Patent ID: 8099742

Claim:
An optical disk loading final position detection device comprising: at least one optical disk guiding device ( 7 ) located at the optical disk insertion inlet ( 5 ); a delivery roll ( 27 ) located at the optical disk insertion inlet ( 5 ) and located at the position opposite to the optical disk guiding device ( 7 ); a pair of detection bars ( 10 , 11 ) provided with detection parts ( 10 a , 11 a ) contacting the periphery of the optical disk of big diameter or small diameter inserted from the optical disk insertion inlet ( 5 ), and the detection bars ( 10 , 11 ) being capable of freely rotating around respective rotary pivots; characterized in that it further comprises: a support part ( 20 ), one end of the support part ( 20 ) being rotatably fixed to the upper base plate ( 2 ) near the detection part ( 11 a ) of one detection bar ( 11 ), the middle of the support part ( 20 ) being provided with an assorted part ( 20 b ) interacting with the detection bar ( 11 ); and a trigger bar ( 21 ), the middle of the trigger bar ( 21 ) being rotatably fixed to the free end of the support part ( 20 ), one end of the trigger bar ( 21 ) being provided with a contact part ( 21 a ) for contacting the periphery of an optical disk, and the other end being connected to a control part ( 40 ), wherein the control part ( 40 ) is a cam unit capable of rotating freely around its shaft, and the cam unit is provided with: a gear ring ( 40 a ) located at an edge position of the periphery of the cam unit, the gear ring ( 40 a ) being provided with a gap ( 40 b ); a circular-arc groove ( 40 f ) located at the end part of the cam unit, being used to connect the trigger bar ( 21 ); a second salience ( 40 h ) located at the periphery of the cam unit, being used to stir the detection bars ( 10 , 11 ) to rotate to release the contact of the detection parts ( 10 a , 11 a ) and the periphery of a small diameter optical disk; and a third salience ( 40 a ) located at the periphery of the cam unit, being used to stir the detection bars ( 10 , 11 ) to rotate to release the contact of the detection parts ( 10 a , 11 a ) and the periphery of a big diameter optical disk.