公开(公告)号：US4894572A

公开(公告)日：1990-01-16

申请号：US924903

申请日：1986-10-30

申请人： Manabu Shiraki

发明人： Manabu Shiraki

IPC分类号： H02K29/03 ,  H02K29/08

CPC分类号： H02K29/08 ,  H02K29/03

摘要： A disk-type brushless fan motor comprises a stator yoke having a suitable cutaway portion formed therein for allowing generation of a cogging torque to allow self-starting of a magnet rotor of the motor. A printed circuit board underlies the stator yoke, and a position detecting element is located on a face of the printed circuit board opposing to the cutaway portion of the stator yoke. The printed circuit board has one or more small cutaway portions formed along an outer periphery thereof within a range of the cutaway portion of the stator yoke, and opposite leads or terminals of a pair of armature coils located on the stator yoke extend through the cutaway portions of the printed circuit board in order to establish electric connection to electric parts located on the rear side of the printed circuit board.

摘要翻译： 盘式无刷风扇电动机包括定子轭，其具有形成在其中的合适的切除部分，用于允许产生齿槽转矩以允许马达的磁转子自启动。 印刷电路板位于定子磁轭的下方，位置检测元件位于印刷电路板的与定子磁轭的切除部分相对的面上。 印刷电路板在定子磁轭的切除部分的范围内具有沿其外周形成的一个或多个小切口部分，并且位于定子磁轭上的一对电枢线圈的相对的引线或端子延伸穿过切除部分 以便与位于印刷电路板背面的电气部件建立电连接。

公开(公告)号：US4739203A

公开(公告)日：1988-04-19

申请号：US923088

申请日：1986-10-24

申请人： Osami Miyao ,  Manabu Shiraki

发明人： Osami Miyao ,  Manabu Shiraki

IPC分类号： H02K29/08 ,  H02K37/00

CPC分类号： H02K29/08

摘要： A single-phase brushless motor which can rotate smoothly by a uniform torque over an entire range of rotation with reduced torque ripples, without generating a high cogging torque for allowing self-starting of the motor. The motor comprises a field magnet as a rotor having 2P north and south magnetic poles, either the north or the south poles having a width equal to an electrical angle of about 120 degrees while the other poles have a width equal to an electrical of about 240 degrees. The field magnet is mounted for rotation in an opposing relationship to a stator armature core which has a plurality of radially extending stator poles formed in a circumferentially equidistantly spaced relationship thereon. A plurality of stator coils for two phases are wound selectively on the stator poles. An electric circuit detects the position of the field magnet to energize the armature coils for the two phases alternately for an electric angle of about 180 degrees.

摘要翻译： 一种单相无刷电动机，可以在整个旋转范围内通过均匀的转矩平稳地旋转，同时减小转矩波动，而不会产生高的齿槽转矩，以允许电机的自启动。 电动机包括作为具有2P南北磁极的转子的磁场磁体，北极或南极的宽度等于约120度的电角度，而另一个极的宽度等于约240的电 度。 磁场磁体被安装成与定子电枢磁芯相对旋转的旋转，该定子电枢磁芯具有多个径向延伸的定子极，其形成在其上沿周向等距间隔的关系。 用于两相的多个定子线圈选择性地缠绕在定子极上。 电路检测场磁体的位置，以使两相的电枢线圈以约180度的电角度交替地通电。

公开(公告)号：US4707645A

公开(公告)日：1987-11-17

申请号：US924902

申请日：1986-10-30

申请人： Osami Miyao ,  Manabu Shiraki ,  Masayuki Ohsaka

发明人： Osami Miyao ,  Manabu Shiraki ,  Masayuki Ohsaka

IPC分类号： H02K29/00 ,  H02K29/08 ,  H02K23/00

CPC分类号： H02K29/08

摘要： A single-phase brushless motor which can rotate smoothly with minimized torque ripples without generating a cogging torque. A magnet rotor of the motor has north and south magnetic pole and non-magnetized zones successively formed in ranges thereof each having an angular width of 120 degrees in electrical angle, and a stator armature is mounted in an opposing relationship to the magnet rotor and includes an annular stator yoke on which a same number of stator coils for each of 3 phases are wound in a troidal configuration and successively located in an angularly spaced relationship by an electrical angle of 120 degrees. A position detecting element is located for detecting a magnetic pole or non-magnetized portion of the magnet rotor, and in response to signals successively developed from the position detecting element during rotation of the magnet rotor, an energization controlling circuit successively energizes the stator coils to rotate the magnet rotor in a predetermined direction.

