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    Bearing mechanism and spindle motor having the same
    1.
    发明申请
    Bearing mechanism and spindle motor having the same 审中-公开
    轴承机构和主轴电机具有相同的功能

    公开(公告)号：US20070242911A1

    公开(公告)日：2007-10-18

    申请号：US11808826

    申请日：2007-06-13

    申请人： Hisaya Nakagawa ,  Michiaki Takizawa ,  Toru Nakanishi ,  Takeshi Kaneko

    发明人： Hisaya Nakagawa ,  Michiaki Takizawa ,  Toru Nakanishi ,  Takeshi Kaneko

    IPC分类号： F16C33/02

    CPC分类号： F16C33/107

    摘要： A bearing mechanism having a sleeve including at an inner circumferential surface thereof a first bearing surface and a relief portion including a diameter greater than that of the first bearing surface is used in a spindle motor. An axial length of the first bearing surface is between approximately 1.2 mm and 1.8 mm. By virtue of such configuration, characteristics of the spindle motor are improved and an operating life of the spindle motor is extended.

    摘要翻译： 在主轴电机中使用具有在其内周面具有第一轴承面的套筒和包括直径大于第一轴承面的直径的凸轮部的轴承机构。 第一支承表面的轴向长度在大约1.2mm和1.8mm之间。 通过这样的结构，能够提高主轴电机的特性，延长主轴电机的使用寿命。

    Bearing unit
    2.
    发明授权
    Bearing unit 失效
    轴承单元

    公开(公告)号：US07435002B2

    公开(公告)日：2008-10-14

    申请号：US11321125

    申请日：2005-12-28

    申请人： Hisaya Nakagawa ,  Michiaki Takizawa ,  Toru Nakanishi ,  Takeshi Kaneko

    发明人： Hisaya Nakagawa ,  Michiaki Takizawa ,  Toru Nakanishi ,  Takeshi Kaneko

    IPC分类号： F16C32/06

    CPC分类号： F16C33/1075 ,  F16C17/02 ,  F16C33/103 ,  F16C2370/12

    摘要： A bearing unit comprises a cylindrical oil-impregnated bearing, in which a bearing bore to support a turning shaft is formed so as to enable the turning shaft to turn; a bearing holder, in which the oil-impregnated bearing is fixed by an inner bore; a first groove being formed in an axial direction on an inner circumferential surface of the oil-impregnated bearing; and a second groove being formed in an axial direction on at least one of an outer circumferential surface of the oil-impregnated bearing and an inner circumferential surface of the bearing holder. The second groove is formed so as to have a greater depth than that of the first groove. The second groove is also formed so as to have a larger cross section than that of the first groove.

    摘要翻译： 轴承单元包括圆柱形含油轴承，其中形成有用于支撑转动轴的轴承孔，以使转动轴转动; 轴承座，其中所述含油轴承由内孔固定; 在所述含油轴承的内周面上沿轴向形成的第一槽; 以及在所述含油轴承的外周面和所述轴承座的内周面中的至少一个上沿轴向形成的第二槽。 第二槽形成为具有比第一槽更深的深度。 第二凹槽也形成为具有比第一凹槽更大的横截面。

    Sintered oil-impregnated bearing, manufacturing method thereof, and motor comprising same
    3.
    发明授权
    Sintered oil-impregnated bearing, manufacturing method thereof, and motor comprising same 失效
    烧结含油轴承，其制造方法以及包含该轴承的电动机

