Patent ID: 9238927
Filing Date: 2016-01-19
CPC Classification: E05B,Y10T

Claim Text:
1. A gear-driven clutching and resetting device of a door lock comprising a clutch, a rotary ring, a first reset block, an arch shape reset spring, a second reset block, and a locating pin, whereas the clutch is assembled inside the rotary ring, the clutch and the rotary ring coaxially rotate around a first center shaft; the reset spring is fitted inside the second reset block, whereas the second reset block is fitted inside the first reset block; the reset spring, the second reset block and the first reset block coaxially rotate around a second center shaft, wherein a radius of the rest spring is shorter than a radius of the second reset block and the radius of the second reset block is shorter than a radius of the first reset block; a projection of the locating pin is fitted inside a groove of the second reset block, so that the projection has a limiting function on the second reset block when the second reset block is rotating.