JP5224329B2 - Joint and method for inserting and fixing a pipe to the joint - Google Patents

Description

  The present invention relates to a joint attached to a header provided at a branch portion in a water and hot water supply system, and a pipe insertion fixing method to the joint.

  In the hot water and hot water supply system, a header for water supply / hot water supply is provided at a branch portion, and the branch is branched from the header. A joint is attached to the header, and a resin pipe is connected to the header. There are an integrated type and a separated type of joint. When the integrated type is used, when the pipe is inserted into the joint, whether or not the pipe has been normally inserted is confirmed by visual observation and sound. Therefore, it is difficult to confirm that the pipe has been normally inserted into the joint. Furthermore, according to the integrated type, when the pipe is not inserted normally, if the pipe is inserted again normally, the inserted pipe is fixed by a retaining ring, a compression ring, etc., and there is no mechanism for releasing this fixing. .

One example of a separation type joint conventionally used will be described. FIG. 8 is a side view with a partially cutaway portion for explaining a conventional joint.
The joint 100 is connected to an adapter 101 whose tip 103 is connected to a header (not shown) and a resin pipe 110 so as to cover the central surface portion 107 from one end, and the other end (ie , Tip portion) 109 is formed of in-core 102 inserted into adapter 101. A grip ring 104 for fixing the inserted incore 102 is provided inside the portion of the adapter 101 where the tip 109 of the incore 102 is inserted.

  The surface portion 107 of the in-core 102 is inserted into the resin pipe as described above. At that time, one end of the in-core 102 is inserted into the pipe until the tip surface of the pipe is stopped by the vertical surface of the protrusion 108. In this state, the in-core 102 is inserted inside the adapter 101 so as to cover the surface portion from one end to the center, and the resin pipe is fixed in the adapter by the grip ring. Is done.

  The distal end portion 103 of the adapter 101 has a shape corresponding to the shape of the header, and the distal end portion of the adapter is inserted into the corresponding header and fixed in that state by, for example, a fastener. When an in-core with a part inserted in a resin pipe is inserted into the adapter, if the insertion is not sufficient, the grip ring is expanded using a special jig to release the fixing function for fixing the in-core. Then, the mounting of the resin pipe to the in-core and the insertion of the in-core into the adapter are performed again.

In the case of a conventional joint, a release mechanism is provided in the case where the fitting is not successfully performed, but the confirmation of the mounting state of the pipe 110 and the in-core 102 to the adapter 101 is visually confirmed. FIG. 9 shows the state of the joint. The state shown in FIG. 9B is a normal state. That is, one O-ring 106 can be confirmed through the resin pipe 110. On the other hand, the state shown in FIG. 9A is a state in which two O-rings 105 and 106 can be confirmed through the resin pipe 110 and indicates that the insertion is insufficient. The state shown in FIG. 9C is a state in which the O-ring cannot be confirmed through the resin pipe 110, and shows that the resin pipe 110 is shallowly attached to the in-core 102 and a complete water stop function cannot be exhibited. .
JP 2004-183761 A

As described above, in the integrated type, when the pipe is inserted into the joint, whether or not the pipe has been normally inserted is confirmed by visual observation and sound. Therefore, it is difficult to confirm that the pipe has been normally inserted into the joint. Furthermore, according to the integrated type, when the pipe is not inserted normally, if the pipe is inserted again normally, the inserted pipe is fixed by a retaining ring, a compression ring, etc., and there is no mechanism for releasing this fixing. .
In the separation type, it is difficult to visually recognize when working in a dark place, and it is necessary to confirm by an expert, and it is difficult to confirm the insertion state easily and reliably.

  Therefore, the object of the present invention is to solve the conventional problems, insert a resin pipe with one touch, and easily and surely check the insertion, and easily release function even when the mounting condition is not good And a method of inserting and fixing a pipe to the joint.

The present inventor has intensively studied to solve the conventional problems described above. As a result, the following was found. In other words, a resin pipe is inserted from one end of the joint adapter having a retaining member that prevents the reverse movement from proceeding to the other end having the blocking plate, and is blocked by the blocking plate. When the pipe is fixed, the pipe is surely inserted to a desired position, and the insertion state can be surely confirmed visually. Next, the in-core is inserted from the other end side (header side) of the joint adapter into the pipe fixed in such a manner as to be blocked by the other end portion provided with the joint adapter blocking plate. Thus, it has been found that a joint in which a pipe is mounted in a desired state can be reliably formed with one touch.
Further, by making the blocking plate material a transparent material such as plastic, the insertion state can be reliably confirmed visually.

  Furthermore, as described above, when releasing a pipe inserted into a joint consisting of a joint adapter and an in-core, the pipe is further pushed to the in-core side, cut near the end of the pipe on the nut side, and the pipe is joined to the joint. Since it can be released by removing it from the adapter, it has been found that the release function can be easily provided.

