| 摘要 |
A brake booster for vehicles having a vehicle body with a brake pedal, including a tubular housing forming a seat portion having an inner wall, a brake master cylinder coaxially adjacent to an output side of said tubular housing and having a piston and a cylinder body, a cylinder integrally formed with said cylinder body of said brake master cylinder and extending to the inner wall of the seat portion within the tubular housing for attaching the tubular housing to the vehicle body, a flange member positioned adjacent said inner wall of said seat portion and formed on an end portion of an outer circumference portion of said cylinder, a first movable member axially dividing a space formed on an outer circumference portion of the cylinder by the tubular housing and the cylinder and movable to the output side due to a pressure difference generated therebetween both sides, a second movable member slidably inserted into the cylinder and integrally movable with the first movable member and including an end portion outwardly projecting from the tubular housing, a valve mechanism disposed within said movable member and actuatable by the brake pedal and regulating the pressure difference, an output member operatably connecting the first and second movable members and the piston of the brake master cylinder and an attaching mechanism for attaching the brake booster to the vehicle body mounted on the flange.
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