Patent ID: 11878665
Assignee: ROBERT BOSCH GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A hydraulic pressure control unit (60) for an anti-lock braking operation of a vehicle brake system (10), the hydraulic pressure control unit comprising:
a base body (61) formed with: a master cylinder port (MP1, MP2) to which a fluid pipe communicating with a master cylinder (21, 41) is connected; a wheel cylinder port (WP1, WP2) to which a fluid pipe communicating with a wheel cylinder (24, 44) is connected; a primary channel (25, 45) that communicates the master cylinder port (MP1, MP2) and the wheel cylinder port (WP1, WP2) via an inlet valve (28, 48); a secondary channel (26, 46) from which a brake fluid in the wheel cylinder (24, 44) is released to the master cylinder (21, 41) via an outlet valve (29, 49); and a booster channel (27, 47), through which the brake fluid in the master cylinder port (MP1, MP2) is supplied to a portion of the secondary channel (26, 46) upstream of a pump (31, 51) via a booster valve (33, 53) provided therewith;
the pump (31, 51) provided in the secondary channel (26, 46); and
a motor (62) as a drive source of the pump (31, 51), wherein
the booster valve (33, 53) is brought into an open state in an automatic pressure boosting operation of the vehicle brake system (10),
the inlet valve (28, 48) and the outlet valve (29, 49) are provided in valve holes (81, 82, 85, 86) formed on a first surface (61a) of the base body (61),
the motor (62) is provided in an upright manner in a motor hole (71) that is provided on the first surface (61a) of the base body (61),
on a second surface (61b) as a surface opposing the first surface (61a) of the base body (61), one of the master cylinder port (MP1, MP2) and the wheel cylinder port (WP1, WP2) is provided, and
the other of the master cylinder port (MP1, MP2) and the wheel cylinder port (WP1, WP2) is provided on a third surface (61c) of the base body (61), the third surface (61c) constituting one end of the base body (61) in a direction (D1) that is parallel with a reference line (P) including a center axis (C) of the motor hole (71).