JPH0315645Y2 - - Google Patents

Description

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

(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. As shown in Fig. 4, the water drain valve with a retractable outer shell pipe of Utility Model Application No. 61-084473 filed by the same applicant consists of an operating part 6, an outer shell pipe 7, and a lower part 8, and the lower part 8 has a water pipe attachment part 9,
Insert the outer pipe B20, which has a riser pipe mounting part 10, a drain valve 2, and an operating part 6 on the upper part, into the outer pipe A7, which has a lower part 8 below, and insert the cap nut 18, which is fitted into the outer pipe B20, and the upper and lower outer sides. The outer tube B2 is formed by the core 17 with tapers 15 and 16.
0 is fixed to the outer tube A7, and inside the outer tube A7 and the outer tube B20 there is a valve piece 13 connected to a long joint 14 through which a shaft 12 goes in and out, and an operating part 6.
The valve piece 13 connected to the shaft 12 is moved up and down by operating the handle 11 of the valve.
To extend or contract the entire length of the drain valve, first remove the operation part 6, loosen the cap nut 18, and then
Adjust the overall length of the drain plug to an appropriate length by raising and lowering it, and then tighten the cap nut 18. At this time, a tightening force is applied to the taper portions 15 and 16 of the core 17,
Therefore, a portion of the inner diameter of the core 17 is reduced and comes into contact with the outer periphery of the outer jacket tube B20. On the other hand, shaft 12
For expansion and contraction, 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 was attached.

(c) Problems to be solved by the invention However, expanding and contracting the outer tube was easily done by simply loosening the cap nut 18, but the operation part 6 of the shaft 12 was also removed and the outer tube was expanded and contracted. It was time consuming and troublesome to screw the shaft 12 into and unthread the joint 14 in accordance with the expansion and contraction. From that, outer shell tube B2
Just by raising and lowering 0, the shaft 12
There was also a request to easily extend and retract the entire length of the drain valve. The object of the present invention is to provide a telescoping drain plug that takes advantage of the advantages of Utility Application No. 61-084473 and completely eliminates the above-mentioned disadvantages.

(d) Means for solving the problem As shown in Fig. 2, the product of the present invention consists of an operating part 6, an outer shell pipe 7, and a lower part 8, and the lower part 8 has a water pipe attachment part 9, a riser pipe attachment part 10, An outer shell pipe B20 having a drain valve 2 and an operation part 6 on the top, and a lower part 8 on the bottom.
Insert into outer tube A7 having
The outer tube B20 is fixed to the outer tube A7 by the cap nut 18 fitted through the outer tube A7, and the core 17 having tapered parts 15 and 16 on the upper and lower outer sides.
7. Inside the outer shell pipe B20, the lower part 8 and the valve piece 13 are screwed together, and the opposite side is slightly smaller than the opposite side of the inner surface of the joint 14 that goes in and out of the long square pipe-shaped joint 14 connected to the valve piece 13 below the spindle 21. The shaft 12 had an angular shape.

(E) Function To expand and contract this invention, use the cap nut 18 as shown in the figure.
As you loosen the outer tube B20 and move it up and down,
Since the main body 22 of the operating section 6 and the spindle 21 connected to the shaft 12 are screwed together with the main body 22,
The shaft 12 is moved up and down by the amount that the outer shell tube B20 is moved up and down. When the outer tube B20 is set to the desired length and the cap nut 18 is tightened, force is applied to the tapered portions 15 and 16 of the core 17.
The inner diameter of the outer tube B20 is reduced, and the outer tube B20 is fixed in contact with the outer periphery of the outer tube B20. As a result, when the handle 11 is operated, the spindle 21 and the shaft 12 rotate, and the diagonal part of the shaft 12 is connected to the joint 14.
The valve piece 13 moves up and down while rotating in contact with the opposite side of the inner surface.

(F) Other Embodiments FIG. 5 shows another embodiment of the present invention. It had a square shaft 12 with a slightly smaller opposite side, but below the spindle 21 there is a square pipe with a slightly larger opposite side than the opposite side of the shaft 12 through which the square shaft 12 connected to the valve piece 13 goes in and out. A joint 14 of a shape is connected.

(g) Effects of the invention With this, the drain faucet installer can extend or contract the entire length of the drain faucet at the installation location by simply loosening the cap nut attached to the outer pipe, and then tightening the cap nut at the end. Fortunately, the troublesome extension and contraction of the shaft is no longer necessary, and the work time has become 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 an embodiment, Fig. 3 is an enlarged perspective view with a part of the joint cut away and the shaft is included, and Fig. 4 is a conventional diagram. Fig. 5 is a partially sectional front view showing a water drain plug with a retractable outer shell pipe, and Fig. 5 is a partially sectional front view showing another embodiment. In the figure, 7 is an outer tube A, 8 is a lower part, 12 is a shaft, 13 is a valve piece, 14 is a joint, 20 is an outer tube B, 21 is a spindle, and 22 is a main body.

Claims (1)

[Claims 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, a riser pipe attachment part 10,
Insert the outer tube B20 having the drain valve 2 and the operation 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 taper 15, 16 on the upper and lower outer sides. The provided core 17 fixes the outer tube B20 to the outer tube A7, and the outer tube A7 and the outer tube B20
Inside is a long joint 1 through which the shaft 12 enters and exits.
4, and the valve piece 13 connected to the shaft 12 moves up and down by operating the handle 11 of the operation part 6. In this drain valve, the lower part 8 and the valve piece 13 are screwed together. A telescoping drain plug has an angular shaft 12 whose opposite sides are slightly smaller than the opposite sides of the inner surface of the joint 14 that go in and out of a long square pipe-like joint 14 connected to a valve piece 13 below a spindle 21. 2. The telescopic device according to claim 1 of the utility model registration, which has a rectangular pipe-shaped joint 14 having an opposite side slightly larger than the opposite side of the shaft 12 through which the rectangular shaft 12 connected to the valve piece 13 enters and exits below the spindle 21. Water drain valve.