A brake cylinder device is provided that can prevent an unintentional release of a braking force of a spring brake means due to disengagement of meshing portions of a clutch mechanism. A brake cylinder device (1) includes a service brake means (11) includi...

The unit brake 1 includes a pushing rod 12 which is arranged to move in and out to and from a brake main body 11, a shoe head 13 which is rotatably connected to a leading end portion of the pushing rod 12, a link component 14 which is connected to the shoe...

A variable load valve (21) comprises: a pressure regulating valve (50) capable of outputting a pressure corresponding to a full-load-condition load compensating pressure; a pilot pressure sensor (52b); a solenoid valve (52) capable of charging/discharging ...

A master cylinder is provided with a resin-made cylinder main body (2) formed with a stepped portion (2c) at a boundary between a cylinder hole (2a) and a mount hole (2b), a piston (3) defining a hydraulic chamber (14) in cooperation with the inner circumf...

A pedal module (1) adapted to be fixed to a dashboard (10) for separating a vehicle body of an automotive vehicle into a vehicle chamber and an engine room is provided with a pedal (11) which is operable by a stepping operation of a driver of the vehicle, ...