JP7132833B2 - Pipe fittings, pipe fitting sets, methods of connecting pipe fittings, and usage of lids - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pipe fitting, a pipe fitting set , a method of connecting pipe fittings, and a method of using a lid. More specifically, the present invention relates to a pipe joint for connecting a standpipe and a connecting pipe arranged above the standpipe, a pipe joint set including the pipe joint , a pipe joint connection method, and a lid usage method.

For example, Patent Document 1 discloses an underground structure lid for installing a temporary toilet for connecting a vertical pipe, for example, an outdoor manhole, to the temporary toilet when a disaster such as an earthquake occurs. there is This underground structure lid includes a secondary lid and a parent lid formed with a fitting hole into which the secondary lid is fitted. The parent lid is provided with a cylindrical portion extending downward from the edge of the fitting hole. A pipe joint, such as a tubular adapter connected to a temporary toilet, is fitted into the tubular portion.

When installing the temporary toilet, the parent lid from which the secondary lid has been removed is installed on the vertical pipe, and the pipe joint is fitted into the cylindrical portion so that the pipe joint protrudes upward from the parent lid. After that, a temporary toilet is connected to the upper part of the pipe joint. As a result, the vertical pipe and the temporary toilet can be connected by the pipe joint, and the sewage discharged from the temporary toilet can be flowed into the vertical pipe via the pipe joint.

Japanese Patent No. 3285325

In the following description, the portion of the temporary toilet that is connected to the pipe joint is called the connecting pipe. By the way, the diameter of the connection pipe of the temporary toilet connected to the pipe joint disclosed in Patent Document 1 is a predetermined size. That is, the pipe joint is configured to connect only connecting pipes having a predetermined diameter. However, the diameter differs depending on the type of connecting pipe. When connecting connecting pipes with different diameters to a standpipe, a dedicated pipe joint must be produced for each connecting pipe with a different diameter, which is costly.

The present invention has been made in view of this point, and its object is to reduce the cost when connecting any of a plurality of connecting pipes with different diameters to a standpipe. To provide a fitting set , a method of connecting pipe fittings and a method of using a lid.

A pipe joint according to the present invention includes a cover body fitted to a cover frame provided at the upper end of a standpipe and having a fitting hole penetrating vertically, and a cover body extending downward from the cover body. A pipe joint that connects the parent cover tubular portion of the parent cover having a parent cover tubular portion and a connection pipe disposed above the parent cover tubular portion. The pipe joint includes a first tubular portion, a second tubular portion, and a first connecting portion. The first tubular portion has a predetermined first diameter and is fittable in the parent lid tubular portion. The second tubular portion has a second diameter smaller than the first diameter, and is arranged inside the first tubular portion in plan view. A said 1st connection part connects a said 1st cylindrical part and a said 2nd cylindrical part.

For example, when the connecting pipe has at least one of a first connecting pipe and a second connecting pipe having a diameter smaller than that of the first connecting pipe, the pipe joint can, for example, have a parent lid The tubular portion is fitted with the first tubular portion of the pipe joint, and the parent lid is fitted with the cover frame. By fitting the second connecting pipe to the second cylindrical portion of the pipe joint in such a state, the vertical pipe and the second connecting pipe can be connected by the pipe joint. Further, by fitting the first connecting pipe to the first tubular portion of the pipe joint, the vertical pipe and the first connecting pipe can be connected by the pipe joint. When connecting the standpipe and the first connection pipe, for example, at least the second tubular portion is separated from the pipe joint. In this case, the parent lid fitted with the pipe joint from which the second cylindrical portion has been cut off is fitted to the lid frame. After that, by fitting the first connecting pipe to the first tubular portion of the pipe joint, the vertical pipe and the first connecting pipe can be connected by the pipe joint. Therefore, a single pipe joint can connect a connection pipe and a standing pipe having different diameters. Therefore, since it is not necessary to prepare a dedicated pipe joint for each connecting pipe having a different diameter, the cost can be reduced.

According to a preferred aspect of the present invention, the pipe joint includes a first flange protruding radially outward of the first tubular portion from an outer peripheral surface of the first tubular portion.

According to the above aspect, for example, the lower end of the parent lid tubular portion contacts the first flange. At this time, the position of the first tubular portion with respect to the sleeve tubular portion when the lower end of the sleeve tubular portion comes into contact with the first flange of the pipe joint is such that the pipe joint is reliably fitted to the sleeve tubular portion. It is the position where Therefore, when fitting the pipe joint to the cover tubular portion, the pipe joint is pushed into the cover tubular portion until the lower end of the cover tubular portion contacts the first flange of the pipe joint. It can be reliably fitted to the parent lid cylindrical portion.

According to another preferred aspect of the present invention, the lower end of the first tubular portion is located above the lower end of the second tubular portion. The first connecting portion includes a first inner lateral plate portion protruding radially outward of the second cylindrical portion from a lower end of the second cylindrical portion, and upward from the first inner lateral plate portion. and an elongated first longitudinal plate portion.

For example, when the lower end of the first tubular portion and the lower end of the second tubular portion are vertically positioned at the same position, and the first connection portion is configured by a member having a flat surface, the first tubular portion When cutting the pipe joint in order to connect the connecting pipe to the pipe, a cutting tool is used to cut out at least part of the first connecting portion from below, which makes the cutting work difficult. However, according to the above aspect, when cutting the pipe joint to connect the connection pipe to the first tubular portion, the vertically extending first vertical plate portion is separated from the first tubular portion. At this time, the first vertical plate portion, the first inner horizontal plate portion, and the second cylindrical portion can be separated from the first cylindrical portion by cutting the pipe joint from the side using, for example, a cutting tool. Therefore, it is easier to separate the second tubular portion from the pipe joint as compared with the cutting operation.

According to another preferred aspect of the present invention, the first vertical plate portion is arranged radially inward of the first tubular portion relative to the inner peripheral surface of the first tubular portion. The first connecting portion has a first outer lateral plate portion that connects the first tubular portion and the first vertical plate portion.

According to the above aspect, for example, when connecting the first connection pipe to the first tubular portion of the pipe joint, the first connection pipe is fitted into the first tubular portion. At this time, the position of the first connecting pipe when the lower end of the first connecting pipe contacts the first outer lateral plate portion is the position where the first connecting pipe is securely fitted to the first cylindrical portion. . Therefore, when fitting the first connecting pipe into the first cylindrical portion, the first connecting pipe is pushed into the first cylindrical portion until the lower end of the first connecting pipe contacts the first outer lateral plate portion. 1 connection pipe can be reliably fitted in the 1st cylindrical part.

According to another preferred aspect of the present invention, the vertical position of the upper end of the first tubular portion is different from the vertical position of the upper end of the second tubular portion.

According to the above aspect, since the position of the upper end is different between the first tubular portion and the second tubular portion, the operator can visually check the position of the upper end to distinguish between the first tubular portion and the second tubular portion. is easy to identify.

According to another preferable aspect of the present invention, at least the first connecting portion is made of resin.

According to the above aspect, when cutting the pipe joint for connecting the standpipe and the first connecting pipe, it is easy to cut using a knife.

A pipe joint set according to the present invention includes any pipe joint described above, a parent lid, and a child lid. The cover has a cover main body in which a fitting hole that penetrates vertically is formed and a cover tubular portion that extends downward from the cover main body. The secondary lid fits into the fitting hole.

