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1.发明申请Motor With Permanent Magnets and Method of Manufacturing Power Tool With Same 审中-公开具有永久磁铁的电动机和与之相同的制造电动工具的方法公开(公告)号：US20110298313A1
公开(公告)日：2011-12-08
申请号：US13112136
申请日：2011-05-20
申请人： Stephen Osborne , Colin Crosby , Sankarshan Murthy , Hung T. Du , Earl M. Ortt
发明人： Stephen Osborne , Colin Crosby , Sankarshan Murthy , Hung T. Du , Earl M. Ortt
IPC分类号： H02K7/14
摘要： A permanent magnet electric motor has a stator and a rotor. The stator has a stator housing with at least a North pole and a South pole, each pole including permanent magnets affixed to an inner surface of the stator housing, where at least two of the magnets within a pole have dissimilar characteristics, e.g., different widths or different grades of demagnetization resistance.
摘要翻译： 永磁电动机具有定子和转子。 定子具有至少具有北极和南极的定子壳体，每个极包括固定在定子壳体的内表面上的永久磁体，其中极内的至少两个磁体具有不同的特性，例如不同的宽度 或不同等级的消磁阻力。
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2.发明申请公开(公告)号：US20100033036A1
公开(公告)日：2010-02-11
申请号：US12443191
申请日：2007-10-12
申请人： Earl M. Ortt , Hung T. Du , Sankarshan Murthy
发明人： Earl M. Ortt , Hung T. Du , Sankarshan Murthy
CPC分类号： H02K1/17 , H02K1/2786 , H02K15/03 , H02K23/04 , Y10T29/49009
摘要： An electric motor has a rotor and a stator. The rotor or the stator has arced permanent magnets that have essentially the same inner radius (IR) and outer radius (OR). In an aspect, the stator has a stator housing having a plurality of poles. Each pole includes a plurality of flat magnets affixed to an inner surface of the stator housing. In an aspect, flats on the outside of the stator housing key the stator assembly in a power tool housing. In an aspect, flat magnets are pre-magnetized, pre-assembled with alternating magnetic polarities, inserted into a stator housing, and remagnetized to a final, desired magnetic polarity configuration. In an aspect, pre-magnetized magnets and unmagnetized magnets are pre-assembled with unmagnetized magnets between magnetized magnets, the pre-assembled magnets inserted into a stator housing, and the unmagnetized magnets magnetized to a final, desired magnetic polarity configuration. In an aspect, pre-magnetized magnets are inserted between anchors inwardly extending from an inner surface of a stator housing with the anchors retaining each magnet placed in the stator housing between anchors from being angularly displaced by subsequently inserted magnets. In an aspect, pre-magnetized magnets are inserted in recesses in an inner surface of a stator housing with the recesses retaining each magnet placed in the stator housing between anchors from being angularly displaced by subsequently inserted magnets. In an aspect, each pole has at least three magnets, at least one of the magnets being thinner than the other magnets. In an aspect, the outer most magnets are made of magnetic material that is more resistant to demagnetization than at least one of the other magnets. In an aspect, the magnets of each pole are unevenly spaced over the pole In an aspect, a power tool includes such an electric motor.
摘要翻译： 电动机具有转子和定子。 转子或定子具有具有基本相同的内半径（IR）和外半径（OR）的弧形永磁体。 在一方面，定子具有具有多个极的定子壳体。 每个极包括固定在定子壳体的内表面上的多个扁平磁体。 在一个方面，定子外壳外侧的平面将定子组件锁定在动力工具壳体中。 在一方面，扁平磁体被预先磁化，预先组装成具有交替的磁极性，插入定子壳体中，并且被重新磁化成最终期望的磁极性配置。 在一方面，预磁化磁体和非磁化磁体在磁化磁体之间预先组装有非磁化磁体，预组装的磁体插入定子壳体中，而磁化的磁体磁化到最终期望的磁极性结构。 在一个方面，预磁化的磁体被插入到从定子壳体的内表面向内延伸的锚固件之间，锚固件将放置在定子壳体中的每个磁体保持在锚固件之间，以便由随后插入的磁体进行角度位移。 在一方面，预磁化的磁体被插入定子壳体的内表面中的凹槽中，其中保持放置在定子壳体中的每个磁体的凹槽不会被随后插入的磁体角位移。 在一个方面，每个极具有至少三个磁体，至少一个磁体比其它磁体薄。 在一个方面，最外面的磁体由比其它磁体中的至少一个更能抵抗退磁的磁性材料制成。 在一方面，每个极的磁体在极点上不均匀地间隔开。在一个方面，电动工具包括这种电动机。
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公开(公告)号：US08584770B2
公开(公告)日：2013-11-19
申请号：US12729867
申请日：2010-03-23
摘要： A power tool with a motor, a housing, a transmission, an output spindle, a front bearing and a rear bearing. The motor has an output shaft. The transmission is disposed in the housing and receives a rotary input from the output shaft. The transmission includes an input planetary stage, which has an input planet carrier, and an output planetary stage. The output spindle is driven by the transmission and has a first end, which extends at least partly through the input planetary stage, and a second end opposite the first end. The front bearing is disposed between the output spindle and the housing to support the second end of the output spindle for rotation about the spindle axis. The rear bearing indirectly supports the first end of the output spindle in the housing for rotation about the spindle axis.
