JP5405869B2 - Piping connection structure and piping connection method for drainage equipment - Google Patents

Description

  The present invention relates to a pipe connection structure and a pipe connection method of a drainage facility for connecting an underfloor drain pipe disposed under a floor of a house and an above-floor drain pipe connected to kitchen equipment, sanitary equipment, and the like.

  Conventionally, the connection between drainage pipes installed under the floor and floor drainage pipes connected to kitchen equipment, sanitary equipment, etc. is done by installing the drainage pipe under the floor and then constructing the floor surface. One worker who dives under the floor later from the inspection port and pushes the floor drain pipe up through the perforated part drilled in the floor, and the worker 1 who connects the floor drain pipe pushed up on the floor to the floor drain pipe People were needed. Under the floor, the field of view is poor and it is difficult to secure a work space. Also, since two workers are mainly required, much labor and labor are required.

  In order to cope with such a problem, the present applicant connects a flexible tube that can be bent to the upstream end portion of the drainage pipe disposed under the floor, and attaches a pulling tube to the upstream end portion of the flexible tube. After connecting, and temporarily fastening the engaged body to the upper end of the pulling pipe with a temporary fixing member, constructing the floor surface, and engaging the engaging tool with the above-mentioned engaged body from the hole drilled in the floor surface, A plumbing method for drainage equipment was proposed in which the temporary fastening member and the engaged body are removed from the pull-up pipe and the pull-up pipe is fixed to the floor surface by a fixture, and the pull-up pipe and the floor drain pipe are connected (Patent Document). 1).

  The above drainage plumbing method connects underfloor drainage pipes, flexible pipes, and pull-up pipes before constructing the floor surface, so it can be easily operated while securing a large space. Since the engaging tool is simply engaged with the temporarily engaged body to be pulled up, the connection work can be easily performed by one person. In addition, even if the hole drilled in the floor and the position of the pull-up pipe are somewhat misaligned, a flexible flexible pipe is interposed between the underfloor drain pipe and the pull-up pipe. It was excellent that the gap was adjusted and the underfloor drain pipe and the above floor drain pipe could be connected.

  Similarly to Patent Document 1, as a structure in which one worker can connect an underfloor drain pipe and an above-floor drain pipe, a pipe that is laid under the floor and bent at least partially, and a through-hole drilled in the floor There has also been proposed a piping structure that includes an equipment pipe laid on the floor and is connected to the equipment pipe on the floor by pulling up the pipe from the upper side of the floor through a through hole to the floor (Patent Document 2).

JP 2007-146602 A JP 2007-218032 A

  However, the drainage facility piping method of Patent Document 1 and the piping structure of Patent Document 2 are pulled up by the positional relationship between the length of the flexible pipe (a pipe that is partially bent) and the hole drilled in the floor surface. The flow gradient of the flexible tube after the tube is pulled up and connected to the drainage pipe on the floor changes, so the flow gradient of the flexible tube is not constant, and the length of the flexible tube and the holes drilled in the floor surface Depending on the positional relationship (for example, when the flexible tube is long), the flexible tube may be bent and have a reverse gradient.

The present invention has been made in view of the above problems, and the problem to be solved is that even if the positions of the holes drilled in the floor and the rising portion connected to the floor drain pipe are slightly shifted. An object of the present invention is to provide a pipe connection structure and a pipe connection method for a drainage facility that can be adjusted and can be constructed by one worker without having a reverse gradient.

In order to achieve the above object, the drainage pipe connection structure according to the present invention has at least a part that can be bent or bent in the horizontal direction at the upstream end of the underfloor drain pipe fixed to the underfloor pipe installation surface. A drainage pipe connection structure in which a movable part and a drainage pipe for position adjustment composed of a rising part connected to a floor drain pipe are connected, and the movable part and the rising part of the drain pipe for position adjustment are pipes It is supported by the support stand which is not fixed to the installation surface.

  In the pipe connection structure of the drainage facility according to the present invention, a movable part that can be bent or bent is formed on the side of the drain pipe below the floor of the drain pipe for position adjustment, and a movable part that can be bent or bent on the side of the drain pipe on the floor. The two movable parts are bent and connected, or the movable part that can be bent or bent is formed on the underfloor drain pipe side of the drain pipe for position adjustment, and curved on the floor drain pipe side. A movable part that can be freely or bent is formed, the two movable parts are bent and connected, and a bendable or bendable movable part formed on the floor drain pipe and the floor drain pipe side is bent and connected. It is preferable. Further, it is preferable that the rising portion is located on a substantially extended line of the underfloor drain pipe, and even if the movable portion of the position adjusting drain pipe is curved or bent, the flow gradient does not change on a horizontal plate. More preferably, the support base is placed. Further, the flexible movable part of the drain pipe for position adjustment is a flexible pipe, the flexible movable part is a straight pipe and a universal joint, and the rising part is an elbow joint, Each is preferably formed as a separate body.

