| 摘要 |
PROBLEM TO BE SOLVED: To eliminate any play between rotary shafts by fitting an engagement piece provided on one rotary shaft into an engagement part formed of tapered surfaces provided on the other rotary shaft, and pressing the engagement piece against the tapered surfaces by the urging force of a spring in a coupling structure of the rotary shafts. SOLUTION: The output side rotary shaft 2 is urged toward the input side rotary shaft 50 by a coned disk spring 28 disposed between a fitting plate 15 and a washer 24 fitted to the output side rotary shaft 2. The fitting plate 14 is displaced against the urging force of the coned disk spring 28 and fitted to a housing 48 with a pin 19 fitted to the output side rotary shaft 2 abutted on tapered surfaces 22 and 23 of a tapered groove 21 formed in the input side rotary shaft 50. The output side rotary shaft 2 and the input side rotary shaft 50 are coupled with each other without any play by the wedge action based on the urging force of the coned disk spring 28. |
