JPH0135809Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a hose end removal tool for a gas valve used when replacing the hose end of the gas valve.

[Prior art and its problems]

The hose ends of gas valves are manufactured separately during the manufacturing process, and then assembled later using screws. and,
There are two types of gas valves: one that is just a hose end, and the other that when a rubber tube is connected, it is pushed in against the inner wall of the rubber tube to open the internal valve and allow gas to flow. There is a device called a spring collar that has a structure in which when the hose comes off from the hose end, it pops out by the force of a spring and closes the valve.

Currently, the above two types of gas valves are used together in modern houses due to the timing of their installation.

In addition to the above-mentioned spring callan type safety mechanism, gas valves also have internal safety valves that act on the differential pressure that acts before and after the gas valve when the flow rate of gas passing through the gas valve exceeds a predetermined flow rate. There is also a gas valve with an over-flow prevention mechanism that uses the force of the gas to float up to the valve seat and stop the gas, and this gas valve is also installed in general houses along with the two types of gas valves mentioned above. .

When considering the prevention of gas accidents, among the three types of gas valves mentioned above, those with an overflow prevention mechanism are designed to prevent raw gas from flowing out if the gas hose is cut or the gas hose comes off at the appliance side. Because it operates, it is much safer than a gas valve called Ganekaran, which does not operate in such cases.

From this point of view, as a measure to prevent gas accidents, if the gas valve does not have an overflow prevention mechanism, it is desirable to replace it with one that has an overflow prevention mechanism. , which places an economic burden on consumers.

Therefore, in the case of a gas valve without an overflow mechanism, there is a proposal to incorporate an overflow prevention mechanism into the hose end as a means of ensuring the same safety as one with an overflow mechanism. Figure 5 shows
This is an example of this proposal, and its external shape is large enough to fit inside the hose end, and when there is excessive outflow, the differential pressure causes the valve 01 to move against the spring 02 and come into close contact with the valve seat 03. This is the structure.

This overflow prevention mechanism does not pose any problem with gas valves that are not spring-curling type, as they can be fitted directly into the hose end from the end.
In the case of a spring collar, because of this spring-type safety mechanism, the inner diameter is too small to fit inside the hose end, so the hose end must be removed and replaced with a hose end that does not have a built-in spring. There is.

Conventionally, when removing the hose end from a gas valve, the gas valve side was secured with pliers and loosened by tightening the hexagonal screwdriver on the hose end side, but by adopting this method, the chrome plated There is a problem that the gas valve gets damaged and there is a high possibility that the threaded part of the pipe becomes loose and gas leaks.

[Purpose of this invention]

The present invention was proposed in view of these points, and the purpose is to propose a tool for removing the hose end of a gas valve, which can be easily loosened without damaging the gas valve or affecting the piping. be.

[Structure of the present invention]

As a technical means to achieve the above object, the present invention integrally combines a hand vise for fixing the gas valve body and a hexagonal ratchet trench having an engaging part that engages with the hexagon of the hose end. First, fix the gas valve body with a hand vise, engage the hexagonal ratchet trench with the hexagon of the hose end,
Move the hexagonal ratchet lever to loosen the hose end.

After loosening and removing the hose end in this way, attach a hose end without a spring, and insert the excess flow prevention mechanism into the newly installed hose end from its tip to complete the assembly. It is.

〔Example〕

FIG. 1 shows an embodiment of the tool according to the present invention, in which 1 is a hand vise with a structure in which a gripping part 3 opens and closes around a shaft 2, and 4 is a hexagonal engagement member fixed to the side of the hand vise 1. In this member, a rotating body 5 having a hexagonal portion 7 formed on the inner surface is mounted on a bearing 6.
It is rotatably incorporated through the

8 is a hexagonal ratchet trench having a ratchet 9 coupled to the rotating body 5, 10 is a ratchet gear, and 11 is a ratchet pawl.

The tool according to the embodiment has the above configuration,
As shown in Figures 2 and 3, attach the gas valve a to the hose end b with the hand vise 1 side facing inside, fix the gas valve a using the hand vise 1 with your left hand, and use the hexagonal latch with your right hand. Rotate the trench 8. In this way, the rotating body 5 rotates via the ratchet 9, and when the rotating body 5 rotates, the hexagon c of the hose end b engaged in the hexagonal part 7 of the rotating body 5 rotates. As a result, the hose end b becomes slack and can be removed as shown in FIG.

In addition, by making the hexagonal ratchet trench switchable between forward and reverse, it can also be used for tightening the hose end b.

[Effects of this invention]

As described above, the present invention combines the hand vise 1 and the hexagonal ratchet trench 8 into a hose end removal tool, so that the hose end b can be easily removed while fixing the gas valve a with the hand vise 1. Since the gas plug a is fixed with the hand vise 1, the gas plug a is not damaged and the piping side is not affected in any way.

[Brief explanation of the drawing]

Fig. 1 is a front view of the hose end removal tool according to the present invention, Fig. 2 is a side view, Fig. 3 is a cross-sectional view of the main parts with the hose end removed, and Fig. 4 is a front view of the hose end removal tool according to the present invention.
The figure is a side view of the gas valve and the hose end with the hose end removed from the gas valve, and FIG. 5 is a side view of the overflow prevention mechanism used by being incorporated into the hose end. 1... Hand visor, 4... Hexagonal engaging member, 5
...Rotating body, 8...Hexagonal ratchet trench, 11
...Ratchet claw, a...Gas valve, b...Hose end, c...Hexagon.

Claims (1)

[Scope of utility model registration request] A hand vise for fixing the gas valve body,
A hose end removal tool for a gas valve, which is integrally coupled with a hexagonal ratchet trench having an engaging part that engages with a hexagonal part of the hose end of the gas valve.