JPH0144658Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a drain pipe connection device for a drain.

<Prior Art> Conventionally, drain pipes of drains are connected by screwing the upper end of the drain pipe into a female screw formed on the inner periphery of a cast drain tray. By the way, the drain pipe may have to be tilted due to installation errors with other connecting members, or an earthquake may occur while it is attached, and in this case, the drain pipe may not be fixed. In addition, since the upper end of the drain pipe is fixed to the drain tray, there is no place to absorb its tilting and vertical vibrations, and this puts stress on the connection, causing the drain pipe to curve and damage around the drain. This may cause cracks in the concrete in some areas.

Therefore, Utility Application No. 58-73578 (Utility Application No. 59-179916)
As disclosed in the above-mentioned No. 1, a connecting cylinder piece made of cast metal is fitted with a short pipe screwed onto the lower screw of the drain tray, and an annular packing having a number of tongues for draining suspended from the inner periphery of the upper part. is screwed onto the upper end of the drain pipe, and the annular packing is fitted onto the short pipe to enable sliding between the connecting short pipe and the annular packing, thereby reducing the gentle slope of the drain pipe. It has been proposed that vibrations caused by an earthquake are absorbed by the sliding motion and the elastic force of the packing.

By the way, such a configuration requires a short pipe,
The number of parts increases, and each part must be fixed with screws, resulting in a troublesome installation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drain pipe connection device that can eliminate the above-mentioned drawbacks.

<Means for solving the problem> The present invention has a drain pipe protruding from the lower surface of the drain tray, and an annular packing having a draining tongue protruding from the inner peripheral surface is fitted into the fitting groove. The drainage connecting ring is fitted onto the drain pipe portion with an insertion gap between the drain pipe portion and the drain pipe portion, and is fixed to the lower surface of the drain tray.

<Function> With the above configuration, the drain tray and the drain connection ring are integrated. Therefore, a drain connection ring is placed in the installation hole of the floor wall, and the drain tray is constructed on the floor wall.

After fixing the saucer, the upper end of the drain pipe is inserted into the drain pipe insertion gap formed between the drain connection ring and the downflow pipe ring. In this inserted state, the drain pipe is tightly fitted into the annular packing, drained, and supported by sufficient holding force.

<Embodiment> An embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a drain tray, which is formed by drawing or pressing a stainless steel plate, and has a dish shape whose diameter expands upward. A mounting stage 2 for mounting a strainer 23 to be described later is formed on this plate surface, and a nut piece 4 is fixed to the mounting stage 2, and a nut piece 4 is used for attaching an intermediate plate 20 to be described later. A bolt 3 is screwed and protrudes. Further, an anchor 5 is vertically provided on the lower surface thereof by the same means. Furthermore, around the water outlet 7 in the center of the drain tray 1, a flow pipe part 9 is formed which projects downward.

Reference numeral 10 denotes a drain connection ring whose upper end is fixed to the lower surface of the loading stage 2. Such a drain connection ring 10 is
An annular insertion gap s is formed between the downstream pipe part 9 and the drain connecting ring 10, which are arranged concentrically around the circumference of the downstream pipe part 9, into which the drain pipe x is inserted.

Like the drain tray 1, the drain connecting ring 10 is formed by drawing or pressing a stainless steel plate, and as shown in FIGS. An annular fitting groove 11 is formed. Further, a mounting flange 12 is formed at the upper end thereof to be bent outward, and the mounting flange 12 is used to connect to the lower surface of the drain tray 1 described above.

The fitting groove 11 is fitted with an annular packing 13 having a wavy surface 14 formed on its outer circumference and two tongue pieces 15 projecting upwardly and downwardly on its inner circumferential surface through an adhesive 16. It will be worn. The wavy surface 14 increases the contact area with the adhesive 16, so that the fitting groove 11 and the annular packing 13 are watertightly fixed, and even if the adhesive 16 breaks, the wavy surface 14 This results in a water blocking effect.
Therefore, even if the drainage of the lower drain pipe x becomes poor in the connected state described later and water flows back upward, water leakage from the fitting groove 11 is prevented as much as possible.

Next, referring to FIG. 3, the connection of the drain pipe x will be explained.

The drain tray 1 is attached to the floor wall y, and its tray surface is exposed on the floor wall y. A drain connection ring 10 fixed to the lower surface of the drain tray 1 is driven into the floor wall y, and the anchor 5 described above is attached to the floor wall y. is maintained by That is, the attachment hole z is defined by the drain connection ring 10.

When the drain pipe x is inserted into the insertion gap s in this state, the annular packing 13 of the drain connecting ring 10 is fitted onto the upper end of the drain pipe x, and the drain pipe is maintained. Further, even if water flows upwardly in the drain pipe x due to the tongue piece 15, the annular gasket 13 prevents water from leaking as much as possible.

In addition, the outer diameter of the drain pipe x is determined by JIS standards, but the drain pipe x is made of various materials such as vinyl chloride and stainless steel, and due to differences in wall thickness due to the material, The inner diameter is non-uniform.
However, due to the clearance of the insertion gap s, any material can be inserted, and it can be supported by the annular packing 13 while maintaining watertightness.

Furthermore, in this embodiment, since the drain tray 1 and the drain connecting ring 10 are made of steel plates, the wall thickness is smaller than that of conventional castings. Therefore, the water outlet 7 can have a sufficient diameter, and the attached hole z
The drain connecting ring 10 can be fitted without enlarging the diameter of the drain connecting ring 10.

After such construction, as shown in FIG. 3, in the case of a roof drain, a middle plate 20 is placed on the loading step 2 of the drain tray 1, sandwiching the waterproof sheet 19 laid on the floor wall y, and then installed. Pass the mounting bolt 3 through the mounting hole, screw the nut 21 on, and attach the middle plate 20.
is connected to the drain tray 1. Next, a strainer 2 is formed by drawing or pressing a stainless steel plate to create a large number of water holes 22 on the outer periphery.
3 is placed on the vehicle and fixed by the middle plate 20 and bolt/nut mechanism 24. Thus, the strainer 23 and the drain tray 1 are connected.

<Effects of the invention> As described above, the present invention arranges the drain connection ring 10 around the downstream pipe part 9 of the drain tray 1 with an insertion gap s, and inserts the drain pipe x into the insertion gap s. Since it is inserted and held in a watertight manner by the annular gasket 13 of the drain connection ring 10, the drain pipe x can be tilted and slid without impairing its watertightness, and the number of parts is small, making it economical. Moreover, since the drain pipe x can be connected only by inserting it into the insertion gap s, there are excellent effects such as facilitating the connection work on the spot.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal side view of the drain tray 1, FIG. 2 is an enlarged longitudinal side view of the drain connecting ring 10, and FIG. 3 is a longitudinal side view of the drain tray in an installed state. . 1; Drain saucer, 9; Downstream pipe section, 10; Drain connecting ring, 11; Fitting groove, 12; Mounting collar, 13; Annular packing, s; Insertion gap, x; Drain pipe, y; Floor wall, z; Attached hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A drain connecting ring having a drain pipe portion protruding from the lower surface of the drain tray, and an annular packing having a draining tongue protruding from the inner circumferential surface fitted into a fitting groove. ,
A drain pipe connecting device for a drain, characterized in that the drain pipe is fitted onto the lower surface of the drain tray by creating an insertion gap between the drain pipe and the downstream pipe portion, and is fixed to the lower surface of the drain tray. 2. A drain pipe connection device for a drain according to claim 1), wherein the saucer and drain connection ring are formed of a steel plate such as stainless steel.