JPH051745Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Field of industrial application This invention is a drain valve for draining water from pipes during cold seasons, and it relates to a method for easily expanding and contracting the entire length of the drain valve.

(b) Conventional technology In cold regions such as Hokkaido, water in water pipes often freezes during the cold season. As a countermeasure to this problem, drain valves have been devised that drain the water in the pipes into the ground below the freezing depth when people are out for long periods of time during the day or when they go to bed, and are now used in the majority of households. .

As shown in Figure 1, the plumbing in a typical home is as follows:
A water pipe 1 located underground below the freezing depth is connected to a drain valve 3 having a drain valve 2, and is led to a faucet 5 via a riser pipe 4 connected to the drain valve 3. The conventional water drain valve, as shown in Fig. 4, consists of an operating part 6, an outer pipe 7, and a lower part 8. The lower part 8 has a water pipe attachment part 9, a riser pipe attachment part 10, and a drain valve 2. Inside 7, there is a mechanism in which a valve piece 13 connected to a shaft 12 is moved up and down by operating the handle 11 of the operating section 6.

When installing this drain valve 3 in a home, the height of the floor of the drain valve varies depending on the house, so the height of the drain valve operating part 6 exposed above the floor also differs, and the installer must adjust the water drain valve to a predetermined height. The overall length of corkscrew 3 was either shortened or extended.

(c) Problems to be solved by the invention When the overall length of the drain valve 3 is to be shortened, the operating section 6 must be removed once, the outer pipe 7 and the shaft 12 cut, and the operating section 6 attached thereto by applying the necessary screws. Ta. If you wish to extend the length, remove the operating section 6, replace the outer tube 7 and shaft 12 with longer ones, apply the necessary screws there, and attach the operating section 6.
Both require disassembly, cutting, and screw cutting, which is extremely time-consuming, and the installer also requested an easier method.

The object of the present invention is to provide a drain plug that can be expanded and contracted over its entire length, eliminating the above-mentioned labor and effort by simple means.

(d) Means for solving the problem As shown in Figure 2, the product of the present invention consists of an operating part 6, an outer shell pipe 7, and a lower part 8. The lower part 8 has a water pipe attachment part 9, a riser pipe attachment part 10, In the drain valve, which has a drain valve 2 and inside which a valve piece 13 connected to a shaft 12 moves up and down by operating the handle 11 of the operating part 6, the outer pipe B20 having the operating part 6 on the upper side is connected to the outer pipe B20. A core 17, which is fitted into an outer tube A7 having a lower part 8, and which has tapered portions 15 and 16 on the upper and lower sides of the outer side into which the outer tube A7 is fitted, and a cap nut 1.
8, the outer tube B20 is fixed to the outer tube A7, a joint 14 for moving the shaft 12 up and down is provided inside the outer tube A7, and the shaft 12 is fixed with a nut 19.

(E) Function To extend or contract the entire length of the present invention, as shown in the figure, first remove the operating part 6, loosen the cap nut 18,
Move the outer shell pipe B20 up and down to make the overall length of the drain plug an appropriate length, and tighten the cap nut 18. At this time, a tightening force is applied to the core 17 at the tapered portion 15,
16, and therefore, a part of the inner diameter of the core 17 is reduced and comes into contact with the outer periphery of the outer tube A7. on the other hand,
To expand and contract the shaft 12, loosen the nut 19 above the joint 14, move the shaft 12 up and down to an appropriate length, and then tighten the nut 19. After that, the operating section 6 is attached.

(F) Embodiment An embodiment of this invention will be described with reference to the drawings.

First Embodiment FIG. 2 is a partially sectional front view showing a first embodiment of this invention. An outer pipe B20 having an operating part 6 with a handle 11 on the upper part is fitted over the outer pipe A7 which has a lower part 8 having a water pipe attachment part 9, a riser pipe attachment part 10, and a drain valve 2 below. , an outer upper and lower tapered part 1 that fits into the outer tube A7
5 and 16, and a cap nut 18 having a tapered portion opposite to the tapered portion 16, and the cap nut 18 is screwed into the outer shell tube B20. In addition, there is a shaft 12 in the outer pipe A7 that connects the handle 11 and the valve piece 13 in the lower part 8, and a long joint 1 with screws at both ends passes through the shaft 12 in the middle.
4 and a shaft 12 is screwed onto the shaft 12, and the shaft 12 is fixed with a nut 19.

To expand and contract the outer pipe of the drain valve, first remove the operating part 6, loosen the cap nut 18, move the outer pipe B20 up and down, make the overall length of the drain valve an appropriate length, and then tighten the cap nut 18. At this time, a tightening force is applied to the tapered portions 15 and 16 of the core 17, so that a portion of the inner diameter of the core 17 is contracted and comes into contact with the outer periphery of the outer shell tube A7, resulting in a nearly fixed state.
For the shaft 12, loosen the nut 19 above the joint 14, screw the shaft 12 together, move it up and down, and tighten the nut 19 to an appropriate length. After that, the operating section 6 is attached.

Second Embodiment FIG. 5 is a partially sectional front view showing a second embodiment of this invention. In the first embodiment, outer tube B20
was inserted from above the outer tube A7, and the outer tube B20 and the outer tube A7 were fixed by the core 17 fitted through the outer tube A7 and the cap nut 18, but the outer tube B20 was inserted from above the outer tube A7. , a cap nut 18 fitted into the outer tube B20, and a core 17
The outer tube B20 and the outer tube A7 are fixed together.

(g) Effects of the invention According to this invention, the drain faucet installer can use the parts of the invention as they are to expand and contract the entire length of the drain faucet at the installation location, and only need to loosen and tighten the parts, and eliminate unnecessary parts. do not need. Also,
Work hours also became faster.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing piping in a general household, Fig. 2 is a partially sectional front view showing the first embodiment, Fig. 3 is a sectional front view enlarging a part of the first embodiment, and Fig. 4 is a partial sectional front view showing the first embodiment.
The figure is a partially sectional front view showing a conventional drain plug, and FIG. 5 is a partially sectional front view showing a second embodiment. In the figure, 7 is an outer tube A, 12 is a shaft, 14 is a joint, 15 and 16 are tapered portions of the core, 17 is a core, 18 is a cap nut, and 20 is an outer tube B.

Claims (1)

[Scope of Claim for Utility Model Registration] 1 Consists of an operating part 6, an outer shell pipe 7, and a lower part 8, and the lower part 8 includes a water pipe attachment part 9 and a riser pipe attachment part 1.
0, has a drain valve 2, and a shaft 12 inside the outer pipe 7 by operating the handle 11 of the operating section 6.
In the drain valve where the valve piece 13 connected to the valve moves up and down, the outer pipe B20 having the operating part 6 on the
Fit it into the outer tube A7 having a lower part 8 below,
A core 17 with tapered parts 15 and 16 on the upper and lower outer sides and a cap nut 18 are fitted into the outer tube A7.
The outer pipe B20 is fixed to the outer pipe A7, a joint 14 for moving the shaft 12 up and down is provided inside the outer pipe A7 and the outer pipe B20, the shaft 12 is fixed with a nut 19, and the drain plug can expand and contract the outer pipe. 2. Insert the outer tube B20 having the operating part 6 on the upper side into the outer tube A7 having the lower part 8 below, and insert the cap nut 18 fitted into the outer tube B20 and the core 17 with tapered parts 15 and 16 on the upper and lower outer sides. A drain plug with an extendable outer shell pipe according to claim 1 of the patent registration claim, in which the outer shell pipe B20 is fixed to the outer shell pipe A7.