公开(公告)号：US4873462A

公开(公告)日：1989-10-10

申请号：US245787

申请日：1988-09-16

Applicant: Timothy J. Harned

Inventor： Timothy J. Harned

IPC: H02K16/02 ,  H02K21/20 ,  H02K37/04 ,  H02K37/18

CPC classification number: H02K21/20 ,  H02K37/18 ,  H02K2201/06

Abstract: A synchronous motor having peripheral teeth on the rotor magnetized by a permanent magnet and radially inwardly projecting, electromagnetically energized stator teeth. The rotor teeth and stator teeth are skewed relative to each other. The annular arc length subtended by the skew as projected on the cylindrical peripheral envelope of the rotor teeth equals the arc length corresponding to the angular pitch of the rotor teeth divided by an integer between two and four. Each of the rotor teeth projects upon two adjacent stator teeth, and/or each of the stator teeth projects upon two adjacent rotor teeth.

Abstract translation: 一种同步电动机，其具有由永磁体磁化的转子上的周向齿，并且具有径向向内突出的电磁通电的定子齿。 转子齿和定子齿相对于彼此偏斜。 旋转齿轮的圆柱形外壳上投影的倾斜所对应的环形弧长度等于与转子齿的角距相对应的圆弧长度除以2和4之间的整数。 每个转子齿突出在两个相邻的定子齿上，和/或每个定子齿突出在两个相邻的转子齿上。

公开(公告)号：US4871934A

公开(公告)日：1989-10-03

申请号：US35622

申请日：1987-04-03

Applicant: Kiyokazu Okamoto ,  Tetsuo Endo ,  Yukio Miyamoto ,  Yoshiharu Suzuki

Inventor： Kiyokazu Okamoto ,  Tetsuo Endo ,  Yukio Miyamoto ,  Yoshiharu Suzuki

IPC: H02K1/16 ,  H02K1/26 ,  H02K17/16

CPC classification number: H02K17/16 ,  H02K1/16 ,  H02K1/26 ,  H02K2201/06

Abstract: Stator slots are skewed relative to rotor slots with a skew amount comprising an integer multiple of a stator electrical angle of 60.degree., thereby minimizing a torque ripple which is an integer multiple of six times of a primary frequency of electrical energy.

Abstract translation: 定子槽相对于转子槽倾斜，其偏移量包括定子电角度为60°的整数倍，从而最小化作为主要电能频率的六倍的整数倍的转矩脉动。

公开(公告)号：US4845837A

公开(公告)日：1989-07-11

申请号：US916005

申请日：1986-10-06

Applicant: Jerry D. Lloyd

Inventor： Jerry D. Lloyd

IPC: H01F7/02 ,  H01F41/02 ,  H02K1/17 ,  H02K1/27 ,  H02K15/03 ,  H02K21/10 ,  H02K21/46 ,  H02K23/04

CPC classification number: H02K1/276 ,  H02K1/17 ,  H02K1/2766 ,  H02K15/03 ,  H02K21/46 ,  H02K23/04 ,  H02K2201/06 ,  Y10T29/49012 ,  Y10T29/49076

Abstract: A rotor assembly for a permanent magnet motor includes a set of laminatings forming a rotor body, each lamination having a first magnet slot therein. A generally rectangular permanent magnet is disposed in the magnet slot, the magnet slot of each lamination being shaped so as to receive the rectangular permanent magnet through all the skewed laminations with a minimum air gap. A method of making an assembly such as a rotor includes the steps of providing an assembly body made of ferromagnetic material defining at least one magnet slot therein. The slot is at least partially filled with a mixture of magnetizable particles in a binder. The mixture is compressed and then cured to bond the magnetizable particles together in the slot and the bonded particles are then magnetized in the slot to form a magnet in situ in the slot without an air gap.

公开(公告)号：US4761576A

公开(公告)日：1988-08-02

申请号：US943342

申请日：1986-12-19

Applicant: Jack W. Savage

Inventor： Jack W. Savage

IPC: F04D25/06 ,  H02K1/16 ,  H02K1/26 ,  H02K29/08 ,  H02K5/24

CPC classification number: F04D25/06 ,  H02K1/16 ,  H02K1/26 ,  H02K29/08 ,  H02K2201/06

Abstract: A motor driven air moving apparatus adapted to high speed, constant duty operation has a DC permanent magnet motor with a stator and rotor, one having a wound core with an even number of identically sized, evenly spaced teeth and the other having an even number of identically sized, permanent magnet poles. One of the rotor and stator has a skew at an angle from the axial, the maximum achievable skew being less than one tooth pitch due to short axial core width. A groove is provided along the midline of each of the teeth of the core which is parallel to and shallower than the tooth separating slots and contains no winding. The groove is effective to divide the tooth magnetically in half and thus decrease the effective tooth pitch, whereby, simultaneously, the magnetically induced pulsating angular velocity of the rotor and resultant audible noise are reduced and the system efficiency of the motor and air moving apparatus combination at high speeds in constant duty operation is increased.