According to the pipe joint set, it is possible to provide a pipe joint set that includes the above-described pipe joint, parent lid, and secondary lid.

A lid according to the present invention is a lid that fits into a lid frame provided at the upper end of a standpipe and connects the standpipe and a connection pipe arranged above the standpipe. The lid includes a parent lid that can be fitted into the lid frame, and a secondary lid that fits into the parent lid. The parent lid includes a parent lid body, a first tubular portion, a second tubular portion, and a first connecting portion. The lid main body is formed with a fitting hole penetrating vertically and fitted to the lid frame. The first tubular portion extends downward from the main cover body so as to surround the fitting hole in plan view, and has a predetermined first diameter. The second tubular portion has a second diameter smaller than the first diameter, and is arranged inside the first tubular portion in plan view. A said 2nd connection part connects a said 1st cylindrical part and a said 2nd cylindrical part.

For example, when the connecting pipe has at least one of a first connecting pipe and a second connecting pipe having a diameter smaller than that of the first connecting pipe, the lid can be, for example, a parent lid. Fit the parent lid main body to the lid frame. By fitting the second connecting pipe to the second cylindrical portion of the parent lid in this state, the standpipe and the second connecting pipe can be connected by the lid. Further, by fitting the first connecting pipe to the first cylindrical portion of the parent lid, the standpipe and the first connecting pipe can be connected by the lid. When connecting the standpipe and the first connecting pipe, for example, at least the second tubular portion is separated from the parent lid. In this case, the lid main body of the lid from which the second tubular portion has been cut off is fitted to the lid frame. After that, by fitting the first connecting pipe to the first tubular portion, the standpipe and the first connecting pipe can be connected by the lid. Therefore, by fitting the lid to the lid frame, the connecting pipe having a different diameter can be connected to the standpipe. Therefore, since it is not necessary to prepare a dedicated pipe joint for each connecting pipe having a different diameter, the cost can be reduced.

A method of connecting a pipe joint according to the present invention is a method of connecting the parent-lid tubular portion and the connecting pipe by any of the pipe joints described above. The connecting pipe has a first connecting pipe connected to the first tubular portion. The method for connecting the pipe joint includes a disconnecting step and a fitting step. In the separating step, at least a portion of the first connecting portion and the second tubular portion are separated from the first tubular portion fitted to the parent lid tubular portion. In the fitting step, after the separating step, the first connecting pipe is inserted into the fitting hole of the main cover body from above, and the first connecting pipe is fitted into the first cylindrical portion. .

According to the pipe joint connection method, when connecting the standing pipe and the first connecting pipe with the pipe joint, at least part of the first connecting portion and the second tubular portion are separated from the first tubular portion. . Then, in the pipe joint after these separations, the first connecting pipe is fitted to the first cylindrical portion. Thus, the standpipe and the first connection pipe can be connected by the pipe joint. Further, in the pipe joint in which the standpipe and the first connecting pipe are connected, the second tubular portion is separated. Therefore, the water flowing through the first connection pipe is allowed to flow into the standpipe without being blocked by the second tubular portion.

A method of using a lid according to the present invention is a method of connecting a standpipe and a connection pipe arranged above the standpipe using the lid described above. The connecting pipe has a first connecting pipe connected to the first tubular portion. A method of using the lid includes a separating step and a fitting step. In the separating step, at least a portion of the first connecting portion and the second tubular portion are separated from the first tubular portion. In the fitting step, after the separating step, the lid body of the lid is fitted to the cover frame provided at the upper end of the standpipe, and the first connection pipe is connected to the lid body. It is inserted into the fitting hole from above, and the first connecting pipe is fitted to the first tubular portion.

According to the method of using the lid, when connecting the standpipe and the first connecting pipe with the lid, at least a portion of the first connecting portion and the second tubular portion are separated from the first tubular portion. Then, the parent lid of the separated lid is fitted to the lid frame, and the first connecting pipe is fitted to the first cylindrical portion. With this, the standpipe and the first connecting pipe can be connected by the lid. Moreover, the second tubular portion is separated from the lid in a state where the standpipe and the first connecting pipe are connected. Therefore, the water flowing through the first connection pipe is allowed to flow into the standpipe without being blocked by the second tubular portion.

ADVANTAGE OF THE INVENTION According to this invention, since one pipe joint can be used when connecting a connection pipe and a standing pipe with a different diameter, cost can be reduced.

FIG. 4 is a plan view of the lid of the pipe joint set according to the first embodiment; FIG. 2 is a front cross-sectional view of the lid and the pipe joint along the II-II cross section of FIG. 1; FIG. 3 is a view equivalent to FIG. 2 showing a state in which a first connection pipe is connected to a pipe joint; FIG. 3 is a view equivalent to FIG. 2 showing a state in which a second connecting pipe is connected to a pipe joint; FIG. 3 is a view equivalent to FIG. 2 showing a state in which a third connection pipe is connected to a pipe joint; It is a top view of a pipe joint. It is a front view of a pipe joint. FIG. 7 is a front cross-sectional view of the pipe joint along the VII-VII cross section of FIG. 6; FIG. 8 is a front cross-sectional view of a pipe joint according to a modified example of the first embodiment, and is a view equivalent to FIG. 8 ; It is front sectional drawing of the lid|cover which concerns on 2nd Embodiment, and is FIG. 2 equivalent view.

An embodiment of a pipe joint set and a lid according to the present invention will be described below with reference to the drawings.

<First embodiment>
The first embodiment is an embodiment of a pipe joint set according to the present invention. FIG. 1 is a plan view of the lid 20 of the pipe joint set 10 according to this embodiment. FIG. 2 is a front cross-sectional view of the lid 20 and the pipe joint 40 along the II-II cross section of FIG.

As shown in FIG. 2, the pipe joint set 10 includes a lid 20 and a pipe joint 40. As shown in FIG.

The lid 20 is provided on the pipeline 1 buried in the ground. The pipeline 1 has, for example, a vertical pipe 2 and a lid frame 3 . The standpipe 2 is buried in the ground and extends vertically. The stand pipe 2 is, for example, a manhole or a stand pipe of a trout. Although illustration is omitted, another pipeline connecting the standpipe 2 and the main sewage pipe is connected to the lower end of the standpipe 2 . This other pipeline may be composed of a plurality of pipes, ports, joints, or the like, or may be composed of a single pipe.

The lid frame 3 is provided at the upper end of the standpipe 2 and is fitted to the standpipe 2 . The lid frame 3 has a tubular frame portion 3a fitted into the standpipe 2, and a lid fitting portion 3b extending upward from the tubular frame portion 3a and into which the lid 20 is detachably fitted.

Next, the lid 20 will be explained. The lid 20 is detachably fitted to the lid frame 3 . The lid 20 includes a parent lid 21 and a child lid 22. - 特許庁

The parent lid 21 has a parent lid main body 31 and a parent lid tubular portion 32 . The lid main body 31 is a part that fits into the lid frame 3 (specifically, the lid fitting portion 3b of the lid frame 3). A fitting hole 33 penetrating vertically is formed in the parent lid main body 31 . Although the shape of the fitting hole 33 is not particularly limited, it is circular, for example, as shown in FIG. In this embodiment, the fitting hole 33 is formed in the central portion of the main lid body 31 in plan view, but the position where the fitting hole 33 is formed is not particularly limited. As shown in FIG. 2, the main lid body 31 is provided with an annular sealing member 34 that contacts the lid frame 3 when the lid 21 is fitted to the lid frame 3 . Although the type of the sealing member 34 is not particularly limited, it is rubber, for example. The sealing member 34 improves the sealing performance when the parent lid 21 is fitted to the lid frame 3 .

