JP2006097270A - Penetrating fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a penetrating fitting which is secured to a floor pan of a prefabricated bathroom, and can positively prevent leakage from an upper portion of the floor pan to a lower portion of the same. <P>SOLUTION: The floor pan 2 of a prefabricated bath 1 has a through hole 2a formed therein, and a water leading pipe 5 for water or hot water is erected from an underfloor space to an above-area space via the through hole 2a, followed by mounting the penetrating fitting 10 in the through hole 2a, for supporting the water leading pipe 5. The penetrating fitting 10 is formed of a cylindrical member 11 secured to the floor pan 2, a fixing nut 17 for clamping the cylindrical member 11 to the floor pan 2, a waterproof packing 21 housed in the cylindrical member 11, and supporting the water leading pipe 5, and a retaining nut 24 for securing the waterproof packing 21 to the cylindrical member 11. Then the waterproof packing 21 is exposed to an upper portion of the penetrating fitting, at a location between the water leading pipe 5 and the retaining nut 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a through metal fitting that vertically penetrates a water supply pipe and a hot water supply pipe in a floor pan such as a unit bath.

Conventionally, the floor pan of a unit bath has been provided with a through-hole for penetrating a water or hot water pipe, and the through-hole is attached to the through hole so that the pipe does not vibrate. Has been. There exists patent document 1 in a well-known thing as such a through metal fitting. In this Patent Document 1, the through metal fittings cover the opening of the floor pan provided in the bathtub installation part, and the inner diameter of the inner rib formed on the inner peripheral surface is set to a water pipe such as a water supply pipe or a hot water supply pipe. A sponge packing having an inner diameter smaller than the outer diameter of the water pipe is set in advance, and the sponge packing is fitted on the inner rib so that the inner diameter of the sponge packing is passed through. The water pipe is configured to be in close contact with the outer periphery of the water pipe to stop the water.

FIG. 8 of Japanese Patent Laid-Open No. 2003-64747

  In the above case, since the sponge packing is accommodated in a state where a space is formed in the upper part inside the through metal fitting, water accumulates in this space along the water pipe. Thus, if the state where water accumulates on the upper part of the sponge packing continues, it is extremely unsanitary. And even if the sponge packing is normally attached to the inner rib, if you use a faucet, the water pipe will vibrate vigorously because the pressure increases temporarily when water is discharged or stopped, and the water hammer phenomenon occurs. A gap between the water pipe and the sponge packing is widened, and water enters the lower part of the sponge packing from the gap. In this case, the sponge packing is in close contact with the outer peripheral surface of the water pipe. However, if the water pipe vibrates vigorously, the sponge packing alone cannot maintain the water tightness with the water pipe, and the water will flow under the floor pan. It will reach. In another embodiment, silicon is filled on the upper surface side of the sponge packing in order to ensure more reliable water stoppage with the water pipe, but the workability is poor. Furthermore, generally, the lower part of the floor pan is not visually observed, and even if the lower part of the floor pan is soaked in water, it cannot be found and there is a risk of causing enlarged damage.

  The present invention has been made paying attention to such problems existing in the prior art, and the problem is that, in the through metal fitting fixed to the floor pan of the unit bathroom, from the upper part to the lower part of the floor pan. It is to provide a through metal fitting that can reliably prevent water leakage.

  In order to achieve the above object, in the invention described in claim 1, a through hole is formed in the floor pan of the unit bath, and a water or hot water pipe is started up from the floor to the floor through the through hole. A through metal fitting for supporting the water pipe is attached to the through hole. The through metal fitting is accommodated in a cylindrical member fixed to the floor pan, a fixing nut for fastening the cylindrical member to the floor pan, and the inside of the cylindrical member. A waterproof packing for supporting the water pipe and a press nut for fixing the waterproof packing to the cylindrical member, wherein the waterproof packing is exposed to the upper part between the water pipe and the press nut. is there.

  According to a second aspect of the present invention, in the through metal fitting according to the first aspect, a support member for supporting the water pipe is accommodated in the lower part of the waterproof packing inside the cylindrical member.

