CN2558559Y - Center valve type brake main cylinder - Google Patents
Center valve type brake main cylinder Download PDFInfo
- Publication number
- CN2558559Y CN2558559Y CN 02218139 CN02218139U CN2558559Y CN 2558559 Y CN2558559 Y CN 2558559Y CN 02218139 CN02218139 CN 02218139 CN 02218139 U CN02218139 U CN 02218139U CN 2558559 Y CN2558559 Y CN 2558559Y
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- push rod
- cylinder
- locating dowel
- 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 - Lifetime
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The utility model relates to a center-valve master cylinder of automobile braking system, consisting of a cylinder body, a piston, a return spring, and a center valve. The center valve is fixed in the shouldered valve at the end of the piston, which consists of a lifter rod, a seal ring, a return spring and a limited location pin. The center valve is opened or closed with the movement of the piston to control the braking hydraulic pressure in the braking valve, which can avoid the friction between a rubber ring and a compensated hole and prolong the service life of the master cylinder.
Description
Technical field
The utility model relates to a kind of central valve formula master brake cylinder in the brake system of car technology.
Prior art
Existing single, double pipeline master brake cylinder is for behind the piston return, and in time the difference of pressure of balancing brake chamber and feed liquor pipeline is processed with one to two compensation orifice on the casing wall in skin wrist stroke section.Because piston comes and goes back and forth repeatedly, the frequent and compensation orifice friction of skin wrist, skin wrist rapid wear, life-span is short, the high-grade automobile of ABS especially is housed, at low adhesion value road surface glancing impact, primary cup is crank motion near compensation orifice, and high-pressure pulsating very easily destroys the skin wrist of master brake cylinder, braking failure occurs.
Summary of the invention
The utility model provides a kind of central valve formula master brake cylinder, is beneficial to overcome the defective of the skin wrist cracky in the master brake cylinder, maintains good deceleration and stopping performance.
The technical solution of the utility model that realizes above-mentioned this purpose is to be assemblied in that design has central valve on the piston in the control chamber in the cylinder body, the utility model central valve formula master brake cylinder mainly includes cylinder body, piston, locating dowel pin, and central valve, piston packing is installed in the brake chamber, with the locating dowel pin free-running fit, described central valve has the valve push rod, valve seals, valve pull back spring, jump ring, piston head end in the brake chamber of cylinder body offers the shoulder inner chamber, and the valve push rod is assemblied in the shoulder inner chamber, valve push rod head end attaching valve seals, the valve pull back spring connects valve seals and jump ring, the other end of valve push rod passes the piston land inner chamber, and on the locating dowel pin of apical grafting in inner chamber of cylinder block, liquid inlet channel connects feed flow chamber and shoulder inner chamber.
The seal ring of central valve of the present utility model moves and the effect of valve pull back spring with piston, can close, be communicated with liquid inlet channel and brake chamber, therefore can on cylinder wall, not process compensation orifice, reduce the wearing and tearing of skin wrist, improve the service life and the automobile brake perfrmance of master brake cylinder.
The drawing explanation
Fig. 1 is the utility model central valve formula master brake cylinder topology view.
Fig. 2 is single central valve formula dual line braking master cylinder view.
Fig. 3 is two central valve formula dual line braking master cylinder views.
The 1-cylinder body, 2-brake chamber, 3-jump ring, 4-shoulder inner chamber, 5-valve pull back spring, 6-valve seals, 7-valve push rod, 8-piston, 9-locating dowel pin, 10-liquid inlet channel, 11-pressure spring, 12-feed flow chamber.
The specific embodiment
Piston 8 sealings of the present utility model are assemblied in the brake chamber of cylinder body, head at it is processed with shoulder inner chamber 4,7 activities of valve push rod are installed in the shoulder inner chamber 4, the attaching of head outside face interference fit has valve seals 6, the jump ring 3 that valve pull back spring 5 connects on valve seals 6 and the interior accent, valve push rod 7 other ends pass shoulder inner chamber 4 and connect with locating dowel pin 9 movable top that are located by connecting on the cylinder body 1, and locating dowel pin 9 vertically passes piston hole, with piston 8 free-running fits, consult Fig. 1.