The cover tubular portion 32 extends downward from the cover main body 31 . The cover tubular portion 32 is provided on the cover main body 31 so as to surround the fitting hole 33 in bottom view. In this embodiment, the sleeve tubular portion 32 extends downward from the edge of the fitting hole 33 in the sleeve main body 31 . One or a plurality of slits may be formed in the parent lid tubular portion 32 . Further, in the present embodiment, the main lid body 31 and the tubular lid portion 32 are integrally molded, but they may be separate bodies.

The secondary lid 22 fits into the fitting hole 33 formed in the proximal lid main body 31 of the proximal lid 21 . As shown in FIG. 1, the secondary lid 22 has a shape corresponding to the fitting hole 33, and is disk-shaped here. As shown in FIG. 2, the child lid 22 is provided with an annular seal member 35 that contacts the parent lid body 31 when the child lid 22 is fitted to the parent lid 21 . The sealing member 35 is made of rubber, for example, but the type of the sealing member 35 is not particularly limited. The sealing member 35 improves sealing performance when the child lid 22 is fitted to the parent lid 21 .

Next, the pipe joint 40 will be described. 3, 4, and 5 are views corresponding to FIG. 2, respectively, and show a state in which the first connecting pipe 5a, the second connecting pipe 5b, and the third connecting pipe 5c are connected to the pipe joint 40. FIG. . The pipe joint 40 is a joint that connects the pipeline 1 and the connection pipe 5 arranged above the pipeline 1 . In the present embodiment, the connecting pipe 5 includes a first connecting pipe 5a (see FIG. 3), a second connecting pipe 5b (see FIG. 4), and a third connecting pipe 5c (see FIG. 5) having different diameters. have at least one Here, the diameter D11 (see FIG. 3) of the first connecting pipe 5a is larger than the diameter D12 (see FIG. 4) of the second connecting pipe 5b and larger than the diameter D13 (see FIG. 5) of the third connecting pipe 5c. big. The diameter D12 of the second connecting pipe 5b is larger than the diameter D13 of the third connecting pipe 5c. Although not shown, the first to third connection pipes 5a to 5c are pipes through which sewage flows, and are connected to sewage sources such as toilets and kitchen sinks, or to one of the sewage sources. Department. In addition, the said sewage generation source may be provided temporarily. For example, the sources of sewage generation include disaster toilets used in times of disaster, drainage facilities such as toilets, kitchens and baths in temporary housing, facilities for taking in rainwater, drain pipes of water heaters, and the like. In this embodiment, the pipe joint 40 is a joint capable of connecting any one of the three connection pipes 5a, 5b, and 5c having different diameters to the pipe line 1. As shown in FIG. Here, as shown in FIGS. 3 and 4, when the connection pipes 5a and 5b are connected to the pipe joint 40, the pipe joint 40 is used in a state in which a part thereof is cut off. This will be discussed later.

6 and 7 are a plan view and a front view of the pipe joint 40, respectively. 8 is a front cross-sectional view of the pipe joint 40 taken along line VII-VII in FIG. 6. FIG. As shown in FIG. 8, the pipe joint 40 includes a first cylindrical portion 41, a second cylindrical portion 42, a third cylindrical portion 43, a first flange 45, a second flange 46, a first A connecting portion 47 and a second connecting portion 48 are provided.

As shown in FIG. 3, the first cylindrical portion 41 is a portion that fits into the parent lid tubular portion 32 of the parent lid 21 and can be fitted into the first connection pipe 5a. In this embodiment, the first tubular portion 41 is a spigot for the parent lid tubular portion 32, and the parent lid tubular portion 32 is a socket. However, the first tubular portion 41 may be a socket for the parent lid tubular portion 32, and the parent lid tubular portion 32 may be a spigot. Further, in the present embodiment, the first tubular portion 41 is a socket for the first connection pipe 5a, and the first connection pipe 5a is a spigot.

As shown in FIG. 6, the second tubular portion 42 is arranged inside the first tubular portion 41 in plan view. As shown in FIG. 4, the second tubular portion 42 is a portion that can be fitted to the second connecting pipe 5b. In this embodiment, the second tubular portion 42 is the socket, and the second connecting pipe 5b is the spigot. However, the second tubular portion 42 may be the spigot and the second connecting pipe 5b may be the socket.

As shown in FIG. 6, the third tubular portion 43 is arranged inside the second tubular portion 42 in plan view. As shown in FIG. 5, the third tubular portion 43 is a portion that can be fitted to the third connecting pipe 5c. In this embodiment, the third tubular portion 43 is the socket, and the third connection pipe 5c is the spigot. However, the third tubular portion 43 may be the spigot and the third connecting pipe 5c may be the socket.

The first to third cylindrical portions 41 to 43 have shapes corresponding to the first to third connection pipes 5a to 5c, respectively. In this embodiment, as shown in FIG. 6, the first to third tubular portions 41 to 43 are each cylindrical. Note that slits may be formed in the first to third cylindrical portions 41 to 43. FIG. In a plan view, the centers of the first to third cylindrical portions 41 to 43 are the same, which is the center C1. Here, "coincidence" includes not only the case where the respective centers of the first to third tubular portions 41 to 43 are perfectly aligned, but also the case where these centers are slightly deviated. However, in plan view, the centers of the first to third tubular portions 41 to 43 may be partially or wholly deviated.

As shown in FIG. 8, the diameter of the first cylindrical portion 41 is the first diameter D1. The diameter of the second tubular portion 42 is the second diameter D2, and the diameter of the third tubular portion 43 is the third diameter D3. Here, "diameter" means the inner diameter of the first to third cylindrical portions 41 to 43. As shown in FIG. The first diameter D1 is greater than the second diameter D2 and greater than the third diameter D3. The second diameter D2 is greater than the third diameter D3.

In this embodiment, the lengths in the longitudinal direction (vertical direction here) of the first to third cylindrical portions 41 to 43 are the same. However, the lengths in the longitudinal direction of the first to third cylindrical portions 41 to 43 may be different from each other, and one part may be different from the other part. The upper end of the first tubular portion 41 is located above the upper end of the second tubular portion 42 and above the upper end of the third tubular portion 43. there is Further, the position of the lower end of the first tubular portion 41 is located above the position of the lower end of the second tubular portion 42 and above the position of the lower end of the third tubular portion 43 . is doing. The position of the upper end of the second tubular portion 42 is located above the position of the upper end of the third tubular portion 43 , and the position of the lower end of the second tubular portion 42 is located above the position of the third tubular portion 43 . It is located above the position of the lower end. However, the vertical positional relationship between the first to third tubular portions 41 to 43 is not particularly limited. For example, the top and bottom positions of the respective upper ends of the first to third cylindrical portions 41 to 43 may be the same, and the top and bottom positions of the respective lower ends thereof may be the same.

