JPS6317916Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present application relates to a one-touch joint used for large-diameter hoses, and is particularly aimed at a one-touch joint for hoses used for emergency drainage such as during floods.

Traditionally, one-touch joints for hoses include the one-touch method known as the Machino method, which is typical for fire hoses, which uses a combination of a spring mechanism and a claw locking mechanism, and the one-touch lever coupling method, which allows joints to be made by operating a lever. ,
Alternatively, a screw-in method is well known. However, all of these methods are used for small-bore hoses with a diameter of less than 100 mm, and only medium-bore hoses with a maximum diameter of 200 mm are commercially available. This is thought to be due to the fact that when the diameter is larger than 200 mm, the required wall thickness of the joint itself becomes thicker, and the larger diameter makes it difficult to handle manually, especially in the case of an emergency. . Therefore, the emergence of a one-touch joint for large diameter hoses, which can be carried into narrow spaces by a small number of people in the event of a flood or fire, is compact for transportation and storage, does not require tools for hose connection, and is highly speedy. was desired.

The present invention was developed as a result of intensive improvement research aimed at meeting these needs.
We have succeeded in providing a one-touch joint for large-diameter hoses that is relatively lightweight and has excellent operability.

The configuration of the present application will be explained in detail based on the drawings.
FIG. 1 is a cross-sectional view of the one-touch joint of the present invention, in which a groove 3 into which an O-ring 2 is fitted is provided in a male fitting 1 near the tip, and a groove 3 in which an O-ring 2 is fitted is provided on the circumferential surface away from the groove. A protrusion 4 is provided.
The O-ring 2 is for the purpose of achieving a sealing effect when inserted into the female fitting, so the O-ring 2 is inserted into the groove 3.
The O-ring is sized so that the outer diameter of the O-ring when fitted is larger than the outer diameter of the male fitting 1 and the inner diameter of the connecting fitting part of the female fitting. The O-ring material is not particularly limited as long as it bends when inserted into the female metal fitting and exhibits a sealing effect with its restoring force, but general-purpose rubber or plastic is suitable. The protrusion 4 serves both as a stopper when inserting the female fitting and as a lock for the coupling holder, and is joined to the circumferential surface of the male fitting by a known method such as welding.

The female fitting 5 has an annular body 6 having an inner diameter slightly larger than the outer diameter of the male fitting 1 at the end on the side where it fits with the male fitting 1.
are joined to form a fitting part, but the main body of the female metal fitting 5 itself has the same inner and outer diameters as the male metal fitting 1. This is necessary to prevent pressure loss and other problems when fluid is pumped when connected and used, and it is especially important to take this into consideration when draining water during a flood, as it contains many foreign substances. It is a must. A projection 7 is provided on the outer peripheral surface of the annular body 6 by known means such as welding so as to correspond to the projection 4 on the outer peripheral surface of the male metal fitting 1. A coupling guide 8 is joined to the tip of this projection so as to form a U-shaped cross section. The tip of the coupling guide 8 in the longitudinal axis direction is dimensioned so that it reaches or approaches the protrusion 4 provided on the outer peripheral surface of the male fitting 1 when both the male and female fittings are fitted and connected. ing. This coupling guide 8 is connected to the claw 1 of the coupling holder 9 during connection or separation.
This serves as a guide for sliding the 0. Therefore, it is convenient to finish the surface as smooth as possible.

The coupling holder 9 has a protrusion 4 on the male fitting 1.
It has a claw 10 that locks to a projection 7 provided on an annular body 6 for fitting a female metal fitting, and a claw 10' that locks to a protrusion 7 provided on an annular body 6 for fitting a female metal fitting. The distance between the outer sides of the corresponding protrusions 4 and 7 of both male and female fittings is set to be slightly larger than that when the annular body 6 of the female fitting is connected and the tip of the annular body 6 of the female fitting contacts the protrusion 4 of the male fitting.

Both the male and female metal fittings are fitted and connected, and the claws 1 of the coupling holder are inserted into the corresponding protrusions 4 and 7 of both metal fittings.
0 and 10', the outer peripheral surface of the coupling holder is covered with a band-shaped coupling rubber 11 to fix the coupling holder itself. In addition, when the coupling method is such that the coupling holder 9 and the band-shaped coupling rubber 11 are bonded together, the claws 10 and 10' of each coupling holder are moved back onto the annular body 6 in advance. After inserting into male metal fitting 1 and female metal fitting 5, tighten each claw 1.
It is preferable to fit them into the protrusions 4 one by one.

