[특허]Permanent magnet motor

Permanent magnet motor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02K-021/12
출원번호	US-0249026 (1994-05-25)
우선권정보	JP-0124129 (1993-05-26); JP-0124130 (1993-05-26); JP-0124134 (1993-05-26)
발명자 / 주소	Tanimoto Shigeya (Aichi JPX) So Mayumi (Kakamigahara JPX)
출원인 / 주소	Kabushiki Kaisha Toshiba (Kanagawa JPX 03)
인용정보	피인용 횟수 : 57 인용 특허 : 0

초록 ▼

In a permanent magnet motor, a stator includes an annular stator core and a plurality of stator windings wound on the stator core so that a plurality of phases are composed. A rotor is rotatably mounted with a predetermined air gap between it and an inner peripheral face of the stator core. The rotor includes a rotor core having a plurality of slots and a plurality of permanent magnets embedded in the slots respectively. Each permanent magnet having a generally arc-shaped cross section is embedded in the slot so that its convex portion is directed toward a rotor axis. Each permanent magnet is magnetized so that directions of easy magnetization are concentrated on a point C at a side of center of curvature thereof. The relation between a distance L between the point C and a center line passing the center of each permanent magnet in the direction of the thickness thereof and a mean radius of curvature R of the permanent magnets is shown by the expression, 1.0×R≤L≤7.5×R.

대표청구항 ▼

A permanent magnet motor comprising: a) a stator including an annular stator core and a plurality of stator windings wound on the stator core so that a plurality of phases are composed; and b) a rotor rotatably mounted with a predetermined air gap between the same and an inner peripheral face of the stator core, the rotor including a rotor core having a plurality of slots and a plurality of permanent magnets embedded in the slots respectively, the rotor being rotated when the stator windings are sequentially energized; wherein each permanent magnet has a generally arc-shaped cross section and is embedded in the slot so that a convex portion thereof is directed toward a rotor axis; each permanent magnet is magnetized so that directions of easy magnetization thereof are concentrated on a point C at a side of center of curvature thereof; the relation between a distance L between the point C and a center line passing the center of each permanent magnet in the direction of the thickness thereof and a mean radius of curvature R of the permanent magnets is shown by the following expression: 1.8×R≤L≤5×R.

이 특허를 인용한 특허 (57)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Permanent magnet motor 원문보기

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Permanent magnet motor 원문보기

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이 특허를 인용한 특허 (57)

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