The utility model has single central valve formula dual line braking master cylinder and two central valve formula dual line braking master cylinder, and the specific embodiment is consulted Fig. 2 and Fig. 3.The piston 8 of master brake cylinder is return under pressure spring 11 effects, is in non-braking mode, on the valve push rod 7 apical grafting locating dowel pins 9.Central valve is opened, and valve seals 6 forms the gap with the inwall of shoulder inner chamber 4, and brake chamber 2 is communicated with feed flow chamber 12 by liquid inlet channel 10, and two cavity pressures balance each other.When piston 8 moves to left, overcome pressure spring 11 elastic force, piston 8 moves to left and enters braking mode, valve push rod 7 leaves locating dowel pin 9, and under the effect of braking liquid and valve pull back spring 5, valve push rod 7 moves to right, seal ring 6 on it is close on the shoulder inner chamber 4 interior ancient piece of jade, round, flat and with a hole in its centres, and central valve is closed.Piston nose brake chamber 2 forms the sealing load chamber, and the brake fluid pressure in the brake chamber 2 raises, and enters into the front and rear wheel brake wheel cylinder, slows down or brake.
Claims (2)
1, a kind of central valve formula master brake cylinder, it includes cylinder body, piston, pull back spring and central valve, piston packing is installed in the brake chamber, with the locating dowel pin free-running fit, central valve is by the valve push rod, valve seals, the valve pull back spring, jump ring constitutes, it is characterized in that piston (8) head end has shoulder cavity (4), valve push rod (7) is assemblied in the shoulder cavity (4), is equipped with valve seals (6) on valve push rod (7) head, valve pull back spring (5) connects valve seals (6) and jump ring (3), and another crown of valve push rod (7) connects locating dowel pin (9).
2, central valve formula master brake cylinder according to claim 1 is characterized in that locating dowel pin (9) passes piston hole and connects cylinder body (1), with piston (8) free-running fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02218139 CN2558559Y (en) | 2002-06-11 | 2002-06-11 | Center valve type brake main cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02218139 CN2558559Y (en) | 2002-06-11 | 2002-06-11 | Center valve type brake main cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2558559Y true CN2558559Y (en) | 2003-07-02 |
Family
ID=33696837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02218139 Expired - Lifetime CN2558559Y (en) | 2002-06-11 | 2002-06-11 | Center valve type brake main cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2558559Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508284B (en) * | 2009-03-17 | 2011-10-12 | 芜湖伯特利汽车安全系统有限公司 | Center valve type vehicle brake master cylinder |
| CN102795216A (en) * | 2012-08-02 | 2012-11-28 | 浙江亚太机电股份有限公司 | Hydraulic unit for integrated automobile brake system |
| CN103382976A (en) * | 2012-05-04 | 2013-11-06 | 宁波安捷制动器有限公司 | Plunger type hydraulic brake master cylinder |
| CN110203185A (en) * | 2019-05-28 | 2019-09-06 | 万向钱潮股份有限公司 | A kind of master cylinder with liquid storage chamber |
-
2002
- 2002-06-11 CN CN 02218139 patent/CN2558559Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508284B (en) * | 2009-03-17 | 2011-10-12 | 芜湖伯特利汽车安全系统有限公司 | Center valve type vehicle brake master cylinder |
| CN103382976A (en) * | 2012-05-04 | 2013-11-06 | 宁波安捷制动器有限公司 | Plunger type hydraulic brake master cylinder |
| CN102795216A (en) * | 2012-08-02 | 2012-11-28 | 浙江亚太机电股份有限公司 | Hydraulic unit for integrated automobile brake system |
| CN110203185A (en) * | 2019-05-28 | 2019-09-06 | 万向钱潮股份有限公司 | A kind of master cylinder with liquid storage chamber |
| CN110203185B (en) * | 2019-05-28 | 2023-10-24 | 万向钱潮股份公司 | Brake master cylinder with liquid storage cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120611 Granted publication date: 20030702 |