As shown in FIG. 2, the first flange 45 is such that when the first tubular portion 41 of the pipe joint 40 is fitted into the tubular sleeve portion 32 of the sleeve 21, the lower end of the sleeve tubular portion 32 is It is a part that can be touched. The first flange 45 protrudes radially outward of the first tubular portion 41 from the outer peripheral surface of the first tubular portion 41 . In this embodiment, the first flange 45 is provided at the lower end of the first tubular portion 41 . However, the position of the first flange 45 with respect to the first tubular portion 41 is not particularly limited, and for example, the first flange 45 may be provided in the intermediate portion of the first tubular portion 41 . The first flange 45 is annular. A slit may be formed in the first flange 45 .

As shown in FIG. 5, the second flange 46 is a portion that can come into contact with the lower end of the third connecting pipe 5c when the third tubular portion 43 of the pipe joint 40 and the third connecting pipe 5c are fitted together. be. The second flange 46 protrudes radially inward of the third tubular portion 43 from the inner peripheral surface of the third tubular portion 43 . In this embodiment, the second flange 46 is provided at the lower end of the third tubular portion 43 . However, the position of the second flange 46 with respect to the third tubular portion 43 is not particularly limited, and the second flange 46 may be provided in the intermediate portion of the third tubular portion 43, for example. The second flange 46 is provided at a position lower than the first flange 45, but may be provided at the same position vertically as the first flange 45, or may be provided at a position higher than the first flange 45. may be The second flange 46 may be annular and slit.

The first connecting portion 47 connects the first tubular portion 41 and the second tubular portion 42 . In this embodiment, the first connecting portion 47 is connected to the lower end of the first tubular portion 41 and the lower end of the second tubular portion 42 . However, the position of the first connecting portion 47 with respect to the first cylindrical portion 41 and the second cylindrical portion 42 is not particularly limited. Also, the configuration of the first connecting portion 47 is not particularly limited.

In this embodiment, as shown in FIG. 8, the first connecting portion 47 has a first inner horizontal plate portion 47a, a first vertical plate portion 47b, and a first outer horizontal plate portion 47c. The first inner lateral plate portion 47 a is a surface that protrudes radially outward from the second tubular portion 42 from the lower end of the second tubular portion 42 . In the present embodiment, the first inner lateral plate portion 47 a extends radially outward of the second tubular portion 42 from the lower end of the second tubular portion 42 . The first vertical plate portion 47b extends upward from the first inner horizontal plate portion 47a. The first vertical plate portion 47 b is arranged radially inside the first tubular portion 41 with respect to the inner peripheral surface of the first tubular portion 41 . The vertical length of the first vertical plate portion 47b is shorter than the vertical length of the first cylindrical portion 41 (in other words, the length in the longitudinal direction). However, the vertical length of the first vertical plate portion 47b may be the same as the vertical length of the first cylindrical portion 41, or may be longer than the vertical length of the first cylindrical portion 41. .

The first outer lateral plate portion 47c is a surface that connects the inner peripheral surface of the first cylindrical portion 41 and the first vertical plate portion 47b. The first outer lateral plate portion 47c extends from the lower end of the first cylindrical portion 41 toward the upper end of the first vertical plate portion 47b. The first outer lateral plate portion 47c is arranged above the first inner lateral plate portion 47a. The vertical position of the first outer lateral plate portion 47 c is the same as the vertical position of the first flange 45 . However, the first outer lateral plate portion 47 c may be arranged at a position higher than the first flange 45 or may be arranged at a position lower than the first flange 45 . As shown in FIG. 3, when the first connecting pipe 5a is fitted to the first tubular portion 41, the lower end of the first connecting pipe 5a comes into contact with the first outer lateral plate portion 47c.

As shown in FIG. 8 , the second connecting portion 48 connects the second tubular portion 42 and the third tubular portion 43 . Here, the second connecting portion 48 is connected to the lower end of the second tubular portion 42 and the lower end of the third tubular portion 43 . However, the position of the second connection portion 48 with respect to the second tubular portion 42 and the third tubular portion 43 is not particularly limited. As shown in FIG. 7 , the second connection portion 48 is arranged at a position lower than the first connection portion 47 .

In this embodiment, as shown in FIG. 8, the second connecting portion 48 has a second inner horizontal plate portion 48a, a second vertical plate portion 48b, and a second outer horizontal plate portion 48c. The second inner lateral plate portion 48 a is a surface projecting radially outward of the third tubular portion 43 from the outer peripheral surface of the third tubular portion 43 . In the present embodiment, the second inner lateral plate portion 48 a extends radially outward of the third tubular portion 43 from the lower end of the third tubular portion 43 . The vertical position of the second inner lateral plate portion 48 a is the same as the vertical position of the second flange 46 . However, the second inner lateral plate portion 48 a may be arranged at a position higher than the second flange 46 or may be arranged at a position lower than the second flange 46 .

The second vertical plate portion 48b extends upward from the second inner horizontal plate portion 48a. The second vertical plate portion 48 b is arranged radially inside the second tubular portion 42 relative to the inner peripheral surface of the second tubular portion 42 . The vertical length of the second vertical plate portion 48b is the same as the vertical length of the first vertical plate portion 47b. However, the vertical length of the second vertical plate portion 48b may be longer than the vertical length of the first vertical plate portion 47b, or may be shorter than the vertical length of the first vertical plate portion 47b. In addition, the vertical length of the second vertical plate portion 48b is shorter than the vertical length of the second cylindrical portion 42 (in other words, the length in the longitudinal direction). However, the vertical length of the second vertical plate portion 48b may be the same as the vertical length of the second tubular portion 42, or may be longer than the vertical length of the second tubular portion 42. .

The second outer lateral plate portion 48c is a surface that connects the inner peripheral surface of the second cylindrical portion 42 and the second vertical plate portion 48b. The second outer lateral plate portion 48c extends from the lower end of the second tubular portion 42 toward the upper end of the second vertical plate portion 48b. The second outer lateral plate portion 48c is arranged above the second inner lateral plate portion 48a. The second outer lateral plate portion 48 c is arranged at a position lower than the first flange 45 and higher than the second flange 46 . The vertical position of the second outer lateral plate portion 48c is the same as the vertical position of the first inner lateral plate portion 47a. However, the second outer lateral plate portion 48c may be arranged at a position higher than the first inner lateral plate portion 47a, or may be arranged at a position lower than the first inner lateral plate portion 47a. As shown in FIG. 4, when the second connecting pipe 5b is fitted to the second tubular portion 42, the lower end of the second connecting pipe 5b comes into contact with the second outer lateral plate portion 48c.

As shown in FIG. 6, the first tubular portion 41, the second tubular portion 42, the third tubular portion 43, the first flange 45, the second flange 46, the first connection portion 47 and the second connection portion 48 Each shape is an annular shape in plan view. In this embodiment, the pipe joint 40, namely the first tubular portion 41, the second tubular portion 42, the third tubular portion 43, the first flange 45, the second flange 46, the first connection portion 47 and the second connection The portion 48 is integrally molded. However, part or all of the first tubular portion 41, the second tubular portion 42, the third tubular portion 43, the first flange 45, the second flange 46, the first connecting portion 47 and the second connecting portion 48 , may be molded separately and attached to each other. Further, in the present embodiment, the first tubular portion 41, the second tubular portion 42, the third tubular portion 43, the first flange 45, the second flange 46, the first connection portion 47 and the second connection portion 48 are , is made of resin. However, part or all of the first tubular portion 41, the second tubular portion 42, the third tubular portion 43, the first flange 45, the second flange 46, the first connecting portion 47 and the second connecting portion 48 , may be formed of a material other than resin.

