JP2007205098A - Drainage trap - Google Patents
Drainage trap Download PDFInfo
- Publication number
- JP2007205098A JP2007205098A JP2006027418A JP2006027418A JP2007205098A JP 2007205098 A JP2007205098 A JP 2007205098A JP 2006027418 A JP2006027418 A JP 2006027418A JP 2006027418 A JP2006027418 A JP 2006027418A JP 2007205098 A JP2007205098 A JP 2007205098A
- Authority
- JP
- Japan
- Prior art keywords
- trap
- drainage
- pipe
- drain
- peripheral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000088 Lip Anatomy 0.000 claims abstract description 34
- 230000002093 peripheral Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 210000000078 Claw Anatomy 0.000 claims description 4
- 235000019645 odor Nutrition 0.000 description 11
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- 238000004140 cleaning Methods 0.000 description 1
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- 239000000789 fastener Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 125000000383 tetramethylene group Chemical group 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[H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
Images
Abstract
The present invention provides a drainage trap that reliably prevents odor leakage from an assembly portion of a trap body and a drainage pipe, and has excellent resolution.
A drain body is opened in the middle of a side wall of a bottomed cylindrical portion having an upper opening, a trap body having a sealing portion below the draining portion, a trap body is inserted from the upper surface opening, and a lower portion is the sealing portion. In the drain trap composed of a funnel-shaped drain pipe that is removably assembled to the trap body at a position where the trap pipe enters, a step is formed on the upper inner peripheral wall of the trap body, and a step is formed on the outer peripheral wall of the drain pipe. An annular packing having at least one lip that is airtightly closed is provided. The annular packing has slits on the outer peripheral surface, and a U-shaped cross-section with the top and bottom lips, an L-shaped cross-section with the lateral pieces as lips, the inner periphery is hollow, and the upper and lower corners are lips. The cross section may be triangular. Further, the outer peripheral diameter of the lip may be set to be the same as the inner peripheral diameter of the stepped portion.
[Selection] Figure 1
A drain body is opened in the middle of a side wall of a bottomed cylindrical portion having an upper opening, a trap body having a sealing portion below the draining portion, a trap body is inserted from the upper surface opening, and a lower portion is the sealing portion. In the drain trap composed of a funnel-shaped drain pipe that is removably assembled to the trap body at a position where the trap pipe enters, a step is formed on the upper inner peripheral wall of the trap body, and a step is formed on the outer peripheral wall of the drain pipe. An annular packing having at least one lip that is airtightly closed is provided. The annular packing has slits on the outer peripheral surface, and a U-shaped cross-section with the top and bottom lips, an L-shaped cross-section with the lateral pieces as lips, the inner periphery is hollow, and the upper and lower corners are lips. The cross section may be triangular. Further, the outer peripheral diameter of the lip may be set to be the same as the inner peripheral diameter of the stepped portion.
[Selection] Figure 1
Description
The present invention relates to a drainage trap having a double pipe structure in which a drainage pipe is inserted and fixed to a trap body, and relates to a packing structure for preventing odor from leaking from an assembly part of the trap body and the drainage pipe.
A drainage trap having a double-pipe structure in which a drainage pipe is inserted and fixed to the trap body is known from Patent Document 1. That is, the trap body has a bottomed cylindrical shape whose upper surface is opened as a drainage outlet that matches a sink and the like, and a drainage part is provided in the middle of the side wall so that a part below the drainage part is a sealed part. Further, the drain pipe is formed in a funnel shape in which a tapered portion that covers the drain port of the trap body at the upper portion and a pipe portion that enters the sealed portion at the lower portion are connected. The drainage pipe is assembled to the trap body by engaging a flange-like engagement portion appropriately provided on the upper portion thereof with a step portion appropriately provided on the upper inner periphery of the trap body.
According to this double-pipe drainage trap, during normal use, cleaning water flowing through the drainage pipe flows out from the drainage part of the trap body when the sealed part overflows. Also, the upper surface opening (drainage port) of the trap body matches the upper part of the drainage pipe, and the lower part of the drainage pipe is closed by the sealing part, so that the odor generated in the trap body communicates with the drainage pipe. Will not leak to the outside.
