JP2013245693A - Header member and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure flexibility of a piping part and rigidity of a pipe body support member without using a special component.SOLUTION: A header member 10 has a piping part 20 which is formed of a resin material and composes a main piping 102 of a coupling type header 100, and the tubular pipe body support member 32 which composes a part of a branch pipe 30 diverging from the piping part 20 and is formed of a resin material harder than the piping part 20 and simultaneously is integrally formed with the piping part 20 by insert molding and supports a resin pipe 104 from inside by being inserted into the resin pipe 104 connected to the branch pipe 30 and on which an O-ring 48 stopping water between an outer peripheral part and the resin pipe 104 by coming into close contact with inner peripheral surface of the resin pipe 104 is disposed on an outer peripheral part.

Description

  The present invention relates to a header member and a method for manufacturing the header member.

  In recent years, a header construction method using a header is often used for piping in a house or the like. As a header for piping, there is known a connection type header configured by connecting a plurality of resin header members each having a piping portion and a branch pipe branched from the piping portion.

In the connection type header, a portion serving as a main pipe is configured by connecting pipe portions of a plurality of header members. Since the main pipe (a structure in which a plurality of pipes are connected) may be subjected to a force such as bending, flexibility is required.
On the other hand, in the case where the branch pipe is provided with a pipe connecting portion having an inner surface sealing structure, the pipe support is inserted into the pipe to be connected to support the pipe from the inside and a water stop member is disposed on the outer peripheral portion. It is required to increase the rigidity of the portion (a part of the branch pipe).

  However, in the conventional header member, the pipe portion and the tube body support member are integrally formed of the same resin material. For this reason, it has been difficult to ensure both the flexibility of the piping portion and the rigidity of the tube support portion.

On the other hand, Patent Literature 1 discloses a joint for converting a seal structure that can convert a pipe seal structure (convert to an inner seal structure) by connecting to a pipe body connection portion of an outer seal structure of a branch pipe of a header member. Yes. When such a joint is used, even if the pipe part and the pipe body support part of the header member are formed of the same resin material, the pipe body support part of the joint to be a part to which the pipe body is connected is used as the header member. Therefore, the above-mentioned problems can be solved.
However, since a dedicated component called a seal structure conversion joint is used, the cost increases, and further, there arises a problem that the work of connecting the seal structure conversion joint to the tube connecting portion of the outer surface seal structure of the branch pipe increases.

JP 2007-51699 A

  An object of this invention is to ensure the softness | flexibility of a piping part and the rigidity of a pipe body support part, without using an exclusive component.

  The header member according to claim 1 is formed of a resin material, and constitutes a pipe part constituting the main pipe of the connection type header and a part of the branch pipe branched from the pipe part, and is harder than the pipe part. And is formed integrally with the pipe part by insert molding, inserted into a pipe body connected to the branch pipe, and supports the pipe body from the inside, and an inner periphery of the pipe body is provided on the outer peripheral part. And a tubular tube support member in which a water stop member that is in close contact with the surface and stops water between the outer peripheral portion and the tube body is disposed.

In the header member according to the first aspect, since the tube body support member is formed of a resin material harder than the pipe portion, the rigidity of the tube body support member is higher than that of the pipe portion. In other words, the rigidity of the pipe part is lower than that of the pipe body support member (the flexibility of the pipe part is increased).
In other words, the header member is made of a resin material that is harder than the piping part, thereby ensuring the flexibility of the piping part and the rigidity of the pipe supporting member (tube supporting part). can do.

Here, securing the rigidity of the tube support member makes it difficult for the tube support member to be deformed (bending deformation, etc.), so the interval between the inner peripheral surface of the tube and the outer periphery of the tube support member is maintained, The water stop performance between the pipe body and the pipe body support member by the water stop member is ensured.
On the other hand, if the flexibility of the pipe portion is ensured, the flexibility of the main pipe of the connection type header is improved, and it is possible to suppress an excessive bending stress from acting on the main pipe.