The pipe joint set 10 according to the present embodiment has been described above. Next, a procedure for using the pipe joint set 10 will be described. As shown in FIG. 2, the pipe joint set 10 according to the present embodiment has the cover 21 fitted to the cover frame 3 and the pipe joint 40 fitted to the cover tubular portion 32 of the cover 21. used in the state. As described above, the pipe joint 40 can be connected to any one of the first to third connecting pipes 5a to 5c having different diameters.

First, the procedure for connecting the pipe line 1 and the third connection pipe 5c with the pipe joint 40 will be described. Here, as shown in FIG. 5, the first tubular portion 41 of the pipe joint 40 is fitted into the parent lid tubular portion 32 . The parent lid tubular portion 32 and the first tubular portion 41 are fixed to each other by, for example, an adhesive. At this time, the lower end of the parent lid tubular portion 32 contacts the first flange 45 of the pipe joint 40 . After the pipe joint 40 is attached to the main lid 21 in this manner, the main lid 21 is fitted to the cover frame 3 provided at the upper end of the standpipe 2 . As a result, the pipe joint 40 is placed in the standpipe 2 , and the pipe joint 40 is connected to the standpipe 2 via the main cover 21 and the cover frame 3 . At this time, the child lid 22 is not fitted into the fitting hole 33 of the parent lid 21 . Next, the third connection pipe 5 c arranged above the pipe line 1 is inserted into the fitting hole 33 of the parent lid 21 and fitted into the third tubular portion 43 . As described above, the pipe line 1 and the third connecting pipe 5 c can be connected by the pipe joint 40 .

Next, a procedure for connecting the pipe line 1 and the second connecting pipe 5b with the pipe joint 40 will be described. As shown in FIG. 4, when connecting the second connecting pipe 5b, the pipe joint 40 is used in a processed state. Here, the operator separates the second vertical plate portion 48b and the second outer lateral plate portion 48c of the second connection portion 48, as shown in FIG. In FIG. 8, the pipe joint 40 is divided into two at position A. In FIG. In this embodiment, since the second connecting portion 48 is made of resin, the operator cuts the second vertical plate portion 48b and the second outer horizontal plate portion 48c using a knife or the like. As a result, from the pipe joint 40, the third tubular portion 43, the second flange 46, the second inner horizontal plate portion 48a and the second vertical plate portion 48b of the second connection portion 48 (hereinafter referred to as the third tubular portion 43, etc.) ) is disconnected. Here, a portion 40a of the pipe joint 40 from which the third cylindrical portion 43 and the like are removed (that is, a portion 40a of the pipe joint 40 on the side of the first cylindrical portion 41 and the second cylindrical portion 42) (FIG. 4) ) are used. The part 40a of the pipe joint 40 is hereinafter referred to as a partial pipe joint 40a.

In the partial pipe joint 40a cut as described above, the first tubular portion 41 is fitted into the parent lid tubular portion 32 as shown in FIG. In this case, the separation may be performed after the first tubular portion 41 is fitted into the parent lid tubular portion 32 . After that, the parent lid 21 to which the partial pipe joint 40 a is attached is fitted to the lid frame 3 . As a result, the partial pipe joint 40 a is connected to the standpipe 2 via the main lid 21 and the lid frame 3 . Next, the second connection pipe 5b arranged above the pipe line 1 is inserted into the fitting hole 33 of the parent lid 21 and fitted into the second cylindrical portion 42. As shown in FIG. At this time, the second outer lateral plate portion 48c of the second connection portion 48 is brought into contact with the lower end of the second connection pipe 5b. As described above, the pipe line 1 and the second connecting pipe 5b can be connected by the partial pipe joint 40a. In this embodiment, since the third cylindrical portion 43 and the like are separated from the partial pipe joint 40a, when the second connection pipe 5b is connected to the partial pipe joint 40a, the inside of the second connection pipe 5b is , and the third cylindrical portion 43 are not arranged. Therefore, the sewage in the second connection pipe 5b flows into the pipeline 1 without being blocked by the third cylindrical portion 43 or the like.

Next, a procedure for connecting the pipeline 1 and the first connection pipe 5a by the pipe joint 40 will be described. As shown in FIG. 3, when connecting the first connecting pipe 5a, the pipe joint 40 is used in a processed state in the same manner as when connecting the second connecting pipe 5b. Here, the operator separates the first vertical plate portion 47b and the first outer horizontal plate portion 47c of the first connecting portion 47 by dividing the pipe joint 40 into two at position B in FIG. As a result, from the pipe joint 40, the second tubular portion 42, the third tubular portion 43, the second flange 46, the first inner horizontal plate portion 47a and the first vertical plate portion 47b of the first connection portion 47, and , the second connecting portion 48 (hereinafter referred to as the second cylindrical portion, etc.) is disconnected. Here, a portion 40b of the pipe joint 40 from which the second tubular portion 42 and the like are removed (that is, the portion 40b of the pipe joint 40 on the first tubular portion 41 side) (see FIG. 3) is used. The part 40b of the pipe joint 40 is hereinafter referred to as a partial pipe joint 40b.

In the partial pipe joint 40b cut as described above, as shown in FIG. As a result, the partial pipe joint 40b is connected to the standpipe 2 via the main lid 21 and the lid frame 3. As shown in FIG. Even in this case, the separation may be performed after the first tubular portion 41 is fitted into the parent lid tubular portion 32 . Next, the first connection pipe 5 a arranged above the pipe line 1 is inserted into the fitting hole 33 of the parent lid 21 and fitted into the first cylindrical portion 41 . At this time, the lower end of the first connection pipe 5a comes into contact with the first outer lateral plate portion 47c of the first connection portion 47. As shown in FIG. As described above, the pipe line 1 and the first connecting pipe 5a can be connected by the partial pipe joint 40b. In this embodiment, since the second cylindrical portion 42 and the like are separated from the partial pipe joint 40b, when the first connection pipe 5a is connected to the partial pipe joint 40b, the inside of the first connection pipe 5a is , the second tubular portion 42 and the like are not arranged. Therefore, the sewage in the first connection pipe 5a flows into the pipeline 1 without being blocked by the second tubular portion 42 or the like.

As described above, in this embodiment, as shown in FIGS. 3 to 5, the pipe joint 40 includes the cover tubular portion 32 and the connection pipe 5 arranged above the cover tubular portion 32. connect. As shown in FIG. 8, the pipe joint 40 includes a first tubular portion 41, a second tubular portion 42, a third tubular portion 43, a first connection portion 47, and a second connection portion 48. I have. The first tubular portion 41 has a predetermined first diameter D1, and as shown in FIG. 1 connecting pipe 5a can be fitted. As shown in FIG. 8, the second tubular portion 42 has a second diameter D2 smaller than the first diameter D1, and is arranged inside the first tubular portion 41 in plan view. 2, it can be fitted to the second connecting pipe 5b inserted into the parent lid cylindrical portion 32. As shown in FIG. As shown in FIG. 8, the third tubular portion 43 has a third diameter D3 smaller than the second diameter D2, and is arranged inside the second tubular portion 42 in plan view. 3, it can be fitted to the third connection pipe 5c inserted into the parent lid tubular portion 32. As shown in FIG. The first connecting portion 47 connects the first tubular portion 41 and the second tubular portion 42 . The second connecting portion 48 connects the second tubular portion 42 and the third tubular portion 43 .

