JP2007327300A - Drain socket and toilet bowl installation structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain socket making siphon starting sufficiently quick, and also to provide a toilet bowl installation structure using the drain socket. <P>SOLUTION: The drain socket 20 comprises: a first cylinder part 21 into which a drain port 4 is inserted from above; an annular radial part 23 projecting in a diameter reducing direction with respect to the first cylinder part 21; a second cylinder part 22 extending downward from the inner peripheral side of the radial part 23; and an orifice plate 30 or the like locked to the radial part 23 and fixed with an adhesive or the like if necessary. The orifice plate 30 has: an annular part 31 on the outer peripheral side; a short cylindrical annular wall part 32 hanging from the inner peripheral end of the annular part 31; and an annular projecting part 33 connected to the lower end of the annular wall part 32. The projecting part 33 is located in a position lower by the height ΔH portion of the annular wall part 32 than the annular part 31 which is a stepped part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drain socket for connecting a drain port of a toilet and a drain pipe. The present invention also relates to a toilet installation structure using this drain socket.

  A typical conventional example in which the toilet outlet is connected to a drain pipe by a drain socket (described in the column of the prior art in Japanese Patent Laid-Open No. 8-260551 and FIG. 6) will be described with reference to FIG.

  A toilet bowl 2 of a toilet (western-style toilet) 1 communicates with a drain outlet 4 via a trap 3. The drain port 4 has a cylindrical shape, and is open downward with the cylinder axis direction as a substantially vertical direction. The drain socket 10 includes a first cylinder part 11 into which the drain port 4 is inserted from above, a second cylinder part 12 connected to the first cylinder part 11 via a step part 13, and the second cylinder part 12. An orifice 14 provided at the lower end, an outer cylinder 15 surrounding the second cylinder portion 12, and the like are provided. An outer peripheral cylindrical portion 11 a is integrally provided on the outer periphery of the upper portion of the first cylindrical portion 11, and a packing 18 is pushed in between the outer peripheral cylindrical portion 11 a and the first cylindrical portion 11.

  The step portion 13 has an annular shape extending from the lower end of the first tube portion 11 in the direction of diameter reduction (inward). The second cylinder portion 12 extends downward from the inner peripheral end of the step portion 13. The orifice 14 is formed in a ring-shaped bowl shape projecting from the lower end of the second cylinder portion 12 in the diameter reducing direction. The outer cylindrical body 15 is continuous with the lower end of the first cylindrical portion 12. The lower end of the outer cylinder 15 is in contact with the floor F of the toilet room.

  The drain port 4 is inserted into the first cylinder portion 11 from above. The inner peripheral lip portion of the annular packing 18 attached to the upper end of the first cylindrical portion 11 is in watertight contact with the outer peripheral surface of the drain port 4.

  A lower portion of the second cylindrical portion 12 is inserted from above into a drain pipe 19 protruding from the floor surface F.

  When flush toilet bowl wastewater flows into the drain socket 10, a part of the water hits the orifice 14 and bounces inward, so that the drain socket 10 and the vicinity of the drain port 4 become full. After that, when the full water falls, a siphon discharge flow is formed in the trap 3.

  In FIGS. 1-3 of the said Unexamined-Japanese-Patent No. 8-260551, in order to form this siphon discharge | emission flow early, the cyclic | annular overhang | projection part is provided in the diameter reduction direction in the upper part of the 2nd cylinder part 12. FIG. It is described. The upper surface of the projecting portion is flush with the stepped portion 13.

FIG. 3 shows the drain socket 10A described in FIG. 2 of the same publication, and reference numeral 17 denotes an overhanging portion. The other structure of the drain socket 10A in FIG. 3 is the same as that of the drain socket 10, and the same reference numerals indicate the same parts.
JP-A-8-260551

  As in the above-mentioned JP-A-8-260551, in the drainage socket in which the overhanging portion 17 is provided on the upper part of the second cylindrical portion 12, when the upper surface of the overhanging portion 17 is flush with the stepped portion 13, Part of the water falling from the mouth is bounced back by the overhanging portion 17, passes through the gap between the lower end of the drainage port 4 and the stepped portion 13, and the outer peripheral surface of the drainage port 4 and the first cylindrical portion 11. There was a risk that the siphon start-up would not be fast enough because the drainage socket was filled with water. An object of the present invention is to provide a drainage socket that can be activated quickly and a toilet installation structure using the drainage socket.

