Patent attributes
A rotating electrical machine is equipped with a rotor and a stator. The rotor includes a magnet unit and a rotor core retaining the magnet unit. The rotor core is made of a stack of annular core plates and an annular end plate mounted on an end of the stack of the core plates. The end plate has a deformable wave shape. The stack of the core plates and the end plate has formed therein through-holes extending through a length thereof. Bar-shaped fastening members, such as rivets, which have flanges on ends thereof are inserted into the through-holes with the flanges pressing the end plate to elastically deform the wave shape of the end plate, thereby tightly gripping the stack of the core plates in the lengthwise direction. This minimizes concentration of stress on the core plates to eliminate a risk of damage or breakage of the rotor.
