Driving device
AssigneeKonica Minolta Opto, Inc.
InventorsYasuhiro Okamoto, Tomoyuki Yuasa
Life of this patent
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Abstract
A piezoelectric element expands and contracts when a pulse voltage is applied. A fixing body is fixed to one end of the piezoelectric element in an expansion-contraction direction. A driving shaft is fixed to the other end of the piezoelectric element in the expansion-contraction direction. A movable body is supported to the driving shaft slidably. When a pulse voltage is applied to the piezoelectric element, the piezoelectric element contracts and expands. Accordingly, the driving shaft oscillates, and the movable body slides along the driving shaft. A material of the driving shaft is fiber reinforced resin complex. A synthetic resin material composing the fiber reinforced resin complex is liquid crystal polymer or polyphenylene sulfide.
Claims8
A driving device comprising:
- an electromechanical transducer which expands and contracts at the time of application of a voltage;
- and
- a movable body supporting member which supports a movable body slidably and is bonded to the electromechanical transducer so as to displace together with the transducer, said driving device moving the movable body along the supporting member using expansion and contraction of the electromechanical transducer,
- wherein a material of the supporting member is a fiber reinforced resin complex, and a synthetic resin material composing the fiber reinforced resin complex is liquid crystal polymer or polyphenylene sulfide.
Dependencies are inferred from the claim text.