| 摘要 |
PURPOSE:To clamp a pair of front and rear shafts without generating an excess tensile stress at a rotor by providing the shafts having threaded portions in through holes inserted into the through hole of the rotor and engaged with each other and collars to be engaged with both ends of the rotor. CONSTITUTION:A ceramic rotor 10 has a through hole 11 at the center, and collar retainers 12a, 12b provided at both ends of the hole 11. Male threads 15 are formed at one end of a front shaft 13, and female threads 16 to be engaged with the threads 15 are formed at one end of a rear shaft 14. Collars 17, 18 are respectively formed on the outer peripheries of the shafts 13, 14, and a detent 19 is formed on the collar 18 of the shaft 14. Thus, the rotor 10 can be couped with a steel shaft without generating an excess tensile stress at the rotor. |
