公开(公告)号：US06822775B2

公开(公告)日：2004-11-23

申请号：US10226344

申请日：2002-08-23

申请人： Mitsuo Suzuki ,  Yukio Itami ,  Masahiko Katoh

发明人： Mitsuo Suzuki ,  Yukio Itami ,  Masahiko Katoh

IPC分类号： G02B2608

CPC分类号： H02K5/1677 ,  H02K15/00

摘要： A high speed rotating apparatus including a shaft, a rotary body, and a motor. The rotary body driven by the motor has a hollow into which the shaft is inserted and forms a dynamic pressure air bearing between the rotary body and the shaft. The rotary body includes first and second rotary members. The first rotary member has an inner circumferential surface held for rotation by the dynamic pressure air bearing. The second rotary member has an inner circumferential surface fixed to the outer circumferential surface of the first rotary member through a hardening insertion process. The hardening insertion process is performed such that a tensile strength of the first rotary member is greater than an axial tensile stress to be produced in the inner circumferential surface of the first rotary member.

摘要翻译： 一种包括轴，旋转体和马达的高速旋转装置。 由电动机驱动的旋转体具有中空部，轴被插入该中空部，并在旋转体和轴之间形成动压空气轴承。 旋转体包括第一和第二旋转构件。 第一旋转构件具有由动压空气轴承保持旋转的内周面。 第二旋转构件具有通过硬化插入工艺固定到第一旋转构件的外周面的内周面。 进行硬化插入处理，使得第一旋转构件的拉伸强度大于在第一旋转构件的内周面中产生的轴向拉伸应力。

公开(公告)号：US5969844A

公开(公告)日：1999-10-19

申请号：US14568

申请日：1998-01-28

申请人： Yukio Itami ,  Mitsuo Suzuki ,  Wataru Kashima

发明人： Yukio Itami ,  Mitsuo Suzuki ,  Wataru Kashima

IPC分类号： F16C17/10 ,  F16C32/00 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/121

摘要： A rotor includes a hollow rotating shaft that is supported in a non-contact state by a radial self acting air bearing. The rotor also includes a contacting portion for positioning a rotating member in a rotating shaft direction that contacts with the rotating member from the rotating shaft direction. An engaging portion is included for positioning the rotating member in a direction perpendicular to the rotating shaft direction that engages with an inner surface of the rotating member. A holding portion is formed either in plural portions in a peripheral direction or as a single integrated portion that extends in the peripheral direction near the rotating member that is positioned by the contacting portion and the engaging portion, and that presses the rotating member from an opposite side of the contacting portion by deformation of one portion or a whole portion of the holding portion, and positions and holds the rotating member.

摘要翻译： 转子包括通过径向自动空气轴承以非接触状态支撑的中空旋转轴。 转子还包括用于沿旋转轴方向定位旋转构件的接触部分，该转动轴线方向与旋转构件从旋转轴方向接触。 包括接合部分，用于沿与旋转构件的内表面接合的与旋转轴方向垂直的方向定位旋转构件。 保持部在圆周方向上形成为多个部分，或者形成为在由接触部和接合部定位的旋转部件附近沿周向延伸的单一整体部，并且将旋转部件从相反的方向 通过保持部的一部分或整个部分的变形而使接触部分的一侧，并且定位和保持旋转构件。

公开(公告)号：US5769544A

公开(公告)日：1998-06-23

申请号：US707499

申请日：1996-09-24

申请人： Mitsuo Suzuki ,  Yukio Itami ,  Kunio Ikeda ,  Yuzuru Kudo ,  Takao Abe ,  Yoshihiro Takahashi ,  Kiyoshi Shibuya

发明人： Mitsuo Suzuki ,  Yukio Itami ,  Kunio Ikeda ,  Yuzuru Kudo ,  Takao Abe ,  Yoshihiro Takahashi ,  Kiyoshi Shibuya

IPC分类号： F16C17/02 ,  F16C33/10

CPC分类号： F16C33/107 ,  F16C17/02 ,  F16C17/026

摘要： A dynamic pressure pneumatic bearing device has a groove for generating a dynamic pressure and formed on an inner circumferential face of a rotating shaft or an outer circumferential face of a fixed shaft; each of these shafts being formed by an aluminum alloy; and a wear resisting film formed on each of the inner circumferential face and the outer circumferential face. Another dynamic pressure pneumatic bearing device is constructed by a rotating shaft having a cylindrical hollow and a fixed shaft inserted into this hollow. The fixed shaft has a bearing face opposed to an inner circumferential face of the rotating shaft and separated from this inner circumferential face with a predetermined clearance. Herringbone grooves for generating a dynamic pressure and recessed portions having the same depth as the herringbone grooves are formed on the bearing face.