In the conventional double pipe structure drain trap described above, there is a problem that odor leaks from the trap body and the drain pipe assembly. In this regard, in Patent Document 1, a step portion is provided in the trap body, a drain pipe (described as “trap cover” in Patent Document 1) is provided with a flange, and a seal portion is provided on this flange. The lower air is configured not to leak to the upper part.
However, in Patent Document 1, the flange of the drainage pipe is merely placed on the step portion of the trap body, and the function of the seal portion only seals the contact surface between the flange and the step portion. In other words, in this structure, odor is likely to leak from the periphery of the flange, especially when the molding accuracy is poor, or when the assembly position of the drain pipe is shifted due to vibration during use, etc., a gap is easily generated between the trap body, It was difficult to completely prevent odor leakage.
In addition, patent document 1 does not explain what the seal portion is specifically. However, since it is well known that an O-ring is used as a sealing material or a packing material, it is also conceivable to apply this O-ring to an assembly portion between a trap body and a drain pipe. However, while the O-ring is excellent in sealing performance, it has very high elasticity, so a considerable force is required for assembly, and on the contrary, the assembled product cannot be easily released. On the other hand, it is preferable that the drainage pipe can be easily removed from the viewpoint of maintainability, such as removing the trap body. Therefore, when an O-ring is applied as a sealing material for a double-pipe drainage trap, there is a problem that the resolution is poor and the maintainability is poor. Further, the O-ring has a problem that when the rotational force in the circumferential direction acts, the O-ring tends to be partially biased due to the kinking.
The present invention has been made in view of the above-described problems, and an object of the present invention is to reliably prevent odor leakage from an assembly portion of a trap body and a drain pipe and to provide a drain trap excellent in resolution. It is.
In order to achieve the above-described object, in the present invention, a drainage part is established in the middle of the side wall of the bottomed cylindrical part opened on the top surface, and a trap body having a sealing part below the drainage part, and the trap body from the top surface opening. In a drainage trap comprising a funnel-shaped drainage pipe inserted and detachably assembled to the trap body at a position where the lower part enters the sealing part, a stepped portion is formed on the inner peripheral wall upper part of the trap body The means for providing an annular packing having at least one lip for closing the stepped portion in an airtight manner on the outer peripheral wall of the drainage pipe was used.
According to the above means, the wash water or the like is stored in the trap body through the drain pipe, and the wash water that overflows the sealed water portion is drained through the drain portion. Moreover, the spilling of odors through the inside of the drain pipe is always prevented by the sealing portion. In the present invention performing such a basic action, the assembly portion of the trap body and the drain pipe is sealed by an annular packing having a lip, and odor leakage from the assembly portion is also prevented.
The annular packing prevents looseness of the drain pipe and maintains close contact with the trap body within a range that does not impede removal, and has a cross section with slits on the outer peripheral surface and lips on the upper and lower sides of the slit. A U-shape is preferable. As another example, it is preferable that the annular packing has an L-shaped cross section in which a lateral piece is a lip. As yet another example, the annular packing preferably has a triangular cross-section with a hollow inner periphery and upper and lower corners as lips.
In the present invention, an annular packing with a lip having higher deformability than an O-ring is adopted as a seal structure for preventing odor leakage. If the lip is elastically adhered to the step portion of the trap body, higher sealing performance can be obtained. In this case, if the lip is too large or the elastic force is too high, it may be difficult to remove the drain pipe.Therefore, there is a means for setting the outer peripheral diameter of the lip to be the same as the inner peripheral diameter of the step portion of the trap body. Use.
Furthermore, as long as the drain pipe assembly means is removable, it may have a structure in which the flange is mounted on the stepped portion of the trap body as in the prior art, but it eliminates rattling and provides a sealing function for the annular packing. In order not to be damaged, it is preferable that the drain pipe is fixed by providing a guide groove on the outer periphery of the upper part of the drain pipe and providing a claw that can be rotationally engaged with the guide groove on the inner periphery of the trap body.
As described above, according to the present invention, since the annular packing with a lip having better deformability than the O-ring is provided in the assembly part of the trap body and the drain pipe, odor leakage from the assembly part is surely prevented. In addition, the drainage pipe has high resolution and can be a drainage trap with excellent maintainability.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an entire drain trap according to an embodiment of the present invention, in which 10 is a trap body, 20 is a drain pipe, and 30 is an annular packing.
