US 2019/0356184 A1 · ROTOR

Abstract

Provided is a rotor that is long in the axial direction of the rotary shaft without increasing the ratio L/D between the length L and the inner diameter D of the permanent magnet. The permanent magnet of the rotor includes a plurality of sub-magnets that are divided in the axial direction A of the rotary shaft. The armor ring includes a plurality of sub-rings that are divided in the axial direction A. The connector is disposed on the inner periphery of a connecting part between the two sub-rings and that are adjacent in the axial direction A and is disposed between the two sub-magnets that are adjacent in the axial direction A. The sub-magnets each have a recess that is depressed in the axial direction A. The connector has protrusions that fit to the recesses of the magnet.

Claims2

Dependent claims

A rotor comprising:

a rotary shaft;
a permanent magnet disposed around the rotary shaft;
and an armor ring disposed around the permanent magnet;
the permanent magnet includes a plurality of sub-magnets in the axial direction of the rotary shaft,
the armor ring includes a plurality of sub-rings in the axial direction,
the rotor further includes a connector disposed on the inner periphery of a connecting part between the two adjacent sub-rings along the axial direction and disposed between the two adjacent sub-magnets along the axial direction, and
each sub-magnet has a protrusion that protrudes in the axial direction or a recess that is depressed in the axial direction and the connector has a recess that fits to the protrusion of the sub-magnet or a protrusion that fits to the recess of the sub-magnet.

4 more elements

Dependencies are inferred from the claim text.

Rotor

Life of this patent

Rotor

Life of this patent

Abstract

Claims2