駆動装置、レンズ駆動装置、及びカメラ

Driving device, lens driving device and camera

Abstract

<P>PROBLEM TO BE SOLVED: To enlarge the displacement amount in the longitudinal direction of a wire made of a shape memory alloy. <P>SOLUTION: This driving device includes: a bendable wire made of a shape memory alloy; an energizing means for producing tensile force in the longitudinal direction of the wire; a bending means having a plurality of abutting parts abutting on the wire for bending the wire; and an exciting means for applying an electric current through the wire through the abutting parts, wherein the plurality of abutting parts are abutted on the wire, and the wire is displaced in the longitudinal direction by the energizing means. In the wire of the respective sections determined by the abutting parts adjacent to each other, the abutting parts to which the electric current is applied are determined so that the sections are different in amount of electric current flowing through the wire. <P>COPYRIGHT: (C)2006,JPO&NCIPI
【課題】 形状記憶合金からなる線材の長手方向の変位量を大きくする。 【解決手段】 形状記憶合金からなる屈曲可能な線材と、線材の長手方向に張力を生じさせる付勢手段と、線材に当接する複数の当接部を有し、線材を屈曲させる屈曲手段と、当接部を介し線材に電流を流す通電手段と、を備え、複数の当接部が線材に当接すると共に、付勢手段により線材を長手方向に変位させるように構成され、互いに隣接する当接部で定まる各区間の線材において、線材に流れる電流量が異なる区間が存在するように、電流を流す当接部を決定する。 【選択図】 図42

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Cited By (7)

    Publication numberPublication dateAssigneeTitle
    EP-1992817-A2November 19, 2008Konica Minolta Opto, Inc.Antriebsvorrichtung und Linsenantriebsvorrichtung
    JP-2008138593-AJune 19, 2008Material House:Kk, Ryooichi:Kk, Shonai Create Kogyo:Kk, 有限会社リョーイチ, 株式会社 マテリアルハウス, 株式会社庄内クリエート工業アクチュエータ
    JP-2010262178-ANovember 18, 2010Mitsumi Electric Co Ltd, ミツミ電機株式会社レンズ駆動装置
    JP-5878869-B2March 08, 2016株式会社青電舎衝撃駆動型アクチュエータ
    JP-WO2016035397-A1April 27, 2017株式会社村田製作所駆動装置
    US-7688533-B2March 30, 2010Konica Minolta Opto, Inc.Drive apparatus and lens drive apparatus
    WO-2016035397-A1March 10, 2016株式会社 村田製作所Driving device