JP2011214692A - Sealing tool and joint connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing tool which prohibits a joint from removing from a joint connection configured by connecting a plurality of joints and at the same time can distinguish whether the joints are removed.SOLUTION: The sealing tool 50 is used for a connection type header 12 which is configured by connecting a header base body 14 having a main pipe portion 16, the insertion portion 32 provided therein and a retention release means which retains a pipe portion 26 in an insertion portion 32 when a pipe portion 26 of the main pipe portion 16 disposed within the insertion portion 32 and connected to the insertion portion 32 is inserted and moreover which releases the retention of the pipe portion 26 when a pressure is applied through a clearance between the insertion portion 32 and the pipe portion 26 connected with the insertion portion 32. The sealing tool 50 makes it possible to prohibit the header base body 14 from being removed from the connection type header 12 and to distinguish removal of the joint because it is provided with a breakable annulus 50A which is disposed on the pipe portion 26 so as to seal the clearance between the insertion portion 32 and the pipe portion 26 connected thereto it and a fixed means which fixes the annulus 50A to the pipe portion 26 connected to the insertion portion 32.

Description

  The present invention relates to a sealing tool and a joint connector using the sealing tool.

  Conventionally, a connection type header configured by connecting a plurality of joints has been used for water supply / hot water supply in a house (for example, Patent Document 1). The joint used for the connection type header is provided with an insertion part at one end of the main pipe part. The other end portion of the main pipe portion of the joint connected to the joint is inserted into the joint insertion portion.

  In the insertion portion, a hook is hooked on the inserted main pipe portion to hold the other end portion of the inserted main pipe portion in the insertion portion, and a seal is provided between the inserted main pipe portion and the insertion portion. An O-ring is provided. When pulling out the other end of the main pipe part inserted into the insertion part from the insertion part, insert a dedicated jig into the gap between the insertion part and the inserted main pipe part, and bring it closer to the inlet side of the insertion part than the holding ring. The hook of the claw part of the holding ring to the inserted main pipe part is released by pressing the arranged release ring to the back side of the insertion part. The joint can be removed from the connection type header by pulling out the main pipe portion inserted in this state from the insertion portion. On the other hand, Patent Literature 2 and Patent Literature 3 disclose techniques for suppressing an erroneous operation of the release ring.

JP 2009-250435 A JP 2006-9997 A JP 2007-120671 A

  By the way, the connection type header connects a plurality of joints at a factory and is shipped after an airtight test is performed. If the joint is removed at the construction site or the like, foreign matter may enter the insertion section or damage the seal member (O-ring). If the joint is reconnected in this state, the sealing performance may be reduced. .

  However, it has been difficult to discriminate whether or not the connection type header installed at the construction site or the like is one in which the joint is removed and then connected again. Moreover, in patent documents 1-3, it cannot discriminate | determine about having connected once after removing a joint once.

  The present invention has been made to solve the above-mentioned problems, and seals the removal of a joint from a joint assembly formed by connecting a plurality of joints, and can determine the removal of the joint, It is another object of the present invention to provide a joint assembly using the sealing tool.

  The sealing tool according to claim 1 is inserted into the cylindrical body portion, an insertion portion provided at one end portion of the cylindrical body portion, and the other end portion of the cylindrical body portion disposed in the insertion portion and connected to the insertion portion. Then, the other end portion is held in the insertion portion, and when pressed through a gap between the insertion portion and the cylindrical portion connected to the insertion portion, the other end portion held in the insertion portion A sealing device for use in a joint assembly formed by connecting a joint having a release mechanism for releasing the holding, and sealing the removal of the joint, the cylinder connected to the insertion portion and the insertion portion The breakable return body disposed on the cylindrical body portion connected to the insertion portion and the cylindrical body portion connected to the insertion portion are fixed to the cylindrical portion connected to the insertion portion so as to seal a gap between the insertion portion and the insertion portion. Fixing means.

  According to the sealing tool of the first aspect, the gap between the insertion portion and the cylindrical portion connected to the insertion portion is sealed by the return body. Thereby, removal of the coupling from the coupling body can be sealed.