Next, in the drainage pipe connection method of the present invention, the underfloor drain pipe is fixed to the underfloor piping installation surface, and at least part of the upstream end of the fixed underfloor drain pipe is curved in the horizontal direction. A movable part that can be freely or bent is connected to a drain pipe for position adjustment that consists of a rising part connected to the floor drain pipe, and the rising part and the movable part of the drain pipe for position adjustment are fixed to the piping installation surface. By determining the flow gradient by supporting it by a non-supporting base, constructing the floor surface, drilling a hole in the floor surface, and inserting the drainage pipe on the floor from the floor into the hole and connecting it to the rising part. The above-mentioned drainage pipe on the floor and the drainage pipe on the underfloor are connected.

In the pipe connection structure of the drainage facility of the present invention, a drain pipe for position adjustment having a movable part that can be bent or bent in the horizontal direction is connected to an underfloor drain pipe fixed to a pipe installation surface. Therefore, when the movable part of the drain pipe for position adjustment is freely bendable, the rising part connected to the floor drain pipe can be moved in a substantially circumferential direction and a shrinking direction by bending the movable part. When the movable part is bendable, the rising part can be moved in the circumferential direction by bending the movable part, so that the rising part connected to the hole drilled in the floor and the drain pipe on the floor Even if the position is slightly shifted, the position can be adjusted, and the rising portion for connecting to the floor drain pipe can be positioned directly below the hole drilled in the floor surface. As described above, the position adjusting drain pipe is moved in the horizontal direction to adjust the position of the rising portion connected to the floor drain pipe, and at this time, the movable portion and the rising portion of the position adjusting drain pipe are Since the connection work with the floor drain pipe can be performed in a state where the flow gradient is fixed while being supported by a support base that is not fixed to the piping installation surface, the flexible pipe and the The flow gradient does not change depending on the positional relationship of the holes drilled in the floor, and the reverse gradient does not occur. Moreover, since the pipe connection structure of the drainage facility of the present invention can connect the drainage pipe on the floor and the drainage pipe under the floor by one worker from the floor that can secure a wide working space after constructing the floor surface, As described above, one worker who works under the floor after the floor construction is not required, and labor, cost, labor, and danger can be greatly reduced.

In addition, a movable part that can be bent or bent is formed on the bottom drain pipe side of the drain pipe for position adjustment, and a movable part that can be bent or bent is formed on the drain pipe side on the floor, and these two movable parts The pipe connection structure of the drainage equipment that is bent and connected is that the position adjustment drain pipe is bent from the initial state. The position of the rising portion can be adjusted not only in the direction or the substantially circumferential direction and the shrinking direction but also in the extending direction, and the range of adjustment is further expanded.
Here, adjusting in the extension direction means increasing the distance obtained by connecting the upstream end portion of the underfloor drain pipe and the rising portion with a straight line.

  Furthermore, a movable part that can be bent or bent is formed on the under-floor drain pipe side of the drain pipe for position adjustment, and a movable part that can be bent or bent is formed on the floor drain pipe side, and these two movable parts The pipe connection structure of the drainage equipment in which the bendable or bendable movable part formed on the underfloor drain pipe and the underfloor drain pipe side is bent and connected is bent at two locations. Thus, the adjustment width in the extension direction can be further widened.

  In addition, the piping connection structure of the drainage facility in which the rising part is located on the substantially extended line of the underfloor drain pipe can be used as a guide when drilling a hole for inserting the drain pipe on the floor surface. improves.

  Further, even if the movable part of the drain pipe for position adjustment is bent or bent, the pipe connection structure of the drainage equipment in which the support base is placed on a horizontal plate whose flow gradient does not change is as follows. Since there are many irregularities, mounting the support base on such a horizontal plate ensures that the flow gradient once determined is maintained without changing the flow gradient even when the support base is slid. can do.

  The bendable movable part of the drain pipe for position adjustment is a flexible pipe, the bendable movable part is composed of a straight pipe and a universal joint, the rising part is an elbow joint, The pipe connection structure of the drainage facility formed separately can be easily bent at an arbitrary angle by forming a movable portion that can be bent with a flexible tube. Further, by connecting a straight pipe to a universal joint to form a flexible part that can be bent, it can be easily bent at an arbitrary angle. Moreover, the cost of forming the drain pipe for position adjustment can be reduced by making each of them separate.

Next, the drainage pipe connecting method of the present invention connects the hole drilled in the floor and the drainage pipe on the floor by moving the drain pipe for position adjustment in a substantially circumferential direction or a circumferential direction. Even if the position of the rising portion is slightly shifted, it is possible to connect by adjusting the positional shift. At this time, since the position adjustment is performed after the rising portion and the movable portion of the drain pipe for position adjustment are previously supported by a support base that is not fixed to the piping installation surface and the flow gradient is determined, the reverse gradient is obtained. There is no end. For the above work, after the floor surface is constructed, a hole is drilled, and the rising part of the drain pipe for position adjustment is positioned directly below the hole drilled in the floor surface. Since only the pipe is connected, it can be performed by one worker from the floor, and labor, cost, labor, and danger can be greatly reduced.

