TW201506294A - Pipe joint - Google Patents

Abstract

A pipe joint (10) includes: a joint main body (16) that is formed in a cylindrical shape from a resin material, a pipe body (40) and a pipe body (60) each being connected to both ends of the joint main body (16), and the inside of the joint main body (16) constituting a flow passage (11); a plate-like flange portion (50) that is formed integrally with the joint main body (16), overhangs from an outer perimeter of the joint main body (16), and is attached to an installation object (in Figure 1, a floor (44)); and a recessed portion (in Figure 1, a first groove portion (54) and a second groove portion (56)) that is formed in at least one of a first plate face (50A) of a side that contacts the installation object of the flange portion (50) or a second plate face (50B) that is an opposite side to the first plate face (50A), is located at the root side of the plate-like flange portion (50) that overhangs from the outer perimeter of the joint main body (16), and surrounds the flow passage (11) when looking from the axial direction of the flange portion (50).

Description

Pipe joint

The present invention relates to a resin pipe joint.

As a conventional pipe joint with a flange, it is known to connect a joint portion of a pipe body with a flange portion for attaching the joint portion to an object to be mounted (for example, a floor or a wall). For example, a bronze or brass or the like is integrally molded (for example, Japanese Laid-Open Patent Publication No. 2011-137526).

In recent years, from the viewpoint of cost reduction or weight reduction of the flange-attached pipe joint, the resinization of the above-mentioned integrally formed product has progressed.

However, when the flanged pipe joint is attached to the object to be attached, an external force acts on the joint portion, and the stress tends to concentrate on the boundary between the joint portion and the flange portion, so that the integrally molded product is resinized. Therefore, it is necessary to increase the thickness of the boundary portion between the joint portion and the flange portion, or to use a special high-strength resin or the like to suppress the occurrence of cracks from the stress concentration portion (the boundary portion) and to reduce the risk of water leakage.

The present invention has been made in view of the above problems, and an object thereof is to provide a pipe joint which can suppress cost and which can ensure water leakage resistance even if excessive force acts.

A pipe joint according to a first aspect of the present invention has a joint body made of a resin and has a tubular shape, and a pipe body is connected to each of the two ends, and a flow passage is formed inside; a plate-shaped flange portion is coupled to The joint main body is integrally formed and protruded from the outer periphery of the joint main body, and is attached to the object to be attached; and the concave portion is formed on the first surface and the opposite side of the flange portion where the mounting object meets At least one surface of the second surface on the opposite side of the first surface is disposed on the root side of the flange portion, and the flow path is surrounded by the axial direction of the joint body.

According to the pipe joint described in the present invention, the cost can be suppressed, and the water leakage resistance can be ensured even if the action is excessive.

10‧‧‧ pipe joint

11‧‧‧ flow path

12‧‧‧ Body Department

12A‧‧‧ surrounding ditch

12B‧‧‧ female thread

12S‧‧‧ outer perimeter

13‧‧‧ wall

14‧‧‧Intermediate

14A‧‧‧ front end

16‧‧‧Connector body

18‧‧‧Cap

18B‧‧‧Little Trails Department

20‧‧‧Insert hole

22‧‧‧ release ring

22A‧‧‧Protruding

22B‧‧‧ front end

24‧‧‧Waterproof ring

30‧‧‧Lock ring

31‧‧‧ Ring Department

36‧‧‧ claws

40, 60‧‧‧ body

44‧‧‧floor

44A‧‧‧ Ground

44H‧‧‧ floor hole

46‧‧‧stopper

46A‧‧‧ screw head

46B‧‧‧Spiral Department

50‧‧‧Flange

50A‧‧‧1st board

50B‧‧‧2nd board

50C‧‧‧ outer edge

52‧‧‧through holes

52A‧‧‧ Hole Department

52B‧‧‧Cone

54‧‧‧1st ditch

54A‧‧‧Ditch wall

54B‧‧‧dump bottom

56‧‧‧2nd ditch

60A‧‧‧ male thread

Fig. 1 is a half cross-sectional view showing a pipe joint of a first embodiment.

