JP2022092272A - Joint, joint set, and discharge system - Google Patents

Abstract

To cut off water between a joint and a connection pipe in the joint connected to a connection pipe which may have an inner diameter error.SOLUTION: A joint 30 includes: a cylindrical spigot part 33 having an insertion end part 34 which is inserted into a connection pipe 8; and an annular seal member 37 provided on an outer peripheral surface of the spigot part 33 and having flexibility. The seal member 37 has: a base part 61 provided on the outer peripheral surface of the spigot part 33 and extending in an axial direction of the spigot part; and a contact part 62 which is connected to the base part 61, obliquely extends from the outer peripheral surface of the spigot part 33 so as to be spaced apart from the insertion end part 34 of the spigot part 33 toward the radial outer side of the spigot part 33, and may at least partially contact with an inner peripheral surface of the connection pipe 8. The contact part 62 has: a tip part 66; and a root part 65 provided on the outer peripheral surface of the spigot part 33. A length L31 of the contact part 62 as seen in an obliquely extending direction is longer than a length L 32 of the base part 61 as seen in the axial direction of the spigot part 33.SELECTED DRAWING: Figure 4

Description

The present invention relates to fittings, fitting sets and ejection systems.

Conventionally, a discharge system has been known in which wastewater discharged from each household is discharged to a sewage main. The drainage system is equipped with a drainage facility that drains drainage and a connecting pipeline that connects the sewage main. The connecting pipe line may be composed of, for example, a pottery pipe made of ceramics. As the porcelain connecting pipe becomes obsolete, a part of the aged connecting pipe is replaced with a resin connecting pipe. At this time, since the connecting pipeline made of ceramic and the connecting pipeline made of resin are made of different materials, they cannot be connected by an adhesive, and it is difficult to stop water at the connecting portion.

Therefore, for example, Patent Document 1 discloses a joint that connects a connecting pipe on the upstream side made of resin and a connecting pipe on the downstream side made of ceramic (hereinafter, simply referred to as a ceramic pipe). This joint has a resin joint body in which a socket through which a resin connection pipe is inserted and a spigot to be inserted inside a ceramic pipe are formed, and an outer peripheral surface of the spigot side of the joint body. It is equipped with an annular elastic body attached to. When the spigot of the joint body is inserted into the pottery pipe, the elastic body comes into close contact with the inner peripheral surface of the pottery pipe, so that water can be stopped between the joint and the pottery pipe.

Japanese Patent No. 3413159

However, the porcelain tube is liable to have a dimensional error during manufacturing, and the inner diameter of the porcelain tube is also liable to have an error. Further, even if the pipe is made of concrete or resin other than the ceramic pipe, a slight inner diameter error may occur. Hereinafter, ceramic pipes and pipes made of concrete or resin other than ceramic pipes are generally referred to as connecting pipes. For example, if there is a positive error in the inner diameter of the connecting pipe, the adhesion between the elastic body of the joint and the inner peripheral surface of the connecting pipe is weak when the outlet of the joint body is inserted into the connecting pipe. Become. As a result, it may not be possible to reliably stop water between the joint and the connecting pipe.

Further, in Patent Document 1, a rubber packing along the circumferential direction is attached to the inner peripheral surface of the porcelain tube, and the rubber packing of the porcelain tube and the elastic body of the joint are brought into close contact with each other to stop. It is described to increase the water content. However, it is considered that the rubber packing of the porcelain pipe ages faster than the porcelain pipe, and due to the aging of the packing, it may not be possible to reliably stop the water between the joint and the porcelain pipe. ..

The present invention has been made in view of this point, and an object thereof is a joint or a joint capable of stopping water between the joint and the connecting pipe in a joint connected to a connecting pipe where an inner diameter error may occur. To provide a set and discharge system.

The joint according to the present invention includes a spigot portion and a sealing member. The outlet is a cylinder having an insertion end to be inserted into the connecting tube. The sealing member is provided on the outer peripheral surface of the outlet portion and is a flexible annular member. The seal member is provided on the outer peripheral surface of the outlet portion, is connected to the base portion extending in the axial direction of the outlet portion, and is connected to the base portion. It extends diagonally toward the outside in the direction away from the insertion end of the spigot portion, and has at least a part of the contact portion that can contact the inner peripheral surface of the connection pipe. The length of the contact portion in the diagonally extending direction is longer than the length of the outlet portion in the base portion in the axial direction.

According to the joint, when connecting the connecting pipe to the connecting pipe, the connecting pipe is inserted into the connecting pipe. At this time, the contact portion of the seal member is in a bent state between the outlet portion and the connecting pipe, and is in close contact with the inner peripheral surface of the connecting pipe. Therefore, when the connecting pipe is connected to the spigot portion, water can be stopped between the joint and the connecting pipe. Further, according to the joint, the length of the seal member in the diagonally extending direction at the contact portion is longer than the axial length of the outlet portion at the base portion. As a result, even if an inner diameter error occurs in the connecting pipe, it is easy to come into contact with the inner peripheral surface of the connecting pipe in a state where the contact portion is bent. Therefore, even if an inner diameter error occurs in the connecting pipe, the bending angle of the contact portion of the seal member changes, and the contact portion of the seal member bends between the spigot portion and the connecting pipe. In this state, the elastic force of the contact portion toward the outside of the spigot portion is generated, so that the contact portion is pressed against the inner peripheral surface of the connecting pipe. Therefore, even when an inner diameter error occurs in the connecting pipe, the contact portion can be brought into close contact with the inner peripheral surface of the connecting pipe, so that water can be stopped between the joint and the connecting pipe.

According to a preferred embodiment of the present invention, the contact portion has a tip portion. The tip portion has a convex portion that protrudes in the radial direction toward the outside of the outlet portion.

According to the above aspect, the diameter of the tip portion is increased by the size of the convex portion. Therefore, for example, even when a positive error occurs in the inner diameter of the connecting pipe, the convex portion of the tip portion can be brought into close contact with the inner peripheral surface of the connecting pipe. Therefore, even if there is a positive error in the inner diameter of the connecting pipe, the contact portion can be brought into close contact with the inner peripheral surface of the connecting pipe, so that water can be stopped between the joint and the connecting pipe. can.

According to another preferred aspect of the present invention, the contact portion is provided on the side opposite to the outlet side, and has a curved surface curved so as to be convex on the side opposite to the outlet side. Have.

According to the above aspect, when the spigot portion is inserted into the connecting pipe, the curved surface of the contact portion is in a state of protruding toward the inner peripheral surface of the connecting pipe. Therefore, the inner peripheral surface of the connecting pipe and the curved surface can easily come into contact with each other, and the contact area between the inner peripheral surface of the connecting pipe and the contact portion of the seal member can be increased. Therefore, the water stoppage between the joint and the connecting pipe can be further enhanced.

According to another preferred aspect of the present invention, the joint is provided so as to be recessed in the outer peripheral surface of the outlet portion, and when the contact portion of the seal member bends toward the outlet portion, the joint is described. It is provided with a housing recess in which at least a part of the contact portion is accommodated.

According to the above aspect, the minimum diameter of the contact portion contained in the accommodating recess is reduced by the size of the contact portion accommodated in the accommodating recess when the contact portion is bent toward the outlet side. Can be done. Therefore, when the insertion port portion is inserted into the connecting pipe, at least a part of the contact portion is inserted in the accommodating recess, so that the insertion portion is easy to insert. Further, even if the inner diameter error of the connecting pipe is a minus error of about the minimum diameter of the contact portion contained in the above-mentioned accommodating recess, the insertion port can be inserted into the connecting pipe and connected to the connecting pipe. can.

