公开(公告)号：US5172021A

公开(公告)日：1992-12-15

申请号：US725566

申请日：1991-07-03

申请人： Masahiro Takahashi ,  Hiroshi Makino ,  Tomoharu Nonaka ,  Teiji Sata ,  Daisuke Yoshino

发明人： Masahiro Takahashi ,  Hiroshi Makino ,  Tomoharu Nonaka ,  Teiji Sata ,  Daisuke Yoshino

IPC分类号： F16C39/06 ,  H02K1/18 ,  H02K5/16 ,  H02K7/09 ,  H02K16/02

CPC分类号： F16C32/044 ,  F16C32/0402 ,  H02K1/18 ,  H02K16/02 ,  H02K5/1677 ,  H02K7/09

摘要： An electric motor, in which the thrust bearing action is performed by the magnetic attraction forces induced between a annular stator core with toroidal coils and magnets confronting the stator core, includes at least a cup-shaped member with a central cylindrical portion opened at the center, the cup-shaped member serving as a magnet yoke and a seat on which an element to be driven by the motor is mounted, and a cylindrical rotary sleeve press-fitted in the central cylindrical portion. This construction contributes to a reduction of the weight, size and manufacturing cost of the motor.

摘要翻译： 一种电动机，其中通过在具有环形线圈的环形定子铁芯和与定子铁心相对的磁体之间引起的磁性吸引力进行推力轴承动作，包括至少一个具有在中心开口的中心圆柱形部分的杯形部件 用作磁轭的杯状部件和安装有由马达驱动的元件的座，以及压配合在中心圆筒部的圆筒状的旋转套筒。 这种结构有助于减小电动机的重量，尺寸和制造成本。

公开(公告)号：US5148069A

公开(公告)日：1992-09-15

申请号：US726368

申请日：1991-07-05

申请人： Tomoharu Nonaka ,  Hiroshi Makino ,  Masahiro Takahashi ,  Teiji Sata ,  Daisuke Yoshino

发明人： Tomoharu Nonaka ,  Hiroshi Makino ,  Masahiro Takahashi ,  Teiji Sata ,  Daisuke Yoshino

IPC分类号： H02K29/08

CPC分类号： H02K29/08

摘要： An electric motor includes at least a stator core carrying toroidal coils wound thereon, a magnet provided in opposition to the stator core so as to constitute a part of a rotor, and magnetic flux detection elements for detecting changes in magnetic polarity of the magnet so as to control a current flowing in the toroidal coils. The stator is provided with a select number of cut portions at its open end. The number of cut portions is not less than that of the magnetic flux detection elements. The winding positions of the toroidal coils are considered in order to maintain magnetic symmetry, the magnetic flux detection elements being provided in the cut portions.

摘要翻译： 一种电动机至少包括一个承载环形线圈的定子铁芯，一个与定子铁芯相对设置的磁体，以构成转子的一部分，以及磁通量检测元件，用于检测磁体的磁极的变化，以便 以控制在环形线圈中流动的电流。 定子在其开口端处设置有选择数量的切割部分。 切断部的数量不小于磁通检测元件的数量。 考虑环形线圈的绕组位置以保持磁对称性，磁通检测元件设置在切割部分中。

公开(公告)号：US5533813A

公开(公告)日：1996-07-09

申请号：US320271

申请日：1994-10-11

申请人： Hiroshi Makino ,  Teiji Sata

发明人： Hiroshi Makino ,  Teiji Sata

IPC分类号： F16C17/02 ,  F16C33/04 ,  F16C33/10 ,  G02B26/12 ,  F16C33/20

CPC分类号： F16C33/106 ,  F16C33/043 ,  G02B26/121 ,  Y10S384/909

摘要： Disclosed is the improvement in a dynamic air pressure bearing in which a rotor is supported at high speed in the non-contact state. In an optical deflector, a stationary shaft is planted at the center portion of a housing. A stator core is disposed on a stud. A magnet yoke is integrated with a sleeve rotated relative to the stationary shaft. The magnet yoke contains an inner magnet and an outer magnet. A rotary polygonal mirror is mounted on a flange fixed on the sleeve by means of a center screw and a mirror cap. The rotary polygonal mirror is rotated at high speed together with the sleeve relative to the stationary shaft, thus constituting a dynamic air pressure bearing between the shaft and the sleeve. The stationary shaft is constituted of a main body and a ring-like bearing member fitted in the main body. The bearing member is formed of a ceramic material and formed with grooves for generating dynamic air pressure. The sleeve is preferably constituted of a main body and a bearing member of ceramic.

摘要翻译： 公开了一种动态空气压力轴承的改进，其中转子在非接触状态下以高速度被支撑。 在光学偏转器中，固定轴被植入壳体的中心部分。 定子芯设置在螺柱上。 磁轭与相对于固定轴旋转的套筒一体化。 磁轭包含内磁铁和外磁铁。 旋转多面镜通过中心螺丝和镜面盖安装在固定在套筒上的凸缘上。 旋转多面镜与套筒相对于固定轴一起高速旋转，从而构成轴与套筒之间的动态气压轴承。 固定轴由安装在主体中的主体和环状轴承部件构成。 轴承构件由陶瓷材料形成并形成有用于产生动态空气压力的凹槽。 套筒优选由陶瓷主体和轴承部件构成。