摘要翻译： 具有电动机，壳体，变速器，输出主轴，前轴承和后轴承的电动工具。 电机有一个输出轴。 变速器设置在壳体中并从输出轴接收旋转输入。 变速器包括输入行星级，其具有输入行星架和输出行星级。 输出主轴由变速器驱动，并且具有至少部分地延伸穿过输入行星级的第一端和与第一端相对的第二端。 前轴承设置在输出主轴和壳体之间，以支撑输出主轴的第二端以围绕主轴轴线旋转。 后轴承间接地支撑壳体中的输出主轴的第一端，以围绕主轴轴线旋转。
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公开(公告)号：US20130126201A1
公开(公告)日：2013-05-23
申请号：US13298967
申请日：2011-11-17
CPC分类号： B23B45/008 , B23B39/00 , B23B2260/07 , B23B2260/076 , B25F5/001 , F16H27/06 , F16H35/02 , Y10T74/19555 , Y10T74/19884
摘要： A power tool includes a housing, a motor contained in the housing, an output shaft extending proximate a front of the housing, an end effector coupled to the output shaft and configured to hold an accessory; and a transmission disposed in the housing between the motor and the output shaft. The transmission includes a variable ratio gear set configured to transmit power from the motor to the output shaft at a substantially variable speed ratio. The transmission may further include a constant ratio gear set configured to transmit power from the motor at a substantially constant speed ratio. The transmission may be automatically or manually shiftable between a first mode where it transmits power through the constant speed ratio gear set and a second mode where it transmits power through the variable speed ratio gear set.
摘要翻译： 电动工具包括壳体，容纳在壳体中的电动机，靠近壳体前部延伸的输出轴，连接到输出轴并构造成保持附件的端部执行器; 以及设置在电机和输出轴之间的壳体中的变速器。 变速器包括可变比齿轮组，其被配置为以基本上可变的速比从电动机向输出轴传递动力。 所述变速器还可以包括恒定比例齿轮组，其被配置为以基本上恒定的速度比从所述马达传递动力。 变速器可以在其通过恒速比齿轮组传递动力的第一模式和通过可变速比齿轮组传递动力的第二模式之间自动或手动地移动。
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公开(公告)号：US08286723B2
公开(公告)日：2012-10-16
申请号：US13120873
申请日：2011-01-07
申请人： Daniel Puzio , Craig Schell , Daniele Brotto , Andrew Seman, Jr. , Scott Eshleman , Joseph Kelleher , Sankarshan Murthy , Gabriel Concari , Thomas Bodine , Michael Haupt , Curtis Watenpaugh
发明人： Daniel Puzio , Craig Schell , Daniele Brotto , Andrew Seman, Jr. , Scott Eshleman , Joseph Kelleher , Sankarshan Murthy , Gabriel Concari , Thomas Bodine , Michael Haupt , Curtis Watenpaugh
IPC分类号： E21B15/04
CPC分类号： B25B23/14 , B25B23/0064 , B25F5/00
摘要： A power tool includes an output shaft configured to rotate about a longitudinal axis, a motor drivably connected to the output shaft to impart rotary motions thereto, and a rotational motion sensor spatially separated from the output shaft and operable to determine the user-imparted rotational motion of the power tool with respect to the longitudinal axis. A controller is electrically connected to the rotational motion sensor and the motor. The controller determines angular velocity of the power tool about the axis, rotational displacement of the power tool about the axis, and/or a direction of the rotational displacement using input from the rotational motion sensor. The controller then controls the motor according to the angular velocity, the rotational displacement, and/or the direction of the rotational displacement.