It is a perspective view which shows the piping connection structure of the drainage equipment which concerns on one Embodiment of this invention. It is a top view of the same piping connection structure. It is a front view of the same piping connection structure. It is a disassembled sectional view of the joint for floor drainage pipe connection used for the piping connection structure. It is a top view which shows the piping connection structure of the drainage equipment which concerns on other embodiment of this invention. It is an exploded sectional view of a universal joint used for the piping connection structure. FIG. 10 is a plan view showing a pipe connection structure for a drainage facility according to still another embodiment of the present invention, omitting a vertical pipe and a joint for connecting a drainage pipe on the floor. FIG. 10 is a plan view showing a pipe connection structure for a drainage facility according to still another embodiment of the present invention, omitting a vertical pipe and a joint for connecting a drainage pipe on the floor. It is a front view of the bendable joint used for the same piping connection structure. FIG. 10 is a plan view showing a pipe connection structure for a drainage facility according to still another embodiment of the present invention, omitting a vertical pipe and a joint for connecting a drainage pipe on the floor.

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

  The drainage pipe connection structure of the present invention shown in FIG. 1 includes an underfloor drain pipe 1 disposed under a floor 10 of a house, and an on-floor drain pipe connected to kitchen equipment, sanitary equipment (not shown), and the like. 3 is connected to the upstream end portion of the underfloor drain pipe 1 to connect the drain pipe 2 for position adjustment. This underfloor drain pipe 1 is a VU pipe made of vinyl chloride resin, and is provided with an appropriate flow gradient (about 1/100 to 3/100) by a fixed support base 8 fixed to a pipe installation surface 9 under the floor. It is fixed and connected to an outdoor drain pipe (not shown). The floor drain pipe 3 is also a VU pipe made of vinyl chloride resin similar to the floor drain pipe 1, and its upstream end is connected to kitchen equipment, sanitary equipment and the like.

As shown in FIGS. 2 and 3, the drainage pipe 2 for position adjustment connected to the underfloor drainage pipe 1 is connected to a movable portion 20 that can be bent in the horizontal direction and an upstream end portion of the movable portion 20. In this embodiment, a flexible tube is used as the movable portion 20 that can be bent. The flexible tube 20 is a plastic corrugated double-layer tube, and its outer peripheral surface is formed in a bellows so as to be easily bent, and its inner peripheral surface is formed in a flat shape so that drainage flows smoothly. As the material plastic, polyolefin such as polyethylene and polypropylene is preferably used.
In addition, if the flexibility of the flexible tube 20 used as the bendable movable portion 20 is large, the position adjustment is easy. However, if the flexibility is too large, the flexible tube 20 may be easily bent and may have a partial reverse gradient. Therefore, it is preferable to be flexible enough to restore the original shape even if it is once curved. Specifically, a flexible pipe that is curved about 5 to 30 degrees to the left and right with the underfloor drain pipe 1 as an axis is preferable. Moreover, even if the length of the flexible tube 20 is too long, there is a possibility that the flexible tube 20 is easily bent due to its own weight and may have a reverse gradient. Therefore, the length is preferably about 200 cm.

As shown in FIGS. 2 and 3, the rising portion 21 that constitutes the drain pipe 2 for position adjustment together with the bendable movable portion 20 (flexible tube) is a 90 ° elbow joint, on the downstream side thereof. Is formed with a downstream connection port 21a for inserting the upstream end of the flexible tube 20, and an upstream connection port 21b for inserting a vertical tube 4 to be described later is formed on the upstream side. The 90 ° elbow joint 21 is connected to the flexible pipe 20 so that the upstream connection port 21b of the 90 ° elbow joint 21 is located on the extension line of the underfloor drain pipe 1 in a plan view. By positioning the 90 ° elbow joint 21 on the extended line of the underfloor drain pipe 1, after constructing the floor surface 10, a guideline for drilling the hole 10a for inserting the above floor drain pipe 3 can be obtained. Ten drilling operations can be easily performed.
In addition, the floor drain pipe 3 may be directly connected to the upstream connection port 21b of the 90 ° elbow joint 21. However, in this case, the distance from the floor surface 10 to the 90 ° elbow joint 21 is increased. Workability is not good. That is, it is difficult to evenly apply the adhesive to the inner peripheral surface of the upstream connection port 21b of the 90 ° elbow joint 21, and apply the adhesive only to the outer peripheral surface of the downstream end of the floor drain pipe 3. Therefore, there remains concern about the bonding strength and water tightness of the bonded part. Therefore, in this embodiment, in order to improve workability, the 90 ° elbow joint 21 and the floor drain pipe 3 are connected via the vertical pipe 4 and the floor drain pipe connection joint 5 described later.

