Rotor structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 2017
Grant Date -
May 12, 2016
app pub date -
Aug 7, 2015
filing date -
Nov 7, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a rotor structure including a leak prevention hole formed in a rotor core to prevent leakage of magnetic flux from a permanent magnet; an outer-circumferential-side dovetail groove formed in an outer-circumferential-side inner wall of the leak prevention hole, an inner-circumferential-side dovetail groove formed, opposite the outer-circumferential-side dovetail groove, in an inner-circumferential-side inner wall of the leak prevention hole; and a non-magnetic bridge having both end portions engageable with the dovetail grooves. The non-magnetic bridge is formed with a chamfer at only one end face of both end faces in an axial direction of the rotor core. The non-magnetic bridge includes two or more non-magnetic bridges. The non-magnetic bridges are arranged so that the end faces formed with the chamfers are alternately located at the one end face of the rotor core.
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