JPH0211680Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a hose grip member for tightly fastening and holding a hose to a connecting device having a tapered bulge. The present invention relates to a grip member in which a hose is pressed against a connecting portion by the lever action of a skirt member integrally formed on one side of the grip member.

[Background technology]

As a means to prevent leakage or disconnection of the hose connection, a tapered bulge is formed at the head of the hose joint, so that the hose fitted from the outside is hooked to the enlarged diameter bulge of the joint. Connection means are known. However, with this type of connection means, the hose simply engages with the enlarged diameter bulge of the joint, so when the internal pressure of the connection increases, the hose around the connection expands outward, and the fluid flows through the tapered surface. There is a tendency to penetrate beyond the connector shaft body side. Moreover, burrs and bulges in the axial direction are generally left on the connector shaft on the molding surface during molding, so that the tightness with the hose is not sufficient. For this reason, there was a problem in that the high-pressure fluid that entered the burr used a minute gap around the burr as a breakthrough and widened the gap between the shaft and the hose, causing water leakage and the hose falling off.

[Purpose of invention]

This invention was developed to solve the above problem, and aims to dramatically improve the pressure resistance of the hose connection by providing a hose grip that improves the sealing performance between the connection tool and the hose. It is.

[Summary of the idea]

A hose grip member fitted to the outer peripheral surface of a connecting device having a tapered bulging head according to the present invention. A plurality of skirt members that open radially outward with spaced apart from each other are integrally formed via a thin wall portion that can be bent inward, and a lateral protrusion is formed on the inner wall surface of the base of each skirt member, The tapered inner circumferential surface of the cylindrical part is engaged with the bulging part of the hose connection part, and each skirt member is tilted inward using the protrusion as a fulcrum, so that the hose is simultaneously pressed against the head and neck of the connection tool by lever action. It was designed to do so.

[Example of idea]

Embodiments of the present invention will be described below based on the drawings. In FIGS. 3a and 3b, 1 is a hose connector such as a joint or nipple having a bulging head 2 with a tapered tip, and 3 is a hose fitted on the outside of this connector 1. , a bulge 4 is formed on the outer surface of the hose connection part by the bulge head 2 of the connector 1.
is appearing.

The hose grip member 5 of the present invention is fitted around the outer periphery of the connection between the hose 3 and the connection tool 1 having the bulging head 2 of this type. A cylindrical portion 5a and a plurality of skirt members 5b, which are fitted into the cylindrical portion 5a, are integrally formed with a thin wall portion 5c interposed therebetween.

The cylindrical portion 5a of the grip member 5 has an inner circumferential wall surface formed into a tapered surface 6, so that when the hose 3 is inserted into the hose connector 1, the cylindrical portion 5a prevents the expansion of the connector 1. It is adapted to be locked to the bulge 4 of the hose connection portion which has been deformed by the protruding portion 2 .

The plurality of skirt members 5b are connected to the grip cylindrical portion 5a.
The slits 7 of a predetermined width are separated from each other from the enlarged diameter side periphery of the cylindrical portion 5a and the skirt member 5b.
As shown in Figures 2b and 2b, it is configured to be rotatable or foldable inward.

This thin part 5c is formed at a position corresponding to the top of the bulging part 4 of the connecting part when in use, so that when the skirt member 5b is bent inward, it extends backward from below the neck of the bulging part 4. They are now facing each other.

Further, a ridgeline-shaped protrusion 8 extending in the horizontal direction is integrally formed on the base of each skirt member 5b, that is, on the inner wall surface near the boundary with the thin wall portion 5c, and as shown in FIGS. 2a and 2b, the skirt When the member 5b is rotated in the horizontal direction in the figure, the protrusion 8 projects inside the cylindrical body of the grip member.

In the embodiment shown in FIGS. 4a and 4b, the corners of the skirt member 5b formed flat are formed into protrusions 8, and when the skirt member 5b is rotated in the horizontal direction, the corners become the thin-walled portions of the cylindrical body of the grip member 5. It is formed so that it protrudes inward.