摘要翻译： 单相无刷电动机可以最小化转矩波动平滑地旋转，而不会产生齿槽转矩。 电动机的磁铁转子具有北电磁极和非磁化区，其各自的角度宽度以电角度为120度依次形成，并且定子电枢以与磁体转子相对的关系安装，并且包括 一个环形定子磁轭，其中相位数量的定子线圈中的每一个以三相绕组形成并且以角度间隔的关系依次以120度的电角度定位。 位置检测元件用于检测磁体转子的磁极或非磁化部分，并且响应于在磁体转子旋转期间从位置检测元件连续产生的信号，通电控制电路将定子线圈依次通电 沿预定方向旋转磁体转子。

公开(公告)号：US5036319A

公开(公告)日：1991-07-30

申请号：US632627

申请日：1990-12-26

申请人： Manabu Shiraki ,  Osami Miyao ,  Shoji Fujisawa ,  Shunji Kawashima

发明人： Manabu Shiraki ,  Osami Miyao ,  Shoji Fujisawa ,  Shunji Kawashima

IPC分类号： G01D5/14 ,  G01D5/16 ,  G01D5/245 ,  H03M1/30

CPC分类号： G01D5/145 ,  G01D5/2451 ,  H03M1/30

摘要： An magnetic encoder includes a multipolar magnetic body having a row of alternate North and South poles of equal widths, and a magnetoresistive element diposed in confrontation to the multipolar magnetic body. The magnetoresistive element includes at least one A phase magnetoresistive element member and at least one B phase magnetoresisitve element disposed in juxtaposition over ##EQU1## where n is an integer greater than or equal to 1, and .lambda. is a width of each individual pole of the multiplar magnetic body. Each of the A phase magnetoresistive element members and the B phase magnetoresistive element member has a group of series connected linear conductors arranged side-by-side into a comb-like shape. The A phase magnetoresistive element member extends over ##EQU2## and the B phase magnetoresistive element member is out of phase with the A phase magnetoresistive element member by ##EQU3##

摘要翻译： 磁编码器包括具有相等宽度的交替的北极和南极的一行的多极磁体，以及与多极磁体对抗的磁阻元件。 磁阻元件包括至少一个A相磁阻元件和至少一个B相磁致伸缩元件，其以n为大于或等于1的整数设置，并且λ是每个单独的极的宽度 多磁体。 A相磁阻元件和B相磁阻元件各自具有并排配置成梳状形状的一组串联连接的线状导体。 A相磁阻元件构件通过延伸并且B相磁阻元件与A相磁阻元件构件异相，通过

公开(公告)号：US4861237A

公开(公告)日：1989-08-29

申请号：US921396

申请日：1986-10-22

申请人： Manabu Shiraki ,  Kazuhito Egami

发明人： Manabu Shiraki ,  Kazuhito Egami

IPC分类号： H02K11/00 ,  F04D25/06 ,  F04D25/08 ,  G06K7/00 ,  G06K7/06 ,  G06K13/08 ,  G06K17/00 ,  H01R13/629 ,  H02K7/14 ,  H05K5/02

CPC分类号： F04D29/005 ,  F04D25/0653

摘要： A light-weighted, inexpensive axial-flow fan apparatus which can prevent axial leakage of a magnetic flux of a brushless motor installed therein. A body member of the apparatus or a motor casing on which the motor is supported is made of a non-magnetic material such as a resin material, and a name plate formed from a magnetic seal is applied to the bottom of the motor casing so as to pass a magnetic flux therethrough.

