Motor

Abstract

Abstract PURPOSE:To improve abrasion resistance and corrosion resistance, by providing a sliding section between a rotor and a stator, with a plate-formed dynamic- pressure bearing made of hard ceramics material. CONSTITUTION:As one of end surfaces in the direction of the rotary shaft of a rotor 10, a rotating side sliding surface is formed to compose a brushless flat motor. The rotor 10 is composed of a yoke 1 made of dish-formed iron, a ring-formed permanent magnet 2 fitted and fixed on the yoke, and a ceramics plate 100 fitted firmly on both the component parts. For the ceramics plate 100, hard ceramics material is used, and on the flat surface of the side surface 9 of a stator, a groove for dynamic pressure generation is formed. On the other hand, on the side of the stator, a stator coil 4 is fixed at a fixing plate 6, and on the coil, the fixing side hearing 3 of the ceramics material is fixed. Besides, the bearing 3 and the sliding surface 9 are provided with recessed sections 11-12 to contain a small ball 7. Then, by the rotation of the rotor 10, the dynamic pressure of fluid 14 is generated on sliding sections, and the rotor 10 is levitated, and sliding resistance is lowered.

Inventors

• 👤 Shotaro Mizobuchi
• 👤 庄太郎 溝渕
• 👤 Toshiya Kanamori
• 👤 金森　利也
• 👤 Katsumi Sasaki
• 👤 勝美 佐々木
• 👤 Katsutoshi Chiba
• 👤 千葉　勝利

Bibliographic Details