Figure 2 is an enlarged view of the arrow 2X portion of Figure 1.

Fig. 3 is a plan view showing a second plate surface of a flange portion of the pipe joint of the first embodiment.

Fig. 4 is a cross-sectional view taken along line 4X-4X of Fig. 1, and is also a bottom view of the first plate surface of the flange portion.

Fig. 5 is a half cross-sectional view showing the pipe joint in a state in which the pipe body is connected to the pipe joint of the first embodiment.

Fig. 6 is a cross-sectional view showing a state in which the pipe joint of the first embodiment is excessively applied in the axial direction of the pipe joint.

Fig. 7 is a bottom view of the first plate surface of the flange portion of the pipe joint of the second embodiment.

(First embodiment)

Hereinafter, a first embodiment of the present invention will be described based on the drawings.

Fig. 1 is a half cross-sectional view showing the pipe joint 10 of the first embodiment before being inserted into the pipe body 40.

The pipe joint 10 has a resin main body 16 which is formed in a tubular shape and which constitutes the flow path 11 inside. One end of the joint main body 16 (upper end in Fig. 1) is connected to the tubular body 60, and the other end (lower end in Fig. 1) is connected to the tubular body 40. By connecting the tubular body 60 and the tubular body 40 to both ends of the joint main body 16, the flow passage in the tubular body 60 and the flow passage in the tubular body 40 are connected through the flow passage 11.

The joint main body 16 is configured by a cylindrical main body portion 12 formed of a resin material, and a cylindrical intermediate portion 14 formed of a resin material and externally inserted into the main body portion 12. In addition, the body part The inside of 12 will constitute the flow path 11. The main body portion 12 and the intermediate portion 14 may be formed of the same material or may be formed of a different resin material. Further, the main body portion 12 and the intermediate portion 14 are molded by, for example, two-color molding or insert molding.

The pipe joint 10 has a tubular body 18 formed of a resin material. The cap body 18 is externally inserted into the front end side of the intermediate portion 14 to be engaged. An annular insertion hole 20 into which the tubular body 40 is inserted is formed between the cap body 18 and the intermediate portion 14 and the main body portion 12.

The inner side of the cap body 18 is provided with a metal (for a metal (for example, stainless steel or the like) excellent in liquid resistance) for holding the tubular body 40 in the insertion hole 20 (locking ring 30). The lock ring 30 has a substantially V-shaped ring (annular body) in cross section, and the slightly V-shaped opening side is disposed toward the other end side of the joint main body 16 (the insertion side of the pipe body 60). Then, the opening side of the lock ring 30 faces the front end portion 14A of the intermediate portion 14, and a part of the inner side surface of the slightly V-shaped portion comes into contact with the front end portion 14A. Further, the lock ring 30 allows the claw portion 36 on the inner peripheral side to be fitted into the outer surface of the pipe body 40.

The inner wall of the cap body 18 is formed with a tapered surface 18A that can be joined to the slightly V-shaped outer side surface of the lock ring 30. The tapered surface 18A is formed to be reduced in diameter toward the inlet side of the insertion hole 20.

The inner side of the cap body 18 is inserted on the inlet side of the insertion hole 20 from the lock ring 30 (here, the same side as the other end side of the joint main body 16), and the axial direction of the pipe joint 10 is inserted. A release ring 22 that moves (synonymous with the axial direction of the joint body 16). The release ring 22 is formed in a slightly cylindrical shape made of a resin material, and the inner wall constitutes a part of the insertion hole 20.

The outer periphery of the insertion hole 20 of the release ring 22 (here, the same side as the one end side of the joint main body 16) is formed with a projection 22A in the peripheral direction, and is formed by being in contact with the inner circumference of the cap 18 The small diameter portion 18B prevents the cap 18 from being pulled out. The front end 22B of the protruding portion 22A is formed into a tapered shape having a narrow front end, and is disposed along the outer peripheral surface of the lock ring 30 on the radially inner side.