The drainage pipe 2 for position adjustment composed of the flexible pipe 20 and the 90 ° elbow joint 21 as described above is not fixed to the pipe installation surface 9 as shown in FIGS. 1, 2, and 3. An appropriate flow gradient (1/100 to 3/100) is provided and supported by the two supports 6 and 6. The support base 6 includes two semi-annular holding portions 6a and 6a for holding the flexible tube 20 of the drain pipe 2 for position adjustment from above and below, and the flexible tube 20 held by the holding portions 6a and 6a. The support base 6b, 6b to be supported and the support base 6 do not fall down even when subjected to an external force (such as when the flexible tube 20 is bent) and horizontally on the horizontal plate 7 to be described next. It consists of a base portion 6c that slides, and semi-annular holding portions 6a and 6a are inserted into the support rods 6b and 6b, and nuts 6d and 6d are screwed and tightened from above and below, so that the semi-annular holding portion 6a. , 6a are integrated to firmly hold the flexible tube 20. The base portion 6c of the support base 6 needs an area and a weight so that the support base 6 does not fall down even if the flexible tube 20 is slid in the horizontal direction for position adjustment. Is formed to be about 225 to 2500 cm ² .
In the present embodiment, supports the downstream end of the flexible tube 20 of the drainage pipe 2 for adjusting the position in one of the support base 6, the upstream end of the flexible tube 20 on the other of the support base 6 Although the rising portion 21 (90 ° elbow joint) is simultaneously supported by supporting , the downstream connection port 21a of the rising portion 21 (90 ° elbow joint) may be directly supported by the other support base 6 . Further, when the length of the drainage pipe 2 for position adjustment is short, the flow gradient is determined by one support stand 6 and both the movable part and the rising part of the drainage pipe 2 for position adjustment may be supported. Absent.

  The support base 6 having the above configuration is placed on a horizontal plate 7 as shown in FIGS. The horizontal plate 7 is a flat plate for preventing the flow gradient of the drainage pipe 2 for position adjustment from changing even if the flexible pipe 20 of the drainage pipe 2 for position adjustment is curved. The top surface is adjusted to be horizontal. Usually, the piping installation surface 9 is often uneven or not horizontal, so that the position adjustment is possible even when the support base 6 is slid by placing the support bases 6 and 6 on such a horizontal plate 7. The flow gradient of the drainage pipe 2 for use is not changed, and the position can be adjusted while reliably maintaining the flow gradient once determined.

  As shown in FIG. 3, the downstream end is connected to the upstream connection port 21 b of the 90 ° elbow joint 21, and the upstream end is connected to the lower member 5 </ b> B of the floor drain pipe connection joint 5. The vertical pipe 4 is a VU pipe made of vinyl chloride resin like the underfloor drain pipe 1 and the above-floor drain pipe 3, and is formed so that the inner diameter of the upstream connection port 21b of the 90 ° elbow joint is equal to the outer diameter. ing. This vertical pipe 4 is close to the position of the hole 10a in which the floor drain pipe connection joint 5 is drilled in the floor surface 10 when the floor drain pipe connection joint 5 described below is connected to the upstream end thereof. Thus, it is used for height adjustment with the floor surface 10.

  The floor drain pipe connection joint 5 connected to the upstream end of the vertical pipe 4 is composed of an upper member 5A and a lower member 5B as shown in FIG. Is provided with an annular receiving part 50a having a substantially L-shaped cross section for inserting and connecting the drainage pipe 3 on the floor, and a male screw 51a is formed on the outer peripheral surface of the receiving part 50a. Yes. After the floor drain pipe 3 and the upper member 5A are coated with an adhesive on the inner peripheral surface of the lower end of the floor drain pipe 3 and the outer peripheral surface upstream of the receiving portion 50a of the upper member 5A, the floor drain pipe is applied to the receiving portion 50a. Connected by plugging in 3.

  On the other hand, on the inner peripheral surface of the lower member 5B, a female screw 50b corresponding to the male screw 51a formed on the receiving portion 50a of the upper member 5A is formed, and the male screw 51a is screwed onto the female screw 50b. By combining, the upper member 5A and the lower member 5B are integrated. Further, a waterproof packing 51b for improving water tightness is fitted on the inner peripheral surface thereof, and the upper member 5A and the lower member 5B are watertight only by screwing the male screw 51a and the female screw 50b. Since it can be integrated, workability is good.