According to another preferred aspect of the present invention, ribs are provided on the outer peripheral surface of the outlet portion.

According to the above aspect, it is possible to reduce the weight of the spigot portion while reinforcing the spigot portion with ribs. Since the spigot portion is reinforced by ribs, it can be inserted with a larger force when the spout portion is inserted into the connecting pipe.

According to another preferred aspect of the present invention, on the outer peripheral surface of the outlet portion, an annular first groove and an annular second groove along the circumferential direction of the outlet portion are the axes of the outlet portion. It is formed so as to line up in a direction. The seal member is configured to be selectively mountable in one of the first groove and the second groove.

For example, when the range in which the joint is arranged is narrow, the spigot portion may be cut and shortened. According to the above aspect, even if one of the first groove and the second groove (for example, the first groove) is formed by cutting the spigot portion, the other one is separated. A seal member can be mounted in the groove (for example, the second groove). Therefore, even when the outlet portion is cut, the seal member can be attached to the outlet portion after cutting at an appropriate position.

According to another preferred aspect of the present invention, the outer peripheral surface portion of the outlet portion between the first groove and the second groove is cut to cut the outlet portion in the radial direction. It is marked.

According to the above aspect, by cutting the spigot portion along the cut mark, the spigot portion is cut at an appropriate position while leaving one of the first groove and the second groove. Can be done.

According to another preferred aspect of the invention, the fitting comprises a tubular socket into which another connecting tube is inserted. The inner diameter of the receiving portion is larger than the inner diameter of the opening portion. With the central axis of the outlet portion so that a part of the inner peripheral surface of the outlet portion and a part of the inner peripheral surface of the other connecting pipe inserted into the socket portion are flush with each other. The central axis of the receiving portion is displaced from the central axis.

According to the above aspect, there is no step between a part of the inner peripheral surface of the spigot portion and a part of the inner peripheral surface of another connecting pipe inserted into the receiving portion. Therefore, when the drainage is drained, foreign matter and the like contained in the drainage are less likely to be caught, so that the drainage can be smoothly drained.

According to another preferred embodiment of the present invention, the joint has a connecting inclination that connects the receiving portion and the opening portion and has an inclined surface inclined from the receiving portion toward the opening portion. A portion and at least three protrusions that protrude outward in the radial direction of the outlet portion from the inclined surface and that the connection pipe can come into contact with when the outlet portion is inserted into the connection pipe. I have.

When the spigot portion is inserted all the way into the connecting pipe, it is conceivable that the connecting pipe goes over the spigot portion and rides on the inclined surface of the connecting inclined portion. If the connecting pipe rides on an inclined surface, the axis of the connecting pipe and the axis of the spigot portion may be misaligned, so that the connecting pipe and the spout portion may not be properly connected. However, according to the above aspect, when the spigot portion is inserted all the way into the connecting pipe, the connecting pipe comes into contact with the protrusion provided on the inclined surface. Therefore, it is possible to prevent the connecting pipe from riding on the inclined surface. Therefore, the axis of the connecting pipe and the axis of the outlet can easily be aligned with each other, and the connecting pipe and the outlet can be appropriately connected.

The joint set according to the present invention includes a joint and a receiving member connected to the joint. The receiving member includes a connecting receiving portion into which the first connecting pipe is inserted and a connecting opening portion inserted into the joint. The joint includes a receiving portion, a spigot portion, and a sealing member. The receiving portion has a cylindrical shape into which the connecting opening portion of the receiving member is inserted. The outlet portion has a tubular shape having an insertion end portion to be inserted into the second connecting pipe. The sealing member is provided on the outer peripheral surface of the outlet portion and is a flexible annular member. The seal member is provided on the outer peripheral surface of the outlet portion, is connected to the base portion extending in the axial direction of the outlet portion, and is connected to the base portion. It extends diagonally toward the outside in the direction away from the insertion end of the outlet, and has at least a part having a contact portion that can contact the inner peripheral surface of the second connecting pipe. .. The length of the contact portion in the diagonally extending direction is longer than the length of the outlet portion in the base portion in the axial direction.

According to a preferred embodiment of the invention, the fitting set comprises other receiving members connected to the fitting. The other receiving member includes another connecting receiving portion into which the first connecting pipe is inserted, and another connecting opening portion inserted into the joint. The receiving portion of the joint is configured so that one of the connection opening portion of the receiving member and the other connecting opening portion of the other receiving member can be selectively connected. ing.

According to the above aspect, it is possible to connect the receiving member to the receiving portion of the joint and to connect another receiving member. Therefore, it is possible to select a receiving member to be connected to the receiving portion of the joint according to the construction site where the joint set is used.

The discharge system according to the present invention includes any of the above-mentioned joints and a connecting pipe into which the outlet portion of the joint is inserted. The diameter of the tip of the contact portion is larger than the inner diameter of the connecting pipe in a state where the outlet portion is not inserted into the connecting pipe. The outer diameter of the base is smaller than the inner diameter of the connecting pipe.

According to the discharge system, even if an inner diameter error occurs in the connecting pipe, the contact portion of the joint is likely to come into contact with the inner peripheral surface of the connecting pipe. Therefore, in a state where the contact portion of the seal member is bent between the spigot portion and the connecting pipe, the elastic force of the contact portion toward the outside of the spigot portion is generated, so that the contact portion is the inner circumference of the connecting pipe. It will be pressed against the surface. Therefore, even when an inner diameter error occurs in the connecting pipe, the contact portion can be brought into close contact with the inner peripheral surface of the connecting pipe, so that water can be stopped between the joint and the connecting pipe.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a fitting, a fitting set and a discharge system capable of stopping water between the fitting and the connecting pipe in a fitting connected to a connecting pipe where an inner diameter error may occur.

It is a figure which showed schematically the discharge system provided with a joint and a receiving member. It is a top view of the joint and the receiving member which concerns on embodiment. It is a front view of the joint and the receiving member which concerns on embodiment. It is sectional drawing of the joint and the receiving member in the IV-IV cross section of FIG. It is sectional drawing of the joint in the VV cross section of FIG. FIG. 4 is a view corresponding to FIG. 4 showing a joint after cutting the spigot portion. It is sectional drawing of the seal member. It is a front enlarged sectional view of the joint which shows the state which the convex part of the seal member is in contact with the inner peripheral surface of a downstream connection pipe. It is a front enlarged cross-sectional view of the joint which shows the state which a part of the tip part of the sealing member is housed in the housed recess. It is a front view of a joint and other receiving members. It is a front view of a joint and other receiving members. It is a front view of a joint and other receiving members.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described herein are, of course, not intended to specifically limit the invention. In the following drawings, members / parts having the same function are described with the same reference numerals.

As shown in FIG. 1, the joint 30 according to the present embodiment is provided in the middle portion of the discharge system 1 for discharging wastewater. The discharge system 1 is a system in which drainage discharged from a drainage facility (not shown) such as a toilet, a bath, or a kitchen sink is discharged to a sewage main 3.

The discharge system 1 includes, for example, an upstream side pipeline 5 connected to the drainage facility and a downstream side pipeline 7 arranged on the downstream side of the upstream side pipeline 5 and connected to the sewage main pipe 3. There is. The configurations of the upstream side pipeline 5 and the downstream side pipeline 7 are not particularly limited. Here, the upstream side pipeline 5 and the downstream side pipeline 7 are composed of a plurality of pipeline members. Pipeline members include pipes, joints connecting two pipes, or "mass" (eg, public).

