JP2005188705A - Pipe detaching tool for pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe detaching tool for a pipe joint allowing easy detachment of a pipe connected to the pipe joint formed not to project a part operated when detaching the pipe, from a body. <P>SOLUTION: When separating the pipe joint 12 and the pipe 24 from each other, the pipe detaching tool 10 is fitted to the pipe 24 and slid along the axial direction to push a rib 68 into a sleeve 16. A pressing part 54 of an engagement release member 20 pressed by the rib 68 thereby presses a claw part 52A of a lock ring 52, and the tip of the claw part 52A is separated from the outer peripheral surface of the pipe 24. When the pipe 24 is pulled out in a state of the tip of the claw part 52A being spaced from the outer peripheral surface of the pipe 24 (i.e., in a state of pressing the pipe detaching tool 10), the pipe 24 and the pipe joint 12 can be easily separated from each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pipe removing jig for a pipe joint, and more particularly, to a pipe joint that can be connected to a pipe by simply pushing the pipe into a hole, and used when removing the connected pipe from the pipe joint. The present invention relates to a pipe removing jig for joints.

  When connecting pipes to each other, pipe joints are generally used.

Various types of pipe joints have been proposed, but in recent years, a so-called one-touch connector type pipe joint that completes the connection of the pipe simply by pushing the pipe into the hole, for example, Patent Document 1 The pipe joint described in (1) is preferred because of its ease of workability.
Japanese Utility Model Publication No.59-47190

  In the pipe joint described in Patent Document 1, when removing the pipe after connection, the pipe can be detached by pressing the flange of the collet protruding from the pipe joint main body. In some cases, the tube may come off due to being pressed by mistake.

  In view of this, a pipe joint that does not protrude from the main body when operating the pipe is considered.

  However, if the portion to be operated when removing the tube is not projected from the main body, it cannot be operated by hand.

  Although it is conceivable to press the operating portion by pushing the tip of a flathead screwdriver or the like, there is a risk of damaging the pipe joint.

  The present invention has been made to solve the above-mentioned problem, and it is possible to easily remove a pipe connected to a pipe joint that does not project a portion operated when the pipe is detached from the main body. The purpose is to provide a jig.

  The invention described in claim 1 is provided with a hole for inserting a pipe and an inner side of the hole, and allows insertion of a pipe having a constant diameter, and a force in the extraction direction acts on the inserted pipe. Sometimes the tip part bites into the outer peripheral surface of the tube to prevent the tube from being pulled out, and the elastically deformable claw part is disposed inside the hole and slides in the axial direction to contact the claw part. A disengagement member that separates the tip of the claw portion from the outer peripheral surface of the pipe, and a pipe removal jig for a pipe joint used in a pipe joint, having a diameter larger than the outer diameter of the pipe A main body formed in the main body, and a groove portion formed in the main body, into which the tube can be inserted, and provided on a side surface of the main body. The disengagement member that faces the disengagement member and can be inserted into the hole when It is characterized by having a 圧凸 unit.

  Next, the operation of the pipe removing jig for the pipe joint according to claim 1 will be described.

  First, the pipe is inserted into the groove so that the pipe connected to the pipe joint comes into contact with the bottom of the groove. At this time, the engagement release member pressing convex portion is directed in advance to the pipe joint side.

  Next, the jig is slid toward the pipe joint while the pipe is in contact with the bottom, and the disengagement member pressing convex part is inserted into the hole of the pipe joint.

  Further, by pushing the engagement release member pressing convex portion into the hole, the engagement release member pressing convex portion presses the engagement release member of the pipe joint, the engagement release member is separated from the pipe, and the pipe is detached. Can be performed.

  According to a second aspect of the present invention, in the pipe detachment jig of the pipe joint according to the first aspect, the disengagement member pressing convex portion is an arc-shaped rib, has a certain height, and the pipe It is characterized by having a length of 1/8 or more of the outer peripheral length.

  Next, the operation of the pipe removing jig for the pipe joint according to claim 2 will be described.

