| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a coupling device between tubular objects capable of connecting tubular objects easily and firmly. <P>SOLUTION: This coupling device is composed of hollow coupling bodies 20, 30, 40, 50 insertable into the inside of the tubular object 11 and screw bodies 26, 36, 46, 56 which are screw-fitted into predetermined sections of the coupling bodies 20, 30, 40, 50, pass through them, and are abutted on other sections from the inner side. The coupling bodies 20, 30, 40, 50 are enlarged and are brought into pressure contact with an inner face 11b of the tubular object 11 in accordance with increase of abutting pressure on the other sections by screw-fitting operation of the screw bodies 20, 30, 40, 50. By inserting the coupling bodies into the inside of a pair of tubular objects and enlarging the coupling bodies by screw-fitting the screw bodies, outer faces of the coupling bodies can be brought into pressure contact with inner faces of the tubular objects to prevent the coupling bodies from leaving the tubular objects by pressure contact friction force. The pair of tubular objects can be easily and firmly connected by the coupling device. <P>COPYRIGHT: (C)2004,JPO</p> |