In the present embodiment, the upstream side pipeline 5 has an upstream connecting pipe 6. The upstream connecting pipe 6 is a pipe arranged at the most downstream position of the upstream side pipeline 5. The upstream connecting pipe 6 is made of resin and is made of, for example, vinyl chloride resin. In the present embodiment, the upstream connecting pipe 6 is an example of the first connecting pipe of the present invention.

The downstream side pipeline 7 has a downstream connecting pipe 8. The downstream connecting pipe 8 is a pipe arranged at the most upstream position of the downstream side pipeline 7. The downstream connecting pipe 8 is a matching example of the connecting pipe and the second connecting pipe of the present invention. The downstream connecting pipe 8 is a pipe in which an inner diameter error may occur during manufacturing. The downstream connecting pipe 8 is made of, for example, ceramic or concrete (for example, made of reinforced concrete). Here, the ceramic pipe is a so-called ceramic pipe, and the concrete pipe is a so-called Hume pipe. However, the material of the downstream connecting pipe 8 is not particularly limited, and for example, the downstream connecting pipe 8 is made of resin and may be formed of, for example, vinyl chloride resin. Hereinafter, the downstream connecting pipe 8 is assumed to be a ceramic pipe.

The material of the pipeline member constituting the upstream pipeline 5 other than the upstream connecting pipe 6 and the pipeline member constituting the downstream pipeline 7 other than the downstream connecting pipe 8 is not limited and is made of resin. It may be, or it may be made of porcelain or concrete. In the present embodiment, the pipeline member constituting the upstream side pipeline 5 is made of resin, and the pipeline member constituting the downstream side pipeline 7 is made of ceramics.

The joint 30 according to the present embodiment is arranged between the upstream side pipeline 5 and the downstream side pipeline 7, and is the upstream connecting pipe 6 of the upstream side pipeline 5 and the downstream connecting pipe of the downstream side pipeline 7. It connects with 8. Here, the joint 30 is directly connected to the downstream connecting pipe 8, but is indirectly connected to the upstream connecting pipe 6 via the receiving member 20. However, the joint 30 may be directly connected to the upstream connecting pipe 6 without going through the receiving member 20. In the present embodiment, the joint set 10 is composed of the joint 30 and the receiving member 20. The joint set 10 includes a receiving member 20 and a joint 30.

The receiving member 20 is arranged between the upstream connecting pipe 6 of the upstream side pipeline 5 and the joint 30, and is connected to the upstream connecting pipe 6 and the joint 30. As shown in FIG. 2, the receiving port member 20 includes a connecting receiving port portion 21 and a connecting opening portion 22.

As shown in FIG. 4, the connection receiving portion 21 has a cylindrical shape. The upstream connection pipe 6 of the upstream side pipeline 5 is connected to the connection receiving portion 21. The upstream connection pipe 6 is inserted into the connection receiving portion 21. In the present embodiment, the connection receiving portion 21 is a so-called universal receiving port. On the inner peripheral surface of the connection receiving portion 21, a fitting cylinder portion 25 into which the upstream connecting pipe 6 is fitted is provided. The fitting cylinder portion 25 is rotatable with respect to the connection receiving portion 21. By rotating the fitting cylinder portion 25, the angle of the fitting cylinder portion 25 with respect to the connection receiving port portion 21, in other words, the angle of the upstream connecting pipe 6 fitted in the fitting cylinder portion 25 can be adjusted.

In the present embodiment, a rubber annular socket sealing member 27 is provided on the inner peripheral surface of the fitting cylinder portion 25 inside the connection socket portion 21. When the upstream connecting pipe 6 is inserted into the connecting receiving portion 21, the receiving port sealing member 27 comes into contact with and adheres to the outer peripheral surface of the upstream connecting pipe 6 while bending. This makes it possible to improve the water stoppage between the upstream connection pipe 6 and the connection receiving portion 21.

The connection opening portion 22 is inserted into the joint 30, in other words, is fitted into the joint 30. The connection opening portion 22 is continuous with the connection receiving portion 21 and communicates internally. The material for forming the receiving member 20, that is, the connecting receiving portion 21 and the connecting opening portion 22 is not particularly limited. In the present embodiment, the connection receiving portion 21 and the connecting opening portion 22 are made of resin, for example, made of vinyl chloride resin.

Next, the joint 30 will be described in detail. As shown in FIG. 1, the joint 30 according to the present embodiment is arranged between the receiving member 20 connected to the upstream connecting pipe 6 and the downstream connecting pipe 8 of the downstream side pipeline 7, and is arranged between the receiving members 20. It is connected to 20 and the downstream connecting pipe 8. In the following description of the joint 30, the state in which the joint 30 is laid down, that is, the state in which the axial direction of the joint 30 extends in the horizontal direction is used as a reference. The upper part on the paper surface in FIG. 4 is the upper part of the joint 30, and the lower part on the paper surface is the lower part of the joint 30.

As shown in FIG. 4, the joint 30 includes a receiving portion 31, a spigot portion 33, a connecting inclined portion 35, and a sealing member 37. The receiving member 20 is connected to the receiving portion 31, and the upstream connecting pipe 6 of the upstream side pipeline 5 is indirectly connected via the receiving member 20. In the present embodiment, the connection opening portion 22 of the receiving portion member 20 is inserted and fitted into the receiving portion 31. The receiving portion 31 has a cylindrical shape. It should be noted that the inner peripheral surface of the receiving portion 31 is not provided with a sealing member such as the receiving receiving sealing member 27. The receiving portion 31 and the connecting opening portion 22 of the receiving member 20 are fixed to each other by, for example, an adhesive.

The outlet 33 is connected to the downstream pipeline 7 of the discharge system 1. Specifically, the downstream connection pipe 8 made of ceramics of the downstream side pipeline 7 is connected to the outlet portion 33. In the present embodiment, the outlet 33 is inserted into and fitted into the downstream connecting pipe 8. The outlet 33 has a cylindrical shape. The outlet 33 has an insertion end 34 that is inserted into the downstream connecting pipe 8. The insertion end portion 34 constitutes an end portion of the cylindrical outlet portion 33 opposite to the receiving portion 31 side, and as shown by the arrow in FIG. 4, from the insertion end portion 34 to the downstream connecting pipe 8. Insertion is started.

In the present embodiment, as shown in FIG. 2, the axial length L1 of the receiving portion 31 is shorter than the axial length L2 of the opening portion 33. However, the length L1 of the receiving portion 31 may be the same as the length L2 of the opening portion 33, or may be longer than the length L2. In the present embodiment, as shown in FIG. 4, the inner diameter L3 of the receiving portion 31 is larger than the inner diameter L4 of the opening portion 33. In other words, the opening area of the receiving portion 31 is larger than the opening area of the opening portion 33.

The central axis A1 of the receiving portion 31 is arranged so as to be parallel to the central axis A2 of the opening portion 33, and is arranged so as to be offset from the central axis A2. In the present embodiment, a part of the inner peripheral surface of the opening portion 33 (here, the bottom of the pipe) and a part of the inner peripheral surface of the connecting opening portion 22 of the receiving portion member 20 inserted into the receiving portion 31 (in this case, the pipe bottom). Here, the central axis A1 of the receiving portion 31 is arranged so as to be flush with the central axis A2 of the receiving portion 33. The central axis A1 of the receiving portion 31 is arranged above the central axis A2 of the opening portion 33.

