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Key sheet for pointing device and pointing device

  • US 20050264530A1
  • Filed: 05/27/2005
  • Published: 12/01/2005
  • Est. Priority Date: 06/01/2004
  • Status: Active Grant
First Claim
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1. A key sheet for a pointing device in which a change in magnetic flux density, which occurs as a magnet laterally moves, is detected by at least one magnetic field sensor provided on a printed circuit board, the key sheet comprising a base sheet made of a rubber-like elastic body, comprising:

  • a support portion for supporting a magnet;

    a flexible portion that is laterally deformable to expand and contract so that the support portion can be laterally moved; and

    a directional deformation portion formed in the flexible portion, for guiding and displacing a reverse face of the flexible portion away from a front face of a printed circuit board as the support portion laterally moves.

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