摘要翻译： 动压气动轴承装置具有用于产生动压的槽，形成在旋转轴的内周面或固定轴的外周面上; 这些轴中的每一个由铝合金形成; 以及形成在内周面和外周面的每一个上的耐磨膜。 另一动压气动轴承装置由一个旋转轴构成，该轴具有插入该中空部的圆柱形中空和固定轴。 固定轴具有与旋转轴的内周面相对的轴承面并与该内周面以预定的间隙分离。 用于产生动压的人字形槽和与人字槽相同深度的凹部形成在支承面上。

公开(公告)号：US5574591A

公开(公告)日：1996-11-12

申请号：US383929

申请日：1995-02-06

申请人： Mitsuo Suzuki ,  Yukio Itami ,  Yoshio Hashimoto ,  Koji Tsukahara ,  Yoshihiro Takahashi ,  Takao Abe

发明人： Mitsuo Suzuki ,  Yukio Itami ,  Yoshio Hashimoto ,  Koji Tsukahara ,  Yoshihiro Takahashi ,  Takao Abe

IPC分类号： F16C17/02 ,  F16C33/10 ,  G02B7/182 ,  G02B26/12 ,  H02K5/16 ,  H02K7/09 ,  H02K21/24 ,  H02K29/06 ,  G02B26/08

CPC分类号： F16C33/107 ,  F16C17/026 ,  G02B26/121 ,  G02B7/1821 ,  H02K21/24 ,  H02K29/06 ,  H02K5/1677 ,  H02K7/09 ,  Y10S359/90

摘要： A polygon scanner has a lighter rotating shaft on which a polygon mirror is mounted, to prevent a positional deviation of the polygon mirror from the rotating shaft in high speed rotation, in which the rotating shaft is supported through a dynamic pressure air bearing on a fixed shaft, in which the polygon mirror and motor constituent members are mounted on the rotating shaft, and in which the rotating shaft and the polygon mirror are made of respective light weight materials matched with each other in coefficient of thermal expansion, for example of aluminum or an aluminum alloy. Further, an anodic oxide film is formed at least on a portion where the rotating shaft could contact with the fixed shaft, and floating means is provided for constantly floating the rotating shaft relative to the fixed shaft upward in an axial direction thereof. A process for producing the polygon scanner comprises making a predetermined masking on a portion where the rotating shaft could contact with the fixed shaft, prior to an anodic oxidation treatment to form an anodic oxide film on the portion, and then performing the anodic oxidation treatment, whereby, during the treatment, forming an anodic oxide film and a pattern of recesses and protrusions for dynamic pressure generation corresponding to a pattern of the masking, which are constituent elements of a dynamic pressure air bearing.

摘要翻译： 多边形扫描器具有安装有多面镜的较轻的旋转轴，以防止多角镜从高速旋转中的旋转轴的位置偏离，其中旋转轴通过动态压力空气轴承支撑在固定的 轴，其中多面镜和电动机构成部件安装在旋转轴上，并且其中旋转轴和多面镜由相对于热膨胀系数彼此匹配的各种重量轻的材料制成，例如铝或 铝合金。 此外，至少在旋转轴可以与固定轴接触的部分上形成阳极氧化膜，并且设置有浮动装置，用于使旋转轴相对于固定轴在轴向上向上上升。 多边形扫描仪的制造方法，在阳极氧化处理之前，在旋转轴可以与固定轴接触的部分上进行规定的掩模，在该部分上形成阳极氧化膜，然后进行阳极氧化处理， 由此，在处理过程中，形成阳极氧化膜和用于动压产生的凹凸图案，其对应于作为动压空气轴承的组成元件的掩模图案。

公开(公告)号：US5069515A

公开(公告)日：1991-12-03

申请号：US584615

申请日：1990-09-19

申请人： Yukio Itami ,  Mitsuo Suzuki ,  Teruo Ohne ,  Kenichi Hoshi ,  Eiri Sagae ,  Yoshio Hashimoto

发明人： Yukio Itami ,  Mitsuo Suzuki ,  Teruo Ohne ,  Kenichi Hoshi ,  Eiri Sagae ,  Yoshio Hashimoto

