CN201825029U - Power-assisting master cylinder with double center valves - Google Patents
Power-assisting master cylinder with double center valves Download PDFInfo
- Publication number
- CN201825029U CN201825029U CN2010205419593U CN201020541959U CN201825029U CN 201825029 U CN201825029 U CN 201825029U CN 2010205419593 U CN2010205419593 U CN 2010205419593U CN 201020541959 U CN201020541959 U CN 201020541959U CN 201825029 U CN201825029 U CN 201825029U
- Authority
- CN
- China
- Prior art keywords
- central valve
- center valve
- power
- master cylinder
- leather cup
- 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 power-assisting master cylinder with double center valves. The power-assisting master cylinder comprises a return spring, a center valve core mandril, a center valve limit pin and a cylinder body, wherein the center valve core mandril is sequentially sleeved by the return spring, an elastic check ring, a center valve spring, a center valve leather cup and a leather cup, a second piston is mounted outside the center valve core mandril, the end part of the center valve core mandril is connected with the center valve limit pin, and a seal ring is mounted between the cylinder body and an oil inlet connector. The utility model has the advantages of simple structure, reasonable design and low cost; and the reliability of the power-assisting master cylinder can be improved on the premise of lower cost.
Description
Technical field
The utility model relates to a kind of vacuum servo master cylinder, especially a kind of center check valve-type master brake cylinder of uncompensated hole.
Background technology
At present, in the brake system of ESC is housed, frequent fluctuation can take place in the fluid pressure in the master brake cylinder, the change frequency height of fluid pressure, meanwhile piston also frequently moves accordingly relative to cylinder body, for compensating brake master cylinder, primary cup is in the crank motion process, be subjected to the scratch of compensation orifice inevitably, the primary cup undue wear will take place at the compensation orifice place and be cut phenomenon, thereby cause master brake cylinder to lose efficacy.In addition, the power-assisted master cylinder is owing to have compensation orifice, and its complex structure is processed and installation inconvenience, and this has also increased the cost of power-assisted master cylinder.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, because uncompensated hole, its primary cup life-span is improved like this, two central valve power-assisted master cylinders that power-assisted master cylinder global reliability improves.
In order to achieve the above object, the technical solution adopted in the utility model is: comprise retracing spring, central valve spool push rod, central valve locating dowel pin and cylinder body, on the central valve spool push rod successively preface be socketed with retracing spring, circlip, central valve spring, central valve leather cup and leather cup, second piston is equipped with in the outside, central valve spool push rod end and central valve locating dowel pin join, and seal ring is loaded between cylinder body and the fuel inlet neck.
The utility model has the advantages that:
Simple in structure, reasonable in design, cost is low, can increase the reliability of power-assisted master cylinder under the prerequisite of cost-cutting.
Description of drawings
Fig. 1 is the utility model structural representation;
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model comprises retracing spring 1, central valve spool push rod 7, central valve locating dowel pin 9 and cylinder body 11, on the central valve spool push rod 7 successively preface be socketed with retracing spring 1, circlip 2, central valve spring 3, central valve leather cup 4 and leather cup 6, second piston 5 is equipped with in the outside, central valve spool push rod 7 ends and central valve locating dowel pin 9 join, and seal ring 8 is loaded between cylinder body 11 and the fuel inlet neck 10.
The utility model adopts center check valve master brake cylinder, and the central valve spool push rod 7 in second piston 5 and retracing spring 1, circlip 2, central valve spring 3, central valve leather cup 4 and the leather cup 6 adorned on it and central valve locating dowel pin 9 replace the effect of compensation orifice.Under the brake off state, second piston 5 resets, and central valve spool push rod 7 withstands on the central valve locating dowel pin 9, and central valve is opened, and at this moment brake chamber keeps being communicated with the feed flow chamber, and hydraulic oil drives the master brake cylinder motion, plays the brake off effect.Under braking mode, second piston 5 is moved to the left, and central valve spool push rod 7 off center valve locating dowel pins 9 so central valve is closed under retracing spring 1 and hydraulic oil effect, have cut off the path in brake chamber and feed flow chamber, play the function of braking.
Claims (1)
1. two central valve power-assisted master cylinder, comprise retracing spring (1), central valve spool push rod (7), central valve locating dowel pin (9) and cylinder body (11), it is characterized in that: on the central valve spool push rod (7) successively preface be socketed with retracing spring (1), circlip (2), central valve spring (3), central valve leather cup (4) and leather cup (6), second piston (5) is equipped with in the outside, central valve spool push rod (7) end and central valve locating dowel pin (9) join, and seal ring (8) is loaded between cylinder body (11) and the fuel inlet neck (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205419593U CN201825029U (en) | 2010-09-26 | 2010-09-26 | Power-assisting master cylinder with double center valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205419593U CN201825029U (en) | 2010-09-26 | 2010-09-26 | Power-assisting master cylinder with double center valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201825029U true CN201825029U (en) | 2011-05-11 |
Family
ID=43963581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205419593U Expired - Fee Related CN201825029U (en) | 2010-09-26 | 2010-09-26 | Power-assisting master cylinder with double center valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201825029U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418757A (en) * | 2011-09-24 | 2012-04-18 | 芜湖众发汽车制动系统有限公司 | Double-piston braking main cylinder with limit pins at oil inlet |
| CN106545558A (en) * | 2016-10-30 | 2017-03-29 | 山西汾西重工有限责任公司 | A kind of position-limit mechanism and position-limit mechanism release method |
-
2010
- 2010-09-26 CN CN2010205419593U patent/CN201825029U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418757A (en) * | 2011-09-24 | 2012-04-18 | 芜湖众发汽车制动系统有限公司 | Double-piston braking main cylinder with limit pins at oil inlet |
| CN106545558A (en) * | 2016-10-30 | 2017-03-29 | 山西汾西重工有限责任公司 | A kind of position-limit mechanism and position-limit mechanism release method |
| CN106545558B (en) * | 2016-10-30 | 2018-08-07 | 山西汾西重工有限责任公司 | A kind of position-limit mechanism and position-limit mechanism release method |
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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: 20110511 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |