Patent ID: 8172047
Filing Date: 2012-05-08
Classification: B60T

Abstract:
1. A brake cylinder for a pneumatically actuated vehicle brake, comprising: a spring force accumulator brake section for carrying out parking brake operations via a spring force accumulator spring, and a service brake section for carrying out service brake operations which are actuated by compressed air, the spring force accumulator brake section and the service brake section being combined in a housing to form one structural unit; a first piston dividing the housing into two spaces, of which one of the two spaces serves as a pressure space for actuating the service brake section, the spring force accumulator spring of the spring force accumulator section being arranged in the other space on an opposite side of the piston; a pneumatically actuable locking mechanism, the spring force accumulator spring acting in the space on a further spring force accumulator piston which is lockable with respect to the first piston by the locking mechanism, and is first releaseable by a release action of the locking mechanism, the spring force accumulator piston being connected directly or via further elements to a piston rod for actuating the vehicle brake; wherein, after release of the locking mechanism, the spring force accumulator spring acts between the two pistons and displaces them relative to one another in the case of a parking brake operation; and wherein the pneumatically actuable locking mechanism is operatively configured as a pneumatically actuable friction cone clutch, the cone clutch comprising balls as transmission elements within the clutch, said balls acting as clamping balls.