The main body portion 12 is formed with two peripheral groove portions 12A on the outer circumferential surface of the insertion hole 20, and a rubber-made annular waterproof ring 24 is fitted to the peripheral groove portions 12A.

A wall surface 13 having an outer diameter-expanded diameter is formed on the innermost side of the insertion hole 20 on the inner side of the peripheral groove portion 12A of the main body portion 12. The wall surface 13 is connected to the front end of the tubular body 40 inserted into the insertion hole 20. That is, the wall surface 13 is used as a stopper of the pipe body 40.

Further, one end side of the main body portion 12 (synonymous with one end side of the joint main body 16) is formed with a female screw 12B that connects (threads) one end of the male thread 60A formed by the tubular body 60. Also, one of the main body portions 12 The end (one end of the joint main body 16) is formed with a flange portion 50 for mounting toward the object to be attached (the floor panel 44 in the present embodiment). The details of the flange portion 50 will be described in detail later.

The pipe body 40 of the present embodiment is made of resin, and the pipe body 60 is made of metal. Further, the pipe body 40 is not limited to a resin, and may be made of rubber or metal (a metal material into which the claw portion 36 of the lock ring 30 can be fitted) or other materials. Further, the pipe body 60 is not limited to metal, and may be made of high-strength resin.

3 is a plan view showing the second plate surface 50B of the flange portion 50 of the pipe joint 10 shown in FIG. 1, and FIG. 4 is a view showing the first plate surface 50A of the flange portion 50 of the pipe joint 10 shown in FIG. Bottom view. The flange portion 50 is integrally formed with the main body portion 12 and protrudes in the radial direction from the outer periphery of one end of the main body portion 12. Further, the flange portion 50 has a plate shape (in the present embodiment, a disk shape). In the flange portion 50, the first plate surface 50A on the other end side of the joint main body 16 is placed in contact with the floor surface 44A of the floor panel 44 to be described later, and the second plate surface 50B on the one end side of the joint main body 16 faces outward. (In the present embodiment, the system is facing upwards).

As shown in FIG. 3, the flange portion 50 is formed with a plurality of through holes 52 for attaching the flange portion 50 to the floor surface 44A of the floor panel 44 using the stopper 46. The through holes 52 are formed on the outer edge side (radially outer side) of the flange portion 50, and are formed with a space therebetween so that the center angle of the flange portion 50 is equal in the circumferential direction. Further, in the present embodiment, the through hole 52 is formed in the flange portion 50. However, the present invention is not limited to this configuration, and a slit or the like which is opened to the outside in the radial direction may be formed in the flange portion 50 instead of the through hole 52. The flange portion 50 is attached to the floor surface 44A by the stopper 46 using the slit. Further, both the through hole 52 and the slit may be formed in the flange portion 50.

As shown in FIG. 2, the through hole 52 is configured by a hole portion 52A and a tapered portion 52B. The hole portion 52A allows the screw portion 46B of the stopper 46 to pass therethrough, and the tapered portion 52B is tapered to accommodate the screw head portion 46A of the stopper 46 to be described later.

Although not shown in FIG. 5, the flange portion 50 is fixed to the floor panel 44 by the stopper 46. As shown in FIG. 1, the stopper 46 is constituted by a screw head 46A and a screw portion 46B. The stopper 46 is a self-tapping screw that can lock the screw portion 46B toward the floor panel 44, that is, a countersunk screw. In the through hole 52, the screw portion 46B of the stopper 46 is inserted into the hole portion 52A, and the lower surface (conical surface) of the screw head portion 46A is in contact with the tapered portion 52B. As a result, the flange portion 50 is fixed to the floor panel 44 by the stopper portion 46.

Further, in another embodiment of the present invention, the stopper 46 may be a screw other than the countersunk screw (for example, a flat head screw or the like), and the through hole 52 may be a hole having a fixed diameter through which the stopper 46 can pass.

