Patent ID: 8714013
Filing Date: 2014-05-06
Classification: G01C,G01P

Abstract:
1. An acceleration detector comprising: a base portion; a plate-like movable portion connected to the base portion via a joint portion; an acceleration detecting element laid over the base portion and the movable portion; a supporting portion having a part extending along the movable portion from the base portion, as viewed in a plan view; and a mass portion arranged on at least one of two main surfaces of the movable portion in such a manner that a part of the mass portion overlaps the supporting portion, as viewed in a plan view; wherein a space is provided between the mass portion and the supporting portion in an area where the mass portion and the supporting portion overlap each other so that the movable portion is displaceable about the joint portion as a fulcrum in a direction intersecting the main surface according to an acceleration applied in the direction intersecting the main surface.