JP2017198275A - Connector and method for connecting pipes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of connecting pipes having no rib at an outer peripheral surface to each other.SOLUTION: A connector 21 comprises: an operating lever 22 having a receiving side engagement member 27; a cooperating body 23 having an insertion port side engagement member 30; and a connecting member 24 arranged between the operating lever 22 and the cooperating body 23. The receiving side engagement member 27 can be fitted from outside at a part near a receiving port 12 of one pipe 11, can be engaged with the receiving port 12 in a pipe axis direction. The insertion port side engagement member 30 has a pair of holding parts 36, 37, can be fitted from outside to an insertion port 14 of the other pipe 13. When the operating lever 22 is turned toward an inserting direction A of the insertion port 14 around a fulcrum point of the receiving side engagement member 27, the insertion port 14 of the other pipe 13 is held between the holding parts 36, 37 of the insertion port side engagement member 30 and the insertion port side engagement member 30 is moved toward the inserting direction A of the insertion port 14.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a connector for joining tubes by inserting an insertion port into a receiving port, and a method for joining tubes using the connector.

  Conventionally, as this type of connector, for example, as shown in FIG. 16, ribbed tubes 101a and 101b, in which annular ribs 111a and 111b are provided at predetermined intervals along the axial direction on the outer peripheral surface of the tube, are connected. There are things that are used when doing. The connector 103 pivotally supports a semi-annular leg portion 132 sandwiched in a groove portion 112a formed on the outer periphery of one ribbed tube 101a at the lower end of the handle 131, and an intermediate position of the handle 131. A semicircular leg portion 134 is attached to the other end of the stay 133 while supporting one end of the stay 133 at the same time and sandwiching the groove 112b formed on the outer periphery of the other ribbed tube 101b.

  In order to connect the ribbed tubes 101a and 101b using such a connector 103, first, the seal packing 102 is attached to the diameter-enlarged receiving port 113a of one ribbed tube 101a and the end of the other ribbed tube 101b. Temporarily insert the tip where the is attached. Next, the semicircular leg portion 132 provided at the lower end of the handle 131 is sandwiched and locked in the groove portion 112a on the outer periphery behind the enlarged diameter receiving port 113a. On the other hand, the semi-circular leg portion 134 provided at the other end of the stay 133 is sandwiched and locked in the groove portion 112b on the outer periphery of the ribbed tube 101b.

  Next, when the upper end of the handle 131 is gripped by hand and swung in the Q direction indicated by the arrow, the ribbed tube 101b is drawn and its end is smoothly inserted into the enlarged diameter receiving port 113a. Thereby, the pipes 101a and 101b with ribs can be joined.

  The above-described tube connector 103 is described in, for example, Patent Document 1 below.

JP 2001-116166

  However, in the above-described conventional type, when connecting the tubes 101a and 101b, the semicircular leg 132 of the connector 103 is sandwiched in the groove 112a on the outer periphery of one ribbed tube 101a, and the semicircular leg 134 is connected to the other. Since it is necessary to be sandwiched in the groove 112b on the outer periphery of the ribbed tube 101b, the connector 103 can be used only for the ribbed tubes 101a and 101b including the annular ribs 111a and 111b, and the tube not including the annular ribs 111a and 111b. There is a problem that they cannot be joined together.

  An object of this invention is to provide the joining method and the joining method of a pipe | tube which can join the pipes which are not equipped with the rib on the outer peripheral surface.

In order to achieve the above object, the first invention is a connector for joining tubes by inserting the insertion port of the other tube into the receiving port of one tube,
An operating rod having a receiving side engaging member;
An interlocking body having an insertion side engaging member;
A connecting member provided between the operating rod and the interlocking body,
The operating rod and one end of the connecting member are rotatably connected,
The interlocking body and the other end of the connecting member are rotatably connected,
The receiving side engaging member can be fitted onto one of the tubes, and can be freely engaged with the receiving port in the tube axis direction.
The insertion side engagement member has a pair of sandwiching portions, and can be fitted on the insertion port of the other tube,
When the operating rod is rotated in the insertion direction of the insertion port with the receiving side engagement member as a fulcrum, the insertion port of the other tube is sandwiched between the holding portions of the insertion side engagement member, and the insertion side engagement member Moves in the insertion direction of the insertion slot.