As shown in FIG. 2 and FIG. 4, the first plate surface 50A on the side where the floor portion 44A of the flange portion 50 is in contact with each other (an example of the first surface of the present invention) is on the outer edge 50C side of the flange portion 50. The first groove portion 54 (an example of a concave portion formed by the first surface of the present invention) is formed on the root side (in other words, on the radially inner side of the flange portion 50). The first groove portion 54 is formed in the axial direction of the joint main body 16 (in the present embodiment, in the same direction as the thickness direction of the flange portion 50), and is disposed on the first plate surface 50A so as to surround the flow path 11. . Specifically, the first groove portion 54 is formed in a ring shape with the flow path 11 as a center (in the present embodiment, it is an annular shape). Further, the first groove portion 54 of the present embodiment is formed in the vicinity of the root portion of the flange portion 50.

As shown in FIG. 2, the first groove portion 54 is a groove wall surface in which a curved bottom portion 54B (the deepest portion of the groove) curved in the arc shape and a radially inner side (the root portion side of the flange portion 50) are curved in an arc shape. An example of the concave wall surface of the invention is 54A and a groove wall surface 54C on the radially outer side (the outer edge 50C side of the flange portion 50). Further, in the present embodiment, the radius of curvature of the groove wall surface 54A is larger than the radius of curvature of the groove bottom portion 54B. Further, the groove wall surface 54A is curved in an arc shape while smoothly continuing to the outer peripheral surface 12S of the main body portion 12. Specifically, the outer peripheral surface 12S of the main body portion 12 is curved in an arc shape so that the outer diameter gradually increases toward the flange portion 50, and the curved portion and the groove portion surface 54A are smoothly continuous.

Further, in the present embodiment, the curved portion of the outer peripheral surface 12S and the groove wall surface 54A are curved at the same radius of curvature to constitute one curved surface.

As shown in FIGS. 2 and 3, the second plate surface 50B (an example of the second surface of the present invention) opposite to the first plate surface 50A of the flange portion 50 is outside the flange portion 50. On the edge 50C side, a second groove portion 56 (an example of a concave portion formed by the second surface of the present invention) is formed on the root side. The second groove portion 56 is formed in the axial direction of the joint main body 16 (the thickness direction of the flange portion 50), and is provided on the second plate surface 50B so as to surround the flow path 1. Specifically, the second groove portion 56 is formed in a ring shape with the flow path 11 as a center (in the present embodiment, it is an annular shape). Further, as shown in FIG. 2, the second groove portion 56 has a cross-sectional shape formed in an arc shape, and a part (the radially inner portion of the second groove portion 56) is formed to extend across one end surface of the main body portion 12. Further, the present invention is not limited to the above configuration. Alternatively, one of the second groove portions 56 may not be formed to span one end surface of the main body portion 12. For example, the entire second groove portion 56 may be formed on the second plate surface 50B.

As shown in FIG. 1 and FIG. 4, in the present embodiment, one portion of the first groove portion 54 (the radially inner portion of the first groove portion 54) and one portion of the second groove portion 56 are observed in the axial direction of the joint main body 16. The radially outer portions of the groove portions 56 overlap. Further, the present invention is not limited to the above configuration, and the first groove portion 54 and the second groove portion 56 may not overlap each other as viewed in the axial direction of the joint main body 16.

In the present embodiment, the main body portion 12 and the flange portion 50 are integrally molded products of the same resin material. Here, as the resin material forming the main body portion 12 and the flange portion 50, from the viewpoint of mechanical strength, polyacetal resin (POM), polyamine (PA), polycarbonate (PC) is preferably used. ), engineering plastics such as polyethylene terephthalate (PET) or fiber reinforced resins such as glass fiber reinforced resin (GFRP) and carbon fiber reinforced resin (CFRP). Further, as the base resin (base material) of the fiber-reinforced resin, a conventionally known resin can be used.

