Patent ID: 8059363
Filing Date: 2011-11-15
Classification: G11B

Abstract:
1. A magazine holding structure having a mechanism to control an extraction of a magazine from a case, wherein the magazine includes a rail member which is installed on bottom surface of the magazine approximately parallel to an insertion/extraction direction, the rail member including a plurality of stepped portions formed at a side surface thereof; wherein the case includes a lock member which is installed rotatably within the same plane as the bottom surface of the magazine, the lock member including one portion which is located in a space below the magazine and another portion which is located beside the magazine, an urging member which urges in a direction in which the rail member is installed so that a portion of the lock member located corresponding to the bottom surface of the magazine is engaged with the stepped portion, and a movement mechanism which moves beside the magazine along the insertion/extraction direction of the magazine; and wherein the lock member engaged with each stepped portion is released in such a way that the movement mechanism moved in the extraction direction of the magazine rotates the lock member in an opposite direction to an urging direction of the urging member.