The present invention has been made based on the above research results, and the first aspect of the coupling adapter of the present invention is a main body portion having a flat end surface portion, each having a through hole portion corresponding to the center. And a cylindrical peripheral edge and a bottom wall having an opening located at one end of the peripheral edge, and one surface of the bottom wall is disposed in contact with the flat end surface A fitting adapter comprising a blocking plate material, a nut connected to the main body portion, and a retaining member having a tooth portion disposed between the main body portion and the nut to prevent progress in the reverse direction. There,
A resin pipe is irreversibly inserted from the nut-side end of the adapter formed by combining the blocking plate material, the main body, the retaining member, and the nut, and the tip of the inserted pipe The joint adapter is fixed to the surface of the bottom wall of the blocking plate.

The second aspect of the joint adapter of the present invention further comprises a fixing ring for fixing the retaining member,
The main body portion includes the flat end surface portion at one end portion and a connection portion with the nut at the other end portion, and has a retaining member accommodating portion for accommodating the retaining member therein. And
The nut includes a connection portion corresponding to the connection portion of the main body portion at one end portion, and the end portion into which the resin pipe is inserted at the other end portion, and the fixing ring is provided inside the nut. It is the adapter for couplings characterized by having the fixing ring accommodating part which accommodates.

  According to a third aspect of the joint adapter of the present invention, the connecting portion of the main body portion is formed of a thread formed on the outer surface, and the connecting portion of the nut is formed of a corresponding screw groove formed on the inner surface. The screw thread and the screw groove are meshed and connected, and the retaining member accommodating portion and the fixing ring accommodating portion each have a truncated cone shape, and have an inner diameter toward the boundary between the main body portion and the nut. The coupling adapter is characterized in that the retaining member and the fixing ring are disposed substantially at the boundary between the main body and the nut.

Regarding the explanation of the drawings, the first aspect of the in-core used in the present invention is that the header used for the branching section is inserted into the header to be able to stop water, and the resin pipe inserted into the joint adapter is used to stop water. Each of the head and the leg has a through hole in the center,
The outer diameter of the head is larger than the outer diameter of the resin pipe, the outer diameter of the leg is substantially the same as the inner diameter of the resin pipe, and the head and the leg are integrally formed. In-core.

Regarding the explanation of the drawings, the second aspect of the in-core used in the present invention has at least one O-ring on the head, has a water stop function with the header, and has at least one O-ring on the leg. It is an in-core which has another O-ring and has a water stop function between the resin pipes.

  According to a first aspect of the joint of the present invention, a body portion having a flat end surface portion, each having a through-hole portion corresponding to the center, a cylindrical peripheral portion, and one end portion of the peripheral portion are located. A bottom wall portion having an opening, and one surface of the bottom wall portion is disposed in contact with the flat end surface portion, a nut connected to the body portion, the body portion, and the A retaining member having a tooth portion disposed between the nut and preventing the progression in the reverse direction, and formed by combining the blocking plate member, the main body portion, the retaining member, and the nut. An adapter for a joint in which a resin pipe is irreversibly inserted from an end portion on the nut side, and a distal end surface portion of the inserted pipe is blocked and fixed to the surface of the bottom wall portion of the blocking plate member, and a branch portion Inserted into the header used for And a leg portion that is inserted into the joint adapter and is fixed substantially on the same surface, and a leg portion that is inserted so as to be able to stop water, the outer diameter of the head being the outer diameter of the resin pipe The joint is provided with an in-core in which the outer diameter of the leg portion is substantially the same as the inner diameter of the resin pipe and the head portion and the leg portion are integrally formed.

According to a second aspect of the joint of the present invention, the main body portion includes the flat end surface portion at one end portion and a connection portion with the nut at the other end portion, and the retaining portion is provided inside. A retaining member housing portion for housing the member;
The nut includes a connection portion corresponding to the connection portion of the main body portion at one end portion, and the end portion into which the resin pipe is inserted at the other end portion, and the fixing ring is provided inside the nut. It is a joint characterized by having the fixing ring accommodating part which accommodates.

  According to a third aspect of the joint of the present invention, the head has at least one O-ring and has a water stop function with the header, and the leg has at least one other O-ring. And it is a joint provided with the water stop function between the resin pipes.

  According to a fourth aspect of the joint of the present invention, the connecting portion of the main body portion is formed of a screw thread formed on the outer surface, and the connecting portion of the nut is formed of a corresponding screw groove formed on the inner surface. The screw thread and the screw groove are meshed and connected, and the retaining member accommodating portion and the fixing ring accommodating portion each have a truncated cone shape, and the inner diameter increases toward the boundary between the main body portion and the nut. And the said retaining member and the said fixing ring are arrange | positioned at the substantially boundary part of the said main-body part and the said nut, It is a coupling characterized by the above-mentioned.

