Electronically-driven lock

An electronically-driven lock comprising:

• a bolt assembly having a latch adapted to be mounted in a door;
• a transmission shaft extending through the bolt assembly and controlling the latch of the bolt assembly;
• an inner lock unit and an outer lock unit adapted to be attached to opposite sides of the door;
• wherein
• the inner lock unit comprises a base, a driving unit, a clutch, a knob, and a cover covering the base;
• the knob comprises a mating shaft receiving the transmission shaft therein;
• the driving unit comprising a motor, a worm, a gear set and a gear plate;
• the gear plate comprising a pair of driving protrusions, and a gear portion around an outer circumference thereof;
• the clutch comprising a pair of driven protrusions, and a mating slot defined therein, the clutch being rotatably received in the gear plate, the mating shaft fittingly extending through the mating slot;
• wherein when the motor transmits power to the gear plate, the driving protrusions of the gear plate actuate the driven protrusions of the clutch such that the gear plate rotates the clutch, the clutch actuates the mating shaft of the knob to rotate and thereby rotate the transmission shaft, thereby actuating the latch between a locked state and an unlocked state.

An electrically-driven lock equipped with manual operation mechanism, comprising:

• a stationary base;
• a transmission shaft rotatable relative to the base and extending in a first direction, said transmission shaft being adapted to be rotated to two positions deciding whether a lock bolt is allowed to move along a second direction perpendicular to said first direction;
• an inner lock unit actuating the transmission shaft to rotate clockwise or counterclockwise, said inner lock unit including:
• a driving unit having a gear plate actuated by a motor, said gear plate defining a driving protrusion thereon;
• and
• a clutch unit having a mating shaft linked to said transmission shaft, said clutch unit defining a driven protrusion engaged with said driving protrusion;
• wherein
• said driving unit and said clutch unit are concentrically rotated relative to the base.