JP2001065695A - Supply and drain pipe-connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure high watertightness by providing a locking means comprising a rugged part at the peripheral surface of the end connection part of a pipe, elastically fitting and locking a large diameter packing material to the locking means, and making the packing material act as a locking part when connecting a supply/drain pipe to a sink or the like. SOLUTION: When connecting the drain pipe 1 made of polyvinyl chloride or polypropylene to a drain port fitting 102 locked to the drain port edge of a vessel body such as sink and a wash basin by a box nut (a connecting member) 103, the locking means 11 comprising a rugged part is provided at the peripheral surface of the end connection part of the drain pipe 1, and the large diameter packing material 2 is elastically fitted and locked to the locking means 11. The packing material 2 is formed by integrally providing a collar-like packing part 2' annularly protruded on the outside of the annular protruding part of the locking means 11. The box nut 103 fitted to the outside of the packing material 2 is thread-fastened to the drain port fitting 102 to press the collar-like packing part 2', which is elastically deformed to obtain excellent water stop performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a water supply / drainage pipe, and more particularly, to a connection structure of a plastic (resin) / copper water / drainage pipe for domestic use, particularly a sink, a basin, and a bathtub. Things.

[0002]

2. Description of the Related Art FIG.
The structure shown in FIG. That is, a locking flange 21 is provided around the connection end of the pipe (drain pipe) 1, a step 31 is left above the locking flange 21, and the packing material 2 ″ is provided on the step 31.
And the drain pipe 1 is connected to a drain port 10 of a container such as a basin.
A tightening nut 105 is screwed into the drainage fitting 102 which is locked to 1 and fastened, and further screwed in through a cap nut 103, whereby the packing 2 ″ is elastically deformed at the lower end edge of the drainage fitting 102 to stop. This connection structure is an example, and the connection structure is shown in FIG.
Also, there is a structure shown in FIG. FIG. 14 shows a type in which halfway pipes 1 and 4 are connected by a nut 105 to each other, and FIG. 15 shows a type in which halfway pipes 1 and 4 are connected to each other by a cylindrical connector 106. Also, for example, a basin,
In some sinks and the like, the drainage pipe 1 is provided with a water blocking part 200 for inserting a release wire 300 for remotely opening and closing a drainage plug while maintaining watertightness.

In the case of a pipe (for example, a drain pipe) 1 that is locked by the locking flange 21, it may be related to the small crushing allowance of the packing material 2 ″ or the other pipe (a drain pipe or a drain port). However, there is a problem that water is leaked when the inclination is slightly inclined with respect to the fittings or the like. 14 and the connection is made in an inclined manner, etc. Also, the intermediate pipes of the water supply and drainage shown in FIG.
In the type connected with 5, water stoppage is not considered,
Further, in the case of FIG. 15, the fitting is performed, so that the maintenance is difficult. In the case of a drain pipe having the water blocking part 200, as shown in FIG.
It is necessary to adopt a post-assembly type water blocking part 200 to be assembled after the 3 is locked to the locking flange 21. As an example of the insertion water stop part 200, a cylindrical bolt 204 inserted from the inside of the drain pipe 1 into the insertion hole 1 ′ opened in the drain pipe 1.
And a washer 205 that is externally inserted into the cylindrical bolt 204 from outside the drain pipe 1, and a nut 2 that is screwed into the cylindrical portion 204 a
06, a flanged gasket 207 set in the through hole 204a 'in the cylindrical portion 204a, and the cylindrical portion 204a
To the flange 2 of the flanged gasket 207
And a fastening nut 208 that presses the locking water through hole 107a, and after the cap nut 103 is locked to the locking flange 21 through the cap nut 103 as described above, it is essential to mount the insertion water blocking portion 200. In this case, the procedure is restricted, and the wiring work of the release wire 300 may be troublesome, and the assembling efficiency becomes poor.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and a technical problem thereof is that a packing material fitted and locked at a connection end of a pipe is a connecting member (cap nut, band). (A member or the like). Another technical problem is to extend a reinforcing means to be attached to a peripheral surface of a pipe on a cap nut. Still another technical problem is to use the reinforcing means as a shock absorber.

[0005]

The technical means taken to solve the above-mentioned object is as follows. Claim 1 engraves a locking means comprising an uneven portion on a peripheral surface of a connection end of a pipe; A large-diameter packing material is elastically fitted and locked to the locking means, and the packing material is used as a locking portion of the connection member when the pipe is connected to the object by a connection member. That is the gist.

