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公开(公告)号：US5034642A
公开(公告)日：1991-07-23
申请号：US575366
申请日：1990-08-30
Applicant: Keith I. Hoemann , Scott E. Eckles
Inventor： Keith I. Hoemann , Scott E. Eckles
CPC classification number: H02K29/08 , H02K1/272 , H02K1/2726 , H02K2201/06
Abstract: A permanent magnet rotor for an electric motor includes longitudinally extending main rotor field and sensor field sections, the sensor field section being substantially shorter than the main rotor field section and being disposed at one end thereof. The sensor field section is magnetized in circumferentially disposed parallel strips of alternating magnetic polarity around the rotor. The main rotor field section has longitudinally extending strips of alternating magnetic polarity which are skewed in a predetermined pattern. The predetermined pattern includes a first portion in which each longitudinally extending strip runs generally at a first predetermined non-zero angle with respect to the longitudinal axis of the rotor, a second portion in which each longitudinally extending strip runs generally at a second predetermined non-zero angle with respect that axis, and a third portion in which each longitudinally extending strip runs generally at the first predetermined non-zero angle with respect to the axis. The first and second angles are opposite in sign.
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公开(公告)号：US4933584A
公开(公告)日：1990-06-12
申请号：US288474
申请日：1988-12-22
Applicant: Harold B. Harms , Ronald J. Krefta , John L. Oldenkamp
Inventor： Harold B. Harms , Ronald J. Krefta , John L. Oldenkamp
CPC classification number: H02K1/278 , H02K1/16 , H02K1/2786 , H02K29/12 , H02K2201/06
Abstract: An electronically commutated motor has substantially constant air gap energy to reduce cogging. A rotatable assembly has permanent magnet elements which rotate about an axis of rotation. The elements are oriented with respect to said axis of rotation to provide a magnetic field with lines of flux along a plane forming a skew angle of s.sub.1 mechanical degrees with respect to the axis of rotation, wherein s.sub.1 is not equal to zero. The elements may be provided with an unmagnetized portion referred to as a phantom skew. A stationary assembly is in magnetic coupling relation with the permanent magnet elements of the rotatable assembly and has t spaced teeth with adjacent teeth defining a slot therebetween, wherein t is positive integer. Each tooth has a surface adjacent the rotatable assembly having one or more notches forming a skew angle of s.sub.2 mechanical degrees with the axis of rotation. Each tooth has winding stages adapted for commutation in at least one preselected sequence. The skewed magnetic field, skewed notches and phantom magnetic skews reduce cogging between the rotatable assembly and the stationary assembly as the rotatable assembly rotates, while maintaining a back EMF waveform having a maximized flat top width.
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公开(公告)号：US4914934A
公开(公告)日：1990-04-10
申请号：US397750
申请日：1989-08-23
Applicant: Harold L. Fritzsche
Inventor： Harold L. Fritzsche
CPC classification number: H02K15/026 , H02K1/16 , H02K2201/06 , Y10T29/49009 , Y10T29/49071
Abstract: A method of forming an edgewise wound core from a lanced strip of generally thin ferromagnetic material having a yoke section, a plurality of teeth extending generally laterally from the yoke section on a plurality of preselected pitch axes, and a plurality of arcuate edges intersecting with each other on the yoke section facing generally opposite the teeth. In practicing this method, the lanced strip is deformed into a plurality of helical convolutions, and the helical convolutions are accumulated in a generally axial stack with the arcuate edges and teeth extending generally radially outwardly and inwardly of the stack. The teeth and the arcuate edges are respectively aligned generally in axial row formations thereof across the stack, and the teeth and the intersections between adjacent ones of the arcuate edges are disposed generally in radial alignment with each other on the pitch axes of the teeth, respectively.
Abstract translation: 一种从具有磁轭部分的大体薄铁磁材料的拉丝带形成沿边卷绕的芯的方法，在多个预选的俯仰轴上从轭部分大致横向延伸的多个齿，以及与每一个相交的多个弧形边缘 另一个在磁轭部分面对大致相对的齿。 在实施该方法时，该拉丝带变形为多个螺旋卷积，并且螺旋卷积体以大致轴向的堆叠方式积聚，其中弓形边缘和齿通常沿堆叠的径向向外和向内延伸。 齿和弧形边缘分别大体上在整个堆叠中的轴向排形成对齐，并且齿和相邻弧形边缘之间的交叉分别大体上在齿的俯仰轴线上彼此径向对准 。
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公开(公告)号：US4868439A
公开(公告)日：1989-09-19
申请号：US124305
申请日：1987-11-23
Applicant: James L. King
Inventor： James L. King
CPC classification number: H02K1/185 , H02K1/16 , H02K15/028 , H02K2201/06 , Y10T29/49009 , Y10T29/49071 , Y10T29/49078 , Y10T29/4987
Abstract: A lanced strip of generally thin ferromagnetic material adapted to be edgewise wound into a core for a dynamoelectric machine. The lanced strip has a continuous yoke section extending generally lengthwise thereof, and a plurality of teeth on the lanced strip have preselected pitch axes and extend generally laterally from the yoke section, respectively. A plurality of extensions on the lanced strip extend generally laterally from the yoke section on the pitch axes of the teeth and opposite thereto, respectively.A dynamoelectric machine, a core, a stationary assembly are also disclosed.
