Magazine holder construction and library device containing them

摘要

A construction comprising a mechanism for controlling the extension of a magazine (3) from a housing (200), the magazine (3) comprising a rail member (321) located on the underside (32) of the magazine (3) approximately parallel to a retraction / Extension direction, the rail member (321) having a plurality of stepped portions (322) formed on a side surface of the member; the housing (200) comprising: a locking member (211) rotatably mounted in the same plane as the lower surface (32) of the magazine (3), the locking member (211) having a portion located in a space below the magazine and another portion adjacent to the magazine (3) has a biasing member (23) urging in a direction in which the rail member (321) is mounted so that a portion of the locking member (211), is arranged to match with the underside (32) of the magazine (3), is engaged with the stepped portion, and a moving mechanism (4) which moves adjacent to the magazine (3) in the extending / retracting direction of the magazine; and wherein the locking member (211) engaged with each stepped portion is triggered so that the moving mechanism (4) moved in the extension direction of the magazine (3) pivots the locking member (211) in a direction opposite to the tightening direction of the tension member (23).