Patent ID: 6578419
Filing Date: 2003-06-17
Classification: B60R,G01P

Abstract:
An acceleration sensor comprising:a supporting body attached to an inclinable inclining member, which said supporting body can rotate at least around an axis that is parallel to a center of rotation of the inclining member; a moving body supported to said supporting body, which moving body inertially moves due to an acceleration at or above a predetermined value applied to said supporting body, and drives an output member; a mass body, which, by a weight of said mass body, applies torque to said supporting body to a direction such that said supporting body has a predetermined angle with respect to a horizontal plane; and a rotating mechanism, which followingly moves in accordance with an inclination of the inclining member, and enables said supporting body to be independently rotated within a predetermined range by the torque from said mass body such that said supporting body has the predetermined angle with respect to the horizontal plane, said rotating mechanism including a wheel, which can rotate coaxially with said supporting body, and which rotates in accordance with an angle of inclination of the inclining member, a first abutting body provided so as to protrude from said wheel toward said supporting body, and a second abutting body provided so as to protrude from said supporting body toward said wheel, wherein said first and second abutting bodies form a predetermined clearance, and enable said supporting body to rotate independently of said rotating mechanism within the predetermined range due to the predetermined clearance.