  According to this, first, the tip of the insertion port of the other tube is temporarily inserted into the receiving port of one tube, and then the insertion side engaging member of the connector is externally fitted to the insertion port of the other tube. Then, an insertion slot is inserted between the pair of holding parts. Further, the receiving-side engaging member is externally fitted to one of the tubes, and is engaged with the receiving port in the tube axis direction.

Thereafter, an external force is applied to the upper portion of the operating rod, and the operating rod is rotated in the insertion direction of the insertion port with the receiving side engaging member as a fulcrum.
The insertion side engaging member is tilted in the insertion direction of the insertion port in conjunction with the rotation of the operation rod, and the pair of holding portions hold the insertion port of the other tube, and the operation rod rotates in this state. Accordingly, the insertion-side engaging member moves in the insertion direction of the insertion port. Thereby, the insertion port of the other tube is inserted into the receiving port of one tube while being sandwiched between the clamping parts of the insertion side engaging member.

  Thus, the receiving side engaging member engages with the receiving port in the tube axis direction, and the inserting side engaging member is externally fitted to the inserting port of the other tube. Since the mouth-side engaging member is inclined in the insertion direction of the insertion opening and the paired holding portions hold the insertion opening of the other pipe, the pipes that do not have ribs on the outer peripheral surface are joined together. be able to.

In the connector according to the second aspect of the present invention, the receiving side engaging member can be fitted onto the vicinity of the receiving port of one of the tubes.
According to this, the receiving side engaging member is engaged with the receiving port in the tube axis direction by fitting the receiving side engaging member to the vicinity of the receiving port of one of the tubes.

In the connector according to the third aspect of the present invention, the receiving-side engagement member has a pair of arm members, and can be fitted onto the base portion of the receiving port of one of the tubes,
The direction in which the receiving side engaging member is fitted around the base of the receiving port of one tube is different from the direction in which the inserting port side engaging member is fitted into the inserting port of the other tube.

  According to this, the insertion side engagement member of the connector is externally fitted to the insertion port of the other tube from a predetermined direction, the insertion port is inserted between the pair of holding portions, and the reception side engagement is further performed. The member is externally fitted to the base portion of the receiving port of one tube from a direction different from the predetermined direction, and the base portion of the receiving port is inserted between the pair of arm members. As a result, the receiving side engaging member engages with the receiving port in the tube axis direction.

In the connector according to the fourth invention, the arm members are opposed to each other in one direction when viewed from the tube axis direction.
The sandwiching portions are opposed to each other in another direction different from one direction when viewed from the tube axis direction,
When the operating rod is rotated in the insertion direction of the insertion port with the receiving side engagement member as a fulcrum, the insertion side engagement member is tilted in the insertion direction of the insertion port, and the clamping part is different from the insertion port of the other tube. It is sandwiched from the direction.

  According to this, when an external force is applied to the upper part of the operation rod and the operation rod is rotated in the insertion direction of the insertion port using the receiving side engaging member as a fulcrum, the insertion side is interlocked with the rotation of the operation rod. The engaging member tilts in the insertion direction of the insertion port, and the pair of holding parts clamps the insertion port of the other tube from the other direction. In this state, as the operating rod rotates, the insertion side The engaging member moves in the insertion direction of the insertion slot. Thereby, the insertion port of the other tube is inserted into the receiving port of one tube while being sandwiched between the clamping parts of the insertion side engaging member.

In the connector according to the fifth aspect of the present invention, when the insertion port is sandwiched between the clamping portions of the insertion side engagement member, the contact portions between the clamping portion and the insertion port are at a plurality of positions different in the tube axis direction. It is.
In the junction device according to the sixth aspect of the invention, the contact portion between the holding portion closer to the connecting member and the insertion port among the paired holding portions is more than the contact portion between the holding portion farther from the connecting member and the insertion port. Is close to the receiving side.