Abstract translation: 适用于高速，恒功率运行的电动机驱动的空气移动装置具有带有定子和转子的直流永磁电动机，一个具有偶数个相同尺寸的均匀间隔的齿的缠绕芯，另一个具有偶数个 相同尺寸的永久磁极。 转子和定子中的一个具有与轴向成一角度的偏斜，由于较短的轴向芯宽度，最大可实现的偏斜小于一个齿距。 沿着芯的每个齿的中线设置凹槽，其平行于并且比齿分离槽更浅，并且不包含绕组。 凹槽有效地将磁齿分成两半，从而降低有效齿距，从而同时减小了转子的磁感应脉动角速度和合成的可闻噪声，并且电机和空气移动装置组合的系统效率 在高负载运行时的高速度增加。

公开(公告)号：US4714852A

公开(公告)日：1987-12-22

申请号：US862358

申请日：1986-06-24

Applicant: Shigeki Kawada ,  Yoichi Amemiya ,  Masatoyo Sogabe ,  Kazushi Kumagai

Inventor： Shigeki Kawada ,  Yoichi Amemiya ,  Masatoyo Sogabe ,  Kazushi Kumagai

IPC: H02K1/27 ,  H02K21/12

CPC classification number: H02K1/278 ,  H02K2201/06

Abstract: A permanent-magnet field synchronous motor comprises a rotor body (22) having a cylindrical outer surface. A plurality of permanent magnets (25) attached to the cylindrical outer surface of the rotor body and arranged in the circumferential direction thereof form a field system. Each of the permanent magnets has an outer surface (25b) which extends circumferentially in parallel to the cylindrical outer surface of the rotor body and also has a constant thickness in the whole thereof. The inner surface and the outer surface of each of the permanent magnets has a certain configuration, respectively, each of which is composed of a plurality of straight lines and approximates to a contour line consisting of half-sine curves (S.sub.1, S.sub.2) extending between the circumferential opposite ends of each of the permanent magnets when developed in a plane surface.

Abstract translation: PCT No.PCT / JP85 / 00473 Sec。 371日期1986年6月24日第 102（e）日期1986年6月24日PCT提交1985年8月28日PCT公布。 出版物WO86 / 01651 日期：1986年3月13日。永磁场同步电动机包括具有圆柱形外表面的转子体（22）。 附接到转子体的圆筒形外表面并沿其周向布置的多个永磁体（25）形成了现场系统。 每个永磁体具有平行于转子体的圆筒形外表面周向延伸的外表面（25b），并且整体上具有恒定的厚度。 每个永磁体的内表面和外表面分别具有一定的构造，每一个由多条直线组成，并且近似于由半正弦曲线（S1，S2）组成的轮廓线， 每个永磁体在平面中展开时的周向相对端。

公开(公告)号：US4712027A

公开(公告)日：1987-12-08

申请号：US842527

申请日：1986-03-21

Applicant: John P. Karidis

Inventor： John P. Karidis

IPC: H02K1/08 ,  H02K7/08 ,  H02K41/03 ,  H02K41/00

CPC classification number: H02K41/033 ,  H02K1/08 ,  H02K7/088 ,  H02K2201/06

Abstract: Using a smooth laminated armature assembly, with a ferromagnetic double-helix stator shaft, provides an economical radial pole linear reluctance motor requiring no external armature bearings. The stator shaft has a double-helical screw tooth pattern cut into its surface. Spaces between screw threads are preferably filled with low permeability material. The armature assembly has radial pole laminar plates, separated by identically configured laminar spacers, separated by an insulating layer, which provides eddy current isolation, physical stability and original adjustment of laminations for overall accuracy to linear positioning, despite tolerances in the individual laminar plates. Each laminar plate has a number of inwardly projecting teeth centered about the internal channel. These internal teeth and the double helix screw teeth on the stator shaft provide flux paths through the stator. The armature assembly and the stator are complementary, and smoothed for sliding contact within the electromagnetically active envelope, without other bearings. Linear placement of radial pole laminar plates is achieved by dimensioning the radial pole laminar plates and/or the laminar spacers slightly less in thickness than nominal spacing requires, filling the space with epoxy, and pressing the end laminations together to nominal total length. Excess epoxy is squeezed out, leaving the laminations evenly spaced. Stator and armature may be assembled, or may be prepared with virtual teeth in homogeneous smooth surfaces. The virtual teeth are prepared by ferromagnetic modification of selected patterns through laser hardening or through chemical doping.

