Electronic parking brake with active return function

The invention relates to the field of automobiles, and discloses an electronic parking brake with an active return function, a transmission mechanism (3) comprises a screw rod (6) and a screw sleeve (5) which are matched with each other, the screw sleeve (5) is arranged in a piston (28), an active return spring is arranged in the piston (28), a first limit (8) is arranged on the outer wall of the screw sleeve (5), and a second limit (9) is arranged on the inner wall of the piston (28). The driving return spring is in a compressed state, the upper side of the driving return spring is supported on the first limit (8), and the lower side of the driving return spring is supported on the second limit (9); and in the upward movement process of the brake release threaded sleeve (5), the active return spring can release the spring force to push the piston (28) to return quickly. The brake has the advantages of stable braking, quick return, timely response and the like. 本发明涉及汽车领域，公开了一种具有主动回位功能的电子驻车制动器，其中传动机构(3)包括相互配合的