JP2011179660A - Both-side insertable tees joint, rotary header using the same, and branched joint for meter unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a both-side insertable tees joint capable of constructing an arbitrary number of branched flow paths by being combined with general-purpose joints and decreasing the number of parts by improving its compactness as well as allowing stable fixing. <P>SOLUTION: The both-side insertable tees joint is provided with a cylinder 3 in a shape like a joint insertion opening in each of both ends in a tube axis direction P of tees joint body 2 and a branched receiving opening 4 which has a one-touch joint structure at the tees branched position of the tees joint body 2 and is used for joining resin tubes. Then, there are provided a rotary header using the tees joint and a branched joint for a meter unit. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a double-inserted cheese joint for providing a branch flow path in a water supply / hot water supply pipe, a rotary header using the joint, and a branch joint for a meter unit.

  Conventionally, when a branch channel is provided in a water supply / hot water supply pipe or the like, a header piece type three-way branch type joint is used. When the branch flow path is configured using a three-way branch joint, the branch flow path rotates independently, and the degree of freedom of pipe connection can be increased by changing the direction of the branch flow path. Furthermore, as a three-way branch joint for increasing the degree of freedom, there is a three-way branch joint that allows the header piece to be connected in an adjustable manner while ensuring a rotatable state.

  As this type of three-way branch joint, for example, a rotary header piece of Patent Document 1 is known. The header piece of the same document 1 constitutes a part of a rotating header, a straight flow path is formed in the body, and an adapter portion for connecting a piping pipe that is perpendicular to the straight flow path is provided. A cylindrical body protruding from the body is formed on one side of the flow path, and an insertion portion into which the cylindrical body is inserted is formed on the other side. A grab ring, a washer, and an O-ring are inserted into the inserted portion, and when a cylinder of another adjacent header piece is inserted, the cylinder is connected by screwing a socket. .

On the other hand, Patent Document 2 discloses a header for fluid distribution. This header is configured by connecting T-shaped three-way joints with a short pipe along the pipe axis direction. The three-way joint used for this header has a receiving port in which a rubber ring for sealing is arranged on the three-way side, and is connected to another three-way joint through this short tube by inserting a short tube into this receiving port. The
Patent Document 3 relates to a connecting pipe for locking and connecting connectors at both ends. In Patent Document 3, the connecting pipe is connected by being inserted into a connector having a main pipe portion and a branch pipe portion. Headers are listed.

Japanese Patent No. 3561622 JP 2000-240879 A JP-A-11-264492

  However, the header piece of Patent Document 1 is a commonly used general-purpose because the cylindrical body on one side of the flow path and the inserted portion on the other side have a pair of specific connection structures. Compatibility with joint members is low. Therefore, for example, when it is intended to provide a rotating header with this header piece, it is necessary to prepare a large number of this header piece as a dedicated joint member, and the increase in the number of header pieces often leads to an increase in cost. It was.

  On the other hand, when an attempt is made to provide a branch joint in which one flow path is branched into two ports by this header piece, when the cylinder side of the header piece is connected to the flow path, an inserted portion is disposed on the other end side. A connecting member such as a general elbow cannot be connected to the insertion portion. Therefore, when this header piece is used, a dedicated single-insertion type connection member having an insertion tube portion connectable to the insertion portion is separately provided, or a dedicated single-insertion screw fitting is separately provided. Therefore, it becomes necessary to connect the connection member.

  Furthermore, since the header piece has a structure in which adjacent header pieces are connected by screwing of the socket and an adapter portion is formed near the screwing portion of the socket in the body, it is difficult to fix and support the body. It has become. Therefore, when the rotary header to which the header piece is connected is fixedly supported, the vicinity of the joint receiving port is supported, and there is a possibility that the connection portion is wobbled and unstable.

