JP4376583B2 - Rotating header - Google Patents

Description

  The present invention relates to a branch header used for water supply / hot water supply piping and the like, and relates to a rotary header in which the direction of a branch flow path branched from the flow path is rotatable.

The branch header is connected to the water supply / hot water supply pipe, the flow path from the main pipe is branched into one or more branch flow paths, and this branch flow path is connected to each terminal device such as a toilet, bathroom, kitchen, etc. It is what you do.
Of these, the rotating header is a branching header that can change the direction of the branch flow path by making each branch flow path independent. When the rotary headers are connected to each other, the branch flow path is connected to the joint portion of the rotary header. The angle of the branch flow path is arbitrarily set with respect to the joint portion by rotating with respect to the axis. When the rotating header is used in this way, the direction of each branch flow path can be changed, so that pipe connection with a higher degree of freedom is possible.

  In this rotary header, for example, when connecting cylinders that are joint parts, a claw that can be engaged is provided near the end of an adjacent cylinder, and by engaging this claw, the central axis direction of the header (For example, refer to Patent Document 1). This header is provided with a pair of claws at two opposing positions on the end of each cylinder, and when the cylinders are rotated relative to each other, the engaged state and the disengaged state by the claws are switched at intervals of 90 degrees. In other words, the adjacent cylinders are separated by rotating 90 degrees relative to each other.

In addition, there is a rotary header having a connection structure in which each header unit is rotatably fitted by interposing a retaining ring across a groove formed in each header unit (see, for example, Patent Document 2). ).
In addition, the male screw part provided in one block and the female screw part provided in the other block are screwed together, and when this screwing area is exceeded, both blocks become unplugged and the connected state of the blocks is maintained. There is a liquid branching block in which these are joined so as to be relatively rotatable (for example, see Patent Document 3).
JP 2002-372171 A Japanese Patent Laid-Open No. 11-148588 Japanese Patent Laid-Open No. 6-27279

  However, although the mounting structure in the header of Patent Document 1 can rotate each cylinder, the cylinder is separated by 90 degrees when the cylinder is rotated by 90 degrees. In order to prevent this natural decomposition, a plate for fixing each cylinder is separately required.

  In addition, the rotary header in Patent Document 2 newly requires a retaining ring, which causes an increase in cost. Furthermore, when assembling the rotary header, the insertion port on one end side of the headers must be inserted into the receiving port on the other end side while pressing the retaining ring, and this assembling operation is difficult. Further, since the insertion groove is provided across the outer peripheral surface of the insertion port and the inner peripheral surface of the receiving port in order to attach the retaining ring, there is a demerit that the appearance shape of the connection portion becomes large and unfavorable.

  The fluid branching block in Patent Document 3 does not need to use separate parts as in Patent Document 2, but the blocks connected by pipes are male threaded and female threaded for some reason (for example, insufficient screwing by the installer). If the threaded portion is screwed, and the reverse rotation in the screwing direction in this state, there is a possibility that both blocks may be separated and water leakage may occur.

The present invention was developed in view of the conventional problems, and an object of the present invention is to provide a rotating header that can reduce the number of parts and can reliably maintain a state in which they cannot be separated and are mutually rotatable. It is in.
Another object of the present invention is to provide a rotary header that is easy to assemble and that is compact and does not become unfriendly in design.

  In order to achieve the above-mentioned object, the invention according to claim 1 is a rotary header in which a branch header body is connected by a plurality of branch joint members, and a male screw portion is provided in an insertion portion of one joint member. A relief part for the female screw part is provided on the back side of the male screw part, and a female screw part and a relief part for the male screw part are provided on the back side of the female screw part at the receiving part of the other joint member. A rotating header that is provided so that the joint member can be freely rotated and the retaining member can be prevented from coming off by crimping the back side end of the male and female screw portions at a position beyond the screwing region where the receiving portion and the insertion portion are screwed together. It is.

  The invention described in claim 2 is a rotary header in which an O-ring is mounted in a mounting groove formed on an outer peripheral surface of an end portion of the insertion portion.

  According to a third aspect of the present invention, in the position beyond the screwing region where the receiving port portion and the insertion portion are screwed together, the screwing direction of the receiving port portion and the insertion portion is pressed in the opposite direction via the caulking jig. Then, the rotary header is configured such that the inner end of the male and female screw is caulked.

