To attain lowering of spring constant, improvement of disengagement of a chevron projection 33 form a restraining hole 16 and load reduction at the time of inserting a MD 11 as to a plate spring 28 for moving a shutter 15 from an open position to a close position at the time of ejecting the MD 11 in a holder 10 for the MD.
The plate spring 28 is provided with a pad part 29 which is fixed to a right sidewall 21 by a joining point 34, an extending part 30 which extends from the pad part 29 toward an inserting/extracting port 23 along an upside of the right sidewall 21, a connecting part 31 hanging from an edge part of the inserting/extracting port 23 side of the extending part 30 and a return part 32 which extends from a lower end part of the connecting part 31 toward the pad part 29 in parallel to the extending part 30. The chevron projection 33 is formed at an edge part of the pad part 29 side of the return part 32 and goes in and out the restraining hole 16 according to spring force of the plate spring 28.
SUWA TAKAFUMI
NAKAMURA TAKASHI
TOGAWA HISANORI