A first aspect of a method for inserting and fixing a pipe to a joint according to the present invention includes a main body having a flat end surface, a cylindrical peripheral edge, and a bottom having an opening located at one end of the peripheral edge. And a blocking plate member arranged so that one surface of the bottom wall portion is in contact with the flat end surface portion, a nut connected to the main body portion, and between the main body portion and the nut. From the end on the nut side of the joint adapter provided with a retaining member having a tooth portion that is arranged and prevents progressing in the reverse direction, the resin pipe is connected to the bottom wall portion of the blocking plate. Irreversibly inserts and secures until blocked by the surface of
An in-core that integrally includes a head used for a branching part so as to be able to stop water and a leg part inserted so as to be able to stop water into the resin pipe inserted into the joint adapter. Is inserted into the resin pipe until the end surface of the boundary between the leg portion and the head contacts the bottom wall portion of the blocking plate member.

According to a second aspect of the method for inserting and fixing the pipe to the joint according to the present invention, the tooth portion of the retaining member protrudes toward the flat end surface of the adapter, and the resin pipe is in a direction opposite to the insertion direction. To stop progressing,
A method of inserting and fixing a pipe to a joint, characterized in that the front end surface of the resin pipe that is blocked and fixed to the surface of the bottom wall portion of the blocking plate member can be visually recognized through the bottom wall portion of the blocking plate member. It is.

A first aspect of a method for releasing a resin pipe from a joint adapter includes: a main body portion having a flat end surface portion; a cylindrical peripheral edge portion; and a bottom having an opening located at one end portion of the peripheral edge portion. And a blocking plate member arranged so that one surface of the bottom wall portion is in contact with the flat end surface portion, a nut connected to the main body portion, and between the main body portion and the nut. From the end on the nut side of the joint adapter provided with a retaining member having a tooth portion that is arranged and prevents progressing in the reverse direction, the resin pipe is connected to the bottom wall portion of the blocking plate. Irreversibly inserts and secures until blocked by the surface of
The resin pipe inserted and fixed irreversibly in the joint adapter is further pushed in the insertion direction,
Cutting near the nut side end of the resin pipe,
Removing the resin pipe from the fitting adapter;
This is a method of releasing a resin pipe from the joint adapter.

  According to the adapter for a joint of the present invention, the retaining pipe member having a tooth portion that prevents the reverse progression is provided, the resin pipe is vertically oriented from the nut side, and the flat bottom wall of the blocking plate is the tip surface. When the resin pipe is inserted until it comes into contact with the portion, the resin pipe is easily positioned and fixed to the joint adapter with one touch in a state where the front end surface of the resin pipe and the flat bottom wall portion are substantially flush with each other. Thus, it can be easily confirmed visually that the resin pipe is fixed at a desired position.

Regarding the explanation of the drawings , according to the in-core used in the present invention, it is inserted into the header used in the branching section so as to be able to stop water, and inserted into the resin pipe inserted into the joint adapter so as to be able to stop water. Therefore, it can be attached to the adapter and the adapter for joints with one touch so that the water can be stopped.

  According to the joint of the present invention, the resin pipe can be easily positioned and fixed to the joint adapter with one touch, and it can be easily confirmed visually that the resin pipe is fixed at a desired position. Can be attached to the resin pipe fixed to the joint adapter, and can be attached to the header provided at the branch portion with a water stop function with a single touch.

  According to the method of inserting and fixing the pipe to the joint of the present invention, the resin pipe is easily positioned and fixed to the joint adapter with a single touch, and it is easily confirmed visually that the resin pipe is fixed at a desired position. it can.

  Furthermore, according to the method for releasing a resin pipe from the joint adapter according to the present invention, the resin pipe can be easily released from the joint adapter simply by further pushing the resin pipe in the insertion direction. Furthermore, by holding the cylindrical peripheral edge of the blocking plate material, it is possible to prevent hand fat from adhering to the O-ring portion of the in-core, and to prevent the in-core function from being stopped due to the release.

The aspect of the joint of the present invention and the method for inserting and fixing a pipe to the joint will be described in detail with reference to the drawings.
One aspect of the adapter for a joint of the present invention is located at one end portion of a main body portion having a flat end surface portion and a cylindrical peripheral edge portion and a peripheral edge portion, each having a through-hole portion corresponding to the center. A bottom wall portion having an opening, and one surface of the bottom wall portion is disposed in contact with the flat end surface portion, a nut connected to the main body portion, and between the main body portion and the nut. An adapter for a joint comprising a retaining member having a tooth portion that is arranged to prevent progression in the reverse direction, and is an adapter nut formed by combining a blocking plate material, a main body portion, a retaining member, and a nut This is a joint adapter in which a resin pipe is irreversibly inserted from the end on the side, and the tip surface portion of the inserted pipe is blocked and fixed to the surface of the bottom wall portion of the blocking plate member.

