Rotating electric machine
AssigneeMitsubishi Electric Corporation
InventorsTakashi Umeda, Hiroki Kitani, Junka Okamoto
Life of this patent
Estimating the term…
Abstract
A rotor in a rotating electric machine including a rotor main body and at least one magnet unit provided at an outer circumferential part of the rotor main body. The magnet unit has a plurality of magnet teeth as segments in the circumferential direction. The plurality of magnet teeth that form one magnet unit are arranged in a circular arc shape. At least one pair of magnet teeth in one magnet unit is each provided with a notch. With the plurality of magnet teeth being arranged in the circular arc shape, a fixation block is press-fitted in the pair of notches. The fixation block is fastened to the rotor main body while being inserted in the notches.
Claims25
A rotating electric machine comprising:
- a rotor;
- and
- a stator,
- the rotor including a rotor main body and at least one magnet unit provided at an outer circumferential part of the rotor main body,
- the at least one magnet unit having a plurality of magnet teeth as segments in a circumferential direction,
- the plurality of magnet teeth that form one of the magnet units being arranged in a circular arc shape,
- a magnet being attached to each of the plurality of magnet teeth,
- at least a pair of the magnet teeth in one of the magnet units being each provided with a notch,
- a fixation block being press-fitted in a pair of the notches, with the plurality of magnet teeth being arranged in the circular arc shape,
- the fixation block being fastened to the rotor main body, with the fixation block being inserted in the notches,
- the magnet teeth including a third type magnet tooth and a fourth type magnet tooth,
- the third type magnet tooth having a long hole at a protrusion at an end surface thereof on a first side in the circumferential direction, the long hole being completely surrounded by the third type magnet tooth,
- the fourth type magnet tooth having a shaft part at a protrusion at an end surface thereof on a second side in the circumferential direction,
- the magnet units being each formed by fitting the long hole of the third type magnet tooth and the shaft part of the fourth type magnet tooth with each other,
- the notches having stepped parts,
- the fixation block having protrusions, and
- when the plurality of magnet teeth are arranged in the circular arc shape, the protrusions of the fixation block are fitted in the stepped parts of the notches.
A rotating electric machine comprising:
- a rotor;
- and
- a stator,
- the rotor including a rotor main body and at least one magnet unit provided at an outer circumferential part of the rotor main body,
- the at least one magnet unit having a plurality of magnet teeth as segments in a circumferential direction,
- the plurality of magnet teeth that form one of the magnet units being arranged in a circular arc shape,
- a magnet being attached to each of the plurality of magnet teeth,
- at least a pair of the magnet teeth in one of the magnet units being each provided with a notch,
- a fixation block being press-fitted in a pair of the notches, with the plurality of magnet teeth being arranged in the circular arc shape,
- the fixation block being fastened to the rotor main body, with the fixation block being inserted in the notches,
- the magnet teeth each having a first hole at an end surface thereof on a first side and a second hole at an end surface thereof on the second side,
- a pin being press-fitted in the first hole of each of the magnet teeth and the second hole of an adjacent one of the magnet teeth,
- only one of the first hole and the second hole being a long hole while the other being a circular hole.
Dependencies are inferred from the claim text.