On the other hand, when removing the joint from the joint coupling body, the return body is destroyed, and the gap between the insertion portion and the cylindrical body portion connected to the insertion portion is opened. After that, for example, by using a dedicated jig or the like, the cylinder connected to the insertion portion is pressed by pressing the holding release means to the back side of the insertion portion through the gap between the insertion portion and the cylindrical portion connected to the insertion portion. The holding of the body part is released.
And a joint is removed from a joint coupling body by pulling out the said cylinder part from an insertion part.

  Here, when the joint is removed from the joint connector, the return body is destroyed and detached from the joint, so that it can be reliably determined that the joint has been removed from the joint connector.

  The sealing device according to claim 2 is the sealing device according to claim 1, wherein a cut is formed in the return body.

  According to the sealing tool of claim 2, since the cut is formed in the return body, the return body can be easily destroyed.

  A sealing tool according to a third aspect is the sealing tool according to the second aspect, wherein the cut is a groove formed in an outer peripheral portion of the return body and extending in the width direction.

  According to the sealing tool of claim 3, since the slit constitutes a groove extending in the width direction formed in the outer peripheral portion of the return body, the front end can be used without destroying the return body without using a dedicated tool or the like. Can be easily broken by inserting the tip of a flat tool such as a flat-blade screwdriver into the groove. That is, the return body can be easily broken with a general tool without using a dedicated tool or the like.

  The sealing tool according to a fourth aspect is the sealing tool according to the second aspect, wherein the cut is a slit penetrating in the thickness direction formed at an end portion in the width direction of the return body.

  According to the sealing tool of claim 4, since the slit constitutes a slit penetrating in the thickness direction formed at the end portion in the width direction of the return body, for example, when a return body is broken, for example, a flathead screwdriver By inserting the into the slit and widening the slit, the return body can be easily destroyed.

  The sealing device according to claim 5 is the sealing device according to any one of claims 1 to 4, wherein the fixing means extends in a width direction from an end portion in a width direction of the return body and elastically deforms in a radial direction. A plurality of possible extending portions, and an engaging claw portion that protrudes radially inward from the distal end portion of the extending portion and hooks into an engaging concave portion provided on an outer peripheral portion of a cylindrical body portion connected to the insertion portion. ,have.

  In the sealing tool according to claim 5, by inserting the cylindrical part connected to the insertion part into the return body, the engaging claw part rides on the outer peripheral surface of the cylindrical part, and the extending part spreads radially outward. It is elastically deformed. When the engagement claw portion reaches the engagement recess, the engagement claw portion enters the engagement recess, and the elastic deformation of the extension portion is restored, and the engagement claw portion is caught by the engagement recess. Thereby, the attachment state of the cylinder part connected with an insertion part and a return body can be strengthened by simple operation of inserting the cylinder part connected with an insertion part in a return body.

  The sealing device according to claim 6 is the sealing device according to any one of claims 1 to 4, wherein the fixing means protrudes radially inward from an inner peripheral portion of the return body and is connected to the insertion portion. And an engaging convex portion that fits into an engaging concave portion provided on the outer peripheral portion of the cylindrical body portion.

  In the sealing tool according to claim 6, since the engaging convex portion of the return body is fitted into the engaging concave portion of the cylindrical portion connected to the insertion portion, the cylindrical portion connected to the insertion portion and the return body The mounting state can be strengthened.

  The sealing device according to claim 7 is the sealing device according to any one of claims 1 to 4, wherein the fixing means is provided on an inner peripheral portion of the return body and connected to the insertion portion. And an engaging recess that fits into an engaging protrusion that protrudes toward the outer periphery.

  In the sealing tool according to claim 7, since the engaging convex part of the cylindrical body part connected to the insertion part is fitted into the engaging concave part of the return body, the cylindrical part connected to the insertion part and the return body The mounting state can be strengthened.

  As for the joint coupling body of Claim 8, the sealing tool of any one of Claims 1-7 is used.