Abstract translation: 使用具有铁磁双螺旋定子轴的平滑层压电枢组件提供了一种不需要外部电枢轴承的经济型径向极直线磁阻电动机。 定子轴具有切割成其表面的双螺旋螺旋齿形。 螺纹之间的间隙优选填充低渗透性材料。 电枢组件具有径向极片层板，由相同配置的层状隔离物隔开，由绝缘层隔开，尽管单个层板中有公差，但它提供了涡流隔离，物理稳定性和叠片的原始调整，从而可以实现线性定位的整体精度。 每个层板具有以内部通道为中心的多个向内突出的齿。 这些内齿和定子轴上的双螺旋螺纹齿提供通过定子的磁通路径。 电枢组件和定子是互补的，并且在没有其他轴承的情况下平滑以在电磁活动外壳内滑动接触。 径向极片层板的线性放置通过将径向极片层板和/或层状间隔物的厚度尺寸设计成比标称间距要求稍小，用环氧树脂填充空间并将端部叠片压在标称总长度上来实现。 挤出过多的环氧树脂，使叠片均匀间隔开。 定子和电枢可以组装，或者可以在均匀的光滑表面中用虚拟的齿准备。 通过激光硬化或通过化学掺杂对选定图案进行铁磁修饰来制备虚拟齿。

公开(公告)号：US4398134A

公开(公告)日：1983-08-09

申请号：US147144

申请日：1980-05-06

Applicant: Rolf Muller

Inventor： Rolf Muller

IPC: H02K37/12 ,  H02K21/12 ,  H02K29/08 ,  H02K29/02

CPC classification number: H02K29/08 ,  H02K2201/06

Abstract: To reduce even instantaneous torque variations when pole gaps of a rotor pass stator pole gaps, the stator pole shoes, adjacent the tip, are shaped to provide an air gap (19) which, behind a projecting tip (FIG. 4: 61) first increases to an intermediate value (53) and then decreases to a minimum (50, 50B) over a zone (54) adjacent the pole gap (44A, 44B) which extends, preferably, over about 7.degree. to 20.degree.-el. Preferably, the opposite pole tip (51A) likewise has a projecting end (61A) with an air gap increasing to a maximum (52) and then decreasing essentially monotonically over the major portion of the pole shoe (41) to the minimum (50) close to the other pole tip (51), the maximum air gap (52) being offset about 10.degree.-20.degree.-el from the actual end of the pole tip (51A). Preferably, the pole gaps (17) on the permanent magnet rotor are narrow and skewed over an extent at least as wide as the stator pole gaps (44), for example between 20.degree. to 45.degree..

Abstract translation: 为了减小当转子的极间隙通过定子极间隙时的瞬时转矩变化，定子极靴与尖端相邻，成形为提供空气间隙（19），其在突出的尖端（图4：61）之后 增加到中间值（53），然后在靠近极间隙（44A，44B）的区域（54）上减小到最小值（50,50B），延伸最好在大约7°至20°之间。 优选地，相对的极尖（51A）同样具有突出端（61A），其空气间隙增加到最大值（52），然后在极靴（41）的主要部分上基本上单调地减小到最小（50） 靠近另一极尖（51），最大气隙（52）偏离极尖（51A）的实际端部约10°-20°。 优选地，永磁体转子上的极间隙（17）在与定子极间隙（44）至少相同的程度上变窄并且倾斜，例如在20°至45°之间。

公开(公告)号：US3987324A

公开(公告)日：1976-10-19

申请号：US471743

申请日：1974-05-20

Applicant: Clovis E. Linkous

Inventor： Clovis E. Linkous

IPC: H02K17/16 ,  H02K15/00 ,  H02K17/18

CPC classification number: B22D19/0054 ,  H02K15/0012 ,  H02K17/185 ,  H02K2201/06 ,  Y10S164/10 ,  Y10T29/49012

Abstract: Fractional horsepower induction motors having a fixed number of poles (and, accordingly, a single no load synchronous speed) that are particularly adapted for multi-speed operation when driving a fan load by changing the field strength of the main winding. Induction motors of N fundamental poles have squirrel cage rotor having a plurality of interrelated conductor bars and end rings that are arranged so that multiple sets of the rotor bars establish a predetermined number of separately identifiable cage sets such that the fundamental pole structure of the stator field is coupled with the rotor and such that the third harmonic of the stator field is not coupled with the rotor. The rotor slot number and total number of separately identifiable cage sets are selected so that a cage set pattern is provided that has two-thirds of a fundamental pole pitch. In addition, the number of rotor cage end rings at one end times the number of rotor cage end rings at the other end is greater than or equal to the number of different cage types.