  According to a fourth aspect of the present invention, the caulking jig is a wedge-shaped jig having an inclined surface and a flat surface, and the jig is arranged on the flat surface of the end surface of the receiving port and the insertion portion side facing the flat surface. This is a rotary header that is inserted into a tapered surface.

  The invention according to claim 5 is a rotary header in which a mounting portion having an octagonal cross section is formed on the outer peripheral surface of the branch joint member.

  According to the first aspect of the present invention, the rotating header is capable of maintaining a mutually rotatable state while reliably preventing separation after connection without newly increasing the number of parts. Further, the assembly work is easy, and the size is small and the design is not unfavorable.

  According to the invention which concerns on Claim 2, at the time of connection of this rotation header, it is a rotation header which can be connected in the state which sealed the connection part reliably and prevented the leakage of the connection part.

  According to the invention which concerns on Claim 3, it is a rotation header which can make a joint member in the state which cannot be separated and can mutually rotate by simple process, and can perform these at low cost.

  According to the invention which concerns on Claim 4, it is a rotary header which can be caulked efficiently with a small force and can be connected easily and at low cost.

  According to the fifth aspect of the present invention, even when the branch flow path has a rotation angle of 90 degrees, 180 degrees, etc., it can be stably attached to a flat surface such as a wall surface or a floor surface, for example, on another floor. Even if there is an end device, not only can the flow path be configured easily, but it is also possible to cope with the necessity of setting the rotation angle of the branch flow path to 45 degrees. This is a rotary header that can smoothly set a branch flow path for a provided end device and provide a stable flow path.

An example of the rotary header of the present invention will be described based on the embodiment shown in FIGS.
FIG. 1 is a partially cutaway front view showing an embodiment of a rotary header of the present invention. In the drawing, 1, 2, and 3 are branch joint members, and the rotary header in this embodiment is configured by connecting a plurality of joint members 1, 2, and 3 to form a branch header body 4 in this way. Yes.

In the joint member 1 and the joint member 2, 1b is a cylindrical insertion part formed in the joint member 1 which is one joint member, and 7 is a male screw part formed on the outer peripheral surface side of the insertion part 1b. . An end portion which is an end portion on the opposite side to the screwing direction in the male screw portion 7 is notched perpendicularly to the radial direction of the insertion portion 1b, and is the most end portion side of the male screw portion 7. The male screw end portion 7a is formed into an incomplete fin shape with a thread. Reference numeral 8 denotes an escape portion for the female screw portion 12 of the joint member 2 provided on the further back side of the male screw portion 7.
11 is a cylindrical receiving part formed in the joint member 2 which is the other joint member, and the insertion part 1b of the joint member 1 is provided so as to be able to be screwed in. A female screw is formed on the inner peripheral surface side of the receiving part 11. Part 12 is formed. An end portion, which is an end portion on the opposite side to the screwing direction in the female screw portion 12, is cut out perpendicular to the radial direction of the receiving port portion 11, and is the most end portion side of the female screw portion 12. The female screw end 12a is formed into an incomplete fin shape with the thread as a thread. Reference numeral 14 denotes a relief portion for the male screw portion 7 provided on the back side of the female screw portion 12. In the present embodiment, each of the relief portions 8 and 14 is a groove portion, but may have a structure other than the groove portion as long as the male screw portion 7 and the female screw portion 12 escape.

  1 a is a tapered surface provided on the insertion portion 1 b side, and this tapered surface 1 a is formed so as to continue to the escape portion 8. Further, 2c is a flat surface provided on the end surface side of the receiving port 11, and the flat surface 2c and the tapered surface 1a face each other when connecting the joint member 2 and the joint member 1 as shown in FIG. It is provided in such a position. The inclination angle θ of the taper surface 1a is formed to be about 30 degrees. This is because, when the inclination angle θ is smaller than 20 degrees, the force with which the caulking jig 30 presses the joint member in the caulking process described later. This is because the ratio of the caulking jig 30 pressing the joint member perpendicularly to the radial direction increases, and the efficiency of pressing the joint member decreases. For this reason, the inclination angle θ is preferably set to a value not less than 20 degrees and not more than 45 degrees, and is most desirably about 30 degrees as described above.