  In the joint coupling body according to claim 8, since the sealing tool according to any one of claims 1 to 7 is used, removal of the joint from the joint coupling body can be sealed, and It can be reliably determined that the joint has been removed.

  As described above, according to the sealing tool of the present invention, it is possible to seal the removal of the joint from the joint assembly formed by connecting a plurality of joints, and to determine the removal of the joint. According to the joint connector of the present invention, it is possible to seal the removal of the joint by the sealing tool and determine the removal of the joint.

It is the top view seen from the upper part of the connection type header of 1st Embodiment. It is the partially broken top view seen from the upper direction of the header base | substrate of 1st Embodiment. (A) It is a side view of the sealing tool of 1st Embodiment. (B) It is the top view seen from the engagement nail | claw side of the sealing tool of 1st Embodiment. It is the partially broken top view seen from the upper part of the connection type header which shows the connection state of the header base | substrate of 1st Embodiment. It is the partially broken top view seen from the upper part of the connection type header which shows the state which removed the sealing tool from the connection type header of 1st Embodiment. It is the partially broken top view seen from the upper part of the connection type header which shows the state which inserted the exclusive jig in the connection type header of 1st Embodiment. (A) It is a side view of the modification of the sealing tool of 1st Embodiment. (B) It is the top view seen from the engagement nail | claw side of the sealing tool of a modification. (A) It is a side view of the sealing tool of 2nd Embodiment. (B) It is a top view of the sealing tool of 2nd Embodiment. (C) It is sectional drawing which supports the fitting state of the engagement convex part and engagement circumferential groove of the sealing tool of 2nd Embodiment.

Hereinafter, the sealing tool and joint coupling body of 1st Embodiment of this invention are demonstrated according to drawing.
[First Embodiment]
FIG. 1 shows a connecting header 12 as an example of a sealing tool 50 and a joint connector according to the first embodiment. The connection type header 12 is configured by connecting a plurality of header bases 14 described below. The header base 14 is an example of a joint.

  As shown in FIG. 2, the header base 14 is integrally provided with a branch pipe connecting portion 18 for connecting a branch pipe to a main pipe portion 16 as a cylindrical body portion. A straight flow path 20 is provided inside the main pipe portion 16, and a rising flow path 22 is provided inside the branch pipe connection portion 18.

  One end portion of the main pipe portion 16 in the cylinder axis direction is a pipe portion 26 having the same inner and outer diameter as a resin pipe 24 described later. The pipe portion 26 is formed with a circumferential groove 28 extending in the circumferential direction in which a claw portion 34A of a lock ring 34 described later is hooked at an intermediate portion in the cylinder axis direction.

A pipe connection portion 30 is configured at the other end portion of the main pipe portion 16 in the cylinder axis direction.
The pipe connection portion 30 includes an insertion portion 32, a lock ring 34 as a holding member that holds the pipe portion 26 that is disposed in the insertion portion 32 and is inserted into and connected to the insertion portion 32, and the insertion. Locked when pressed to the back side of the insertion portion 32 through the gap between the insertion portion 32 and the pipe portion 26 that is disposed in the insertion portion 32 and is located on the inlet side of the insertion portion 32 relative to the lock ring 34. A release ring 36 serving as a release member for releasing the holding state of the pipe portion 26 by the ring 34 and a pipe portion 26 that is disposed in the insertion portion 32 and is located in the insertion portion 32 with respect to the lock ring 34. Thus, the O-ring 38 that seals between the inserted pipe portion 26 and the insertion portion 32 is included. The holding member (lock ring 34) and the release member (release ring 36) are examples of the holding release unit.

  The inner peripheral surface of the insertion portion 32 is constituted by the outer peripheral surface of an inner cylinder 40 made of, for example, a black colored synthetic resin that is inserted into the pipe portion 26 connected to the insertion portion 32. A plurality of circumferential grooves 42 are formed on the outer peripheral surface of the inner cylinder 40 (in this embodiment, two locations), and the aforementioned O-rings 38 are fitted into these circumferential grooves 42, respectively.