  FIG. 1 is a diagram illustrating a joint adapter. As shown in FIG. 1, the joint adapter includes a main body portion having a flat end surface portion, a cylindrical peripheral edge portion, and a bottom wall portion located at one end of the peripheral edge portion and having an opening. One side of the wall part is arranged in contact with the flat end face part, a nut connected to the main body part, and a tooth that is arranged between the main body part and the nut to prevent progress in the reverse direction And a retaining ring for fixing the retaining member.

  Fig.1 (a) is the perspective view (left figure) and side view (right figure) of a nut. As shown in FIG. 1A, the nut 11 includes an end portion 12 on the side where a resin pipe is inserted, and a connection portion 13 corresponding to a connection portion of a main body portion described later, and accommodates a fixing ring therein. The fixing ring accommodating part 20 is provided. The end 12 on the side where the resin pipe is inserted is provided with a hole having a size substantially equal to the cross-sectional outer shape of the resin pipe. The connecting portion 13 of the nut 11 is formed by a thread groove formed along the inner surface.

  FIG. 1B is a perspective view (left view) and a side view (right view) of the fixing ring. As shown in FIG. 1B, the fixing ring 14 includes a rear end portion 15 that comes into contact with a retaining member described later, and a front end portion 16 that comes into contact with a fixing ring housing portion of the nut. Each has a shape combined with a retaining member and a fixing ring housing portion of the nut. For example, the rear end portion 15 includes a portion inserted into the retaining member and an end surface corresponding to the end surface of the retaining member. The front end portion has an inclined surface corresponding to the fixing ring housing portion of the nut.

  FIG. 1C is a perspective view (left view) and a side view (right view) of the retaining member. As shown in FIG. 1C, the retaining member 17 has a tooth portion 19 that prevents the inserted resin pipe from proceeding in the reverse direction. Preferably, the retaining member 17 includes a metal tooth portion 19 so that the inserted resin pipe does not return. The retaining member 17 is formed by processing a thin plate, and is accommodated in a retaining member accommodating portion of a main body portion to be described later, and is a hollow that protrudes in a tapered manner in the vertical surface 18 and the pipe traveling direction so as to be fixed. And a tooth portion 19 having a generally truncated cone shape.

FIG.1 (d) is the perspective view (left figure) and side view (right figure) of a main-body part. As shown in FIG. 1 (d), the main body 31 includes a flat end surface portion 32 that is flush with the tip end surface of a pipe inserted as will be described later, and a nut connecting portion 33 at the end on the nut side. And a retaining member accommodating portion 34 for accommodating the retaining member described above. The connecting portion 33 includes a screw thread corresponding to a thread groove formed along the inner surface of the connecting portion 13 of the nut described above. The retaining member accommodating portion 34 has a function of preventing the resin pipe from proceeding in the reverse direction, and widens toward the nut side so that the tooth portion of the retaining member is accommodated. Furthermore, you may provide the recessed part 35 to which the fastener which fixes between a main body part and the header mentioned later is attached. The flat end surface portion 32 of the main body portion is provided with a hole portion having a size substantially the same as the cross-sectional shape of the resin pipe. In addition, a connection part is not limited to a screw thread and a screw groove, The member which can be connected closely can be used suitably.
Further, the fixing ring 14 is not always necessary, and only the retaining member 17 may be used. Instead of the fixing ring, a ring-shaped member may be used to protect the retaining member.

  FIG.1 (e) is the perspective view (left figure) and side view (right figure) of a prevention board material. As shown in FIG. 1 (e), the blocking plate member 61 includes a cylindrical peripheral edge 62 and a bottom wall 63 having an opening 64 located at one end of the peripheral edge 62. The cylindrical peripheral edge 62 and the bottom wall 63 are integrally formed. One surface of the bottom wall portion 63 (that is, the upper surface in FIG. 1E) is disposed in close contact with the flat end surface portion 32 of the main body portion 31. The blocking plate member 61 is a cylindrical peripheral portion 62. The inner peripheral surface 65 is attached to the main body portion 31 so as to cover the outer peripheral surface of the end surface portion 32 of the main body portion 31. The opening 64 is generally circular, and its size is smaller than the inner diameter of the resin pipe. The inserted resin pipe does not penetrate the opening 64 and is blocked by the bottom wall 63. The material of the blocking plate is preferably transparent, and the position of the tip of the inserted resin pipe is visually confirmed. What you can do is good.

