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Linear actuator for both vibrating and rolling movement and electric toothbrush using the same

  • US 7,443,059 B2
  • Filed: 01/12/2006
  • Issued: 10/28/2008
  • Est. Priority Date: 01/19/2005
  • Status: Expired due to Fees
First Claim
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1. A linear actuator for both vibrating and rolling movement, comprising:

  • a shaft supported so as to be movable reciprocally in an axis direction and a rotation direction about the axis,a first linear driver including a cylindrical stator having a winding wire thereon and a movable member arranged inside the stator so as to reciprocate said shaft linearly in the axis direction,a second linear driver including a cylindrical stator having a winding wire thereon and a movable member arranged inside the stator so as to reciprocate said shaft rollingly in the rotation direction, one of said movable members being secured on said shaft and another one of said movable members being movable relative to said shaft, anda coordinating member for enabling said shaft and said one of said movable member to move in opposite phase to said another one of said movable member.

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