| 摘要 |
This is a loading mechanism by which a disk cartridge can be positively loaded into a disk drive apparatus. The loading mechanism comprises: a mechanism for opening and closing a shutter of the disk cartridge inserted into the disk drive apparatus; an elevating plate on which a spindle motor for rotating the disk and an alignment pin for positioning the cartridge are mounted; and an oblique surface for moving the elevating plate onto the cartridge side in accordance with insertion of the cartridge. In the first embodiment, a front end portion of the first alignment pin inserted into a long reference hole of the cartridge is tapered, and only a front end portion of the second alignment pin inserted into a circular reference hole on the opposite side to the first alignment pin is curved, and further the second alignment pin is offset onto the rear side of the apparatus. In the second embodiment, a shutter opening and closing member includes: first and second opening and closing pieces which slide in a guide groove of a guide frame forming an insertion passage of the cartridge; and a torsion spring. In the first and the second opening and closing pieces, there are provided a shaft portion for engaging one end of the torsion spring, and a flange which interposes the guide groove. In the third embodiment, on the elevating plate, there are provided two sets of guide pins, which are arranged perpendicularly to the cartridge inserting direction, symmetrically with each other, and on the load plate of the elevating means, there are provided two oblique surfaces on the right and two oblique surfaces on the left which receive the guide pins and pull up the guide pins when the load plate is moved, and starting positions of these oblique surfaces are arranged being shifted in the longitudinal direction.
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