  The outer peripheral surface of the insertion portion 32 includes an inner peripheral surface of a transparent synthetic resin outer tube 44 disposed on the outer peripheral side of the inner tube 40 and a cylindrical cap 46 attached to the tip of the outer tube 44. It is comprised by the internal peripheral surface.

  The lock ring 34 has a V-shaped cross section and is disposed on the distal end side of the outer cylinder 44. Further, the lock ring 34 is prevented from being pulled out by the cap 46. Inside the cap 46, a release ring 36 for releasing the catch of the claw portion 34A (inner peripheral side end portion) of the lock ring 34 that is caught in the engagement circumferential groove 58 of the inserted pipe portion 26 is mounted. .

  When the pipe portion 26 of the header base 14 connected to the insertion portion 32 of the header base 14 is inserted, the inner peripheral end of the lock ring 34 is inserted into the circumferential groove 28 of the inserted pipe 26. It catches and prevents the inserted pipe part 26 from coming off. On the other hand, the O-ring 38 is in close contact with the inner peripheral surface of the pipe portion 26 inserted into the insertion portion 32 to perform sealing (so-called inner surface sealing).

  Further, when the release ring 36 is pushed into the back side of the insertion portion 32 with a dedicated jig 39 (see FIG. 6) and the lock ring 34 is pressed, the tapered portion of the release ring 36 moves the inclined surface on the inner peripheral side of the lock ring 34. Then, the inner diameter of the lock ring 34 is enlarged, and the claw portion 34A is retracted from the circumferential groove 28 of the inserted pipe portion 26. As a result, the hook between the claw portion 34A of the lock ring 34 and the circumferential groove 28 of the inserted pipe portion 26 is released, and the inserted pipe portion 26 can be pulled out.

  An engagement circumferential groove 58 is formed in the main pipe portion 16 as an engagement recess to be engaged with an engagement claw portion 56 of a sealing tool 50 described later on the branch pipe connection portion 18 side of the circumferential groove 28. Specifically, the engagement circumferential groove 58 is formed in the outer cylinder 44.

  As shown in FIGS. 1 and 4, a sealing tool 50 is attached to the main pipe portion 16 of the header base 14. The sealing tool 50 is disposed between the adjacent header bases 14 and seals a gap between the insertion portion 32 and the pipe portion 26 inserted and connected to the insertion portion 32.

  The sealing tool 50 will be described in detail. As shown in FIG. 3, the sealing tool 50 includes a resin return body 50 </ b> A formed in an annular shape. A plurality of cuts (hereinafter referred to as grooves 52) extending in the direction intersecting the circumferential direction (in the width direction in the present embodiment) are formed in the outer peripheral portion of the return body 50 </ b> A at intervals in the circumferential direction. Yes. The groove 52 may be formed at only one location. The thickness of the groove bottom portion of the groove 52 is set to be equal to or less than half the thickness of the return body 50A. Thereby, return body 50A can be destroyed easily.

  Further, an extending portion 54 that extends from the end portion in the width direction and elastically deforms radially outward is formed at the end portion in the width direction of the return body 50A. An engaging claw portion 56 that protrudes inward in the radial direction and is hooked by the engaging circumferential groove 58 is formed at the distal end portion of the extending portion 54. In addition, the extension part 54 and the engaging claw part 56 of this embodiment are examples of a fixing means.

  As shown in FIG. 2, the structure of the branch pipe connection portion 18 is the same as the structure of the pipe connection portion 30. Therefore, the detailed description of the branch pipe connecting portion 18 is omitted. A resin pipe 24 is connected to the branch pipe connecting portion 18.

(Action)
According to the connection type header 12, the gap between the insertion portion 32 and the pipe portion 26 inserted into the insertion portion 32 is sealed by the return body 50 </ b> A of the sealing tool 50. Thereby, removal of the header base body 14 from the connection type header 12 can be sealed.