  Further, since the header member is formed by integrally forming the pipe portion and the tube support member formed of different resin materials as described above by insert molding, different resin materials are used by using dedicated parts or the like. There is no need to connect. For this reason, the header member can reduce the cost of the dedicated component and the work for attaching the dedicated component, for example, as compared with the header member using the dedicated component.

  As described above, according to the header member of the first aspect, the flexibility of the piping portion and the rigidity of the tube support portion can be ensured without using a dedicated component.

  The header member according to claim 2 is the header member according to claim 1, wherein the tubular body support member includes a restricting unit that restricts a change in mutual position with the pipe portion at a joint portion with the pipe portion. Have.

  In the header member according to claim 2, since the tube body support member has a limiting unit that restricts a change in mutual position with the pipe portion at a joint portion with the pipe portion, the tube body support member is a pipe. It is prevented from coming out of the part.

  The header member according to claim 3 is the header member according to claim 2, wherein the limiting means is an overhanging portion that protrudes to an outer peripheral side formed at a joint portion of the pipe support member with the pipe portion. And the front end side of the said tube body supporting member of the said overhang | projection part is covered with a part of said piping part.

  In the header member according to claim 3, an overhanging portion that protrudes to the outer peripheral side is formed at a joint portion with the pipe portion of the tube support member, and the distal end side of the tube support member of the overhang portion is connected to the pipe portion. Since it covers by a part, it is prevented by a part of piping part which covers a protruding part and the front end side of this protruding part that a pipe body supporting member slips out from a piping part.

  The header member according to claim 4 is the header member according to any one of claims 1 to 3, wherein the pipe portion has a cylindrical connection port portion formed on an outer periphery thereof, and the tubular body support member is The base side is joined to the inner peripheral surface of the connection port portion.

  In the header member according to claim 4, since the base side of the tube body support member is joined to the inner peripheral surface of the connection port portion formed in the piping portion, for example, a bending force acts on the tube body support member. Even so, the base side of the tube body support member is supported by the connection port portion, and the joined state between the pipe portion and the tube body support member is maintained.

  The header member according to claim 5 is a tubular member according to claim 4, wherein the header member is disposed on an outer peripheral surface of the connection port portion and maintains a joined state of the tube support member and the connection port portion. Holding member.

  In the header member according to claim 5, since the cylindrical holding member is disposed on the outer peripheral surface of the connection port portion, the holding state between the pipe portion and the tube body support member is effectively held. The

  The header member according to claim 6 is the header member according to any one of claims 1 to 5, wherein the pipe portion is formed of a resin material of any one of PB resin, non-reinforced PPS resin, and PEX resin. The tube support member is made of any resin material of PPS resin, PPA resin, PEEK resin, PPSU resin, and PSU resin.

  In the header member according to claim 6, the pipe portion is formed of any one of PB resin, non-reinforced PPS resin, and PEX resin, and the tube support member is PPS resin, PPA resin, PEEK resin, PPSU resin, and Since it forms with either resin material of PSU resin, the rigidity of a pipe body supporting member can be improved, improving the softness | flexibility of a piping part.

  The method for manufacturing a header member according to claim 7 is the method for manufacturing the header member according to claim 1, wherein the tubular body support member is formed using a resin material, and the piping portion is formed. The pipe body support member is disposed in a cavity of a mold, and a resin material softer than a resin material forming the pipe body support member is filled in the cavity, and the pipe portion and the pipe body support member The piping part is molded while integrating the components.

  In the manufacturing method of the header member according to claim 7, the header member according to claim 1 can be manufactured, which ensures the flexibility of the piping portion and the rigidity of the tube support member without using a dedicated component.

According to the header member of the present invention, the flexibility of the piping part and the rigidity of the tube body supporting member can be ensured without using dedicated components.
According to the method for manufacturing a header member of the present invention, it is possible to manufacture a header member that can ensure the flexibility of the piping portion and the rigidity of the tube support member without using a dedicated component.

