JPS54117874A - Brake booster - Google Patents
Brake boosterInfo
- Publication number
- JPS54117874A JPS54117874A JP2514578A JP2514578A JPS54117874A JP S54117874 A JPS54117874 A JP S54117874A JP 2514578 A JP2514578 A JP 2514578A JP 2514578 A JP2514578 A JP 2514578A JP S54117874 A JPS54117874 A JP S54117874A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- pressure
- compressed air
- braking
- strengthen
- 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.)
- Granted
Links
Abstract
PURPOSE: To strengthen the braking operation of a brake by connecting a compressed air source to third pressure chamber, communicating third pressure chamber with atmosphere at the initial braking time, and communicating the chamber with the compressed air source in response to the increase of the pressure in a pressure changing chamber.
CONSTITUTION: When a brake operating rod 10 is pushed, a pressure changing chamber 6 is communicated with third pressure chamber 9 to increase the pressure in the chamber 6 to thus lower the pressure in the chamber 9 and to open a check valve 17 to introduce the atmospheric air from the chamber 9 into the chamber 6. Thus, a power piston 3 can be moved by the pressure difference between the chamber 6 and negative pressure chamber 5 to allow the rod to move forwardly. When further braking, the pressure in the chamber 6 approaches the value near the atmospheric pressure to cause the plunger 18d of a control valve 18 to separate a valve body 18a from a valve seat 18b against the force of a compression spring 18e to thereby introduce the compressed air from the air pump 14 into the chamber 6 from the chamber 9. Thus, the pressure difference between the negative pressure from the chamber 5 and the positive pressure from the pump 14 is operated to the power piston 3 to strengthen the braking operation.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2514578A JPS54117874A (en) | 1978-03-06 | 1978-03-06 | Brake booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2514578A JPS54117874A (en) | 1978-03-06 | 1978-03-06 | Brake booster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54117874A true JPS54117874A (en) | 1979-09-12 |
| JPS6114983B2 JPS6114983B2 (en) | 1986-04-22 |
Family
ID=12157812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2514578A Granted JPS54117874A (en) | 1978-03-06 | 1978-03-06 | Brake booster |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54117874A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02182566A (en) * | 1988-11-10 | 1990-07-17 | Bendix France | Controller for booster |
| JPH0532209U (en) * | 1991-10-02 | 1993-04-27 | 日信工業株式会社 | Negative pressure booster |
| DE4227286A1 (en) * | 1992-08-18 | 1994-02-24 | Lucas Ind Plc | Pneumatic brake booster, in particular for motor vehicles |
| US5400693A (en) * | 1992-08-26 | 1995-03-28 | Lucas Industries Public Limited Company | Brake pressure booster |
| JP2001341634A (en) * | 2000-05-31 | 2001-12-11 | Tokico Ltd | Brake booster |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62178974U (en) * | 1986-05-01 | 1987-11-13 | ||
| JPS63163770U (en) * | 1987-04-13 | 1988-10-25 |
-
1978
- 1978-03-06 JP JP2514578A patent/JPS54117874A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02182566A (en) * | 1988-11-10 | 1990-07-17 | Bendix France | Controller for booster |
| JPH0532209U (en) * | 1991-10-02 | 1993-04-27 | 日信工業株式会社 | Negative pressure booster |
| DE4227286A1 (en) * | 1992-08-18 | 1994-02-24 | Lucas Ind Plc | Pneumatic brake booster, in particular for motor vehicles |
| WO1994004402A1 (en) * | 1992-08-18 | 1994-03-03 | Lucas Industries Public Limited Company | Pneumatic brake servo, especially for motor vehicles |
| US5400693A (en) * | 1992-08-26 | 1995-03-28 | Lucas Industries Public Limited Company | Brake pressure booster |
| JP2001341634A (en) * | 2000-05-31 | 2001-12-11 | Tokico Ltd | Brake booster |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114983B2 (en) | 1986-04-22 |
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