  The pipe connection structure of the drainage facility of the present invention composed of the members as described above is constructed such that when the floor surface 10 is constructed and the hole 10a through which the floor drain pipe 3 is inserted is drilled, a 90 ° elbow joint is formed from the hole 10a. Even if the upstream side connection port 21b of 21 is displaced and the on-floor drain pipe 3 cannot be connected, the flexible pipe 20 is connected to the under-floor drain pipe 1 in the horizontal direction. The 90 ° elbow joint 21 can be moved substantially in the circumferential direction and in the shrinking direction, and the upstream connection port 21b of the 90 ° elbow joint 21 can be positioned and connected directly below the hole 10a. In addition, since the flexible tube 20 is supported by an appropriate flow gradient provided by the support 6 that is not fixed to the pipe installation surface 9, the flow gradient changes even if the flexible tube 20 is slid in the horizontal direction. And there is no reverse slope. Moreover, since the position adjustment work as described above can be performed by one worker from the floor where a large work space can be ensured, labor, cost, labor, and danger can be greatly reduced as compared with the prior art.

  Next, a pipe connection method for the drainage pipe connection structure will be described.

First, the underfloor drain pipe 1 is fixed to the pipe installation surface 9 before the construction of the floor surface 10 of the house by the fixed support base 8 while giving an appropriate flow gradient (1/100 to 3/100). Then, after laying the horizontal plate 7 on the pipe installation surface 9, the above-described flexible pipe 20 is connected to the upstream end of the fixed underfloor drain pipe 1, and one upstream side of the flexible pipe 20 is connected. And two downstream ones are supported by supporting bases 6 and 6 that are not fixed to the pipe installation surface 9 with an appropriate flow gradient (1/100 to 3/100), and are supported upstream. platform 6 at you so as to be supported together 90 ° elbow fitting 21.
As described above, the downstream connection port 21a of the 90 ° elbow joint 21 may be directly supported by the upstream support base 6 . In addition, although one position on the upstream side and one position on the downstream side of the drain pipe 2 for position adjustment are supported , both the flexible pipe 20 and the 90 ° elbow joint 21 are supported by only one support base 6 on the upstream side. May be supported simultaneously .

  Next, the downstream connection port 21a of the 90 ° elbow joint 21 is connected to the upstream end of the flexible tube 20 supported by the support base 6 as described above. At this time, the upstream connection port 21 b of the 90 ° elbow joint 21 is adjusted so as to be positioned on the extension line of the underfloor drain pipe 1. By being positioned on the extension line of the underfloor drain pipe 1 in this way, as described above, it becomes a guideline when the hole 10a for inserting the above-floor drain pipe 3 is drilled in the floor surface 10, and the drilling work of the floor surface 10 is performed. Is easier to do. The vertical pipe 4 is inserted and connected to the upstream connection port 21b of the 90 ° elbow joint 21, and the lower member 5B of the floor drainage pipe connection joint 5 is connected to the upstream end of the vertical pipe 4. .

When the connection work to the lower member 5B of the joint 5 for connecting a drainage pipe on the floor is completed as described above, the floor surface 10 is then constructed. And the hole 10a which penetrates the floor drain pipe 3 is drilled in the floor surface 10, and the floor drain pipe 3 is connected to the lower member 5B of the joint 5 for floor drain pipe connection. At this time, the upper member 5A of the joint 5 for connecting the drainage pipe on the floor is bonded and connected in advance to the lower end of the drainage pipe 3 on the floor, and the drainage pipe 3 on the floor is rotated clockwise from above the floor to By screwing the male screw 51a of the upper member 5A to the screw 50b, the upper member 5A and the lower member 5B are integrated, and the waterproof packing 51b fitted to the inner peripheral surface of the lower member 5B is used. It is designed to be integrated in a watertight manner. By doing in this way, while being able to prevent the floor drain pipe 3 being connected diagonally, an adhesive agent becomes unnecessary and workability improves.
Although the floor drain pipe 3 may be directly connected to the upstream connection port 21b of the 90 ° elbow joint 21, doing so increases the distance from the floor surface 10 to the 90 ° elbow joint 21. Is not so good. Therefore, it is preferable to connect the 90 ° elbow joint 21 and the floor drain pipe 3 via the vertical pipe 4 and the floor drain pipe connection joint 5 as in this embodiment.

  At this time, when the lower member 5B of the joint 5 for connecting the drainage pipe on the floor is not positioned directly below the hole 10a drilled in the floor surface 10, the lower member 5B is positioned directly below the hole 10a from above the floor. Adjust to As described above, in the pipe connection structure of the drainage facility according to the present invention, since the flexible tube 20 can be bent in the horizontal direction, the lower member 5B connected to the flexible tube 20 is also in the horizontal direction and the contraction direction. It can be adjusted and some misalignment can be easily corrected.

  In the above procedure, the underfloor drain pipe 1 and the above-floor drain pipe 3 are connected via the flexible pipe 20, the 90 ° elbow joint 21, the vertical pipe 4, and the above-floor drain pipe connecting joint 5.

  If the underfloor drain pipe 1 and the above-floor drain pipe 3 are connected by the method as described above, it can be performed by one worker from the floor, so that labor, cost, labor, and danger can be greatly reduced. Moreover, even if the positions of the hole 10a drilled in the floor surface 10 and the lower member 5B are slightly shifted, the positional shift can be easily adjusted by bending the flexible tube 20 in the horizontal direction. Since the flexible tube 20 is supported by the support base 6 that is not fixed to the piping installation surface 9, the flexible tube 20 does not have a reverse gradient.

