Tong Lung Metal Industry Co., Ltd.

Tlhm Co., Ltd

Kun-Chen Lee

Wei-Liang Chiang

Rong-Faa Wu

Po-Yang Chen

Song-Gen Shyu

Ju-Lin Yang

Ching-Chuan Kuo

Cheng-Chung Liu

Yu-Le Lin

Ting-Cheng Chang

Tony Yen

Ching Chuan Kuo

A transmission device of an electronic lock, disposed in a lock body, each of both sides of the lock body is provided with a rose assembly, connected respectively to a handle, to drive a driving seat to bring a latch bolt of a latch unit into action. The transmission device is controlled electronically, comprising: a positioning element, a motor, an elastic element, a rod, a clutch element, and a spring. The clutch element is slideable in the spindle, to move between a first position where the clutch element engages with the spindle and a second position where the clutch element disengages from the spindle, such that when the clutch element engages with the spindle, the spindle drives the driving seat, to retract the latch bolt of the latch unit.

Transmission device of electronic lock

A re-keyable cylinder lock has a control member to permit or restrict transverse movement of a re-keying unit. The control member is movable axially between first and second positions and transversely to a third position from the second position. In the third position, the re-keying unit moves transversely and disengages from first tumbler pieces. A limit member is provided to prevent the control member from moving axially when no right key is inserted into a plug. A security arm is connected to the control member and is breakable so that destructive forces cannot reach the control member.

Re-keyable cylinder lock

Door lever

A cylinder lock includes a lock housing receiving a plug assembly that has a key hole, tumbler pieces having respective toothed parts, and a re-keying unit. The re-keying unit has rotatable gear wheels engaged releasably with the respective toothed parts to reposition the respective tumbler pieces. The gear wheels disengage from the respective tooth parts by moving transversely of a longitudinal axis of the lock housing. Re-keying methods are also disclosed.

Cylinder lock

Growing community of inventors

Chiayi County, Taiwan

Kun-Chen Lee