Patent ID: 8664551

Claim:
An operating device, comprising: a first rotation operating knob which is rotated centered on a rotation axis extending in a front-back direction, a second rotation operating knob which is positioned on an exterior side in a rotation diameter direction of the first rotation operating knob and which is rotated centered on the rotation axis shared with the first rotation operating knob, a holding member which is interposed between the first rotation operating knob and the second rotation operating knob and which includes a tubular rotation operating knob holder holding the first rotation operating knob and the second rotation operating knob such that both are capable of mutually independent rotation, a first switch element which outputs a signal corresponding to a rotation amount of the first rotation operating knob, and a second switch element which outputs a signal corresponding to a rotation amount of the second rotation operating knob, wherein the rotation operating knob holder comprises: an inner circumferential surface including a first support surface having a substantially circular tubular shape centered on the rotation axis, and an outer circumferential surface including a second support surface having a diameter larger than the first support surface and having a substantially circular tubular shape centered on the rotation axis; the first rotation operating knob comprises: first switch operators provided at a plurality of positions aligned in a rotation circumference direction of the first rotation operating knob and causing the first switch element to output a first detection signal each time one of the first switch operators passes a position opposite the first switch element, and an outer circumferential surface including a first sliding surface having a substantially circular tubular shape and capable of sliding over the first support surface in the rotation circumference direction; and the second rotation operating knob comprises: second switch operators provided at a plurality of positions aligned in the rotation circumference direction of the second rotation operating knob and causing the second switch element to output a second detection signal each time one of the second switch operators passes a position opposite the second switch element, and an inner circumferential surface including a second sliding surface having a substantially circular tubular shape and capable of sliding over the second support surface in the rotation circumference direction.