JPS6348088U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a half-sectional view of a coupling according to an embodiment of the present invention, FIG. 2 is a perspective view of the ring claw of FIG. 1,
Figure 3 is a sectional view taken along the - line in Figure 2, Figures 4 to 6.
The figure is an explanatory diagram of how to use the coupling shown in FIG. 1. [Explanation of symbols] 1...male tube, 2...female tube, 3...base end, 4...distal end, 5...one end, 6...other end, 7
... Convex portion, 8... End face, 9... Stopper surface, 10... Extension part, 11... Groove, 12... Ring claw, 13... Rear surface, 14
...Release ring, 15...Ring piece, 16, 17...Spring accommodation groove, 18, 19...Tension spring, 20...First side wall, 21...First side part, 22... Second side wall, 23... Second side part, 24... Pointed edge, 25... Arc-shaped surface portion,
26... Locking surface, 27... Locking stage, 28... Sealing material,
29...Elastic material, 30...Snat spring.

Claims (1)

[Claims for Utility Model Registration] A male tube to which a hose is connected to the proximal end side, and a female tube to which the distal end of the male tube is inserted into one end side and connected, the distal end of the male tube A flange-like protrusion that can be accommodated inside the female pipe is formed on the outer periphery of the part, and the male pipe is located on the inner side of the female pipe through which the male pipe is refluxed. An annular groove that can surround the outer periphery of the male tube is formed at a position near the proximal end, and a ring-shaped ring claw having an inner diameter smaller than the outer diameter of the convex portion is accommodated in this groove, This ring claw is composed of a plurality of ring pieces divided into desired lengths, and its outer periphery is supported by a spring, so that when the male tube is inserted into the female tube, the convex portion After passing through the convex part, it contracts in the radial direction and returns to the normal position where it can be locked to the rear surface of the convex part, allowing it to pass through the male tube. preventing prolapse of the male tube;
Further, a release ring is slidably fitted on the outer periphery of the male tube at a position closer to the proximal end than the position of the protrusion, and the release ring has an outer diameter equal to or greater than the outer diameter of the protrusion. and when the male tube is slid in the axial direction of the male tube so as to come into contact with the rear surface of the convex portion, the circular pawl is expanded to cause the same circular pawl to separate from the rear surface of the convex portion, In the hose coupling which thereby enables the male pipe to be pulled out from the female pipe, the outer circumferential surface of each ring piece constituting the ring claw includes:
A plurality of parallel spring accommodating grooves are formed in common to each of the spring accommodating grooves, and C-shaped snap spring-like compression springs that tighten the respective ring pieces together are respectively fitted into these spring accommodating grooves. Among the tension springs, those closer to the proximal end of the male tube have a weaker tightening force than those closer to the distal end, so that when the male tube is inserted into the female tube, the ring claw Of each ring piece, the part that is bound by the tension spring with the weaker tension is first expanded in the radial direction by the convex part with a weak force, and then tightened in order by the stronger tension spring. A hose coupling that is characterized by a portion that expands in the radial direction.