  On the other hand, when removing the header base body 14 from the connection type header 12, the return body 50A is destroyed (see FIG. 5), and the gap between the insertion portion 32 and the pipe portion 26 inserted into the insertion portion 32 is opened. After that, for example, by using a dedicated jig 59, the release ring 36 is pressed toward the back side of the insertion portion 32 through the gap between the insertion portion 32 and the pipe portion 26 inserted into the insertion portion 32. The claw portion 34A is retracted from the circumferential groove 28 of the inserted pipe portion 26, and the holding of the inserted pipe portion 26 is released (see FIG. 6). Then, by pulling out the pipe portion 26 of the header base 14 from the insertion portion 32, the header base 14 is removed from the connection type header 12.

  Here, when the header base 14 is removed from the connection type header 12, the return body 50 </ b> A is destroyed and detached from the header base 14, so that it is ensured that the header base 14 is removed from the connection type header 12. Can be determined.

  Moreover, since the return body 50A has the groove | channel 52 formed in the outer peripheral part, it can be destroyed easily. Further, since the groove 52 is formed along the width direction of the return body 50A, a tool having a flat tip, for example, the tip of a minus driver, is used without using a dedicated tool or the like when breaking the return body 50A. It can be broken by being inserted into the groove 52. Thereby, the sealing tool 50 can be easily destroyed with a general tool without using a dedicated tool or the like.

  Further, by inserting the pipe part 26 of the header base 14 into the sealing tool 50, the engaging claw part 56 of the sealing tool 50 rides on the pipe part 26 of the header base 14, and the extending part 54 spreads radially outward. It is elastically deformed. When the engaging claw 56 reaches the engaging circumferential groove 58, the engaging claw 56 enters the engaging circumferential groove 58, and the elastic deformation of the extending portion 54 is restored, and the engaging claw 56 is engaged with the engaging circumferential groove 58. Get caught in 58. Thereby, the attachment state of the header base 14 and the sealing tool 50 can be strengthened by a simple operation of inserting the pipe portion 26 of the header base 14 into the sealing tool 50.

  As described above, since the sealing tool 50 determines that the header base body 14 has been removed from the connection type header 12, for example, when water leaks from the connection type header 12, water leakage from which header base body 14 occurs. It can be identified whether it has occurred.

  In 1st Embodiment, although it has set it as the structure which uses the sealing tool 50 provided with the groove | channel 52 in the outer peripheral part of the return body 50A for the connection type header 12, this invention is not restricted to this structure, The width direction edge part of the return body 60A is used. It is good also as a structure which uses the sealing tool 60 provided with the slit 62 penetrated in the thickness direction for the connection type header 12. FIG. 7A and 7B, the sealing tool 60 is a modification of the sealing tool 50 of the first embodiment, and the description of the same configuration as the sealing tool 50 is omitted. .

  As shown in FIGS. 7A and 7B, a plurality of slits 62 penetrating in the thickness direction of the sealing device 60 are formed at intervals in the circumferential direction at the end of the sealing device 60 in the width direction. Has been. The slit 62 may be formed at only one location. The width of the slit 62 is at least half the width of the sealing tool 60. Thereby, the sealing tool 60 can be destroyed easily.

  According to this sealing tool 60, when removing the sealing tool 60, the sealing tool 60 can be easily broken by inserting a slotted screwdriver or the like into the slit 62 and opening the slit 62, for example.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment, and the description is abbreviate | omitted.

  As shown in FIGS. 8A and 8B, the sealing tool 70 includes a resin return body 70A formed in an annular shape. In this return body 70A, a plurality of slits 62 penetrating in the thickness direction at the end in the width direction are formed at intervals in the circumferential direction.

  Further, as shown in FIG. 8A, an engagement convex portion 72 that protrudes radially inward is formed on the inner peripheral portion of the sealing tool 70. In addition, although the engaging convex part 72 of this embodiment is made into the protruding item | line formed continuously along the inner periphery of the sealing tool 70, this invention is not limited to this structure, The sealing tool 70's It is good also as a structure by which the some engagement convex part 72 is formed in the inner peripheral part along the circumferential direction. The engaging convex portion 72 is curved inward in the radial direction.