On the other hand, in Patent Documents 2 and 3, there is a joint receiving port on both sides, and the structure is connected by a short tube or a connecting tube with the receiving port facing each other, so the interval between the branch ports becomes long. The total length of the header also tended to become extremely long. Since these headers are difficult to fit in a predetermined storage space when the total length is long, the number of branch ports may be limited.
Furthermore, since these headers have a connection mechanism for short pipes and connecting pipes on both sides of the main pipe portion, the connecting components are doubled, leading to an increase in cost.

  The present invention has been developed in order to solve the above-described problems, and the object of the present invention is that any number of branch flow paths can be configured in combination with a general-purpose joint in a stable state. An object of the present invention is to provide a double-inserted cheese joint that can be fixed and that can improve compactness and reduce the number of parts, a rotary header using the joint, and a branch joint for a meter unit.

  In order to achieve the above-described object, the invention according to claim 1 is a resin having a cylindrical portion that has a joint insertion shape at both ends in the tube axis direction of the cheese body, and a one-touch joint structure at the cheese branch position of the cheese body. It is a double insertion cheese joint provided with a branch receiving port for pipe joining.

  The invention which concerns on Claim 2 is the double insertion cheese joint which formed the engaging groove which engages with the locking ring for retaining of a one-touch joint on the outer periphery of a cylindrical part.

  The invention according to claim 3 is a double-inserted cheese joint in which the outer periphery of the branch receiving port is formed of a transparent cylindrical body so that the insertion amount of the resin tube can be visually confirmed.

  The invention which concerns on Claim 4 is a rotation header using the double insertion cheese joint which made the branch header joint which connects the insertion part of a cylindrical part to one-touch joints, such as a cheese form, and an elbow type, and has a some branch opening.

  The invention according to claim 5 is a rotary header using a double-inserted cheese joint in which a double-inserted cheese joint and a one-touch joint are connected rotatably around a pipe axis.

  In the invention according to claim 6, the secondary side of the water meter unit is connected to one side of the cylindrical part via a one-touch joint, and the elbow joint having a one-touch joint structure is connected to the other side of the cylindrical part to connect the branch joint. This is a branch joint for a meter unit using a double-inserted cheese joint having a structure.

  The invention according to claim 7 is a branch joint for a meter unit using a double-inserted cheese joint in which a double-inserted cheese joint, a one-touch joint, and an elbow joint are rotatably connected around a pipe axis.

  According to the first aspect of the present invention, since the cylindrical portion having the joint insertion shape is provided at both ends in the tube axis direction, the cylindrical portion is connected to a general-purpose joint, and an arbitrary number of branches are combined with the joint. A flow path can be provided. For this reason, a rotary header and a branch joint can be provided in combination with a general-purpose joint. In addition, the cylindrical part can be inserted and connected to an external joint, preventing this part from being fixed by a support tool, etc., and securing the ease of rotation with respect to the tube axis, while fixing the external joint to stabilize the whole. It becomes possible to install in the state. In addition, by inserting and connecting the cylindrical part, the dimensions in the tube axis direction can be shortened to exhibit excellent compactness, and the universal joint can be diverted as an external joint, reducing the number of parts and reducing the number of parts. Can be configured.

  According to the second aspect of the present invention, when the cylindrical portion is inserted into the one-touch joint, the retaining lock ring is engaged with the engaging groove, so that the retaining action of the cylindrical portion can be enhanced. In addition, the lock ring bites into the outer peripheral portion of the cylindrical portion and rotates together with the cylindrical portion, thereby firmly connecting to the one-touch joint while ensuring a smooth rotational state.

  According to the invention which concerns on Claim 3, since the amount of insertion can be visually confirmed from the outside when a resin pipe is inserted in a branch receptacle, it can be joined to a predetermined position reliably.

  According to the invention according to claim 4, it is possible to provide a branch header joint having a necessary number of branch receptacles in combination with a one-touch joint such as a general-purpose cheese shape or elbow shape, and while ensuring compactness, It is possible to connect firmly in a stable state.

  According to the invention which concerns on Claim 5, a resin pipe can be joined to the branch receptacle of the state which rotated both directions cheese joint and the one-touch joint to the arbitrary directions centering on a pipe axis, and changed the direction. Flexible piping is possible while saving space.