摘要翻译： 一种轻量级的便宜的轴流风扇装置，其能够防止安装在其中的无刷电动机的磁通量的轴向泄漏。 马达被支撑在其上的装置的主体构件或马达壳体由诸如树脂材料的非磁性材料制成，并且由电磁密封件形成的铭牌被施加到马达壳体的底部，以便 以通过磁通。

公开(公告)号：US4737674A

公开(公告)日：1988-04-12

申请号：US919990

申请日：1986-10-17

申请人： Osami Miyao

发明人： Osami Miyao

IPC分类号： H02K1/27 ,  H02K29/03 ,  H02K29/08 ,  H02K37/00

CPC分类号： H02K29/08 ,  H02K1/2733 ,  H02K29/03

摘要： A cored single-phase brushless motor including a single position-detecting element can start itself without provision of a special cogging generating means. A field magnet as a rotor of the motor has alternate north and south magnetic pole zones, one of which has a width equal to an electrical angle of about 120 degrees while the other has a width equal to an electrical angle of about 240 degrees. A stator armature core has stator poles formed in a circumferentially equidistantly spaced relationship thereon and having a width equal to an electrical angle of about 120 degrees, and armature coils are wound on the stator poles. A position-detecting magnet rotor is formed on the field magnet, and a magnetic sensor detects a north, south magnetic pole or non-magnetized zone of the magnet rotor, to detect the position of the field magnet. An electric current successively energizes, in response to signals from the magnetic sensor, the armature coils for an electrical angle of 120 degrees to rotate the rotor.

摘要翻译： 包括单个位置检测元件的核心单相无刷电动机可以自行启动，而不需要特殊的齿槽发生装置。 作为电动机的转子的场磁体具有交替的北和南磁极区域，其中一个具有等于约120度的电角度的宽度，而另一个具有等于约240度的电角度的宽度。 定子电枢铁芯具有在其上周向等距间隔地形成的定子极，其宽度等于约120度的电角度，电枢线圈缠绕在定子极上。 在场磁体上形成位置检测用磁体转子，磁传感器检测磁转子的北，南磁极或非磁化区域，以检测场磁体的位置。 电流响应于来自磁传感器的信号，电枢线圈以120度的电角度连续地激励以使转子旋转。

公开(公告)号：US4724350A

公开(公告)日：1988-02-09

申请号：US909720

申请日：1986-09-22

申请人： Manabu Shiraki ,  Osami Miyao

发明人： Manabu Shiraki ,  Osami Miyao

IPC分类号： H02K29/08 ,  H02K21/14

CPC分类号： H02K29/08

摘要： A 1-phase disk-type brushless motor comprises a cogging-generating magnetic member or plate having a width substantially equal to the width of each pole of a magnet rotor and located at a specific position on a stationary printed circuit board so that the magnet rotor may stop with one pole thereof just opposed to the magnetic member, thereby assuring self-starting of the motor. The cogging generating magnetic member is shaped such that the volume or area may gradually decrease forwardly relative to the direction of rotation of the motor so that the cogging torque generated by the magnetic member may gradually increase upon starting of the motor, thereby assuring smooth rotation of the motor.

摘要翻译： 1相盘型无刷电动机包括具有与磁转子的每个磁极的宽度大致相等的位于固定印刷电路板上的特定位置处的齿槽产生磁性构件或板，使得磁体转子 可以以与磁性构件相对的一个极止停，从而确保电动机的自启动。 齿槽发生磁性部件成形为使得体积或面积可以相对于电动机的旋转方向向下逐渐减小，使得由电动机起动时由磁性部件产生的齿槽转矩可以逐渐增加，从而确保平滑的旋转 电机。

公开(公告)号：US4922162A

公开(公告)日：1990-05-01

申请号：US401479

申请日：1989-08-29

申请人： Manabu Shiraki ,  Sumio Ishii

发明人： Manabu Shiraki ,  Sumio Ishii

IPC分类号： H02K29/00 ,  H02K29/06

CPC分类号： H02K29/06 ,  H02K2201/06 ,  Y10S310/06

摘要： A disk-type single-phase brushless motor wherein a reluctance torque having a sufficient magnitude can be generated to assure self-starting and continued rotation of the motor and production of disagreeable noises is minimized. The motor comprises a stator yoke mounted in an opposing relationship to a magnet rotor with an axial air gap left therebetween. The magnet rotor has an equal circumferential pole width .theta.. The stator yoke has a cutaway portion formed therein for enabling self-starting of the motor. The cutaway portion has a specific shape including a first radially extending edge and a second edge extending in a predetermined angular relationship from an inner end of the first edge to an outer circumferential edge of the stator yoke. The stator yoke is positioned at a predetermined angular position relative to a coreless armature coil so that the first edge thereof may be angularly spaced by a predetermined angle from a position at which a maximum starting torque is produced in the direction opposite the direction of rotation of the rotor.