[0006] According to the above technical means, the locking portion is formed on the large-diameter packing material by the fitting and locking force with the locking means including the uneven portion.
In detail, a locking force similar to that of the locking flange is provided. Therefore, for example, when the connection member is a cap nut, when connected to another pipe or the like, the large-diameter packing material also serves as a conventional locking flange at the tip of the pipe, and the cap nut is formed over a wide range. It is elastically close and can exhibit high watertightness.

According to a second aspect of the present invention, the object to which the pipe according to the first aspect is connected is a drainage fitting, a connecting pipe vertically extending from a water discharging fitting, a water supply pipe, a hot water supply pipe, a drainage pipe in the middle of a piping route. The gist of the invention is that it is a drainage fitting, a connecting pipe extending from a water discharging fitting, and a water supply pipe or a drainage pipe connected to another pipe.

In the above-mentioned technical means, an object to which a pipe in which the large-diameter packing material is fitted and locked is defined. Sinks, drainage fittings that lock to the drains of washbasins, connecting pipes hanging from water spouts called spouts, water supply, hot water supply pipes, intermediate water supply and hot water supply pipes that are interconnected in the middle of drainage pipes And drainage pipes.

According to a third aspect of the present invention, the connecting member according to the first or second aspect is a band member, and the locking means comprising the concave and convex portions is engraved on the connecting ends of both pipes to be connected. The gist is that the packing material is fitted and locked to the pipe locking means in a straddling manner, and the packing material is used as a locking portion of the band member.

The above-mentioned technical means is a case where the connecting member is not a cap nut but a band member (clip type, screw type, etc.), and the above-mentioned large-diameter packing material is connected to the pipe by the band member. The two pipes are fastened in such a manner that they are fitted and locked in a straddling manner on the locking means engraved at the end, and the packing material is used as a locking portion, and the packing material as the locking portion is pressed. Connecting. As a result, the two pipes are permanently connected in a state of being temporarily connected by the packing material, and maintain a watertight connection state.

A fourth aspect of the present invention specifies that the connecting member according to the first or second aspect is a cap nut, and the large packing material is also used as a locking flange with the cap nut.

In a fifth aspect, the cap nut according to the fourth aspect is
The gist of the present invention is that a skirt portion to be attached to the peripheral surface of the water supply pipe, the hot water supply pipe, and the drainage pipe is integrally formed.

According to this technical means, the skirt portion is
When a stress acts in a direction orthogonal to the connection direction, the stress is received.

According to a sixth aspect of the present invention, there is provided a skirt according to the fifth aspect, wherein the skirt has a structure in which the skirt is thin or cut at equal intervals in the axial direction.

In this technical means, when a stress acts in a direction perpendicular to the connection direction, the skirt portion is elastically deformed and functions as a shock absorber.

According to a seventh aspect of the present invention, the pipe in which the large-diameter packing material according to any one of the first, second, fourth, fifth and sixth aspects is fitted and locked is a drain pipe for a sink or a basin, and The gist of the present invention is that the pipe has a water blocking part for a release wire that opens and closes a drain cock by remote control.

In the case of this technical means, the locking flange can be fitted rearward. That is, the water blocking part is assembled, the cap nut is lowered using the height space to the water stopping part, and the packing material is then fitted back to the locking means consisting of the uneven part in that state. Is possible.

[0018]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of a connection structure of a water supply / drainage pipe of the present invention, FIG. 4 shows a second embodiment of the present invention, FIG. 5 shows a third embodiment of the same, and FIG. Is
FIGS. 7 and 8 show the fifth embodiment, FIGS. 9 and 10 show the sixth embodiment, and FIGS.
1 and FIG. 12 show a seventh embodiment, respectively.
To describe the first embodiment, reference numeral 1 is a drain pipe.

In the present embodiment, the drain pipe 1 is made of vinyl chloride, polypropylene, or the like. A cap nut (connected to a drain port fitting 102 that is engaged with a drain port 101 of a container such as a sink or a basin 100) is connected. Member) 103, and a locking means 1 having a concave and convex portion on the peripheral surface of the connection end.
A packing material 2 having a large diameter is elastically fitted and locked to the locking means 11.

As shown in the drawing, the concave and convex portions of the locking means 11 are formed in a shape having an annular concave portion 11b on both sides with the annular convex portion 11a interposed therebetween. The annular recesses 1 are provided between the annular projections 11a.
1b. In the present embodiment, the height of the annular projection 11a is set to about 1.5 mm.