  According to the invention of claim 6, it can be connected to a water meter unit in combination with a general-purpose one-touch joint and elbow joint, and two branch receptacles can be provided on the secondary side of the water meter unit, Even when the water meter unit is installed in a narrow space while ensuring compactness, a branch receiving port can be provided.

  According to the invention which concerns on Claim 7, a resin pipe can be joined to the branch receptacle in the state which turned the both insertion cheese joint and the elbow joint to the arbitrary directions centering on the pipe axis, and changed these directions. It can be joined to an external flow path while ensuring the degree of freedom of the mouth.

It is sectional drawing which showed one Embodiment of the double insertion cheese joint in this invention. It is sectional drawing which showed an example of the rotation header using the both insertion cheese joint of this invention. It is a partially expanded sectional view of FIG. It is a perspective view which shows the state which attached the support tool to the rotation header. It is a perspective view which shows the state which removed the support tool in FIG. It is sectional drawing which showed an example of the branch joint for meter units using the double insertion cheese joint of this invention. It is sectional drawing which showed the meter unit for water supply.

  Below, embodiment of the double insertion cheese joint in this invention is described in detail based on drawing. FIG. 1 is a cross-sectional view showing an embodiment of a double-inserted cheese joint according to the present invention. A double-inserted cheese joint main body (hereinafter referred to as a joint main body) 1 in the present invention has a cheese main body 2, and cylindrical portions 3, 3 exhibiting joint insertion shapes at both ends of the tube axis P of the cheese main body 2, respectively. Is provided. Further, a branch receiving port 4 is provided at the cheese branch position of the cheese body 2, and a resin tube 5 can be joined to the branch receiving port 4. The cheese body 2 is formed of a high-strength plastic having heat resistance, for example, polyphenylene sulfide.

  The cylindrical portion 3 is provided so as to be inserted and connected to an external one-touch joint 6 described later. The inner and outer dimensions of the cylindrical portion 3 are approximately the same diameter as the resin pipe 5 such as a crosslinked polyethylene pipe or a polybutene pipe. On the outer periphery of the cylindrical portion 3, an engagement groove 8 that engages the locking ring 7 for preventing the removal of the one-touch joint 6 is formed. The length of the cylindrical portion 3 is a length that can be inserted into an external one-touch joint, which will be described later, accommodates the insertion guide 13 in the joint back, is sealed by the seal member 12, and the lock ring 7 can be locked in the locking groove 8. That's it. Thereby, the coupling body 1 and the one-touch coupling 6 can be connected.

  In FIG. 3, the position of the locking groove 8 in the tube axis P direction is a joint end surface 6 a in a one-touch joint 6 such as a cheese-shaped joint 21 described later in a state where the lock ring 7 is engaged with the locking groove 8. Between the flange part outer surface 2a of the cheese main body 2, it provides in the position which forms the clearance gap t of the grade which both surfaces do not contact | abut. As a result, the joint body 1 and the one-touch joint 6 can be rotated about the pipe axis P, respectively, and the dimensions in the pipe axis P direction can be shortened to exhibit excellent compactness.

  The branch receiving port 4 has a double cylinder structure in which a transparent cylinder 11 is formed on the outer peripheral side of a core part 10 formed in a cylindrical shape, and a seal member 12 and a lock ring 7 are interposed between them. The insertion guide 13 is mounted.

The core portion 10 is formed integrally with the cheese body 2, and a concave groove 14 is formed on the outer peripheral side of the core portion 10.
The transparent cylinder 11 is formed of, for example, a transparent resin, and is screwed to the outer peripheral side of the enlarged diameter portion 15 formed in the core portion 10. Thereby, the insertion amount of the resin tube 5 can be visually confirmed from the outer side of the transparent cylinder 11. Further, a substantially cylindrical cap 16 is attached to the outer peripheral side of the transparent cylinder 11 by screwing.

