公开(公告)号：US20130202464A1

公开(公告)日：2013-08-08

申请号：US13751374

申请日：2013-01-28

Applicant: JTEKT CORPORATION

Inventor： Junichi MIYAKI ,  Katsutoshi NISIZAKI ,  Yoshihiro OONO ,  Naotake KANDA

IPC: F04C11/00

CPC classification number: F04C11/008 ,  F01C21/10 ,  F04C2/102 ,  F04C15/008 ,  F04C2240/40 ,  F04C2240/805

Abstract: A stator is fixedly fastened at its outer periphery by a cylindrical and thin metal collar. One end of the collar is engaged with a pump housing. Multiple metal nuts are embedded in insulators fitted to stator cores through insert molding. The stator of a brushless motor is fixed by screwing bolts passed through the pump housing from a pump plate, to nuts embedded in the insulators.

Abstract translation: 定子通过圆柱形和薄金属环固定在其外周。 衣领的一端与泵壳接合。 多个金属螺母嵌入到通过嵌件成型安装在定子芯上的绝缘体中。 无刷电动机的定子通过螺旋穿过泵壳体的螺栓从泵板固定到嵌入在绝缘体中的螺母。

公开(公告)号：US20180309351A1

公开(公告)日：2018-10-25

申请号：US15951513

申请日：2018-04-12

Applicant: JTEKT CORPORATION

Inventor： Koji TACHI ,  Hiroshi YOSHIKAWA ,  Naotake KANDA ,  Taiki TAKEUCHI ,  Shohei OGI

IPC: H02K15/03 ,  H02K15/12 ,  H02K1/27

Abstract: An injection molding device includes: a lower die that supports a rotor core; an intermediate die including a magnetizing mechanism; and an upper die including an injection die having a gate formed therein through which a molten bonded-magnet material supplied from a supply source is injected into a magnet insertion hole in the rotor core. The injection die has a cylindrical protruding portion at an end surface of which the gate is open. In the protruding portion, a magnetic-flux applying member containing ferromagnetic material is embedded with its side surface exposed at an outer peripheral surface of the protruding portion. The magnetizing mechanism is formed in an annular shape that can accommodate, inside its inner periphery, the rotor core and a distal end portion of the protruding portion by disposing yokes and permanent magnets alternately in the circumferential direction. Magnetic-path surfaces of the yokes radially face the side surface.

公开(公告)号：US20130136633A1

公开(公告)日：2013-05-30

申请号：US13679398

申请日：2012-11-16

Applicant: JTEKT CORPORATION

Inventor： Naotake KANDA ,  Yoshihiro OONO

IPC: F04D13/06

CPC classification number: F04D13/06 ,  F04C2240/805 ,  H02K1/185 ,  H02K5/15 ,  H02K5/1732 ,  H02K7/1166 ,  H02K7/14 ,  H02K15/16

Abstract: A pump housing, a fixing member and a holding member are assembled in the axis direction of an oil pump to fix a stator and a rotor of a brushless motor. The holding member is made of metal material and has a cylindrical shape that extends from its bottom portion toward one side in the axial direction. The fixing member is a cylindrical metal member. Stepped portions, extending in the circumferential direction, are formed in the outer periphery of the holding member and the inner periphery of the fixing member, and contact each other. The outer periphery of the holding member engages with the inner periphery of the fixing member. The outer periphery of the other end portion of the fixing member is fitted to the inner periphery of a flange portion projecting from the end face of the pump housing, which is adjacent to the brushless motor.

Abstract translation: 在油泵的轴线方向上组装泵壳体，固定部件和保持部件，以固定无刷电动机的定子和转子。 保持构件由金属材料制成，并且具有从其底部向轴向一侧延伸的圆筒形状。 固定构件是圆柱形金属构件。 在保持部件的外周和固定部件的内周面上形成有沿圆周方向延伸的台阶部，并且彼此接触。 保持构件的外周与固定构件的内周接合。 固定部件的另一端部的外周嵌合在与无刷电动机相邻的泵壳体的端面突出的凸缘部的内周。

公开(公告)号：US20170187255A1

公开(公告)日：2017-06-29

申请号：US15380232

申请日：2016-12-15

Applicant: JTEKT CORPORATION

Inventor： Naotake KANDA ,  Hiroshi YOSHIKAWA ,  Taiki TAKEUCHI ,  Yoshiyuki SHIBATA

IPC: H02K1/27 ,  H02K1/02

CPC classification number: H02K1/272 ,  H02K1/02 ,  H02K1/2766 ,  H02K15/03

Abstract: An object is to provide an interior permanent magnet rotor unit that allows possible demagnetization to be suppressed regardless of a material for a portion of a permanent magnet, which is positioned on an outward side in a radial direction of a core. A core is a laminate of first thin-plate-like members and second thin-plate-like members. The first thin-plate-like members and the second thin-plate-like members have first insertion slots and second insertion slots each of which is filled with a permanent magnet. In the first thin-plate-like members, a separating portion is formed at an end of each of the first insertion slots or the second insertion slots, which end is located on an outward side of the insertion slot in a radial direction, to form a slit in the corresponding permanent magnet.