In the present embodiment, the large-diameter packing material 2 has a thickness of about 3 mm, and as shown in FIG. 2, a flange-shaped packing section 2 having a thickness of about 1.5 mm outside the annular convex portion 11a. 'Has an outer diameter projecting annularly.

Reference numeral 200 denotes a water blocking portion for inserting the release wire 300, which is formed integrally with the drain pipe 1 and has a through hole 201a for the release wire 300, and has a male screw 201b screwed around its outer periphery. 201 and its insertion hole 20
1a, a sleeve-shaped sealing member 202 having a flange portion 202a at an outer end, and a male screw 2 of the screw cylinder portion 201.
01b, and a nut body 203 that resiliently presses the flange 202a of the seal material 202. The nut body 203 is inserted into the screw cylinder part 201 in a state where the release wire 300 is inserted through the inner hole 202b of the seal material 202. Male screw 201b
To press against the flange 202a of the sealing material 202,
The structure in which the release wire 300 is fixed to the drain pipe 1 by the crushing force while maintaining the water stopping property is illustrated.

As shown in FIG. 3, the connection structure of the water supply / drainage pipe according to the first embodiment having the above-described structure, as shown in FIG.
2a, the packing material 2, the slip washer 3, and the cap nut (made of polyacetal resin) 103 are attached to the drain pipe 1 beforehand.
After screwing and tightening a tightening nut 105 of the drainage fitting 102, the nut body 203 and the inner hole 202 of the sealing material 202 are screwed.
b, One end of the release wire 300 inserted in the order of the insertion hole 201a of the screw cylinder portion 201 is passed through the drain pipe 1 and connected to the mechanical box a. Then, the cap nut 103 is lifted up, screwed and connected to the drainage fitting 102, and finally the sealing material 2 is set so that the release wire 300 has an appropriate curvature.
02 and slide it into the screw cylinder 201,
03 is screwed into the screw cylinder 201. Reference numeral a2 denotes a support shaft, and reference numeral a3 denotes a stopper lid supported by the support shaft a2.

As shown in FIG. 1, the flanged packing portion 2 'of the large-diameter packing material 2 is pressed from above by the lower end of the drainage fitting 102 by fastening with the cap nut 103. The packing member 2 ′ that protrudes in the form of a flange is elastically deformed while also serving as a stopper, specifically a locking flange, and the lower end surface of the drainage fitting 102 is originally an inner screw of the cap nut 103. It is also in close contact with the 103a portion and exhibits excellent water stopping properties.

Next, a second embodiment shown in FIGS.
To describe the third embodiment, reference numeral 400 denotes a discharge fitting, 401 denotes a connection pipe thereof, and FIG.
FIG. 5 shows a case where the pipe connected to the connection pipe 401 is a copper water supply pipe or hot water supply pipe 4 when the pipe connected to the connection pipe 401 is a water supply pipe or hot water supply pipe 4 made of vinyl chloride.

FIGS. 4 and 5 show the water supply pipe and the hot water supply pipe 4 respectively.
On the peripheral surface of the connection end of (1), a locking means 11 having the same irregularities as in the first embodiment is engraved, and a large-diameter packing material 2 is formed on the locking means 11 by utilizing its elastic force. In the same manner as in the above embodiment, the packing member 2 is used as a locking portion (specifically, it is also used as a locking flange), and its water supply pipe is formed by a cap nut (connection member) 103. Connecting the hot water supply pipe 4 to the connection pipe 401 is the same.

FIG. 6 shows another embodiment (fourth embodiment) in which the drain pipe 1, the water supply pipe and the hot water supply pipe 4 are connected to each other in the middle of the piping route, and the ends are in surface contact with each other. Both tubes 1 and 4 (FIG. 6 (a)) or both tubes 1 and 4 (FIG. 6 (b)) which are connected at intervals by packing materials 2, 2 whose ends abut in a watertight manner. The above-mentioned locking means 11 composed of an uneven portion is engraved on the peripheral surface of the end portion, and the packing members 2 and 2 having a large diameter are elastically fitted and locked to each of the locking means 11.
The pipes are connected to each other by screwing a second cap nut (connecting member) 103 ″ into the cap nut (connecting member) 103 ′.
As shown in the figure, the packing material 2 is pressed by the two cap nuts 103 ′ and 103 ″ so that the packing member 2, which also serves as a locking portion, ie, a locking flange, is elastically deformed by the packing portion 2 ′ protruding in a flange shape. , Also closely contact the inner thread portion of the first cap nut 103 '.

