2439566Y CN2439566Y CN 00227604 CN00227604U CN2439566Y CN 2439566 Y CN2439566 Y CN 2439566Y CN 00227604 CN00227604 CN 00227604 CN 00227604 U CN00227604 U CN 00227604U CN 2439566 Y CN2439566 Y CN 2439566Y
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- piston
- leather cup
- push rod
- inner 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
Links
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- Braking Arrangements (AREA)
Abstract
The utility model discloses a piston type brake wheel cylinder which is composed of an outer cylinder body, an inner cylinder body, a piston, a leather cup, and a push rod, wherein, the inner cylinder body is in threaded connection with the outer cylinder body. The leather cup is tightly pressed in the outer cylinder body through the inner cylinder body. High pressure oil entering from a main oil cylinder causes the leather cup to be deformed to push the piston. The push rod pushes a brake shoe to generate brake. Because the leather cup does not move and does not leak, the operating life of the leather cup is greatly increased. Therefore, the brake wheel cylinder has oil leakage resistance effect and long operating life of the leather cup effect.
Description
The utility model relates to a kind of piston type wheel cylinder.
At present, the effect of wheel cylinder is to change fluid pressure into brake shoe open mechanical force, and brake shoe is pressed on the brake drum, realizes wheel braking.Two all-aluminium pistons are housed in the wheel cylinder of existing piston formula master cylinder, and two sealing cups utilize spring compression to lean against on the piston, make the motion together all the time of leather cup and piston.This structure makes leather cup be easy to generate wearing and tearing and during leakage of oil, particularly leather cup second-rate, distortion more easy to wear and leakage of oil makes brake out of control.
It is a kind of oil-proof that the purpose of this utility model is to provide, the piston type wheel cylinder of leather cup long working life.
For achieving the above object, outer cylinder body, inner cylinder body, piston, leather cup, push rod are formed in the piston type wheel cylinder of the present utility model, outer cylinder body and two leather cups surround the grease chamber, between two leather cups, be provided with spring, between inner cylinder body and the outer cylinder body for being threaded, leather cup is pressed in the outer cylinder body by inner cylinder body, in inner cylinder body, be provided with two-piston, on piston, be provided with adjusting nut, two-piston is respectively near two leather cups, the bulb of push rod stretches on the recess at the piston back side, is provided with length adjustment device on push rod.
After adopting such structure, because leather cup is pressed in the outer cylinder body by inner cylinder body, in inner cylinder body, be provided with two-piston, two-piston is respectively near two leather cups, it is mobile that leather cup is not produced, and do not produce leakage, makes the leather cup distortion promote piston after high pressure oil enters the grease chamber, after reaching push rod, drive brake shoe and open.
Fig. 1 is the structural representation of the concrete a kind of embodiment of the utility model.
Piston type wheel cylinder of the present utility model as shown in Figure 1, by outer cylinder body 1, inner cylinder body 4, piston 2, leather cup 3, push rod 6 is formed, outer cylinder body 1 and two leather cups 3 surround grease chamber 9, between two leather cups, be provided with spring 5, between inner cylinder body 4 and the outer cylinder body 1 for being threaded, leather cup is pressed in the outer cylinder body by inner cylinder body, in inner cylinder body, be provided with piston 2, on piston 2, be provided with adjusting nut 7, two-piston 2 is respectively near two leather cups 3, the bulb of push rod 6 stretches on the recess at piston 2 back sides, and push rod 6 is provided with length adjustment device 10, and the other end of push rod 6 is connected with brake shoe.During braking, the high pressure oil of Master cylinder body enters in the grease chamber 9 of wheel cylinder from oilhole, and oil pressure overcomes the elastic force of brake shoe, and leather cup 3 distortion make two-piston 2 outer moving, and by push rod 6, brake shoe is pressed in produces braking on the brake drum.During loosen the brake, under the effect of return spring 5, piston 2 moves inward, and makes fluid flow back to master cylinder, and braking is removed.By adjusting nut 7 piston 2 and distance between the leather cup 3 are reached mutually and be adjacent to, by length adjustment device 10 distance between push rod 6 and the piston 2 is reached and to promote brake shoe.Thereby obtain to make wheel cylinder not leak the effect of oil.
Claims (1)
1, a kind of piston type wheel cylinder, by outer cylinder body (1), inner cylinder body (4), piston (2), leather cup (3), push rod (6) is formed, outer cylinder body (1) and two leather cups (3) surround grease chamber (9), between two leather cups, be provided with spring (5), it is characterized in that: between inner cylinder body (4) and the outer cylinder body (1) for being threaded, leather cup (3) is pressed in the outer cylinder body (1) by inner cylinder body (4), in inner cylinder body (4), be provided with piston (2), on piston (2), be provided with adjusting nut (7), two-piston (2) is respectively near two leather cups (3), the bulb of push rod (6) stretches on the recess at piston (2) back side, is provided with length adjustment device (10) on push rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00227604 CN2439566Y (en) | 2000-03-21 | 2000-03-21 | Piston type braking actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00227604 CN2439566Y (en) | 2000-03-21 | 2000-03-21 | Piston type braking actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2439566Y true CN2439566Y (en) | 2001-07-18 |
Family
ID=33591210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00227604 Expired - Fee Related CN2439566Y (en) | 2000-03-21 | 2000-03-21 | Piston type braking actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2439566Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476542B (en) * | 2008-11-25 | 2011-05-11 | 上海应用技术学院 | Adjustable off-course brake of wind motor |
| CN102392861A (en) * | 2011-07-22 | 2012-03-28 | 铁岭兴科精密仪器有限责任公司 | Safe brake device of oil pumping unit |
-
2000
- 2000-03-21 CN CN 00227604 patent/CN2439566Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476542B (en) * | 2008-11-25 | 2011-05-11 | 上海应用技术学院 | Adjustable off-course brake of wind motor |
| CN102392861A (en) * | 2011-07-22 | 2012-03-28 | 铁岭兴科精密仪器有限责任公司 | Safe brake device of oil pumping unit |
| CN102392861B (en) * | 2011-07-22 | 2013-03-20 | 铁岭兴科精密仪器有限责任公司 | Safe brake device of oil pumping unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |