Patent ID: 9682853
Date: 2017-06-20
CPC Classifications: B81B,G01P,H01L

Claim:
1. An angular acceleration sensor comprising: a planar surface; a fixed portion; a weight supported by the fixed portion; a beam extending along the planar surface and connected to the fixed portion and the weight; and a detection element disposed in the beam and detecting stress due to deflection of the beam along the planar surface; wherein a dimension of the beam in a width direction, which is a direction parallel or substantially parallel to the planar surface and perpendicular or substantially perpendicular to an extension direction, is larger than a dimension, in the width direction, of a connection portion at which the beam is connected to the fixed portion; the detection element is disposed in a portion of the beam other than edge portions of the beam in the extension direction; and the portion of the beam includes a dimension in the width direction that is wider than a dimension of the connection portion in the width direction.