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Vibration type gyroscope and method for manufacturing vibration type gyroscope

  • US 20060070442A1
  • Filed: 09/29/2005
  • Published: 04/06/2006
  • Est. Priority Date: 09/30/2004
  • Status: Active Grant
First Claim
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1. A vibration-type gyroscope that detects a rotation angular velocity to be applied to a piezo-electric vibration reed, the piezo-electric vibration reed comprising:

  • a base;

    a drive section for carrying out a predetermined vibration, the drive section being provided through a supporting beam extended from the base;

    a detection section for detecting a detection vibration caused by a Coriolis force involved in rotation of the drive section, the detection section being extended from the base into a same plane as that of the drive section;

    a first deadweight portion used for characteristic adjustment of the piezo-electric vibration reed, the first deadweight portion being formed in a tip portion of the drive section; and

    a second deadweight portion used for characteristic adjustment of the piezo-electric vibration reed, the second deadweight portion being formed in a tip portion of the detection section;

    wherein at least one of the first deadweight portion and the second deadweight portion is formed of a plurality of adjustment portions having different mass per unit area.

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