公开(公告)号：USD876338S1

公开(公告)日：2020-02-25

申请号：US29618284

申请日：2017-09-20

Applicant: FANUC CORPORATION

Designer： Masatomo Shirouzu ,  Takafumi Kajiya ,  Takuya Maeda ,  Kenichi Tsukada

公开(公告)号：US20180174744A1

公开(公告)日：2018-06-21

申请号：US15845089

申请日：2017-12-18

Applicant: FANUC CORPORATION

Inventor： Takuya Maeda

IPC: H01F30/12 ,  H01F29/02 ,  H01F29/14 ,  H01F27/04 ,  H01F27/28

CPC classification number: H01F30/12 ,  H01F27/04 ,  H01F27/28 ,  H01F29/02 ,  H01F29/14

Abstract: A multi-phase transformer includes a centrally-disposed first core, a plurality of second cores each provided outside the first core so as to constitute a loop-shaped magnetic path with respect to the first core, and a primary winding and a secondary winding wound on each of the second cores.

公开(公告)号：US20180020923A1

公开(公告)日：2018-01-25

申请号：US15699005

申请日：2017-09-08

Applicant: FANUC CORPORATION

Inventor： Takuya Maeda

IPC: A61B5/00 ,  A61B3/10 ,  A61B3/00 ,  G01B9/02

CPC classification number: A61B5/0066 ,  A61B3/0025 ,  A61B3/102 ,  A61B2562/0233 ,  A61B2576/00 ,  G01B9/02044 ,  G01B9/02084 ,  G01B9/02091 ,  H02K1/16 ,  H02K1/24 ,  H02K1/2773 ,  H02K29/03

Abstract: An electric motor including a rotor including magnetic pole units and a stator including slots facing an outer peripheral surface of the rotor. Each of the magnetic pole units is bulged to an outside in a radial direction so that a waveform of a magnetic flux density generated from the rotor is a sine wave shape, and a concave part or convex part which is small enough to prevent changing of a waveform cycle of cogging torque determined by a least common multiple of the number of slots and the number of magnetic poles of the rotor, is formed at a central part in a circumferential direction of an outer peripheral surface in each of the magnetic pole units.

公开(公告)号：US20170221628A1

公开(公告)日：2017-08-03

申请号：US15400066

申请日：2017-01-06

Applicant: FANUC CORPORATION

Inventor： Masatomo Shirouzu ,  Takuya Maeda

IPC: H01F37/00 ,  H01F27/32 ,  H02K11/33

Abstract: A three-phase reactor includes: an outer peripheral iron core; and at least three iron-core coils that come in contact with an inner surface of the outer peripheral iron core or are joined to the inner surface. The at least three iron-core coils include corresponding iron cores and corresponding coils wound around the iron cores, and gaps that can magnetically connect one iron-core coil of the at least three iron-core coils and an iron-core coil adjacent to the one iron-core coil to each other are formed between the one iron-core coil of the at least three iron-core coils and the iron-core coil adjacent to the one iron-core coil.

公开(公告)号：US08901785B2

公开(公告)日：2014-12-02

申请号：US13738041

申请日：2013-01-10

Applicant: FANUC Corporation

Inventor： Akira Nishifukumoto ,  Takuya Maeda ,  Yoshifumi Shimura

IPC: H02K41/03 ,  H02K1/06 ,  H02K21/16 ,  H02K35/04 ,  H02K3/12

CPC classification number: H02K35/04 ,  H02K3/12 ,  H02K21/16 ,  H02K41/031 ,  H02K2213/03

Abstract: An electric motor includes a rotor including an iron core and a plurality of windings, and a stator including a plurality of permanent magnets forming a plurality of poles. The iron core has a plurality of primary teeth around each of which a winding is wound and a plurality of secondary teeth around each of which no winding is wound. The primary teeth and the secondary teeth are formed alternately with each other. The electric motor is configured such that a ratio between the number of poles formed by the permanent magnets of the stator and the number of phases formed by the windings of the rotor is 4m:3n (m and n are any natural numbers, excluding the case where m:n=2:3 is satisfied).

Abstract translation: 电动机包括具有铁芯和多个绕组的转子，以及包括形成多个极的多个永久磁铁的定子。 铁芯具有绕组绕组的多个主齿，绕组周围的多个次级齿不缠绕。 主齿和次齿彼此交替地形成。 电动机被构造成使得由定子的永磁体形成的极数与由转子的绕组形成的相数之间的比率为4m：3n（m和n是任何自然数，除了该情况 其中m：n = 2：3）。