ROTOR FITTING STRUCTURE

PURPOSE:To absorb thermal expansion deformation and to facilitate attaching and detaching a rotor by mounting a rotor of a motor or the like on a tubular member, detachably fitting same on a shaft member, and clamping the tubular memory by a ring member fixed to the shaft member and a wedge member. CONSTITUTION:At the time of fitting a rotor 2 to a spindle 21 as a shaft member, the rotor 2 is fitted and fixed to the outside of a sleeve 3 which is a tubular member slidably fitted to the spindle 1. A ring member 4 having an end surface opposite to the sleeve 3 formed on a coupling is fitted to the spindle 1, and a screw member 5 having a thread groove formed on the outer peripheral surface is fitted to the opposite side of the ring member 4. A wedge member 6 screw engaged with the outer peripherals surface of the screw member 5 is screw-advanced so that the sleeve 3 is pressed to the ring member 4 through a bearing body 7 interposed between the opposite taper end surfaces 3a, 6a of the sleeve 3 and the wedge member 6.