  FIG. 5 is a plan view showing a pipe connection structure of a drainage facility according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view of a universal joint used in the pipe connection structure.

  The pipe connection structure of the embodiment shown in FIG. 1 to FIG. 4 described above is used for position adjustment including a movable part 20 (flexible pipe) that can be bent and a rising part 21 (90 ° elbow joint). Whereas the drainage pipe 2 is connected, the pipe connection structure of the drainage facility of the present embodiment is provided with a movable part 22 and a rising part 21 that can be bent to the underfloor drainage pipe 1 as shown in FIG. The position adjusting drain pipe 2A is connected.

  As shown in FIG. 5, the flexible movable portion 22 of the drain pipe 2A for position adjustment is composed of a straight pipe 22A and a universal joint 22B. As the straight pipe 22A, the above-described underfloor drain pipe 1 is used. A VU pipe made of vinyl chloride resin similar to the drainage pipe 3 and vertical pipe 4 on the floor is used.

  As shown in FIGS. 5 and 6, the universal joint 22B includes a first rotating portion 23 to which the downstream end portion of the straight pipe 22A is connected, and the first rotating portion 23 therein. The second rotating portion 24 is housed and includes a second rotating portion 24 to which the upstream end of the underfloor drain pipe 1 is connected. Since the first rotating portion 23 has a spherical outer surface, the second rotating portion The inner peripheral surface of 24 can be freely rotated. A waterproof packing 23a for improving water-tightness is fitted inside the first rotating portion 23, and a waterproof packing 23b for improving water-tightness is fitted on the outer peripheral surface. . An oil-containing rubber is preferably used as the waterproof packings 23a and 23b.

  On the other hand, as shown in FIG. 6, the second rotating portion 24 includes a curved cylindrical portion 24 a that houses the first rotating portion 23, a cylindrical body 24 b, and an upstream end of the underfloor drain pipe 1. In this embodiment, the second rotating portion 24 is connected to the upstream end of the underfloor drain pipe 1 fixed by the fixed support base 8. Therefore, the first rotating part 23 freely rotates on the inner peripheral surface of the second rotating part 24.

The universal joint 22B having the above-described configuration can bend the straight pipe 22A until the straight pipe 22A connected to the first turning part 23 comes into contact with the upstream end of the second turning part 24. In this embodiment, it can be bent to about 30 ° to the left and right.
Other structures and pipe connection methods of the pipe connection structure of the drainage facility are as follows. The upstream end of the underfloor drain pipe 1 is connected to the socket port 24c of the second rotating part 24 of the universal joint 22B, and the straight pipe 22A is connected. 1 is the same as the embodiment shown in FIG. 1 to FIG. 4 described above except that the upstream end is connected to the downstream connection port 21a of the 90 ° elbow joint 21. Is omitted.

  The drainage pipe connection structure as described above is also similar to the drainage pipe connection structure of the embodiment shown in FIGS. 1 to 4 described above, and the position of the hole 10a drilled in the floor 10 and the 90 ° elbow joint. Even if the position of the upstream side connection port 21b is displaced, the 90 ° elbow joint 21 is moved in the circumferential direction by bending the movable portion 22 that can be bent in the horizontal direction, and 90 ° just below the hole 10a. The upstream connection port 21b of the elbow joint 21 can be positioned and connected, and the bendable movable part 22 is supported by the support base 6 with an appropriate flow gradient, and thus has a reverse gradient. There is no end to it. In addition, once the bendable movable portion 22 is bent, the state as it is can be maintained, and the connection work becomes easier.

  FIG. 7 is a plan view showing a pipe connection structure of a drainage facility according to still another embodiment of the present invention.

As shown in FIG. 7, the pipe connection structure of the drainage facility of this embodiment is such that a drain pipe 2 </ b> B for position adjustment is connected to the upstream end of the underfloor drain pipe 1 fixed by the fixed support base 8. The drainage pipe 2B for position adjustment has a movable part supported by two support bases 6 and 6 that are not fixed to the pipe installation surface 9 and a support base on one upstream side, as in the first embodiment. 6 are supported along the rising portion, Ru Tei granted proper flow gradient (1 / 100-3 / 100).

