Abstract: The invention relates to the technical field of locks and discloses an actuator assembly of a combination lock. The actuator assembly includes a fixed motor, a drive shaft fixed to the axis of the motor, a cylindrical spring sheathed on the drive shaft and displaceable axially, a pin installed onto the drive shaft which may screw within two adjacent loops of the cylindrical spring, and a casing installed coaxially with the motor. The casing includes a cavity for accommodating the cylindrical spring, and a second sliding groove formed on the casing, and both ends of the cylindrical spring have a retaining ring extended outwardly from the outer periphery of the cylindrical spring and the retaining ring disposed at the second sliding groove for preventing the rotation of the cylindrical spring.

Abstract: A swing bolt lock includes a swing post, a cam dog, and an electric device cooperative with a lock bolt. The electric device includes a motor, a slider connected to a rotating shaft of the motor. Without an unlock authorization, the slider is situated in the space at an end of a sliding slot and abutted against the cam dog to prevent the cam dog from moving towards the space at the end of the sliding slot, so as to prevent the lock bolt from entering into the lock housing. With an unlock authorization, the slider is driven by the motor and released from the abutment of the cam dog, and the cam dog is driven by the lock bolt and swing post to enter into the space at the end of the sliding slot so as to release the locking of the lock bolt from turning into the lock housing.

Abstract: This invention relates to locking devices and particularly to an actuator assembly for a locking device with electronic control. The actuator assembly includes: a motor, having a drive shaft installed to a motor shaft, and a coil spring installed to the drive shaft, and further includes: a follower shaft capable of displacing in an axial direction in the coil spring, and a pin installed onto the follower shaft and rotatable into the coil spring, and the follower shaft is extended into the coil spring and slidably fitted to the coil spring. Compared with the prior art, this invention effectively maintains a radial limitation of the cylinder spring to overcome the vibration of the spring occurred during the rotation of the cylinder spring and the axial displacement of the follower shaft.

Abstract: A swing bolt lock includes a swing post, a cam dog, and an electric device cooperative with a lock bolt. The electric device includes a motor, a slider connected to a rotating shaft of the motor. Without an unlock authorization, the slider is situated in the space at an end of a sliding slot and abutted against the cam dog to prevent the cam dog from moving towards the space at the end of the sliding slot, so as to prevent the lock bolt from entering into the lock housing. With an unlock authorization, the slider is driven by the motor and released from the abutment of the cam dog, and the cam dog is driven by the lock bolt and swing post to enter into the space at the end of the sliding slot so as to release the locking of the lock bolt from turning into the lock housing.

Abstract: The invention relates to an electrical linear actuator for a lock, which comprises a motor, a rotating shaft connected with the motor, a spring sleeved on the rotating shaft and a pin arranged on the rotating shaft and also comprises a slider, wherein the slider is provided with a frame capable of receiving the shaft and the spring; grooves for limiting the rotating shaft are formed on a wall; the spring comprises a first winding, end coils and second windings; the first winding is arranged in the middle part of the spring and takes the shape of a cylindrical spiral; the end coils are respectively arranged at both ends of the spring and coaxial with the first winding; the second windings are arranged between the first winding and the end coils, and circumscribed circles of the second windings are convex relative to the first winding; and third windings coaxial with the first winding can be arranged between the second windings and the end coils.