As a result, as shown in FIG. 5, when connecting the standpipe 2 and the third connecting pipe 5c, first, the first tubular portion 41 is fitted to the parent lid tubular portion 32, and , the parent lid 21 is fitted to the lid frame 3 . By fitting the third connecting pipe 5c into the third cylindrical portion 43 in this state, the pipe joint 40 can connect the standpipe 2 and the third connecting pipe 5c. As shown in FIG. 4, when connecting the standpipe 2 and the second connection pipe 5b, at least the third tubular portion 43 is cut off from the pipe joint 40, for example. Then, the parent lid 21 fitted with the pipe joint 40 (partial pipe joint 40 a in this embodiment) with the third tubular portion 43 cut off is fitted to the lid frame 3 . After that, by fitting the second connecting pipe 5b into the second cylindrical portion 42 of the partial pipe joint 40a, the standpipe 2 and the second connecting pipe 5b can be connected.

Moreover, as shown in FIG. 3, when connecting the standpipe 2 and the first connection pipe 5a, at least the second tubular portion 42 and the third tubular portion 43 are separated from the pipe joint 40, for example. Then, the parent lid 21 fitted with the pipe joint 40 (the partial pipe joint 40b in this embodiment) from which the second tubular portion 42 and the third tubular portion 43 are separated is fitted to the lid frame 3 . After that, by fitting the first connecting pipe 5a into the first cylindrical portion 41, the standpipe 2 and the first connecting pipe 5a can be connected. Therefore, one pipe joint 40 can connect the connection pipes 5a, 5b, and 5c having different diameters and the standpipe 2. FIG. Therefore, since it is not necessary to prepare a dedicated pipe joint for each of the connection pipes 5a, 5b, 5c having different diameters, the cost (in particular, the cost of manufacturing the dedicated pipe joint) can be reduced.

In this embodiment, as shown in FIG. 8 , the first flange 45 protrudes radially outward of the first tubular portion 41 from the outer peripheral surface of the first tubular portion 41 . As shown in FIG. 2, the position of the first tubular portion 41 with respect to the sleeve tubular portion 32 when the lower end of the sleeve tubular portion 32 contacts the first flange 45 of the pipe fitting 40 is This is the position where the parent lid cylindrical portion 32 is securely fitted. Therefore, when fitting the pipe joint 40 to the parent-lid tubular portion 32, the pipe joint 40 is pushed into the parent-lid tubular portion 32 until the lower end of the parent-lid tubular portion 32 contacts the first flange 45. The pipe joint 40 can be reliably fitted to the parent lid tubular portion 32 .

In the present embodiment, the second flange 46 protrudes radially inward of the third tubular portion 43 from the inner peripheral surface of the third tubular portion 43 . As shown in FIG. 5 , when connecting the third connection pipe 5 c to the pipe joint 40 , the third connection pipe 5 c is fitted into the third tubular portion 43 . At this time, the position of the third connecting pipe 5c when the lower end of the third connecting pipe 5c contacts the second flange 46 is the position where the third connecting pipe 5c is securely fitted to the third tubular portion 43. is. Therefore, when fitting the third connection pipe 5c into the third tubular portion 43, the third connection pipe 5c should be pushed into the third tubular portion 43 until the lower end of the third connection pipe 5c contacts the second flange 46. , the third connection pipe 5c can be reliably fitted to the third tubular portion 43. As shown in FIG.

For example, when the lower end of the first cylindrical portion 41 and the lower end of the second cylindrical portion 42 are positioned at the same top and bottom, and the first connection portion 47 is a flat surface, the standpipe 2 and the first connection pipe 5a are connected. Therefore, when cutting the pipe joint 40, a cutting tool is used to cut out at least a portion of the first connecting portion 47 from below, which makes it difficult to cut out. However, in this embodiment, as shown in FIG. 8, the lower end of the first tubular portion 41 is located above the lower end of the second tubular portion 42 . The first connecting portion 47 includes a first inner lateral plate portion 47a that protrudes radially outward from the second cylindrical portion 42 from the lower end of the second cylindrical portion 42, and a first inner lateral plate portion 47a that protrudes upward from the first inner lateral plate portion 47a. and a first vertical plate portion 47b that extends through the first cylindrical portion 41 and is indirectly connected to the first tubular portion 41 via a first outer lateral plate portion 47c. As a result, when the pipe joint 40 is cut to connect the standpipe 2 and the first connection pipe 5a, the vertically extending first vertical plate portion 47b is separated from the first cylindrical portion 41. As shown in FIG. At this time, by cutting the pipe joint 40 from the side using, for example, a knife, the second tubular portion 42 and the like can be separated from the first tubular portion 41 . Therefore, it is easier to separate the second cylindrical portion 42 and the like from the pipe joint 40 as compared with the cutting work described above.

In the present embodiment, the first vertical plate portion 47 b is arranged radially inside the first tubular portion 41 with respect to the inner peripheral surface of the first tubular portion 41 . The first connection portion 47 has a first outer lateral plate portion 47c that connects the inner peripheral surface of the first cylindrical portion 41 and the first vertical plate portion 47b. As shown in FIG. 3 , when connecting the first connection pipe 5 a to the pipe joint 40 , the first connection pipe 5 a is fitted into the first tubular portion 41 . At this time, the position of the first connection pipe 5a when the lower end of the first connection pipe 5a contacts the first outer lateral plate portion 47c is such that the first connection pipe 5a is securely fitted to the first cylindrical portion 41. position. Therefore, as shown in FIG. 3, when fitting the first connecting pipe 5a into the first cylindrical portion 41, the first connecting pipe 5a is until the lower end of the first connecting pipe 5a contacts the first outer lateral plate portion 47c. is pushed into the first tubular portion 41, the first connection pipe 5a can be reliably fitted to the first tubular portion 41. As shown in FIG.

In this embodiment, as shown in FIG. 8, the second connecting portion 48 has a second inner horizontal plate portion 48a, a second vertical plate portion 48b, and a second outer horizontal plate portion 48c. there is The second inner horizontal plate portion 48a, the second vertical plate portion 48b, and the second outer horizontal plate portion 48c are substantially the same as the first inner horizontal plate portion 47a, the first vertical plate portion 47b, and the first outer horizontal plate portion 47c, respectively. , the same effect as that of the first connection portion 47 can be obtained in the second connection portion 48 .

In the present embodiment, the upper and lower positions of the upper end of the first tubular portion 41, the upper and lower positions of the upper end of the second tubular portion 42, and the upper and lower positions of the upper end of the third tubular portion 43 are different from each other. The operator can easily identify the first tubular portion 41, the second tubular portion 42, or the third tubular portion 43 by visually checking the position of the upper end.

In this embodiment, the first tubular portion 41, the second tubular portion 42, the third tubular portion 43, the first flange 45, the second flange 46, the first connection portion 47, and the second connection portion 48 are made of resin. is made. This makes it easy to cut the pipe joint 40 using a cutting tool.

