A quick coupling for a flexible tube has an outer annular element with a bayonet connection and a central bore which receives an annular insert having two arcuate sections and holding the flexible tube in place through barbs. The inserts are removable from the outer annular coupling by means of a detent at which point the arcuate sections may be easily removed from the flexible tube.

Provided is a hose joint that allows whether or not tightening has been completed to be determined. The hose joint includes: a nipple provided along an insertion space of the hose body, a sleeve deformable in a radial direction thereof and provided so as to surround an outer circumference of the insertion space of the hose body formed along an outer peripheral surface of the nipple, a plurality of separated holders provided outside the sleeve to cover an outer face of the sleeve in a circumferential direction thereof and be separable in the radial direction, and a tightening member provided to extend across the plurality of separated holders so as to move the individual separated holders closer together in the radial direction and cause diameter reduction of the sleeve, the hose joint further including a spacer disposed between each of the plurality of separated holders and the sleeve.

Provided is a hose joint that allows whether or not tightening has been completed to be determined. The hose joint includes: a nipple provided along an insertion space of the hose body, a sleeve deformable in a radial direction thereof and provided so as to surround an outer circumference of the insertion space of the hose body formed along an outer peripheral surface of the nipple, a plurality of separated holders provided outside the sleeve to cover an outer face of the sleeve in a circumferential direction thereof and be separable in the radial direction, and a tightening member provided to extend across the plurality of separated holders so as to move the individual separated holders closer together in the radial direction and cause diameter reduction of the sleeve, the hose joint further including a spacer disposed between each of the plurality of separated holders and the sleeve.

A hose joint sleeve includes a sleeve main body that is deformable in a radial direction and is provided to hold a flexible hose between the sleeve main body and a nipple of a hose joint. The hose joint sleeve is configured to press and tighten the flexible hose toward an outer peripheral surface of the nipple with radial contraction and deformation of the sleeve main body, so as to fasten the flexible hose to the nipple so as to prevent the flexible hose from slipping off by coupling a plurality of belt-like bodies divided in the same shape.

A hose joint sleeve includes a sleeve main body that is deformable in a radial direction and is provided to hold a flexible hose between the sleeve main body and a nipple of a hose joint. The hose joint sleeve is configured to press and tighten the flexible hose toward an outer peripheral surface of the nipple with radial contraction and deformation of the sleeve main body, so as to fasten the flexible hose to the nipple so as to prevent the flexible hose from slipping off by coupling a plurality of belt-like bodies divided in the same shape.