In this way, the "protrusion 8" may have any structure as long as it protrudes inward from the thin cylindrical portion of the grip member when the skirt member is folded in the horizontal direction.

Reference numeral 9 denotes a sleeve made of metal or the like that is used as a member to squeeze the skirt member 5b of the grip 5 inward and hold it in a fastened state. This fastening and holding member is not limited to a sleeve, but a band or other appropriate fixing means may be used.

The material of the hose grip of the present invention is preferably synthetic resin such as hard nylon, and is preferably integrally molded.

Next, the operation of the present invention will be explained with reference to FIGS. 3a and 3b. As shown in FIG. 3a, after fitting the tip of the hose that has passed through the cylindrical portion 5a of the hose grip from the outside of the connector 1 having the bulged head 2, the hose grip 5 is slid toward the connector 1,
The inner wall tapered surface 6 of the cylindrical portion 5a is brought into contact with the bulging portion 4 of the connecting head. Next, when the skirt portion 5b of the hose grip 5 is folded back inward as shown in FIG. Push it into the neck of the connector 1 to press it.
At this time, the cylindrical portion 5a, which is connected via the thin wall portion 5c, is forcibly drawn toward the connecting tool 1 by the lever action when the skirt member 5b rotates. Therefore, the hose 3 of the connection part is simultaneously tightened by the grip member 5 around the head tapered surface of the connection tool 1 and the front and back of the neck. In this state, the hose grip 5 is fixed to the connection part. In the illustrated embodiment, a sleeve 9 made of metal or the like is provided on the outside of the grip member 5.
is fitted to hold the grip member 5 in a fastened state. In this case, it is preferable that the diameter of the sleeve 9 is reduced in advance at the tip, and after the sleeve 9 is installed at a predetermined position, the rear end is caulked. Of course, the grip is not limited to being fixed using a sleeve, but it is also possible to use a band or other suitable fixing means.

[Effect of idea]

As described above, the hose grip of the present invention can strongly tighten the hose to the tapered surface and neck of the head of the connector from both front and back sides using the lever action of the skirt member, thereby significantly enhancing the pressure resistance of the hose connection with simple operation. can do.

[Brief explanation of the drawing]

Fig. 1 is a central vertical cross-sectional view of the hose grip member according to the present invention, Fig. 2a is a rear end view with the skirt member closed, Fig. 2b is a cross-sectional view taken along the - line of Fig. 2a, Figs. 3a and 3b The figure is an explanatory diagram of the tightening operation to the connecting portion. Further, FIGS. 4a and 4b
4A and 4B show another embodiment of the present invention, in which FIG. 4a is a vertical cross-sectional view of the skirt member in an expanded state, and FIG. 4b is a vertical cross-sectional view of the skirt member in a closed state and fastened to the connecting portion. 1...Connection tool, 2...Bulging head, 3...Hose, 5...Hose grip, 7...Slit, 8
……protrusion.

Claims (1)

[Scope of utility model registration request] In a grip member that presses and engages a hose to the outer circumferential surface of a hose connector having a bulging head, a grip cylindrical body that comes into contact with the bulge 4 of the hose connector that has been deformed by the bulge head 2 of the connector 1. The inner circumferential wall of the portion 5a is formed into a tapered surface 2, and this cylindrical body portion 5
A plurality of skirt members 5b that open radially outward apart from the slit 7 are attached to the peripheral edge of the expanded diameter side of the thin wall portion 5.
c, and is integrally formed so as to be rotatable inwardly through the skirt member 5b, and is provided with a lateral groove on the inner wall surface of the base portion of the skirt member 5b, which abuts against the neck of the bulge portion 4 when the skirt member 5b is folded back inwardly. A grip member for a hose connection portion comprising a hose grip provided with a protrusion 8 and a fastening holding member for holding the skirt member 5b of the hose grip in an inward folded position.