Reference numeral 5 denotes an O-ring, and this O-ring 5 is mounted in a mounting groove 6 formed on the outer peripheral surface of the end of the insertion portion 1 b of the joint member 1. On the other hand, 13 is a circumferential surface formed on the back side of the relief portion 14 of the joint member 2. When the insertion portion 1 b is connected to the receiving port 11, the O-ring 5 is provided on the circumferential surface 13 so as to be tightly sealed. .
9 is a female thread for a pipe formed on the opposite side to the insertion portion 1b of the joint member 1, and a one-touch L-shaped joint 10 for connecting a pipe from a water heater or a water supply pipe (not shown) is connected to the female thread 9 for a pipe. Has been.

  An insertion part 2b is formed on the other end side of the joint member 2 in the same manner as the joint member 1. On the outer peripheral surface side of the insertion part 2b, the male screw part 16 and the relief are provided in the same manner as in the joint member 1. The O-ring 5 is similarly mounted in the mounting groove 15 formed in the outer peripheral surface of the end portion of the insertion portion 2b. One or more of the joint members 2 are connected as a branch flow path between the joint member 1 and a joint member 3 to be described later, and an arbitrary number can be connected depending on the number of necessary branch flow paths.

The joint member 3 is connected to the end side of the joint member 2, and a receiving port portion 18 is formed on one end side of the joint member 3 in the same manner as the joint member 2. The female screw portion 19 and the relief portion 21 for the male screw portion 16 of the joint member 2 are formed, and the circumferential surface 20 for tightly sealing the O-ring 5 attached to the joint member 2 is formed. .
On the other end side of the joint member 3, a cylindrical portion 23 having a closed portion 22 is formed inside. On the outer periphery of the cylindrical portion 23, the joint member 3 is not shown on a floor surface or a hanging bracket. A U bolt or the like (not shown) for fixing to, etc. is provided so as to be able to be locked.

  In this embodiment, the thread threads of the male screw portions 7 and 16 formed on the joint members 1 and 2 and the female screw portions 12 and 19 formed on the joint members 2 and 3 are, for example, a screw nominal M28 × 1.5. Yes, this thread has about 4 threads. This number of threads is derived from the fact that, in the caulking step described later, if about 3 threads having a complete shape are secured, the connection state in which each joint member cannot be separated can be sufficiently maintained. The pitch of the thread is 1.5 mm in this embodiment, but is set as appropriate in consideration of the certainty of deformation of the thread in the caulking process described later and the ability to prevent each joint member to be connected. To do.

  For connecting the branch flow path, female pipes 24a, 24b, 24c for connecting the branch flow paths are provided in the joint members 1, 2, and 3, respectively. A one-touch joint 25 to which the resin pipe 28 can be connected is connected to the female threads 24a and 24b, and the branch passages are formed by rotating the joint members 1, 2, and 3 with respect to the axis of the connected joint member. It can be provided at any angle. Further, a plug 26 for closing the branch flow path is connected to the female thread 24c for pipe, and when it becomes necessary to connect to a terminal device newly, the plug 26 is removed and the one-touch joint 25 or the like is removed. It becomes possible to correspond as a new branch flow path by connecting.

Here, the one-touch joint 25 will be described. Reference numeral 60 denotes a joint body. By screwing the male thread 60b provided at the end of the joint body 60 with the female female threads 24a and 24b of the joint members 1 and 2, It can be connected.
Reference numeral 60 a denotes a male screw 60 b and a male screw provided on the other end side, and this male screw 60 a and a female screw 61 a of the cylindrical cap 61 are screwed together. Reference numeral 62 denotes a transparent cylinder made of a transparent or translucent resin, and the resin pipe 28 is accommodated by housing the transparent cylinder 62 between the joint body 60 and the cap 61 while mounting a seal member 63 formed of an O-ring. The state when inserted is provided so as to be visible. Reference numeral 64 denotes a retaining ring in which a claw-shaped part is formed on the inner peripheral side, and this claw-shaped part bites into the outer peripheral surface of the resin tube 28 to restrict the retaining of the resin tube 28. Reference numeral 65 denotes a spacer, and the cap 61 is tightened in a state where the seal member 66 is mounted between the spacer 65 and the see-through cylinder 62.
When the resin pipe 28 is connected, the core ring 67 is fitted to the distal end side of the resin pipe 28. When the resin pipe 28 is inserted into the one-touch joint 25 in this state, the resin pipe 28 can be inserted while confirming the insertion state, so that the resin pipe 28 28 can be securely inserted, and after the resin tube 28 is inserted, the claw-shaped portion of the retaining ring 64 bites into the outer peripheral surface of the resin tube 28 and is prevented from being detached, and the outer peripheral surface of the resin tube 28 and the fluoroscopic tube 62 are The inner peripheral surface is sealed by the seal member 66.
The one-touch joint 25 can be appropriately selected according to the pipe diameter of the resin pipe 28, and can be a pipe diameter corresponding to the pipe nominal diameters 10A, 13A, and the like. Therefore, it is not necessary to prepare the entire rotary header for different pipe diameters of the branch pipes, and only the one-touch joint 25 needs to be replaced.

