公开(公告)号：US20190173365A1

公开(公告)日：2019-06-06

申请号：US16180510

申请日：2018-11-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Shimpei FUJIWARA ,  Masashi KAWAl ,  Hiroaki TAKEDA

IPC: H02K15/12 ,  H02K3/34 ,  H02K15/10 ,  B29C35/02 ,  B29C41/20

Abstract: A manufacturing method for an electric motor stator includes an injecting step in which thermosetting resin is injected into a forming die, a dipping step in which a coil end portion is dipped into the thermosetting resin injected into the forming die, a heating step in which the thermosetting resin inside the forming die is heated so as to form a molded portion, and a mold release step in which the molded portion is released from the forming die when at least either shear force of the thermosetting resin or adhesive strength between the coil end portion and the thermosetting resin becomes greater than previously-determined mold release force.

公开(公告)号：US20210178456A1

公开(公告)日：2021-06-17

申请号：US17117162

申请日：2020-12-10

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  AISIN AW CO., LTD.

Inventor： Takeshi KUROSAWA ,  Kazuhiko FUKUDA ,  Hiroaki TAKEDA ,  Ryosuke MARUYAMA ,  Toshiro NAKAMURA ,  Tadashi FUJIYOSHI ,  Daisuke MIZUSHIMA ,  Hideki MUKAIZAKA

IPC: B21F23/00

Abstract: A conveyer equipped with rotating discs rotatable around axes thereof relative to a mounting base. Each of the rotating discs has grooves in which rectangular wires are receivable. When an upstream and a downstream one of the rotating disc are arranged in a given angular relation to each other, one of the grooves of the upstream rotating disc is aligned with that of the downstream rotating disc to pass the rectangular wire from the upstream rotating disc to the downstream rotating disc. Upon such passing of the rectangular wire, the grooves of the upstream and downstream rotating discs hold or clamp all side surfaces of the rectangular wire, thereby ensuring the stability in retaining the rectangular wire when passed from one to another of the rotating discs, which enables the conveyer to carry the rectangular wires at high speeds.

公开(公告)号：US20210057971A1

公开(公告)日：2021-02-25

申请号：US16998150

申请日：2020-08-20

Applicant: DENSO CORPORATION

Inventor： Hiroaki TAKEDA ,  Toshihiro TAKEI

IPC: H02K15/085 ,  H02K15/02 ,  H02K15/10

Abstract: A method of manufacturing a stator includes steps of: inserting a stator coil into slots of a stator core so as to have parts of the stator coil protruding from an axial end face of the stator core; and bending the protruding parts of the stator coil in a circumferential direction. Moreover, in the bending step: a bending jig with a press surface is arranged on the axial end face of the stator core to cover at least part of a corresponding tooth of the stator core; and at least one of the protruding parts is pressed against the press surface of the bending jig, thereby being bent in the circumferential direction. Furthermore, a circumferential width of the press surface is larger than a circumferential width of a facing part of the corresponding tooth; the facing part faces the at least one of the protruding parts in the circumferential direction.

公开(公告)号：US20200336054A1

公开(公告)日：2020-10-22

申请号：US16842312

申请日：2020-04-07

Applicant: DENSO CORPORATION

Inventor： Hiroaki TAKEDA ,  Hiroki FUJITA

IPC: H02K15/085 ,  H02K15/04 ,  H02K15/06 ,  H02K15/02 ,  H02K1/16

Abstract: An aligning apparatus, which is provided for aligning coil segments to form an aligned coil, includes a cylindrical jig and a hook jig. The cylindrical jig has an outer cylinder to surround a radially outer periphery of the aligned coil and an inner cylinder to be surrounded by a radially inner periphery of the aligned coil. The hook jig has hooks arranged in a radial fashion and is rotatable relative to the cylindrical jig in a radial direction. The cylindrical jig further has an inner entrance provided in the inner cylinder, an outer entrance provided in the outer cylinder, and at least one of an inner guide wall extending from a front opening edge of the inner entrance radially inward and backward in the rotational direction and an outer guide wall extending from a front opening edge of the outer entrance radially outward and backward in the rotational direction.

公开(公告)号：US20190157949A1

公开(公告)日：2019-05-23

申请号：US16192116

申请日：2018-11-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Masashi KAWAI ,  Yasushi NISHIKUMA ,  Hiroaki TAKEDA

IPC: H02K15/00 ,  H02K15/10 ,  H02K5/08

Abstract: To effectively cover a coil end with a resin layer. A method for manufacturing a stator includes a first resin layer forming step (ii) of forming a first thermoset resin layer by impregnating the tip end side of a coil end with first thermoset resin, the coil end protruding from the core of the stator, the first thermoset resin having liquidity; a second resin layer forming step (iii) of forming a second thermoset resin layer on the first thermoset resin layer by dropping second thermoset resin from the core side of the coil end toward the tip end side; and a curing step of curing the first thermoset resin and the second thermoset resin.

公开(公告)号：US20140042836A1

公开(公告)日：2014-02-13

申请号：US13934920

申请日：2013-07-03

Applicant: DENSO CORPORATION

Inventor： Toshimitsu SHIGA ,  Hiroaki TAKEDA

IPC: H02K3/30

CPC classification number: H02K3/30 ,  H02K3/345

Abstract: The stator of a vehicle-use electric rotating machine includes a stator core having slots formed along a circumferential direction thereof, segment conductors having a rectangular cross section and wound on the stator core such that each of the slots accommodates at least two of the segment conductors to form a stator winding, a sheet-like electric insulating member disposed in each of the slots so as to surround the segment conductors accommodated in the slot, the electric insulating member being formed with a plurality of projections projecting toward a wall surface of the slot, and a resin filled in each of the slots so as to impregnate into the electric insulating member.

Abstract translation: 车用旋转电机的定子包括具有沿其圆周方向形成的槽的定子铁芯，分段导体具有矩形横截面并缠绕在定子铁芯上，使得每个槽容纳至少两个分段导体 形成定子绕组，设置在每个槽中的片状电绝缘构件，以便围绕容纳在槽中的段导体，电绝缘构件形成有多个突起朝向槽的壁表面突出 和填充在每个槽中的树脂，以便浸渍到电绝缘构件中。