Iron is preferred as the material for both the male and female fittings and the coupling holder used in this application, but any metal other than iron may be used. If used for medium or small diameter hoses,
It is also possible to use fiber-reinforced plastics such as FRP instead. Furthermore, there are no particular restrictions on the material of the band-shaped coupling rubber, as long as it has enough tightening force to prevent the coupling holder from falling off during use. An endless band with a circumference approximately approximating the outer circumference of the hose fitting used with a width of 100 to 120 m/m and a width of 100 to 120 m/m is used. In addition, it is preferable to use the couplet ring holder by adhering it to the band-like rubber with adhesive in advance so that the coupler holder will not be lost when disassembled and stored.
It can also be used without adhesive.

The one-touch joint of this application is normally used by connecting to a rubber hose, but for emergency drainage, which is the purpose of this application, it is loaded onto a small truck of about 1 ton, transported to the required location, and then delivered to the desired length at the site. Since it is required that the hose can be connected and used in a short time, the length of the individual units of the hose itself is 2
A length of about 5 m is used. Therefore, in order to achieve the commonly used length of 30 to 50 m, it is necessary to
It is required to be able to connect around 15 units on-site in a short time with a small number of 2-3 people. It is said that the weight that can be handled by two to three people is preferably 100 kg or less per unit of connected hose. There are no conventional one-touch joint fittings on the market that are larger than 200mmφ.
Comparing the weight per unit of the currently commercially available flange type fittings and the one-touch joint of the present application, the weight per unit is 70 kg for the general-purpose flange type, whereas the one-touch joint of the present application weighs 70 kg. If you add 47kg of the weight of the 2m hose, which is about 30kg at 40kg, the general-purpose flange method is
The weight is 117Kg, whereas the one-touch joint of this application weighs 87Kg, which is ideal for emergency use.
One unit weighs less than 100 kg and can be handled by three people.

Furthermore, by providing the coupling guide 8 in the circumferential direction of the female fitting, the claws 10 of the coupling holder 9 can be locked to the projections 4 provided on the male fitting by simply pushing and sliding them by hand. Since the coupling is fixed by the pressing force generated by the extension of the band-shaped coupling rubber 11 covering the outer peripheral surface of the coupling holder, there is no need to use any tools. When removing the coupling holder after use, the coupling rubber stretches and can be easily removed by pulling it slightly with your hand.

The method of the present invention also has the advantage that it can be handled simply by increasing or decreasing the number of coupling holders depending on the outer diameter of the hose and the operating pressure. Furthermore, as the outer diameter of the hose increases, the weight of the fittings and the hose itself increases, making it easy to damage the joint fittings during transportation or connection. The band-shaped coupling rubber acts as a shock absorber, and is effective in preventing damage over a long period of time, making it ideal for use in large-diameter drainage hoses in emergencies where there are many impactful objects, such as water damage. This can be said to be a suitable and useful invention as a one-touch joint.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the connecting portion between the male fitting and the female fitting of the one-touch joint of the present application, and FIG. 2 is a front view as seen from the male fitting side. 1...Male fitting, 2...O-ring, 3...O-ring groove, 4...Protrusion of male fitting, 5...Female fitting, 6
...Annular body of female metal fitting, 7...Protrusion of female metal fitting, 8...
...Cup ring guide of female metal fitting, 9...Cup ring holder, 10, 10'...Claw of coupling holder, 11...Cup ring rubber.

Claims (1)

[Scope of utility model registration request] In a joint consisting of fittable cylindrical male and female fittings and a coupling holder, the male fitting is equipped with an O-ring and a protruding stopper, and the female fitting is equipped with a protrusion for locking the coupling holder and the tip of the protrusion. After forming a U-shaped cross section with the coupling guide joined to the coupling guide, and inserting and fitting the male fitting into the female fitting, at least two This one-touch joint for a large-diameter hose is characterized in that the claws of more than one coupler holder are fitted into the claws, and the outer peripheral surface of the coupler holder is covered and fixed with a band-shaped coupler rubber.