FIG. 7 shows a fifth embodiment in which the drain pipes 1, the water supply pipes and the hot water supply pipes 4 made of vinyl chloride are connected to each other in a watertight manner. The locking means 11 composed of the above-mentioned concave and convex portions is similarly engraved at the connection end portions of the two pipes 1 and 4, and the large-diameter packing material is stretched over the locking means 11 of the two pipes 1 and 4. 2 and the packing material 2
The band member (connection member) from above with the
(See (a) and (b)) By fastening with B, the packing material 2 is crushed to connect the two pipes 1 and 4 in a watertight manner. FIGS. 9 and 10 show a sixth embodiment, that is, a drain pipe 1 made of vinyl chloride, a water supply pipe and a hot water supply pipe 4 using a hand member B having guard portions b at both edges. An example in which pipes are connected in a watertight manner is shown. This band member B
Crushes the large-diameter packing material 2 fitted and locked over the locking means 11 engraved at the connection end of the pipes 1 and 4, and crushes the packing material 2 at the guard portions b. It has a structure that makes it impossible to move by holding it.

Next, a seventh embodiment shown in FIGS. 11 and 12 will be described. In this embodiment, the skirt portion 104 is suspended from the cap nut (connection member) 103 in the first embodiment. The other structure is the first
Since the third embodiment is the same as the first embodiment, the same reference numerals are given and the description is omitted.

In this embodiment, the skirt 10
4 has a thickness of about 3 mm and a length of about 5 mm, and when a lateral stress occurs in the S pipe or the P pipe (not shown) as shown in FIG. It is dispersed throughout one part to avoid local concentration of stress. In such a configuration, the sink and the basin 100
When the container (bucket, detergent container, etc.) contained in the cabinet holding the door closes the door, the S pipe or P
Even if lateral stress is applied to the pipe, breakage of the drain pipe can be prevented.

The skirt portion 104 is equally useful in the other embodiments described above.

Although not shown in the present embodiment, the skirt 104 is made thin (for example, 1 mm to 1.5 m).
m) or slits are provided at equal intervals and divided into slits. Elastic pieces are formed between the slits, so that when a lateral stress is generated as described above or when a breaking stress is generated by an accident, the skirt portion is formed. 104 may function as a buffer. It is preferable that the thickness of the skirt portion 104 in the case of this cutting is about 2 mm.

[0033]

As described above, the present invention has the following advantages. (Claim 1) A locking means comprising an uneven portion is engraved on a peripheral surface of a connection end portion of a pipe, and a large-diameter packing material is elastically fitted and locked on the locking means, and the fitting means is provided. Since the connection structure of the water supply / drainage pipe uses the packing material as a locking part by being undetachably supported by the packing material with the locking force, for example, the connection member is a cap nut, and the cap nut is used for other purposes. When connected to pipes and drainage fittings, the large-diameter packing material functions as a conventional locking flange, and elastically closely contacts with fastening members such as cap nuts over a wide range to ensure high watertightness. Even if it is exhibited, even if it is connected in an inclined manner or a regular piping path is inclined by an impact, it is possible to prevent water leakage and maintain watertightness. Further, since a pipe having a locking means formed of an uneven portion on the peripheral surface and a large-diameter packing material which is fitted and locked to the locking means are used, the existing pipe (with a locking flange) is used. Can be exchanged as it is, which is convenient. Further, the connecting member is a band member, and the locking means comprising the concave and convex portions is engraved on the connecting end of the two pipes, and the packing material is applied to the locking means of the two pipes. When the packing material is used as a locking portion of the band member by fitting and locking in a straddling manner, the pipes are temporarily connected to each other by the packing material and then fastened by the band member. Connection is made possible and not only the connection work is facilitated, but also the connection can be made in a watertight manner, and the maintenance is easy. In addition, the connecting pipe cap nut is provided with the water supply pipe,
When the skirt portion that is attached to the peripheral surface of the hot water supply pipe, the drain pipe, etc. is integrally formed, the skirt portion has a reinforcing function,
For example, in a direction perpendicular to the connection direction, that is, in the case of a sink, a basin, or the like, when a bucket or the like, which is a storage object, is accommodated in a cabinet holding the sink or the basin, an impact is applied to a pipe (eg, a drain pipe) by mistake. Even if applied, the stress is prevented from dispersing over the entire contact surface portion of the skirt and being partially concentrated, so that damage to the pipe (drain pipe) can be prevented, and improvement in durability can be expected. In addition, in the case of claim 6, even if a force greater than the breaking stress is locally applied by an accident, the shock absorber function can prevent breakage of a pipe (for example, a drain pipe) and the like, It is safe.
In addition, the pipe in which the large-diameter packing material is fitted and locked is a drain pipe of a sink and a basin, and a water blocking part of a release wire for remotely opening and closing a drain plug is provided. If it is provided, the cap nut is lowered to expose the locking means comprising the uneven portion, and in this state, the packing material can be elastically fitted and locked to the locking means. As the water insertion preventing portion of the wire), both a type in which the drainage pipe shown in the embodiment has a screw cylinder part integrally and a type in which the drainage pipe shown in the prior art has a cylindrical bolt separately can be adopted. Problems in the latter case of the assembly type (the procedure is restricted, making the piping work of the release wire cumbersome. The assembly efficiency is poor).
Can also be solved.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a use state of a first embodiment.

