Patent ID: 7747005
Filing Date: 2010-06-29
Classification: E05F,E05Y,H04M,Y10T

Abstract:
1. An opening and closing mechanism comprising: a fixed member including a fixed cam on its side face; a movable member rotatably disposed relative to the fixed member for rotation about a rotation axis extending in an axial direction; a case, the fixed member and the movable member being housed in the case; and a spring applying a force toward the fixed member to the movable member, the spring constituting a coil spring having first and second ends; wherein the movable member includes wherein the movable member has a recess therein that is coaxial with the rotation axis of the movable member and that opens in the axial direction away from the fixed member, the recess having an open end and a closed end, the open end opening through the second surface, and the closed end constituting a recess bottom, the recess extending from the second surface toward the second portion; wherein the recess has an inner circumferential diameter greater than an outer circumferential diameter of the spring; wherein the first end of the spring is inserted in the recess and contacts the recess bottom to be urged by the recess bottom, the second end of the spring contacting the case; and wherein the recess bottom is located, in a direction along the axial direction, closer to the fixed member than at least a part of the first surface of the first portion of the movable member.