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公开(公告)号：US5486054A
公开(公告)日：1996-01-23
申请号：US304545
申请日：1994-09-12
CPC分类号： F16C19/163 , F16C17/08 , F16C19/12 , H02K7/081 , F16H2057/0213 , H02K2205/03 , H02K2213/09
摘要： A bearing system in a motor for a floppy disk drive (FDD) apparatus includes a protective cap mounted to one side of the motor, a first pivot bearing arranged movable to and from the protective cap in an axial direction of a rotary shaft, a thrust spring provided for urging the first pivot bearing in the axial direction of the rotary shaft, the rotary shaft having a rotor fixedly mounted thereto and rotatably supported at one end by the first pivot bearing and at the other end by a second pivot bearing mounted to a base for installation of the motor, and an alignment bushing arranged through which the rotary shaft of the motor extends without direct contact and closely fitted into a positioning hole provided in a plate to which the motor is secured. The rotary shaft remains not in direct contact with (spaced apart from) the alignment bushing and, acting as a leadscrew, can thus rotate at a higher accuracy, eliminating intrinsic drawbacks of the FDD motor. In rotation, a thrust is exerted across the first pivot bearing in the motor to the rotary shaft and such wearing properties as between the thrust spring and the ball in the conventional system needs not to be accounted for. Also, the thrust will be lessened by a combination of the base portion of the first pivot bearing and the protective cap which both are made of low-cost synthetic resin.
摘要翻译： 用于软盘驱动器（FDD）装置的电动机中的轴承系统包括安装在电动机的一侧的保护帽，第一枢转轴承，其可沿旋转轴的轴向方向移动到保护帽和从保护帽的轴向方向移动，推力 弹簧，其设置用于沿着旋转轴的轴向推动第一枢转轴承，旋转轴具有固定地安装在其上的转子，并且在一端由第一枢转轴承可旋转地支撑，另一端由安装到第一枢转轴承的第二枢转轴承 电机的安装基座和布置的对准衬套，马达的旋转轴通过该套筒直接接触并紧密地配合到设置在电机固定到的板上的定位孔中。 旋转轴保持不与对准衬套直接接触（间隔开），并且作为丝杠可以以更高的精度旋转，消除了FDD电动机的内在缺陷。 在旋转中，将电动机中的第一枢转轴承的推力施加到旋转轴，并且不需要考虑常规系统中的推力弹簧和球之间的这种磨损特性。 此外，通过第一枢转轴承的基部和保护盖的组合，两者都由低成本合成树脂制成，推力将减小。
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公开(公告)号：US09236774B2
公开(公告)日：2016-01-12
申请号：US14003291
申请日：2012-02-21
CPC分类号： H02K5/04 , B60L11/007 , B60L2200/12 , B62K11/00 , B62M6/55 , H02K1/185 , H02K3/28 , H02K3/38 , H02K15/16 , Y02T10/641
摘要： A driving unit includes a stator, a housing including a tubular section to accommodate the stator, a cover coupled to the housing to block an upper opening of the tubular section, and a bent wire rod defined by a wire to press the stator against the tubular section, the bent wire rod being arranged between a top surface of the stator and a rear surface of the cover while being compressingly deformed along an axis of the stator. The bent wire rod has substantially annular shape with an opened portion when seen along the axis, and includes projections projecting upward along the axis and depressions projecting downward along the axis being arranged alternately and successively. An elastic force from the bent wire rod causes the stator to receive a downward force along the axis. The stator is pressed against the tubular section to hold the stator in the housing.