摘要翻译： 一种动力工具包括一个输出轴，该输出轴构造成围绕纵向轴线旋转，一个可驱动地连接到输出轴的马达，以向其提供旋转运动;以及旋转运动传感器，其空间上与输出轴分离并且可操作以确定用户所承受的旋转运动 相对于纵向轴线的动力工具。 控制器电连接到旋转运动传感器和电动机。 控制器使用来自旋转运动传感器的输入来确定电动工具围绕轴线的角速度，电动工具围绕轴线的旋转位移和/或旋转位移的方向。 然后，控制器根据角速度，旋转位移和/或旋转位移的方向来控制马达。
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公开(公告)号：US20110303432A1
公开(公告)日：2011-12-15
申请号：US13154712
申请日：2011-06-07
摘要： A power tool that includes a housing assembly, a motor received in the housing assembly, a trigger, an output spindle, a transmission and a bearing. The transmission is received in the housing assembly and transmits rotary power between the motor and the output spindle. The transmission has an output planetary stage with an output planet carrier. The transmission also has a member that is axially movable between a first position, which causes the transmission to operate in a first speed ratio, and a second position in which the transmission operates in a second speed ratio that is different than the first speed ratio. The bearing is disposed radially between and engages both the housing assembly and the output planet carrier. The output spindle is at least partially received into the output planet carrier such that the bearing indirectly supports the output spindle.
摘要翻译： 一种电动工具，其包括壳体组件，容纳在壳体组件中的电动机，触发器，输出主轴，变速器和轴承。 传动装置接收在壳体组件中，并在电机和输出主轴之间传输旋转动力。 变速器具有输出行星架，输出行星架。 变速器还具有可在第一位置和第二位置之间轴向移动的构件，该第一位置使得变速器以第一速度比运行;第二位置，变速器以与第一速度比不同的第二速比操作。 轴承径向设置在壳体组件和输出行星架之间并与之接合。 输出主轴至少部分地被接收到输出行星架中，使得轴承间接支撑输出主轴。
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公开(公告)号：US20110278966A1
公开(公告)日：2011-11-17
申请号：US13112141
申请日：2011-05-20
申请人： Stephen Osborne , Colin Crosby , Sankarshan Murthy , Hung T. Du , Earl M. Ortt
发明人： Stephen Osborne , Colin Crosby , Sankarshan Murthy , Hung T. Du , Earl M. Ortt
IPC分类号： H02K1/17
摘要： A permanent magnet electric motor has a stator and a rotor. The stator has a stator housing with at least a North pole and a South pole. Each pole includes at least two permanent magnets arranged on an inner surface of the stator housing near the pole tips and an overmold of magnetic material molded around the permanent magnets and over the inner surface of the stator between the permanent magnets. Alternatively, an overmold of magnetic material may be provided over an inner surface of the stator, where the thickness of the overmold layer is greater near tips of each pole than in the middle portion of each pole.
摘要翻译： 永磁电动机具有定子和转子。 定子具有至少具有北极和南极的定子壳体。 每个极包括至少两个永磁体，其布置在靠近极尖的定子壳体的内表面上，以及围绕永磁体模制的磁性材料的包覆成型体，并且在永久磁铁之间的定子的内表面上。 或者，可以在定子的内表面上提供磁性材料的包覆模制，其中二次模制层的厚度在每个极的尖端附近比在每个极的中间部分更大。
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公开(公告)号：US08887831B2
公开(公告)日：2014-11-18
申请号：US13298967
申请日：2011-11-17
CPC分类号： B23B45/008 , B23B39/00 , B23B2260/07 , B23B2260/076 , B25F5/001 , F16H27/06 , F16H35/02 , Y10T74/19555 , Y10T74/19884
摘要： A power tool includes a housing, a motor contained in the housing, an output shaft extending proximate a front of the housing, an end effector coupled to the output shaft and configured to hold an accessory; and a transmission disposed in the housing between the motor and the output shaft. The transmission includes a variable ratio gear set configured to transmit power from the motor to the output shaft at a substantially variable speed ratio. The transmission may further include a constant ratio gear set configured to transmit power from the motor at a substantially constant speed ratio. The transmission may be automatically or manually shiftable between a first mode where it transmits power through the constant speed ratio gear set and a second mode where it transmits power through the variable speed ratio gear set.