  In the present embodiment, the one-touch joint 25 can be attached to and detached from the branch flow path of the joint member. However, the structure of this branch flow path is merely an example, and the structure of other branch flow paths is other than this. For example, it can also be set as the structure which integrated the joint member and the branch flow path with the same material. In addition, when the one-touch joint 25 is connected as a branch flow path as in this embodiment, when the connection work of the resin pipe 28 to the one-touch joint 25 fails, the one-touch joint 25 may be simply replaced. There is an advantage that it is not necessary to exchange the entire header.

  A mounting portion 27 having an octagonal cross section is formed on the outer peripheral surface of each joint member 1, 2, and 3, and each mounting member is branched by this mounting portion 27 as shown in FIGS. 3 and 4. It is provided so that it can be mounted on a flat surface such as a floor surface or a wall surface in a state where the road is rotated every 45 degrees. At this time, if the positions of the planar portions and corner portions of the mounting portions 27 of the adjacent joint members are made to coincide with each other, each joint member can be accurately rotated every 45 degrees. . When the one-touch joint 25 is connected to the branch portion, the connection work is facilitated by gripping the mounting portion 27 formed on the outer periphery of the body.

  The joint members 1, 2, and 3 are formed of a common material (forged product, cast product), and the shape of each joint part may be formed by an appropriate processing means such as cutting. In the present embodiment, the material of the joint member is brass, but bronze or other metal materials may be used in addition to brass.

Next, the case of connecting the rotary header in the above embodiment will be described with reference to FIG.
In FIG. 5A, when the joint member 1 on one side and the joint member 2 on the other side are screwed together, the insertion portion 1b of the joint member 1 is replaced with the receiving portion 11 of the joint member 2 as shown in FIG. The male threaded portion 7 of the joint member 1 and the female threaded portion 12 of the joint member 2 are screwed together. Next, as shown in FIG. 5C, when the male screw 7 is rotated in the screwing direction until it exceeds the screwing region of the male screw part 7 and the female screw part 12, the male screw 7 becomes the relief part 14 of the joint member 2, the female screw part 7. The screw 12 reaches the relief portion 8 of the joint member 1, and the male screw portion 7 and the relief portion 14, and the female screw portion 12 and the relief portion 8 function as concave and convex engagement portions, respectively, so that the joint member 1 and the joint member 2 are connected. It will be in the state.

In this connected state, since the O-ring 5 attached to the insertion portion 1b of the joint member 1 is in close contact with the corresponding circumferential surface 13 of the joint member 2, both the joint members 1 and 2 are maintained in a liquid-tight state.
In the present embodiment, the clearance A between the male screw portion 7 and the female screw portion 12 is about 0.2 mm when the male screw portion 7 shown in FIG. Therefore, both joint members 1 and 2 can be rotated with respect to each other. The gap A may be in a state where there is no slight gap of 0.2 mm or less in the process of screwing the joint member or there is no gap A. In the caulking process described later, the male screw end portion 7a. By deforming the thread of the female screw end 12a, the predetermined gap A is generated by slightly spreading from the state immediately after the screwing, and both joint members 1 and 2 can be rotated relative to each other. it can.

  Subsequently, in the caulking step, the caulking jig 30 is inserted between the joint members 1 and 2 that are in a state exceeding the screwing region as shown in FIG. As shown in FIG. 5 (e), the receiving portion 11 and the insertion portion 1b are pressed in opposite directions to the respective screwing directions so that the end portions on the inner side of the male and female screws are mutually connected as shown in FIG. 5 (f). To be caulked. The caulking jig 30 is a wedge-shaped jig having an inclined surface 30a and a flat surface 30b. When caulking, the caulking jig 30 is inserted into the flat surface 2c of the joint member 2 and the tapered surface 1a of the joint member 1. ing. The caulking jig 30 is formed in a ring shape that can be divided into at least two pieces. According to the divided ring caulking jig 30, the entire circumferences of the tapered surface 1a and the flat surface 2c of both joint members 1 and 2 are respectively provided. Since the clamp members 30 are clamped, the joint members 1 and 2 are aligned with respect to the caulking jig 30, and the joint members 1 and 2 can be caulked with accurate positioning. Note that the crimping jig is not ring-shaped, but if the taper surface 1a and the flat surface 2c are at least two positions facing each other in the circumferential direction, preferably three positions every 120 ° in the circumferential direction, Each joint member can be pressed uniformly.

