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公开(公告)号：US11233445B2
公开(公告)日：2022-01-25
申请号：US16599349
申请日：2019-10-11
申请人： Yilmaz Sozer , Yusuf Yasa
发明人： Yilmaz Sozer , Yusuf Yasa
摘要： An acoustic noise mitigation system for an electric machine includes one or more suspension members. The suspension members may include arcuate members that are positioned between a machine housing and a stator. During operation of the electric machine, the electromagnetic force frequency that is generated by the stator relative to a rotating rotor is able to be absorbed by the suspension members. As a result, acoustic noise generated by the electric machine is reduced.
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公开(公告)号：US20190356209A1
公开(公告)日：2019-11-21
申请号：US16063699
申请日：2016-12-15
发明人： Masaki YOKOYAMA
摘要： In the case of this motor device, tip parts (230) of first protrusion sections (23), which hold a stator core (60) from inside of a first case (21) in the direction of a rotational center axis line (LO) in conjunction with a second case (22), are tapered toward the stator core (60). Also, tip parts (240) of second protrusion sections (24), which hold the stator core (60) from inside of the second case (22) in the direction of the rotational center axis line (LO) in conjunction with the first case (21), are tapered toward the stator core (60). Thus, when the protruding lengths of the first protrusion sections (23) and the second protrusion sections (24) are set somewhat long in advance, the first protrusion sections (23) and the second protrusion sections (24) hold the stator core (60) in a state in which the tip parts (230, 240) are crushed.
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公开(公告)号：US20170149322A1
公开(公告)日：2017-05-25
申请号：US14950269
申请日：2015-11-24
申请人： Lin Engineering
发明人： Ted T. Lin , Harlan H. Nguyen
IPC分类号： H02K37/22
CPC分类号： H02K37/22
摘要： A stepper motor has a stator winding assembly with a permanent ring magnet located radially outside of electromagnetic windings for the stator poles. The permanent ring magnet remotely magnetizes a rotor seated by bearings on an axial shaft so as to rotate within the stator winding assembly, thereby freeing up space within the rotor for an internal damper. The rotor has a cylindrical damping weight enclosed within, but not fixed to, the rotor. The weight ideally has a rotational moment of inertia that substantially matches that of the rotor. The weight is elastically coupled to the rotor by a viscous material contained in the rotor and filling the space between the weight and the rotor and between the weight and the axial shaft. The viscosity of this material is selected such that motion of the weight is delayed, preferably so as to be substantially 180° out-of-phase with, but at the same frequency as, the stepping rotation of the rotor. The weight thereby serves as a counterweight to the rotor so as to cancel vibrations generated by stepping of the rotor.
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公开(公告)号：US5046154A
公开(公告)日：1991-09-03
申请号：US594470
申请日：1990-10-09
申请人： Daniel C. MacManus
发明人： Daniel C. MacManus
CPC分类号： H02K1/2733 , H02K1/2726 , H02K37/22 , H02K5/124 , Y10T29/49075
摘要： An armature and shaft assembly useful in gauges and stepper motors is encapsulated for ease in manufacture and diversity of application, the capsule being suitable for sealing in dampening fluids and for allowing magnetization of the armature after assembly of the capsule, providing protection against contamination by dust, etc.
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公开(公告)号：US4938325A
公开(公告)日：1990-07-03
申请号：US247067
申请日：1988-09-20
申请人： Hiroshi Nakagawa
发明人： Hiroshi Nakagawa
摘要： A vibration damping apparatus for a pulse motor having a movable member. The apparatus has a back plate fitted to the movable member of the pulse motor for serving as a base part of the apparatus, a first permanent magnet mounted on a flat plate portion of the back plate for transmitting movement of the motor to later stages of the vibration damping apparatus, and an inertia member disposed in opposed relation to the first permanent magnet and movable relative to the first permanent magnet in a plane parallel to the flat plate portion and having a second permanent magnet thereon magnetically coupled with the first permanent magnet, the inertia member having a natural frequency substantially equal to the natural frequency of the pulse motor without the inertia member.
摘要翻译： 一种用于具有可移动部件的脉冲电机的减震装置。 该装置具有安装在脉冲电机的可动部件上的背板，用作该装置的基座部分，安装在后板的平板部分上的第一永磁体，用于将马达的运动传递到 减震装置以及与第一永久磁铁相对设置并相对于第一永久磁铁在与平板部平行的平面中可移动并具有与第一永久磁铁磁耦合的第二永磁体的惯性构件， 惯性构件具有基本上等于没有惯性构件的脉冲电机的固有频率的固有频率。
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公开(公告)号：US4825983A
公开(公告)日：1989-05-02
申请号：US163109
申请日：1988-03-02
申请人： Motoyasu Nakanishi
发明人： Motoyasu Nakanishi
CPC分类号： H02K37/22 , F16F15/1485 , Y10T74/2123
摘要： An inertia damper having a mounting base to be mounted on a rotary shaft and an inertia weight component which is coupled to the mounting base through a vibration absorbing layer, the vibration absorbing layer being made of a gel material with a penetration valve of approximately 50 to 200. The inertia weight component is adhered to one surface of the vibration absorbing layer and the other surface of the vibration absorbing layer is adhered to the mounting base of the rotary shaft. A vibration wave generated at the rotary shaft side is dispersedly absorbed by deformation of gel material which forms the vibration absorbing layer and a vibratory component can be removed from a braking motion.
