Patent ID: 8984545
Filing Date: 2015-03-17
Classification: G11B

Abstract:
1. A CD player, comprising a conveying roller ( 24 ), a first sensing rod ( 7 ), a second sensing rod ( 6 ), a linkage member ( 14 ), a first switch ( 15 ) and a second switch ( 17 ), wherein the conveying roller ( 24 ) is used for conveying a CD from a CD insertion opening ( 4 ) to a playback baseplate; the first sensing rod ( 7 ) and the second sensing rod ( 6 ) are driven to rotate by the periphery of a CD inserted into the insertion opening; the linkage member ( 14 ) is used for transmitting the rotation of the first sensing rod to the second sensing rod; the first switch ( 15 ) is used for receiving the rotation of the two sensing rods and starting the conveying roller; the second switch ( 17 ) is clamped with one sensing rod near rotary terminals of the two sensing rods and used for operating by determining the outside diameter of the CD; and wherein the linkage member includes a first retaining part ( 14 d ) used for preventing the first sensing rod ( 7 ) from rotating independently, a first clamping part ( 14 b ) used for enabling the linkage member to move towards the insertion opening during the rotation of the first sensing rod, a second retaining part ( 14 c ) used for preventing the second sensing rod ( 6 ) from rotating independently, and a second clamping part ( 14 a ) used for enabling the linkage member to move towards the insertion opening during the rotation of the second sensing rod; the first retaining part and the second retaining part are respectively arranged on both sides of a centerline ( the second sensing rod is used for releasing the behavior of the first retaining part in preventing the first sensing rod from rotating when the first sensing rod is prevented from rotating by the first retaining part; and the first sensing rod is used for releasing the behavior of the second retaining part in preventing the second sensing rod from rotating when the second sensing rod is prevented from rotating by the second retaining part.