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    • 3. 发明授权
    • Linear actuator
    • 线性执行机构
    • US07382067B2
    • 2008-06-03
    • US10497678
    • 2002-11-26
    • Hiroshi NakagawaKazumichi KatoToshio MikiMinoru MaedaTakashi FukunagaKozo FurutaniToshiya Sugimoto
    • Hiroshi NakagawaKazumichi KatoToshio MikiMinoru MaedaTakashi FukunagaKozo FurutaniToshiya Sugimoto
    • H02K33/16H02K33/00F04B17/04
    • H01F7/1615H01F7/081H01F7/122H02K7/085H02K21/44H02K33/16H02K41/033
    • An object of the present invention is to provide a linear actuator in which reliability is improved, and performance is also easily improved. The present invention provides a linear actuator including a stator, a movable element having an iron member, and being reciprocatable with respect to the stator, a permanent magnet fixed to the stator so as to be opposed to the iron member, and a coil fixed to the stator. Because both the coil and the permanent magnet are fixed to the stator, electrical current does not have to be supplied to the movable element, and the feeder lines connected to the coil will not be broken due to the movement of the movable element. In addition, the weight of the movable element will not be increased even when the weigh of the permanent magnet is increased in order to obtain high magnetic flux density for improvement in performance. Moreover, because the movable element does not include a magnet, a magnetizing operation does not have to be applied to the movable element. The permanent magnets may be a pair in which the directions the magnetic poles thereof differ from each other, and two pairs of permanent magnets may be provided. The number of magnetic fluxes that run through the magnetic pole elements and the iron member can be increased by providing a magnetic reluctance section around the permanent magnets.
    • 本发明的目的是提供一种可靠性提高的线性致动器,并且性能也容易提高。 本发明提供了一种线性致动器,其包括定子,具有铁构件的可移动元件,并且能够相对于定子往复运动;固定到定子上以与铁构件相对的永磁体,以及固定到 定子。 由于线圈和永磁体均固定在定子上,所以不必向可动元件供电,并且由于可移动元件的移动而连接到线圈的馈线不会被破坏。 此外,为了提高性能,为了获得高的磁通密度,即使永磁体的重量增加,可移动元件的重量也不会增加。 此外,由于可动元件不包括磁体,因此不必对可动元件施加磁化操作。 永磁体可以是彼此不同的磁极方向的一对,并且可以设置两对永磁体。 可以通过在永磁体周围设置磁阻部分来增加穿过磁极元件和铁构件的磁通量的数量。
    • 4. 发明授权
    • Linear actuator
    • 线性执行机构
    • US07476990B2
    • 2009-01-13
    • US12106392
    • 2008-04-21
    • Hiroshi NakagawaKazumichi KatoToshio MikiMinoru MaedaTakashi FukunagaKozo FurutaniToshiya Sugimoto
    • Hiroshi NakagawaKazumichi KatoToshio MikiMinoru MaedaTakashi FukunagaKozo FurutaniToshiya Sugimoto
    • H02K33/16H02K33/00F04B17/04
    • H01F7/1615H01F7/081H01F7/122H02K7/085H02K21/44H02K33/16H02K41/033
    • An object of the present invention is to provide a linear actuator in which reliability is improved, and performance is also easily improved. The present invention provides a linear actuator including a stator, a movable element having an iron member, and being reciprocatable with respect to the stator, a permanent magnet fixed to the stator so as to be opposed to the iron member, and a coil fixed to the stator. Because both the coil and the permanent magnet are fixed to the stator, electrical current does not have to be supplied to the movable element, and the feeder lines connected to the coil will not be broken due to the movement of the movable element. In addition, the weight of the movable element will not be increased even when the weigh of the permanent magnet is increased in order to obtain high magnetic flux density for improvement in performance. Moreover, because the movable element does not include a magnet, a magnetizing operation does not have to be applied to the movable element. The permanent magnets may be a pair in which the directions the magnetic poles thereof differ from each other, and two pairs of permanent magnets may be provided. The number of magnetic fluxes that run through the magnetic pole elements and the iron member can be increased by providing a magnetic reluctance section around the permanent magnets.
    • 本发明的目的是提供一种可靠性提高的线性致动器,并且性能也容易提高。 本发明提供了一种线性致动器,其包括定子,具有铁构件的可移动元件,并且能够相对于定子往复运动;固定到定子上以与铁构件相对的永磁体,以及固定到 定子。 由于线圈和永磁体均固定在定子上,所以不必向可动元件供电,并且由于可移动元件的移动而连接到线圈的馈线不会被破坏。 此外,为了提高性能,为了获得高的磁通密度,即使永磁体的重量增加,可移动元件的重量也不会增加。 此外,由于可动元件不包括磁体,因此不必对可动元件施加磁化操作。 永磁体可以是彼此不同的磁极方向的一对,并且可以设置两对永磁体。 可以通过在永磁体周围设置磁阻部分来增加穿过磁极元件和铁构件的磁通量的数量。
    • 5. 发明申请
    • Linear actuator
    • 线性执行机构
    • US20050057101A1
    • 2005-03-17
    • US10497678
    • 2002-11-26
    • Hiroshi NakagawaKazumichi KatoToshio MikiMinoru MaedaTakashi FukunagaKozo FurutaniToshiya Sugimoto
    • Hiroshi NakagawaKazumichi KatoToshio MikiMinoru MaedaTakashi FukunagaKozo FurutaniToshiya Sugimoto
    • H01F7/08H01F7/122H01F7/16H02K21/44H02K33/00H02K33/02H02K33/16H02K41/03H02K41/00
    • H01F7/1615H01F7/081H01F7/122H02K7/085H02K21/44H02K33/16H02K41/033
    • An object of the present invention is to provide a linear actuator in which reliability is improved, and performance is also easily improved. The present invention provides a linear actuator including a stator, a movable element having an iron member, and being reciprocatable with respect to the stator, a permanent magnet fixed to the stator so as to be opposed to the iron member, and a coil fixed to the stator. Because both the coil and the permanent magnet are fixed to the stator, electrical current does not have to be supplied to the movable element, and the feeder lines connected to the coil will not be broken due to the movement of the movable element. In addition, the weight of the movable element will not be increased even when the weigh of the permanent magnet is increased in order to obtain high magnetic flux density for improvement in performance. Moreover, because the movable element does not include a magnet, a magnetizing operation does not have to be applied to the movable element. The permanent magnets may be a pair in which the directions the magnetic poles thereof differ from each other, and two pairs of permanent magnets may be provided. The number of magnetic fluxes that run through the magnetic pole elements and the iron member can be increased by providing a magnetic reluctance section around the permanent magnets.
