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Patent Searching and Data


Title:
PERMANENT MAGNET SYNCHRONOUS MOTOR
Document Type and Number:
WIPO Patent Application WO/2022/113181
Kind Code:
A1
Abstract:
In the present invention, a permanent magnet (22) includes a concave portion (25) that allows a protrusion (24) provided to a rotor core (21) to be fitted therein. The concave portion satisfies L2≥L1 when L1 is defined as the minimum distance between the outermost part of the concave portion (25) and the outer diameter arc portion of the permanent magnet (22), and L2 is defined as the distance between the outer diameter arc portion of the permanent magnet (22) and the concave portion (25) of the permanent magnet (22) passing through the intersection point between a tangent line of the outermost part of the concave portion (25) of the permanent magnet (22) and a parallel line that starts from a point where the attachment surface between the permanent magnet (22) and the rotor core (21) transitions to the concave portion (25) and that is parallel to a radial line which goes from the center of a shaft (23) of a rotor (20) toward the center of the permanent magnet (22).

Inventors:
MOTOYOSHI KENTA (JP)
NISHIMURA YUKI (JP)
HIROTANI YU (JP)
Application Number:
PCT/JP2020/043729
Publication Date:
June 02, 2022
Filing Date:
November 25, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/27
Foreign References:
JP2007037322A2007-02-08
JP2020089005A2020-06-04
JP2011045156A2011-03-03
JP2015130780A2015-07-16
JP2011211819A2011-10-20
Attorney, Agent or Firm:
PALMO PATENT FIRM, P.C. (JP)
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