-
公开(公告)号：US5319270A
公开(公告)日：1994-06-07
申请号：US708884
申请日：1991-05-30
IPC分类号： H02K7/14 , H02K11/00 , H02K21/16 , H02K29/08 , H02K29/14 , H02K41/02 , H02K1/06 , H02K1/12 , G11B5/0166
CPC分类号： H02K41/02 , H02K11/01 , H02K11/21 , H02K11/215 , H02K11/33 , H02K21/16 , H02K29/08 , H02K29/14 , H02K7/14
摘要： An electric motor used for example in a magnetic disk drive, includes a rotor having a hub on which the magnetic disk is mounted, and an annular driving permanent magnet, and rotating together with a rotary shaft, and a stator disposed outside the rotor, having a core and coils wound on the core. A signaling permanent magnet for detecting the rotary angle or the rotational speed of the rotor may be provided on the radially inner side of the driving permanent magnet. Part of the outer periphery of the stator core may be retracted radially inward or cut away to form a concavity or an open part. A magnetic shielding plate may further be provided to cover the coils, with part or the entirety of the magnetic shielding plate being positioned closer to the rotary shaft than the outermost periphery of the rotor to prevent the escape of the rotor in the direction of the rotary shaft. The stator core may be provided, at its inner extremities, bent portions extending in the direction parallel with the rotary shaft, and away from the hub. Alternatively, the midpoint of the stator core may be positioned farther away from the hub than the midpoint of the driving permanent magnet.
摘要翻译： 例如在磁盘驱动器中使用的电动机包括具有安装有磁盘的轮毂的转子和环形驱动用永久磁铁，与旋转轴一起旋转，以及配置在转子的外侧的定子，具有 核心和线圈缠绕在核心上。 用于检测转子的旋转角度或转速的信号永磁体可以设置在驱动永磁体的径向内侧。 定子芯的外周的一部分可以径向向内缩回或切除以形成凹部或开口部。 可以进一步设置磁屏蔽板以覆盖线圈，使得磁屏蔽板的一部分或全部位于比转子的最外周更靠近旋转轴的位置，以防止转子沿旋转方向逸出 轴。 定子芯可以在其内端处设置在与旋转轴平行的方向上延伸的远离轮毂的弯曲部分。 或者，定子芯的中点可以比驱动永磁体的中点更远离轮毂。
-
公开(公告)号：US5410201A
公开(公告)日：1995-04-25
申请号：US186705
申请日：1994-01-25
CPC分类号： H02K41/02 , H02K11/01 , H02K11/21 , H02K11/215 , H02K11/33 , H02K21/16 , H02K29/08 , H02K29/14 , H02K7/14
摘要： An electric motor used for example in a magnetic disk drive, comprises a rotor having a hub on which the magnetic disk is mounted, and an annular driving permanent magnet, and rotating together with a rotary shaft, and a stator disposed outside the rotor, having a core and coils wound on the core. A signaling permanent magnet for detecting the rotary angle or the rotational speed of the rotor may be provided on the radially inner side of the driving permanent magnet. Part of the outer periphery of the stator core may be retracted radially inward or cut away to form a concavity or an open part. A magnetic shielding plate may further be provided to cover the coils, with part or the entirety of the magnetic shielding plate being positioned closer to the rotary shaft than the outermost periphery of the rotor to prevent the escape of the rotor in the direction of the rotary shaft. The stator core may be provided, at its inner extremities, bent portions extending in the direction parallel with the rotary shaft, and away from the hub. Alternatively, the midpoint of the stator core may be positioned farther away from the hub than the midpoint of the driving permanent magnet.
