Patent ID: 6811332
Filing Date: 2004-11-02
Classification: G03B

Abstract:
An apparatus having a push-operable operation member, comprising:a shaft portion disposed in the operation member and extending in a push direction; a claw portion disposed in the operation member and projecting toward the outside of the operation member; a base having a shaft hole portion to slidably support the shaft portion and an insertion hole portion into which the claw portion is inserted the base being provided with the operation member, the shaft hole portion and the insertion hole portion being formed as through holes which extend from an outer side of the base to an inner side thereof, and allow the shaft portion and the claw portion to be inserted in the push direction into the through holes, respectively; an abutting surface disposed on the base and capable of abutting on the claw portion; and an urging member to urge the operation member in a direction in which the claw portion and the abutting surface abut on each other; wherein the claw portion is inserted into the insertion hole portion in attaching the operation member to the base, the operation member is then rotated around the shaft portion, and the claw portion is set at a position to abut on the abutting surface and prevent the operation member from falling from the base, and wherein the insertion hole portion is so sized and located relative to the shaft hole portion as to enable disattaching the operation member from the base by counter-rotating the operation member to a position where the claw portion can be withdrawn through the insertion hole portion.