  The seal members 12 and 12 are made of O-rings, and are respectively attached to the concave grooves 14 of the core portion 10. The lock ring 7 is formed in a substantially annular shape from stainless steel or the like, and has an annular ring portion 18 and a holding claw 19, and the holding claw 19 is bent with respect to the ring 18 at a predetermined inclination angle. The lock ring 7 is mounted in a state where a gap is provided so that the ring portion 18 is rotatable between the upper surface side of the transparent cylinder 11 and the inner peripheral bottom surface side of the cap 16.

  The insertion guide 13 is made of a resin material such as polyethylene and has a slit (not shown). This insertion guide 13 is temporarily fixed in the branch receiving port 4 so as to be locked between the seal member 12 and the holding claw 19 of the lock ring 7, and is expanded or contracted by the slit when the resin tube 5 is inserted. However, the resin tube 5 can be guided.

  The branch receiving port 4 has a one-touch joint structure with the above-described configuration, and when the resin tube 5 is joined to the branch receiving port 4, the resin tube 5 is inserted from between the core portion 10 and the transparent cylindrical body 11. The inner peripheral side is sealed by the seal member 12 at the time of the insertion, and the water tightness is maintained. At this time, since the insertion guide 13 is pushed in the insertion direction by the resin tube 5 and the resin tube 5 is guided by the insertion guide 13, the end of the resin tube 5 does not wind up the seal member 12, and the seal member 12, the sealing performance is surely exhibited.

  In this case, since the holding claws 19 of the lock ring 7 bite into the outer peripheral side of the resin tube 5 simultaneously with the sealing by the sealing member 12, the resin tube 5 is sealed and bonded while being prevented from coming out. Moreover, since the insertion amount of the resin tube 5 can be visually confirmed from the outer side of the transparent cylinder 11, the resin tube 5 can be reliably inserted and connected to a predetermined position of the branch receiving port 4.

  In this embodiment, the branch receiving port 4 has a general-purpose connection structure in which the seal member 12, the lock ring 7, and the insertion guide 13 are mounted. However, the resin pipe 5 can be sealed and can be prevented from coming off. If it is the branch receptacle 4 which has the function to do, it will not be concerned with the structure. For this reason, for example, the branch receiving port 4 can have a structure other than a double cylinder, or the resin pipe 5 can be sealed by a seal structure other than the inner peripheral seal.

  Then, one Embodiment of the rotation header using said both insertion cheese joint is described. In FIG. 2, an example of the rotation header using the double insertion cheese joint is shown. The rotary header body (hereinafter referred to as a header body) 20 includes the joint body 1 described above and one-touch joints 6 such as a cheese joint 21, an elbow joint 22, and a straight joint 23. The mouth) 3 is connected to these one-touch joints 6 and is configured as a branch header having a plurality of branch receiving ports 4 and receiving portions 25.

  In FIG. 2, the connecting portion of each one-touch joint 6 with the joint body 1 and the joint portion with the resin pipe 5 may have a general-purpose structure, and in this embodiment, both are branch receiving ports of the joint body 1. 4 is provided as a receiving portion 25 having the same structure as that of No. 4. The receiving portion 25 has a cylindrical core body portion 26, and has a double cylinder structure in which the transparent cylinder 11 is formed on the outer peripheral side of the core body portion 26. Between these, the seal member 12, the lock ring 7, and the insertion guide 13 are mounted, and a cap 16 is attached to the outer peripheral side of the transparent cylinder 11 by screwing.

  With this structure, the cylindrical portion 3 and the resin pipe 5 can be connected to each receiving portion 25 of the one-touch joint 6. For this reason, for example, it is also possible to connect the cylindrical portion 3 of the double-inserted cheese joint of the present invention to the receiving portion 25 at the branch position of the cheese-shaped joint 21.

