A locking device configured to manually release a parking brake in a brake actuator for rail vehicles, the locking device including a spindle drive including a teething; a locking element engaging the teething of the spindle drive and switching a rotating movement and thus an axial force transmission of a parking brake on or off; and at least one contact damping element configured to dampen or prevent a contact of the locking element.

A locking device configured to manually release a parking brake in a brake actuator for rail vehicles, the locking device including a spindle drive including a teething; a locking element engaging the teething of the spindle drive and switching a rotating movement and thus an axial force transmission of a parking brake on or off; and at least one contact damping element configured to dampen or prevent a contact of the locking element.