FIG. 2 is a partially enlarged sectional view of a main part thereof.

FIG. 3 is an exploded view showing a main part in section.

FIG. 4 is a partially cutaway front view showing a use state of the second embodiment.

FIG. 5 is a partially cutaway front view showing a use state of the third embodiment.

FIG. 6 is a front sectional view showing a use state of the fourth embodiment, in which (a) is a type in which pipes are connected in surface contact with each other,
(B) shows the type in which the tubes are connected at intervals.

FIGS. 7A and 7B are front sectional views showing a use state of the fifth embodiment, wherein FIG. 7A is a front sectional view thereof, and FIG. 7B is a partially enlarged view of FIG.

8A and 8B show examples of a band member, wherein FIG. 8A shows a clip type, and FIG. 8B shows a screw type.

FIG. 9 is a front sectional view of a sixth embodiment, wherein (a) is
The front sectional view, (b) is the elements on larger scale of (a).

FIG. 10 is a perspective view of a band member used in a sixth embodiment.

FIG. 11 is a front view of a seventh embodiment.

FIG. 12 is a partially enlarged sectional view of the front view.

FIG. 13 is a front sectional view of a conventional drain pipe connection structure.

FIG. 14 is a front sectional view of a conventional connection structure for halfway piping.

FIG. 15 is a front sectional view of another conventional connection structure for halfway piping.

[Explanation of symbols]

1: drainage pipe 11: locking means 2: packing material 102: drainage fitting 400: water discharging fitting 40
1: connection pipe 103: cap nut (connection member) 30
0: Release wire 200: Water blocking part
3: Slip washer 100: Sink, washbasin
4: Water supply pipe, hot water supply pipe 2 ': Flange-shaped packing part circumferentially covering the outside of the convex part (annular convex part) B: Band member (connecting member) b: Guide part 103': First cap nut (Connecting member) 103 ": Second cap nut (Connecting member)

Claims (7)

[Claims] An engaging means comprising an uneven portion is engraved on a peripheral surface of a connection end of a pipe, and a large-diameter packing material is elastically fitted and engaged with the engaging means. A connection structure for a water supply / drainage pipe, wherein a material is used as a locking portion when the pipe is connected to an object by a connection member. 2. An object to which the pipe is connected is a drainage fitting, a connecting pipe hanging from a water discharging fitting, a water supply pipe, a hot water supply pipe, a drainage pipe, or the like in a piping route. 1
Connection structure of the plumbing pipe described. 3. The connecting member is a band member, and the locking means comprising the concave and convex portions is engraved on the connecting ends of both pipes to be connected, and the packing material is provided on the locking means of both pipes. The packing material is used as a locking portion of the band member by fitting and locking in a straddling manner.
Or the connection structure of the plumbing pipe of 2 above. 4. The connection of a water supply / drainage pipe according to claim 1, wherein the connection member is a cap nut, and the large packing material also serves as a locking flange with the cap nut. Construction. 5. A connection structure for a water supply / drainage pipe according to claim 4, wherein said cap nut integrally forms a skirt portion in contact with a peripheral surface of a water supply pipe, a hot water supply pipe, and a drainage pipe. 6. A connection structure for a water supply / drainage pipe according to claim 5, wherein said skirt portion has a structure in which said skirt portion is thin-walled or cut at equal intervals in an axial direction. 7. A pipe in which the large-diameter packing material is fitted and locked is a drain pipe of a sink or a basin, and the pipe is provided with a water blocking part of a release wire for remotely opening and closing a drain plug. The connection structure for a water supply / drainage pipe according to any one of claims 1, 2, 4, 5, and 6.