公开(公告)号：US20080224559A1

公开(公告)日：2008-09-18

申请号：US12045240

申请日：2008-03-10

Applicant: Noboru NIGUCHI

Inventor： Noboru NIGUCHI

IPC: H02K21/00

CPC classification number: H02K1/2733 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/06

Abstract: A permanent magnet included in a rotor of a brush-less motor is a radial anisotropic magnet in which multi-poles are magnetized in the circumferential direction and is skew magnetized along the axial direction in such a manner that a surface to one end part of an upper side from a central part in the axial direction and a surface to an end part of a lower side from the central part are axially shifted by a predetermined angle in the circumferential direction from each other. In accordance with this skew-magnetization, coggings including irregularly varying components generated in the rotor owing to the three-dimensional shapes of coil ends provided at opposite ends of a tooth 611a for fixing a winding have opposite phases to each other, so that the coggings are cancelled with each other. Accordingly, the coggings can be reduced or cancelled.

Abstract translation: 包括在无刷电动机的转子中的永磁体是径向各向异性磁体，其中多极在圆周方向上被磁化，并且沿着轴向以歪斜的方式磁化，使得至少一个 在轴向方向上的中心部分的上侧和从中心部分的下侧的表面到端部部分在圆周方向上轴向偏移预定的角度。 根据该偏斜磁化，由于设置在用于固定绕组的齿611a的相对端处的线圈端部的三维形状，包括在转子中产生的不规则变化的部件的梳理物具有彼此相反的相位， coggings被取消了对方。 因此，可以减少或取消制图。

公开(公告)号：US20090033174A1

公开(公告)日：2009-02-05

申请号：US12174851

申请日：2008-07-17

Applicant: Noboru NIGUCHI ,  Masaru HORIKAWA

Inventor： Noboru NIGUCHI ,  Masaru HORIKAWA

IPC: H02K1/17 ,  H02K1/27

CPC classification number: H02K1/278 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/06

Abstract: A brushless motor includes a stator and a rotor. The stator includes an annular stator core having teeth arranged with a spacing in a circumferential direction of the annular stator core; and coils wound around the teeth respectively. The rotor includes a rotor core and magnetic poles of segment magnets arranged annularly along a circumferential direction of the rotor core. The segment magnets are stacked at a plurality of stages in an axial direction of the rotor core. A length direction of each of the segment magnets is parallel with the axial direction of the rotor core. The following expression is satisfied: (2×β/P)+θ

Abstract translation: 无刷电动机包括定子和转子。 所述定子包括环形定子芯，所述环形定子芯具有沿所述环形定子芯的圆周方向间隔布置的齿; 和缠绕在牙齿上的线圈。 转子包括转子芯和沿着转子芯的圆周方向环状布置的段磁体的磁极。 分段磁体在转子铁心的轴向上以多个级堆叠。 每个分段磁体的长度方向与转子芯的轴向平行。 满足以下表达式：<？in-line-formula description =“In-line formula”end =“lead”？>（2xbeta / P）+θ<（360 / P）<？in-line-formula description = “在线公式”end =“tail”？>其中P是各级段磁体的磁极数，β（电角度）是转子芯的外周表面上的有效极角孔径 ，θ是相邻阶段的段磁体的相应磁极之间的相移角的倾斜角。

公开(公告)号：US20070289807A1

公开(公告)日：2007-12-20

申请号：US11753744

申请日：2007-05-25

Applicant: Naotake KANDA ,  Noboru NIGUCHI

Inventor： Naotake KANDA ,  Noboru NIGUCHI

IPC: B62D5/04

CPC classification number: B62D5/0403 ,  F16C19/06 ,  F16C35/073 ,  H02K5/1732

Abstract: To provide a motor in which a rattle is hardly caused even if a bearing and a shaft are made of different materials, a motor includes a cylindrical motor case having a bottom, in a bracket which supports a press-fitted output shaft side bearing and closes an opening of the motor case. The motor further includes a ring member that is press-fitted to the bracket and is brought into abutment with the output shaft side bearing. The bracket and the ring member are made of the same material.

Abstract translation: 为了提供即使轴承和轴由不同材料制成也不会引起拨浪鼓的电动机，电动机包括具有底部的圆柱形电动机壳体，该支架支撑压配输出轴侧轴承并关闭 电动机壳的开口。 电动机还包括压配合到支架并与输出轴侧轴承邻接的环件。 托架和环件由相同的材料制成。

公开(公告)号：US20080218023A1

公开(公告)日：2008-09-11

申请号：US12041343

申请日：2008-03-03

Applicant: Noboru NIGUCHI ,  Hirohide INAYAMA

Inventor： Noboru NIGUCHI ,  Hirohide INAYAMA

IPC: H02K21/12

CPC classification number: H02K1/278 ,  H02K29/03 ,  H02K2201/06

Abstract: In a three-phase brushless motor, a rotor has a stacked structure including first to third stages which include segment magnets to which a skew process is applied. When the number of poles P in the circumferential direction is set to P, an angle of skew is set to Δ=360/(6P/2) [deg]. That is, the magnet segments are respectively arranged so that the magnet segment of the second stage is shifted by a rotating angle of Δ/3 in the circumferential direction from the magnet segment of the first stage and the magnet segment of the third stage is shifted by a rotating angle of 2Δ/3 in the circumferential direction.

Abstract translation: 在三相无刷电动机中，转子具有包括第一至第三级的堆叠结构，其包括施加有歪斜处理的段磁体。 当圆周方向的极数P设定为P时，歪斜角度设定为Δ= 360 /（6P / 2）°。 也就是说，磁体段被分别布置成使得第二级的磁体段从第一级的磁体段沿圆周方向偏移Delta / 3的旋转角度，并且第三级的磁体段被移位 在圆周方向上的旋转角度为2Delta / 3。

公开(公告)号：US20070273241A1

公开(公告)日：2007-11-29

申请号：US11753818

申请日：2007-05-25

Applicant: Noboru NIGUCHI ,  Naotake KANDA

Inventor： Noboru NIGUCHI ,  Naotake KANDA

IPC: H02K21/12 ,  H02K1/00 ,  H02K1/28

CPC classification number: H02K21/16 ,  H02K1/148 ,  H02K1/278

Abstract: A brushless motor including a rotor which has ten permanent magnets each containing rare earth neodymium and provided around a rotor yoke and an outside diameter of 45 mm to 55 mm, and a stator which has a stator core having twelve slots and an outside diameter of 75 mm to 85 mm and whose magnetomotive force at maximum current is 700 AT or more. The stator core is configured such that a teeth width b is 0.14 times or more of the outside diameter of the rotor.

Abstract translation: 一种无刷电动机，其具有转子，该转子具有十个永磁体，每个永磁体含有稀土钕，并设置在转子磁轭周围，外径为45mm〜55mm，定子具有十二个槽，外径为75mm mm至85mm，其最大电流下的磁动势为700AT以上。 定子铁心构成为齿宽b为转子外径的0.14倍以上。