摘要翻译： 驱动单元包括定子，壳体，其包括用于容纳定子的管状部分，联接到壳体以阻挡管状部分的上部开口的盖子，以及由线限定的弯曲线材，以将定子压靠在管状部分上 所述弯曲线材布置在所述定子的顶表面和所述盖的后表面之间，同时沿着所述定子的轴线被压缩变形。 弯曲的线材在沿着轴线观察时具有大致环形的开口部，并且包括沿着轴向上突出的突起，并且沿轴线向下突出的凹陷被交替地连续布置。 来自弯曲线材的弹性力使得定子沿轴线接收向下的力。 定子被压靠在管状部分上以将定子保持在壳体中。
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公开(公告)号：US20130342074A1
公开(公告)日：2013-12-26
申请号：US14003295
申请日：2012-02-21
IPC分类号： H02K3/00
CPC分类号： H02K3/00 , B60L50/20 , B60L2200/12 , H02K1/185 , H02K7/14 , Y02T10/641
摘要： A driving unit includes a stator, a housing, and a spring pin. The housing includes a tubular section and a plate section. The tubular section accommodates the stator and includes a first groove on an inner wall thereof. The plate section has a flat plate shape orthogonal or substantially orthogonal to a central axis of the tubular section, and projects from an outer surface of the tubular section. The first groove is disposed in a peripheral direction of the tubular section within an area facing a joining portion across the central axis, wherein the joining portion is a portion connecting the tubular section to the plate section.
摘要翻译： 驱动单元包括定子，壳体和弹簧销。 壳体包括管状部分和板部分。 管状部容纳定子并且在其内壁上包括第一凹槽。 板部具有与管状部的中心轴正交或大致正交的平板状，从管状部的外表面突出。 所述第一槽沿着所述管状部的周向配置在与所述中心轴线相对的接合部的区域内，其中，所述接合部是将所述管状部连接到所述板部的部分。
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公开(公告)号：US06909209B2
公开(公告)日：2005-06-21
申请号：US10825274
申请日：2004-04-15
摘要： A stepping motor comprises a rotor assembly and a stator assembly. The stator assembly includes first and second stator units arranged horizontally on a same plane. Each stator unit is composed of: upper and lower stator yokes, which are shaped substantially semi-annular, arranged squarely opposite to each other in parallel, each have a plurality of pole teeth formed along its inner circumference so as to surround the rotor assembly, and which are coupled to each other with their respective pole teeth opposing each other so as to intermesh; a coil for exciting, wound rectangularly, and having its axis located outside the rotor assembly so as to be sandwiched between the upper and lower stator yokes; and a spacer shaped substantially in rectangular parallelepiped, oriented parallel to the axial direction of the rotor assembly, and inserted through the coil.
摘要翻译： 步进马达包括转子组件和定子组件。 定子组件包括在同一平面上水平布置的第一和第二定子单元。 每个定子单元包括：上和下定子轭，其形状基本上是半环形的，平行地彼此正交地相对设置，每个具有沿着其内圆周形成的多个极齿，以围绕转子组件， 并且其彼此相对地彼此相对地相互联接，以便互相啮合; 线圈，用于激发，缠绕成矩形，并且其轴线位于转子组件外部，以夹在上和下定子轭之间; 以及基本上长方体形状的间隔件，其平行于转子组件的轴向定向并且插入通过线圈。
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15.发明授权公开(公告)号：US06822351B2
公开(公告)日：2004-11-23
申请号：US10655414
申请日：2003-09-04
IPC分类号： H02K3700
CPC分类号： H02K37/14
摘要： A low-profile stepping motor has a stator assembly structured such that first and second coil units are disposed flush with each other horizontally and are sandwiched between upper and lower stator yoke pieces each comprising first and second stator yokes which are punched out integrally with each other, are shaped symmetrically, and which each have a plurality of pole teeth along its semi-circular inner circumference. The upper and lower stator yoke pieces are fixedly put together by means of two studs lodged fittingly inside respective bobbins of the first and second coil units such that the studs have their both ends tightly engaging with holes formed in the upper and lower stator yoke pieces, whereby the coil units are surely held between the upper and lower stator yoke pieces.