  The nut, the fixing ring, the retaining member, the main body, and the blocking plate shown in FIGS. 1A to 1E are assembled in the order shown in the drawings. In the state where there is no retaining member, the resin pipe can advance and retreat until the assembled nut and the hole of the main body part are blocked by the blocking plate member with a desired resistance. In the cross section along the long axis direction, the fixing ring accommodating portion and the retaining member accommodating portion are each formed of a substantially trapezoidal portion that is tapered from the boundary line.

Next, regarding the description of the drawings, one aspect of the in-core used in the present invention will be described. One aspect of the in-core used in the present invention includes a head that is inserted into a header used for a branch portion so as to be able to stop water, and a leg that is inserted into a resin pipe inserted into a joint adapter so that the water can be stopped. The head and legs each have a through hole in the center, the outer diameter of the head is larger than the outer diameter of the resin pipe, and the outer diameter of the legs is approximately the same as the inner diameter of the resin pipe In the in-core, the head and legs are integrally formed.

FIG. 2 is a perspective view showing one embodiment of the in-core used in the present invention . As shown in FIG. 2, the in-core 41 is inserted in a header used in a later-described branching section so as to be able to stop water, and inserted into a resin pipe inserted into the joint adapter so as to be able to stop water. Leg 43 to be provided. Each of the head portion 42 and the leg portion 43 has a through hole in the center. The outer diameter of the head 42 is larger than the outer diameter of the resin pipe, the outer diameter of the leg 43 is substantially the same as the inner diameter of the resin pipe, and the head 42 and the leg 43 are integrally formed. Further, at least one O-ring 44 is provided in the head portion 42 to provide a water stop function between the header and the above-described header 43, and at least one other O-ring 45 is provided in the leg portion 43, so that a resin pipe is provided. A water stop function is provided.

  In FIG. 3, the resin pipe 3 is inserted into the joint adapter 2, and the end portion of the resin pipe 3 is connected to the end surface portion 32 by the blocking plate material 61 disposed in close contact with the flat end surface portion 32 of the main body portion 31. It is a figure explaining the condition fixed in the adapter 2 for coupling so that it may become a substantially identical surface. In this state, the resin pipe is inserted into the assembled joint adapter, and the end face of the resin pipe is made substantially flush with the flat end face of the main body by the blocking plate attached in close contact with the end face. Located and fixed.

  That is, as described with reference to FIG. 1, assembly is performed with a fixing ring and a retaining member arranged between the nut 11 and the main body 31, and the blocking plate material is disposed in close contact with the flat end surface of the main body. When the resin pipe 3 is inserted into the joint adapter 2 from the nut 11 side until the front end surface is blocked by the blocking plate material, the front end surface of the resin pipe 3 and the flat end surface portion 32 are substantially flush with each other. In this state, the resin pipe 3 is easily positioned and fixed to the joint adapter 2 with one touch. Since the blocking plate material is formed of a transparent material, it can be easily confirmed visually that the resin pipe is fixed at a desired position as described above.

  Since the resin pipe 3 is fixed so that it cannot be reversed by the retaining member as described above, the resin pipe 3 does not move to the nut 11 side. Depending on the shape of the fixing ring, retaining member, fixing ring accommodating portion, and retaining member accommodating portion, the fixed resin pipe may have some play so that it moves slightly in the major axis direction. good.

  Next, the joint of this invention is demonstrated. One aspect of the joint of the present invention includes a main body portion having a flat end surface portion, each having a through hole portion corresponding to the center, and an opening portion located at one end portion of the cylindrical peripheral edge portion and the peripheral edge portion. And a bottom plate having one surface of the bottom wall disposed in contact with the flat end surface, a nut connected to the main body, and a portion between the main body and the nut. And a retaining member having a tooth portion that prevents progression in the reverse direction, and from the end on the nut side formed by combining the blocking plate material, the main body portion, the retaining member and the nut, the resin pipe is It is inserted irreversibly and inserted into the adapter used for the joint where the tip end surface portion of the inserted pipe is blocked and fixed to the surface of the bottom wall portion of the blocking plate member and the header used for the branching portion so that the water can be stopped. Inserted into the head and fitting adapter and fixed almost on the same plane The resin pipe is provided with a leg portion that is inserted so as to be able to stop water. The joint is provided with an in-core having the same head and legs integrally formed.

FIG. 4 is a diagram illustrating the joint. That is, the in-core is inserted into a resin pipe fixed to the joint adapter while being prevented from proceeding in the reverse direction. As described with reference to FIG. 3, the resin pipe 3 is easily positioned and fixed to the joint adapter 2 including the blocking plate material 61 by one touch from the tip of the resin pipe 3 to the in-core 41. The leg part 43 is inserted. As shown in FIG. 4, since the resin pipe 3 positioned and fixed to the joint adapter 2 does not move to the nut 11 side, the leg 43 of the in-core 41 is inserted into the resin pipe 3 as shown in FIG. The mutual relation between the joint adapter 2 and the resin pipe 3 is not broken. Accordingly, the end surface of the head portion 42 of the in-core 41 on the leg portion 43 side is fixed in close contact with the flat end surface portion 32 of the main body portion 31. In this state, since the O-ring 45 attached to the surface of the leg portion 43 of the in-core 41 performs a water-stop function between the inner surface of the resin pipe 3, the water passing through the pipe 3 is in contact with the in-core 41. There is no leakage from the connection.
As will be described later, an O-ring 44 provided on the head portion 42 of the in-core 41 similarly performs a water stop function with the header.