As shown in FIG. 3, on the outer peripheral surface of the outlet portion 33, a rib 40 projecting toward the radial outer side of the outlet portion 33 (hereinafter, also simply referred to as the outer side of the outlet portion 33) is provided. It is provided. The rib 40 is an annular shape provided on the outer peripheral surface of the outlet portion 33 so as to be along the circumferential direction of the outlet portion 33. The number of ribs 40 provided on the outer peripheral surface of the insertion port 33 is not particularly limited. In this embodiment, the number of ribs 40 is six. The six ribs 40 are arranged side by side in the axial direction of the outlet portion 33. In the present embodiment, the intervals between the adjacent ribs 40 are different, but may be the same.

The connecting inclined portion 35 is arranged between the receiving portion 31 and the opening portion 33, and connects the receiving portion 31 and the opening portion 33. The receiving portion 31 and the outlet portion 33 communicate with each other via the connecting inclined portion 35. Here, the connecting inclined portion 35 has an inclined surface 42 that inclines downward from the receiving portion 31 toward the outlet portion 33. In this embodiment, the pipe bottom portion of the connecting inclined portion 35 is not inclined.

The connecting inclined portion 35 is provided with a protrusion 45. The protrusion 45 projects from the inclined surface 42 toward the outside of the outlet portion 33. In this embodiment, as shown in FIG. 5, the number of protrusions 45 is three. However, the number of protrusions 45 is not limited to three, and may be four or more. The protrusion 45 is such that the downstream connecting pipe 8 can come into contact with the protrusion 45 when the outlet 33 is inserted into the downstream connecting pipe 8. This prevents the outlet 33 from being further inserted into the back, and prevents the downstream connecting pipe 8 from riding on the inclined surface 42.

In this embodiment, the three protrusions 45 are 45a, 45b, and 45c, respectively. Here, the protrusions 45a and 45b are arranged at the same height in the lower part of the joint 30, and are arranged so as to sandwich the central axis A2 of the difference portion 33 in a plan view. The protrusion 45c is arranged at a position higher than the protrusion 45a and the protrusion 45b, and overlaps with the central axis A2 of the difference port 33 in a plan view. Here, the distance between the protrusion 45a and the protrusion 45b, the distance between the protrusion 45b and the protrusion 45c, and the distance between the protrusion 45c and the protrusion 45a are the same.

The seal member 37 shown in FIG. 3 enhances the water stoppage between the outlet portion 33 and the downstream connecting pipe 8 of the downstream side pipeline 7. The seal member 37 is provided on the outer peripheral surface of the insertion port 33. Specifically, the seal member 37 is provided on the outer peripheral surface of the insertion end portion 34. The seal member 37 has an annular shape along the circumferential direction of the outlet portion 33 and has flexibility. When the seal member 37 is bent, an elastic force is generated outward of the outlet portion 33. The material forming the seal member 37 is not particularly limited. In the present embodiment, the material forming the seal member 37 is an elastic body, for example, rubber.

As shown in FIG. 4, the seal member 37 is provided in the annular groove 50 formed along the circumferential direction of the outlet portion 33. Here, the number of grooves 50 may be one or a plurality. When the number of grooves 50 is plural, the sealing member 37 is selectively provided in one of the plurality of grooves 50 formed in the opening portion 33. In the present embodiment, the groove 50 has a first groove 51 and a second groove 52, and as shown in FIGS. 4 and 6, the seal member 37 has a first groove 51 and a second groove 52. It is configured so that it can be selectively attached to one of the above. The method of fixing the seal member 37 to the groove 50 is not particularly limited. Here, the seal member 37 is fixed by being fitted into the groove 50.

The first groove 51 and the second groove 52 are annular grooves. As shown in FIG. 4, the first groove 51 and the second groove 52 are arranged side by side in the axial direction of the outlet portion 33. The first groove 51 is formed on the outer peripheral surface of the insertion end portion 34 of the uncut opening portion 33, in other words, the end portion on the side to be inserted into the downstream connecting pipe 8, along the circumferential direction of the insertion opening portion 33. Has been done. Specifically, the first groove 51 is formed between the fifth rib 40 and the sixth rib 40 from the receiving portion 31 side. The second groove 52 is formed on the outer peripheral surface of the outlet portion 33 on the receiving portion 31 side of the first groove 51 along the circumferential direction of the outlet portion 33. Specifically, the second groove 52 is formed between the second rib 40 and the third rib 40 from the receiving portion 31 side.

In the present embodiment, the first raised portion 53 is provided at the end of the first groove 51 opposite to the receiving portion 31 side so as to be adjacent to the first groove 51. Similarly, at the end of the second groove 52 opposite to the receiving portion 31 side, a second raised portion 54 is provided so as to be adjacent to the second groove 52. The first raised portion 53 and the second raised portion 54 project outward from the outer peripheral surface of the outlet portion 33. In the present embodiment, the first raised portion 53 and the second raised portion 54 do not protrude from the rib 40, but may protrude from the rib 40.

In the present embodiment, as shown in FIG. 6, when the seal member 37 is provided in the second groove 52, the outlet portion 33 is cut in the radial direction to shorten the axial length of the outlet portion 33. used. When the outlet 33 is cut, the cut portion 33 becomes the insertion end 34. Here, as shown in FIG. 3, a cutting mark 55 indicating the cutting position of the insertion port 33 is attached to the outer peripheral surface of the insertion opening 33. The cut mark 55 is attached to the outer peripheral surface of the outlet portion 33 along the circumferential direction of the outlet portion 33. The cut mark 55 is attached to the outer peripheral surface of the opening portion 33 located between the first groove 51 and the second groove 52, and in the present embodiment, the cut mark 55 is closer to the second groove 52 side than the first groove 51. It is attached to. Specifically, the cut mark 55 is formed between the third rib 40 and the fourth rib 40 from the receiving portion 31 side.

The cut mark 55 may be a line drawn on the outer peripheral surface of the opening portion 33 (for example, a line drawn with a pen), or may be a groove formed on the outer peripheral surface. Further, the cut mark 55 may be a broken line or a continuous straight line. In the present embodiment, the cut mark 55 is a continuous straight groove. The axial position of the outlet 33 of the cut mark 55 is a ridge line indicating the alignment position of the end of the downstream connection pipe 8 when the uncut outlet 33 is inserted into the downstream connection pipe 8. It is the same position as 56 (see FIG. 4). The ridge line 56 is attached to the inner peripheral surface of the outlet portion 33. In the present embodiment, the cut mark 55 indicates the alignment position of the end of the downstream connecting pipe 8 when the uncut outlet portion 33 is inserted into the downstream connecting pipe 8, similarly to the ridge line 56.

Next, the configuration of the seal member 37 will be described in detail. As shown in FIG. 7, the seal member 37 has a base portion 61 and a contact portion 62. As shown in FIG. 4, the base portion 61 is provided on the outer peripheral surface of the outlet portion 33 and extends in the axial direction of the outlet portion 33. In the present embodiment, the base 61 is an annular shape provided in the groove 50.

8 and 9 are front enlarged cross-sectional views of the joint 30 showing a state in which the outlet 33 is inserted into the downstream connecting pipe 8. In FIGS. 8 and 9, an inner diameter error occurs in the downstream connecting pipe 8, and the inner diameter of the downstream connecting pipe 8 in FIG. 9 is smaller than the inner diameter of the downstream connecting pipe 8 in FIG. 8, and a negative inner diameter error occurs. As shown in FIGS. 8 and 9, at least a part of the contact portion 62 comes into contact with the inner peripheral surface of the downstream connecting pipe 8 when the outlet 33 is inserted into the downstream connecting pipe 8 made of ceramics. As shown in FIG. 4, the contact portion 62 is connected to the base portion 61 and is continuous with the base portion 61. Here, the contact portion 62 extends diagonally from the outer peripheral surface of the spigot portion 33 so as to be separated from the insertion end portion 34 of the spigot portion 33 toward the outside of the spigot portion 33. In the present embodiment, the contact portion 62 and the base portion 61 form a cross-sectional shape in a V shape.