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公开(公告)号：US4800306A
公开(公告)日：1989-01-24
申请号：US36576
申请日：1987-04-10
申请人： Massimo Oberto
发明人： Massimo Oberto
CPC分类号： H02K37/22 , Y10T74/216
摘要： The device comprises an external inertia element which is fixed to a damping member which is coaxially fixed with respect to a shaft of a stepping motor, in such a way that it can rotate together therewith. The external inertia element comprises a metal mass in the form of an annulus of limited thickness. The damping member comprises a first circular flange to which the annulus is fixed, a second circular flange by means of which the device is fixed to the shaft and an annulus of elastomeric material connecting the two flanges. The materials and the dimensions of the device can be calculated, proportioned and pre-arranged in such a way that the device is compact but can stop oscillations of the stepping motor in a very short time. The device is particularly suited to damping the oscillations of a stepping motor which is used for example for positioning a printing member with respect to a print point or for positioning a recording head with respect to a magnetic disc.
摘要翻译： 该装置包括外部惯性元件，该外部惯性元件固定到相对于步进电机的轴同轴固定的阻尼构件，使得其可以一起旋转。 外部惯性元件包括具有有限厚度的环形形式的金属块。 阻尼构件包括固定有环空的第一圆形凸缘，第二圆形凸缘，通过该第二圆形凸缘将装置固定在轴上，以及连接两个凸缘的弹性材料的环形空隙。 装置的材料和尺寸可以以这样的方式被计算，成比例和预先布置，使得该装置是紧凑的，但是可以在非常短的时间内停止步进电机的振荡。 该装置特别适用于阻尼步进电机的振荡，该步进电机例如用于将打印部件相对于打印点定位或用于相对于磁盘定位记录头。
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公开(公告)号：US4598328A
公开(公告)日：1986-07-01
申请号：US493132
申请日：1983-05-09
申请人： Thomas P. Frangesh
发明人： Thomas P. Frangesh
摘要： To damp a stepper motor powered band drive for a disk drive, there is a relatively inexpensive, but efficient mechanical damper comprising a predetermined inertial mass which is concentrically coupled to the capstan of the band drive by an energy absorbing elastomer. The mass, its geometry, and the energy absorbing characteristics of the elastomer are selected to apply a dynamic force to the stepper motor which opposes and counteracts any unwanted oscillation of the stepper motor as the read/write head of the disk drive arrives at a selected data track. This damper is relatively free of potential contaminants and is, therefore, particularly attractive for Winchester disk drives.
摘要翻译： 为了阻止用于磁盘驱动器的步进电机驱动带驱动器，存在相对便宜但有效的机械阻尼器，其包括预定的惯性质量，其通过能量吸收弹性体同心耦合到带驱动器的绞盘。 弹性体的质量，其几何形状和能量吸收特性被选择为向步进电机施加动态力，该步骤电动机在与磁盘驱动器的读/写头到达所选择的位置时相反并抵消步进电机的任何不期望的振荡 数据轨 这种阻尼器相对没有潜在的污染物，因此对于温彻斯特磁盘驱动器特别有吸引力。
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公开(公告)号：US4049985A
公开(公告)日：1977-09-20
申请号：US695460
申请日：1976-06-14
申请人： Roland Sudler
发明人： Roland Sudler
CPC分类号： F16F15/1485 , F16F15/18 , H02K37/22 , H02K7/106 , Y10T74/2132
摘要： A device for damping the natural oscillations of the rotor of a stepper motor. A permanent magnet is fixed to the rotor and magnetically coupled with an inertia mass constructed of material with distinct hysteresis. The rotor is damped by conversion of mechanical momentum to hysteresis loss.
摘要翻译： 用于阻尼步进马达的转子的自然振荡的装置。 永久磁铁固定在转子上，与由具有不同滞后性的材料构成的惯性体磁耦合。 转子受到机械动量转换为磁滞损耗的阻尼。
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公开(公告)号：US3842332A
公开(公告)日：1974-10-15
申请号：US29478772
申请日：1972-10-04
发明人： HEINE G , BORGONOVI B
摘要： In the system disclosed, five stator windings of a stepping motor are connected in series with each other to form a loop having five connecting points. Control means switch five transfer switches, each having an armature connected to a connecting point, between a positive and negative potential so as simultaneously to energize four windings and short-circuit the fifth. The control means then shifts the short-circuited condition to other windings in cyclical sequence while energizing the remaining four windings at any time.
摘要翻译： 在所公开的系统中，步进电动机的五个定子绕组彼此串联连接以形成具有五个连接点的环。 控制装置将五个转换开关切换成各自具有连接到连接点的电枢之间的正电位和负电位，从而同时激励四个绕组并使第五个绕组短路。 然后，控制装置以周期性顺序将短路条件转移到其它绕组，同时在任何时间给剩余的四个绕组通电。
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