IPC分类号： G02B26/12

CPC分类号： G02B26/121 ,  F16C17/026 ,  F16C32/0427

摘要： An optical deflector of an air bearing type has a fixed shaft; a rotary shaft having a hollow portion fitted onto the fixed shaft; a support device disposed between an end portion of the fixed shaft and an end portion of the hollow portion opposite thereto and supporting the rotary shaft in an axial direction thereof; a radial air bearing formed between an inner circumferential face of the hollow portion and an outer circumferential face of the fixed shaft; a polygon mirror fixed to the rotary shaft; a driving device for rotating the rotary shaft; a device for deflecting light irradiated onto the polygon mirror by rotating the rotary shaft through the driving device; a device for forming a flange for fixing the polygon mirror thereto integrally with the rotary shaft; and a device for setting an upper end portion of the support device on a fixed shaft side thereof to be lower than an upper end face of the polygon mirror. The support device has a first magnet directly attached onto an end face of the fixed shaft, a second magnet opposite to the first magnet and attached to the hollow portion of the rotary shaft, and a third magnet opposite to the second magnet and attached to a casing for covering the polygon mirror. Magnetic poles of the first, second and third magnets are opposite to each other to generate magnetic repulsive force.

摘要翻译： 空气轴承型光偏转器具有固定轴; 具有安装在所述固定轴上的中空部的旋转轴; 支撑装置，其设置在所述固定轴的端部和与所述固定轴的端部相对的中空部的端部之间，并且沿其轴向方向支撑所述旋转轴; 形成在所述中空部的内周面与所述固定轴的外周面之间的径向空气轴承; 固定在旋转轴上的多面镜; 用于旋转所述旋转轴的驱动装置; 用于通过驱动装置旋转旋转轴来偏转照射到多面镜上的光的装置; 用于形成用于将所述多角镜固定到所述旋转轴上的凸缘的装置; 以及用于将固定轴侧的支撑装置的上端部设定为低于多面镜的上端面的装置。 支撑装置具有直接附接到固定轴的端面上的第一磁体，与第一磁体相对的第二磁体并且附接到旋转轴的中空部分，以及与第二磁体相对的第三磁体，并附接到第一磁体 用于覆盖多面镜的外壳。 第一，第二和第三磁体的磁极彼此相对以产生磁性排斥力。

公开(公告)号：US06778203B2

公开(公告)日：2004-08-17

申请号：US10096250

申请日：2002-03-13

申请人： Yukio Itami ,  Mitsuo Suzuki

发明人： Yukio Itami ,  Mitsuo Suzuki

IPC分类号： B41J247

CPC分类号： G02B26/121

摘要： A polygonal scanner of the present invention includes a rotary body including a ceramic rotary sleeve and a metallic cylindrical member shrinkage-fitted on the rotary sleeve. The cylindrical member is formed with mirror surfaces constituting a polygonal mirror. A dynamic pressure, air bearing supports the rotary body. The mirror surfaces overlap the rotary sleeve in the axial direction of the rotary sleeve. A hole greater in diameter than the dynamic pressure, air bearing is formed in the top wall of the cylindrical member. The cylindrical member includes a stress removing portion positioned between the mirror surfaces and the rotary sleeve for removing a stress ascribable to shrinkage-fitting.

摘要翻译： 本发明的多边形扫描仪包括：旋转体，其包括陶瓷旋转套筒和收缩配合在旋转套筒上的金属圆柱形构件。 圆柱形构件形成有构成多面镜的镜面。 动态压力，空气轴承支撑旋转体。 镜面在旋转套筒的轴向上与旋转套筒重叠。 直径大于动压力的孔，在圆柱形构件的顶壁上形成空气轴承。 圆柱形构件包括位于反射镜表面和旋转套筒之间的应力去除部分，用于去除由于收缩配合而引起的应力。