It is a sectional side view of the header member of a 1st embodiment. It is a sectional side view of the connection type header which connected two or more header members of a 1st embodiment. It is a sectional side view of the piping part and metal mold | die for demonstrating the shaping | molding method of the piping part of the header member of 1st Embodiment. It is a sectional side view of a piping part and a pipe body supporting member for explaining an assembly procedure for attaching various members to a pipe part and a pipe body supporting member and assembling a header member. It is a sectional side view of the header member of a 2nd embodiment. It is a sectional side view of the piping part and metal mold | die for demonstrating the shaping | molding method of the piping part of the header member of 2nd Embodiment. It is a sectional side view of the header member of a 3rd embodiment. It is a sectional side view for demonstrating the mounting method of the holding member of the header member of 3rd Embodiment.

  Hereinafter, the manufacturing method of the header member and header member concerning the embodiment of the present invention is explained.

(First embodiment)
FIG. 1 shows a side sectional view of a header member 10 according to the first embodiment of the present invention, and FIG. 2 shows a side sectional view of a connection type header 100 in which a plurality of header members 10 are connected.
As shown in FIGS. 1 and 2, the header member 10 is configured to include a pipe part 20 that constitutes the main pipe 102 of the connection type header 100 and a branch pipe 30 that branches from the pipe part 20.

  The piping part 20 is formed of a resin material in a cylindrical shape (in this embodiment, a substantially cylindrical shape). In addition, the code | symbol X (one-dot chain line) shown in FIG. 1, FIG. 2 has shown the central axis of the piping part 20. As shown in FIG. Further, the central axis of the main pipe 102 constituted by the plurality of pipe parts 20 is coincident with the central axis X of the pipe part 20.

  The piping portion 20 has an inner diameter on the one end portion in the axial direction (right end portion in FIGS. 1 and 2) 20A side and an outer diameter on the other end portion in the axial direction (left end portion in FIGS. 1 and 2) 20B side. Is bigger than. That is, the one end portion 20A side of the internal space 21 of the piping portion 20 is sized so that the other end portion 20B of the piping portion 20 of the other header member 10 can be inserted (see FIG. 2). In addition, the internal space corresponding to the area | region which can insert the other end part 20B of the piping part 20 of the other header member 10 among the internal spaces 21 of the piping part 20 is shown as internal space 21A.

  In the inner space 21A of the pipe part 20, the pipe part 20 is in close contact with the outer peripheral surface on the other end part 20B side of the adjacent pipe part 20, and the inner peripheral surface of the pipe part 20 and the outer peripheral surface of the adjacent pipe part 20 are An annular O-ring 22 is disposed as a water-stop member that stops water between them.

  An annular collet 24 supported by an annular support ring 23 is disposed in the inner space 21 </ b> A of the piping portion 20 on the insertion port side of the O-ring 22. The collet 24 is arranged on the inner side in the radial direction of the support ring 23, and movement to the O-ring 22 side is restricted by the support ring 23.

  On the inner peripheral surface of the collet 24, a plurality of claw portions 24A projecting radially inward are formed. This claw portion 24A is for biting into the outer peripheral surface on the other end 20B side of the inserted adjacent piping portion 20 to prevent the adjacent piping portion 20 from coming off.

  A cylindrical cap 25 is detachably attached to the outer periphery of the pipe portion 20 on the one end portion 20A side. A part of the cap 25 projects radially inward to prevent the collet 24 from coming off. Further, when the collet 24 comes into contact with the protruding portion of the cap 25, the collet 24 is reduced in diameter and further bites into the outer peripheral surface on the other end 20B side of the adjacent pipe portion 20 in which the claw portion 24A is inserted. It is like that. Although not shown, the collet 24 has one or more slits (slits extending in the axial direction) for reducing the diameter of the collet 24.

  As described above, the adjacent pipe parts 20 are connected to each other by inserting the other end part 20B of the other adjacent pipe part 20 into the internal space 21A of the pipe part 20 of one header member 10. Thus, the main piping 102 of the connection type header 100 is comprised by connecting the piping parts 20 of the some header member 10 mutually.