The junction device according to the seventh aspect of the invention is a method of joining pipes using the junction device according to any one of the first to sixth aspects of the invention,
Temporarily insert the tip of the inlet of the other pipe into the receptacle of one pipe,
The insertion port side engagement member of the connector is externally fitted to the insertion port of the other tube, and the insertion port is inserted between the holding parts,
The receiving side engaging member is externally fitted to one of the tubes, and is engaged with the receiving port in the tube axis direction.
The operating rod is rotated in the insertion direction of the insertion port with the receiving side engaging member as a fulcrum.

  As described above, according to the present invention, the receiving-side engagement member engages with the receiving port in the tube axis direction, and the insertion-side engagement member is externally fitted to the insertion port of the other tube, so that the operating rod rotates. Accordingly, the insertion side engagement member is tilted in the insertion direction of the insertion port, and the pair of holding portions are configured to hold the insertion port of the other tube. No pipes can be joined together.

It is a perspective view of the junction device in a 1st embodiment of the present invention. It is a side view when a junction machine is set to a pipe same as the above. It is sectional drawing of the joint part of the pipe | tube connected by the connector similarly. It is a side view which shows the procedure when joining a pipe | tube using a connector, and shows the state which inserted the insertion port temporarily in the receiving port. It is a side view which shows the procedure at the time of joining a pipe | tube using a junction device similarly, and shows the state which set the junction device to the pipe | tube. It is a XX arrow line view in FIG. It is a XX arrow line view in FIG. It is a YY arrow line view in FIG. It is a side view which shows the procedure at the time of joining a pipe | tube using a junction device, and shows the state which rotated the operating rod. It is a XX arrow line view in FIG. It is a XX arrow line view in FIG. It is a side view which shows the procedure when joining a pipe | tube using a connector, and shows the state which further rotated the operating rod. It is a side view when the connector in the 2nd Embodiment of this invention is set to the pipe | tube. It is a side view which shows the procedure at the time of joining a pipe | tube using a connector, and shows the state by which the operating rod was rotated and the insertion port was pinched | interposed between clamping plates. It is a side view which shows the procedure when joining a pipe | tube using a connector, and shows the state which further rotated the operating rod. It is a side view when a pipe | tube is joined using the conventional junction device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
In the first embodiment, as shown in FIG. 3, reference numeral 1 denotes a push-on type detachment prevention pipe joint, and the other end of the pipe 11 connected to the receiving port 12 is connected to the other end. An insertion opening 14 formed at the end of the tube 13 is inserted.

  A seal groove 2 and a lock ring housing groove 3 are formed inside the receiving port 12. An annular seal member 4 made of rubber (an example of an elastic material) that seals between the inner peripheral surface of the receiving port 12 and the outer peripheral surface of the insertion port 14 is fitted in the seal groove 2.

  A lock ring 5 and a centering member 6 are fitted in the lock ring housing groove 3. The lock ring 5 is a metal member divided in the circumferential direction, and is configured to elastically hold onto the outer peripheral surface of the insertion opening 14 by having an elastic diameter reducing force. The centering member 6 is a rubber annular member, and holds the lock ring 5 in a centered state with respect to the receiving port 12 when the insertion port 14 is not inserted into the receiving port 12.

Further, a protrusion 8 is formed on the outer periphery of the distal end portion of the insertion opening 14, and the protrusion 8 can be engaged with the lock ring 5 from the back of the receiving opening.
As shown in FIGS. 1 and 2, reference numeral 21 denotes a connector for inserting the insertion port 14 of the other tube 13 into the receiving port 12 of the one tube 11 and joining the tubes 11 and 13 together. The connector 21 includes an operating rod 22, an interlocking body 23, and a connecting member 24 provided between the operating rod 22 and the interlocking body 23.

  The operating rod 22 has a plate-like handle 26 that is elongated in the vertical direction, and a receiving-side engagement member 27 provided at the lower end of the handle 26. The interlocking body 23 includes a plate-like interlocking frame 29 that is long in the vertical direction, and an insertion side engagement member 30 provided at the lower end of the interlocking frame 29.