  When the disengagement member has a ring shape, even if one point is pressed, the ring shape may be inclined in the pipe joint, and the pipe may not be detached.

  Therefore, it is necessary to bring a thing of a certain length into contact with the disengagement member so that the disengagement member does not tilt when pressed.

  Therefore, the disengagement member pressing convex portion is an arc-shaped rib, has a certain height, and has a length of 1/8 or more of the outer peripheral length of the tube.

  If the length of the disengagement member pressing convex portion is less than 1/8 of the outer peripheral length of the pipe, the length becomes close to one point, and the pipe may not be detached from the pipe joint.

  In addition, since the jig has a width of a groove that allows the tube to be inserted, the length of the engaging release member pressing convex portion cannot exceed about ½ of the outer peripheral length of the tube.

  According to a third aspect of the present invention, in the pipe detachment jig of the pipe joint according to the first aspect, two or more engagement release member pressing protrusions are provided at an interval, and each has the same height. It is characterized by being set to.

  Next, the operation of the pipe removing jig for the pipe joint according to claim 3 will be described.

  Two or more engagement release member pressing protrusions are provided at an interval, and each height is set to be the same. Therefore, when the engagement release member is pressed, the engagement release member does not tilt. Can be. The engagement release member pressing convex portion is more preferably three or more points.

  The invention described in claim 4 is provided with a hole into which the pipe is inserted and an inner side of the hole, and allows insertion of a pipe having a constant diameter, and a force in the extraction direction acts on the inserted pipe. Sometimes the tip part bites into the outer peripheral surface of the tube to prevent the tube from being pulled out, and the elastically deformable claw part is disposed inside the hole and slides in the axial direction to contact the claw part. A disengagement member that separates the tip of the claw portion from the outer peripheral surface of the pipe, and a pipe removal jig for a pipe joint used in a pipe joint, having a diameter larger than the outer diameter of the pipe A main body formed in the main body, and an opening formed in the main body, into which the tube can be inserted, and provided on a side surface of the main body, facing the disengagement member when the tube is inserted into the opening, And an engagement release member pressing convex portion that can be inserted into the hole. To have.

  Next, the operation of the pipe removing jig for the pipe joint according to claim 4 will be described.

  First, the pipe connected to the pipe joint is advanced into the opening of the main body. At this time, the engagement release member pressing convex portion is directed in advance to the pipe joint side.

  Next, the jig is slid toward the pipe joint, and the disengagement member pressing convex portion is inserted into the hole of the pipe joint.

  Further, by pushing the engagement release member pressing convex portion into the hole, the engagement release member pressing convex portion presses the engagement release member of the pipe joint, the engagement release member is separated from the pipe, and the pipe is detached. Can be performed.

  According to a fifth aspect of the present invention, in the pipe detachment jig of the pipe joint according to the fourth aspect, the disengaging member pressing convex portion is a circular rib having a constant height. Yes.

  Next, the operation of the pipe removing jig for the pipe joint according to claim 5 will be described.

  Since the engagement release member pressing convex portion is a circular rib having a constant height, the engagement release member can be pressed without being inclined.

  According to a sixth aspect of the present invention, in the pipe detachment jig of the pipe joint according to the fourth aspect, two or more engagement release member pressing protrusions are provided at an interval, and each has the same height. It is characterized by being set to.

  Next, the operation of the pipe removing jig for the pipe joint according to claim 6 will be described.

  Two or more engagement release member pressing protrusions are provided at an interval, and each height is set to be the same. Therefore, when the engagement release member is pressed, the engagement release member does not tilt. Can be. The engagement release member pressing convex portion is more preferably three or more points.

  As described above, according to the present invention, there is an excellent effect that the pipe connected to the pipe joint that does not project the portion operated when the pipe is detached from the main body can be easily detached.

  Hereinafter, a tube removal jig 10 according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 2 is a cross-sectional view of a pipe joint 12 that uses the pipe removal jig 10 of the present embodiment.

  The pipe joint 12 includes a main body 14, a sleeve 16, an intermediate ring 18, a disengagement member 20, a lock ring 52, and an O-ring 22.

