Patent ID: 6920788
Filing Date: 2005-07-26
Classification: B81B,G01P

Abstract:
1. An acceleration sensor comprising: a displacing section; a fixed section provided adjacent to said displacing section; a connecting portion for connecting said displacing section to said fixed section so that said displacing section can displace; a weight connected to said displacing section below; a pedestal which is disposed adjacent to said weight; a pedestal joint layer connecting said pedestal and said fixed section; and a displacement detector for detecting a displacement of said displacing section; wherein said weight includes an upper surface peripheral portion that opposes a control surface formed on a lower surface of said fixed section so that when an acceleration with a certain degree of magnitude is applied to said weight, said upper surface peripheral portion comes into contact with said control surface to control displacement, and wherein a weight joint layer made of the same material as that of the pedestal joint layer is provided between the weight and the displacing section, and said weight and said displacing section are joined together by said weight joint layer.