| 摘要 |
<p>PURPOSE:To bend easily and to prevent the removal of a pipe securely by providing a bowl at a spigot of one side pipe, forming a faucet of the other side pipe to hold the bowl, providing a circular stopper around the faucet, and arranging balls to prevent the removal of the spigot, rotatable between the stopper and the bowl. CONSTITUTION:A spherical bowl 13 is provided in a spigot 12 of one side straight pipe 11. A faucet 15 of the other side straight pipe 14 is formed to cover the bowl 13. And a circular stopper 18 is provided to cover the periphery of the faucet 15, and plural balls 20 are provided between the inner surface of the stopper 18 and the outer surface of the bowl 13. The balls 20 are provided rotatable by abutting to the inner surface of the stopper 18, the outer surface of the bowl 13, and the end face of the faucet 15, so as to prevent the removal of the spigot 12. As a result, the removal of the spigot is prevented, and the coupling can be bent easily with a slight force by the rolling of the balls while abutting the outer surface of the bowl and the inner surface of the stopper.</p> |
