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DRIVING DEVICE

  • US 20170158173A1
  • Filed: 02/23/2017
  • Published: 06/08/2017
  • Est. Priority Date: 09/02/2014
  • Status: Abandoned Application
First Claim
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1. A driving device comprising:

  • a revolving member supported by a housing and configured to rotate in a first rotational direction and a second rotational direction opposite the first rotational direction about an axis;

    at least one shape memory alloy having a wire-like shape that is coupled to the revolving member and that shrinks when power is supplied thereto, such that an external force is applied to the revolving member acting in the first rotational direction;

    an elastic body coupled to the revolving member and configured to apply an external force to the revolving member acting in the second rotational direction;

    a target member coupled to the revolving member that is displaced when the revolving member rotates in the first and second rotational directions; and

    a power supply system including at least three power supply terminals disposed in the housing and electrically coupled to three separate positions of the at least one shape memory alloy, such that a potential difference between the power supply terminals adjacent to each other is applied to the at least one shape memory alloy.

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