Hereinafter, a portion for inserting and connecting the other end portion 20B of the adjacent piping portion 20 configured on the one end portion 20A side of the piping portion 20 is referred to as a tubular body connecting portion 26.
In addition, the tube connecting portion 26 is configured to keep the O-ring 22 in close contact with the outer peripheral surface on the other end portion 20B side of the inserted adjacent piping portion 20 to stop water between the piping portion 20 and the adjacent piping portion 20. It is the connection part using the structure to be called, what is called an outer surface seal structure.

  As shown in FIGS. 1 and 2, the branch pipe 30 extends in a direction intersecting the central axis X of the pipe portion 20 (a direction orthogonal in the present embodiment). Further, the branch pipe 30 includes a tubular tubular body support member 32 and an outer tubular member 34 disposed with a gap in which the resin pipe 104 is inserted on the radially outer side of the tubular body support member 32. It is configured. In addition, the code | symbol Y (dashed-dotted line) shown in FIG. 1, FIG. 2 has shown the central axis of the branch pipe 30 (The pipe body support member 32 and the outer cylinder member 34).

  The tube body support member 32 is formed of a resin material that is harder than the resin material that forms the pipe portion 20. The tube support member 32 is integrally formed with the pipe portion 20 by insert molding.

The joint part of the piping part 20 and the pipe body support member 32 is demonstrated concretely.
As shown in FIG. 1, a cylindrical connection port portion 28 that protrudes radially outward is formed on the outer peripheral portion of the piping portion 20, and the tube body support member 32 is formed inside the connection port portion 28. One end 32A side (root side) in the axial direction is disposed and joined (closely joined) to the inner peripheral surface 28A.
In addition, a flange portion 36 that projects in an annular shape outwardly in the radial direction is formed at the axial intermediate portion of the tube support member 32, and one surface (lower surface in FIG. 1) 36A of this flange portion 36 is formed. It contacts the front end surface 28B of the connection port portion 28.

In addition, the tubular body support member 32 is formed with an overhanging portion 38 projecting to the outer peripheral side at a joint portion with the pipe portion 20, here, a joint portion with the inner peripheral surface 28 </ b> A of the connection port portion 28. In the present embodiment, a plurality (two) of the overhang portions 38 are formed at intervals in the axial direction of the tube body support member 32. Note that the overhanging portion 38 changes in the mutual position of the pipe portion 20 and the pipe body support member 32 at the joint portion between the pipe body support member 32 and the pipe portion 20 (specifically, the mutual position in the central axis Y direction). It is an example of a limiting means for limiting (change).
On the other hand, the distal end side of the tube body support member 32 of the overhang portion 38 (on the other end portion 32B side in the axial direction of the tube body support member 32) is covered with a part of the connection port portion 28 (specifically, The tube body support member 32 is covered when viewed from the front end (the other end portion 32B) side).
Specifically, as shown in FIG. 1, a part of the connection port portion 28 enters between the adjacent overhang portions 38 and between the flange portion 36 and the overhang portion 38 adjacent thereto without a gap. Thus, the distal end side of the tube body support member 32 of the overhang portion 38 is covered with a part of the connection port portion 28. With this configuration, the boundary surface (joint surface) between the tube body support member 32 and the connection port portion 28 is bent unevenly with respect to the axial direction of the tube body support member 32.

  The overhanging portion 38 preferably has both axial surfaces along a direction perpendicular to the central axis Y.

  Further, as shown in FIG. 1, a recess 40 that is recessed inward in the radial direction is formed on the distal end (other end portion 32 </ b> B) side of the flange portion 36 of the tube body support member 32. An overhang portion 42 that protrudes inward in the radial direction and is formed on the end portion 34 </ b> A side in the axial direction of the outer cylinder member 34 is fitted in the recess portion 40. By this fitting, the tube body support member 32 and the outer cylinder member 34 are integrally joined.

  Further, the distal end (the other end portion 32B) of the tubular body support member 32 extends in the axial direction from the distal end (the other end portion 34B in the axial direction) of the outer cylinder member 34.

