JPH0231675Y2 - - Google Patents

Description

[Detailed explanation of the idea] <Industrial application field> The present invention relates to a hose joint.

<Conventional technology> A conventional hose joint has a main body with a nipple portion formed to have approximately the same diameter as the inside diameter of the hose, and a joint body that is wrapped around the outside of the hose and is connected to the tip of the nipple portion to move the hose inward. It is composed of a sleeve having a pressing part for pressing, and a hose nut that is screwed onto the joint body and compresses the sleeve in the radial direction.

This hose joint is made by fitting the hose into the nipple part, fitting the hose nut wrapped around the hose into the joint body, and tightening it.
The sleeve inside the hose nut tightens the outer circumference of the hose to prevent gaps between the outer circumferential surface of the nipple and the inner circumferential surface of the hose, thereby preventing leakage of liquid and gas as well as preventing the hose from coming off.

However, when attaching the hose to the nipple, a dedicated hose joint that matches the inner diameter of the hose must be used. For that reason,
When installing hoses with different inner diameters, a dedicated hose fitting that matches the inner diameter is required separately, so it is necessary to prepare various types of hose fittings for different types of hoses with different diameters, which increases costs. Not only this, but also the usability is extremely poor.

<Problems to be Solved by the Invention> The problems to be solved by the invention are to provide a hose joint that allows hoses with different inner diameters to be connected to the same joint.

<Means for solving the problems> The technical measures taken by the present invention to solve the above problems include providing a fitting part for attaching a small diameter hose on the outer peripheral surface of the first half of the nipple part of the joint body, and A bamboo-shaped cylindrical part is provided on the outer peripheral surface of the part,
The bamboo shoot part of the large-diameter hose mounting cylinder part gradually becomes larger in diameter toward the rear end, and the sleeve attached to the outside of the nipple part has the above-mentioned small-diameter hose mounting fitting part and large-diameter hose mounting cylinder part. A corresponding pressing portion is provided, and a hose nut for pressing the sleeve in the radial direction is screwed onto the joint body.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Figures 1 and 2 show a state in which two resin hoses with different diameters are connected to a hose joint so that they can be exchanged. In the figures, 1 is the joint body, 2 is the sleeve, 3 is the hose nut, and 4 , 5 are a large-diameter hose and a small-diameter hose with different diameters, and the joint body 1 includes a nipple portion 6 having a circular cross section, and a hose nut carved on the outer periphery of the base side of the nipple portion 6. 3, and a connecting threaded part 8 for connecting the joint body 1 to a hose connecting device, and a small-diameter hose fitting is provided on the outer peripheral surface of the front half of the nipple part 6. A joining part 9 is provided, and a bamboo-shaped large-diameter hose attachment cylindrical part 10 is provided on the outer peripheral surface of the rear half.

The fitting part 9 for attaching a small diameter hose is constructed by forming an annular recess 11 on the outer periphery of the front half of the nipple part 6, and fitting a wide cylindrical packing 12 into the annular recess 11. , by fitting the hose 5 to the gasket 12,
A small diameter hose 5 can be fitted into the small diameter hose attachment fitting part 9 of the nipple part 6.

The large-diameter hose attachment cylindrical part 10 has several bamboo shoots 13 protruding annularly from the outer peripheral surface of the rear half of the nipple part 6, and the diameter of the several bamboo shoots 13 gradually increases toward the rear end. By fitting the hose 4 to the outer periphery of this bamboo-like portion 13, the hose 4, which has a larger diameter than the hose 5, can be fitted into the large-diameter hose mounting cylindrical portion 10 of the nipple portion 6. It can be installed.

The sleeve 2 is made of a desired material such as synthetic resin and has a cylindrical shape with an inner diameter slightly larger than the outer diameters of the two hoses 5 and 4, and is connected to the fitting portion of the gasket 6 for attaching the small diameter hose. A pressing portion 14 is provided on the inner circumferential surface portion corresponding to the cylindrical portion 9 and the large-diameter hose attachment cylindrical portion 10, respectively.
15 is formed protrudingly, and the peripheral wall is made with cuts 16 at only one place over the entire length in the longitudinal direction to make the cross section approximately C-shaped, and the other peripheral walls are made with cuts at predetermined intervals except for the base side. 16 is formed so that it can be compressed and deformed in the radial direction.

The pressing parts 14 and 15 are formed to protrude over the entire inner peripheral surface at the front end and rear end of the sleeve 2,
By rotating the hose nut 3, the small diameter hose 5 fitted to the nipple part 6 is connected to the small diameter hose fitting part 9 of the nipple part 6, or the large diameter hose 4 is inserted into the fitting part 9 for fitting the nipple part 6.
are brought into close contact with the large-diameter hose attachment cylinder portion 10 of the nipple portion 6 without any gaps.