  The main body 14, the sleeve 16, the intermediate ring 18, and the disengagement member 20 can be formed of, for example, synthetic resin.

  The main body 14 is formed in a cylindrical shape, and the arrow R direction side is a core portion 26 having a constant outer circumference diameter inserted into the tube 24.

  A protruding portion 28 having a diameter larger than that of the core portion 26 is formed on the arrow L direction side of the core portion 26, and a slightly smaller diameter than the protruding portion 28 on the arrow L direction side of the protruding portion 28. A small intermediate ring holding portion 30 is formed.

  Further, the main body 14 is formed with a hexagonal portion 32 for hooking a spanner on the side of the intermediate ring holding portion 30 in the arrow L direction, and a male screw 34 is formed on the side of the hexagonal portion 32 in the arrow L direction.

  A pair of grooves 36 are formed on the outer periphery of the core portion 26, and the O-ring 22 is fitted in each groove 36.

  When the core portion 26 is inserted into a tube 24 described later, the O-ring 22 is brought into close contact with the inner wall surface of the tube 24 and seals between the tube 24 and the main body 14 (see FIG. 5).

  The intermediate ring 18 is disposed on the hexagonal portion 32 on the arrow R direction side.

  In the intermediate ring 18, a tube insertion portion 38 having a constant diameter into which the tube 24 can be inserted is formed at a portion facing the core portion 26.

  The intermediate ring 18 has an engagement portion 40 formed on the tube insertion portion 38 in the direction of the arrow L, slightly smaller in diameter than the projection 28 and slightly larger in diameter than the intermediate ring holding portion 30 of the main body 14 described above. Is formed.

  The intermediate ring 18 is held by the intermediate ring 18 by the engaging portion 40 engaging with the intermediate ring holding portion 30 of the main body 14.

  The sleeve 16 is disposed on the outer peripheral side of the core portion 26 and on the arrow R direction side of the intermediate ring 18.

  The intermediate ring 18 is formed with a sleeve engaging portion 42 having an uneven shape on the outer peripheral surface on the arrow R direction side, and this sleeve engaging portion 42 is formed on the inner peripheral surface on the arrow L direction side of the sleeve 16. It is inserted and fitted into the concavo-convex engaged portion 44 thus formed.

  The intermediate ring 18 has an outer peripheral surface near the end on the arrow R direction side and an inner peripheral surface formed in a tapered shape.

  The sleeve 16 has an inclined portion 46 whose inner diameter decreases in the direction of the arrow R in the arrow R direction of the engaged portion 44, and on the side of the inclined portion 46 in the arrow R direction, a first constant diameter having a constant inner diameter is provided. A portion 48 is formed, and a second constant diameter portion 50 having an inner diameter smaller than that of the first constant diameter portion 48 is formed on the arrow R direction side of the first constant diameter portion 48.

  The disengagement member 20 is disposed in the direction of arrow R of the intermediate ring 18 and on the inner peripheral side of the sleeve 16, and the lock ring 52 is on the inner peripheral side of the inclined portion 46 of the sleeve 16 and the intermediate ring 18. And the disengagement member 20.

  As shown in FIG. 3, the lock ring 52 has a ring shape as a whole, and a plurality of claw portions 52A protruding inward are formed at intervals in the circumferential direction.

  The lock ring 52, for example, a metal plate (steel plate or the like) can be punched and then press formed.

  As shown in FIG. 2, the lock ring 52 has a substantially V-shaped cross section at the claw portion 52A.

  Further, as shown in FIG. 3, the diameter of the virtual circle FC passing through the tip portion of the claw portion 52 </ b> A is set to be slightly smaller than the outer diameter of the tube 24.

  As shown in FIG. 2, the lock ring 52 is arranged so that the tip of the claw portion 52 </ b> A faces the arrow L direction.

  The disengagement member 20 has a constant inner diameter and an inner diameter dimension slightly larger than the outer diameter of the tube 24.