摘要翻译： 例如在磁盘驱动器中使用的电动机包括具有安装有磁盘的轮毂的转子和环形驱动永久磁铁，并与旋转轴一起旋转，以及设置在转子外侧的定子，具有 核心和线圈缠绕在核心上。 用于检测转子的旋转角度或转速的信号永磁体可以设置在驱动永磁体的径向内侧。 定子芯的外周的一部分可以径向向内缩回或切除以形成凹部或开口部。 可以进一步设置磁屏蔽板以覆盖线圈，使得磁屏蔽板的一部分或全部位于比转子的最外周更靠近旋转轴的位置，以防止转子沿旋转方向逸出 轴。 定子芯可以在其内端处设置在与旋转轴平行的方向上延伸的远离轮毂的弯曲部分。 或者，定子芯的中点可以比驱动永磁体的中点更远离轮毂。
-
公开(公告)号：US5459944A
公开(公告)日：1995-10-24
申请号：US110803
申请日：1993-08-23
申请人： Toshio Tatsutani , Tetsuya Tanaka , Toshihiko Horii , Kazuhiko Hotta , Keiu Kawasaki , Keiichi Hasegawa , Yoshiyuki Umai , Masaaki Sendo
发明人： Toshio Tatsutani , Tetsuya Tanaka , Toshihiko Horii , Kazuhiko Hotta , Keiu Kawasaki , Keiichi Hasegawa , Yoshiyuki Umai , Masaaki Sendo
CPC分类号： A47K10/48
摘要： A hand dryer in which a channel-like hand insertion unit 5 opening at the front face and side faces is formed in the front face of a case 6 which functions as an outer shell. Upper and lower blowout nozzles 32 and 33 are disposed in the upper and lower faces of the hand insertion unit 5. A high-pressure air flow generation device 7 supplies high-pressure air flow to the blowout nozzles 32 and 33. A high-speed wind generated in the hand insertion unit 5 blows water on hands to the inner portion of the hand insertion unit 5. The blown water is drained to the outside of the hand insertion unit 5, through drainage holes 18 which are disposed at lateral ends of the bottom face of the hand insertion unit 5. Thereby, the blown water from the hands can be smoothly drained without remaining in the hand insertion unit.
摘要翻译： 在作为外壳的壳体6的前面形成有在前面和侧面开口的通道状的手插入单元5的手动干燥机。 上下喷孔32和33设置在手插入单元5的上表面和下表面中。高压空气流产生装置7向吹出喷嘴32和33提供高压空气流。高速气流 在手插入单元5中产生的风将手上的水吹到手插入单元5的内部。吹出的水通过设置在手插入单元5的外侧的排水孔18排出到手插入单元5的外部。 因此，能够平稳地排出来自手的吹出水，而不会残留在手插入单元中。
-
公开(公告)号：US4442386A
公开(公告)日：1984-04-10
申请号：US462203
申请日：1983-01-31
CPC分类号： H02P6/00 , H02P2209/07
摘要： A control apparatus of a transistor motor comprises an addition reference setting circuit (203), a positive voltage addition circuit (204 and 207), a negative voltage addition circuit (205), and a positive/negative voltage addition circuit (202). The addition reference setting circuit (203) is adapted to produce reference values VC and VD. The addition is made of the magnitude of the positive-going component with respect to the reference value VC out of the peak values of the feedback voltages (VU, VV and VW) in the positive voltage addition circuit, whereby the output VAA is provided. Addition is also made of the magnitude of the negative going component with respect to the reference value VD out of the peak values of the feedback voltages in the negative voltage addition circuit, whereby the output VB is provided. The above described outputs VAA and VB are added to each other in the positive/negative voltage addition circuit, whereby the output VE is provided. The output voltages of the hall-effect devices (.alpha., .beta. and .gamma.) are controlled such that the magnitude of the output VE may be consistent with the magnitude of the control signal (VF) in a difference control circuit (209 and 201). Accordingly, it was confirmed that a torque ripple of the motor is drastically mitigated.
摘要翻译： 晶体管电动机的控制装置包括加法参考设定电路（203），正电压加法电路（204和207），负电压加法电路（205）和正/负电压加法电路（202）。 附加参考设定电路（203）适于产生参考值VC和VD。 在正电压加法电路中，反馈电压（VU，VV，VW）的峰值的相对于基准值VC的正向分量的大小相加，由此提供输出VAA。 此外，负电压相加电路中的反馈电压的峰值的相对于基准值VD的负向分量的大小也是相加的，由此提供输出VB。 上述输出VAA和VB在正/负电压相加电路中彼此相加，由此提供输出VE。 控制霍尔效应器件（+60，β和γ）的输出电压，使得输出VE的幅度可以与差分控制电路（209和201）中的控制信号（VF）的幅度一致， 。 因此，可以确认电动机的转矩脉动得到显着减轻。
-
-
-
搜索结果
4 条记录 (耗时 0.016 秒)