In the present embodiment, as shown in FIG. 7, the contact portion 62 has a root portion 65, a tip portion 66, and a connecting portion 67. As shown in FIG. 4, the root portion 65 is provided on the outer peripheral surface of the outlet portion 33 and is a portion continuous with the base portion 61. The tip portion 66 is located closer to the outside of the spigot portion 33 than the root portion 65, and is located closer to the receiving portion 31 than the root portion 65 side. Further, the tip portion 66 is located outside the spigot portion 33 with respect to the rib 40 provided on the outer peripheral surface of the spigot portion 33.

As shown in FIG. 7, the tip portion 66 has a convex portion 68 protruding in the radial direction of the outlet portion 33, that is, in the direction orthogonal to the axial direction of the outlet portion 33. As shown in FIG. 4, in a state where the outlet 33 is not inserted into the downstream connecting pipe 8, the convex portion 68 is a portion of the contact portion 62 located at the position farthest from the outlet 33. be. In the present embodiment, as shown in FIG. 8, when the spigot portion 33 is inserted into the downstream connecting pipe 8, the seal member 37 bends from the root portion 65 of the contact portion 62, and the tip portion 66 is the spigot portion. It bends so as to approach 33. In this way, even if the seal member 37 is in a bent state, the convex portion 68 is in a state of protruding toward the outside of the outlet portion 33.

As shown in FIG. 7, the connecting portion 67 connects the root portion 65 and the tip portion 66. In this embodiment, the contact portion 62 has a curved surface 69. As shown in FIG. 4, the curved surface 69 is provided on the connecting portion 67. The curved surface 69 is provided on the side of the connecting portion 67 opposite to the outlet 33 side, and is curved so as to be convex on the side opposite to the outlet 33 side. In the present embodiment, as shown in FIG. 9, when the spigot portion 33 is inserted into the downstream connecting pipe 8 and the contact portion 62 of the seal member 37 bends so as to approach the spigot portion 33, the curved surface 69 is in a state of being curved so as to be convex outward of the insertion port portion 33.

In the present embodiment, as shown in FIG. 4, when the outlet 33 is not inserted into the downstream connecting pipe 8, the outer diameter L10 of the tip portion 66 of the contact portion 62 is larger than the inner diameter L20 of the downstream connecting pipe 8. Is also large, and is larger than the outer diameter L11 of the root portion 65. The outer diameter L11 of the root portion 65 is smaller than the inner diameter L20 of the downstream connecting pipe 8. Even when the downstream connecting pipe 8 has an inner diameter error, the inner diameter L20 of the downstream connecting pipe 8 is smaller than the outer diameter L10 of the tip portion 66 and larger than the outer diameter L11 of the root portion 65. Here, the outer diameter L10 can be paraphrased as the diameter of the tip of the contact portion 62, and can also be paraphrased as the outer diameter of the convex portion 68. The outer diameter L11 can be rephrased as the outer diameter of the base 61.

For example, the inner diameter L20 of the downstream connecting pipe 8 is 135 mm to 165 mm, preferably 140 mm to 160 mm, and particularly preferably 145 mm to 155 mm. Here, the inner diameter L20 of the downstream connecting pipe 8 is, for example, 150 mm. The inner diameter error of the downstream connecting pipe 8 is ± 5 mm or less, for example, ± 4 mm or less. That is, when the inner diameter error is taken into consideration, the inner diameter L20 of the downstream connecting pipe 8 is 130 mm to 170 mm, preferably 135 mm to 165 mm, and particularly preferably 140 mm to 160 mm. For example, when the inner diameter L20 of the downstream connecting pipe 8 is 150 mm, the inner diameter L20 of the downstream connecting pipe 8 in consideration of the inner diameter error is 145 mm to 155 mm, for example, 146 mm to 154 mm. The diameter L10 of the tip of the contact portion 62 is 165 mm to 175 mm, preferably 170 mm to 173 mm, and particularly preferably 171 mm to 172 mm. Here, the diameter L10 of the tip of the contact portion 62 is, for example, 171.5 mm. Therefore, even when the downstream connecting pipe 8 has an inner diameter error, when the outlet 33 is inserted into the downstream connecting pipe 8, the contact portion 62 is in a bent state, and the downstream connecting pipe 8 is in a bent state. It adheres to the inner peripheral surface.

As shown in FIG. 7, in the seal member 37, the length L31 in the diagonally extending direction of the contact portion 62 is longer than the axial length L32 of the outlet portion 33 in the base portion 61. Here, the length L31 of the contact portion 62 is 1.1 times or more, preferably 1.3 times or more, and particularly preferably 1.5 times or more the length L32 of the base portion 61. The length L31 of the contact portion 62 is 20 mm to 30 mm, preferably 22 mm to 28 mm, and particularly preferably 22 mm to 26 mm. Here, the length L31 of the contact portion 62 is, for example, 24 mm. The length L32 of the base 61 is 10 mm to 20 mm, preferably 13 mm to 18 mm, and particularly preferably 15 mm to 16 mm. Here, the length L31 of the base 61 is, for example, 15.5 mm. Therefore, as shown in FIG. 8, when the contact portion 62 bends toward the insertion end portion 33, the tip of the contact portion 62 protrudes from the base portion 61 to the side opposite to the insertion end portion 34 side. ..

In the present embodiment, as shown in FIG. 9, when the spigot portion 33 is inserted into the downstream connecting pipe 8 and the contact portion 62 of the seal member 37 bends so as to approach the spigot portion 33, the contact portion A part of 62 (here, a part of the tip portion 66) may come into contact with the outer peripheral surface of the insertion portion 33. Here, on the outer peripheral surface of the spigot portion 33, there is a housing recess 57 in which a part of the contact portion 62 (here, a part of the tip portion 66) is accommodated when the contact portion 62 bends toward the spigot portion 33. It is provided. The accommodating recess 57 is formed so as to be recessed on the outer peripheral surface of the insertion port 33, and is annular. The accommodating recess 57 is not recessed from the groove 50, but is recessed from the outer peripheral surface portion of the outlet portion 33 other than the accommodating recess 57.

As shown in FIG. 4, the number of accommodating recesses 57 is the same as the number of grooves 50 in which the sealing member 37 is provided, which is two in the present embodiment. When the seal member 37 is provided in the first groove 51, the one accommodating recess 57 can accommodate a part of the tip portion 66 and can be contacted with the accommodating recess 57. One accommodating recess 57 is provided in the vicinity of the first groove 51, and is arranged closer to the receiving portion 31 than to the first groove 51 side. When the seal member 37 is provided in the second groove 52, the other accommodating recess 57 can accommodate a part of the tip portion 66 and can come into contact with the other accommodating recess 57. The other accommodating recess 57 is provided in the vicinity of the second groove 52, and is arranged closer to the receiving portion 31 than to the second groove 52 side.

The material forming the joint 30, in other words, the receiving portion 31, the opening portion 33, and the connecting inclined portion 35 is not particularly limited. In the present embodiment, the receiving portion 31, the opening portion 33, and the connecting inclined portion 35 are made of the same material as the receiving member 20, and are made of resin. The receiving portion 31, the opening portion 33, and the connecting inclined portion 35 are formed of, for example, vinyl chloride resin.

