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公开(公告)号：US20240266895A1
公开(公告)日：2024-08-08
申请号：US18638252
申请日：2024-04-17
Applicant: DENSO CORPORATION
Inventor： Yuji Hayashi , Toshio Yamamoto
Abstract: A coil assembly includes a band member and a plurality of coils. The band member is rolled along a circumferential direction into an annular shape and has a plurality of layers in a radial direction. The coils have vertical portions, and are located at predetermined positions in the circumferential direction and the radial direction on the band member and connected in a predetermined connection pattern. Moreover, the coil assembly further includes vertical-portion laminates constituted of the vertical portions of the coils which are radially laminated in a cross section of the band member and the coils taken along the radial direction. Each of the vertical-portion laminates is configured so that each radially-adjacent pair of the vertical portions constituting the vertical-portion laminate have different electric potentials when the coils are energized.
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公开(公告)号：US11139724B2
公开(公告)日：2021-10-05
申请号：US16370517
申请日：2019-03-29
Applicant: Denso Corporation
Inventor： Tetsuaki Ichikawa , Toshio Yamamoto , Masayuki Kuwano
Abstract: A brushed motor includes a rotation shaft, a commutator including a plurality of segments separated by a plurality of undercuts arranged at unequal intervals, an armature, a plurality of permanent magnets, a voltage equalizing line, a positive electrode brush, and a negative electrode brush. When Pz is the number of the permanent magnets and N is the number of the segments, a relationship of N=Pz(K−0.5) is satisfied. Pz is an even number that is greater than or equal to four. K is a constant and is a natural number that is greater than or equal to two. The plurality of undercuts includes at least one set of undercuts arranged at an undercut interval that differs from a reference angle θz. The reference angle θz is specified by a relational expression of θz=(360 degrees/Pz)±(360 degrees/2N).
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公开(公告)号：US20240120794A1
公开(公告)日：2024-04-11
申请号：US18539674
申请日：2023-12-14
Applicant: DENSO CORPORATION
Inventor： Yusuke TATEISHI , Toshio Yamamoto , Yuji Hayashi
CPC classification number: H02K3/28 , H02K1/278 , H02K3/02 , H02K3/34 , H02K2213/03
Abstract: A motor includes a stator having a stator core. The stator includes a coil connection body of one phase having a plurality of coils connected with each other; at least one of the coils has an electrical resistance set to be different from an electrical resistance of another of the coils. The stator also includes a coil connection body of another phase having a plurality of coils connected with each other; at least one of the coils has an electrical resistance set to be different from an electrical resistance of another of the coils. Moreover, the coil connection body of the another phase has a combined resistance set to be equal to a combined resistance of the coil connection body of the one phase.
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公开(公告)号：US20190229593A1
公开(公告)日：2019-07-25
申请号：US16370517
申请日：2019-03-29
Applicant: Denso Corporation
Inventor： Tetsuaki Ichikawa , Toshio Yamamoto , Masayuki Kuwano
Abstract: A brushed motor includes a rotation shaft, a commutator including a plurality of segments separated by a plurality of undercuts arranged at unequal intervals, an armature, a plurality of permanent magnets, a voltage equalizing line, a positive electrode brush, and a negative electrode brush. When Pz is the number of the permanent magnets and N is the number of the segments, a relationship of N=Pz(K−0.5) is satisfied. Pz is an even number that is greater than or equal to four. K is a constant and is a natural number that is greater than or equal to two. The plurality of undercuts includes at least one set of undercuts arranged at an undercut interval that differs from a reference angle θz. The reference angle θz is specified by a relational expression of θz=(360 degrees/Pz)±(360 degrees/2N).
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