| 摘要 |
PURPOSE:To threadedly engage even with female/male thread without cutout and engage or diengage a coupling by small rotational movement angle by constituting the coupling of a thrust receiving part, a male threaded part provided with at least one thread cutout part by a plane in parallel with the thread axis or a curved plane, and a female threaded part corresponding to this. CONSTITUTION:In engagement of male and female threaded parts 1, 2, the thread ridge part of the male threaded part 1 is inserted into the cutout part 8 of the female threaded part 2 in parallel, and the thrust receiving part 3 of the male threaded part 1 is contacted with the extreme end of the female threaded part 2. Next the male threaded part 1 is rotationally moved by 90 deg., and hence the thread ridge part is threadedly engaged with the thread root part of the female threaded part. When one way torque and/or thrust is transmitted, the male and female threads are firmly journaled through the thrust receiving part 3, and hence they are surely transmitted. Relative rotationally moving angle of the threads is set in the range 5 deg.-180 deg. after fit-in. Hence the female male threaded parts can be engaged with usual male/female threaded parts without cutout, and engaging/disengaging can be performed by small rotational movement angle less than 180 deg.. |
