| 摘要 |
PURPOSE:To enable the practical high speed rotation of the titled apparatus, by interposing a push spring or employing a system carrying out transmission in a no-contact state with respect to a coupler transmitting the rotary force of a motor to a rotary reflector to reduce rotary noise or vibration. CONSTITUTION:A coupler 8 is constituted by arranging fan-shaped rotary shaft side metal fittings 10a, 10b screwed to the leading end of a rotary shaft 2 and fan shaped motor shaft side metal fittings 11a, 11b fixed to the leading end of the rotary shaft 9 of a motor on a same surface and push springs 13 are mounted to spot facing holes provided to the opposed side surfaces each metal fittings. Therefore, the rotary shaft side metal fittings 10a, 10b and the motor shaft side metal fittings 11a, 11b are connected by four push springs 13 having equal spring forces so as to form uniform gaps 12 therebetween. That is, the rotation of the rotary shaft 9 of the motor is transmitted to the rotary shaft 2 through the push springs 13. When the rotary shaft 2 and the rotary shaft 9 of the motor in this coupler 8 are formed from same thickness rods, the coupler 8 can be inexpensively fabricated because the shapes of the rotary shaft side metal fittings 10 and the motor shaft side metal fittings 11 are made with the identical shape. |