FIG. 5 is a diagram for explaining a situation where the joint of the present invention in which the resin pipe is fixed at a desired position by the blocking plate described with reference to FIG. 4 is connected to the header. As shown in FIG. 5, the resin pipe is fixed at a desired position in the joint 1 by the blocking plate member 61 attached to the flat end surface portion 32 of the main body portion 31 described with reference to FIG. 4. The joint 1 is attached to a header 50 provided at the branch portion. The head portion 42 of the in-core 41 of the joint 1 is inserted into the header 50, and the O-ring 44 provided on the head portion 42 of the in-core 41 performs a water stop function between the header 50.
Therefore, by adapting the shape of the in-core head to the shape of the corresponding header, it can be easily attached with one touch without impairing the function of the present invention.

  FIG. 6 is a diagram for explaining the release state. In the joint 2 of the present invention, the resin pipe 3 is inserted from the nut 11 side, and the front end surface of the resin pipe 3 is substantially flush with the flat end surface portion 32 of the main body portion 31 by the blocking plate material 61. In the case where the resin pipe is released from the joint from the state in which the leg 43 of the in-core 41 is inserted, the resin pipe 3 is cut at a desired location, and the leg 43 of the in-core 41 is inserted, By pulling out the resin pipe 3 in the direction of the arrow, the blocking plate is separated from the joint adapter in a state where it is fixed between the boundary portion between the leg portion and the head portion of the incore and the tip portion of the resin pipe, Release function works. When releasing, by holding the cylindrical peripheral edge 62 of the blocking plate by hand, the oil content of the hand does not adhere to the O-ring attached to the head of the in-core, thereby preventing the O-ring from deteriorating. it can. Thereafter, the same operation as described above for inserting the resin pipe 3 into the joint adapter 2 may be repeated.

  FIG. 7 is a cross-sectional view illustrating a blocking plate material attached in close contact with the flat end surface portion of the main body portion. FIG. 7A is a cross-sectional view illustrating a state where the resin pipe 3 is inserted into the joint adapter 2. The in-core 41 is shown on the right side of the figure. As shown in FIG. 7A, the blocking plate member 61 is disposed in close contact with the outer peripheral surface of the flat end surface portion 32 of the main body portion. That is, the blocking plate member 61 includes a cylindrical peripheral edge portion 62 and a bottom wall portion 63 formed integrally with an opening 64, and the inner peripheral surface of the cylindrical peripheral edge portion 62 is a flat end surface portion. The bottom wall portion 63 is disposed in close contact with the end surface portion 32 so as to cover the 32 cylindrical outer peripheral surfaces. The distal end portion of the resin pipe 3 is blocked by the bottom wall portion 63 of the blocking plate member 61 and is fixed so that the flat end surface portion 32 and the distal end portion of the resin pipe 3 are substantially flush with each other. In Fig.7 (a), the dimension of an opening part and the internal diameter of resin pipes correspond. The opening may be dimensioned as long as the tip of the inserted resin pipe is blocked and the in-core can be inserted with the tip of the resin pipe fixed.

  FIG. 7B is a cross-sectional view showing a state in which the in-core is inserted into the resin pipe in a state where the resin pipe is fixed to the joint adapter. As described above, the in-core 41 is inserted into the resin pipe 3 in a state where the leading end portion of the resin pipe 3 is blocked by the blocking plate material 61. At this time, the bottom wall portion of the blocking plate member 61 is sandwiched between the end portion of the head portion 42 of the in-core 41 on the leg portion 43 side and the tip portion of the resin pipe 3 that is irreversibly inserted. That is, the blocking plate material is pressed from the opposite direction by the resin pipe and the in-core. As shown in FIG. 7B, the O-ring 45 attached to the surface of the leg portion 43 of the in-core 41 performs a water stop function with the inner surface of the resin pipe 3, so that the inside of the pipe 3 Water that passes through the core does not leak from the connection with the in-core 41.