The configuration of the joint 30 according to the present embodiment has been described above. Next, a construction procedure for connecting the upstream side pipeline 5 and the downstream side pipeline 7 of the discharge system 1 using the joint 30 will be described. In the discharge system 1 according to the present embodiment shown in FIG. 1, for example, the downstream side pipeline 7 made of ceramics is an existing pipeline and is already buried in the ground. The upstream pipeline 5 will be newly used from now on, and will be newly buried in the ground by this construction. In this construction, the upstream pipeline 5 is first buried in the ground.

In the present embodiment, the joint set 10 including the receiving member 20 and the joint 30 is used, and the receiving member 20 and the joint 30 are used in a fixed state. As shown in FIG. 4, in the joint set 10, the connection port portion 22 of the receptacle member 20 is connected to the socket portion 31 of the joint 30. The connection opening 22 of the receiving member 20 is inserted into the receiving portion 31, and the receiving portion 31 and the connecting opening portion 22 are fixed by an adhesive.

The joint set 10 in which the joint 30 and the receiving member 20 are adhesively fixed in this way is carried to the construction site. Next, depending on the distance between the upstream connecting pipe 6 of the upstream side pipeline 5 of the discharge system 1 and the downstream connecting pipe 8 of the downstream side pipeline 7, the axial length of the outlet 33 in the joint 30 is set. Determine and determine the position of the seal member 37. For example, when the distance between the upstream connection pipe 6 and the downstream connection pipe 8 is large, as shown in FIG. 4, the first groove 51 of the outlet 33 is sealed without cutting the outlet 33 of the joint 30. The joint 30 is used with the member 37 provided.

On the other hand, when the distance between the upstream connecting pipe 6 and the downstream connecting pipe 8 is small, as shown in FIG. 6, the outlet 33 of the joint 30 is cut in the radial direction to form a second groove of the outlet 33. A seal member 37 is provided on the 52. At this time, the operator uses a cutting tool (not shown) such as a saw to cut the insertion port 33 in the radial direction. Here, the opening portion 33 is cut using the above-mentioned cutting tool along the cutting mark 55 (see FIG. 3) attached to the outer peripheral surface of the insertion opening portion 33.

As described above, after determining the length of the outlet 33 of the joint 30 and the position of the seal member 37, the joint set 10 between the upstream connection pipe 6 and the downstream connection pipe 8, that is, the receiver fixed to each other. The mouth member 20 and the joint 30 are arranged. After that, as shown in FIG. 4, the receiving member 20 of the joint set 10 and the upstream connecting pipe 6 of the upstream side pipeline 5 are connected. Here, the upstream connection pipe 6 is inserted into the connection receiving portion 21 of the receiving portion 20, and is fitted into the fitting cylinder portion 25 arranged in the connecting receiving portion 21. This makes it possible to connect the upstream pipeline 5 to the receiving member 20.

Next, the joint 30 is connected to the downstream connecting pipe 8. Here, as shown by the arrow in FIG. 4, the outlet 33 of the joint 30 is inserted into the downstream connecting pipe 8 and fitted. At this time, the operator inserts the outlet 33 into the downstream connecting pipe 8 until the end of the downstream connecting pipe 8 comes into contact with or approaches the protrusion 45 provided on the inclined surface 42 of the joint 30. At this time, as shown in FIGS. 8 and 9, the contact portion 62 of the seal member 37 is bent at the root portion 65 and is in a state of being bent toward the outlet portion 33.

In this way, after the end of the downstream connecting pipe 8 comes into contact with or approaches the protrusion 45, the outlet 33 is pulled so that the end of the downstream connecting pipe 8 separates from the protrusion 45. For example, when the outlet 33 is not cut, the end of the downstream connecting pipe 8 is a cut mark 55 (see FIG. 3) attached to the outer peripheral surface of the outlet 33, and the inner peripheral surface of the outlet 33. Pull the spigot 33 until it is placed at the position of the ridge 56 attached to. At this time, a frictional force is generated between the contact portion 62 of the seal member 37 and the inner peripheral surface of the downstream connecting pipe 8. As a result, the contact portion 62 slightly rises from the outlet portion 33, the contact portion 62 and the inner peripheral surface of the downstream connecting pipe 8 are in closer contact with each other, and the water blocking property between the joint 30 and the downstream connecting pipe 8 is further enhanced. be able to.

When the outlet 33 is pulled from the downstream connecting pipe 8 as described above, the seal member 37 may be removed from the groove 50. However, in the present embodiment, the raised portions 53 and 54 are provided next to the grooves 51 and 52, and the raised portions 53 and 54 make it difficult for the seal member 37 to be removed from the groove 50. In this way, the joint 30 can be connected to the downstream pipeline 7.

As described above, in the present embodiment, as shown in FIG. 1, the discharge system 1 includes a joint 10 and a connecting pipe 8. As shown in FIG. 4, the joint set 10 includes a receiving member 20 and a joint 30. The receiving member 20 includes a connecting receiving portion 21 into which the upstream connecting pipe 6 is inserted, and a connecting opening portion 22 inserted into the joint 30. The joint 30 includes a spigot portion 33 and a seal member 37. The outlet 33 is a cylinder having an insertion end 34 to be inserted into the downstream connecting pipe 8. The seal member 37 is provided on the outer peripheral surface of the outlet portion 33 and is a flexible annular member. The seal member 37 has a base portion 61 and a contact portion 62. The base portion 61 is provided on the outer peripheral surface of the outlet portion 33 and extends in the axial direction of the outlet portion 33. The contact portion 62 is connected to the base portion 61 and extends diagonally from the outer peripheral surface of the outlet portion 33 so as to be separated from the insertion end portion 34 of the outlet portion 33 toward the outside in the radial direction of the outlet portion 33. As shown in FIG. 9, at least a part thereof has a contact portion 62 that can contact the inner peripheral surface of the downstream connecting pipe 8. As shown in FIG. 7, the length L31 in the diagonally extending direction at the contact portion 62 is longer than the axial length L32 of the outlet portion 33 at the base portion 61. As shown in FIG. 4, when the outlet 33 is not inserted into the downstream connecting pipe 8, the diameter L10 at the tip of the contact portion 62 is larger than the inner diameter L20 of the downstream connecting pipe 8. The outer diameter L11 of the base 61 is smaller than the inner diameter L20 of the downstream connecting pipe 8.

In the present embodiment, when the downstream connecting pipe 8 is connected to the outlet 33, the outlet 33 is inserted into the downstream connecting pipe 8. At this time, as shown in FIG. 9, the contact portion 62 of the seal member 37 is in a bent state between the outlet portion 33 and the downstream connecting pipe 8, and is in close contact with the inner peripheral surface of the downstream connecting pipe 8. Therefore, when the downstream connecting pipe 8 is connected to the outlet portion 33, water can be stopped between the joint 30 and the downstream connecting pipe 8. Further, in the present embodiment, as shown in FIG. 4, the diameter L10 at the tip of the contact portion 62 is larger than the inner diameter L20 of the downstream connecting pipe 8 when the outlet portion 33 is not inserted into the downstream connecting pipe 8. big. Therefore, even if an inner diameter error occurs in the downstream connecting pipe 8, the contact portion 62 is likely to come into contact with the inner peripheral surface of the downstream connecting pipe 8 in a bent state. Therefore, even if an inner diameter error occurs in the downstream connecting pipe 8, the bending angle of the contact portion 62 of the seal member 37 changes, and the contact portion 62 of the seal member 37 is connected downstream to the outlet 33. Since the elastic force of the contact portion 62 toward the outside of the outlet portion 33 is generated in the bent state with the pipe 8, the contact portion 62 is pressed against the inner peripheral surface of the downstream connecting pipe 8. Become. Therefore, even if an inner diameter error occurs in the downstream connecting pipe 8, the contact portion 62 can be brought into close contact with the inner peripheral surface of the downstream connecting pipe 8, so that between the joint 30 and the downstream connecting pipe 8. Can be stopped.

