TUNING FORK VIBRATOR FOR VIBRATING GYROSCOPE

摘要

PROBLEM TO BE SOLVED: To reduce drive vibrations leaking to detection legs 12 by suppressing the vertical asymmetricity of distortions in a body part caused by the constraint of a supporting member due to its fixation.

SOLUTION: Vertical asymmetricity in drive vibrations (distortions) in the body part 10 is caused by changes in a stress distribution caused by the junction of a tuning-fork vibrator 1 to a package by the supporting member. Grooves 10j and 10k in the longitudinal direction of drive legs 11 are provided for both side regions of a supporting member fixation region 1a in the bottom surface of the body part 10 to be joined to the supporting member. A constraint region by the supporting member is restricted in the region between the grooves 10j and 10k by this structure, and the body part 10 in a region outside the grooves 10j and 10k freely expands and contracts without being affected by the supporting member 2. Since most parts of the body part 10 are therefore not affected by the constraint action of the supporting member 2, the vertical asymmetricity in distortions in the body part 10 is suppressed to reduce drive vibrations leaking to the detection legs 12.

COPYRIGHT: (C)2006,JPO&NCIPI