Electric locks

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.

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 an inner core with a common axis center;
• and
• (e) a motor assembly for driving the gear to rotate;
• wherein
• the gear comprises an internal wall that defines a gear internal space for accommodating the inner core, wherein the internal wall comprises two protrusions extending towards the axis center;
• the inner core is at least partially mounted in the gear internal space, wherein the inner core comprises:
• (i) an inner core opening arranged on the axis center;
• (ii) a first frame, wherein the first frame comprises:
• a first rounded head disposed on the first frame, wherein the first rounded head extends away from the axis center and abuts the internal wall;
• and
• a first arm and a second arm;
• (iii) a second frame, wherein the second frame and the first frame are symmetrically arranged on the inner core, the second frame comprises:
• a second rounded head disposed on the second frame, wherein the second rounded head extends away from the axis center and abuts the internal wall;
• and
• a third arm and a fourth arm;
• (iv) a first spring elastically connecting the first arm of the first frame to the third arm of the second frame;
• and
• (v) a second spring elastically connecting the second arm of the first frame to the fourth arm of the second frame;
• the electric lock further comprises a connector comprising a connector front end, an opposing connector rear end, and a connector outer periphery sized and shaped to match the inner core opening, wherein the connector front end is connected to the knob, and the connector rear end passes through the inner core opening and is connected to the rotatable-shaft front end;
• wherein when the motor assembly drives the gear to rotate, the two protrusions interact with the first frame and the second frame respectively to drive the inner core and the rotatable shaft to rotate together, thereby electrically controlling the locking and unlocking of the lock body;
• and
• the first spring and the second spring are compressible, such that when a sufficient manual rotational force is applied to the knob, the first frame and the second frame approach each other so that the first rounded head and the second rounded head pass over one of the two protrusions respectively, so that the inner core is free to rotate relative to the gear, thereby allowing a user to manually control the locking and unlocking of the lock body.