Further, at the rear end of the inner circumferential surface of the sleeve 2, an annular rib 19 is formed protrudingly, with which the end of the large-diameter hose 4 comes into contact. In addition to regulating the amount of fitting when the sleeve 2 is fitted into the nipple part 6 of the joint body 1,
Used to fix and hold on the outside. Furthermore, a large-diameter hose pressing protrusion 20 is provided protrudingly on the outer circumferential surface of the sleeve 2 at a portion of the rear end of the sleeve 2 that faces the pressing portion 15 . Then, the tapered surface 17 of the inner circumferential surface of the hose nut 3 is closely fitted to the outer circumferential surface of the sleeve 2 at the portion where the pressing portion 14 of the front end is protruded, and the hose nut 3 is screwed into the joint body 1.

The hose nut 3 has a tapered surface 17 on the front half of its inner circumferential surface that gradually becomes smaller in diameter toward the tip, and has a tapered surface 17 on the inner circumferential surface facing the male threaded portion 7 of the joint body 1. A female threaded portion 18 is formed, the front end of the sleeve 2 is tightly fitted onto the tapered surface 17 of the female threaded portion 18, and the female threaded portion 18 of the hose nut 3 is screwed into the male threaded portion 7 of the joint body 1.
By rotating this hose nut 3, the sleeve 2 is contracted in the radial direction.

Next, how to use the hose joint of this embodiment will be explained.

When attaching a large diameter hose 4 to a hose joint as shown in FIG. The hose 4 is fitted and mounted between the pressing part 15 protruding from the hose and the large-diameter hose attachment cylinder part 10 of the nipple part 6, and the female threaded part 18 of the hose nut 3 is connected to the male thread of the joint body 1 By tightening the sleeve 2 to the portion 7, the sleeve 2 is contracted and deformed in the radial direction, and the holding portion 1 of the sleeve 2 is tightened.
5, press and hold the hose 4.

Also, as shown in Fig. 2, when attaching a small diameter hose 5 to a hose joint, first tighten the hose nut 3.
After inserting the small diameter hose 5 into the nipple part 6
The hose 5 is fitted between the pressing part 14 protruding from the inner peripheral surface of the front end of the sleeve 2 attached to the sleeve 2 and the fitting part 9 for attaching a small diameter hose of the nipple part 2, and the hose nut 3 is attached to the coupling body 1. By tightening the hose 5, the sleeve 2 is contracted and deformed in the radial direction, and the hose 5 is held down and held by the holding portion 14 of the sleeve 2.

<Operations/Effects> Since the present invention is constructed as described above, it has the following advantages.

By fitting and attaching a small diameter hose to the small diameter hose fitting fitting part of the nipple part, or a large diameter hose to the large diameter hose fitting cylinder part of the nipple part, hoses with different diameters can be combined into one. Can be connected to multiple hose fittings. Therefore, instead of connecting two hoses with different diameters to two dedicated hose joints as in the past, it is now possible to commonly connect the two hoses to one hose joint. It is possible to provide a hose joint that is not only extremely economical and cost-effective, but also has improved usability, without requiring various types of hose joints for various types of hoses with different sizes.

[Brief explanation of drawings]

The drawings show the hose joint of the present invention. Figure 1 is a cross-sectional view showing a case where a large diameter hose is connected to the hose joint, Figure 2 is a cross-sectional view of Figure 1, and Figure 3 is a cross-sectional view showing a case where a small diameter hose is connected to the hose joint. FIG. 4 is a cross-sectional view taken from FIG. 3, and FIG. 5 is an exploded perspective view. In the figure, 1...joint body, 2...sleeve, 3
. . . Hose nut, 6 . . . Nipple, 9 . . . Fitting portion for attaching a small diameter hose, 10 .

Claims (1)

[Scope of utility model registration request] A fitting part for attaching a small diameter hose is provided on the outer circumferential surface of the first half of the nipple part of the joint body, and a bamboo-shaped cylindrical part is provided on the outer circumferential surface of the rear half, and the bamboo-like part of the cylindrical part for attaching the large diameter hose is attached to the rear part. The diameter is gradually increased toward the end, and furthermore, the sleeve attached to the outside of the nipple part is provided with a pressing part corresponding to the fitting part for attaching the small diameter hose and the cylindrical part for attaching the large diameter hose, and the sleeve is A hose joint characterized in that a hose nut that presses in the radial direction is screwed onto the joint body.