  The drainage socket of the present invention is a drainage socket attached to a drainage port that opens downwardly from the toilet bowl, and includes a first tube portion into which the drainage port is inserted from above and a lower end of the first tube portion. An annular step projecting in the reduced diameter direction, a second cylindrical portion extending downward from the inner periphery of the step portion, and an annular projecting projecting in the reduced diameter direction from the upper portion of the second cylindrical portion In the drain socket having a portion, the overhanging portion is provided below the stepped portion.

  The height difference between the overhanging portion and the stepped portion is preferably about 3 to 10 mm.

  The toilet installation structure of this invention connects the drain outlet and drainage pipe of a toilet bowl using this drain socket of this invention.

  According to the present invention, since the overhanging portion is provided below the stepped portion, the water hitting the overhanging portion is prevented or suppressed from escaping to the outer periphery of the drain outlet. As a result, siphon activation is sufficiently quick.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 (a) is a longitudinal sectional view showing a drain socket according to an embodiment, FIG. 1 (b) is a sectional view taken along line BB of FIG. 1 (a), and FIG. 1 (c) is an orifice plate. FIG.

  The drain socket 20 includes a first cylindrical portion 21 into which a drain port 4 (shown by a two-dot chain line in FIG. 1B) is inserted from above, and a diameter-reducing direction with respect to the first cylindrical portion 21. An annular radial portion 23 that protrudes, a second cylindrical portion 22 that extends downward from the inner peripheral side of the radial portion 23, and a radial portion 23, and is fixed by an adhesive or the like as necessary. The orifice plate 30 is provided. Similar to FIG. 2, an outer peripheral cylindrical portion 21 a is provided on the upper outer periphery of the first cylindrical portion 21 so that packing can be attached.

  As for this 2nd cylinder part 22, the axial center line direction is curving in quadrant arc shape, and the drain port 24 has faced the side.

  A pedestal cover portion 26 is provided so as to extend the first tube portion 21 downward, and a base portion 27 is connected to the lower end of the pedestal cover portion 26. This base part 27 is installed on the floor surface of a toilet room.

  The orifice plate 30 locked to the radial portion 23 includes an annular part 31 on the outer peripheral side, a short cylindrical annular wall part 32 depending from the inner peripheral end of the annular part 31, and the annular wall part 32. And an annular projecting portion 33 that is continuous with the lower end. The annular portion 31 overlaps the upper surface of the radial portion 23. The intersection of the inner peripheral edge of the radial portion 23 and the upper end of the second cylindrical portion 22 is a shallow shelf-like portion 25 extending in the circumferential direction, and an overhanging portion is formed on the upper surface of the shelf-like portion 25. 33 are overlapping. As shown in FIGS. 4A and 4B, in most of the inner periphery of the upper end of the second cylindrical portion 22 excluding the drain port 24 side, the protruding portion 33 protrudes inward from the inner peripheral edge.

  In this embodiment, an annular portion 31 that overlaps the radial direction portion 23 constitutes an annular step portion that extends inward (in the reduced diameter direction) from the lower end of the first cylindrical portion 21. The projecting portion 33 is positioned lower than the annular portion 31 as the stepped portion by the height ΔH of the annular wall portion 32. This ΔH is preferably about 3 to 10 mm, particularly about 5 to 7 mm. The width from the inner peripheral edge of the overhang 33 to the annular wall 32, that is, the difference W between the inner diameter (radius) and the outer diameter (radius) of the overhang 33 is preferably about 5 to 15 mm, particularly about 8 to 12 mm.

