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VIBRATION ACTUATOR

  • US 20140035397A1
  • Filed: 07/30/2013
  • Published: 02/06/2014
  • Est. Priority Date: 07/31/2012
  • Status: Active Grant
First Claim
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1. A vibration actuator in which a magnet vibrates linearly in a housing along a vibration axis as a result of cooperation of a coil and the magnet, the vibration actuator comprising:

  • the housing;

    the coil that is disposed in the housing;

    the magnet that is surrounded by the coil; and

    a weight that vibrates together with the magnet along the vibration axis, the weight including a weight body portion and an inner-side enlarged portion, the weight body portion being urged by a compression coil spring disposed along the vibration axis, the inner-side enlarged portion having an outer peripheral surface, protruding from the weight body portion in a direction of the vibration axis, and being inserted into an opening portion extending within the compression coil spring along the direction of the vibration axis,wherein the outer peripheral surface of the inner-side enlarged portion becomes smaller in diameter from a base end towards a free end, the vibration axis being a center of the diameter.

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