Patent ID: 9184726
Filing Date: 2015-11-10
Classification: H03H

Abstract:
1. A piezoelectric vibrating strip comprising: a pair of vibrating arm portions in parallel and extending parallel to a central axis therebetween; and a base portion integrally cantilevering base end portions of the pair of vibrating arm portions in a length direction, wherein each of the pair of vibrating arm portions include a single first groove portion and a second groove portion in a main face thereof, the first and second groove portions separated from one another, the second groove portions of each of the vibrating arm portions are symmetrically located with respect to the central axis in the width direction of the piezoelectric vibrating strip, the single first groove portion closer to a leading end portion in the length direction of the vibrating arm portion and having a groove width W the second groove portion is closer to the base end portion than the single first groove portion and has a groove width W