In the present embodiment, the tip portion 66 has a convex portion 68 that protrudes radially toward the outside of the outlet portion 33. The diameter of the tip portion 66 is increased by the size of the convex portion 68. Therefore, for example, even if a positive error occurs in the inner diameter L20 of the downstream connecting pipe 8, as shown in FIG. 8, the convex portion 68 of the tip portion 66 is brought into close contact with the inner peripheral surface of the downstream connecting pipe 8. be able to. Therefore, even if there is a positive error in the inner diameter L20 of the downstream connecting pipe 8, the contact portion 62 can be brought into close contact with the inner peripheral surface of the downstream connecting pipe 8, so that the joint 30 and the downstream connecting pipe 8 can be brought into close contact with each other. The water can be stopped between and.

In the present embodiment, as shown in FIG. 4, the contact portion 62 is provided on the side opposite to the spigot portion 33 side and the connecting portion 67 connecting the tip portion 66 and the root portion 65, and the spigot portion 33. It has a curved surface 69 that is curved so as to be convex on the side opposite to the side. As a result, as shown in FIG. 9, when the outlet 33 is inserted into the downstream connecting pipe 8, the curved surface 69 provided in the connecting portion 67 projects toward the inner peripheral surface of the downstream connecting pipe 8. It will be in the state of. Therefore, the inner peripheral surface of the downstream connecting pipe 8 and the curved surface 69 can easily come into contact with each other, and the contact area between the inner peripheral surface of the downstream connecting pipe 8 and the contact portion 62 of the seal member 37 can be increased. Therefore, the water stoppage between the joint 30 and the downstream connecting pipe 8 can be further enhanced.

In the present embodiment, the joint 30 is provided so as to be recessed in the outer peripheral surface of the outlet portion 33, and when the contact portion 62 of the seal member 37 bends toward the outlet portion 33, at least a part of the contact portion 62 ( Here, it is provided with a housing recess 57 in which (at least a part of the tip portion 66) is accommodated. As a result, the minimum diameter of the tip portion 66 when the contact portion 62 is bent toward the outlet portion 33 can be reduced by the size of the tip portion 66 accommodated in the accommodation recess 57. Therefore, when the insertion port 33 is inserted into the downstream connecting pipe 8, at least a part of the tip end portion 66 is inserted in a state of being accommodated in the accommodating recess 57, so that it is easy to insert. Further, even if the inner diameter error of the downstream connecting pipe 8 is a negative error of about the minimum diameter of the tip portion 66, the insertion port 33 is inserted into the downstream connecting pipe 8 and connected to the downstream connecting pipe 8. Can be done.

In the present embodiment, as shown in FIG. 4, a plurality of ribs 40 are provided on the outer peripheral surface of the outlet portion 33. As a result, the weight of the outlet 33 can be reduced while the outlet 33 is reinforced by the rib 40. Since the outlet 33 is reinforced by the rib 40, the outlet 33 can be inserted with a larger force when the outlet 33 is inserted into the downstream connecting pipe 8.

In the present embodiment, on the outer peripheral surface of the outlet 33, the annular first groove 51 and the annular second groove 52 along the circumferential direction of the outlet 33 are arranged in the axial direction of the outlet 33. It is formed. As shown in FIGS. 4 and 6, the seal member 37 is configured to be selectively mountable in one of the first groove 51 and the second groove 52. For example, when the range in which the joint 30 is arranged is narrow, the outlet portion 33 may be cut and shortened. In such a case, as shown in FIG. 6, even if the opening portion 33 is cut and the portion where the first groove 51 is formed is cut off, the remaining one second groove 52 is sealed. The member 37 can be attached. Therefore, even when the outlet 33 is cut, the seal member 37 can be attached to the outlet 33 after the cut at an appropriate position.

In the present embodiment, as shown in FIG. 3, the outer peripheral surface portion of the opening portion 33 between the first groove 51 and the second groove 52 is cut to cut the opening portion 33 in the radial direction. A mark 55 is attached. As a result, by cutting the spigot portion 33 along the cut mark 55, the spigot portion 33 is placed at an appropriate position while leaving one of the first groove 51 and the second groove 52. Can be disconnected.

In the present embodiment, as shown in FIG. 4, the joint 30 includes a tubular receiving portion 31 into which the upstream connecting pipe 6 is inserted. The inner diameter L3 of the receiving portion 31 is larger than the inner diameter L4 of the opening portion 33. A part of the inner peripheral surface of the outlet 33 (here, the bottom of the pipe) and a part of the inner peripheral surface of the upstream connecting pipe 6 inserted into the receiving portion 31 (here, the bottom of the pipe) are flush with each other. As described above, the central axis A2 of the opening portion 33 and the central axis A1 of the receiving portion 31 are arranged so as to be offset from each other. Therefore, there is no step between the inner peripheral surface located at the bottom of the outlet 33 and the inner peripheral surface located at the bottom of the upstream connecting pipe 6 inserted into the receiving portion 31. Therefore, when the drainage is drained, foreign matter and the like contained in the drainage are less likely to be caught, so that the drainage can be smoothly drained.

In the present embodiment, the joint 30 has a connecting inclined portion 35 having an inclined surface 42 which connects the receiving portion 31 and the outlet portion 33 and is inclined from the receiving portion 31 toward the opening portion 33, and an inclined surface. At least three protrusions 45 (see FIG. 5) that project outward from 42 in the radial direction and that the downstream connection pipe 8 can abut when the outlet 33 is inserted into the downstream connection pipe 8. And have. For example, when the outlet 33 is inserted all the way into the downstream connecting pipe 8, it is conceivable that the downstream connecting pipe 8 goes over the outlet 33 and rides on the inclined surface 42 of the connecting inclined portion 35. If the downstream connecting pipe 8 rides on the inclined surface 42, the axis of the downstream connecting pipe 8 and the axis of the outlet 33 are misaligned, so that the downstream connecting pipe 8 and the outlet 33 may not be properly connected. .. However, in the present embodiment, when the outlet 33 is inserted all the way into the downstream connecting pipe 8, the downstream connecting pipe 8 comes into contact with the protrusion 45 provided on the inclined surface 42. Therefore, it is possible to prevent the downstream connecting pipe 8 from riding on the inclined surface 42. Therefore, the axis of the downstream connecting pipe 8 and the axis of the outlet portion 33 are likely to match, and the downstream connecting pipe 8 and the outlet portion 33 can be appropriately connected.

As shown in FIG. 4, the joint set 10 according to the present embodiment includes a receiving member 20 and a joint 30, and has a connection opening portion 22 of the receiving member 20 and a receiving port of the joint 30. It was used in a state where it was connected to the unit 31. However, the joint set 10 includes other receiving members other than the receiving member 20, for example, another receiving member 20A (see FIG. 10), another receiving member 20B (see FIG. 11), and other receiving ports. A member 20C (see FIG. 12) may be provided.

