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发明授权
US07755252B2 Driving device having suitable stationary member as material 失效
具有合适的固定构件作为材料的驱动装置

Driving device having suitable stationary member as material
摘要：
A driving device includes an electro-mechanical transducer having first and second end portions opposite to each other in an expansion/contraction direction, a stationary member coupled to the first end portion of the electro-mechanical transducer, a vibration friction portion mounted to the second end portion of the electro-mechanical transducer, and a rod-shaped moving portion frictionally coupled to the vibration friction portion, whereby moving the moving portion in the expansion/contraction direction of the electro-mechanical transducer. The stationary member consists essentially of a base alloy which consists of, by weight, 88 to 97% tungsten, 2 to 11% nickel as a binder, and, as the balance, 0.1 to 2% at least one metal having an ionization tendency which is higher than that of tungsten. The stationary member has a surface without nickel plating.
摘要（中）：

一种驱动装置，包括具有在膨胀/收缩方向上彼此相对的第一和第二端部的机电换能器，耦合到机电换能器的第一端部的固定部件，安装到第二端部的振动摩擦部分 机电换能器的端部，以及与振动摩擦部摩擦连接的杆状移动部，由此使机电换能器的伸缩方向移动移动部。 固定件基本上由基体合金组成，该基础合金由重量百分比为88％至97％的钨，2％至11％的镍作为粘合剂，而作为余量由0.1至2％的至少一种具有电离倾向的金属 高于钨。 固定件具有不镀镍的表面。

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