An air brake relay valve includes an air guide unit having a movable set, a drive unit having a motor and a worm shaft, and a cam unit having a transmission member and a driven member. During a brake action, the motor rotates the worm shaft to rotate the transmission member so as to push the driven member downward to thereby move the movable set to a communicating position where a first valve opening and a second valve opening fluidly communicate with each other. When the brake action is released, the motor rotates reversely so that the driven member is moved upward and that the movable set moves, without being applied with additional force, to a non-communicating position where the first and second valve openings do not fluidly communicate.
AIR BRAKE RELAY VALVE
2019-06-27
Patent
Elektronische Ressource
Englisch
RELAY VALVE DEVICE, AND VEHICULAR BRAKE EQUIPMENT INCLUDING RELAY VALVE DEVICE
Europäisches Patentamt | 2022
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