  This drain socket 20 is used, for example, as disclosed in Japanese Patent Application Laid-Open No. 2004-197331, when the position of the drain outlet of the toilet is shifted from the position of the floor drain pipe. Is connected via a horizontal pipe (not shown) that is horizontal drawn along the floor surface. However, it is natural that the drain port 24 may face downward.

  In a toilet installation structure in which the toilet drain port 4 is connected to the drain pipe using the drain socket 20, the inner peripheral surface of the drain port 4 and the annular wall portion 32 of the orifice plate 30 are substantially flush with each other. Is preferred. That is, it is preferable that the inner diameter of the lower portion of the drain port 4 and the inner diameter 2 of the annular wall portion 32 are substantially the same. Moreover, it is preferable that the space | interval (height difference) of the up-down direction of the lower end of the drain port 4 and the annular part 31 is about 5-10 mm. This makes it easier for water from the drain port 4 to hit the overhanging portion 33, and makes it difficult for the water to go around to the outer peripheral side of the drain port 4.

  In the toilet bowl thus installed, when flushing the toilet bowl, a part of the water that has flowed down from the drain port 4 into the drain socket 20 via the trap hits the overhang 33 of the orifice plate 30, The first tube portion 21 and the toilet drain port 4 on the upper side thereof are filled with water, and a siphon is formed when the water falls.

  In this embodiment, the annular wall 32 is present on the outer periphery of the overhang 33 at the top of the drain socket 20, and the overhang 33 is lower than the annular portion 31 as a step by an amount ΔH. The water hitting the overhanging portion 33 is prevented or suppressed from entering the outer peripheral side of the drainage port 4, the vicinity of the first tube portion 21 of the drainage socket 20 and the vicinity of the drainage port 4 are quickly filled with water, and the siphon becomes early Formed.

  In the embodiment of FIG. 1, the overhanging portion 33 is formed by using the orifice plate 30, but the overhanging portion may be provided integrally with the drain socket.

  FIG. 4 is a longitudinal sectional view showing an example of this. In this embodiment, an orifice-like overhanging portion 14A is arranged on the upper part of the second cylindrical portion 12 in the drain socket 10 of FIG. In addition, although the orifice 14 at the lower end of the second cylindrical portion 12 is omitted, it may be installed. The height difference ΔH between the upper surface of the overhanging portion 14A and the upper surface of the stepped portion 13 is 3 to 10 mm.

  The other structure of FIG. 4 is the same as that of FIG. 3, and the same code | symbol has shown the identical part.

  Also in this embodiment, since the overhanging portion 14A is provided lower than the stepped portion 13 by ΔH, the same effect as the drain socket of FIG. 1 is achieved.

  Each of the above embodiments is an example of the present invention, and the present invention can take forms other than those shown in the drawings.

It is sectional drawing which shows the drain socket which concerns on embodiment. It is sectional drawing of the toilet installation structure which concerns on a prior art example. It is sectional drawing of the drain socket which concerns on a prior art example. It is sectional drawing which shows the drain socket which concerns on another embodiment.

Explanation of symbols

4 Drain port 10, 10A, 20 Drain socket 13 Step part 14A Overhang part 11, 21 1st cylinder part 12, 22 2nd cylinder part 30 Orifice plate 31 Circular part 32 Ring wall part 33 Overhang part

Claims (3)

A drain socket attached to a drain opening that opens downward in the toilet,
A first tubular portion into which the drainage port is inserted from above;
An annular stepped portion projecting from the lower end of the first tubular portion in the diameter reducing direction;
A second cylindrical portion extending downward from the inner periphery of the step;
A drainage socket having an annular projecting portion projecting in a reduced diameter direction from an upper portion of the second cylindrical portion, wherein the projecting portion is provided below the stepped portion.   The drainage socket according to claim 1, wherein a height difference between the projecting portion and the stepped portion is 3 to 10 mm.   A toilet installation structure in which a drain outlet of a toilet bowl and a drain pipe are connected via a drain socket, wherein the drain socket is the drain socket according to claim 1 or 2.

Images