  In the header body 20, when the cylindrical portion 3 is inserted into the receiving portion 25 of each one-touch joint 6, the joint body 1 and the one-touch joint 6 can rotate around the pipe axis P. This makes it possible to change the direction of the branch receiving port 4 of the joint body 1 and the receiving portion 25 of the one-touch joint 6, and connecting the resin pipe 5 to the branch receiving port 4 and the receiving portion 25 having different directions. Is possible. At this time, since the lock ring 7 is mounted in a rotatable state, the lock ring 7 is attached together with the holding claw 19 of the lock ring 7 biting into the outer peripheral side of the cylindrical portion 3 or the resin tube 5. It is designed to rotate.

The number of combinations of the joint body 1 and the one-touch joint 6 can be freely changed. By changing this, it is possible to provide a rotating header having an arbitrary number of branch receiving ports 4 and receiving portions 25. Become. Therefore, although not shown, in addition to the rotary header provided with the four branch receptacles 4 and the receptacle 25 shown in FIG. 2, elbow joints 22 and straight joints 23 are connected to both sides of the joint body 1. The two branch receiving ports 4 and the receiving portion 25 may be formed together. In this case, the receiving portion 25 of the straight joint 23 becomes an inlet as a rotary header, and the receiving port of the elbow joint 22 The portion 25 and the branch receiving port 4 of the joint body 1 serve as a header take-out portion (a connection portion of the resin pipe 5).
Further, in the same manner as described above, an elbow joint 22 and a straight joint 23 are connected to both sides of the joint body 1 to provide a rotary header having three branch receiving ports 4 and a receiving portion 25, or more A rotating header having a number of branch receptacles 4 and receptacles 25 can also be provided.

  FIG. 4 shows a state in which the support tool 30 is attached to the header body 20. As shown in FIG. 5, the support 30 has a fixing portion 31 and a mounting portion 32. The fixing portion 31 has a fixing surface 33 that can be attached to a mounting surface such as a floor surface (not shown), and a through hole 34 for fixing the entire support 30 with screws or the like (not shown). The mounting portion 32 has an arc shape in which a part of a circle is notched, and the elbow joint 22 and the transparent tubular body 11 of the straight joint 23 can be mounted on the inner peripheral side of the notched portion. ing.

  When the header body 20 is attached using the support tool 30, first, the fixing surface 33 is brought into contact with the attached surface, and a screw is screwed onto the attached surface from the through hole 34 to fix the support tool 30. Next, the header body 20 is attached to the support 30 by fitting the transparent cylinder 11 of the header body 20 to the mounting portion 32. By mounting the header body 20 in this way, the header body 20 is attached in a stable state.

  In this case, each joint can be rotated even after the header body 20 is fixed to the support tool 30. At this time, since the transparent cylinder 11 is fixed to the support tool 30, the cylindrical portion 3 is attached to the support tool 30. It is not fixed and each joint is easy to rotate.

  Furthermore, although not shown, for example, the support tool 30 may be fixed to a parallel material such as a channel material, and the header body 20 may be attached to the support tool 30. In this case, the header body 20 is fixed in a state where the linearity of the tube axis P is maintained by fixing the support to the channel material.

Next, FIG. 6 shows an example of a branch joint for a meter unit using the double insertion cheese joint of the present invention.
This branch joint body 40 is a joint for a water meter unit 41, and is connected to a straight joint 42 that is a one-touch joint and the elbow joint 22 having the one-touch joint structure described above.

  In the straight joint 42 of this embodiment, a receiving portion 25 is formed on one side, and the cylindrical portion 3 on one side of the joint body 1 is connected to the receiving portion 25. On the other hand, a male threaded portion 43 is formed on the other side of the straight joint 42, and this male threaded portion 43 is formed on an elbow member 45 provided between the water meter unit 41 and is screwed to the threaded portion 46. . A nut member 47 is provided on the other side of the elbow member 45, and the elbow member 45 is connected to the water meter unit 41 via the nut member 47.