公开(公告)号：US06281609B1

公开(公告)日：2001-08-28

申请号：US09321886

申请日：1999-05-28

申请人： Yukio Itami ,  Mitsuo Suzuki

发明人： Yukio Itami ,  Mitsuo Suzuki

IPC分类号： H02K1100

CPC分类号： G02B26/121 ,  H02K3/28 ,  H02K21/22 ,  H02K29/08

摘要： A direct-current (DC) brushless motor is provided for realizing an easy winding operation, a flat shape, effective utilization of a magnetic force, improved magnetic characteristics of a stator core, and a good rotation driving efficiency particularly at a higher rotational speed region. The DC brushless motor switches conduction to windings wound around a stator core fixedly disposed corresponding to a rotatable rotor on which a permanent magnet is fixed, to generate a rotating magnetic field which causes the rotor to rotate. The DC brushless motor includes a permanent magnet having n magnetized poles, where n is an even number, a rotatably held rotor on which the permanent magnet is fixed, a stator core having T-shaped pole shoes corresponding to the magnetic poles of the permanent magnet, windings fixed on the stator core and including a plurality of phases for selectively generating magnetic polarities in sequence, a driver circuit for switching conduction to the windings, and a rotating position detector for detecting a rotating position of the permanent magnet. The windings are divided into a plurality of winding groups for generating magnetic polarities in a plurality of the windings so as to produce a magnetic repellent force or a magnetic attractive force between all the magnetic poles of the permanent magnet and T-shaped pole shoes of the stator core associated with selected phases by the driver circuit based on a rotating position detected by the rotating position detector.

摘要翻译： 提供直流（DC）无刷电动机，用于实现易于卷绕操作，扁平形状，有效利用磁力，改善定子铁心的磁特性以及良好的旋转驱动效率，特别是在较高转速区域 。 DC无刷电动机将传导绕组缠绕在与固定有永磁体的可旋转转子相对应地固定设置的定子芯上缠绕的绕组，以产生使转子旋转的旋转磁场。 直流无刷电动机包括具有n个磁极的永磁体，其中n为偶数，固定有永磁体的可旋转地保持的转子，具有对应于永磁体的磁极的T形极靴的定子铁心 固定在定子铁芯上的线圈，并且包括用于依次选择性地产生磁极性的多个相，用于切换到绕组的导通的驱动电路，以及用于检测永磁体的旋转位置的旋转位置检测器。 绕组被分成多个绕组，用于在多个绕组中产生磁极性，从而在永磁体的所有磁极和T型极靴的所有磁极之间产生磁驱动力或磁吸引力 基于由旋转位置检测器检测到的旋转位置由驱动器电路与选定相位相关联的定子铁心。

公开(公告)号：US5606448A

公开(公告)日：1997-02-25

申请号：US035791

申请日：1993-03-23

申请人： Mitsuo Suzuki ,  Yukio Itami ,  Yoshio Hashimoto ,  Koji Tsukahara ,  Yoshihiro Takahashi ,  Takao Abe

发明人： Mitsuo Suzuki ,  Yukio Itami ,  Yoshio Hashimoto ,  Koji Tsukahara ,  Yoshihiro Takahashi ,  Takao Abe

IPC分类号： F16C17/02 ,  F16C33/10 ,  G02B7/182 ,  G02B26/12 ,  H02K5/16 ,  H02K7/09 ,  H02K21/24 ,  H02K29/06 ,  G02B26/08

CPC分类号： F16C33/107 ,  F16C17/026 ,  G02B26/121 ,  G02B7/1821 ,  H02K21/24 ,  H02K29/06 ,  H02K5/1677 ,  H02K7/09 ,  Y10S359/90

摘要： A polygon scanner has a lighter rotating shaft on which a polygon mirror is mounted, to prevent a positional deviation of the polygon mirror from the rotating shaft in high speed rotation, in which the rotating shaft is supported through a dynamic pressure air bearing on a fixed shaft, in which the polygon mirror and motor constituent members are mounted on the rotating shaft, and in which the rotating shaft and the polygon mirror are made of respective light weight materials matched with each other in coefficient of thermal expansion, for example of aluminum or an aluminum alloy. Further, an anodic oxide film is formed at least on a portion where the rotating shaft could contact with the fixed shaft, and floating means is provided for constantly floating the rotating shaft relative to the fixed shaft upward in an axial direction thereof. A process for producing the polygon scanner comprises making a predetermined masking on a portion where the rotating shaft could contact with the fixed shaft, prior to an anodic oxidation treatment to form an anodic oxide film on the portion, and then performing the anodic oxidation treatment, whereby, during the treatment, forming an anodic oxide film and a pattern of recesses and protrusions for dynamic pressure generation corresponding to a pattern of the masking, which are constituent elements of a dynamic pressure air bearing.

