Optic disc retaining structure

Abstract

An optic disc retaining structure includes an optic disc, a disc carrier, and magnetically attractive device, wherein the carrier forms a hub in the form of a projection extending from a surface of the carrier without any transverse outward protrusion and having an outside diameter substantially corresponding to an inside diameter of a central bore of the optic disc. The magnetically attractive device includes a thin plate of magnetically attractive material and a flexible magnet mounted to and surrounding the central bore of the disc and the hub whereby the disc can be easily disposed into the carrier and attached thereto by the magnetic attraction between the thin plate of magnetically attractive material and the flexible magnet and can be easily removed from the carrier.

1 . An optic disc retaining structure comprising an optic disc, a disc carrier, and magnetic attraction means, wherein: 
 the disc carrier forms a hub extending from a surface of the carrier and having an outside diameter substantially corresponding to an inside diameter of a central bore of the optic disc and thus engageable with the central bore; and    the magnetic attraction means comprises a thin magnetically attractive plate and a flexible magnet mounted to and surrounding the central bore of the disc and the hub to induce a magnetic attraction therebetween for securing the optic disc in the carrier.    
   
   
       2 . The optic disc retaining structure as claimed in  claim 1 , wherein the thin plate has an equally-angled configuration.