  The disengagement member 20 is a pressing portion 54 whose outer peripheral surface on the arrow L direction side is tapered, and a constant outer diameter portion 56 having a constant outer diameter is formed on the arrow R direction side of the pressing portion 54. Has been.

  The disengaging member 20 has the pressing portion 54 directed toward the intermediate ring 18, and the constant outer diameter portion 56 is inserted into the second constant diameter portion 50 of the sleeve 16.

  In the disengaging member 20, the outer diameter of the pressing portion 54 is formed slightly smaller than the inner diameter of the first constant diameter portion 48, and the outer diameter of the constant outer diameter portion 56 is the second constant diameter portion 50 of the sleeve 16. The inner diameter is slightly smaller than the inner diameter.

As a result, the disengagement member 20 is movable in the axial direction inside the sleeve 16.
(Jig)
The tube removal jig 10 can be formed, for example, by lathing and milling (or end milling) a metal round bar.

  For example, a round bar is turned to produce an intermediate processed product 64 having an opening 63 integrally provided with a circular pipe portion 60 and a flange portion 62 as shown in FIGS. 4 (A) and 4 (B).

  The inner diameter of the circular pipe part 60 is slightly larger than the outer diameter of the pipe 24, and the outer diameter of the circular pipe part 60 is slightly smaller than the inner diameter of the second constant diameter part 50 of the sleeve 16.

  Next, the hatched portion shown in FIG. 4A of the intermediate processed product 64 is cut and removed by a milling cutter (or an end mill) to form a groove 66, and the shape in plan view is substantially C-shaped.

  Then, the jig | tool 10 as shown in FIG. 1 is obtained by chamfering a corner | angular part.

  The circular pipe portion 60 of the intermediate processed product 64 is partially removed after the groove 66 is formed. In the completed pipe removing jig 10, the arc-shaped rib 68 (hereinafter referred to as the rib 68 in the pipe removing jig 10). .)

The flange portion 62 has a hole 70 for attachment to a key holder or the like.
(Function)
First, a procedure for connecting the pipe 24 to the pipe joint 12 will be described.

  First, the tube 24 is inserted inside the disengagement member 20, and the inserted tube 24 is pushed in until it hits the protrusion 28 (see FIG. 5).

  When the pipe 24 is pushed into the pipe joint 12, the tip of the pipe 24 spreads the claw part 52 </ b> A of the lock ring 52, and the tip of the claw part 52 </ b> A slides on the outer periphery of the pipe 24.

  Here, when force (for example, pressure of fluid in the tube 24, force to artificially pull out) is applied to the tube 24 in the direction of the arrow R, the tip of the claw portion 52A becomes the outer peripheral surface of the tube 24. Therefore, the pipe 24 is prevented from moving out of the pipe joint 12.

  Next, a procedure for removing the pipe 24 from the pipe joint 12 will be described.

  When it is desired to separate the pipe joint 12 and the pipe 24 by exchanging the pipe joint 12 or the pipe 24, as shown in FIG. 5, the pipe removal jig 10 is fitted into the pipe 24 and the pipe removal jig 10 is moved in the axial direction. The rib 68 is pushed into the sleeve 16 as shown in FIG.

  Accordingly, the pressing portion 54 of the disengagement member 20 pressed by the rib 68 presses the claw portion 52A of the lock ring 52, and the tip of the claw portion 52A is separated from the outer peripheral surface of the tube 24.

  In this way, when the tube 24 is pulled out in a state where the tip of the claw portion 52A is separated from the outer peripheral surface of the tube 24 (that is, in a state where the tube removal jig 10 is pressed), the tube 24 and the pipe joint 12 are easily separated. Can be separated.

  The tube removal jig 10 is not limited to the shape shown in FIG. 1, but may be a semicircular shape as shown in FIG. 7, or a shape where the corners are not chamfered as shown in FIG. 8.

  Moreover, as shown in FIG. 9, the tube removal jig 10 may have a donut shape in the flange portion 62 and the rib 68.

  Further, as shown in FIG. 10, the tube removal jig 10 may have a flange portion 62 having a donut shape and two projections 72 serving as a substitute for the ribs 68 provided on one side thereof.

