Angular velocity detecting apparatus of a vibration type

An angular velocity detecting apparatus comprising:

• a vibrator, wherein an X, Y and Z three-dimensional, orthogonal coordinate space, said vibrator has a vibrator base extending in the X-direction on the XY plane, two first vibrating bars projecting in the direction of +Y from said vibrator base and at substantially symmetric positions with respect to a Y-directional axis passing a central portion of said vibrator base, two second vibrating bars projecting in the same direction of -Y from said vibrator base and at the same X-directional positions as said two first vibrating bars do, and a single supporting rod having a prescribed torsional rigidity, formed integrally with said vibrator base to project from said vibrator base in the XY plane, and fixed at the tip thereof to a body to be detected, said vibrator base, said first vibrating bars, said second vibrating bars and said supporting rod are formed from one piece of substrate;
• an excitation unit that excites and vibrates said vibrator;
• a detecting unit that detects an amplitude of vibration based on Coriolis's force occurring with rotation of said vibrator excited to vibrate by said excitation unit;
• an angular velocity calculating unit that calculates an angular velocity of said rotation from a magnitude of the amplitude detected by said detecting unit;
• wherein said supporting rod projects in the direction of -Y from said vibrator base and said excitation unit excites and vibrates said first vibrating bars in the X-directions.