Patent ID: 7873303
Filing Date: 2011-01-18
Classification: G03G,Y10T

Abstract:
1. An upper frame opening and closing mechanism, comprising: an upper frame pivotally attached to a main body unit so as to be opened and closed on a hinge, which receives a moment in an opening direction due to gravity when the upper frame is opened at an angle exceeding an inversion angle so as to expose an interior of the main body unit; an arm member, a base end of which is pivotally mounted on the upper frame; a rail member mounted on the main body unit, to guide a leading edge of the arm member along with opening and closing of the upper frame; a biasing member to bias the upper frame in the opening direction; and a cushion member provided to an end edge of the rail member, to be pressed by the leading edge of the arm member so as to cushion the opening of the upper frame when the upper frame is opened at a maximum opening angle relative to the main body unit.