Patent ID: 9565931
Date: 2017-02-14
CPC Classifications: A47B,B41J,E05D,E05Y,E06B

Claim:
1. An opening/closing structure of a cover, comprising: a casing having an opening; and a cover configured to be rotatable with respect to the casing to open/close the opening, wherein one of the casing and the cover is formed with a shaft part having a shaft, and the other of the casing and the cover is formed with a bearing part having a bearing, wherein one of the shaft part and the bearing part is formed with one of a protrusion and a relief part on a part of an end surface in an axial direction, and the other of the shaft part and the bearing part is formed with the other of the protrusion and the relief part on a facing surface which faces the end surface, wherein the protrusion circumvents, corresponding to the relief part, contacting the end surface or the facing surface on which the relief part is formed when the cover is in a closed state in which the cover closes the opening, and wherein, when the cover is in an open state in which the cover is opened, from the closed state, by a particular angle, the protrusion moves out of the relief part and contacts one of the end surface and the facing surface on which the relief part is formed so as to be applied with a resistant force against rotation of the cover.