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31. 发明专利

JPH01151055A MAGNETIC DISK RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH01151055A
公开(公告)日：1989-06-13
申请号：JP30984187
申请日：1987-12-08
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHINAKA TAKESHI , OKUDA MASUMI , NISHIMURA TOSHIYUKI , SAKAMI KAZUO , OGATA MOTOKI
IPC分类号： G11B17/04 , G11B17/035 , G11B17/043
摘要： PURPOSE:To improve the reliability against an impact by equipping the lever having 1st, 2nd tongue pieces and the 3rd tongue piece arranged at the upper part of the projection part of the side face of a holder. CONSTITUTION:A loading mechanism is composed of the holder part 12 holding a magnetic disk cartridge 1, executing a rotary operating with one end as the fulcrum and having a projection part at side face, and the lever having the 1st tongue piece 14a rotated centering around a fulcrum and combined with the button 13 for discharging a cartridge, the 2nd tongue piece 14b coming in contact with the lower face of the holder 12 and the 3rd tongue piece 14c arranged at the upper part of the projection part of the side face of the holder 12. Namely the 3rd tongue piece of the lever of the loading mechanism is arranged at the projection part upper part of the side face of the holder, hence the discharging of unnecessary magnetic disk is prevented. The impact resistance is thus improved.

32. 发明专利

JPS639058A MAGNETIC DISK RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPS639058A
公开(公告)日：1988-01-14
申请号：JP15242986
申请日：1986-06-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKUDA MASUMI , YOSHINAKA TAKESHI , NISHIMURA TOSHIYUKI , SAKAMI KAZUO , OGATA MOTOKI
IPC分类号： G11B17/028
摘要： PURPOSE:To reduce the number of parts and to reduce the cost of a device by arranging a clamper consisting of molded resin in the projecting circular hole part of a holder through a spacer and a coil and fixing its shaft end part by a locking plate. CONSTITUTION:The clamper 25 having a rotary shaft 24 is inserted from the lower part of the projecting circular hole part 22 of a bent chip 23 through the coil spring 26 and the spacer 27 and the locking plate 29 is pressed and locked into/on the upper projected part 28 of the shaft 24 to form a holder 10. When a magnetic disk 1 is loaded, its hub 20 is pressed by the clamper 25 and pressed against the hum receiving board 21 of a spindle part. Thereby, the number of parts can be reduced, its assembling process can be simplified and the price can be reduced.

33. 发明专利

JPS61160884A MAGNETIC DISK RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPS61160884A
公开(公告)日：1986-07-21
申请号：JP138385
申请日：1985-01-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OGATA MOTOKI
IPC分类号： G11B21/02 , G11B19/14 , G11B21/08 , G11B21/10 , G11B21/12 , G11B21/22
摘要： PURPOSE:To facilitate control of positions of a position detecting element and a stopper by providing a cut part which detects that a magnetic head stage is positioned at the most outer circumference of a magnetic disk to a cylinder together with a stopper part which prevents the overrunning of the head stage and setting a position detecting element opposite to the cut part. CONSTITUTION:Light shown by an arrow head (b) delivered from a light emitting element 24 of a position detecting element 23 is not made incident on a photoreceptor since no reflected light shown by an arrow head (c) is sent back as long as no reflecting plate 21 is set at the front side. A control circuit 9 confirms that a magnetic head stage 10 is not positioned at the most outer circumference of a magnetic disk and allows the stage 10 to move toward an arrow head (a). A cylinder 17 is revolved in the direction of an arrow head (d) with drive of a pulse motor 8. Then the stage 10 moves toward an arrow (a) and the plate 21 moves to the inside of the end face of the cylinder 17. When the reflected light is made incident on the photoreceptor via a cut 19, the circuit 9 confirms that the stage 10 is positioned at the most outer circumference of the disk. A stopper part 18 of the cylinder 17 hits a stopper 22 of the stage 10 to stop the movement of the stage 10.

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