摘要翻译： 电动工具包括壳体，容纳在壳体中的电动机，靠近壳体前部延伸的输出轴，连接到输出轴并构造成保持附件的端部执行器; 以及设置在电机和输出轴之间的壳体中的变速器。 变速器包括可变比齿轮组，其被配置为以基本上可变的速比从电动机向输出轴传递动力。 所述变速器还可以包括恒定比例齿轮组，其被配置为以基本上恒定的速度比从所述马达传递动力。 变速器可以在其通过恒速比齿轮组传递动力的第一模式和通过可变速比齿轮组传递动力的第二模式之间自动或手动地移动。
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公开(公告)号：US08631880B2
公开(公告)日：2014-01-21
申请号：US12764714
申请日：2010-04-21
申请人： Sankarshan Murthy , Qiang Zhang , Daniel Puzio , James T. Rill
发明人： Sankarshan Murthy , Qiang Zhang , Daniel Puzio , James T. Rill
IPC分类号： B25D15/02
CPC分类号： B25B21/023 , Y10T29/49963
摘要： A power tool with a housing, a motor, a transmission, a spindle and an impact mechanism. The motor has an output shaft that drives the transmission. The transmission has a plurality of planet gears, a planet carrier journally supporting the planet gears for rotation about an axis, and a ring gear that is in meshing engagement with the planet gears. The impact mechanism has a plurality of anvil lugs, an impactor and an impactor spring. The anvil lugs are coupled to the ring gear and are not engaged by the planet gears. The impactor is mounted to pivot about the spindle and has a plurality of hammer lugs. The impactor spring biases the impactor toward the ring gear to cause the hammer lugs to engage the anvil lugs. A power tool having an impact mechanism with an external adjusting member that can be moved to vary a trip torque of the impact mechanism is also provided.
摘要翻译： 具有外壳，电机，变速箱，主轴和冲击机构的电动工具。 电机具有驱动变速器的输出轴。 变速器具有多个行星齿轮，行星架支撑行星齿轮以围绕轴线旋转，以及与行星齿轮啮合的环形齿轮。 冲击机构具有多个砧座，冲击器和冲击弹簧。 砧座与环形齿轮联接，并不与行星齿轮啮合。 冲击器被安装成围绕主轴枢转并且具有多个锤片。 冲击器弹簧将冲击器偏压到环形齿轮，以使锤片接触砧座。 还提供一种具有冲击机构的电动工具，其具有能够移动以改变冲击机构的跳闸扭矩的外部调节构件。
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公开(公告)号：US20110232930A1
公开(公告)日：2011-09-29
申请号：US12729867
申请日：2010-03-23
IPC分类号： B25F5/00 , B25B21/00 , B25B23/157
摘要： A power tool with a motor, a housing, a transmission, an output spindle, a front bearing and a rear bearing. The motor has an output shaft. The transmission is disposed in the housing and receives a rotary input from the output shaft. The transmission includes an input planetary stage, which has an input planet carrier, and an output planetary stage. The output spindle is driven by the transmission and has a first end, which extends at least partly through the input planetary stage, and a second end opposite the first end. The front bearing is disposed between the output spindle and the housing to support the second end of the output spindle for rotation about the spindle axis. The rear bearing indirectly supports the first end of the output spindle in the housing for rotation about the spindle axis.
摘要翻译： 具有电动机，壳体，变速器，输出主轴，前轴承和后轴承的电动工具。 电机有一个输出轴。 变速器设置在壳体中并从输出轴接收旋转输入。 变速器包括输入行星级，其具有输入行星架和输出行星级。 输出主轴由变速器驱动，并且具有至少部分地延伸穿过输入行星级的第一端和与第一端相对的第二端。 前轴承设置在输出主轴和壳体之间，以支撑输出主轴的第二端以围绕主轴轴线旋转。 后轴承间接地支撑壳体中的输出主轴的第一端，以围绕主轴轴线旋转。
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