Rotor, rotor balancer, and rotating electric machine using a rotor

JP7874959B2Active Publication Date: 2026-06-17TOSHIBA IND PROD & SERVICES CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TOSHIBA IND PROD & SERVICES CORP
Filing Date
2021-12-17
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Conventional methods for adjusting the rotational balance of rotors in motors or generators require repetitive measurements and cutting of end plate members, leading to increased man-hours and difficulty in fine balance adjustments due to the risk of excessive cutting and the need for strong crimping, which can damage permanent magnets.

Method used

A rotor design featuring an annular balancer with protrusions that are integrally formed with the balancer body, allowing for easy adjustment by selectively removing portions to achieve balance, with markings for precise mass reduction.

Benefits of technology

Facilitates easier and more precise balance adjustments, reduces the need for crimping, and minimizes damage to permanent magnets, while enabling uniform balance results and improved manufacturability.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a rotor that is easy to adjust the rotational balance.SOLUTION: The rotor includes a rotor core and a balancer provided axially apart from at least one of both end faces of the rotor core in the axial direction. The balancer has a balancer body formed in a circular shape and a plurality of protrusions that is provided in regular arrangement circumferentially on the outer surface of the balancer body in the axial direction and protrudes in the axial direction. The balancer body and the plurality of protrusions are integrally formed from the same member.SELECTED DRAWING: Figure 1
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