| 摘要 |
PURPOSE: A coupling device for a nut is provided to easily fix the nut by vertically pressing a coupling pipe. CONSTITUTION: A coupling device for a nut comprises a main body(210), a female screw piece(220), a coil spring(230), and a guide cap(240). The main body comprises a female screw piece accommodating chamber(211) and a spring support(212) in the inner circumference. The female screw piece forms a female screw(201) which is coupled with a male screw in the inner circumference and forms slope(221) in the outer circumference. A pair of female screw pieces moves to the center of the main body and the outside of the center while ascending to the female screw piece accommodating chamber of the main body. |
