Step motor

Abstract

Abstract PURPOSE:To improve the positional accuracy of a stator by providing U-shaped stator pieces secured at the bottom to side plates, and housings having stator inserting slots passing through the stator pieces and coil containing slots. CONSTITUTION:A disc-shaped magnet 4 is mounted through a bush 3 on the shaft 2 of a rotor 1, and U-shaped stator pieces 17a, 17b are secured to stator inserting slots 9, 10 formed radially of housings 5, 6, and a coil containing slot 11 is formed. The housings 5, 6, and a coil containing slot 11 is formed. The housings 5, 6 are interposed between side plates 14 and 15 and integrally associated by a bolt. The stator pieces 17a, 17b have opposed ends 18, gap forming ends 19 and a bottom 23, a coil 20' is contained in the coil containing slot 11, and leads 21 are led. The ends 19 are opposed, epoxy resin is filled in the housings 5, 6, and integrally secured. Further, the bottom 23 is secured to the side plates 14, 15. Thus, the position of the stator 17 is decided by passing slits 22 of the plates 14, 15, thereby enhancing the positioning accuracy.

Inventors

• 👤 Kenichi Shimatani
• 👤 賢一 島谷

Bibliographic Details