| 发明名称 | Disk drive device with hub with thinness and suppressed torque decrease | ||
| 摘要 | 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 base member includes a wire hole through which a drawing line of a wire for forming the coil passes, and a concavity formed at a bottom surface of the base member at least partly arranged radially outside the outer diameter portion of the magnet. The drawing line passes through the wire hole and is arranged along the bottom surface of the base member and connected to a wiring member at the concavity beyond the outer diameter portion of the magnet. | ||
| 申请公布号 | US8848312(B2) | 申请公布日期 | 2014.09.30 |
| 申请号 | US201314011301 | 申请日期 | 2013.08.27 |
| 申请人 | Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd. | 发明人 | Watanabe Takanori;Iwai Hiroshi;Tashiro Tomoyuki |
| 分类号 | G11B17/02;G11B19/20 | 主分类号 | G11B17/02 |
| 代理机构 | Blank Rome LLP | 代理人 | Blank Rome LLP |
| 主权项 | 1. A disk drive device comprising: 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, wherein the spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole, and a magnet configured with an outer diameter portion and a portion that is opposite to the salient pole, wherein the hub is formed of a magnetic material, wherein the base member includes a wire hole through which a drawing line of a wire for forming the coil passes, and a concavity that is formed at a bottom surface of the base member, at least a part of the concavity being arranged at a position that is radially outside of the outer diameter portion of the magnet, wherein the drawing line of the wire passes through the wire hole and is arranged along the bottom surface of the base member to a wiring member to which the drawing line of the wire is connected at the concavity at the bottom surface of the base member at a position that is outside of the outer diameter portion of the magnet in the radial direction, and wherein the wiring member is positioned radially outside the wire hole. | ||
| 地址 | Shizuoka JP | ||