    • 本发明的目的是提供一种可靠性提高的线性致动器,并且性能也容易提高。 本发明提供了一种线性致动器,其包括定子,具有铁构件的可移动元件,并且能够相对于定子往复运动;固定到定子上以与铁构件相对的永磁体,以及固定到 定子。 由于线圈和永磁体均固定在定子上,所以不必向可动元件供电,并且由于可移动元件的移动而连接到线圈的馈线不会被破坏。 此外,为了提高性能,为了获得高的磁通密度,即使永磁体的重量增加,可移动元件的重量也不会增加。 此外,由于可动元件不包括磁体,因此不必对可动元件施加磁化操作。 永磁体可以是彼此不同的磁极方向的一对,并且可以设置两对永磁体。 可以通过在永磁体周围设置磁阻部分来增加穿过磁极元件和铁构件的磁通量的数量。
    • 6. 发明授权
    • Motor driving apparatus, brushless motor, and method for driving the same
    • 电机驱动装置,无刷电动机及其驱动方法
    • US07746014B2
    • 2010-06-29
    • US11853298
    • 2007-09-11
    • Minoru Maeda
    • Minoru Maeda
    • H02P6/08
    • H02P6/06H02P6/08Y02P80/116
    • A motor driving apparatus has first, second, and third positive-side driving transistors having drains which are supplied with a power supply voltage, first, second, and third negative-side driving transistors having sources which are grounded and drains which are connected to sources of the first, second, and third positive-side driving transistors, respectively, a power supply monitoring circuit which monitors the power supply voltage and outputs a driving mode switching signal which has a first value if the power supply voltage is not less than a predetermined value and has a second value if the power supply voltage is less than the predetermined value, and an output PWM control section which switches a mode of driving from synchronous rectification PWM driving to one-way PWM driving on the basis of a change of the driving mode switching signal from the second value to the first value.
    • 电机驱动装置具有第一,第二和第三正侧驱动晶体管,其具有供给电源电压的漏极,第一,第二和第三负侧驱动晶体管具有接地源和漏极,源极与源极连接 分别具有第一,第二和第三正侧驱动晶体管的电源监视电路,其监视电源电压并输出如果电源电压不小于预定值的驱动模式切换信号,该驱动模式切换信号具有第一值 并且如果电源电压小于预定值则具有第二值;以及输出PWM控制部分,其基于驱动的变化将同步整流PWM驱动的驱动模式切换到单向PWM驱动 模式切换信号从第二值到第一值。
    • 9. 发明授权
    • Seat having seating face made of sheet resilient material
    • 具有由片弹性材料制成的座面的座椅
    • US06375269B1
    • 2002-04-23
    • US09554867
    • 2000-05-19
    • Minoru MaedaTomomi ShojiTsutomu MatsuzakiNaohiro TakahashiMasashi IshiiTsutomu Ao
    • Minoru MaedaTomomi ShojiTsutomu MatsuzakiNaohiro TakahashiMasashi IshiiTsutomu Ao
    • A47C3102
    • B60N2/72A47C7/282A47C31/023B60N2/58B60N2/5825
    • A seat having a seating face made of sheet resilient material is assembled from a seat frame comprising a substantially quadrilateral frame body, the sheet resilient material forming the seating face, a pad member forming a largely rising bank, and a skin material enclosing the pad member, wherein the sheet resilient material is stretched within a frame body of the seat frame, one end of the skin material is abutted against and fixed on the frame body of the seat frame, the pad member is assembled outside the seat frame, the skin material covers outside of the pad member from the one end which is abutted against and fixed on the frame body of the seat frame, and the other end is wound and stopped around a back of the seat frame, a bank which rises larger than the surface position of the seating face made of the sheet resilient material which is stretched within the frame of the seat frame is formed, and the bank is assembled as a strong bank with a simple structure, and the pad member prevents the seat frame from touching a sitting passenger so that the sitting passenger should not feel a sense of incongruity.
    • 具有由弹性弹性材料构成的座面的座椅由包括大致四边形框架体的座椅框架组装,形成座面的片材弹性材料,形成大量上升的堤的衬垫构件以及包围衬垫构件的表层材料 其特征在于,所述片材弹性材料在所述座椅框架的框架体内被拉伸,所述表皮材料的一端抵接并固定在所述座椅框架的框架体上,所述衬垫构件组装在所述座椅框架的外部, 从抵接并固定在座椅框架的框体上的一端覆盖垫构件的外侧,另一端围绕座椅框架的后部缠绕并停止,该堤岸比表面位置大 形成由在座椅框架的框架内拉伸的片状弹性材料制成的座面,并且该组组装成具有简单结构的强力组,并且衬垫构件 防止座椅框架接触坐着的乘客,使坐乘客不应感到不协调感。