  The receiving-side engagement member 27 is a portal-shaped member, and a pair of flat arm members 32 facing each other in the left-right direction (an example of one direction) when viewed from the tube axis direction C, and both arm members 32. And an attachment plate 33 provided between the upper ends of the two. The attachment plate 33 is attached to the lower end portion of the handle 26.

  The interval B between the arm members 32 is set to be smaller than the outer diameter D1 of the diameter-enlarged receiving port 12 and slightly larger than the outer diameter D2 of the tube 11 in the straight portion 15 having a diameter smaller than that of the receiving port 12. Has been. As a result, as shown in FIGS. 2 and 8, the receiving-side engagement member 27 can be externally fitted to the base portion of the receiving port 12 (an example of a portion near the receiving port 12) from above the one tube 11. Yes, and can be freely engaged with the receiving port 12 in the tube axis direction C.

  The insertion side engagement member 30 is a U-shaped member, and a pair of sandwiching plates 36 and 37 (an example of a sandwiching part) facing each other in the vertical direction (an example of another direction different from one direction). And a side plate 38 provided between the left and right side ends of both sandwiching plates 36 and 37. The upper clamping plate 36 is attached to the lower end portion of the interlocking frame 29.

  Further, the interval E between the sandwiching plates 36 and 37 is set to be slightly larger than the outer diameter D2 of the tube 13 in the straight portion 15. Thereby, the insertion side engagement member 30 can be fitted onto the insertion port 14 from one side of the other tube 13.

  Thus, the direction in which the receiving-side engaging member 27 is externally fitted to the base portion of the receiving port 12 of one tube 11, and the insertion-side engaging member 30 is externally fitted to the inserting port 14 of the other tube 13. The direction differs by 90 ° in the circumferential direction of the tubes 11, 13.

  A lower portion of the handle 26 of the operation rod 22 and one end of the connecting member 24 are connected to each other by a fastener such as a bolt 41 and a nut 42 so as to be rotatable. The upper part of the interlocking frame 29 of the interlocking body 23 and the other end of the connecting member 24 are connected to each other by fasteners such as bolts 43 and nuts 44 so as to be rotatable. A plurality of bolt holes 45 are formed at the other end of the connecting member 24, and the bolts 43 are inserted into any of the bolt holes 45.

The joining method which joins the pipe | tubes 11 and 13 using the above joining devices 21 is demonstrated below.
First, as shown in FIG. 4, the seal member 4 is fitted into the seal groove 2 inside the receiving port 12, and the lock ring 5 and the centering member 6 are fitted into the lock ring housing groove 3. Thereafter, the pipes 11 and 13 are arranged on the floor 51, and the tip of the insertion port 14 is temporarily inserted into the receiving port 12 temporarily.

  Next, as shown in FIGS. 2 and 5 to 7, the insertion-side engagement member 30 of the connector 21 is externally fitted to the insertion opening 14 from one side of the other tube 13, and a pair of clamping plates The insertion opening 14 is inserted between 36 and 37, and further, as shown in FIGS. 5 and 8, the receiving side engaging member 27 is externally fitted to the base portion of the receiving opening 12 from above the one pipe 11. The base portion of the receiving port 12 is inserted between the pair of arm members 32.

  The operator holds the upper end of the handle 26 by hand, and the operating rod 22 is inserted in the insertion direction A (for example, counterclockwise direction) of the insertion port 14 with the receiving side engagement member 27 as a fulcrum 52 as shown in FIG. Rotate. As the operating rod 22 rotates, the insertion side engagement member 30 is inclined in the insertion direction A (for example, counterclockwise direction) to a predetermined inclination posture (see the solid line in FIG. 9). As shown in FIG. 11, the insertion slot 14 is sandwiched between a pair of upper and lower clamping plates 36 and 37, and the pair of upper and lower clamping plates 36 and 37 clamp the insertion slot 14 from the vertical direction (an example of the other direction).