  As described above, a resin tube 104 (for example, a resin tube connected to a watering device such as a washing machine or a bathtub) is provided between the tube support member 32 and the outer cylinder member 34 as an example of a tube. An annular insertion space 44 to be inserted is formed. By inserting the resin tube 104 into the insertion space 44, the tube support member 32 is inserted into the resin tube 104 to support the resin tube 104 from the inside.

  A circumferential groove 46 that makes one round in the circumferential direction is formed on the outer peripheral portion of the tubular body support member 32 on the other end portion 32 </ b> B side with respect to the recessed portion 40. An annular O-ring 48 as an example of a water stop member is fitted in the circumferential groove 46. In the present embodiment, a plurality (two) of circumferential grooves 46 are formed in the outer peripheral portion of the tube support member 32 at intervals in the axial direction, and O-rings 48 are fitted into the respective circumferential grooves 46. ing.

  An annular pipe holding ring 50 having a V-shaped cross section is disposed at the tip (the other end 34B) of the outer cylinder member 34. The pipe holding ring 50 is formed with a claw portion 50 </ b> A (an inner peripheral side end portion of the pipe holding ring 50) that bites into the outer peripheral surface of the resin pipe 104 inserted into the insertion space 44.

  A cylindrical cap 52 is detachably mounted on the outer periphery of the outer cylinder member 34 on the other end 34B side. A part of the cap 52 projects radially inward to prevent the pipe holding ring 50 and a release ring 54 described later from coming out.

  A release ring 54 is inserted inside the cap 52 closer to the insertion port than the pipe holding ring 50. The release ring 54 is for removing the claw portion 50 </ b> A biting into the resin tube 104 from the resin tube 104.

  Here, when the resin tube 104 is inserted into the insertion space 44, the claw portion 50 </ b> A of the pipe holding ring 50 is caught on the outer peripheral surface of the resin tube 104 and the resin tube 104 is prevented from coming off. The O-ring 48 stops (seals) the space between the inner peripheral surface of the resin tube 104 and the outer peripheral surface of the tube body support member 32.

  On the other hand, when the release ring 54 is pushed in using a dedicated jig (not shown), the tapered portion of the release ring 54 slides on the inclined surface on the inner peripheral side (radially inner side) of the pipe holding ring 50, The inner diameter of the holding ring 50 is enlarged, and the hook with the resin tube 104 is released, so that the resin tube 104 can be pulled out.

Hereinafter, a portion for connecting the resin pipe 104 formed on the distal end side of the branch pipe 30 will be referred to as a tube connecting portion 56.
In addition, the tube connecting portion 56 closes the O-ring 48 to the inner peripheral surface of the inserted resin tube 104 to stop water between the resin tube 104 and the branch tube 30 (tube support member 32). This is a connection part of a so-called inner surface seal structure.

Moreover, it is preferable that the piping part 20 is formed with any resin material of PB (polybutene) resin, non-reinforced PPS resin, and PEX (crosslinked polyethylene) resin, and the tube support member 32 is PPS (polyphenylene sulfide). It is preferably formed of any resin material such as resin, PPA (polyphthalamide) resin, PEEK (polyetheretherketone) resin, PPSU (polyphenylsulfone) resin, and PSU (polysulfone) resin.
In the present invention, if the resin material forming the tube body support member 32 is harder than the resin material forming the pipe portion 20, the pipe portion 20 and the tube body support member 32 are made of a resin other than the above. You may form with a material.

Next, a method for manufacturing the header member 10 will be described.
First, the metal mold | die 60 for injection-molding the piping part 20 of the header member 10 is demonstrated. As shown in FIG. 3, the mold 60 has a recess for forming one side of the pipe part 20 divided into two on a plane where the central axis X of the pipe part 20 and the central axis Y of the branch pipe 30 intersect. A first mold 62 formed and a second mold formed with a recess for forming the other side of the two parts (not shown in FIG. 3 because it is the front side of the pipe portion 20 on the drawing). The third mold 64 that forms from one end 20A of the internal space 21 of the piping part 20 to a predetermined position in the central axis X direction, and the predetermined in the central axis X direction from the other end 20B of the internal space 21 of the piping part 20 And a fourth mold 66 for forming the position.
The predetermined position in the central axis X direction of the present embodiment is a position on the other end 20B side (left side in FIG. 3) with respect to the central axis Y, and more specifically, the outer peripheral end of the overhanging portion 38. (The left end in FIG. 3). The predetermined position in the central axis X direction is not limited to the above position.

