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Meter unit having magnetic pointer position detector

  • US 6,940,269 B2
  • Filed: 08/08/2003
  • Issued: 09/06/2005
  • Est. Priority Date: 09/05/2002
  • Status: Expired due to Fees
First Claim
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1. A meter unit comprising:

  • a scale;

    a pointer that rotates over the scale;

    a pointer control means;

    a rotation member controlled by the pointer control means integrally with the pointer; and

    a pointer position detector for detecting that the pointer is positioned in a predetermined position over the scale, wherein the pointer position detector includes;

    a magnetic material installed in a part of the rotation member; and

    an output coil for generating magnetic flux toward the rotation member and a detection coil for detecting the magnetic flux thereby to magnetically detect that the pointer is positioned at the predetermined position over the scale.

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