Next, the installation of the pipe joint 10 toward the floor panel 44 will be described.

First, the front end of the pipe body 40 under the floor is taken out from the floor hole 44H toward the ground. The floor hole 44H is formed in advance at a required position, and the diameter of the floor hole 44H is larger than the maximum outer diameter of the cap 18 of the pipe joint 10 (the maximum diameter of the pipe joint 10 except the flange portion 50), and It is smaller than the outer diameter of the flange portion 50.

Next, the tubular body 40 is connected to the pipe joint 10. When the front end of the tubular body 40 is inserted into the insertion hole 20 of the pipe joint 10, the front end of the tubular body 40 expands the lock ring 30. Then, the outer peripheral surface of the pipe body 40 slides the claw portion 36 of the lock ring 30 while inserting the pipe body 40 toward the inner side, and the inner circumferential surface of the pipe body 40 comes into contact with the waterproof ring 24. When the tubular body 40 is further inserted, the front end of the tubular body 40 reaches the wall surface 13 of the main body portion 12.

In the mounted state shown in Fig. 5, when the tubular body 40 has an internal pressure, the tubular body 40 is subjected to a force in a direction in which it is detached from the joint main body 16. Thereby, the tubular body 40 and the lock ring 30 are moved in a direction in which the insertion hole 20 is detached, so that the outer peripheral side of the ring portion 31 of the lock ring 30 comes into contact with the tapered surface 18A of the cap body 18. Thereby, as shown in FIG. 5, the claw portion 36 of the lock ring 30 is fitted into the outer peripheral side of the pipe body 40. At this time, since the claw portion 36 of the lock ring 30 is inclined toward the inner side of the insertion hole 20, it is easy to be fitted into the pipe body 40, and the claw portion 36 is directed in the opposite direction to the direction in which the pipe body 40 is pulled out. The tube body 40 is made difficult to be pulled out.

Next, the pipe body 40 is moved back from the floor hole 44H to the ground, and the main body portion 12 of the pipe joint 10 to which the pipe body 40 is connected is inserted into the floor hole 44H, and the first plate surface 50A of the flange portion 50 is carried. Placed on the ground 44A. Then, the stopper 46 is inserted into the hole portion 52A of the through hole 52, and the lower surface (conical surface) of the screw head portion 46A is brought into contact with the tapered portion 52B, and the screw portion 46B is screwed to the floor panel 44. Thereby, the flange portion 50 is attached to the floor surface 44A. That is, the pipe joint 10 is mounted to the floor panel 44 (an example of an object to be mounted).

Next, one end of the pipe body 60 in which the male screw 60A is formed is screwed to the female screw 12B of the pipe joint 10, and the pipe joint 10 is connected to the pipe body 60. Thereby, the tubular body 60 and the tubular body 40 are connected through the pipe joint 10. Further, the other end portion of the pipe body 60 is connected to, for example, a water appliance or the like.

In the pipe joint 10 of the present embodiment, when the flange portion 50 is attached to the floor panel 44, excessive force is applied to the joint main body 16, and the stress is not concentrated on the joint main body 16 (main body portion 12) and the convex portion. The boundary of the edge portion 50 is the first groove portion 54 and the second groove portion 56 of the flange portion 50 (that is, the thin portion of the flange portion 50). Then, when at least one groove portion of the first groove portion 54 and the second groove portion 56 is cracked due to stress concentration, the crack may be in the thickness direction of the flange portion 50 (in the present embodiment, the first groove portion) One of the portions 54 and one of the second groove portions 56 overlap in the thickness direction, and since the overlapping portion is thin, the crack easily advances in the thickness direction and advances in the groove extending direction. Therefore, the cracks are surely prevented from advancing toward the joint main body 16 and passing through the joint main body 16 to reach the flow passage 11, and water leakage from the joint main body 16 does not occur. In other words, when excessive force is applied to the joint main body 16 of the pipe joint 10, cracks such as cracks are generated by using at least one groove portion of the first groove portion 54 and the second groove portion 56 as a starting point, thereby avoiding cracking. Arriving to the joint body 16 results in water leakage resistance. Further, since the first groove portion 54 and the second groove portion 56 surround the flow path 11 in the axial direction of the joint main body 16, the force can be ensured to the joint main body 16 regardless of the direction in which the joint body 16 is excessively applied. Water leakage performance.