  A positioning recess 62 </ b> A for fitting and positioning the tube support member 32 is formed at a site where the connection port portion 28 of the recess of the first mold 62 is formed. On the other hand, a positioning recess (not shown) is also formed in a portion of the second mold (not shown) facing the positioning recess 62A.

In addition, the mold 60 is inserted into the internal space 33 of the tube support member 32 that is positioned by being fitted into the positioning recess 62A of the first mold 62 and the positioning recess of the second mold 62, and the third mold 64 is inserted. And a fifth die 68 that abuts against the fourth die 66, respectively.
Note that the first mold 62 and the second mold 64 are movable in a direction orthogonal to the central axis X and the central axis Y. Specifically, in FIG. 3, it can be moved to the front side and the back side of the paper. The third mold 64 and the fourth mold 66 are movable along the central axis X, and the fifth mold 68 is movable along the central axis Y.

Hereinafter, the manufacturing method of the header member 10 is demonstrated.
First, the tube support member 32 is formed using a mold (not shown) for forming the tube support member 32.

  Next, as shown in FIG. 3, the tube support member 32 is fitted into the positioning recess 62A of the first mold 62, and the third mold 64, the fourth mold 66, and the fifth mold 68 are placed at predetermined positions. Move so that At the same time, the first mold 62 and the second mold are closed. Thereby, a cavity 61 having the same shape as that of the pipe part 20 is formed in the mold 60.

  Next, a molten resin material (resin material softer than the resin material forming the tube support member 32) is injected into the cavity 61 from the spout 69 extending to the cavity 61, and the resin material is injected into the cavity 61. Fill without gaps. Thereafter, the resin material is cooled and solidified.

  And the 1st-5th metal mold | die is evacuated and the header member 10 by which the piping part 20 and the pipe body support member 32 were integrally molded (insert molding) is taken out. The surplus resin formed in the shape of the spout 69 is cut off from the pipe portion 20 with a nipper or the like.

Next, as shown in FIG. 4, an O-ring 48 is fitted into the circumferential groove 46 of the tube body support member 32. Then, the projecting portion 42 of the outer cylinder member 34 is press-fitted into the recess portion 40 of the tube body support member 32 so that the projecting portion 42 of the outer tube member 34 is fitted into the recess portion 40 of the tube body support member 32. Next, the pipe holding ring 50 and the release ring 54 are disposed at the tip (the other end 34B) of the outer cylinder member 34, and the cap 52 is attached to the outer periphery of the outer cylinder member 34 so that they do not fall off.
In addition, an O-ring 22, a support ring 23, and a collet 24 are inserted into the internal space 21A of the pipe part 20, and a cap 25 is attached to the outer periphery of the tip part (the other end part 20B) of the pipe part 20 so as not to drop off. To do.
In this way, the header member 10 is manufactured.

  Note that the manufacturing order of the manufacturing method of the header member 10 may be changed.

Next, the effect of the header member 10 will be described.
In the header member 10, since the tube body support member 32 is formed of a resin material harder than the pipe portion 20, the rigidity of the tube body support member 32 is higher than that of the pipe portion 20. In other words, the rigidity of the pipe part 20 is lower than that of the pipe body support member 32 (the flexibility of the pipe part 20 is increased). That is, the header member 10 forms the tube support member 32 with a resin material harder than the pipe portion 20, thereby ensuring flexibility of the pipe portion 20 and rigidity of the tube support member (tube support portion) 32. Can be ensured.

