A cover is received on the receiving surface of a base in a recording medium drive. A fastening mechanism serves to couple the cover to the receiving surface. An elastic member is interposed between the receiving surface and the cover. The elastic member is located along the occupied space of the fastening mechanism. The elastic member thus continuously surrounds the occupied space. When the cover is coupled to the base, the fastening mechanism urges the cover against the receiving surface of the base. Since the elastic member continuously surrounds the occupied space, the elastic member elastically deforms equally around the fastening mechanism. Flexure can thus be prevented in the base and the cover.

 
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