Vibrator and vibrating gyroscope using the same
AssigneeMurata Manufacturing Co., Ltd.
InventorsTohru Kasanami, Takeshi Nakamura, Keiichi Okano, Yoshiki Morishita
Life of this patent
Estimating the term…
Abstract
The vibrator includes, for example, a triangular prism shaped vibrating body. On each of three side faces of the vibrating body, piezoelectric elements are formed respectively. The vibrating body makes bending vibration by giving a driving signal to one or two piezoelectric elements. The vibrator is used in a vibratory gyroscope. In this case, for example, one piezoelectric element is used for vibrating the vibrator. When a rotating force is applied to the vibratory gyroscope, a Coriolis force is exerted to produce output voltages on the remaining two piezoelectric elements corresponding to the rotational angular velocity.
Claims13
A vibrator comprising:
- a vibrating body having a polygonal section;
- a supporting base having an upper surface;
- a buffer formed on said upper surface of said supporting base;
- substrates dividingly formed on an upper surface of said buffer;
- a plurality of supporting members, secured respectively to said divided substrates, for supporting said vibrating body above said upper surface of said buffer;
- and
- a plurality of electrodes formed on each substrate, opposite end of each supporting member secured to two of said electrodes on each substrate.
A vibrator comprising:
- a vibrating body having a polygonal section;
- piezoelectric means associated with two side faces of said vibrating body which are not in parallel;
- and
- two supporting members for supporting said vibrating body,
- wherein said vibrating body is supported by said supporting members near nodal points thereof a) at an equally spaced relation from two faces of said vibrating body whereon said piezoelectric means are associated, and b) at two points on a longitudinal straight line of said vibrating body.
Dependencies are inferred from the claim text.