Clutch structure of automative mirror adjustment mechanism

1. An automotive mirror adjustment mechanism comprising a mirror position controller installed in the cabin of an automobile, two driving motors each of which is electrically connected to said mirror position controller, two adjustment members each of which is geared with the corresponding driving motor via a gear train to control position of the mirror, and sensors that sense position of said mirror while connected to the gear train between said driving motors and said adjustment members, and then, transmit signals of the sensed position to said mirror position controller, wherein the automotive mirror adjustment mechanism includes a clutch structure comprising,

a clutch driving gear with specified gear teeth formed at circumference thereof and hollow fitting chuck formed at center thereof, to be geared with an output axis of the driving motor via the gear train, whereby said fitting chuck is divided by a plurality of slits in circumferential direction and a donut-shape groove is formed collapsed between said gear teeth and said fitting chuck;

a pinion gear including a protrusion at one end thereof, to be geared with a rack gear teeth formed at one side of the adjustment member, whereby said protrusion is inserted into the inner surface of said fitting chuck of the clutch driving gear; and

a spring pin that provides frictional contact on contact surface between said fitting chuck of said clutch driving gear and said protrusion of said pinion gear by applying bias force in radial direction while said spring pin is inserted in said groove of said clutch driving gear, or allows slip movement.

2. The automotive mirror adjustment mechanism of claim 1 , wherein said fitting chuck of clutch driving gear comprises a separation prevention protrusion formed on inner surface thereof in circumferential direction that fits into the corresponding separation prevention groove formed on circumference of said protrusion of said pinion gear.