Patent ID: 6195312
Filing Date: 2001-02-27
Classification: G11B

Abstract:
A CD changing device comprising:a case having a hollow cavity and an open upper side,a bottom disc positioned above said case,a turntable positioned on said bottom disc, said turntable receives a CD,a CD reading mechanism,a gear group, anda motor to drive said gear group and said turntable; whereinsaid case comprises a straight slide groove and a rack on an upper surface of a bottom of said case, said slide groove has two ends respectively provided with a right-biasing mouth and a left-biasing mouth, said gear group having a projecting gear rotating said turntable, said projecting gear having a limit rod extending down from a lower surface, said limit rod having a spring to force said limit rod move straightly, said limit rod carrying a slide block under its bottom to move together, said slide block having two feet extending in said slide groove of said case and two parallel projections facing each other and forming an opening therebetween, said two projections each have a recess at one end, a vertical face, and a curved face extending downward from said vertical face, said limit rod is positioned at connect ends of said two projections and is prevented from moving by said two projections, said projecting gear and said turntable are also prohibited from rotation when said slide block is moving in said slide groove;said projecting gear rotates the turntable when said slide block is moved to the innermost or the outermost point of said slide groove, forcing said limit rod to separate from one of said projections of said slide block and move towards said recess and rotate along said curved face clockwise or counterclockwise;said bottom disc having a bottom gear engaging said rack of said case to permit said bottom disc to move in a straight line when said bottom gear is rotated, a teeth base is provided on said rack, and said teeth base includes a hook with a curved portion facing said rack, said bottom disc having a hook pin to secure said hook of said teeth base so as to let said bottom disc move back into said case and to be secured therein.