In the case of this embodiment, the trap body 10 is provided with a drainage portion 11 in the middle of the side wall, and a bottomed cylindrical tank body 13 having a sealing portion 12 below the drainage portion 11 and a drainage port body 14 that can be assembled to a sink or the like. And a lock nut 15 screwed into the drain port body 14, and the tank body 13 and the drain port body 14 are integrated by a fastener body 16 via the lock nut 15.
The drain pipe 20 is formed by connecting a funnel portion 21 that can be assembled to the drain port 14 of the trap body 10 and a pipe portion 22 that enters the sealed portion 12 formed in the tank body 13 of the trap body 10. .
In the above configuration, the assembly structure of the trap body 10 and the drain pipe 20 will be described in detail. First, the funnel portion 21 of the drain pipe 20 can be inserted into the drain port body 14 which is the upper structure of the trap body 10 with almost no gap. The diameter is set. A guide groove 23 is formed on the outer periphery of the funnel portion 21 in the drain pipe 20 as shown in FIG. On the other hand, a claw 17 is provided on the inner periphery of the drain port body 14 with respect to the guide groove 23, and the claw 17 is engaged with the guide groove 23 while rotating the drain pipe 20. 20 can be fixed to the trap body 10. In the drain pipe 20, 24 is a blade that functions as a hook for fingers and tools when rotating.
In this embodiment, the annular packing 30 is formed with a stepped portion 18 in the upper stage of the drain outlet body 14 of the trap body 10, while at the position matching the stepped portion 18 of the drainage pipe 20 after assembly. A recessed portion 25 is formed, and an annular packing 30 is provided in the recessed portion 25. The annular packing 30 in this embodiment is made of, for example, an elastic material such as silicon rubber or butylene rubber. As shown in FIG. 3, the annular packing 30 is provided with slits 31 on the outer periphery and lips 32 and 33 formed on the upper and lower sides thereof. It is.
The annular packing 30 is fitted in close contact with the recessed portion 25 of the drainage pipe 20, and the vertical surface and the stepped portion 18 of the trap body 10 are attached to the trap body 10 by assembling the drainage pipe 20 to the trap body 10. Odor leakage from the assembly portion is prevented by tightly contacting the horizontal surface, that is, all corner portions of the step portion 18 in an airtight manner. Further, in this embodiment, the lip shape of the annular packing 30 is made different between the upper and lower sides in accordance with the stepped portion 18 of the trap body 10 being formed in a tapered shape. That is, the upper lip 32 is constituted by only a vertical surface so as to be in close contact with the outer peripheral wall of the trap body 10, while the lower lip 33 has a shape in which the tip is flipped upward so that the taper of the stepped portion 18 is achieved. It is designed to be in close contact with the corner portion. In this embodiment, when the drainage pipe 20 is assembled, the bulged portion is stepped by expanding the corner portion of the lower lip 33 so as to be slightly larger than the corner portion of the stepped portion 18. The lower lip 33 is elastically brought into close contact with the entire vertical surface and inclined surface of the tapered step portion 18 set at 90 degrees or more by being pressed by the corner portion of the portion 18. However, the degree of adhesion is not as high as that of the O-ring, and does not hinder the assembly or removal of the drain pipe 20 at all.
The lip shape of the annular packing 30 is not limited to that of the above-described embodiment, and can be changed according to the shape of the assembly portion (stepped portion) of the trap body 10. FIG. 4 illustrates another lip shape, in which FIG. 4A is an L-shaped cross section that constitutes only the lower lip 33 of the above embodiment, and FIG. 4B and FIG. 31 is provided with a lip having the same shape and the same angle at the top and bottom, and the same figure (d) shows a triangular section having a hollow inner periphery and lips at the upper and lower corners. ing.
Further, the annular packing 30 is set to have the same outer peripheral diameter as the inner peripheral diameter of the stepped portion 18 in the trap body 10, so that the airtightness of the drain pipe 20 can be maintained while maintaining a certain airtightness regardless of elastic deformation. Assembly and removal can be facilitated. What is necessary for the annular packing 30 in the present invention is to provide a lip that can be hermetically contacted over the entire circumference of the stepped portion 18 provided in the trap body 10.
