Title:
BRAKE HYDRAULIC PRESSURE CONTROLLER WITH AXIAL PISTON PUMP AND IN-LINE DAMPERS
Document Type and Number:
WIPO Patent Application WO/2019/138281
Kind Code:
A1
Abstract:
A brake hydraulic pressure controller (20) capable of being formed with a relatively large damper chamber (190) while suppressing enlargement of its housing (130) is provided. The brake hydraulic pressure controller (20) includes: a motor (96) having a motor shaft (96a); a skew plate (125) fixed to a tip of the motor shaft (96a) and arranged to be inclined with respect to an axial direction of the motor shaft (96a); and a pump element (44) driven by rotation of the motor shaft (96a) and the skew plate (125). The pump element (44) has: a piston (150) that reciprocates in parallel with the axial direction of the motor shaft (96a) in conjunction with the rotation of the skew plate (125); an accommodation chamber (161) that accommodates a part of the piston (150) and to which a brake fluid is introduced; a release valve (180) that releases the brake fluid from the accommodation chamber (161); and a pressure damper chamber (190) that is provided in a reciprocal direction of the piston (150) and into which the brake fluid released from the release valve (180) flows.
Inventors:
TAJIKA YOSHIO (JP)
NINBARI TSUTOMU (JP)
NINBARI TSUTOMU (JP)
Application Number:
PCT/IB2018/060233
Publication Date:
July 18, 2019
Filing Date:
December 18, 2018
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
International Classes:
B60T8/40; B60T8/36
Domestic Patent References:
| WO2007028687A1 | 2007-03-15 | |||
| WO2010019661A1 | 2010-02-18 | |||
| WO2012079815A1 | 2012-06-21 |
Foreign References:
| US5199860A | 1993-04-06 | |||
| EP2060458A2 | 2009-05-20 | |||
| DE19650272A1 | 1998-06-10 | |||
| EP3130803A1 | 2017-02-15 | |||
| US5094599A | 1992-03-10 | |||
| GB1465022A | 1977-02-16 |
Other References:
None
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