Patent ID: 11905737
Assignee: CONSUMER 2.0 INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. An electric lock, comprising:
(a) a knob;
(b) a lock body;
(c) a rotatable shaft comprising a rotatable-shaft front end and an opposing rotatable-shaft rear end, wherein the rotatable-shaft rear end is fixedly connected to the lock body to control a locking and unlocking of the lock body;
(d) a gear assembly comprising a gear and a movable piece with a common axis center; and
(e) a motor assembly for driving the gear to rotate;
wherein
the knob and the rotatable shaft are connected via the movable piece;
the movable piece interacts with the gear via a mechanical barrier, such that electrically driving the gear by the motor assembly causes the movable piece to rotate;
the movable piece passes over the mechanical barrier when a sufficient manual rotational force is applied to the knob, such that the movable piece is free to rotate relative to the gear, thereby allowing a user to manually control the locking and unlocking of the lock body,
the gear comprises an internal wall that defines a gear internal space for accommodating the movable piece, wherein the mechanical barrier comprises at least one protrusion extending from the internal wall towards the axis center;
the movable piece comprises at least one rounded head spring mechanism, and the at least one rounded head spring mechanism comprises a rounded head extending away from the axis center and adjacent to the internal wall; and
the at least one rounded head spring mechanism is compressible, such that when the sufficient manual rotational force is applied to the knob, the rounded head passes over the at least one protrusion.