  FIG.7 (c) is sectional drawing explaining the state which cancels | releases a resin-made pipe from a coupling. When releasing the resin pipe from the joint, the resin pipe 3 is cut at a desired location, and the resin pipe 3 is pulled out in a state where the leg portion 43 of the in-core 41 is inserted. The joint adapter is disconnected and released in a state of being sandwiched and fixed between the boundary portion between the leg portion and the head portion and the tip portion of the resin pipe. When releasing, by holding the cylindrical peripheral edge 62 of the blocking plate by hand, the oil content of the hand does not adhere to the O-ring attached to the head of the in-core, thereby preventing the O-ring from deteriorating. it can.

  Next, a method for inserting and fixing a pipe to the joint of the present invention will be described. As described with reference to FIGS. 2 to 4, one aspect of the method for inserting and fixing a pipe to the joint of the present invention includes a main body portion having a flat end surface portion, a cylindrical peripheral portion and a peripheral portion. A bottom wall portion having an opening located at one end portion, a blocking plate material arranged so that one surface of the bottom wall portion is in contact with the flat end surface portion, a nut connected to the main body portion, and a main body The resin pipe is blocked from the end on the nut side of the adapter for the joint, which is provided between the nut and the nut and has a retaining member having a tooth portion that prevents the reverse progression. Inserted and fixed irreversibly until blocked by the surface of the bottom wall of the plate, and the header inserted into the header used for the branching section and the resin pipe inserted into the fitting adapter In-core, which is integrally provided with legs that are inserted so that water can be stopped, The end surface of the field portion is inserted into the resin pipe until it comes into contact with the bottom wall portion of the blocking plate member is a pipe insertion method of fixing to the joint.

  That is, as described with reference to FIGS. 2 to 4, the pipe can be inserted and fixed to the joint with one touch. In other words, the tooth part of the retaining member protrudes to the flat end face side of the adapter, preventing the resin pipe from moving in the direction opposite to the insertion direction, and inserting it so that it is almost flush with the end part on the main body side. Then, the tip end surface of the fixed resin pipe can be visually recognized. After confirming this state, the in-core leg is inserted from the tip of the resin pipe.

  As described above, according to the present invention, a joint and a joint that can be easily and surely confirmed visually by inserting a resin pipe with a single touch, and have a release function even when the mounting state is not good. It is possible to provide a method for fixing the pipe to the pipe.

FIG. 1 is a diagram illustrating a joint adapter. Fig.1 (a) is the perspective view (left figure) and side view (right figure) of a nut. FIG. 1B is a perspective view (left view) and a side view (right view) of the fixing ring. FIG. 1C is a perspective view (left view) and a side view (right view) of the retaining member. FIG.1 (d) is the perspective view (left figure) and side view (right figure) of a main-body part. FIG.1 (e) is the perspective view (left figure) and side view (right figure) of a prevention board material. FIG. 2 is a perspective view showing one aspect of the in-core. FIG. 3 is a diagram for explaining a situation in which a resin pipe is inserted into the joint adapter and the flat end surface portion 32 of the main body portion 31 and the tip end portion of the resin pipe are fixed to be substantially flush with each other. FIG. 4 is a diagram illustrating the joint. FIG. 5 is a diagram for explaining a situation where the joint of the present invention in which the resin pipe is fixed at a desired position by the blocking plate described with reference to FIG. 4 is connected to the header. FIG. 6 is a diagram for explaining the release state. FIG. 7 is a cross-sectional view illustrating a blocking plate material attached in close contact with the flat end surface portion of the main body portion. FIG. 8 is a side view with a partially cutaway portion for explaining a conventional joint. FIG. 9 is a side view showing a state of the joint.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joint 2 Joint adapter 3 Resin pipe 11 Nut 12 End part 13 in which resin pipe is inserted 13 Connection part 14 Fixing ring 15 Rear end part 16 Front end part 17 Stopping member 18 Vertical surface 19 Teeth part 31 Body part 32 Flat end surface portion 33 Connection portion 34 Retaining member accommodating portion 35 Recess 41 In core 42 Head portion 43 Leg portion 44, 45 O-ring 44
50 Header 61 Blocking plate material 62 Cylindrical peripheral edge 63 Bottom wall 64 Opening

Claims (10)

