DISK DRIVING DEVICE

• Main Authors: IWAI HIROSHI, TASHIRO TOMOYUKI, WATANABE TAKANORI
• Format: Patent
• Language: English; Japanese
• Published: 06.11.2014
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

PROBLEM TO BE SOLVED: To provide a disk driving device in which decrease in torque is reduced to stabilize rotations of a recording disk while the thickness of the disk driving device is reduced.SOLUTION: A disk driving device 100 includes: a base member 3; a hub 4 on which a recording disk 1 is placed; a fluid dynamic pressure bearing unit 5; a spindle driving unit 6 which rotationally drives the hub 4; and a wiring member 26 disposed on a second surface of the base member 3. The base member 3 includes: a wire hole into which a wire forming a coil 12 is inserted; a second surface side recessed region which is recessed in an axial direction on the second surface; and an inclined region 3F which gradually moves away from the hub 4 in the axial direction from the second surface side recessed region toward a surface on which an opening of the wire hole is provided. The wiring member 26 includes an inclined portion 26F disposed in an inclined region 6. The wire is led out to the second surface of the base member 3 passing through the wire hole to be connected with the wiring member 26 in a region on the second surface that is located at the radial outer side relative to an outer diameter of a magnet 21. 【課題】ディスク駆動装置をより薄くしつつ、トルクの低下を軽減し、記録ディスクの回転を安定させるディスク駆動装置を提供する。【解決手段】ディスク駆動装置１００は、ベース部材３と、記録ディスク１を載置するハブ４と、流体動圧軸受ユニット５と、ハブ４を回転駆動するスピンドル駆動ユニット６と、ベース部材３の第２面に配設される配線部材２６と、を備え、ベース部材３は、コイル１２を形成するワイヤを挿通するワイヤ孔と、第２面において軸方向に凹む第２面側凹み領域と、第２面側凹み領域からワイヤ孔の開口が設けられる面に向かって徐々に軸方向でハブ４から遠くなる傾斜領域３Ｆと、を有し、配線部材２６は傾斜領域６に配設される傾斜部分２６Ｆを有し、ワイヤは、ワイヤ孔を通じてベース部材３の第２面に導出されて、第２面のうちマグネット２１の外径より径方向外側の領域において配線部材２６に接続される。【選択図】図２