Patent ID: 9725932
Date: 2017-08-08
CPC Classifications: E05B,E05C

Claim:
1. A transmission mechanism of a handle lock set used for driving a latch to perform extension/retraction action comprising: a driving plate having a main portion and a supporting portion, wherein the main portion comprises a rotational center, the supporting portion comprises a transmission surface and a blocking surface, the transmission surface is an arc surface, the blocking surface is a flat surface, the driving plate rotates about the rotational center to make the supporting portion swing between a first position and a second position; a rotating member; and a transmission plate having a first surface and a protrusion protruding from the first surface, wherein the protrusion comprises a contact surface wherein the contact surface is flat, the transmission plate is movable between a door-closed position and a door-open position to drive the rotating member in rotation and drive the latch simultaneously by the rotating member, the transmission surface of the supporting portion contacts against the contact surface, and the transmission plate is moved to the door-closed position, and the latch is in an extension state when the supporting portion of the driving plate is located at the first position; the blocking surface of the supporting portion contacts against the contact surface of the protrusion, and the transmission plate is pushed by the driving plate to move from the door-closed position to the door open position and drives the rotating member in rotation for making the latch operate in a retraction state when the supporting portion of the driving plate swings to the second position.