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MAGNETIC SPRING DEVICE

  • US 20150028975A1
  • Filed: 02/18/2013
  • Published: 01/29/2015
  • Est. Priority Date: 02/27/2012
  • Status: Active Grant
First Claim
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1. A magnetic spring device comprising:

  • a permanent magnet;

    a first yoke and a second yoke, disposed so as to oppose each other with the permanent magnet interposed therebetween;

    a movable element, made from a magnetizable body, provided so as to enable linear movement in an axial direction thereof, in a state wherein a location of an axis is constrained, between the first yoke and the second yoke, away from the permanent magnet, where a magnetic path of a magnetic flux that exits from an N-pole of the permanent magnet and returns to a S-pole is formed together with the first yoke and the second yoke; and

    a magnetic flux distribution controlling portion that changes a distribution of an amount of magnetic flux that is provided from the permanent magnet through the first yoke and the second yoke to the movable element, and an amount of magnetic flux from the permanent magnet that is not provided to the movable element.

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