  In the present embodiment, the tapered surface 1a is formed on the joint member 1 side, but this tapered surface is at least the tip of the caulking jig or each joint member pressed by the caulking jig. What is necessary is just to form in either one, and you may form in the joint member 2 side. In any case, the end portions of the respective screw portions can be caulked by pressing the joint members in directions in which they are separated from each other by the caulking jig through the tapered surface.

  The pressing force in the radial direction by the caulking jig 30 is converted into an axial pressing force by the taper surface 1a and the inclined surface 30a, and the caulking jig 30 also presses the flat surface 2c of the joint member 2. Yes. Accordingly, the joint members 1 and 2 are pressed in a direction away from each other (the direction opposite to the screwing direction: see the horizontal arrow in FIG. 2). As described above, the caulking operation is performed by pressing the tapered surface 1a of the joint member 1 and the inclined surfaces 30a of the caulking jig 30. In this caulking operation, the caulking jig 30 is connected to both the joint members 1. It becomes possible to end by separating from 2.

By pressing the joint members 1 and 2 in the direction in which they are separated from each other, the male screw end portion 7a and the female screw end portion 12a, which are the respective inner side ends of the joint members 1 and 2, are pressed against each other. The joint is deformed by caulking, and the screw pitch, which is the distance between the thread crests or crests or the valleys and troughs in this portion, becomes narrow, and the joint members 1 and 2 are rotatable and can be prevented from coming off. After the coupling members 1 and 2 are connected, they are not screwed again even if they are rotated in the reverse direction to the rotation at the time of screwing, and the connected state is maintained.
If the ranges of the male screw end portion 7a and the female screw end portion 12a to be deformed by caulking are set to a range of about half of the pitch of the screw, re-screwing can be prevented.

  In addition, the thread on the end side of the male thread 7 and the female thread 12 is notched vertically in advance so that the shape of the thread is weaker in cross section, that is, a fin. When the caulking work is performed by the caulking jig 30, the male screw end 7a and the female screw end 12a are caulked with a relatively small pressing force.

Next, the effect | action in the said embodiment is demonstrated. One joint member 1 in which the male screw portion 7 is formed and the other joint member 2 in which the female screw portion 12 is formed are screwed to each other, and the male screw end portion 7a and the female screw end are located at positions beyond the screwing region. By caulking the portion 12a, the threads of the male screw end portion 7a and the female screw end portion 12a that are separated from the screwing region are deformed, so that the male screw portion 12 and the female screw portion 12 are screwed again. There is no. At this time, since the male screw portion 7 is inserted into the escape portion 14 and the female screw portion 12 is inserted into the escape portion 8 with a gap therebetween, the joint members 1 and 2 can be rotated.
Therefore, it is possible to connect the joint members in a state where they can be rotated and prevented from being detached without requiring any new parts.
Furthermore, the vicinity of the end of the thread can be caulked by a simple method in which the pressing surfaces such as the tapered surface 1a and the flat surface 2c of the joint members 1 and 2 are clamped and pressed by the caulking jig 30. It can be carried out.

  Further, since the male screw end portion 7a and the female screw end portion 12a are caulked using the tapered portion 4 and the inclined surface 30a, the connecting portion does not become large, and accordingly, the appearance shape of the joint member becomes large. There will be no ugliness.