In addition, in this embodiment, for example, a method of connecting the parent lid tubular portion 32 and the first connection pipe 5a by means of the pipe joint 40 can be realized. The method includes a disconnecting step and a mating step. In the separating step, at least part of the first connecting portion 47 and the second tubular portion 42 are separated from the first tubular portion 41 fitted to the parent lid tubular portion 32 . As shown in FIG. 3, in the fitting process, after the separating process, the first connecting pipe 5a is inserted into the fitting hole 33 of the main lid body 31 from above, and the first connecting pipe 5a is connected to the first cylindrical portion. 41. By sequentially performing such steps, the standpipe 2 and the first connection pipe 5a can be connected by the pipe joint 40 .

<Modified Example of First Embodiment>
The pipe joint set 10 according to the present embodiment has been described above. Next, the pipe joint 140 included in the pipe joint set according to the modified example of the first embodiment will be described. FIG. 9 is a front cross-sectional view of a pipe joint 140 according to a modification of the first embodiment, and is a view equivalent to FIG. As shown in FIG. 9, the pipe joint 140 includes a first cylindrical portion 141, a second cylindrical portion 142, a third cylindrical portion 143, a first flange 45, a second flange 46, a first A connecting portion 147 and a second connecting portion 148 are provided.

The shapes and lateral positional relationships of the first to third tubular portions 141 to 143 are the same as the shapes and lateral positional relationships of the first to third tubular portions 41 to 43 of the above embodiment. In this modified example, the upper and lower positions of the first to third tubular portions 141 to 143 are the same. The top and bottom positions of the upper ends of the first to third tubular portions 141 to 143 are the same, and the top and bottom positions of the bottom ends of the first to third tubular portions 141 to 143 are the same.

The shape and position of the first flange 45 and the second flange 46 are the same as in the above embodiment. The first connecting portion 147 connects the lower end of the first tubular portion 141 and the lower end of the second tubular portion 142 . The second connecting portion 148 connects the lower end of the second tubular portion 142 and the lower end of the third tubular portion 143 . Here, the first connection portion 147 and the second connection portion 148 are flat surfaces, and unlike the above embodiment, no step is formed.

In this modified example, when connecting the third connection pipe 5c (see FIG. 5) to the pipe joint 140, the pipe joint 140 is used without being cut, as in the above embodiment. When connecting the second connection pipe 5b (see FIG. 4) to the pipe joint 140, for example, the second connection portion 148 is divided at the position C, and the third tubular portion 143, the second flange 46 and the second connection portion The second connecting pipe 5b is fitted to the second tubular portion 142 of the pipe joint 140 from which at least a part of the pipe 148 has been cut off.

When connecting the first connection pipe 5a (see FIG. 3) to the pipe joint 140, the first connection portion 147 is divided at the position D, for example, and the second cylindrical portion 142, the third cylindrical portion 143, the second The first connecting pipe 5a is fitted to the first tubular portion 141 of the pipe joint 140 from which the flange 46, at least part of the first connecting portion 147, and the second connecting portion 148 have been cut off. The procedure for connecting any one of the first to third connection pipes 5a to 5c to the pipe line 1 by means of the pipe joint 140 is the same as in the above-described embodiment, and thus description thereof will be omitted here.

Even in this modified example, the connection pipes 5a, 5b, and 5c having different diameters and the standpipe 2 can be connected with one pipe joint 140, as in the above-described embodiment. Therefore, it is not necessary to prepare a dedicated pipe joint for each of the connection pipes 5a, 5b, and 5c having different diameters, so the cost can be reduced.

In the above embodiment, for example, the number of tubular portions of the pipe joint 40 is three, ie, the first tubular portion 41 , the second tubular portion 42 and the third tubular portion 43 . However, the number of tubular portions may be two, or may be four or more. For example, when the pipe joint 40 has two tubular portions, the pipe joint 40 can be connected to two connecting pipes having different diameters. When the number of tubular portions of the pipe joint 40 is four, for example, the fourth tubular portion is arranged inside the third tubular portion 43, and the third tubular portion and the fourth tubular portion form the third connecting portion. is connected with Thus, when the pipe joint 40 has four cylindrical portions, four connecting pipes having different diameters can be connected.

<Second embodiment>
Next, a second embodiment will be described. 2nd Embodiment is one form of implementation of the lid|cover of this invention. FIG. 10 is a front cross-sectional view of the lid 220 according to the second embodiment, which corresponds to FIG. The lid 220 according to this embodiment is like integrally molding the parent lid 21 and the pipe joint 40 of the first embodiment.

As shown in FIG. 10, the lid 220 has a parent lid 221 and a child lid 222 . The parent lid 221 includes a parent lid main body 231, a first tubular portion 241, a second tubular portion 242, a third tubular portion 243, a flange 246, a first connection portion 247, and a second connection portion. 248.

The parent lid main body 231 has the same configuration as the parent lid main body 31 of the first embodiment, and is fitted to the lid frame 3 . A fitting hole 233 penetrating vertically is formed in the parent lid main body 231 . An annular seal member 234 is attached to the main lid body 231 and contacts the lid frame 3 when the lid 221 is fitted to the lid frame 3 . The first tubular portion 241 is like integrally molding the parent lid tubular portion 32 and the first tubular portion 41 of the first embodiment. The first cylindrical portion 241 is provided on the main lid body 231 so as to surround the fitting hole 233 in bottom view. The first tubular portion 241 extends downward from the edge of the fitting hole 233 in the main lid body 231 . The first tubular portion 241 is a portion that can be fitted to the first connection pipe 5a (see FIG. 3), and is a socket for the first connection pipe 5a. The diameter of the first tubular portion 241 is the first diameter D1 (see FIG. 8). In this embodiment, the first cylindrical portion 241 is formed integrally with the main lid body 231, but may be formed separately.

In this embodiment, the second tubular portion 242, the third tubular portion 243 and the flange 246 are similar to the second tubular portion 42, the third tubular portion 43 and the second flange 46 of the first embodiment, respectively. Since it has a configuration, detailed description is omitted here. The second tubular portion 242 has a second diameter D2 (see FIG. 8), and is arranged inside the first tubular portion 241 in plan view. The third tubular portion 243 has a third diameter D3 (see FIG. 8) and is arranged inside the second tubular portion 242 in plan view. The first connection portion 247 has the same configuration as the first connection portion 47 of the first embodiment. The first connecting portion 247 connects the first tubular portion 241 and the second tubular portion 242 . The first connecting portion 247 has a first inner horizontal plate portion 247a, a first vertical plate portion 247b, and a first outer horizontal plate portion 247c. The second connection portion 248 has the same configuration as the second connection portion 48 of the first embodiment. The second connecting portion 248 connects the second tubular portion 242 and the third tubular portion 243 . The second connection portion 248 has a second inner horizontal plate portion 248a, a second vertical plate portion 248b, and a second outer horizontal plate portion 248c.

The secondary lid 222 fits into a fitting hole 233 formed in the proximal lid main body 231 of the proximal lid 221 . The secondary lid 222 is attached with an annular seal member 235 that contacts the primary lid main body 231 when the secondary lid 222 is fitted to the primary lid 221 .