    公开(公告)号：US5980819A

    公开(公告)日：1999-11-09

    申请号：US38963

    申请日：1998-03-12

    申请人： Hisaya Nakagawa ,  Toru Nakanishi ,  Michiaki Takizawa ,  Takehiko Yazawa

    发明人： Hisaya Nakagawa ,  Toru Nakanishi ,  Michiaki Takizawa ,  Takehiko Yazawa

    IPC分类号： F16C33/10 ,  C22C32/00 ,  F16D69/02 ,  H02K5/167 ,  B22F3/12 ,  B22F3/24

    CPC分类号： C22C32/0089 ,  F16C33/128 ,  F16C33/145 ,  F16D69/027 ,  F16C33/104 ,  F16C33/1095

    摘要： A sintered oil-impregnated bearing 20 used in a bearing device 30 is made by molding a mixture of a composite fine particles (main material) and a solid lubricant previously added to the main material in a proportion of about one weight percent to about three weight percent, wherein the main material comprises composite fine particles composed of iron powders having surfaces coated with copper, and the solid lubricant comprises fine particles made of an inorganic compound such as molybdenum disulfide and having surfaces coated with copper, sintering the mold at a temperature in a range of 650.degree. C. to 700.degree. C. to form a sintered body 20b, and impregnating the sintered body 20b with lubricant oil. Since the sintered body 20b itself has lubricity, the sintered oil-impregnated bearing is free from abrasion or seizure even if oil is used up.

    摘要翻译： 在轴承装置30中使用的烧结的含油轴承20通过以预先添加到主材料中的复合细颗粒（主要材料）和固体润滑剂的混合物以约1重量％至约3重量％的比例 百分比，其中主要材料包括由表面涂覆有铜的铁粉构成的复合细颗粒，固体润滑剂包括由无机化合物如二硫化钼制成的细颗粒并具有铜表面，在 在650℃至700℃的范围内形成烧结体20b，并用润滑油浸渍烧结体20b。 由于烧结体20b本身具有润滑性，因此即使油被用尽，烧结的含油轴承也不会磨损或卡死。

    Bearing device for an electric motor
    4.
    发明授权
    Bearing device for an electric motor 失效
    电动机轴承装置

    公开(公告)号：US5372433A

    公开(公告)日：1994-12-13

    申请号：US201028

    申请日：1994-02-24

    申请人： Toru Nakanishi ,  Hisaya Nakagawa

    发明人： Toru Nakanishi ,  Hisaya Nakagawa

    IPC分类号： F16C17/02 ,  F16C23/02 ,  H02K5/167 ,  F16C33/04

    CPC分类号： F16C17/02 ,  F16C23/02 ,  F16C33/104 ,  H02K5/1675

    摘要： An object of this invention is to provide a bearing device for an electric motor in which a bearing holder holding an oil-impregnated bearing provides good area contact from the beginning and can be readily formed with high productivity. In the bearing device for an electric motor in which a bearing-supporting cylindrical recess is formed in one end face of a bearing holder in the form of a hollow cylinder, and an oil-impregnated bearing having a shaft-inserting hole is fixedly fitted in the bearing-supporting cylindrical recess in such a manner that the shaft-inserting hole of the oil-impregnated bearing is inclined with respect to the central axis P of the bearing holder; the bearing-supporting cylindrical recess of the bearing holder is defined by a cylindrical surface whose diameter is slightly smaller than the outside diameter of the oil-impregnated bearing and which is in parallel with the central axis P of the bearing holder, and an abutting annular surface inclined with respect to the central axis P, and the oil-impregnated bearing is arranged inclined in the bearing-supporting cylindrical recess being abutted against the abutting annular surface.

    摘要翻译： 本发明的目的是提供一种用于电动机的轴承装置，其中保持含油轴承的轴承保持器从一开始就提供良好的面积接触并且可以容易地以高生产率形成。 在用于电动机的轴承装置中，在轴承座的一个端面形成有轴承座的圆筒形凹部，其形状为中空圆柱体，并且具有轴插入孔的含油轴承被固定地安装在 轴承支承圆筒形凹部，使得所述含油轴承的轴插入孔相对于所述轴承座的中心轴线P倾斜; 轴承保持架的支承圆柱形凹部由其直径略小于含油轴承的外径并与轴承座的中心轴线P平行的圆柱形表面限定， 相对于中心轴线P倾斜的表面，并且所述含油轴承在所述支承圆柱形凹部中倾斜地抵靠所述抵接环形表面。

    Sintered oil-impregnated bearing
    5.
    发明授权
    Sintered oil-impregnated bearing 失效
    烧结含油轴承

