To provide an operation section having less restriction of freedom relative to the designing of arrangement in case that the operation section of the vehicle is handled on manual, in which the section thereof is mechanically connected to an operated section through a co-operation mechanism.

In the present invention there are equipped with a rotative operation section 3 in the shape of a ring, an operation shaft 4 which is freely rotatable and supported by a fixed part 2 and a connective section 4b extended from the operation shaft 4 toward the direction of a radius and connected to the rotative operation section 3, and the rotative operation section 3 and the operated section are mechanically connected through the co-operation mechanism with the operation shaft 4 and the rotative operation section 3 being supported thereby. There are also provided with a non-rotative section 6 placed inward in the direction of a radius of the rotative operation section 3 and a fitting part 2b of the fixed sector 2 positioned inward in the direction of a radius of the rotative operation section 3, and the fitting part of the non-rotative section 6 is fitted to the fitting part 2b of the fixed section 2 through the void space of a connective section 4b locating inward in the direction of radius of the rotative operation section 3.