LIQUID BEARING, MOTOR, AND POLYGON MOTOR

• Main Authors: AKIYAMA SHUJI, YAMAMOTO MICHIHARU, SAKURAGI KATSUNORI
• Format: Patent
• Language: English; Japanese
• Published: 03.09.2015
• Subjects: BEARINGS; BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a liquid bearing that can increase reliability, and to provide a motor and a polygon motor.SOLUTION: A liquid bearing 30 includes: a sleeve 32 including a bearing hole 41; a shaft 13 inserted into the bearing hole 41 and rotatable relative to the sleeve 32; and a thrust cover 33 covering a lower end part of the bearing hole 41 and fixed to the sleeve 32; and oil 31 filled between the sleeve 32 and the shaft 13. The bearing hole 41 includes: an upper part 41a having a single diameter; a lower part 41b present in the lower end part of the bearing hole 41 and having a diameter similar to the single diameter; and a groove 35 provided between the upper part 41a and the lower part 41b. 【課題】信頼性を向上することのできる流体軸受、モータ、およびポリゴンモータを提供する。【解決手段】流体軸受３０は、軸受孔４１を含むスリーブ３２と、軸受孔４１内に挿入され、かつスリーブ３２に対して回転可能であるシャフト１３と、軸受孔４１の下端部を覆い、かつスリーブ３２に固定されるスラストカバー３３と、スリーブ３２とシャフト１３との間に充填されたオイル３１とを備える。軸受孔４１は、一の直径を有する上部分４１ａと、軸受孔４１の下端部に存在し、一の直径と同等の直径を有する下部分４１ｂと、上部分４１ａと下部分４１ｂとの間に設けられた溝３５とを含む。【選択図】図２