摘要翻译： 可以产生具有足够大的磁阻的盘式单相无刷电动机，以确保马达的自启动和持续旋转，并且使不愉快的噪音的产生最小化。 电动机包括以与磁转子相对的关系安装的定子轭，其间留有轴向气隙。 磁体转子具有相等的圆周极宽度θ。 定子线圈具有形成在其中的切口部分，以实现马达的自启动。 切除部分具有包括第一径向延伸边缘和从第一边缘的内端到定子轭的外周边缘以预定角度关系延伸的第二边缘的特定形状。 定子磁轭相对于无芯电枢线圈定位在预定的角度位置，使得其第一边缘可以与在与旋转方向相反的方向上产生最大起动转矩的位置成角度地隔开预定角度 转子。

公开(公告)号：US4733119A

公开(公告)日：1988-03-22

申请号：US909719

申请日：1986-09-22

申请人： Manabu Shiraki ,  Osami Miyao

发明人： Manabu Shiraki ,  Osami Miyao

IPC分类号： H02K29/08 ,  H02K21/14

CPC分类号： H02K29/08

摘要： A 1-phase coreless disk-type brushless motor or axial-flow brushless fan motor comprises a single position-detecting element located at a position on a printed circuit board corresponding to one of the magnetically active conductor portions of a stator coil or coils of the stator armature. A cogging-generating stator yoke having a cutaway portion of a specifically determined angular width is positioned relative to the stator coils, such that an end of the cutaway portion thereof is spaced by a distance equal to about one fourth of the pole width from another magnetically active conductor portion of the stator coils, so that the magnet rotor may stop at a position from which the motor can start itself. Various forms of such cogging generating stator yoke are disclosed, including a stator yoke which also serves as a circuit board.

摘要翻译： 1相无芯无磁盘式无刷电动机或轴流式无刷风扇电动机包括位于印刷电路板上的与定子线圈的一个磁性有效导体部分相对应的位置的单个位置检测元件或 定子电枢。 具有特定确定的角宽度的切口部分的齿槽产生定子线圈相对于定子线圈定位，使得其切除部分的端部间隔相当于磁极宽度的约四分之一的距离 定子线圈的有源导体部分，使得磁体转子可以停在电动机可以从其自身开始的位置。 公开了这种齿槽产生定子磁轭的各种形式，包括也用作电路板的定子磁轭。

公开(公告)号：US4728833A

公开(公告)日：1988-03-01

申请号：US919662

申请日：1986-10-16

申请人： Manabu Shiraki ,  Osami Miyao

发明人： Manabu Shiraki ,  Osami Miyao

IPC分类号： H02K29/00 ,  H02K29/08

CPC分类号： H02K29/08

摘要： A 1-phase brushless motor comprises a single position-detecting element located at a stationary position corresponding to a magnetically active conductor portion of an armature coil of an armature member. The position-detecting element is either a magnetoelectric transducer or a position-detecting coil. A plastics magnet is molded integrally with the armature coil and is magnetized such that it cooperates with a field magnet as a rotor to generate a field magnet attracting and repulsing torque within a particular range from a dead point, so as to stop the field magnet at a position from which the motor can start itself.

摘要翻译： 单相无刷电动机包括位于与电枢构件的电枢线圈的磁性有效导体部分对应的静止位置的单个位置检测元件。 位置检测元件是磁电换能器或位置检测线圈。 塑料磁体与电枢线圈一体地模制并被磁化，使得它与作为转子的磁场磁体配合，以在死区的特定范围内产生磁场吸引和排斥转矩，以便将磁场磁铁停止在 电机可以自动启动的位置。