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US 8,044,555 B2Granted
Driving apparatus
AssigneeFujinon Corporation
InventorRyota Sasaki
Life of this patent
Estimating the term…
Abstract
A driving apparatus comprises: an electromechanical conversion element that expands and contracts in an extending direction of a given fiducial line; a driving shaft mounted on one end of the electromechanical conversion element in the extending direction; a driven member frictionally engaged with the driving shaft; a holder that supports the electromechanical conversion element from lateral sides with respect to extending direction; and an urging member that urges the electromechanical conversion element in the extending direction.
Claims2
A driving apparatus comprising:
- an electromechanical conversion element that expands and contracts in an extending direction of a given fiducial line;
- a hollow driving shaft mounted on one end of the electromechanical conversion element in the extending direction;
- a driven member frictionally engaged with the driving shaft;
- a holder that supports the electromechanical conversion element and comprises a bearing portion for the driving shaft;
- a support member, disposed in the bearing portion, that comprises a fixing portion fixed in the holder and a fitted portion fitted from one end side in the driving shaft;
- and
- an urging member, arranged between the electromechanical conversion element and the fitted portion in the driving shaft, that urges the electromechanical conversion element in the extending direction.
4 more elements
Dependencies are inferred from the claim text.