    公开(公告)号：US5120140A

    公开(公告)日：1992-06-09

    申请号：US601868

    申请日：1990-10-23

    申请人： Hisaya Nakagawa ,  Toru Nakanishi

    发明人： Hisaya Nakagawa ,  Toru Nakanishi

    IPC分类号： B22F3/11 ,  B22F5/10 ,  F16C33/06 ,  F16C33/10

    CPC分类号： B22F5/106 ,  B22F3/1109 ,  B22F5/10 ,  F16C33/103 ,  F16C33/104 ,  F16C33/14 ,  B22F2998/00 ,  F16C2220/20 ,  Y10S384/902 ,  Y10T29/49668

    摘要： A sintered oil-impregnated bearing is disclosed having a plurality of evenly extending smoothed areas on the inner periphery surface for receiving a rotary shaft, the smoothed areas having a constant angular width of 10.degree. to 90.degree., the remaining surface areas between any adjoining two of said smoothed areas being kept porous. Such a sintered oil-impregnated bearing can be realized without the process of aging and ensures a good oil circulation on the smoothed surface areas, a high precision assembling operation because of the exactly circular and concentric configuration of the inner and outer peripheries and an easy and accurate alignment of the smoothed surface areas and the corresponding contact areas of the rotary shaft. Therefore, a sintered oil-impregnated bearing according to the invention is free from any metallurgical damage and can be manufactured in an existing manufacturing facility without significantly modifying the manufacturing equipment.

    摘要翻译： 公开了一种烧结的含油轴承，其在内周面上具有多个均匀延伸的平滑区域，用于容纳旋转轴，平滑区域具有10°至90°的恒定角宽度，其余表面积在任何相邻的两个 所述平滑区域保持多孔。 这种烧结的含油轴承可以在没有老化的过程的情况下实现，并且确保在平滑的表面区域上的良好的油循环，由于内外周的精确圆形和同心构造而进行的高精度组装操作， 平滑的表面区域和旋转轴的相应的接触区域的精确对准。 因此，根据本发明的烧结油浸轴承没有任何冶金损坏，并且可以在现有制造设备中制造而不显着地改变制造设备。

    Method and test composition for the determination of the substrate for xanthine oxidase
    6.
    发明授权
    Method and test composition for the determination of the substrate for xanthine oxidase 失效
    用于黄嘌呤氧化酶底物测定的方法和试验组合物

    公开(公告)号：US4341868A

    公开(公告)日：1982-07-27

    申请号：US201067

    申请日：1980-04-18

    申请人： Toru Nakanishi ,  Yozo Machida

    发明人： Toru Nakanishi ,  Yozo Machida

    IPC分类号： C12N9/04 ,  C12Q1/26 ,  C12N9/06 ,  C12R1/01

    CPC分类号： C12N9/0006 ,  C12Q1/26 ,  C12Y117/03002

    摘要： The substrate for xanthine oxidase such as xanthine, hypoxanthine, guanine, 2-hydroxypurine, etc. are determined by oxidizing the substrate by the action of xanthine oxidase derived from a microorganism and determining the formed hydrogen peroxide by the system for the determination of hydrogen peroxide comprising peroxidase and coloring reagent.The determination is carried out in one step by using the test composition for the determination of the substrate for xanthine oxidase which comprises xanthine oxidase and a system for the determination of hydrogen peroxide.The determination method can be applied to the determination of the compound which participates in the system wherein the substrate is stoichiometrically formed by the reaction or decomposition. When the system is an enzymatic reaction, the compound is determined in one step.Xanthine oxidase used in the present invention is different from known xanthine oxidase in molecular weight and is prepared by culturing a microorganism belonging to the genus Enterobacter.

    摘要翻译： 黄嘌呤氧化酶如黄嘌呤，次黄嘌呤，鸟嘌呤，2-羟基嘌呤等的底物是通过用衍生自微生物的黄嘌呤氧化酶的作用氧化底物来测定的，并通过用于测定过氧化氢的系统测定形成的过氧化氢 包括过氧化物酶和着色剂。 通过使用包含黄嘌呤氧化酶的黄嘌呤氧化酶底物的测定用试剂和测定过氧化氢的体系，一步进行测定。 该测定方法可以应用于通过反应或分解化学计量地形成底物的参与系统的化合物的测定。 当系统是酶反应时，化合物在一个步骤中测定。 本发明中使用的黄嘌呤氧化酶与已知的黄嘌呤氧化酶的分子量不同，是通过培养属于肠杆菌属的微生物来制备的。