公开(公告)号：US20170070111A1

公开(公告)日：2017-03-09

申请号：US15247327

申请日：2016-08-25

Applicant: JTEKT CORPORATION

Inventor： Naotake KANDA ,  Yoshiyuki SHIBATA ,  Yoshihiro OONO

IPC: H02K1/27 ,  H02K15/03

CPC classification number: H02K1/2713 ,  H02K1/2766 ,  H02K15/03 ,  H02K29/03 ,  H02K2201/03

Abstract: An interior permanent magnet rotor restrains demagnetization of permanent magnets embedded in a core. Each permanent magnet is formed by joining a first portion and a second portion at a connection. The first and second portions extend from the outer side toward the inner side in the radial direction of the core. The outer end faces of the first and second portions in the radial direction of the core extend in an orientation direction as viewed in section perpendicular to the axial direction. The outside diameter of the core gradually increases from the boundaries between a single magnetic pole and magnetic poles adjoining the single magnetic pole toward the middle of the single magnetic pole in the circumferential direction of the core.

Abstract translation: 内部永磁转子限制嵌入在芯体中的永磁体的退磁。 每个永磁体通过在连接处接合第一部分和第二部分而形成。 第一部分和第二部分在芯部的径向方向上从外侧向内侧延伸。 芯体径向的第一和第二部分的外端面沿垂直于轴向方向的截面方向沿取向方向延伸。 核心的外径从单个磁极和与单个磁极相邻的磁极之间的边界朝向芯的圆周方向上的单个磁极的中间的边界逐渐增加。

公开(公告)号：US20150206642A1

公开(公告)日：2015-07-23

申请号：US14596752

申请日：2015-01-14

Applicant: JTEKT CORPORATION

Inventor： Keita NIMURA ,  Naotake KANDA ,  Ryosuke YAMAGUCHI

IPC: H01F13/00

CPC classification number: H01F13/003 ,  H02K15/03 ,  Y10T29/49012 ,  Y10T29/53143

Abstract: A manufacturing device for a rotor core includes: a magnetization device that magnetizes magnet raw materials before being magnetized disposed in magnet insertion holes of the rotor core to turn the magnet raw materials before being magnetized into permanent magnets; and a detachment device that detaches the rotor core from the magnetization device. The detachment device also functions as a mounting device that mounts a jig around the rotor core when the rotor core is detached from the magnetization device.

Abstract translation: 一种用于转子芯的制造装置包括：磁化装置，其在被​​磁化之前将磁体原料磁化，设置在转子芯的磁体插入孔中，以在被磁化成永磁体之前转动磁体原料; 以及将转子芯从磁化装置分离的分离装置。 分离装置还用作当转子芯从磁化装置分离时将夹具安装在转子芯周围的安装装置。

公开(公告)号：US20170279340A1

公开(公告)日：2017-09-28

申请号：US15460854

申请日：2017-03-16

Applicant: JTEKT CORPORATION

Inventor： Taiki TAKEUCHI ,  Hiroshi YOSHIKAWA ,  Naotake KANDA ,  Yoshiyuki SHIBATA ,  Koji TACHI

IPC: H02K15/03 ,  H01F13/00 ,  H02K1/27

CPC classification number: H02K15/03 ,  H01F13/003 ,  H02K1/272 ,  H02K1/276

Abstract: An orientation magnetization device includes plural orientation magnetization yokes and plural orientation magnetization magnets, and molds field magnets while a rotor core is disposed in a magnetic circuit that is formed by assembling the orientation magnetization yokes and the orientation magnetization magnets into an annular shape. When the rotor core is disposed in the magnetic circuit, protruding portions are disposed at portions of the respective orientation magnetization yokes facing the rotor core. Auxiliary magnets are disposed in gaps between the respective orientation magnetization magnets and the rotor core, on opposite sides of each protruding portion in a circumferential direction of the orientation magnetization device. Each protruding portion and each auxiliary magnet extend in an axial direction of the orientation magnetization device, and are skewed with respect to the axial direction of the orientation magnetization device.

