公开(公告)号：US20120038235A1

公开(公告)日：2012-02-16

申请号：US13184383

申请日：2011-07-15

申请人： Ho Kyung JANG

发明人： Ho Kyung JANG

IPC分类号： H02K21/22

CPC分类号： H02K1/2786

摘要： Disclosed herein is a spindle motor including: a rotating part including a hub coupled to a rotating shaft and a magnet coupled to the hub; and a fixing part including a sleeve supporting the rotating shaft and an armature facing the magnet, wherein the magnet has a contact part formed on an upper end portion thereof in a direction of the rotating shaft, the contact part partially contacting a lower end portion of the hub.

摘要翻译： 这里公开了一种主轴电动机，包括：旋转部分，其包括联接到旋转轴的轮毂和联接到轮毂的磁体; 以及固定部，其包括支撑所述旋转轴的套筒和面向所述磁体的电枢，其中，所述磁体具有形成在所述旋转轴的方向的上端部的接触部，所述接触部与所述旋转轴的下端部 中心。

公开(公告)号：US20130222945A1

公开(公告)日：2013-08-29

申请号：US13474892

申请日：2012-05-18

申请人： Ho Kyung JANG

发明人： Ho Kyung JANG

IPC分类号： H02K7/08 ,  G11B5/52 ,  F16C25/00

CPC分类号： G11B19/2009 ,  F16C33/101 ,  F16C43/02 ,  F16C2370/12 ,  H02K5/1675 ,  H02K2205/03

摘要： There are provided a rotating member assembly and a spindle motor including the same. The rotating member assembly includes: a rotating member including a shaft and a hub fixed to an upper portion of the shaft, wherein perpendicularity of the hub with regard to the shaft at a position spaced apart from the center of rotation of the shaft in an outer diameter direction by an axial length or more for which the shaft is fitted into the sleeve is less than double a distance of a gap of a bearing clearance formed by fitting the shaft into the sleeve.

摘要翻译： 提供了一种旋转构件组件和包括该旋转构件组件的主轴马达。 旋转构件组件包括：旋转构件，其包括轴和固定到轴的上部的毂，其中毂相对于轴在与外部的轴的旋转中心间隔开的位置处的垂直度 直径方向通过轴装配到套筒中的轴向长度或更大的距离小于通过将轴装配到套筒而形成的轴承间隙的间距的两倍。

公开(公告)号：US20130044970A1

公开(公告)日：2013-02-21

申请号：US13572096

申请日：2012-08-10

申请人： Jong Ryeol OH ,  Ho Kyung JANG

发明人： Jong Ryeol OH ,  Ho Kyung JANG

IPC分类号： F16C32/06

CPC分类号： F16C17/102 ,  F16C17/107 ,  F16C33/107 ,  F16C41/008 ,  F16C2240/40 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A hydrodynamic bearing assembly includes a shaft; a sleeve having a shaft hole formed therein so that the shaft is rotatably inserted thereinto; and first and second dynamic pressure generation grooves provided in at least one of an outer surface of the shaft and an inner surface of the sleeve and having a herringbone pattern including V-shaped portions in which upper and lower wings are provided to generate dynamic pressure in lubricating fluid filling a bearing clearance between the shaft and the sleeve at the time of rotation of the shaft. The first dynamic pressure generation groove has a V-shaped portion of which an upper wing is longer than a lower wing, and the second dynamic pressure generation groove is disposed below the first dynamic pressure generation groove in an axial direction and has a V-shaped portion of which a lower wing is longer than an upper wing.

摘要翻译： 流体动力轴承组件包括轴; 具有形成在其中的轴孔的套筒，使得轴可旋转地插入其中; 以及第一和第二动压产生槽，其设置在所述轴的外表面和所述套筒的内表面中的至少一个中，并且具有包括V形部分的人字形图案，其中设有上翼和下翼以产生动压 润滑流体在轴的旋转时填充轴和套筒之间的轴承间隙。 第一动压产生槽具有上翼比下翼长的V形部分，第二动压产生槽沿轴向设置在第一动压产生槽的下方，并具有V形 下翼部的一部分比上翼长。