Patent ID: 6760006
Filing Date: 2004-07-06
Classification: A63F,G05G

Abstract:
An acceleration measuring apparatus, comprising:a movable part provided with a substantially spherical part at a lower end thereof and further provided with a weight, so that when an acceleration is experienced, said movable part is inclined under an effect of a force exerted at said weight; bearing means in contact with and rotatably supporting said substantially spherical part of said movable part; recovery means which rotates said substantially spherical part within said bearing means so as to recover an upright position of the movable part; and inclination detecting means which detects a direction of inclination and an angle of inclination of said movable part, wherein the acceleration is measured based on the direction of inclination and the angle of inclination of said movable part, and wherein said recovery means comprises a cover having a cylindrical part, a flange protruding outward from said substantially spherical part, a slider slidably provided in said cylindrical part of said cover, a lower end of said slider being supported by said flange, and a spring which downwardly spring-biasing said slider, wherein, when said movable part is inclined, said slider is pushed up by said flange and said spring is elastically deformed, and when said movable part is released, said slider is pushed down by an elastic force of said spring and said slider pushes said flange, so that said movable part recovers to an original position thereof.