  At this time, as shown in FIGS. 9 and 11, the contact parts P <b> 1 and P <b> 2 between the clamping plates 36 and 37 and the insertion opening 14 are at different positions in the tube axis direction C, and the upper clamping part close to the connecting member 24. The contact part P <b> 1 between 36 and the insertion opening 14 is closer to the receiving opening 12 side than the contact part P <b> 2 between the lower holding portion 37 and the insertion opening 14 far from the connecting member 24.

  In this state, as shown in FIG. 12, by further rotating the operating rod 22 in the insertion direction A of the insertion slot 14, the insertion-side engagement member 30 is kept inserted in the predetermined inclination posture. It moves in the direction A, and the insertion port 14 of the other tube 13 is inserted into the receiving port 12 of one tube 11 while being sandwiched between a pair of upper and lower clamping plates 36 and 37. As a result, as shown in FIG. 3, the protrusion 8 of the insertion opening 14 passes through the inner periphery of the seal member 4 and the inner periphery of the lock ring 5 toward the receiving port, and one tube 11 and the other tube 13. And are connected.

  After connecting the pipes 11 and 13 as described above, the operating rod 22 is rotated in the opposite direction (clockwise) to return to the substantially vertical direction, and the receiving side engaging member 27 is connected to the base portion of the receiving port 12. The joint 21 is removed from the pipes 11 and 13 by separating the insertion side engaging member 30 from the insertion opening 14 to one side of the other pipe 13.

As shown in FIG. 2, the point where the operator applies the force by holding the upper end of the handle 26 in order to rotate the operating rod 22 is defined as a force point 53, and the length from the fulcrum 52 to the force point 53 is defined as L1. The external force (operating force) applied to the force point 53 is F1, the length from the fulcrum 52 to the bolt 41 and nut 42 fastening point (corresponding to the action point) is L2, and acts on the bolt 41 and nut 42 fastening point. If the force to do is F2,
F1 × L1 = F2 × L2
And
F2 = F1 × L1 / L2
It becomes.
Here, since the length L1 is longer than the length L2, a force F2 larger than the force F1 applied to the force point 53 by the operator acts on the fastening portion of the bolt 41 and the nut 42, and this force F2 is used for the insertion port 14. Is inserted into the receiving opening 12, whereby a large insertion force acts on the insertion opening 14 with a small force F <b> 1 (operation force) of the operator.

  Thus, the receiving side engaging member 27 is engaged with the receiving port 12 of one pipe 11 in the tube axis direction C, and the insertion side engaging member 30 is fitted in the external fitting direction of the receiving side engaging member 27 ( From the direction different from the vertical direction K) (left-right direction M), it is externally fitted to the insertion port 14 of the other tube 13, and the insertion side engaging member 30 is inserted into the insertion port 14 as the operating rod 22 rotates. Since the pair of upper and lower sandwiching plates 36 and 37 are configured to tilt in the insertion direction A and sandwich the insertion opening 14, the tubes 11 and 13 having no ribs on the outer peripheral surface can be joined.

  Further, as described above, when the operator rotates the operating rod 22 in the insertion direction A of the insertion opening 14 only once and inserts the insertion opening 14 into the receiving opening 12 (see FIG. 12), the insertion opening 14 is inserted. If the insertion amount is insufficient, the operating rod 22 is rotated in the opposite direction (clockwise) to return to the substantially vertical direction, and then the operating rod 22 is rotated again in the insertion direction A of the insertion slot 14. You can repeat that.

  Further, by selecting any one of the plurality of bolt holes 45 and connecting the interlocking body 23 and the connecting member 24 with bolts 43 and nuts 44, the mounting position of the interlocking body 23 is set in the tube axis direction. C can be changed. Thereby, according to the length G from the base part of the receiving port 12 to an opening edge part, the space | interval J of the receiving side engaging member 27 and the insertion side engaging member 30 can be adjusted.

