Patent ID: 6402266
Filing Date: 2002-06-11
Classification: B60T,Y10S

Abstract:
A vehicle brake apparatus with a pump, the pump comprising:a plurality of rotary pumps, each of which has a rotating portion composed of an outer rotor whose inner circumference is provided with internal gears, an inner rotor whose outer circumference is provided with external gears and a plurality of spaces formed between the internal and external gears in mesh, and a casing for housing the rotating portion, which is provided with an intake port through which brake fluid is sucked to the rotating portion, a discharge port through which brake fluid is discharged from the rotating portion, and a casing through hole; wherein each of the intake and discharge ports of the rotary pumps extends in an opposite direction to the gravity direction to a highest position of the casing, and each of the brake fluid passages extends straight from the highest position of the casing perpendicularly to an axis of the drive shaft and in the direction opposite to the direction of gravity; a drive shaft for driving the plurality of the rotary pumps, which is rotatably inserted into the casing through hole and coupled with the respective inner rotors of the plurality of the rotary pumps; and a housing having a recess in which the pump is accommodated so that the drive shaft is positioned perpendicularly to a direction of gravity, the housing having brake fluid passages connected to the respective intake and discharge ports of the rotary pump.