Hydraulic control device and brake device using same

Details Hydraulic control device and brake device using same Hydraulic control device and brake device using same

1998-11-13

2000-07-18

Graham, Matthew C.

Brakes

Operators

Electric

188156, B60T 1300, P03C 100

Patent

active

060893591

ABSTRACT:
A brake device includes a main piston slidably mounted within a caliper body of the brake device, a cylinder body provided inside an inner periphery of the piston, a sealed fluid chamber which is formed by the cylinder body and an inner peripheral surface of the main piston, and is filled with a fluid, a shaft rotatably mounted on the cylinder body, pressure control pistons which are driven by the shaft to move into and out of the fluid chamber, a linear movement conversion mechanism provided between the shaft and each of the pressure control pistons so as to convert a rotation of the shaft into a linear movement of the pressure control piston, a motor for rotating the shaft, a speed changer provided between the shaft and the motor so as to transmit the number of revolutions of the motor to the shaft in a manner to reduce the number of revolutions, and an electronic control unit (ECU) for controlling the motor.

REFERENCES:
patent: 3790225 (1974-02-01), Wehde
patent: 4850459 (1989-07-01), Johannesen et al.
patent: 4860859 (1989-08-01), Yamatoh et al.
patent: 5667284 (1997-09-01), Drennen et al.

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