Title: Impact-resistant acceleration sensor
Application Number: 200610110069 Application Date: 2006.08.04
Publication Number: 1908676 Publication Date: 2007.02.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01P15/12
Applicant(s) Name: Hitachi Metals Ltd. Address:
Inventor(s) Name: Hatano Hiroyuki;Takada Yoshiaki;Saitoh Masakatsu
Attorney & Agent: kang jianzhong
Abstract:
    An acceleration sensor, which has realized such a high impact-resistance that a weight bottom surface of an acceleration sensor element does not directly collide with an inner bottom plate of a protection case made of ceramic, glass or silicon to avoid edges and corners of the weight bottom surface of the acceleration sensor element chipping, even when an excessive acceleration or impact is applied to the acceleration sensor. The acceleration sensor comprises the acceleration sensor element having in a center a weight that works as a pendulum when acceleration is applied, and the protection case housing the acceleration sensor element. The inner bottom plate of the protection case works as a regulation plate to prevent the weight from excessively swing downwards. An impact buffer material of a metal layer or a resin layer is provided on the weight bottom surface or the inner bottom plate of the protection case.
Time: 7
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