Even in this embodiment, as in the first embodiment, when the third connecting pipe 5c (see FIG. 5) is connected to the third tubular portion 243 of the parent lid 221, the parent lid 221 is not cut. used in the state. When connecting the second connecting pipe 5b (see FIG. 4) to the second cylindrical portion 242 of the parent lid 221, the second vertical plate portion 248b and the second outer horizontal plate portion 248c of the second connecting portion 248 are It is used in a separated state, that is, in a state in which the third cylindrical portion 243, the flange 246, the second inner horizontal plate portion 248a and the second vertical plate portion 248b of the second connecting portion 248 are separated from the parent lid 221. . When connecting the first connecting portion 5a (see FIG. 3) to the first tubular portion 241 of the parent lid 221, the first vertical plate portion 247b and the first outer horizontal plate portion 247c of the first connecting portion 247 are The separated state, that is, the second cylindrical portion 242, the third cylindrical portion 243, the flange 246, the first inner lateral plate portion 247a and the first vertical plate portion 247b of the first connection portion 247, and the second connection It is used with the portion 248 disconnected. The procedure for connecting any one of the first to third connection pipes 5a to 5c to the pipe line 1 by means of the parent lid 221 is the same as in the first embodiment, and thus description thereof will be omitted here.

In this embodiment, one lid 220 can connect the connection pipes 5a, 5b, and 5c with different diameters and the standpipe 2. FIG. Therefore, it is not necessary to prepare a dedicated pipe joint for each of the connection pipes 5a, 5b, and 5c having different diameters, so the cost can be reduced.

In addition, in this embodiment, the usage method of the lid|cover 220 which connects the standpipe 2 and the connection pipe 5 using the lid|cover 220 can be implement|achieved. The method includes a disconnecting step and a mating step. In the separating step, at least part of the first connecting portion 247 and the second tubular portion 242 are separated from the first tubular portion 241 . In the fitting step, after the separation step, the lid body 231 of the lid 221 is fitted to the lid frame 3 provided at the upper end of the standpipe 2, and the first connecting pipe 5a is fitted to the lid body 231. The first connecting pipe 5 a is fitted into the first cylindrical portion 241 by inserting it into the joint hole 233 from above. By sequentially performing such steps, the standpipe 2 and the first connecting pipe 5a can be connected by the parent lid 221 .

In the above embodiment, the standpipe 2 was buried underground. However, the standpipe 2 may be placed on the ground or inside a building.

2 Standpipe 3 Lid frame 5a First connection pipe 5b Second connection pipe 5c Third connection pipe 10 Pipe joint set 20 Lid 21 Parent lid 22 Child lid 31 Parent lid main body 32 Parent lid cylindrical part 40 Pipe joint 41 First pipe Shaped portion 42 Second tubular portion 43 Third tubular portion 45 First flange 46 Second flange 47 First connection portion 48 Second connection portion

Claims (8)

It has a cover main body formed with a vertically penetrating fitting hole that fits into the cover frame provided at the upper end of the standpipe, and a cover tubular portion extending downward from the cover main body. A pipe joint that connects the parent lid tubular portion of the parent lid and a connection pipe disposed above the parent lid tubular portion,
a first cylindrical portion having a predetermined first diameter and capable of being fitted to the parent lid cylindrical portion;
a second cylindrical portion having a second diameter smaller than the first diameter and arranged inside the first cylindrical portion in plan view;
a first connection portion that connects the first tubular portion and the second tubular portion;
with
the lower end of the first tubular portion is positioned above the lower end of the second tubular portion;
The first connecting portion is
a first inner lateral plate portion projecting radially outward of the second cylindrical portion from the lower end of the second cylindrical portion;
a first vertical plate portion extending upward from the first inner horizontal plate portion;
has
The first vertical plate portion is arranged radially inward of the first tubular portion relative to the inner peripheral surface of the first tubular portion,
A pipe joint , wherein the first connecting portion has a first outer lateral plate portion that connects the first cylindrical portion and the first vertical plate portion . It has a cover main body formed with a vertically penetrating fitting hole that fits into the cover frame provided at the upper end of the standpipe, and a cover tubular portion extending downward from the cover main body. A pipe joint that connects the parent lid tubular portion of the parent lid and a connection pipe disposed above the parent lid tubular portion,
a first cylindrical portion having a predetermined first diameter and capable of being fitted to the parent lid cylindrical portion;
a second cylindrical portion having a second diameter smaller than the first diameter and arranged inside the first cylindrical portion in plan view;
a first connection portion that connects the first tubular portion and the second tubular portion;
with
A pipe joint, wherein the upper and lower positions of the upper end of the first tubular portion are different from the upper and lower positions of the upper end of the second tubular portion. 3. The pipe joint according to claim 1, further comprising a first flange protruding radially outward of said first tubular portion from an outer peripheral surface of said first tubular portion. The pipe joint according to any one of Claims 1 to 3 , wherein at least the first connecting portion is made of resin. a pipe joint according to any one of claims 1 to 4 ;
a parent lid having a parent lid main body in which a fitting hole that is fitted to the lid frame and penetrates vertically is formed, and a parent lid cylindrical portion that extends downward from the parent lid main body;
a secondary lid that fits into the fitting hole;
A set of pipe fittings. A method for connecting the parent-cover tubular portion and the connection pipe by a pipe joint according to any one of claims 1 to 5 , comprising:
The connecting pipe has a first connecting pipe connected to the first tubular portion,
a separating step of separating at least part of the first connecting portion and the second tubular portion from the first tubular portion fitted to the parent lid tubular portion;
a fitting step of, after the separating step, inserting the first connecting pipe into the fitting hole of the main lid body from above to fit the first connecting pipe into the first cylindrical portion;
A method of connecting a pipe fitting, comprising: It has a cover main body formed with a vertically penetrating fitting hole that fits into the cover frame provided at the upper end of the standpipe, and a cover tubular portion extending downward from the cover main body. A method of connecting the parent lid tubular portion and the connecting pipe with a pipe joint that connects the parent lid tubular portion of the parent lid and a connecting pipe arranged above the parent lid tubular portion, ,
The pipe joint is
a first cylindrical portion having a predetermined first diameter and capable of being fitted to the parent lid cylindrical portion;
a second cylindrical portion having a second diameter smaller than the first diameter and arranged inside the first cylindrical portion in plan view;
a first connection portion that connects the first tubular portion and the second tubular portion;
with
The connecting pipe has a first connecting pipe connected to the first tubular portion,
a separating step of separating at least part of the first connecting portion and the second tubular portion from the first tubular portion fitted to the parent lid tubular portion;
a fitting step of, after the separating step, inserting the first connecting pipe into the fitting hole of the main lid body from above to fit the first connecting pipe into the first cylindrical portion;
A method of connecting a pipe fitting, comprising: A method of connecting the standpipe and a connection pipe arranged above the standpipe using a lid that fits into a cover frame provided at the upper end of the standpipe , comprising:
The lid is
a parent lid that can be fitted to the lid frame;
a child lid fitted to the parent lid;
with
The parent lid is
a parent lid main body having a vertically penetrating fitting hole formed therein and fitted to the lid frame;
a first tubular portion extending downward from the main cover body so as to surround the fitting hole in plan view and having a predetermined first diameter;
a second cylindrical portion having a second diameter smaller than the first diameter and arranged inside the first cylindrical portion in plan view;
a first connection portion that connects the first tubular portion and the second tubular portion;
with
The connecting pipe has a first connecting pipe connected to the first tubular portion,
a separating step of separating at least part of the first connecting portion and the second tubular portion from the first tubular portion;
After the separation step, the lid body of the lid is fitted into the lid frame provided at the upper end of the standpipe, and the first connecting pipe is inserted into the fitting hole of the lid body. a fitting step of inserting from and fitting the first connecting pipe to the first cylindrical portion;
How to use the lid, including

Images