Title:
DRIVER
Document Type and Number:
Japanese Patent JP3168843
Kind Code:
B2
Abstract:
PURPOSE: To prevent the generation of the loss of a driver which is caused by a frictional force, by fastening one end of an electromechanical conversion element to a static member, and by fastening a driving member to the other end of the electromechanical conversion element, and further, by engaging variably a moving member in frictionally coupled with the driving member, and moreover, by so supporting both the moving and driving members that they can move respectively in their extending directions.
CONSTITUTION: As shown in Fig. A, when a voltage is applied to a piezoelectric element 10, it is extended, and an upward force acts on an inertial member 11 and a downward force acts on a frictional member 5, and further, the frictional member 5 is contacted in a pressed way with a driving shaft 3. But, when the voltage is released from the piezoelectric element 10, the frictional force generated between the frictional member 5 and the driving shaft 3 is reduced. By the utilization of this phenomenon, as shown in Fig. B, when a voltage is applied to a piezoelectric element 2 and the voltage is released from the piezoelectric element 10, the piezoelectric element 2 is extended, and as shown in Fig, C, the driving shaft 3 is displaced rightmost, but the frictional member 5 remains in the place. As shown in Fig. D and Fig. E, when a voltage is applied to the piezoelectric element 10 and the voltage is released from the piezoelectric element 2, the frictional member 5 is displaced leftmost. As mentioned above, by the varying of a frictional force, the frictional force of a suitable value can be given to the frictional member 5.
Inventors:
Yasuhiro Okamoto
Ryuichi Yoshida
Ryuichi Yoshida
Application Number:
JP24033994A
Publication Date:
May 21, 2001
Filing Date:
October 04, 1994
Export Citation:
Assignee:
Minolta Co., Ltd.
International Classes:
G02B7/04; H02N2/00; (IPC1-7): H02N2/00; G02B7/04
Domestic Patent References:
| JP469070A | ||||
| JP670565A | ||||
| JP572361A | ||||
| JP670565A |
Other References:
１９９４年度精密工学会秋季大会実行委員会編「１９９４年度精密工学会秋季大会学術講演会論文集第３分冊」（平６−９−１２）発行者 社団法人精密工学会 Ｐ．９４１−９４２（Ｍ７９ 圧電リニアアクチュエータの開発）
Previous Patent: 放熱モジュール構造
Next Patent: FUSION SPLICING METHOD OF CONSTANT POLARIZATION OPTICAL FIBER
Next Patent: FUSION SPLICING METHOD OF CONSTANT POLARIZATION OPTICAL FIBER