Abstract: An operation device comprises: a plurality of operation members attached to a common supporting member; and a plurality of inserting components having the same configurations with one another. The operation members include latching apertures for securing the inserting components to the operation members and include a plurality of kinds of structure to be attached to the common supporting member so that opening directions of the latching apertures are different from one another. The inserting components include a plurality of latching projections that protrude outward from a main body, and have configurations that can engage the latching apertures in any one of the operation members. The latching projections protrude from the main body in a plurality of directions corresponding to the opening directions of the latching apertures so that any one of the latching projections can engage the latching aperture in any one of the operation members.

Abstract: An operation device comprises: a plurality of operation members attached to a common supporting member; and a plurality of inserting components having the same configurations with one another. The operation members include latching apertures for securing the inserting components to the operation members and include a plurality of kinds of structure to be attached to the common supporting member so that opening directions of the latching apertures are different from one another. The inserting components include a plurality of latching projections that protrude outward from a main body, and have configurations that can engage the latching apertures in any one of the operation members. The latching projections protrude from the main body in a plurality of directions corresponding to the opening directions of the latching apertures so that any one of the latching projections can engage the latching aperture in any one of the operation members.

Abstract: A rotary knob includes a knob main body body provided in a peripheral wall section with a slit, a light guide member that is fitted into the slit and includes a light emitting section and a pressure member for preventing a relative movement between the knob main body and the light guide member. The light emitting section includes a display portion that is fitted into the slit and an exposed surface and latching projections disposed inside the display portion in a radial direction and protrude outward from both sides of the slit in a width direction. The peripheral wall section includes a pair of slit peripheral edges that define the slit, and holding portions that are provided inside the slit peripheral edges and pinch the latching projections between the holding portions and the slit peripheral edges from both sides in the radial direction of the peripheral wall section.