BRAKE RELEASE MECHANISM FOR A SPRING BRAKE ACTUATOR AND CORRESPONDING SPRING BRAKE ACTUATOR

The invention relates to a brake release mechanism (24) for a spring brake actuator (2), in particular a parking or emergency spring brake actuator (2) for use in a commercial vehicle, said release mechanism (24) comprising a brake release bolt (30) having a threaded portion (34) and an operating section (14) for operating the brake release bolt (30) when inserted into a spring brake actuator (2), a running nut (12) engaging the threaded portion (34), said running nut (12) being adapted to axially travel along the threaded portion (34) in order to move a spring brake actuator piston (8) against a force of an actuator power spring (6), an interface nut (22) attached to said operating section (14) of the brake release bolt (30), wherein the interface nut (22) and the operating section (14) each comprise at least one bore section (36a, 36b) that form a common bore (38) when the interface nut (22) is attached to said operating section (14), and a locking element (40) that is inserted in said bore (38) for blocking the interface nut (22) relative to the operating section (14). In particular, it is proposed that the locking element (40) is configured as a locking ball (42).