Vibrators and vibratory gyroscopes
First Claim
1. A vibrator comprising:
- at least one bending vibration arm vibrating in bending mode along a specified plane, said bending vibration arm having first and second ends and first and second main faces that are substantially parallel with each other;
a base portion provided at one of said first and said second ends of said bending vibration arm;
a groove formed on each said first and second main faces; and
a through hole formed between said first main face and said second main face and in communication with said grooves.
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Accused Products
Abstract
A vibrator for generating a signal for measuring a physical quantity using a vibrator is provided, including at least one bending vibration arm vibrating in bending mode along a specified plane and having a first end, an opposed second end, and first and second main faces that are substantially parallel with each other. A base portion is provided at the first provided at the first end of the bending vibration arm, a weight portion is provided at the second end of the bending vibration arm, and grooves are formed on the first and second main faces. The vibrator further includes driving means for exciting a driving vibration in the vibrator, and detecting means provided on one of the bending vibration arms for detecting an output signal based on detection vibrations induced in the vibrator responsive to the physical quantity to be measured.
48 Citations
23 Claims
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1. A vibrator comprising:
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at least one bending vibration arm vibrating in bending mode along a specified plane, said bending vibration arm having first and second ends and first and second main faces that are substantially parallel with each other; a base portion provided at one of said first and said second ends of said bending vibration arm; a groove formed on each said first and second main faces; and a through hole formed between said first main face and said second main face and in communication with said grooves. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vibrator comprising:
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a first bending vibration arm vibrating in a bending mode along a specified plane; a second bending vibration arm vibrating in a bending mode along said specified plane; a base portion provided between said first and said second vibration arms; a first main face; and a groove continuously formed in said first bending vibration arm, said second bending vibration arm and said base portion on said first main face. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A vibrator comprising:
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a first bending vibration arm vibrating in bending mode along a specified plane; a second bending vibration arm vibrating in bending mode along said specified plane; a base portion provided between said first and said second bending vibration arms; a first main face; and a groove continuously formed in said first bending vibration arm and said base portion on said first main face; wherein said first and said second bending vibration arms are formed along a substantially straight line. - View Dependent Claims (20, 22)
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19. The vibrator comprising:
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a first bending vibration arm vibrating in a bending mode along a specified plane; a second bending vibration arm vibrating in a bending mode along said specified plane; a base portion provided between said first and said second bending vibration arms; a first main face; a first groove continuously formed in said first bending vibration arm and said base portion on said first main face; and a second groove continuously formed in said second bending vibration arm and said base portion on said first main face; wherein said first and said second bending vibration arms are formed along a substantially straight line. - View Dependent Claims (21, 23)
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Specification