The joint body 1 has a branch joint structure in which the secondary side of the water meter unit 41 is connected to one side of the cylindrical portion 3 via a straight joint 42 and the elbow joint 22 is connected to the other side of the cylindrical portion 3. ing.
With this configuration, when the primary side of the one-touch joint 42 is the inlet from the water meter unit 41, the branch joint body 40 is formed by the branch receiving port 4 of the joint body 1 and the receiving portion 25 of the elbow joint 22. The flow path of the water meter unit 41 can be branched. For example, the two flow paths can be taken out to branch into indoor piping.
In FIG. 7, the branch joint body 40 is connected to the meter unit 41 via the elbow member 45, but the branch joint body 40 is directly connected to the water meter unit 41 without using the elbow member. May be.

  In this branch joint body 40, the joint body 1, the one-touch joint 42, and the elbow joint 22 are connected so as to be rotatable about the pipe axis P, respectively. It is possible to change the direction of 25. Also in this case, the lock ring 7 rotates together with the cylindrical portion 3 and the resin tube 5 as in the case of the rotary header.

  As described above, the double-inserted cheese joint of the present invention has the cylindrical portions 3 and 3 at both ends of the cheese body 2 in the tube axis P direction and has a one-touch joint structure at the cheese branch position of the cheese body 2. Since it has the opening 4, the cylindrical portion 3 can be connected to a one-touch joint 6 such as a general-purpose cheese-shaped joint 21, elbow joint 22, straight joint 23, etc., and cost reduction is achieved by mass production effect using an existing joint. Meanwhile, piping members such as the header body 20 and the branch joint body 40 can be provided.

  In addition, since the number of joint bodies 1 to be used is minimized by using a general-purpose joint, and the branch interval between the branch receiving port 4 and the receiving portion 25 in the header body 20 and the branch joint body 40 is shortened. Installation by space saving becomes possible.

  Further, each joint portion can be easily rotated even after the header body 20 and the branch joint body 40 are fixed, and at this time, the resin tube 5 can be rotated while being firmly retained in a sealed state by the seal member 12 and the lock ring 7. At that time, as general-purpose cheese joints, elbow joints, and straight joints, joints often used in so-called pre-branch type water supply piping systems that are not mainly used in header systems can be used.

  Since the joint body 1 has the engagement groove 8 on the outer periphery of the cylindrical portion 3, the lock ring 7 of this external joint engages with the engagement groove 8 when the cylindrical portion 3 is inserted into the external joint. Thus, the joint can be connected in a rotatable state in a state where it is securely prevented from coming off.

DESCRIPTION OF SYMBOLS 1 Joint body 2 Cheese body 3 Cylindrical part 4 Branch receiving port 5 Resin pipe 6 One-touch joint 7 Lock ring 8 Engaging groove 11 Transparent cylinder 22 Elbow joint 41 Water meter unit P Pipe shaft

Claims (7)

  A cylindrical portion having a joint insertion shape is provided at both ends in the tube axis direction of the cheese body, and a branch receiving port for resin pipe joining having a one-touch joint structure is provided at the cheese branch position of the cheese body. Inserted cheese joint.   The double-inserted cheese joint according to claim 1, wherein an engagement groove for engaging a lock ring for retaining the one-touch joint is formed on an outer periphery of the cylindrical portion.   The double-inserted cheese joint according to claim 1 or 2, wherein an outer periphery of the branch receiving port is formed of a transparent cylinder so that an insertion amount of the resin pipe can be visually confirmed.   The double insertion cheese joint according to any one of claims 1 to 3, wherein the insertion opening of the cylindrical portion is connected to a one-touch joint such as a cheese shape or an elbow shape to form a branch header joint having a plurality of branch openings. Rotating header.   The rotary header using the double-inserted cheese joint according to claim 4, wherein the double-inserted cheese joint and the one-touch joint are connected so as to be rotatable about a pipe axis.   2. A branch joint structure is formed by connecting a secondary side of a water meter unit to one side of the cylindrical part via a one-touch joint and connecting an elbow joint having a one-touch joint structure to the other side of the cylindrical part. The branch joint for meter units using the double insertion cheese joint of any one of thru | or 3.   The branch joint for meter units using the double-inserted cheese joint according to claim 6, wherein the double-inserted cheese joint, the one-touch joint, and the elbow joint are connected so as to be rotatable about a pipe axis.

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