Each comprises a main body portion having a flat end surface portion with a through-hole portion corresponding to the center, a cylindrical peripheral edge portion, and a bottom wall portion located at one end portion of the peripheral edge portion and having an opening. One surface of the bottom wall portion is disposed in contact with the flat end surface portion, a blocking plate material, a nut connected to the main body portion, and disposed between the main body portion and the nut in the reverse direction. A retaining member having a tooth portion that prevents the progress of the resin pipe, and from the end on the nut side formed by combining the blocking plate material, the main body portion, the retaining member and the nut, a resin pipe An adapter for a joint which is inserted irreversibly and the tip surface portion of the inserted pipe is blocked and fixed to the surface of the bottom wall portion of the blocking plate member;
A header that is inserted into the header used for the branching portion so as to be able to stop water, and a leg portion that is inserted into the joint adapter and fixed to the resin pipe that is fixed substantially on the same surface, so as to be able to stop water. The outer diameter of the head is larger than the outer diameter of the resin pipe, the outer diameter of the leg is substantially the same as the inner diameter of the resin pipe, and the head and the leg are formed integrally. Fitting with an in-core. The main body portion includes the flat end surface portion at one end portion and a connection portion with the nut at the other end portion, and has a retaining member accommodating portion for accommodating the retaining member therein. And
The nut includes a connection portion corresponding to the connection portion of the main body portion at one end portion, and the end portion into which the resin pipe is inserted at the other end portion. The joint according to claim 1.   The connecting portion of the main body portion is formed of a screw thread formed on the outer surface, and the connecting portion of the nut is formed of a corresponding screw groove formed on the inner surface, and the screw thread and the screw groove are engaged with each other. The retaining member accommodating portion has a frustoconical shape, the inner diameter increases toward the boundary portion between the main body portion and the nut, and the retaining member is disposed substantially at the boundary portion between the main body portion and the nut. The joint according to claim 2, wherein the joint is arranged.   The head has at least one O-ring and has a water-stop function with the header, and the leg has at least one other O-ring and the resin pipe. The joint according to claim 3, which has a water stop function. Each comprises a main body portion having a flat end surface portion with a through-hole portion corresponding to the center, a cylindrical peripheral edge portion, and a bottom wall portion located at one end portion of the peripheral edge portion and having an opening. One surface of the bottom wall portion is disposed in contact with the flat end surface portion, a blocking plate material, a nut connected to the main body portion, and disposed between the main body portion and the nut in the reverse direction. A fitting adapter comprising a retaining member having a tooth portion for preventing the progression of
A resin pipe is irreversibly inserted from the nut-side end of the adapter formed by combining the blocking plate material, the main body, the retaining member, and the nut, and the tip of the inserted pipe An adapter for a joint in which a surface portion is blocked and fixed to a surface of a bottom wall portion of the blocking plate member. A fixing ring for fixing the retaining member;
The main body portion includes the flat end surface portion at one end portion and a connection portion with the nut at the other end portion, and has a retaining member accommodating portion for accommodating the retaining member therein. And
The nut includes a connection portion corresponding to the connection portion of the main body portion at one end portion, and the end portion into which the resin pipe is inserted at the other end portion. The adapter for a joint according to claim 5.   The connecting portion of the main body portion is formed of a screw thread formed on the outer surface, and the connecting portion of the nut is formed of a corresponding screw groove formed on the inner surface, and the screw thread and the screw groove are engaged with each other. The retaining member accommodating portion has a frustoconical shape, the inner diameter increases toward the boundary portion between the main body portion and the nut, and the retaining member and The joint adapter according to claim 6, wherein the fixing ring is arranged. A main body portion having a flat end surface portion; a cylindrical peripheral edge portion; and a bottom wall portion having an opening located at one end portion of the peripheral edge portion, wherein one surface of the bottom wall portion is the flat surface. A retaining member having a blocking plate disposed in contact with the end surface portion, a nut connected to the main body, and a tooth portion disposed between the main body and the nut to prevent progression in the reverse direction. From the end on the nut side of the joint adapter provided with a resin pipe, irreversibly inserted and fixed until the tip surface is blocked by the surface of the bottom wall portion of the blocking plate material,
An in-core that integrally includes a head used for a branching part so as to be able to stop water and a leg part inserted so as to be able to stop water into the resin pipe inserted into the joint adapter. Is inserted into the resin pipe until the end surface of the boundary portion between the leg portion and the head is in contact with the bottom wall portion of the blocking plate member. The tooth portion of the retaining member protrudes to the flat end surface side of the adapter and prevents the resin pipe from proceeding in the direction opposite to the insertion direction,
9. The joint according to claim 8 , wherein a front end surface of the resin pipe that is blocked and fixed to a surface of the bottom wall portion of the blocking plate member is visible through the bottom wall portion of the blocking plate member. Pipe fixing method. A main body portion having a flat end surface portion; a cylindrical peripheral edge portion; and a bottom wall portion having an opening located at one end portion of the peripheral edge portion, wherein one surface of the bottom wall portion is the flat surface. A retaining member having a blocking plate disposed in contact with the end surface portion, a nut connected to the main body, and a tooth portion disposed between the main body and the nut to prevent progression in the reverse direction. From the end on the nut side of the joint adapter provided with a resin pipe, irreversibly inserted and fixed until the tip surface is blocked by the surface of the bottom wall portion of the blocking plate material,
The resin pipe inserted and fixed irreversibly in the joint adapter is further pushed in the insertion direction,
Cutting near the nut side end of the resin pipe,
Removing the resin pipe from the fitting adapter;
Release method of resin pipe from fitting adapter.

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