| 摘要 |
PURPOSE:To prevent an axial shifting in position due to thrust load by disposing axial fitting portions for torque transmission on the opposite end portions of a rotary shaft and connecting to each other screws usable in both opposite directions on the outer periphery of a shaft by means of a cylindrical coupling. CONSTITUTION:Fitting portions 21a, 22a respectively comprising a radial concave groove and a projection axially fitted in the groove are formed on the adjacent end surface portions of rotary shafts 21, 22 in such a manner as to transmit torque, and screws 21b, 22b usable in both opposite directions are disposed on the outer peripheries of the end portions, respectively. The rotary shafts 21, 22 are coupled to each other by a cylindrical coupling 23 having screws 23a, 23b formed at the inner peripheral portions of both end portions to be engaged with screws 21b, 22b. The coupling 23 is fixed to the rotary shaft 21 by a screw 25, so that it may be prevented from loosening. |