摘要翻译： 薄型步进电机具有定子组件，其构造为使得第一和第二线圈单元彼此水平地相互平齐地设置并夹在上和下定子磁轭之间，每个包括彼此一体冲压的第一和第二定子磁轭 形成对称，并且其沿着其半圆形内圆周具有多个极齿。 上下定子轭片通过安装在第一和第二线圈单元的相应线轴内的两个螺柱固定地放置在一起，使得螺柱的两端与形成在上下定子轭体中的孔紧密接合， 从而线圈单元可靠地保持在上下定子轭片之间。
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16.发明授权公开(公告)号：US06812599B2
公开(公告)日：2004-11-02
申请号：US10672263
申请日：2003-09-26
IPC分类号： H02K3714
摘要： A low-profile stepping motor comprises: a first stator unit including first upper and lower stator yokes each having a plurality of pole teeth which are formed along its semicircular inner circumference, and a first coil unit fixedly sandwiched between the first upper and lower stator yokes; a second stator unit including second upper and lower stator yokes formed as one piece integrally with the first upper and lower stator yokes, respectively, and each having a plurality of pole teeth which are formed along its semicircular inner circumference, and a second coil unit fixedly sandwiched between the second upper and lower stator yokes; a rotor assembly rotatably disposed in a circular open space defined by the pole teeth of the first and second stator units; and a spacer block disposed between the upper and lower stator yokes and adapted to surround the first and second coil units and the pole teeth.
摘要翻译： 一种薄型步进电动机包括：第一定子单元，包括第一上定子轭和下定子轭，每个具有沿着其半圆形内周形成的多个极齿;以及第一线圈单元，固定地夹在第一上下定子线圈之间 ; 第二定子单元，分别包括与第一上下定子轭一体地形成为一体的第二上定子轭和下定子轭，并且每个定子轭具有沿着其半圆内周形成的多个极齿，以及第二线圈单元， 夹在第二上下定子轭之间; 转子组件，其可旋转地设置在由所述第一和第二定子单元的极齿限定的圆形开放空间中; 以及设置在所述上定子轭和所述下定子轭之间并适于围绕所述第一和第二线圈单元和所述极齿的间隔块。
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公开(公告)号：US5777413A
公开(公告)日：1998-07-07
申请号：US580255
申请日：1995-12-28
CPC分类号： F16C19/163 , F16C17/08 , F16C19/12 , G11B19/2009 , F16C2370/12 , F16C2380/27
摘要： A bearing installation for a Floppy Disk Driver motor which is simple in structure and high in accuracy of a rotating action of a rotary shaft, thus hardly impairing the read and write characteristics of a Floppy Disk Driver device. A bearing installation for a Floppy Disk Driver motor includes a protective cap mounted to one side of the motor; a first pivot bearing arranged for free and axial movements on a rotary shaft of the motor relative to the protective cap; a thrust spring urging axially the first pivot bearing on the rotary shaft of the motor; the rotary shaft fixedly mounted on a rotor of the motor, and supported pivotally at one end by the first pivot bearing and at the other end by a second pivot bearing fixedly mounted on a platform on which the motor is installed; a lead screw joined to an outwardly extending portion of the rotary shaft from the motor; and a positioning bushing arranged through which the rotary shaft fixed to the motor extends without direct contact with and closely fitted into a positioning hole provided in a plate to which the motor is secured.
摘要翻译： 一种用于软盘驱动器电机的轴承装置，其结构简单并且旋转轴的旋转动作的精度高，因此难以损害软盘驱动器装置的读写特性。 用于软盘驱动器电机的轴承装置包括安装在电动机一侧的保护帽; 第一枢转轴承布置成相对于保护盖在马达的旋转轴上的自由和轴向运动; 推力弹簧，其沿电动机的旋转轴轴向推动第一枢转轴承; 所述旋转轴固定地安装在所述电动机的转子上，并且在一端由所述第一枢转轴承枢转地支撑，并且在另一端由固定地安装在其上安装所述电动机的平台的第二枢转轴承支撑; 从所述马达接合到所述旋转轴的向外延伸部分的导螺杆; 以及定位衬套，通过该定位衬套布置固定到电动机的旋转轴而不直接接触并紧密地配合到设置在电动机固定到的板中的定位孔中。
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公开(公告)号：US20080084131A1
公开(公告)日：2008-04-10
申请号：US11659845
申请日：2005-08-09
摘要： A stepping motor is provided and includes: a rotor; a stator comprising a stator yoke having pole teeth; and a molded case comprising a case body and a mounting flange. The case body is resin-molded such that outer faces of the pole teeth of the stator yoke are exposed, and the mounting flange is resin-molded integrally with the case body.