Abstract translation: 具有固定极数（并且相应地，单个空载同步速度）的分数马力感应电动机，其特别适用于通过改变主绕组的场强来驱动风扇负载时的多速操作。 N个基极的感应电动机具有鼠笼式转子，其具有多个相互关联的导体条和端环，其布置成使得多组转子条构成预定数量的可单独识别的笼组，使得定子磁场的基极结构 与转子耦合，使得定子磁场的三次谐波不与转子耦合。 选择转子槽号和单独识别的笼组的总数，使得提供具有三分之二基极点的笼组图案。 此外，一端的转子笼端环的数量与另一端的转子笼端环的数量相比，大于或等于不同笼型的数量。

公开(公告)号：US3955272A

公开(公告)日：1976-05-11

申请号：US513772

申请日：1974-10-10

Applicant: Stig Lennart Hallerback

Inventor： Stig Lennart Hallerback

IPC: H02K1/14 ,  H02K15/02 ,  H02K15/12

CPC classification number: H02K15/022 ,  H02K1/141 ,  H02K2201/06 ,  Y10T29/49009 ,  Y10T29/49075

Abstract: A method for making a stator for electric motors comprised of a plurality of laminations arranged with their sides in the direction of the rotor axis wherein the edge portions of the laminations running in the axial direction are bent upwardly towards the stator bore and maintained in spaced apart relation at a predetermined position and permanently fixed in that position solely by means of a moulding compound. Each lamination stack consists of undivided laminations comprising a north and a south pole wherein each main pole consists of the lamination edges of the two adjacent stacks. The method consists of the steps of positioning the laminations between a pair of inner and outer mould members wherein the inner mould member has means for supporting the terminal edges of the laminations in the predetermined spaced apart relation and disposed along the circumference of a circle and thereafter permanently fixing the terminal edges of the laminations in relation to one another by means of a moulding mass in the spaces between the laminations adjacent the terminal edge portions.

Abstract translation: 一种用于制造用于电动机的定子的方法，包括沿转子轴线方向布置的多个叠片，其中在轴向方向上运行的叠片的边缘部分向上朝向定子孔向上弯曲并保持间隔开 在预定位置处的关系，并且仅通过模塑料永久地固定在该位置。 每个层压叠层由包括北极和南极的不分割的叠层组成，其中每个主极由两个相邻叠层的层叠边缘组成。 该方法包括以下步骤：将叠片定位在一对内外模具构件之间，其中内模构件具有用于以预定间隔的关系支撑叠片的端边缘并沿其圆周设置的装置 通过邻近终端边缘部分的叠片之间的空间中的模制物料将相邻的叠片的端边永久地固定。

公开(公告)号：US3953754A

公开(公告)日：1976-04-27

申请号：US420877

申请日：1973-12-03

Applicant: Stig Lennart Hallerback

Inventor： Stig Lennart Hallerback

IPC: H02K1/06 ,  H02K1/14 ,  H02K15/02 ,  H02K1/12

CPC classification number: H02K15/022 ,  H02K1/141 ,  H02K1/146 ,  H02K2201/06

Abstract: A stator for electric motors including a rotor and consisting of at least a pair of stacks each comprised of a plurality of laminations arranged with their sides in the direction of the rotor axis, the edge portions of the laminations running in the axial direction being bent inwardly towards the stator bore and maintained in spaced-apart relation at a position predetermined with regard to the magnetic flux lines and being permanently fixed in this position solely by means of a moulded compound, each lamination stack consisting of undivided laminations comprising a north and a south pole, each main pole consisting of the lamination edges of two adjacent lamination stacks.

Abstract translation: 一种用于包括转子的电动机的定子，由至少一对堆叠构成，每个堆叠由沿转子轴线方向排列的多个叠片组成，所述叠片的沿轴向延伸的边缘部分向内弯曲 朝向定子孔并且在相对于磁通线预定的位置处保持间隔开的关系，并且仅通过模制的化合物永久地固定在该位置，每个层叠叠层由包括北和南的不分割的叠片组成 极，每个主极由两个相邻层压叠层的层压边缘组成。