  According to a third aspect of the present invention, in the through metal fitting according to the first or second aspect, a conical surface is formed on the upper surface of the waterproof packing.

  In the invention according to claim 1 of the present invention, the waterproof packing is exposed to the upper part between the water pipe and the holding nut, and the water transmitted through the outer peripheral surface of the water pipe flows down from the waterproof packing to the floor pan. However, the water does not accumulate in the upper part of the penetrating metal and become dead water, and does not enter the inside.

  In the invention according to claim 2, since the support member for supporting the water flow pipe is accommodated in the lower part of the waterproof packing inside the cylindrical member, the water flow pipe is supported by the support member. Even if the hammer phenomenon occurs, the watertight state is maintained, and it is possible to reliably prevent a water leakage accident that occurs when water enters the lower portion of the floor pan.

  In the invention described in claim 3, since the conical surface is formed on the upper surface of the waterproof packing, the water smoothly flows down toward the floor pan without staying at the waterproof packing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a state in which a through metal fitting 10 of the present invention is mounted on a floor pan 2 of a unit bath 1. The floor pan 2 constitutes the bottom surface of the unit bath 1, and a through hole 2a is provided at a position facing the water supply or hot water supply pipe 4 connected to the faucet 3 attached to the unit bath 1 in the vertical direction. A water pipe 5 for supplying water or hot water to the pipe 4 is inserted into the through hole 2a in a state of penetrating in the vertical direction.

  The water pipe 5 is for supplying water or hot water to the faucet 3, and is formed of a polybutene made of synthetic resin that can be bent easily, a polyethylene pipe, or the like. Is connected to the pipe 4 at the top of the floor pan 2.

  The through metal fitting 10 is a cylindrical member 11 fixed to the floor pan 2 from above, a fixing nut 17 for fastening the cylindrical member 11 to the floor pan 2 from below, and a water pipe 5 housed in the cylindrical member 11. And a waterproof packing 21 mounted on the upper portion of the support member 18, and a presser nut 24 for fixing the waterproof packing 21 to the cylindrical member 11.

  The cylindrical member 11 has a substantially cylindrical shape and is fixed to the floor pan 2 from above. A first male screw portion 12 and a second male screw portion 12a are formed on the outer peripheral surfaces of the upper and lower ends, respectively. The flange portion 13 is integrally formed so as to protrude outward in the approximate center, and the accommodating chambers 14 and 14a are formed through the inside in the vertical direction. The accommodating chambers 14 and 14a have an inner diameter through which the water pipe 5 can be inserted vertically, and are composed of an upper accommodating chamber 14 and a lower accommodating chamber 14a. The upper accommodating chamber 14 is larger in diameter than the lower accommodating chamber 14a. , 14a, an annular flange 15 is integrally formed. The cylindrical member 11 has a disk-shaped packing 16 disposed on the periphery of the through-hole 2a of the floor pan 2, and a flange portion 13 is overlaid on the upper portion of the packing 16, and a second male screw is formed from the lower portion of the floor pan 2. The fixing nut 17 is screwed to the portion 12a, so that the floor pan 2 is fixed.

  The support member 18 is substantially semi-cylindrical and is made of, for example, rubber or a resin material, and a pair of support members 18 and 18 having the same shape is stacked and accommodated in the accommodating chambers 14 and 14a of the cylindrical member 11. A vertical hole 19 through which the water pipe 5 is inserted up and down is formed in the central portion. Further, the support member 18 is formed with a flange 20 having an outer diameter that overlaps with the flange portion 13 of the cylindrical member 11 in an annular shape substantially at the center of the outer peripheral surface.

  The waterproof packing 21 is a disc type partly formed with a notch 21a. The waterproof packing 21 is made of an elastic material such as rubber or resin, and has a longitudinal hole 22 having an inner diameter through which the water pipe 5 can be inserted. . The waterproof packing 21 is fixed from the upper part of the floor pan 2 by a presser nut 24 in a state where the water pipe 5 is placed on the upper surface of the support member 18, and is superposed on the support member 18 at the upper part. The upper surface is a flat surface, and is exposed above the upper surface of the presser nut 24.