公开(公告)号：US20170244293A1

公开(公告)日：2017-08-24

申请号：US15430832

申请日：2017-02-13

Applicant: JTEKT CORPORATION

Inventor： Naotake KANDA ,  Hiroshi YOSHIKAWA ,  Taiki TAKEUCHI ,  Yoshiyuki SHIBATA

IPC: H02K1/27 ,  H02K1/02

CPC classification number: H02K1/2793 ,  H02K1/02 ,  H02K21/24

Abstract: A rotor includes a core and permanent magnets. Each permanent magnet is embedded in the core. Each permanent magnet forming one of the magnetic poles of the rotor includes a first portion and a second portion. The first and second portions and extend inward in a radial direction Dr and also extend away from a stator-facing surface of the rotor 10 in an axial direction Da. Regions of the first and second portions and away from the stator-facing surface are connected to a bottom. An inner peripheral surface of the first portion, an inner peripheral surface of the second portion, and an inner peripheral surface of the bottom form one of the magnetic poles of the rotor.

公开(公告)号：US20160111945A1

公开(公告)日：2016-04-21

申请号：US14877193

申请日：2015-10-07

Applicant: JTEKT CORPORATION

Inventor： Ryosuke YAMAGUCHI ,  Yoshihiro OONO ,  Naotake KANDA ,  Yoshiyuki SHIBATA

IPC: H02K15/03 ,  H01F13/00

CPC classification number: H02K15/03 ,  H01F13/003 ,  H02K1/2773

Abstract: A radial magnetizing part including permanent magnets is disposed so as to face a rotor unit in a radial direction of the rotor unit. Axial magnetizing parts are disposed on both end faces in an axial direction of the rotor unit. The axial magnetizing parts include low magnetic permeability portions and high magnetic permeability portions. The low magnetic permeability portions are disposed so as to face magnet materials. Magnetic flux from the N pole of the permanent magnet of the radial magnetizing part enters a core in the radial direction, crosses the magnet material, and returns to the S pole of the permanent magnet. The magnetic flux from the N pole of the permanent magnet of the radial magnetizing part also enters the core through the high magnetic permeability portions of the axial magnetizing parts, crosses the magnet material, and returns to the S pole of the permanent magnet.

Abstract translation: 包括永磁体的径向磁化部件被设置为在转子单元的径向方向上面对转子单元。 轴向磁化部设置在转子单元的轴向的两端面上。 轴向磁化部分包括低磁导率部分和高磁导率部分。 低磁导率部分设置成面对磁体材料。 来自径向磁化部分的永久磁铁的N极的磁通量沿径向进入磁芯，与磁体材料交叉，并返回到永磁体的S极。 来自径向磁化部分的永磁体的N极的磁通量也通过轴向磁化部分的高磁导率部分进入磁芯，穿过磁体材料，并返回永磁体的S极。

公开(公告)号：US20140285049A1

公开(公告)日：2014-09-25

申请号：US14219270

申请日：2014-03-19

Applicant: JTEKT CORPORATION

Inventor： Keita NIMURA ,  Naotake KANDA ,  Ryosuke YAMAGUCHI

IPC: H02K1/27

CPC classification number: H02K1/27 ,  H02K1/276 ,  H02K1/2766 ,  H02K1/28 ,  H02K15/03

Abstract: A magnet-embedded rotor includes a cylindrical rotor core that rotates together with a rotating shaft; and permanent magnets embedded in the rotor core. The rotor core includes core members, and each core member includes a tubular portion into which the rotating shaft is inserted and projecting portions formed to project in a radial direction of the tubular portion from an outer periphery of the tubular portion and arranged apart from each other in a circumferential direction of the tubular portion. The rotor core is formed by assembling the core members such that the tubular portions are arranged on one straight line and the projecting portion of the core member and the projecting portion of the other core member are adjacent to each other in a circumferential direction of the rotor core. The permanent magnet is embedded in each projecting portion of each core member.

Abstract translation: 磁体嵌入转子包括与旋转轴一起旋转的圆柱形转子芯; 以及嵌入在转子芯中的永磁体。 转子芯包括芯构件，并且每个芯构件包括管状部分，旋转轴插入其中并且突出部分形成为从管状部分的外周沿管状部分的径向方向突出并且彼此分开布置 在管状部分的圆周方向上。 转子芯通过组装芯部件而形成，使得管状部分布置在一条直线上，并且芯部件的突出部分和另一个芯部件的突出部分在转子的圆周方向上彼此相邻 核心。 永磁体嵌入每个芯构件的每个突出部分中。