SPRING BRAKE ACTUATOR FOR USE IN A VEHICLE, AND USE OF A DISC SPRING THEREIN

The invention relates to a spring brake actuator (1) for use in a vehicle, in particular in a commercial vehicle, the spring brake actuator comprising a housing part (5) having a housing base (11), a piston (15) that is located inside the housing and configured to move along a stroke axis (y) from a retracted position towards an extended position such as to transmit a brake force, and a spring assembly (20) mounted between the housing base (11) and the piston (15), wherein the spring assembly (20) comprises an axis of action (x), preferably aligned in parallel to the stroke axis (y), and is operatively coupled to the piston (15) such as to store potential energy when the piston (15) is in the retracted position, and to move the piston towards the extended position by transforming potential energy into kinetic energy. The invention suggests to use at least one disc spring (100) in the spring assembly (20).