  In order to fix the through metal fitting 10 to the floor pan 2 of the unit bath 1, a packing 16 is disposed on the periphery of the through hole 2 a of the floor pan 2 from above, and the cylindrical member 11 is placed on the through hole 2 a of the floor pan 2. The fixing nut 17 is screwed onto the second male screw portion 12 a formed on the lower outer peripheral surface of the cylindrical member 11.

  Next, the support member 18 and the waterproof packing 21 are fitted on the outer peripheral surface of the water pipe 5, and the support member 18 and the waterproof packing 21 are accommodated in the accommodating chambers 14 and 14 a of the cylindrical member 11. In this case, the support member 18 is not dropped from the storage chambers 14, 14 a because the flange 20 is supported by the flange 15 of the cylindrical member 11.

  Then, with the upper surface of the waterproof packing 21 exposed above the presser nut 24, the presser nut 24 is screwed to the first male screw portion 12 of the cylindrical member 11, and the support member 18 and the waterproof packing 21 are connected to the cylindrical member. 11 storage chambers 14 and 14a.

  Here, in the through metal fitting 10 of the present invention, the waterproof packing 21 is exposed at the upper part between the water pipe 5 and the presser nut 24. Therefore, when water leaks from the faucet 3 or the connecting portion between the faucet 3 and the pipe 4 above the water pipe 5 or when water adheres to the outer peripheral surface of the water pipe 5, the water flows through the water pipe 5. Even if the water travels down to the inside of the penetrating metal fitting 10, the water accumulates at the upper part of the waterproof packing 21 and becomes dead water, or the gap between the water pipe 5 and the waterproof packing 21 from the upper surface of the waterproof packing 21, Or, it does not enter the inside of the through metal fitting 10 through the gap between the waterproof packing 21 and the holding nut 24 and flows from the waterproof packing 21 toward the outer periphery. Then, the water flows down to the upper surface of the floor pan 2 along the outer peripheral surface of the presser nut 24. Thus, the water transmitted through the water conduit 5 does not enter the inside of the through metal fitting 10, and water leakage to the lower part of the floor pan 2 can be prevented.

FIG. 4 shows a through metal fitting 10a provided with a waterproof packing 21a having a conical surface 23 formed on the upper surface in place of the waterproof packing of the first embodiment. 4 that are the same as those shown in FIG. 2 are marked with the same symbols and descriptions of them will be omitted.
In this embodiment, since the upper surface of the waterproof packing is a conical surface, water can flow more smoothly to the upper surface of the floor pan than in the first embodiment.

It is explanatory drawing of the unit bus | bath with which the penetration metal fitting in 1st Example of this invention was mounted | worn. It is a longitudinal cross-sectional view of the through metal fitting in 1st Example of this invention. It is a disassembled perspective view of the penetration metal fitting in 1st Example of this invention. It is a longitudinal cross-sectional view of the through metal fitting in 2nd Example of this invention.

Explanation of symbols

1: Unit bath 2: Floor pan 2a: Through hole 5: Water pipe 10: Through metal fitting 11: Cylindrical member 17: Fixing nut 18: Support member 21: Waterproof packing 24: Presser nut

Claims (3)

  A through-hole is drilled in the floor pan of the unit bath, and a water or hot water water pipe is started up from below the floor through the through-hole, and a through metal fitting for supporting the water pipe is attached to the through hole. The through metal fitting is a cylindrical member that is fixed to the floor pan, a fixing nut that fastens the cylindrical member to the waterproof pan, a waterproof packing that is housed in the cylindrical member and supports the water pipe, and the waterproof packing is fixed to the cylindrical member. A through metal fitting, wherein the waterproof packing is exposed to the upper part between the water pipe and the holding nut.   The through metal fitting according to claim 1, wherein a support member for supporting the water pipe is accommodated in the lower part of the waterproof packing inside the cylindrical member. The through metal fitting according to claim 1 or 2, wherein a conical surface is formed on an upper surface of the waterproof packing.

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