  In addition, the tube removal jig 10 may have a flange portion 62 having a C-shape as shown in FIG. 11 and three projections 72 instead of the ribs 68 provided on one side thereof, as shown in FIG. As shown, two protrusions 72 serving as a substitute for the rib 68 may be provided.

It is a front view of a pipe removal jig. It is the partial sectional view which looked at the pipe joint from the side. It is a front view of a lock ring. (A) is a front view of an intermediate processed product, and (B) is a cross-sectional view of the intermediate processed product. It is the partial sectional view which looked at the pipe joint which connected the pipe from the side. It is the partial sectional view which looked at the state where the pipe removal jig was inserted in the pipe joint, and was seen from the pipe joint side. (A) is a side view of the tube removal jig which concerns on other embodiment, (B) is a front view of the tube removal jig shown to (A). (A) is a side view of the pipe removal jig which concerns on other embodiment, (B) is a front view of the pipe removal jig shown to (A). (A) is a side view of the pipe removal jig which concerns on other embodiment, (B) is a front view of the pipe removal jig shown to (A). (A) is a side view of the pipe removal jig which concerns on other embodiment, (B) is a front view of the pipe removal jig shown to (A). (A) is a side view of the pipe removal jig which concerns on other embodiment, (B) is a front view of the pipe removal jig shown to (A). (A) is a side view of the pipe removal jig which concerns on other embodiment, (B) is a front view of the pipe removal jig shown to (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pipe removal jig 12 Pipe joint 66 Groove 68 Rib (engagement release member press convex part)
72 Protrusion (engagement release member pressing projection)

Claims (6)

A hole for inserting a tube, and a tube having a constant diameter is provided inside the hole, and a tip portion is provided at the outer periphery of the tube when a force in the extracting direction is applied to the inserted tube. An elastically deformable claw portion that bites into the surface and prevents the tube from being pulled out, and is arranged inward of the hole, and slides in the axial direction to contact the claw portion so that the tip portion of the claw portion is A disengagement member that separates from the outer peripheral surface of the pipe, and a pipe removing jig for a pipe joint used in a pipe joint comprising:
A main body formed larger than the outer diameter of the tube;
A groove formed in the main body and allowing the tube to be inserted;
Engagement provided on a side surface of the main body, facing the disengagement member when the tube is inserted into the groove and the tube contacts the bottom of the groove, and can be inserted into the hole. A release member pressing projection,
A pipe removing jig for a pipe joint, characterized by comprising:   2. The disengagement member pressing convex portion is an arc-shaped rib, has a certain height, and has a length of 1/8 or more of the outer peripheral length of the tube. Pipe removal jig for pipe joints as described in 1.   The pipe disengagement jig for a pipe joint according to claim 1, wherein two or more of the disengagement member pressing protrusions are provided at an interval, and the heights thereof are set to be the same. . A hole for inserting a tube, and provided inside the hole, allows insertion of a tube having a constant diameter, and when a force in the extraction direction acts on the inserted tube, the tip portion is the outer periphery of the tube. An elastically deformable claw portion that bites into the surface and prevents the tube from being pulled out, and is arranged inward of the hole, and slides in the axial direction to contact the claw portion so that the tip portion of the claw portion is A disengagement member that separates from the outer peripheral surface of the pipe, and a pipe removal jig for a pipe joint used in a pipe joint comprising:
A main body formed larger than the outer diameter of the tube;
An opening formed in the body for allowing insertion of the tube;
An engagement release member pressing projection that is provided on a side surface of the main body, faces the engagement release member when the tube is inserted into the opening, and is insertable into the hole;
A pipe removing jig for a pipe joint, characterized by comprising:   The pipe disassembly jig for a pipe joint according to claim 4, wherein the disengaging member pressing convex portion is a circular rib having a constant height.   The pipe disengagement jig for a pipe joint according to claim 4, wherein two or more of the disengagement member pressing protrusions are provided at an interval, and each height is set to be the same. .

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