  The receiving-side engaging member 27 can be externally fitted to the base portion of the receiving port 12 from above the one tube 11, but is not limited to the upper side. For example, the receiving-side engaging member 27 is received from one side of the one tube 11. It may be possible to externally fit the base portion of the mouth 12. Further, the insertion side engagement member 30 can be externally fitted to the insertion port 14 from one side of the other tube 13, but is not limited to one side, for example, from above the other tube 13. It may be externally fitted to the insertion opening 14.

(Second Embodiment)
In the first embodiment described above, as shown in FIG. 2, the interlocking body 23 has one insertion side engagement member 30, but in the second embodiment, in FIG. As shown in FIG. 15, the interlocking body 23 has a plurality of (two in FIG. 13) insertion-side engagement members 30a, 30b in the tube axis direction C. 30b has a pair of clamping parts 36 and 37, respectively. That is, the junction device 21 in the first embodiment described above is provided with a pair of upper and lower pair of sandwiching portions 36 and 37 as shown in FIG. 2, but the junction device in the second embodiment. Reference numeral 21 is provided with a plurality of pairs (two pairs in FIG. 13) of a pair of upper and lower clamping parts 36 and 37.

  These insertion side engagement members 30a and 30b are provided at the lower end portions of a plurality of (two in FIG. 13) interlocking frames 29a and 29b. The upper part of one interlocking frame 29a and the other end of the connecting member 24 are connected to each other by fasteners such as bolts 43 and nuts 44 so as to be rotatable.

  One interlocking frame 29a and the other interlocking frame 29b are connected via a plurality of upper and lower (two in FIG. 13) connecting rods 55 and 56. Both interlocking frames 29a and 29b and both connecting rods 55 and 56 constitute a four-node parallel link mechanism. The one end of the interlocking frame 29a and the connecting rod 55, one end of the interlocking frame 29a and the connecting rod 56, the other end of the interlocking frame 29b and the connecting rod 55, and the other end of the interlocking frame 29b and the connecting rod 56 are respectively The bolts 43 and 48 and nuts 44 and 49 are connected to each other so as to be rotatable.

The interlocking body 23 is configured by the interlocking frames 29a, 29b, the insertion-side engagement members 30a, 30b, and the connecting rods 55, 56.
Hereinafter, the operation of the above configuration will be described.

  First, the seal member 4 is fitted into the seal groove 2 inside the receiving port 12, and the lock ring 5 and the centering member 6 are fitted into the lock ring housing groove 3. Thereafter, the pipes 11 and 13 are arranged on the floor 51, and the tip of the insertion port 14 is temporarily inserted into the receiving port 12 temporarily.

  Next, as shown by a solid line in FIG. 13, both the insertion-side engagement members 30 a and 30 b of the connector 21 are externally fitted to the insertion opening 14 from one side of the other tube 13, and each clamping plate 36, 37, the insertion port 14 is inserted between them, and the receiving side engaging member 27 is fitted over the base portion of the receiving port 12 from above the one tube 11 so that the receiving port 12 is interposed between the pair of arm members 32. Insert the root part.

  The operator holds the upper end of the handle 26 by hand and, as shown by an imaginary line in FIG. 13, the operating rod 22 is inserted in the insertion direction A (for example, counterclockwise) with the receiving side engaging member 27 as the fulcrum 52. Rotate in the rotation direction). As the operating rod 22 rotates, both the insertion side engagement members 30a and 30b are inclined in the insertion direction A (for example, counterclockwise direction) to a predetermined inclination posture, as shown in FIG. The insertion slot 14 is sandwiched between the clamping plates 36 and 37, and the clamping plates 36 and 37 clamp the insertion slot 14 from the vertical direction (an example of the other direction).

  At this time, the contact portions P1, P2, P3, and P4 between the respective clamping plates 36 and 37 and the insertion opening 14 are located at different positions in the tube axis direction C, and the upper holding portion 36 and the insertion opening 14 near the connecting member 24. The contact portions P1 and P3 are closer to the receiving port 12 than the contact portions P2 and P4 between the lower clamping portion 37 and the insertion opening 14 which are far from the connecting member 24.