Abstract translation: 一种通常薄的铁磁材料的拉丝条，其适于沿边缘卷绕成用于电动机的铁芯。 所述带状条具有大致纵向延伸的连续的轭部分，并且所述带状条上的多个齿分别具有预定的俯仰轴线并且大致横向地从所述轭部部分延伸。 在切割条上的多个延伸部分别在齿的俯仰轴线上与轭部分别大致横向地延伸并与其相对。 还公开了电动机，铁芯，固定组件。
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公开(公告)号：US4794778A
公开(公告)日：1989-01-03
申请号：US934889
申请日：1986-11-25
Applicant: Harold L. Fritzsche
Inventor： Harold L. Fritzsche
CPC classification number: H02K1/16 , H02K15/026 , H02K2201/06 , Y10T29/49009 , Y10T29/49071 , Y10T29/49078 , Y10T29/53161
Abstract: Apparatus for predeterminately sizing a core has a pair of generally opposed dies operable for compressing only an outer circumferential section of the core defined generally axially between a pair of opposite end faces of the core at least generally adjacent an outer circumferential surface thereof, respectively. Sizing jaws and a sizing arbor are operable for disposition in confronting and predetermined radially spaced apart relation with the outer circumferential surface and a plurality of tooth tip rows defining an inner circumferential surface of the core between the opposite end faces thereof, and the outer circumferential surface and the tooth tip rows of the core are displaced generally radially inwardly thereof into sizing engagement with the sizing jaws and sizing arbor thereby to effect the predetermined sizing of the inner and outer circumferential surfaces of the core in response to the compressing of only the outer circumferential section of the core by the opposed dies, respectively.
Abstract translation: 用于预先确定芯的尺寸的装置具有一对大致相对的模具，其可操作用于仅分别在至少大致相邻于其外圆周表面的方向仅压缩芯的一对相对端面之间大致轴向限定的芯的外周部分。 尺寸钳口和尺寸心轴可操作用于与外圆周表面面对并且预定的径向间隔开的关系，以及多个齿顶列，其限定在其相对端面之间的芯的内圆周表面，并且外周表面 并且芯的齿尖行通常径向向内移动，以与施胶钳和定径心轴形成尺寸接合，从而响应于仅压缩外周的内芯和外圆周表面的预定尺寸 核心部分由相对的模具分别。
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Patent Agency Ranking116.发明授权Dynamoelectric machine with permanent magnet and magnet mounting surface arrangement 失效具有永久磁铁和磁铁安装表面布置的电动机
公开(公告)号：US4642502A
公开(公告)日：1987-02-10
申请号：US855344
申请日：1986-04-24
Applicant: Keith H. Carpenter , Jon E. Miller , John W. Murphy
Inventor： Keith H. Carpenter , Jon E. Miller , John W. Murphy
CPC classification number: H02K1/278 , H02K2201/06
Abstract: A dynamoelectric machine has a rotor or stator which comprises a core with axial groups of flat, rectangular magnet mounting surfaces, each successive magnet mounting surface of a group being circumferentially offset by a common angle of axial rotation from the previous magnet mounting surface. A magnet is mounted on each magnet mounting surface; and each magnet has a flat surface for mounting and an opposing arcuate surface to help form a cylindrical surface. Each of the magnets has the shape, when viewed radially, of a parallelogram forming a skew angle with the axis corresponding with the rotational offset of the magnet mounting surfaces to define skewed slots between skewed magnetic poles extending the substantial axial length of the core. The core may comprise polygonal lamina with the flat polygon sides grouped to form the magnet mounting surfaces; or it may comprise circular lamina with a non-magnetic sleeve having the magnet mounting surfaces. The latter provides a larger but more even air gap.