摘要翻译： 多边形扫描器具有安装有多面镜的较轻的旋转轴，以防止多角镜从高速旋转中的旋转轴的位置偏离，其中旋转轴通过动态压力空气轴承支撑在固定的 轴，其中多面镜和电动机构成部件安装在旋转轴上，并且其中旋转轴和多面镜由相对于热膨胀系数彼此匹配的各种重量轻的材料制成，例如铝或 铝合金。 此外，至少在旋转轴可以与固定轴接触的部分上形成阳极氧化膜，并且设置有浮动装置，用于使旋转轴相对于固定轴在轴向上向上上升。 多边形扫描仪的制造方法，在阳极氧化处理之前，在旋转轴与固定轴接触的部分上进行规定的掩模，在该部分上形成阳极氧化膜，然后进行阳极氧化处理， 由此，在处理过程中，形成阳极氧化膜和用于动压产生的凹凸图案，其对应于作为动压空气轴承的组成元件的掩模图案。

公开(公告)号：US5726699A

公开(公告)日：1998-03-10

申请号：US440350

申请日：1995-05-12

申请人： Yukio Itami ,  Mitsuo Suzuki

发明人： Yukio Itami ,  Mitsuo Suzuki

IPC分类号： B41J2/47 ,  G02B26/12 ,  G02B26/00

CPC分类号： B41J2/471 ,  G02B26/121

摘要： A closed type polygon scanner has a housing, a rotor which is rotatively supported to a rotating shaft fixed to the housing and which includes a polygon mirror, a motor which generates a magnetic force to the rotor and rotates the rotor, and a cover. The cover includes an outer peripheral portion fixed to an outer peripheral portion of the housing, and covers the rotor together with the housing. An opening is formed at a predetermined portion in the cover facing a mirror surface of the polygon mirror through which a laser beam passes, and a window member is fixed to the opening in closed state. An inner peripheral surface of the cover facing the mirror surface of the polygon mirror is formed cylindrically and almost coaxially to a rotating axis of the rotating shaft, and a width in the rotating axis direction of the opening is set to a predetermined width relative to a width of the polygon mirror so that turbulent air generated around the polygon mirror is reduced.

摘要翻译： 封闭型多边形扫描器具有壳体，转子，其被可旋转地支撑到固定到壳体的旋转轴上，该转子包括多面镜，向转子产生磁力并使转子旋转的电动机和盖。 所述盖包括固定到所述壳体的外周部的外周部，并且与所述壳体一起覆盖所述转子。 开口形成在面对激光束通过的多面镜的镜面的盖的预定部分处，并且窗构件在关闭状态下固定到开口。 面对多面镜的镜面的盖的内周面与旋转轴的旋转轴成圆筒状且几乎同轴，开口的旋转轴方向的宽度相对于 多角镜的宽度，使得在多面镜周围产生的湍流减少。

公开(公告)号：US06465918B2

公开(公告)日：2002-10-15

申请号：US09883316

申请日：2001-06-19

申请人： Yukio Itami ,  Mitsuo Suzuki

发明人： Yukio Itami ,  Mitsuo Suzuki

IPC分类号： H02K2112

CPC分类号： G02B26/121 ,  H02K3/28 ,  H02K21/22 ,  H02K29/08

摘要： An image forming apparatus with a DC brushless motor including a permanent magnet having n magnetized poles, where n is an even number, a rotatably held rotor on which the permanent magnet is fixed, a stator core having T-shaped pole shoes corresponding to the magnetic poles of the permanent magnet, windings fixed on the stator core and including a plurality of phases for selectively generating magnetic polarities in sequence, a driver circuit for switching conduction to the windings, and a rotating position detector for detecting a rotating position of the permanent magnet. The windings are divided into a plurality of winding groups for generating magnetic polarities in a plurality of the windings so as to produce a magnetic repellent force or a magnetic attractive force between all the magnetic poles of the permanent magnet and T-shaped pole shoes of the stator core associated with selected phases by the driver circuit based on a rotating position detected by the rotating position detector.

摘要翻译： 一种具有直流无刷电动机的图像形成装置，其包括具有n个磁极的永磁体，其中n为偶数，固定有永磁体的可旋转地保持的转子，具有对应于磁性的T形极靴的定子芯 永磁体的极点，固定在定子铁芯上的绕组，并且包括用于依次选择性地产生磁极性的多个相，用于切换到绕组的导通的驱动电路，以及用于检测永磁体的旋转位置的旋转位置检测器 。 绕组被分成多个绕组，用于在多个绕组中产生磁极性，从而在永磁体的所有磁极和T型极靴的所有磁极之间产生磁驱动力或磁吸引力 基于由旋转位置检测器检测到的旋转位置由驱动器电路与选定相位相关联的定子铁心。