SPINDLE MOTOR AND HARD DISK DRIVE DEVICE

• Main Authors: NAKASHIMA DAIGO, SHOWA HIDEAKI
• Format: Patent
• Language: English; Japanese
• Published: 03.06.2021
• 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 spindle motor which secures the thickness of a base part in a land part and secures rigidness, and improves sealability by a sealing agent by securing the length of an open hole provided in the base part for inserting a lead wire.SOLUTION: A base part 101 has an annular recessed part 101b accommodating at least a part of a flange part 113 in an axial direction, an open hole 120 into which a lead wire 105 drawn from a coil 104 arranged further inside in a radial direction than the annular recessed part 101b is inserted, and a first recessed part 101c accommodating a flexible printed board 20 and the lead wire 105 in the axial direction. The first recessed part 101c has a land part 22 provided in the flexible printed board 20, and a second recessed part 101d accommodating a solder part 23 connecting the land part 22 and the lead wire 105 in the axial direction at a position avoiding the annular recessed part 101b and the open hole 120.SELECTED DRAWING: Figure 6 【課題】ランド部におけるベース部の厚さを確保して剛性を確保するとともに、リード線を挿通させるためにベース部に設ける貫通孔の長さを確保して封止剤による密閉性を向上させたスピンドルモータを提供する。【解決手段】ベース部１０１は、軸方向においてフランジ部１１３の少なくとも一部を収容する環状凹部１０１ｂと、環状凹部１０１ｂよりも半径方向内側に配置されコイル１０４から引き出されたリード線１０５を挿通させる貫通孔１２０と、フレキシブルプリント基板２０とリード線１０５とを軸方向において収容する第１凹部１０１ｃとを備えている。第１凹部１０１ｃは、フレキシブルプリント基板２０に設けたランド部２２と、ランド部２２とリード線１０５とを接続する半田部２３とを軸方向において収容する第２凹部１０１ｄを、環状凹部１０１ｂおよび貫通孔１２０を避けた位置に備えた。【選択図】図６