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US 6,622,535 B2Granted
Lock construction having an electrically activated clutch mechanism and a transmission mechanism
AssigneeTung Lung Metal Industry Co., Ltd.
InventorsWei-Lung Chiang, Tsung-Chung Hung, Po-Yang Chen, Chen-Ming Lin
Life of this patent
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Abstract
This invention is related to a lock construction comprising: an active driving mechanism, a clutch mechanism, a first latch, a first latch-driving member, a second latch, a second latch-driving member, a latch spring, a transmission mechanism, and a handle mechanism. In one embodiment, the lock construction comprises a clutch mechanism that can be activated electrically to allow latching or unlatching of the door. In an alternative embodiment, the lock construction comprises a transmission mechanism that can drive two latches of the lock simultaneously to latch or unlatch the door.
Claims18
A lock construction, comprising:
- an active driving mechanism, including:
- a coil, a coil rod extending from the coil, and a coil rod spring engaging over the coil rod normally maintaining the coil rod in a disengaging position;
- a first latch movable between a retracted and an extended position;
- a first latch-driving member adapted to drive the first latch to move between its retracted and extended position;
- a second latch movable between a retracted and an extended position;
- a second latch-driving member driving the second latch to move to its retracted position;
- a latch spring normally urging the second latch in the extended position and co-acting between the second latch and the second latch-driving member;
- a transmission mechanism selectively activated by the second latch-driving member to drive the first latch-driving member;
- a clutch mechanism selectively activated by the active driving mechanism so as to engage the second latch-driving member with the transmission mechanism;
- and whereby the clutch mechanism normally disengages the second latch-driving member, when the coil rod of the active driving mechanism is activated electrically, the coil rod of the active driving mechanism activates the clutch mechanism to engage the second latch-driving member with the transmission mechanism so that the second latch-driving member activates the first latch-driving member through the transmission mechanism.
7 more elements
A lock construction, comprising:
- a first latch movable between a retracted and an extended position;
- a first latch-driving member adapted to drive the first latch to move between its retracted and extended position, wherein the first latch-driving member includes a first dial, a second dial, and a third dial;
- a second latch movable between a retracted and an extended position;
- a second latch-driving member driving the second latch to move to its retracted position;
- a latch spring normally urging the second latch in the extended position and co-acting between the second latch and the second latch-driving member;
- a transmission mechanism selectively activated by the second latch-driving member to drive the first latch-driving member, wherein the transmission mechanism includes:
- a first rotary member having a dial, a spring-loaded second rotary member having a first flank and a second flank, and a spring-loaded third rotary member having a first flank and a second flank, the dial of the first rotary member being selectively activated by the second latch-driving member to drive the first flank of the second rotary member or the first flank of the third rotary member, subjecting the second flank of the second rotary member to activate the second dial of the first latch-driving member or the second flank of the third rotary member to activate the third dial of the first latch-driving member;
- a clutch mechanism selectively engaging the second latch-driving member with the first rotary member of the transmission mechanism.
5 more elements
An electronic lock construction, comprising:
- an active driving mechanism, the active driving mechanism including a coil, a coil rod extending from the coil, and a coil rod spring engaging over the coil rod normally maintaining the coil rod in a disengaging position;
- a first latch movable between a retracted and an extended position and including a dial;
- a first latch-driving member including a first dial, a second dial, and a third dial;
- a second latch movable between a retracted and an extended position;
- a second latch-driving member being formed with a second aperture and including a dial and a handle opening, the second latch-driving member driving the second latch to move to its retracted position;
- a latch spring normally urging the second latch in the extended position and co-acting between the second latch and the second latch-driving member;
- a transmission mechanism including:
- a first rotary member having a dial and being formed with a first aperture a spring-loaded second rotary member having a first flank and a second flank, and a spring-loaded third rotary member having a first flank and a second flank, the dial of the first rotary member being selectively activated to drive the first flank of the second rotary member or the first flank of the third rotary member, such that the second flank of the second rotary member activates the second dial of the first latch-driving member or the second flank of the third rotary member activates the third dial of the first latch-driving member, so as to activate the first dial of the first latch-driving member;
- a clutch mechanism including:
- a retaining block, a retaining member normally engaging the retaining block, and a retaining spring engaging over the retaining member, wherein the retaining member is received in the first aperture of the transmission mechanism;
- a handle mechanism co-acting with the second latch-driving member;
- whereby when the coil rod of the active driving mechanism is not activated electrically, the transmission mechanism disengages from the second latch-driving member such that the handle mechanism can only drive the second latch to move to its retracted position, and whereby when the coil rod of the active driving mechanism is activated electrically, the coil rod of the active driving mechanism drives the retaining member to enter the second aperture of the second latch-driving member so as to engage the second latch-driving member with the transmission mechanism, such that the handle mechanism can drive the first latch to move between its retracted and extended position and the second latch to move to its retracted position.
9 more elements
Dependencies are inferred from the claim text.