10 Trap body 20 Drain pipe 30 Ring packing
Claims (6)
- A drainage part was established in the middle of the side wall of the bottomed cylindrical part opened at the upper surface, a trap body having a sealing part below the drainage part, and inserted into the trap body from the upper surface opening, and the lower part entered the sealing part. A drainage trap comprising a funnel-shaped drainage pipe that is detachably assembled to the trap body at a position, wherein a stepped portion is formed on an upper portion of the inner peripheral wall of the trap body, and the stepped portion is formed on the outer peripheral wall of the drainage pipe. A drainage trap, characterized in that an annular packing having at least one lip that closes airtightly is provided.
- The drainage trap according to claim 1, wherein the annular packing has a U-shaped cross section in which slits are provided on an outer peripheral surface, and upper and lower sides of the slits are lips.
- The drainage trap according to claim 1, wherein the annular packing has an L-shaped cross section with a lateral piece as a lip.
- The drain trap according to claim 1, wherein the annular packing has a triangular cross-section with a hollow inner periphery and lips at upper and lower corners.
- The drain trap according to any one of claims 1 to 4, wherein the outer peripheral diameter of the lip is the same as the inner peripheral diameter of the step portion of the trap body.
- The drain trap according to any one of claims 1 to 5, wherein a guide groove is provided on an upper outer periphery of the drain pipe, and a claw capable of being rotationally engaged with the guide groove is provided on an inner periphery of the trap body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006027418A JP2007205098A (en) | 2006-02-03 | 2006-02-03 | Drainage trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006027418A JP2007205098A (en) | 2006-02-03 | 2006-02-03 | Drainage trap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2007205098A true JP2007205098A (en) | 2007-08-16 |
Family
ID=38484792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006027418A Pending JP2007205098A (en) | 2006-02-03 | 2006-02-03 | Drainage trap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2007205098A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101054170B1 (en) | 2009-12-24 | 2011-08-04 | 박일선 | Drainage trap and drain trap with sink |
| JP2011158049A (en) * | 2010-02-02 | 2011-08-18 | Piolax Inc | Clamp |
| JP2011241592A (en) * | 2010-05-18 | 2011-12-01 | Toto Ltd | Drain trap |
| JP2012001907A (en) * | 2010-06-14 | 2012-01-05 | Shinko:Kk | Drainage equipment |
| JP2012087461A (en) * | 2010-10-15 | 2012-05-10 | Sun Wave Ind Co Ltd | Drainage equipment |
| WO2012117725A1 (en) * | 2011-03-03 | 2012-09-07 | パナソニック株式会社 | Gas-liquid separator and fuel cell system |
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| JP2002242254A (en) * | 2001-02-20 | 2002-08-28 | Techno Tec:Kk | Drain trap |
| JP2002302979A (en) * | 2001-04-09 | 2002-10-18 | Maruichi Kk | Drain trap |
| JP2003130226A (en) * | 2001-10-30 | 2003-05-08 | C I Kasei Co Ltd | Packing material for pipe |
| JP2003313914A (en) * | 2002-04-24 | 2003-11-06 | Maruichi Kk | Drain trap |
| JP2003328418A (en) * | 2002-05-10 | 2003-11-19 | Maruichi Kk | Drainage piping |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101054170B1 (en) | 2009-12-24 | 2011-08-04 | 박일선 | Drainage trap and drain trap with sink |
| JP2011158049A (en) * | 2010-02-02 | 2011-08-18 | Piolax Inc | Clamp |
| JP2011241592A (en) * | 2010-05-18 | 2011-12-01 | Toto Ltd | Drain trap |
| JP2012001907A (en) * | 2010-06-14 | 2012-01-05 | Shinko:Kk | Drainage equipment |
| JP2012087461A (en) * | 2010-10-15 | 2012-05-10 | Sun Wave Ind Co Ltd | Drainage equipment |
| WO2012117725A1 (en) * | 2011-03-03 | 2012-09-07 | パナソニック株式会社 | Gas-liquid separator and fuel cell system |
| JP5604584B2 (en) * | 2011-03-03 | 2014-10-08 | パナソニック株式会社 | Gas-liquid separator |
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