JPS6447659A - Hydraulic brake device - Google Patents
Hydraulic brake deviceInfo
- Publication number
- JPS6447659A JPS6447659A JP62202250A JP20225087A JPS6447659A JP S6447659 A JPS6447659 A JP S6447659A JP 62202250 A JP62202250 A JP 62202250A JP 20225087 A JP20225087 A JP 20225087A JP S6447659 A JPS6447659 A JP S6447659A
- Authority
- JP
- Japan
- Prior art keywords
- liquid pressure
- operated
- pressure
- wheel cylinders
- changeover valve
- 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.)
- Pending
Links
Abstract
PURPOSE:To ensure brake liquid pressure from a master cylinder for both front and rear wheels when a dynamic hydraulic controller is disabled, by coupling at least one of two liquid pressure systems with the dynamic hydraulic controller thereby shortening the brake pedal stroke. CONSTITUTION:A changeover valve 60 communicates wheel cylinders 53a, 54a with a port 1g when it is not excited or operated and communicated the wheel cylinders 53a, 54a with a port 1d when it is excited or operated. A pressure sensor 66 is arranged in a liquid pressure path 73 and the changeover valve 60 is driven through an actuator 67 corresponding to the pressure detected through the pressure sensor 66. In other word, the changeover valve 60 is not operated when a predetermined boosted liquid pressure exists in the liquid pressure path 73, but operated when the pressure in the liquid pressure path 73 drops below a predetermined level so as to communicate the wheel cylinders 53a, 54a with the liquid pressure path 72. Consequently, brake force can be ensured for all wheels 51-54 even upon missing of power liquid pressure.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62202250A JPS6447659A (en) | 1987-08-13 | 1987-08-13 | Hydraulic brake device |
US07/230,877 US4940290A (en) | 1987-08-13 | 1988-08-11 | Hydraulic braking system |
DE3827507A DE3827507C2 (en) | 1987-08-13 | 1988-08-12 | Hydraulic braking system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62202250A JPS6447659A (en) | 1987-08-13 | 1987-08-13 | Hydraulic brake device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6447659A true JPS6447659A (en) | 1989-02-22 |
Family
ID=16454434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62202250A Pending JPS6447659A (en) | 1987-08-13 | 1987-08-13 | Hydraulic brake device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6447659A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4329817A1 (en) * | 1992-09-04 | 1994-03-10 | Aisin Seiki | Brake system for rear wheels of motor vehicle - feeds brake pressure to front and rear wheel cylinders equalised upon faulty functioning of antilocking protection adjustment |
JP2002308316A (en) * | 2001-04-16 | 2002-10-23 | Yuji Seki | Case having timing unsealing function |
JP2020104641A (en) * | 2018-12-27 | 2020-07-09 | 株式会社アドヴィックス | Vehicular braking device |
-
1987
- 1987-08-13 JP JP62202250A patent/JPS6447659A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4329817A1 (en) * | 1992-09-04 | 1994-03-10 | Aisin Seiki | Brake system for rear wheels of motor vehicle - feeds brake pressure to front and rear wheel cylinders equalised upon faulty functioning of antilocking protection adjustment |
US5393131A (en) * | 1992-09-04 | 1995-02-28 | Aisin Seiki Kabushiki Kaisha | Hydraulic brake system with enhanced braking force for rear wheels |
DE4329817C2 (en) * | 1992-09-04 | 2001-12-06 | Aisin Seiki | Brake system for motor vehicle rear wheels |
JP2002308316A (en) * | 2001-04-16 | 2002-10-23 | Yuji Seki | Case having timing unsealing function |
JP2020104641A (en) * | 2018-12-27 | 2020-07-09 | 株式会社アドヴィックス | Vehicular braking device |
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