Dynamic information storage or retrieval – Dynamic mechanism subsystem – Having power driven transducer assembly
Patent
1998-02-18
2000-05-02
Ometz, David L.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Having power driven transducer assembly
369223, 369244, G11B 1730, G11B 555
Patent
active
060580984
ABSTRACT:
The head driving device of the invention is provided with a head unit guided by a guide member, which is provided movably along a recording medium, a screw shaft provided along a moving direction of the head unit, a driving unit for giving a torque to the screw shaft, and a spirally engaging member supported by the head unit, which is spirally engaged with the screw shaft. In the this construction, the spirally engaging member is formed of a first engagement member supported by the head unit, which is engaged with the screw shaft, and a second engagement member engaged with the screw shaft at a position different from the position of the first engagement member, which keeps a relatively movable position with the first engagement member. Further the spirally engaging member is provided with an energizing member that gives suppression forces each having the opposite direction to the other in the axial direction of the screw shaft to the first engagement member and the second engagement member. With the head driving device thus constructed, the backlash generated between both the engagement members and the screw shaft will be absorbed without increasing the rotating load of the screw shaft.
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Alpine Electronics Inc.
Castro Angel
Ometz David L.
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