According to the above, the first groove portion 54 can be formed by the pipe joint 10, for example, by substantially thickening the thickness of the boundary portion between the joint main body 16 and the flange portion 50, or by using a special high-strength resin or the like. In the structure in which the second groove portion 56 suppresses the cost of the flange portion 50, it is possible to obtain an effect of ensuring the water leakage resistance even if the force is excessively applied.

In the pipe joint 10, the groove wall surface 54A in which the first groove portion 54 is curved in an arc shape is smoothly continuous with the curved portion of the outer peripheral surface 12S of the joint main body 16, thereby relaxing the stress. The groove wall surface 54A of the first groove portion 54 in the radially inner side (the flow path 11 side) is concentrated on the boundary between the groove wall surface 54A and the curved portion of the outer circumferential surface 12S. Thereby, it is possible to suppress the occurrence of cracks using the groove wall surface 54A or the above-described boundary as a starting point. That is, the advancement of the crack from the joint main body 16 toward the flow path 11 can be more reliably prevented.

Further, as shown in FIG. 6, when the pipe body 60 is to be tilted by the biasing force (external force) in the direction of the arrow F, the pipe body 60 is excessively applied and the force is applied to the joint main body 16 so that the tensile stress concentrates on In the flange portion 50, the tubular body 60 of the first groove portion 54 is on the side where the tubular body 60 is tilted, and the compressive stress is concentrated on the portion on the opposite side. On the other hand, the compressive stress concentrates on the portion where the flange portion 50 is located on the dump side of the tubular body 60 of the second groove portion 56, and the tensile stress concentrates on the portion on the opposite side of the position. Then, since the joint main body 16 and the flange portion 50 are formed of a resin material, the crack is generated from the portion where the tensile stress is concentrated (in FIG. 6, the crack K is shown as an example). In other words, by forming the first groove portion 54 on the first plate surface 50A of the flange portion 50 and forming the second groove portion 56 on the second plate surface 50B, the crack portion (damage portion) of the flange portion 50 is formed. Become easy to control.

In the first embodiment, the first groove portion 54 is formed on the first plate surface 50A, and the second groove portion 56 is formed on the second plate surface 50B. However, the present invention is not limited to this configuration, and only the first groove portion 54 may be formed. The configuration of the first plate surface 50A (that is, the configuration in which the second groove portion 56 is not formed on the second plate surface 50B) may be such that only the second groove portion 56 is formed on the second plate surface 50B (that is, the formation is not formed). The first groove portion 54 is formed on the first plate surface 54A). In this case, it is also possible to ensure the water leakage resistance of the joint main body 16 which is excessively applied to the joint of the pipe joint 10.

In the first embodiment, the first groove portion 54 is formed on the first plate surface 50A. However, the present invention is not limited to this configuration, and the first plate surface 50A may be formed so as to surround the flow path 11 in the first plate surface 50A. The recess 72 (another example of the recess formed in the first surface of the present invention) is substituted for the first groove portion 54 (see FIG. 7). Further, instead of the second groove portion 56, a plurality of second recesses (not shown) may be formed on the second plate surface 50B so as to surround the flow path 11. Further, the first concave portion 72 may be formed on the first plate surface A and the second concave portion may be formed on the second plate surface 50B. In this case, it is also possible to ensure the water leakage resistance of the joint main body 16 which is excessively applied to the joint of the pipe joint.