Here, as shown in FIG. 10, the other receiving port member 20A includes a connecting receiving port portion 21A and a connecting opening portion 22A. As shown in FIG. 11, the other receiving member 20B includes a connecting receiving portion 21B and a connecting opening portion 22B. As shown in FIG. 12, the other receiving member 20C includes a connecting receiving portion 21C and a connecting opening portion 22C. Here, the connection port portions 22A, 22B, and 22C have the same configuration and shape as the connection port portion 22 of the receiving port member 20 shown in FIG. 4, and are inserted into the receiving portion 31 of the joint 30. It is a thing. Further, the connection port portions 22A, 22B, and 22C are fixed to the receiving port portion 31 by an adhesive.

The connection receiving portions 21A, 21B, and 21C are connected to the upstream connecting pipe 6 of the upstream side pipeline 5, and are connected to the upstream connecting pipe 6, similarly to the connecting receiving portion 21 of the receiving member 20 shown in FIG. 6 is inserted. However, the connection receiving portions 21A, 21B, and 21C are different in configuration or shape from the connection receiving portions 21. Further, the connection receiving portions 21A, 21B, and 21C also have different configurations or shapes. For example, the connection receiving port 21A shown in FIG. 10 is a so-called flexible receiving port. The connection receiving portion 21B shown in FIG. 11 is a so-called rubber ring receiving port. The connection receiving portion 21C shown in FIG. 12 is a so-called universal receiving portion, but its shape is different from that of the connecting receiving portion 21 shown in FIG. As described above, the receiving members 20, 20A, 20B, and 20C have different configurations or shapes of the connecting receiving portions 21, 21A, 21B, and 21C, and are different in type.

In the present embodiment, the joint 30 is configured so that any one of the receiving members 20, 20A, 20B, and 20C of different types can be selectively connected. In other words, the joint 30 is configured so that any one of the connection opening portions 22, 22A, 22B, 22C of the receiving members 20, 20A, 20B, and 20C can be selectively connected. For example, which of the receiving members 20, 20A, 20B, and 20C is most appropriate to be used may differ depending on the construction site. Therefore, in the present embodiment, any of the receiving members 20, 20A, 20B, and 20C can be selectively connected to the receiving portion 31 of the joint 30. Therefore, the most appropriate receiving member among the receiving members 20, 20A, 20B, and 20C can be selected according to the construction site where the joint set 10 is used. Then, with the selected receiving member connected to the joint 30, the upstream side pipeline 5 and the downstream side pipeline 7 of the discharge system 1 can be connected.

6 Upstream connection pipe (first connection pipe)
8 Downstream connection pipe (connection pipe, second connection pipe)
10 Fitting set 20 Receptacle member (other connection pipe)
20A, 20B, 20C Other receiving parts 21 Connection receiving parts 21A, 21B, 21C Connection receiving parts (other connecting receiving parts)
22 Connection outlets 22A, 22B, 22C Connection outlets (other connection outlets)
30 Fitting 31 Receptacle 33 Insertion end 35 Connection inclined part 37 Sealing member 40 Rib 42 Inclined surface 45 Protrusion 51 1st groove 52 2nd groove 55 Cutting mark 57 Storage recess 62 Contact part 65 Root part 66 Tip Part 67 Connecting part 68 Convex part 69 Curved surface

Claims (12)

A cylindrical outlet with an insertion end that is inserted into the connecting tube,
An annular sealing member provided on the outer peripheral surface of the outlet portion and having flexibility, and
Equipped with
The seal member is
A base portion provided on the outer peripheral surface of the outlet portion and extending in the axial direction of the outlet portion, and a base portion thereof.
It is connected to the base portion and extends diagonally from the outer peripheral surface of the spigot portion so as to be away from the insertion end portion of the spigot portion toward the outside in the radial direction of the spout portion, and at least a part thereof is formed. A contact portion that can contact the inner peripheral surface of the connecting pipe and
Have,
A joint whose length in the diagonally extending direction at the contact portion is longer than the axial length of the outlet portion at the base portion. The contact portion has a tip portion and has a tip portion.
The joint according to claim 1, wherein the tip portion has a convex portion protruding outward in the radial direction of the outlet portion. The joint according to claim 1 or 2, wherein the contact portion is provided on a side opposite to the spigot portion side and has a curved surface curved so as to be convex on the side opposite to the spigot portion side. .. The claim is provided with a housing recess provided so as to be recessed in the outer peripheral surface of the outlet portion, and at least a part of the contact portion can be accommodated when the contact portion of the seal member bends toward the outlet portion. The joint described in any one of 1 to 3. The joint according to any one of claims 1 to 4, wherein ribs are provided on the outer peripheral surface of the outlet portion. On the outer peripheral surface of the outlet portion, an annular first groove and an annular second groove along the circumferential direction of the outlet portion are formed so as to be aligned in the axial direction of the outlet portion.
The joint according to any one of claims 1 to 5, wherein the seal member is configured to be selectively mountable in one of the first groove and the second groove. The sixth aspect of claim 6, wherein the outer peripheral surface portion of the outlet portion between the first groove and the second groove is provided with a cutting mark for cutting the outlet portion in the radial direction. Fitted joint. It has a cylindrical socket into which other connecting tubes can be inserted.
The inner diameter of the receiving portion is larger than the inner diameter of the opening portion.
With the central axis of the outlet portion so that a part of the inner peripheral surface of the outlet portion and a part of the inner peripheral surface of the other connecting pipe inserted into the socket portion are flush with each other. The joint according to any one of claims 1 to 7, wherein the central axis of the receiving portion is displaced from the central axis. A connecting inclined portion that connects the receiving portion and the opening portion and has an inclined surface inclined from the receiving portion toward the opening portion.
With at least three protrusions that project outward from the inclined surface in the radial direction of the spigot portion, and when the spigot portion is inserted into the connecting pipe, the connecting pipe can come into contact with the connecting pipe.
8. The joint according to claim 8. Fittings and
With the receiving member connected to the joint,
Equipped with
The receiving member is
The connection socket into which the first connection pipe is inserted, and
The connection port inserted into the joint and the connection port
Equipped with
The joint is
A cylindrical receiving portion into which the connecting opening portion of the receiving member is inserted, and
A cylindrical outlet having an insertion end to be inserted into the second connecting tube,
An annular sealing member provided on the outer peripheral surface of the outlet portion and having flexibility, and
Equipped with
The seal member is
A base portion provided on the outer peripheral surface of the outlet portion and extending in the axial direction of the outlet portion, and a base portion thereof.
It is connected to the base portion and extends diagonally from the outer peripheral surface of the outlet portion so as to be away from the insertion end portion of the outlet portion toward the outside in the radial direction of the outlet portion, and at least a part thereof is formed. A contact portion that can contact the inner peripheral surface of the second connecting pipe,
Have,
A joint set in which the length in the diagonally extending direction at the contact portion is longer than the axial length of the outlet portion at the base portion. With other receptacles connected to the fitting
The other receiving member is
With the other connection receiving portion into which the first connecting pipe is inserted,
With other connection openings inserted into the joint,
Equipped with
The receiving portion of the joint is configured so that one of the connection opening portion of the receiving member and the other connecting opening portion of the other receiving member can be selectively connected. The fitting set according to claim 10. The joint according to any one of claims 1 to 9 and
A connecting pipe into which the outlet portion of the joint is inserted, and
Equipped with
In a state where the outlet portion is not inserted into the connecting pipe, the diameter of the tip of the contact portion is larger than the inner diameter of the connecting pipe.
A discharge system in which the outer diameter of the base is smaller than the inner diameter of the connecting pipe.

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