摘要翻译： 提供步进电机，包括：转子; 定子，其包括具有极齿的定子轭; 以及包括壳体和安装凸缘的模制壳体。 壳体被树脂模制，使得定子磁轭的极齿的外表面露出，并且安装凸缘与壳体一体地树脂模制。
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公开(公告)号：US07023115B2
公开(公告)日：2006-04-04
申请号：US10743854
申请日：2003-12-22
CPC分类号： F16C19/163 , F16C19/50 , F16C2380/27 , H02K5/1732 , H02K7/06 , H02K7/081 , H02K7/083
摘要： In a motor, a shaft passes through a magnet of a rotor and is fixed to the magnet by way of a rotor sleeve formed by resin-molding between the magnet and the shaft. A resin-molded boss is fixed to a front end of a stator, has a center hole, and defines an inner surface continuous from the center hole and beveled so as to obliquely face a front end of the rotor sleeve. A plurality of bearing balls are rotatably disposed between the front end of the rotor sleeve and the beveled inner surface of the boss, thereby constituting a ball bearing which rotatably supports the shaft. Thus, the shaft is prevented from bowing, whereby the motor achieves a high rotational accuracy of the shaft without an additional bearing attached separately.
摘要翻译： 在电动机中，轴穿过转子的磁体，并且通过在磁体和轴之间通过树脂模制形成的转子套筒固定到磁体。 树脂模制的凸台固定在定子的前端，具有中心孔，并且限定了与中心孔连续的内表面，并且倾斜地面向转子套筒的前端。 多个轴承滚珠可旋转地设置在转子套筒的前端和凸台的斜面内表面之间，从而构成可转动地支撑轴的滚珠轴承。 因此，防止轴弯曲，由此马达实现轴的高旋转精度，而没有单独附加的附加轴承。
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20.发明授权公开(公告)号：US06838792B2
公开(公告)日：2005-01-04
申请号：US10677205
申请日：2003-10-02
摘要： A low-profile stepping motor comprises: an upper twin-stator yoke plate composed of first and second upper stator yokes; a lower twin-stator yoke plate composed of first and second lower stator yokes; first and second coil units fixedly sandwiched between the upper and lower stator yoke plates so as to be arranged horizontally flush with each other; and a rotor assembly including a cylindrical magnet and disposed between the first and second coil units. In the stepping motor, one of the upper and lower twin-stator yoke plates is structured such that one half of its pole teeth partitioned in half by a predetermined datum line and open spaces each residing between two adjacent pole teeth of the other half are positioned symmetrically about the predetermined datum line, whereby the one twin-stator yoke plate can be used in common to the other twin-stator yoke plate.
摘要翻译： 低调步进马达包括：由第一和第二上定子轭构成的上双定子轭板; 由第一和第二下定子轭组成的下双定子轭板; 第一和第二线圈单元固定地夹在上定子轭板和下定子轭板之间，以便彼此水平地相对布置; 以及包括圆柱形磁体并设置在第一和第二线圈单元之间的转子组件。 在步进电动机中，上下双定子轭板之一被构造成使得其极齿的一半被分隔成预定的基准线，并且每个位于另一半的两个相邻极齿之间的开放空间被定位 对称地围绕预定的基准线，由此一个双定子轭板可以与另一个双定子轭板共同使用。
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