Brake device for automobile

Details Brake device for automobile Brake device for automobile

1998-05-01

2000-08-29

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

60403, 60533, 60552, 60582, 74579R, 403282, 403274, 403 41, 188371, 188372, 188376, 188374, F15B 910

Patent

active

061091642

ABSTRACT:
A push rod of a vacuum booster includes an inner rod section, a pipe-shaped outer rod section which is slidably fitted over an outer periphery of a rear portion of the inner rod section and connected to a brake pedal, and a buffer member made of a synthetic resin and fitted over the outer periphery of the inner rod section in front of the outer rod section. Usually, an end face of the outer rod section is retained in a position in which it abuts against a projection of the inner rod section. When an axial compressing force is applied to the push rod upon a collision of an automobile, the end face of the outer rod section slides forwards over and past the projection, while buckling the buffer member. Thus, the pushing-up of the brake pedal toward a vehicle compartment due to the retreating movement of a master cylinder is prevented, and the load applied to a driver's foot is alleviated.

REFERENCES:
patent: 5531135 (1996-07-01), Dolla

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