Abstract translation: 电动机具有转子或定子，该转子或定子包括具有平坦矩形磁体安装表面的轴向组的芯，每个连续的磁体安装表面周向地偏离与先前的磁体安装表面的共同的轴向旋转角度。 磁体安装在每个磁体安装表面上; 并且每个磁体具有用于安装的平坦表面和相对的弓形表面以帮助形成圆柱形表面。 每个磁体在径向观察时具有形成与磁体安装表面的旋转偏移相对应的轴线的偏斜角的平行四边形的形状，以在延伸磁芯的实质轴向长度的倾斜磁极之间形成倾斜的狭槽。 芯可以包括多边形层，其中平面多边形被分组以形成磁体安装表面; 或者其可以包括具有带有磁体安装表面的非磁性套筒的圆形薄片。 后者提供更大但更均匀的气隙。
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公开(公告)号：US4622835A
公开(公告)日：1986-11-18
申请号：US680762
申请日：1984-12-12
Applicant: Donald K. Bisson , Harold L. Fritzsche
Inventor： Donald K. Bisson , Harold L. Fritzsche
CPC classification number: H02K1/16 , H02K15/026 , H02K2201/06 , Y10T29/49009 , Y10T29/49071 , Y10T29/49078 , Y10T29/53161
Abstract: A method of continuously forming edgewise wound cores. A continuous strip of ferromagnetic material is fed to a winding station and through a means operable generally for severing the continuous strip, and the continuous formation of the edgewise wound cores is effected at the winding station from the continuous strip fed thereto. The thickness of the continuous strip is measured along the length of the continuous strip fed to the winding station, and the thickness measurements are summed. The summation of the thickness measurements are compared with a preselected value corresponding to a predetermined stack height for each of the edgewise wound cores formed at the winding station, and the severing means is operated to sever the continuous strip at least generally when the summation of the thickness measurements attains the preselected value thereby to terminate the formation of respective ones of the edgewise wound cores at the winding station.Apparatus for continuously forming edgewise wound cores is also disclosed.
Abstract translation: 连续形成沿边卷绕芯的方法。 连续的铁磁材料条被馈送到卷绕站，并且通过一般可以切断连续条带的装置，并且在卷绕站处连续形成沿边卷绕的卷芯，从送出的连续条带上进行。 连续条带的厚度沿着连续条带的长度进行测量，并将厚度测量值相加。 将厚度测量的总和与形成在卷绕站处的每个绕边卷绕芯上的预定堆叠高度相对应的预选值进行比较，并且切割装置被操作以至少大体上切断连续条带 厚度测量值达到预选值，从而终止在卷绕站处形成相应的沿边缠绕芯。 还公开了用于连续形成沿边卷绕芯的装置。
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公开(公告)号：US4612470A
公开(公告)日：1986-09-16
申请号：US731476
申请日：1985-05-07
Applicant: Berry E. Smith, Jr. , Nathan N. Sharron
Inventor： Berry E. Smith, Jr. , Nathan N. Sharron
CPC classification number: H02K21/14 , H02K1/12 , H02K21/40 , H02K2201/06
Abstract: An apparatus including a stationary field coil wound with alternating insulated copper wire and insulated steel wire; a rotatable armature comprising a plurality of lengthwise rows of magnets, each row being of a single polarity which is opposite from the polarity of the next adjacent rows; a rotatable sleeve positioned between the field coil and the armature and spaced apart from each, the sleeve comprising a plurality of lengthwise strips of material that attract magnetic flux, spaced apart from each other by a strip of magnetic material that is transparent to magnetic flux, and means to rotate the armature or the sleeve while the other remains stationary.
Abstract translation: 一种包括用交替绝缘铜线缠绕的固定磁场线圈和绝缘钢丝的装置; 包括多个纵向排的磁体的可旋转衔铁，每排具有与下一相邻行的极性相反的单一极性; 位于所述励磁线圈和所述电枢之间并且与所述电枢隔开的可旋转套筒，所述套筒包括吸引磁通量的多个纵向材料条，所述多个纵向条带通过对磁通透明的磁性材料条彼此间隔开， 以及用于使电枢或套筒旋转的装置，而另一个保持静止。
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公开(公告)号：USRE31950E
公开(公告)日：1985-07-16
申请号：US963891
申请日：1978-11-27
Applicant: Kenneth J. Binns
Inventor： Kenneth J. Binns
CPC classification number: H02K1/2713 , H02K21/14 , H02K2201/06
Abstract: A rotor for an electrical alternator or motor is described. The rotor has a number of disc shaped, axially magnetized, permanent magnets separated by steel discs, and elongated pole shoes parallel to the rotor axis making up the rotor periphery. The pole shoes are fixed to appropriate steel discs to give pole-shoe polarities which alternate around the rotor periphery. In order to .[.allow starting as a motor.]. .Iadd.stabilize the machine.Iaddend., alternate pole shoes are divided near one end and fixed to the same steel discs as transversely adjacent pole shoes .[.to give a solid metal rotor section which gives starting by induction motor action, and forms a toothed wheel which runs at synchronous speed by reluctance motor action.]..
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公开(公告)号：US4504755A
公开(公告)日：1985-03-12
申请号：US548333
申请日：1983-11-03
Applicant: Burley C. Semones , Leon G. Reiss
Inventor： Burley C. Semones , Leon G. Reiss
CPC classification number: H02K1/2773 , H02K21/46 , H02K2201/06
Abstract: In an electric motor of the type having a permanent magnet rotor which is subject to cogging torque, a plurality of skewed reluctance notches are cut in the outer diameter of the rotor laminations. The rotor laminations have first and second sets of axial openings which are filled respectively with rare earth magnet material and non-ferrous casting material.
Abstract translation: 在具有经受齿槽转矩的永磁转子的类型的电动机中，在转子叠片的外径上切割出多个倾斜的磁阻切口。 转子叠片具有第一和第二组轴向开口，分别填充有稀土磁体材料和有色金属铸造材料。
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