Invention Grant
- Patent Title: Core material, stator core, and motor provided with stator core
- Patent Title (中): 芯材,定子铁芯和电机配有定子铁芯
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Application No.: US13978852Application Date: 2011-12-05
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Publication No.: US09385565B2Publication Date: 2016-07-05
- Inventor: Yukihiro Okada , Minoru Chamura , Yasuji Echizen , Tooru Nakamaru , Hu Li
- Applicant: Yukihiro Okada , Minoru Chamura , Yasuji Echizen , Tooru Nakamaru , Hu Li
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Brinks Gilson & Lione
- Priority: JP2011-011655 20110124
- International Application: PCT/JP2011/006783 WO 20111205
- International Announcement: WO2012/101716 WO 20120802
- Main IPC: H02K1/14
- IPC: H02K1/14 ; H02K1/12

Abstract:
In a core material according to the present invention, a predetermined number of core pieces, each having a tooth portion and a yoke portion, are connected to each other via connecting portions. Each of the connecting portions includes: a V-shaped notch portion; a through hole that is formed at a tapered portion of the notch portion with a diameter elongated in a connection direction; and a thin portion that is formed outside of the through hole and connects the core pieces to each other. The width of the thin portion is more increased apart from the axis of symmetry of two sides constituting the V shape of the notch portion, and further, an intersection between extension lines of the two sides constituting the V shape lies within 0.3 W from the inner side of the thin portion in a notch direction and within the thin portion when W designates the width of the thin portion along the axis of symmetry.
Public/Granted literature
- US20130293058A1 CORE MATERIAL, STATOR CORE, AND MOTOR PROVIDED WITH STATOR CORE Public/Granted day:2013-11-07
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