ROTOR OF DYNAMO-ELECTRIC MACHINE AND DYNAMO-ELECTRIC MACHINE USING THE SAME

• Main Authors: AKUTSU SATORU, OKAZAKI MASABUMI, AIDA CHUJI, TAKIZAWA YUJI
• Format: Patent
• Language: English; Japanese
• Published: 19.04.2018
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide the rotor of dynamo-electric machine capable of improving the characteristics of dynamo-electric machine, by suppressing magnetic flux leakage into a rotor core, thereby efficiently using the magnetic flux of permanent magnets, and to provide a dynamo-electric machine using the same.SOLUTION: In a rotor including multiple permanent magnets 12 arranged in a V-shape opening in an external-diameter direction and forming a magnetic pole in pair, and a rotor core 11 constituted by laminating core sheets 11A having a V-shape opening 11b housing the multiple permanent magnets 12, in the direction of the rotation axis. The core sheet 11A has an inner diameter side cavity 11d1 and an outer diameter side cavity 11d2 formed, respectively, at an inner diameter side end and an outer diameter side end of the V-shape opening 11b, and has a positioning protrusion 11e protruding into the outer diameter side cavity 11d2 and abutting on the permanent magnet 12 and a circumferential end face 11eb and an external-diameter side end face 11ec facing the outer diameter side cavity 11d2.SELECTED DRAWING: Figure 4 【課題】ロータコア内への磁束漏れを抑制して永久磁石の磁束を効率よく利用し、回転電機の特性を改善できる回転電機の回転子及びそれを用いた回転電機を得る。【解決手段】外径方向に開くＶ字状に配置され、対をなして磁極を形成する複数の永久磁石１２と、複数の永久磁石１２を収容するＶ字開口部１１ｂを備えたコアシート１１Ａを回転軸方向に積層して構成されたロータコア１１とを備えたロータであって、コアシート１１Ａは、Ｖ字開口部１１ｂの内径側端部及びＶ字開口部１１ｂの外径側端部に内径側空隙１１ｄ１及び外径側空隙１１ｄ２がそれぞれ形成され、外径側空隙１１ｄ２に突出して永久磁石１２に当接し、永久磁石に当接しない周方向端面１１ｅｂ及び外径側端面１１ｅｃが外径側空隙１１ｄ２に面する位置決め突起部１１ｅを有している。【選択図】図４