JPH0222549Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in the structure of a hose end connector used when connecting a gas hose to a hose end of a gas appliance.

[Prior art]

Conventionally, this type of hose end fitting A' has a fifth
As shown in the figure, a fitting tube 2 and a hose connection tube 3 are provided in the connector main body 1, and a seal ring 4' is attached to the step between the fitting tube 2 and the hose connection tube 3. 2, the end of the hose end 6 is inserted into the fitting tube 2, and the tip of the hose end 6 is brought into elastic contact with the seal ring 4', as shown in FIG. The connection was made by tightening the setscrew 5.

[Problem that the invention attempts to solve]

In the above conventional example, when the hose end 6a having an outer diameter that is approximately the same as the inner diameter of the fitted tube 2 is inserted and connected, the sixth
When connected as shown in Figure a, there is no gap between the outer periphery of the hose end 6a and the inner periphery of the fitted tube 2, so the hose end 6a does not wobble, but as shown in Figure 6b, a hose with a small outer diameter When the ends 6b are connected, a gap is created between the outer periphery of the hose ends 6b and the fitting tube 2, causing the hose ends 6b to wobble, causing a problem that hose ends 6 having different diameters cannot be connected.

[Means to solve problems]

The hose end connector A of the present invention has an annular seal ring 4 mounted approximately in the axial center of a fitting tube 2 into which a hose end 6 is inserted, and a diameter of the inner periphery of the seal ring 4 is reduced. A tightening ring 10 is attached to the outer periphery of the seal ring 4, and a sliding ring 7 is attached to the seal ring 4. A spring 8 is installed inside the tube 2 to be slidable in the axial direction, and a spring 8 is installed inside the tube 2 so as to be able to slide freely in the axial direction. By configuring as described above, the problems of the conventional example are solved. In other words, when the hose end 6b with a small diameter is inserted, the tip of the hose end 6b is inserted into the sliding ring 7, and the sliding ring is connected between the tip of the hose end 6b and the inner circumference of the fitted tube 2. 77, there is no gap and the hose end 6b does not rattle, making it possible to connect hose ends 6 of different diameters without rattling.

〔Example〕

As shown in FIGS. 1 and 2, the connector main body 1 is formed by integrally providing a fitting tube 2 and a hose connecting tube 3. As shown in FIGS. A mounting groove 9 is bored in the inner peripheral surface of the cylinder 2 in the axial direction.
A seal ring 4 made of an elastic material such as rubber is attached to the holder. A tightening ring 10 is attached to the outer periphery of the seal ring 4, and is biased so that the elastic contact portion 4a on the inner periphery is reduced in diameter. A sliding ring 7 is located on the back side of the elastic contact portion 4a of the seal ring 4.
A stepped portion 11 between the fitted tube 2 and the hose connection tube 3 and the sliding ring 7
A spring 8 for biasing the sliding ring 7 toward the opening side of the fitting tube 2 is interposed between the inner end surface and the inner end surface.
The outer diameter of the sliding ring 7 is approximately the same as the inner diameter of the fitted cylinder 2. A female threaded hole 13 is provided radially through the open side of the fitting tube 2, and a set screw 5 is screwed into this female threaded hole 13. The hose ends 6 include a hose end 6a with a large diameter and a hose end 6b with a small diameter, both of which are provided with a wavy portion 12 consisting of a peak portion 12a and a trough portion 12b on the outer periphery. However, when the hose end 6a with a large diameter is inserted into the fitting tube 2, the tip of the hose end 6a does not enter the sliding ring 7 as shown in FIG. 3, and the sliding ring 7 resists the spring 8. The seal ring 4 is pushed inward, and the elastic contact portion 4a of the seal ring 4 comes into elastic contact with the valley portion 12b. In this state, the set screw 5 is tightened and fixed. Further, when the hose end 6b with a small diameter is inserted into the fitting tube 3, the tip of the hose end 6b enters the sliding ring 7 as shown in FIG. comes into ballistic contact with. In this state, tighten the setscrew 5 to fix it. Therefore, there is no gap between the hose end 6b and the fitted tube 2 in the sliding ring 7, and the hose end 6b does not wobble. At this time, if a spacer tube 14 is interposed between the base of the hose end 6b and the opening side of the fitted tube 2, the hose end 6b will be further prevented from shaking.

[Effect of idea]

The present invention is constructed as described above, so when a hose end with a large diameter is inserted into the fitted cylinder, the tip of the hose end pushes the sliding ring and enters the inside, and the seal ring comes into elastic contact with the hose end. When the hose end with a small diameter is inserted into the tube to be fitted, the tip of the hose end enters the sliding ring and the seal ring is connected elastically to the outer periphery of the hose end. Even if the hose ends have different diameters, the hose ends can be connected without rattling, and multiple types of hose ends can be connected with one type of hose end connector.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway exploded perspective view of an embodiment of the present invention, Fig. 2 is a sectional view of the same hose end connector, and Fig. 3 is a partially cutaway front view of the same thick hose end connected. Figure 4 is a partially cutaway front view of the same thin hose end connected, and Figure 5 is
The figure is a cross-sectional view of a conventional example, and FIGS. 6a and 6b are cross-sectional views of a conventional thick hose end connected and a thin hose end connected, and 2 is a fitted tube;
4 is a seal ring, 7 is a sliding ring, 8 is a spring, and 10 is a tightening ring.

Claims (1)

[Scope of utility model registration request] An annular seal ring is installed approximately in the axial center of the tube into which the hose end is inserted, and a tightening ring is installed around the outer periphery of the seal ring to bias the inner periphery of the seal ring to reduce its diameter. The hose end with a small diameter is inserted inside the hose end, and the hose end with a large diameter is equipped with a sliding ring that comes into contact with the end surface so as to be able to slide freely in the axial direction on the back side of the seal ring, and the sliding ring is covered with the sliding ring. A hose end connector that has a spring built into the back of the fitted tube that biases the opening side of the fitted tube.