Here, if the rigidity of the tube body support member 32 is ensured, the tube body support member 32 is less likely to be deformed (bending deformation or the like), so the distance between the inner peripheral surface of the resin tube 104 and the outer periphery of the tube body support member 32. Is maintained, and the water stop performance (seal performance) between the resin tube 104 and the tube body support member 32 by the O-ring 48 is ensured.
On the other hand, if the flexibility of the pipe portion 20 is ensured, the flexibility of the main pipe 102 of the connection type header 100 is improved, and it is possible to suppress an excessive bending stress from acting on the main pipe 102. As a result, the occurrence of problems such as bending of the main pipe 102 or bending of the main pipe 102 is effectively suppressed.

  Further, since the header member 10 is formed by integrally forming the pipe portion 20 and the tube body support member 32 formed of different resin materials by insert molding, it is necessary to connect different resin materials using dedicated parts or the like. There is no. For this reason, the header member 10 can reduce the cost of an exclusive component and the operation | work for attaching an exclusive component compared with what uses an exclusive component, for example.

  From the above, according to the header member 10, the flexibility of the piping part 20 and the rigidity of the tube support member 32 can be ensured without using dedicated components.

Further, in the header member 10, an overhang portion 38 is formed at a joint portion of the tube body support member 32 with the pipe portion 20, and the distal end side of the tube body support member 32 of the overhang portion 38 is connected to the pipe portion 20. Therefore, the tube body support member 32 is prevented from coming out of the pipe part 20 by the engagement between the overhang part 38 and a part of the pipe part 20 covering the distal end side of the overhang part 38. In other words, the change in the mutual position between the tubular body support member 32 and the piping portion 20 is limited (prevented) by the engagement between the protruding portion 38 and a part of the piping portion 20 that covers the distal end side of the protruding portion 38. .
In particular, in the present embodiment, a part (convex portion) of the connection port portion 28 enters between the protruding portions 38 adjacent to each other and between the flange portion 36 and the protruding portion 38 adjacent thereto without a gap. Since it is joined, it is effectively prevented that the pipe support member 32 comes out of the pipe part 20.

  In addition, since the base side of the tube body support member 32 is joined to the inner peripheral surface 28A of the connection port portion 28 of the pipe section 20, even if a bending force acts on the tube body support member 32, the tube body support member The base (one end portion 32 </ b> A) side of 32 is supported by the connection port portion 28, and the joined state between the pipe portion 20 and the tube body support member 32 is maintained.

  Furthermore, the pipe part 20 is formed of any one of PB resin, non-reinforced PPS resin, and PEX resin, and the tube support member 32 is any of PPS resin, PPA resin, PEEK resin, PPSU resin, and PSU resin. Since the resin material is used, the rigidity of the pipe support member 32 can be improved while improving the flexibility of the pipe portion 20.

  In the present embodiment, the overhanging portion 38 is formed at the one end portion 32A of the tube support member 32 as an example of the restricting means, but the present invention is not limited to this configuration, and the tube support member as an example of the restricting means. The outer peripheral surface of one end portion 32A of 32 may be knurled to form irregularities.

(Second Embodiment)
Next, the header member and the header member manufacturing method according to the second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 5, the header member 70 of the present embodiment has the same configuration as the header member 10 of the first embodiment except for a configuration in which a holding member 72 is wound around the outer peripheral surface of the connection port portion 28. For this reason, below, the structure of the holding member 72 is demonstrated.

As shown in FIG. 5, the holding member 72 of the present embodiment is formed by forming a metal material into a cylindrical shape, and is disposed on the outer peripheral surface of the connection port portion 28 so as to surround the outer peripheral surface. Since the joint portion between the tube body support member 32 and the connection port portion 28 is reinforced by the holding member 72, the joint state between the tube body support member 32 and the connection port portion 28 is effectively retained.
In the present embodiment, one end portion side of the holding member 72 also surrounds the outer peripheral surface of the flange portion 36 of the tubular body support member 32.

