DISK DRIVING DEVICE

• Main Author: NAGAI KAZUYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 16.02.2015
• 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 capable of reducing probability that unclean air leaks in the inside of the disk driving device, and easily achieving thinning.SOLUTION: A disk driving device 100 includes: a solid body including a base 4; a rotor; a fluid dynamic pressure bearing 48; a stator core 40 disposed in the base, and formed with an annular part and a plurality of salient poles; a coil 42 disposed in the stator core; and an annular magnet 32 formed with magnetic poles opposite to the salient poles. The fluid dynamic pressure bearing includes: a seal side surface opposite to a portion of the base via seal agent 94 in a radial direction; and an axial direction seal surface opposite to the other portion of the base via the seal agent in an axial direction. 【課題】ディスク駆動装置の内部に非清浄な空気がリークインする確率を低減でき、薄型化を容易にす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４を含む固定体と、ローターと、流体動圧ベアリング４８と、ベースに設けられ円環部と複数の突極を有するステータコア４０と、ステータコアに設けられるコイル４２と、突極と対向する磁極を有する環状のマグネット３２と、を備え、流体動圧ベアリングは、ベースの一部とシール剤９４を介して半径方向に対向するシール側面と、ベースの他の一部とシール剤を介して軸方向に対向する軸方向シール面と、を含む。【選択図】図２