  On the other hand, an engagement circumferential groove 74 extending in the circumferential direction in which the above-described engagement convex portion 72 is fitted is formed on the main pipe portion 16 closer to the branch pipe connection portion 18 than the circumferential groove 28. Specifically, the engagement circumferential groove 58 is formed in the outer cylinder 44. In addition, the engagement convex part 72 of this embodiment is an example of a fixing means.

  Here, since the engaging convex part 72 of the sealing tool 70 is fitted in the engaging circumferential groove 74 of the main pipe part 16 and the sealing tool 70 is attached to the main pipe part 16, the sealing tool 70, the header base body 14, The mounting state can be made stronger than in the first embodiment.

  In addition, in 2nd Embodiment, although it was set as the structure which forms the engagement convex part 72 in the sealing tool 70, and forms the engagement circumferential groove 74 in the main pipe part 16, this invention is not limited to this structure, A sealing tool The engagement circumferential groove 74 may be formed in the inner peripheral portion of the 70, and the engagement convex portion 72 may be formed in the main pipe portion 16. The engagement circumferential groove 74 at this time is an example of a fixing means.

  In the above-mentioned embodiment, it was set as the structure which uses the sealing tool 50, 60, 70 of this invention for the connection type header 12, However, This invention is not limited to this structure, For example, the branch pipe connection part 18 of the header base | substrate 14 is used. It is good also as a structure used for the joint coupling body which connected the straight type or L-shaped coupling (it has the main pipe part 16, the pipe part 26, the insertion part 32, the lock ring, the release ring 36, etc.) except the structure.

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

12 Connection type header (joint joint)
14 Header base (joint)
16 Main pipe (cylinder)
26 Pipe (other end)
32 Insertion part 34 Lock ring (holding release means)
36 Release ring (holding release means)
50 Sealing tool 50A Annulus 52 Groove 54 Extension part (fixing means)
56 engaging claw (fixing means)
58 Engaging circumferential groove (engaging recess)
60 sealing tool 60A return body 62 slit 70 sealing tool 72 engaging convex part (fixing means)
74 Engaging circumferential groove (engaging recess)

Claims (8)

When the other end portion of the cylindrical body portion, the insertion portion provided at one end portion of the cylindrical body portion, and the cylindrical body portion disposed in the insertion portion and connected to the insertion portion is inserted, the other end portion is Holding release means for releasing the holding of the other end held in the insertion portion when held in the insertion portion and pressed through a gap between the insertion portion and the cylindrical portion connected to the insertion portion; A sealing device used in a joint assembly constituted by connecting joints having the above, and sealing the removal of the joint,
A destructible return body disposed on the cylindrical portion connected to the insertion portion so as to seal a gap between the insertion portion and the cylindrical portion connected to the insertion portion;
Fixing means for fixing the return body to the cylindrical body portion connected to the insertion portion;
Sealing tool with.   The sealing tool according to claim 1, wherein a cut is formed in the return body.   The sealing tool according to claim 2, wherein the cut is a groove formed in an outer peripheral portion of the return body and extending in the width direction.   The sealing tool according to claim 2, wherein the slit is a slit formed in an end portion in the width direction of the return body and penetrating in the thickness direction.   The fixing means includes a plurality of extending portions that extend in the width direction from the end portions in the width direction of the return body and are elastically deformable in the radial direction, and project radially inward from the distal end portions of the extending portions. The sealing claw of any one of Claims 1-4 which has an engaging claw part hooked in the engaging recessed part provided in the outer peripheral part of the cylinder part connected with a part.   The fixing means includes an engaging convex portion that protrudes radially inward from the inner peripheral portion of the return body and fits into an engaging concave portion provided in an outer peripheral portion of a cylindrical body portion that is coupled to the insertion portion. The sealing tool of any one of Claims 1-4.   The fixing means is provided in an inner peripheral portion of the return body, and an engagement concave portion into which an engagement convex portion protruding to the outer peripheral side provided in the outer peripheral portion of the cylindrical body portion connected to the insertion portion is fitted, The sealing tool according to any one of claims 1 to 4, further comprising:   The joint coupling body in which the sealing tool according to any one of claims 1 to 7 is used.

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