Patent ID: 7424248
Filing Date: 2008-09-09
Classification: G03G

Abstract:
1. A lock mechanism for an opening and closing member, comprising: an opening and closing member that is provided on an apparatus frame and that can be opened and closed, the opening and closing member having an opening and closing axis proximate one side of the opening and closing member; and at least two lock member sets for sustaining a state in which the opening and closing member is closed with respect to the apparatus frame, wherein each of the at least two lock member sets is constituted by a secured member that is provided on the opening and closing member, and a bearing member that is provided on the apparatus frame and that is to elastically secure the secured member, wherein the bearing members of each of the at least two lock member sets are provided on a common side of the apparatus frame, an elastic force when the secured member in any one lock member set of the at least two lock member sets is secured to the bearing member is set to be greater than that of the other lock member set, the at least two lock member sets are provided at a second side of the opening and closing member, opposed to the one side, the at least two lock member sets are arranged so that each lock member set is aligned in a line approximately along a width direction of the opening and closing member, in one lock member set, the secured member comprises a through hole portion and the bearing member has a downward convex portion to engage the through hole portion, and the secured member, in the any one lock member set, secured to the bearing member with the greater elastic force is disposed at a substantially center position in a direction perpendicular to an opening and closing direction of the opening and closing member.