The drainage pipe 2B for position adjustment is provided with one flexible pipe 20 which is the same as that of the first embodiment described above on the underfloor drainage pipe 1 side and one on the floor drainage pipe 3 side. The flexible pipes 20 and 20 are bent and connected by an elbow joint 25, and the upstream end of the flexible pipe 20 on the floor drain pipe 3 side is connected to the downstream connection port 21a of the 90 ° elbow joint 21 described above. Is. If the elbow joint 25 has a bending angle of 90 ° or more, the range of adjustment in the extending direction is widened, but the problem of reduced drainage occurs. Therefore, the bending angle of the elbow joint 25 is preferably 90 ° or less. In particular, about 10 ° to 45 ° is preferable.
The position adjusting drain pipe 2B may be connected to the floor drain pipe 3 side by the bendable movable portion 22 composed of the straight pipe 22A and the universal joint 22B described above. Further, the above-described universal joint 22B may be used in place of the elbow joint 25 to connect the flexible tubes 20, 20.
Since the other structure and the pipe connection method of the pipe connection structure of the drainage facility are the same as those of the above-described embodiment, the same reference numerals are assigned to the same members and the description thereof is omitted.

  In the drain connection pipe connection structure as described above, since the drain pipe 2B for position adjustment is bent from the initial state, it is linear (specifically, force is applied in the direction of the arrow in FIG. 7). This increases the distance from the upstream end of the underfloor drain pipe 1 to the 90 ° elbow joint 21. Accordingly, as in the first embodiment described above, since the adjustment can be made not only in the substantially circumferential direction and the shrinking direction but also in the extending direction, the range of adjustment is further expanded.

  FIG. 8 is a plan view showing a pipe connection structure of a drainage facility according to still another embodiment of the present invention, and FIG. 9 is a front view of a bendable joint used in the pipe connection structure.

  As shown in FIG. 8, the pipe connection structure of the drainage facility according to the fourth embodiment replaces the drainage pipe 2 </ b> B for position adjustment used in the third embodiment described above at the upstream end of the underfloor drainage pipe 1. The drainage pipe 2C for position adjustment is connected. The drain pipe 2C for position adjustment has a flexible movable portion 22 composed of a straight pipe 22A and a universal joint 22B similar to the second embodiment described above, one on the underfloor drain pipe 1 side and one on the floor drain pipe 3 side. The two movable parts 22, 22 are bent and connected by a bendable joint 26, and the upstream end of the straight pipe 22A of the bendable movable part 22 on the floor drain pipe 3 side is 90 °. The elbow joint 21 is connected to the downstream connection port 21a.

As shown in FIG. 9, the bendable joint 26 that bends and connects the bendable movable parts 22, 22 includes a first rotating portion 23 similar to that of the second embodiment described above, and its first The cylindrical body 26b is composed of a second rotating part 24A bent at an angle of 15 ° with respect to the central axis of the rotating part 23, and the flexible movable parts 22 and 22 are bent from such an initial state. When the joint 26 is connected, it can be further rotated to the left and right by about 30 °, so that the range of adjustment is further expanded. Moreover, in this embodiment, since the movable part 22 on the underfloor drain pipe 1 side is not fixed, unlike the case of Example 2 described above, the first rotating part 23 and the second rotating part 24A are provided. Both of them rotate to expand the range of position adjustment.
The underfloor drain pipe 1 side may be a bendable movable part 22 and the above-floor drain pipe 3 side may be the bendable movable part 20 described above.
Since the other structure and the pipe connection method of the pipe connection structure of the drainage facility are the same as those in the first to third embodiments, the same members are denoted by the same reference numerals and the description thereof is omitted.

  The pipe connection structure of the drainage equipment as described above can be adjusted not only in the circumferential direction, but in addition to this, the bendable joint 26 that connects the bendable movable parts 22 and 22 is bent, whereby the underfloor drainage pipe 1. Since the upstream end of the cylinder and the 90 ° elbow joint 21 are more linear, the adjustment range is wide.

  FIG. 10 is a plan view showing a pipe connection structure of a drainage facility according to still another embodiment of the present invention.

  The drainage pipe connection structure of the embodiment shown in FIG. 10 is obtained by connecting a drainage pipe 2 </ b> D for position adjustment to the upstream end of the underfloor drainage pipe 1. In this position adjusting drain pipe 2D, the same flexible pipe 20 as in the first embodiment is provided on the underfloor drain pipe 1 side and one on the floor drain pipe 3 side, and the two flexible pipes 20 are provided. Are connected by bending the elbow joint 25 and the flexible pipe 20 provided on the underfloor drain pipe 1 side. is there. The upstream end of the flexible pipe 20 on the floor drain pipe 3 side is connected to the downstream connection port 21 a of the 90 ° elbow joint 21. At this time, in order to improve the workability of the drilling operation of the hole 10a for inserting the floor drain pipe 3 into the floor surface 10, the upstream side connection port 21b of the 90 ° elbow joint 21 is on the extension line of the floor drain pipe 1 Therefore, the lengths of the flexible tubes 20 and 20 are substantially the same, and the underfloor drain pipe 1 and the flexible pipe 20 provided on the underfloor drain pipe 1 side are bent by 22.5 °. In addition to connecting at an angle, the bendable flexible pipe 20 provided on the underfloor drain pipe 1 side and the bendable flexible pipe 20 provided on the floor drain pipe 3 side are connected at a 45 ° bend angle. Yes. When the underfloor drain pipe 1 and the bendable flexible pipe 20 and the bendable flexible pipes 20, 20 are connected in this way, the upstream connection port 21 b of the 90 ° elbow joint 21 is connected to the underfloor drain pipe 1. It can be located on the extension line.