  In this state, as shown in FIG. 15, by further rotating the operating rod 22 in the insertion direction A of the insertion opening 14, both insertion opening side engaging members 30 a and 30 b maintain a predetermined inclined posture. The insertion port 14 of the other tube 13 is inserted into the receiving port 12 of one tube 11 in a state where the insertion port 14 of the other tube 13 is sandwiched between the sandwiching plates 36 and 37. As a result, as shown in FIG. 3, the protrusion 8 of the insertion opening 14 passes through the inner periphery of the seal member 4 and the inner periphery of the lock ring 5 toward the receiving port, and one tube 11 and the other tube 13. And are connected.

In the second embodiment, the interlocking body 23 includes the two insertion-side engagement members 30a and 30b. However, the interlocking body 23 may include three or more insertion-side engagement members.
In each of the above embodiments, the receiving-side engagement member 27 can be externally fitted to the base portion of the receiving port 12 (an example of a portion in the vicinity of the receiving port 12). Good.

11 One tube 12 Receiving port 13 The other tube 14 Inserting port 21 Jointer 22 Operating rod 23 Interlocking body 24 Connecting member 27 Receiving side engaging members 30, 30a, 30b Inserting side engaging member 32 Arm members 36, 37 Clamping plate (clamping part)
52 fulcrum A insertion direction C tube axis direction P1 to P4 contact area

Claims (7)

A connector for connecting the tubes by inserting the insertion port of the other tube into the receiving port of one tube,
An operating rod having a receiving side engaging member;
An interlocking body having an insertion side engaging member;
A connecting member provided between the operating rod and the interlocking body,
The operating rod and one end of the connecting member are rotatably connected,
The interlocking body and the other end of the connecting member are rotatably connected,
The receiving side engaging member can be fitted onto one of the tubes, and can be freely engaged with the receiving port in the tube axis direction.
The insertion side engagement member has a pair of sandwiching portions, and can be fitted on the insertion port of the other tube,
When the operating rod is rotated in the insertion direction of the insertion port with the receiving side engagement member as a fulcrum, the insertion port of the other tube is sandwiched between the holding portions of the insertion side engagement member, and the insertion side engagement member Moves in the insertion direction of the insertion slot. The joint according to claim 1, wherein the receiving side engaging member can be fitted onto a portion in the vicinity of the receiving port of one of the tubes. The receiving side engaging member has a pair of arm members, and can be externally fitted to the base portion of the receiving port of one of the pipes.
The direction in which the receiving-side engagement member is externally fitted to the base portion of the receiving port of one pipe is different from the direction in which the insertion-side engaging member is externally fitted to the insertion opening of the other pipe. The junction device according to claim 2. The arm members are opposed to each other in one direction as seen from the tube axis direction,
The sandwiching portions are opposed to each other in another direction different from one direction when viewed from the tube axis direction,
When the operating rod is rotated in the insertion direction of the insertion port with the receiving side engagement member as a fulcrum, the insertion side engagement member is tilted in the insertion direction of the insertion port, and the clamping part is different from the insertion port of the other tube. 4. The connector according to claim 3, wherein the connector is clamped from a direction. When the insertion port is sandwiched between the clamping portions of the insertion side engaging member, contact portions between the clamping unit and the insertion port are at a plurality of different positions in the tube axis direction. Item 5. The connector according to any one of items 4 to 4. Of the holding parts forming a pair, the contact part between the holding part closer to the connecting member and the insertion port is closer to the receiving side than the contact part between the holding part farther from the connecting member and the insertion hole. The junction device according to claim 5. A method for joining pipes using the joint according to any one of claims 1 to 6,
Temporarily insert the tip of the inlet of the other pipe into the receptacle of one pipe,
The insertion port side engagement member of the connector is externally fitted to the insertion port of the other tube, and the insertion port is inserted between the holding parts,
The receiving side engaging member is externally fitted to one of the tubes, and is engaged with the receiving port in the tube axis direction.
A method of joining pipes, characterized in that the operating rod is rotated in the insertion direction of the insertion port with the receiving side engaging member as a fulcrum.

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