Further, in the first embodiment, the groove wall surface 54A of the first groove portion 54 is smoothly continuous with the outer circumferential surface 12S of the joint main body 16, but the present invention is not limited to this configuration, and may be the first groove. The portion 54 is disposed at intervals with respect to the outer peripheral surface 12S, and the groove wall surface 54A and the outer peripheral surface 12S are not smoothly continuous. In other words, the first groove portion 54 may be formed at any position as long as it is closer to the root portion than the outer edge 50C side of the flange portion 50. Similarly, the second groove portion 56 may be formed at any position as long as it is closer to the root side than the outer edge 50C side of the flange portion 50. Further, the first groove portion 54 and the second groove portion 56 are viewed from the axial direction of the joint main body 16, and may not overlap the thickness direction of the flange portion 50.

Further, in the first plate surface 50A, other grooves or recesses may be formed in addition to the first groove portion 54, and other grooves or recesses may be formed in the second plate surface 50B in addition to the second groove portion 56.

Further, the groove bottom portion 54B of the first groove portion 54 and the groove bottom portion of the second groove portion 56 may be connected by a hole.

In the first embodiment, the pipe joint 10 is attached to the floor panel 44. However, the present invention is not limited to this configuration, and the pipe joint 10 may be attached to a ceiling, a wall, or the like as long as the flange portion 50 can be attached.

Further, in the first embodiment, the joint main body 16 is formed in a straight cylindrical shape. However, the present invention is not limited to this configuration, and the joint main body 16 may be formed in a tubular shape (so-called elbow joint) which is bent in the middle. For other shapes.

Further, in the first embodiment, the flange portion 50 protrudes outward in the radial direction from the outer periphery of one end of the joint main body 16, but the present invention is not limited to this configuration, and the flange portion 50 may be from the intermediate portion of the joint main body 16. The outer circumference protrudes radially outward.

The embodiments of the present invention have been described above by way of examples, and the embodiments are intended to be Further, it is needless to say that the scope of the present invention is not limited to the embodiments.

10‧‧‧ pipe joint

11‧‧‧ flow path

12‧‧‧ Body Department

12A‧‧‧ surrounding ditch

12B‧‧‧ female thread

12S‧‧‧ outer perimeter

13‧‧‧ wall

14‧‧‧Intermediate

14A‧‧‧ front end

16‧‧‧Connector body

18‧‧‧Cap

18B‧‧‧Little Trails Department

20‧‧‧Insert hole

22‧‧‧ release ring

22A‧‧‧Protruding

22B‧‧‧ front end

24‧‧‧Waterproof ring

30‧‧‧Lock ring

31‧‧‧ Ring Department

36‧‧‧ claws

40, 60‧‧‧ body

44‧‧‧floor

44A‧‧‧ Ground

44H‧‧‧ floor hole

46‧‧‧stopper

46A‧‧‧ screw head

46B‧‧‧Spiral Department

50‧‧‧Flange

50A‧‧‧1st board

50B‧‧‧2nd board

50C‧‧‧ outer edge

52‧‧‧through holes

52A‧‧‧ Hole Department

52B‧‧‧Cone

54‧‧‧1st ditch

54A‧‧‧Ditch wall

54B‧‧‧dump bottom

56‧‧‧2nd ditch

60A‧‧‧ male thread

Claims (3)

A pipe joint having a joint body made of a resin and having a tubular shape, and a pipe body is respectively connected at both ends, and a flow passage is formed inside; a plate-shaped flange portion is integrally formed with the joint body, and The object to be attached is protruded from the outer periphery of the joint main body, and the concave portion is formed on the first surface of the flange portion on the side where the mounting object meets and the opposite side to the first surface At least one side of the second surface is disposed on the root side of the flange portion, and the flow path is surrounded by the axial direction of the joint body. The pipe joint of claim 1, wherein the recess is an annular groove having the flow path as a center in the axial direction of the joint body. The pipe joint according to claim 1 or 2, wherein the first surface is formed with the concave portion having a concave wall surface which is smoothly continuous with the outer circumferential surface of the joint main body and curved into an arc shape.