Patent ID: 8611792
Filing Date: 2013-12-17
Classification: G03G

Abstract:
1. An opening/closing device which opens and closes an upper unit case with respect to a lower unit case, the opening/closing device comprising: a hinge section which is provided with respect to end portions of the upper and lower unit cases and which supports the upper unit case rotatably in up and down direction with respect to the lower unit case; a pair of guide members including a lower guide member and a upper guide member, the lower guide member being provided on the lower unit case to extend from a side of the hinge section toward a side of a free end opposite to the hinge section, the upper guide member being provided on the upper unit case to extend from a side of the hinge section to a side of a free end opposite to the hinge section, at least one guide member of the pair of guide members being configured to be swingable in the up and down direction with a portion thereof on the side of the free end as a swinging center, and one of the pair of guide members being formed to warp convexly and the other of the pair of guide members being formed to have a linear shape; a movable body which is connected movably to the upper and lower guide members and which has a rotary body installed in the movable body and fitted rollably with respect to the upper and lower guide members, the movable body being configured so that while the upper unit case is being opened with respect to the lower unit case, the movable body moves along the upper and lower guide members from the side of the free end to the side of the hinge section, and that while the upper unit case is being closed with respect to the lower unit case, the movable body moves along the upper and lower guide members from the side of the hinge section to the side of the free end; and a regulating mechanism which regulates swinging amount in the up and down direction, at the side of the hinge section, of the at least one guide member configured to be swingable in the up and down direction.