  In addition, in the pipe connection structure of the drainage facility according to the fifth embodiment, the position of the bendable flexible tube 20 can be adjusted using two as described above. Two can be used, and in this case, two bendable universal joints 26 are used. Since the initial bending angle of the bendable joint 26 is 15 °, the bendable movable part 22 provided on the underfloor drain pipe 1 side and the bendable movable part 22 provided on the floor drainage pipe 3 side are By bending and connecting at an angle of 30 °, the 90 ° elbow joint 21 is positioned on the extension line of the underfloor drain pipe 1. (Only when the straight pipes 22A and 22A of the movable parts 22 and 22 have substantially the same length.)

  The pipe connection structure of the drainage equipment having the above-described configuration is that the two parts of the underfloor drainage pipe 1 and the flexible pipe 20 and the flexible pipes 20 and 20 are arranged from the initial stage in which the drain pipe 2D for position adjustment is provided. By bending and connecting, the adjustment width in the extension direction can be further expanded.

  As mentioned above, although various embodiment of the pipe connection structure of the drainage facility has been described in detail, the present invention is not limited to the above-described embodiment. For example, the movable portion 22 that can be bent is provided on the underfloor drain pipe 1 side. Even if the bendable movable part 20 is provided on the floor drain pipe 3 side and bent and connected, the same effect as the above embodiment can be obtained.

1 Underfloor drain pipe 2, 2A, 2B, 2C, 2D Drain pipe for position adjustment 20 Flexible movable part (flexible pipe)
21 Rising part (90 ° elbow joint)
21a Downstream connection port 21b Upstream connection port 22 Flexible movable part 22A Straight pipe 22B Universal joint 23 First rotating part 23a Waterproof packing 23b Waterproof packing 24 Second rotating part 24A Bent second rotating Part 24a curved tube part 24b cylindrical body 24c socket port 25 elbow joint 26 bendable joint 26b cylindrical body 3 floor drain pipe 4 vertical pipe 5 floor drain pipe joint 5A upper member 50a receiving part 51a male screw 5B lower member 50b female Screw 51b Waterproof packing 6 Support base not fixed to piping installation surface 6a Semi-annular holding part 6b Support rod 6c Base part 6d Nut 7 Horizontal plate 8 Fixed support base 9 Piping installation surface 10 Floor surface 10a Hole

Claims (7)

At the upstream end of the underfloor drain pipe fixed to the pipe installation surface under the floor, at least a part that can be bent or bent in the horizontal direction, and a position adjustment unit that consists of a rising portion connected to the above-ground drain pipe A pipe connection structure for drainage equipment connected to a drain pipe,
A drainage pipe connection structure characterized in that the movable part and the rising part of the drain pipe for position adjustment are supported by a support base not fixed to the pipe installation surface.   A bendable or bendable movable part is formed on the lower drainage pipe side of the drainage pipe for position adjustment, and a bendable or bendable movable part is formed on the floor drainage pipe side, and the two movable parts are bent. The pipe connection structure for a drainage facility according to claim 1, wherein the pipe connection structure is connected.   A bendable or bendable movable part is formed on the lower drainage pipe side of the drainage pipe for position adjustment, and a bendable or bendable movable part is formed on the floor drainage pipe side, and the two movable parts are bent. The drainage pipe connection structure according to claim 1, wherein the drainage pipe and the underfloor drain pipe are connected by bending a bendable or bendable movable part formed on the underfloor drain pipe side.   The drain connection pipe connection structure according to claim 1, wherein the rising portion is located on a substantially extended line of the underfloor drain pipe.   5. The support base is placed on a horizontal plate whose flow gradient does not change even when the movable portion of the drain pipe for position adjustment is bent or bent. 6. Piping connection structure of the drainage equipment described in Crab.   The bendable movable part of the drain pipe for position adjustment is a flexible pipe, the bendable movable part is composed of a straight pipe and a universal joint, the rising part is an elbow joint, 6. The drain connection pipe connection structure according to claim 1, wherein the pipe connection structure is formed separately. A floor drainage pipe is fixed to the pipe installation surface under the floor, and at the upstream end of the fixed floor drainage pipe, at least a part that can be bent or bent horizontally is connected to the floor drainage pipe. The flow gradient is determined by connecting the drainage pipe for position adjustment consisting of the rising part to be supported, and supporting the rising part and the movable part of the drainage pipe for position adjustment by a support base that is not fixed to the piping installation surface. In addition, the floor surface is constructed and a hole is drilled in the floor surface, and the floor drain pipe is connected to the rising part by inserting the floor drain pipe into the hole from above the floor. The drainage pipe connection method.

Images