  As shown in FIG. 6, when manufacturing the piping portion 20 of the header member 70, the tubular body support in which the outer peripheral surface of the flange portion 36 is surrounded by the holding member 72 in the positioning recess 62 </ b> A of the first mold 62. The member 32 is fitted, and then the molten resin material is injected into the cavity 61 of the mold 60 to form the pipe portion 20. Thereby, the piping part 20, the pipe body support member 32, and the holding member 72 are integrally molded.

Next, the effect of the header member 70 of 2nd Embodiment is demonstrated.
In addition, about the effect similar to 1st Embodiment among the effects of this embodiment, the description is abbreviate | omitted suitably.

In the header member 70, since the holding member 72 is disposed on the outer peripheral surface of the connection port portion 28, the joined state between the pipe portion 20 and the tube body support member 32 can be effectively held.
In particular, since the holding member 72 is disposed together with the tube support member 32 in the cavity 61 at the time of manufacture, the pipe portion 20 and the holding member 72 are integrally formed. The bonding state of the is more reinforced.

  In the header member 70 of the second embodiment, the holding member 72 is disposed together with the tube support member 32 in the cavity 61 of the mold 60, so that the pipe portion 20 and the tube support member 32 are added. The holding member 72 is integrally formed, but the present invention is not limited to this configuration. For example, as in the header member 80 of the third embodiment shown in FIGS. After the member 32 is integrally molded (insert molding), the holding member 82 formed of a metal material in a cylindrical shape may be disposed on the outer peripheral surface of the connection port portion 28. In addition, it is preferable that the holding member 82 has a sufficient width for improving the bonding property between the connection port portion 28 and the tube body support member 32.

  The embodiments of the present invention have been described above with reference to the embodiments. However, these embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to these embodiments.

DESCRIPTION OF SYMBOLS 10 Header member 20 Piping part 30 Branch pipe 32 Tubular support member 32A One end part (root)
32B The other end (tip)
38 Overhang 48 O-ring (water-stop member)
60 Mold 61 Cavity 70 Header member 72 Holding member 80 Header member 82 Holding member 100 Connection type header 102 Main piping 104 Resin pipe (tube body)
X Center axis Y Center axis

Claims (7)

A pipe part formed of a resin material and constituting the main pipe of the connection type header;
A part of the branch pipe branched from the pipe part, formed of a resin material harder than the pipe part, and integrally formed with the pipe part by insert molding, is connected to the branch pipe. A cylindrical shape in which a water-stopping member is inserted and supported from the inside, and a water-stopping member is disposed on the outer peripheral portion so as to be in close contact with the inner peripheral surface of the tubular body and stop water between the outer peripheral portion and the tubular body. A tube support member;
A header member.   The header member according to claim 1, wherein the tubular body support member includes a restricting unit that restricts a change in a mutual position with the pipe portion at a joint portion with the pipe portion. The restricting means is an overhanging portion that protrudes to the outer peripheral side formed in a joint portion with the pipe portion of the tubular body support member,
The header member according to claim 2, wherein a distal end side of the tubular body support member of the overhang portion is covered with a part of the piping portion. The pipe part is formed with a cylindrical connection port part on the outer periphery,
The header member according to any one of claims 1 to 3, wherein a base side of the tubular body support member is joined to an inner peripheral surface of the connection port portion.   The header member according to claim 4, further comprising a cylindrical holding member that is disposed on an outer peripheral surface of the connection port portion and holds a joined state of the tube support member and the connection port portion. The piping part is formed of any resin material of PB resin, non-reinforced PPS resin and PEX resin,
The header member according to any one of claims 1 to 5, wherein the tubular body support member is formed of any one of PPS resin, PPA resin, PEEK resin, PPSU resin, and PSU resin. It is a manufacturing method of the header member according to claim 1,
Forming the tube support member using a resin material;
The tube support member is disposed in a cavity of a mold for forming the pipe portion, and a resin material softer than a resin material forming the tube support member is filled in the cavity. A method for manufacturing a header member, wherein the pipe part is molded while integrating the pipe part and the pipe body support member.