Title:
HYDRAULIC CONTROL VALVE GEAR IN HYDRAULIC BRAKING DEVICE
Document Type and Number:
Japanese Patent JP3551221
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce NVH by bypassing an inlet valve and a selector valve, and putting a fluid in a wheel cylinder quickly back to a master cylinder.
SOLUTION: A main flow passage 12 is formed in an interval between a master cylinder 10 and a wheel cylinder, and a normally-open type hydraulic control gear 13 is installed in this main passage 12. This valve gear 13 is a compound valve built-in with a normally-opened type inlet valve 23 electromagnetically operating and a normally-opened type selector valve 24, and in this constitution, this selector valve 24 is installed at the upstream side of the inlet valve 23, while a release passage 26 with a check valve 25 is bypassingly formed in an interval between the main passage 12 at the downstream side of the inlet valve 23 and the main passage 12 at the upstream side of the selector valve 24. This selector valve 24 is a normally opened two-position-and-one- direction valve being operated by a hydraulic pressure differential, namely, if this hydraulic pressure differential between the master cylinder 10 and the wheel cylinder 11 acting on every chamber becomes more than the constant value, it is designed so as to be switched from open condition to throttled condition.
Inventors:
Yukio Hosoya
Yoshihiro Ishida
Yoshihiro Ishida
Application Number:
JP26139896A
Publication Date:
August 04, 2004
Filing Date:
September 10, 1996
Export Citation:
Assignee:
Nisshinbo Corporation
International Classes:
B60T8/36; B60T8/42; B60T8/48; B60T8/50; F16K31/06; (IPC1-7): B60T8/36; F16K31/06
Domestic Patent References:
| JP8104228A | ||||
| JP914483A | ||||
| JP8210546A | ||||
| JP348080A |
Foreign References:
| WO1995009098A1 |
Attorney, Agent or Firm:
Sakuo Yamaguchi
Yuichi Kasai
Yuichi Kasai