FIG. 6 is a partially cutaway front view showing another embodiment of the rotary header according to the present invention, and shows a case where the caulking jig is other than the wedge-shaped jig.
In the figure, reference numeral 35 denotes a chuck which is a caulking jig, and the direction in which the joint members 31 and 32 are separated in a state where the front end portion 35a of the chuck 35 is engaged with the end surface portions 31a and 32a of the joint members 31 and 32, respectively. By applying a force to the male screw portion 33, the male screw end portion 33a of the male screw portion 33 and the female screw end portion 34a of the female screw portion 34 can be caulked. In this case, since it is not necessary to provide a tapered surface on either side of the joint members 31 and 32, this taper surface machining step can be omitted, and the joint members 31 and 32 are flat surfaces near the connection end. Therefore, the strength in the vicinity of the end can be improved.
In addition, as a caulking jig other than this, for example, it is divided into a jig for fixing a joint member and a jig for pulling another joint member screwed to the joint member. Various caulking jigs can be used.

FIG. 7 is a partially cutaway front view showing the joint member. The joint member 41 is provided with a connection nut 47 attached to one end side with a stop ring 48 and another pipe (not shown) that can be screwed. In addition, a resin pipe (not shown) is inserted with the in-core 44 and the ring 45 attached at the other end, and the resin pipe is provided so as to be connectable by screwing a nut 46. is there.
Reference numeral 50 denotes a caulking jig (chuck). The chuck 50 presses the nut end surface 47a of the connection nut 47, the nut side step portion 43b of the sleeve 43, and the body member end surface 42a of the body member 42 to press the sleeve 43. The male screw end portion 51a in the provided male screw portion 51 and the female screw end portion 52a in the female screw portion 52 provided in the body member 42 are caulked. Reference numeral 49 denotes a seal ring mounted in a mounting groove 43 a provided in the sleeve 43, and the body member 42 and the sleeve 43 are sealed by the seal ring 49.
When tightening the resin pipe, when the nut 46 is tightened with the pipe inserted from the insertion portion 45b of the ring 45, the action of the tapered portion 42b formed on the body member 42 and the inclined portion 45a formed on the ring 45 is achieved. As a result, the ring 45 moves along the taper portion 42b and a force in the tightening direction acts on the insertion portion 45b, so that the resin pipe can be connected.
Thus, the structure of the rotary header in the present invention can also be applied to various joint structures used for connection with water meters and faucet fittings.

  The present invention is suitable for a rotary header that is used for water supply / hot water supply piping and the like and changes the direction of the branch flow path to a predetermined direction. It can be applied to any joint connection.

It is a partially notched front view which shows one Embodiment of the rotation header of this invention. It is a partially expanded sectional view of FIG. It is a front view which shows the state which the rotation header of FIG. 1 rotated. FIG. 4 is a side view of FIG. 3. (A) thru | or (f) is explanatory drawing which showed the case where the rotation header in this invention is connected. It is a partially notched front view which shows other embodiment of the rotation header in this invention. It is the partially cutaway front view which showed the coupling member.

Explanation of symbols

1, 2, 3 Joint member 1a Tapered surface 1b, 2b Insertion part 2c Flat surface 4 Branching header body 5 O-ring 6, 15 Mounting groove 7, 16 Male thread part 7a Male thread end part 8, 14, 17, 21 Escape Part 11, 18 Receiving part 12, 19 Female thread part 12a Female thread end part
27 Placement part 30 Caulking jig 30a Inclined surface 30b Plane

Claims (5)

  In a rotary header in which a branch header body is connected by a plurality of branch joint members, a male screw portion and a relief portion for a female screw portion on the back side of the male screw portion are inserted into one joint member. The other joint member is provided with a female screw portion and a relief portion for a male screw portion on the back side of the female screw portion, and a screwing area in which the receiving portion and the insertion portion are screwed is provided. A rotary header characterized in that, at a position beyond the above, the inner end portion of the male and female screw portions is caulked so that the joint members can be rotated and prevented from coming off.   The rotary header according to claim 1, wherein an O-ring is mounted in a mounting groove formed on an outer peripheral surface of an end portion of the insertion portion.   At a position beyond the screwing area where the receiving portion and the insertion portion are screwed together, the inner and outer threads of the male and female screws are pressed through the caulking jig in the direction opposite to the screwing direction of the receiving portion and the insertion portion. The rotary header according to claim 1 or 2, wherein the part side end is caulked.   The caulking jig is a wedge-shaped jig having an inclined surface and a flat surface, and the jig is inserted into the flat surface of the end surface of the receiving port and the tapered surface of the insertion portion facing the flat surface. The rotary header according to any one of claims 1 to 3. The rotary header according to any one of claims 1 to 4, wherein a mounting portion having an octagonal cross section is formed on the outer peripheral surface of the branch joint member.

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