MOTOR AND DISK DRIVE

• Main Author: IGUCHI TAKURO
• Format: Patent
• Language: English; Japanese
• Published: 02.04.2020
• 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

To provide a motor and a disk drive having high airtightness by pressing a shaft into a base part with high accuracy.SOLUTION: A motor for a disk drive comprises: a bearing mechanism 6 attached on a stationary part; and a rotational part 2 rotatably supporting the circumference of a center axis to the stationary part. The stationary part has a base part 40, and the base part comprises a concave part 401 which is part of a housing that forms an inner space sealed in the disk drive, which is concaved toward an outer side of the housing from the inner space, and which is not through. The bearing mechanism comprises: a shaft 10 extending in a center axis direction; and a sleeve surrounding at least part of an outer periphery surface of the shaft. A lower end part of the shaft is pressed into the concave part and is fixed by adhesion, and a lower surface of the base part has a base step part 43 concaved to an axial direction upper side.SELECTED DRAWING: Figure 3 【課題】ベース部に対してシャフトを精度良く圧入することで、気密性の高いモータおよびディスク駆動装置を提供すること。【解決手段】静止部に取り付けられた軸受機構６と、静止部に対して中心軸周りを回転可能に支持される回転部２と、を備えるディスク駆動装置用のモータであって、静止部は、ベース部４０を有し、ベース部は、ディスク駆動装置における密閉された内部空間を形成するハウジングの一部であり、内部空間側からハウジングの外側へ向かって窪み、かつ非貫通である凹部４０１を備え、軸受機構が、中心軸方向に延びるシャフト１０と、シャフトの外周面の少なくとも一部を囲むスリーブと、を備え、シャフトの下端部は、凹部内に圧入および接着により固定され、ベース部の下面は、軸方向上側へ窪むベース段部４３を有する。【選択図】図３