公开(公告)号：US20130229093A1

公开(公告)日：2013-09-05

申请号：US13872561

申请日：2013-04-29

Applicant: Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.

Inventor： Takanori WATANABE ,  Mitsuo KODAMA ,  Hiroshi IWAI ,  Akira NISHIO

IPC: H02K3/28

CPC classification number: H02K3/28 ,  G11B17/0287 ,  G11B19/2009 ,  G11B25/043 ,  H02K3/18 ,  H02K5/1675 ,  H02K21/22

Abstract: A disk drive device includes: a base member; a hub on which a recording disk is placed; a bearing unit arranged on the base member for rotatably supporting the hub; and a spindle drive unit for rotationally driving the hub, wherein the spindle drive unit includes a stator core having salient poles, a coil wound around each of the salient poles, and a magnet having a plurality of magnetic poles arranged in a circumferential direction opposed to the salient poles, the hub includes an outer cylindrical portion formed of a magnetic material and engaged with an inner periphery of the recording disk, and an inner cylindrical portion fixing an outer periphery of the magnet, the number of magnetic poles is an even number in a range of 10 to 16, and the number of salient poles is a multiple of 3 in a range of 12 to 24.

Abstract translation: 磁盘驱动装置包括：基座部件; 记录盘放置在其上的集线器; 轴承单元，布置在所述基座构件上，用于可旋转地支撑所述轮毂; 以及用于旋转驱动轮毂的主轴驱动单元，其中所述主轴驱动单元包括具有凸极的定子芯，缠绕在每个所述凸极上的线圈，以及具有沿与所述凸极相对的圆周方向布置的多个磁极的磁体 凸极包括由磁性材料形成并与记录盘的内周接合的外圆柱形部分和固定磁铁外周的内圆柱形部分，磁极数量为偶数 范围为10〜16，凸极数为12〜24的3的倍数。

公开(公告)号：US20150213833A1

公开(公告)日：2015-07-30

申请号：US14682149

申请日：2015-04-09

Applicant: Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.

Inventor： Takanori WATANABE ,  Takuji YAMADA ,  Susumu ANDO ,  Hiroshi IWAI

IPC: G11B19/20

CPC classification number: G11B19/2045 ,  G11B19/2036 ,  G11B25/043 ,  G11B33/148 ,  Y10T29/49639

Abstract: In a rotating device, a recording disk is mounted on a hub. A base rotatably supports the hub via a bearing unit. A core is fixed to the base with a ring portion and a plurality of teeth, with coils wound there around. The bearing unit includes a cylindrical portion that surrounds a radial dynamic pressure groove. The base includes an integrated surrounding portion protruding toward the hub, with the ring portion glued there around. The base further includes an integrated increasing-thickness portion arranged outside of the surrounding portion such that the increasing-thickness portion becomes thicker the closer it is to the surrounding portion. The cylindrical portion is surrounded by the surrounding portion, the surrounding portion is surrounded by the increasing-thickness portion, and a surface of the increasing-thickness portion at least partly overlaps the radial dynamic pressure groove in the axial direction.

Abstract translation: 在旋转装置中，记录盘安装在轮毂上。 基座通过轴承单元可旋转地支撑毂。 芯部具有环形部分和多个齿部固定到基部，线圈缠绕在其周围。 轴承单元包括围绕径向动态压力槽的圆柱形部分。 底座包括朝向轮毂突出的一体的环绕部分，其中环部分胶合在其周围。 底座还包括设置在周围部分外部的集成增加厚度部分，使得增加厚度部分越靠近其周围部分变得越厚。 圆筒部被周围部包围，周围部由加厚部包围，增厚部的表面与轴向的径向动压槽至少部分重叠。

公开(公告)号：US20130342935A1

公开(公告)日：2013-12-26

申请号：US14011301

申请日：2013-08-27

Applicant: Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.

Inventor： Takanori WATANABE ,  Hiroshi IWAI ,  Tomoyuki TASHIRO

IPC: G11B19/20

CPC classification number: G11B19/2009 ,  G11B19/2045 ,  H02K3/28

Abstract: The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion.

Abstract translation: 盘驱动装置包括基座构件，轮毂，布置在基座构件上并且可旋转地支撑轮毂的轴承单元和驱动轮毂旋转的主轴驱动单元。 主轴驱动单元包括具有凸极的定子芯，缠绕在凸极上的线圈和与凸极相对的磁体。 由磁性材料构成的毂包括与记录盘的内周接合的外筒部和固定有磁体的外周的内筒部。 内筒部的直径大于外筒部的直径。