JP6297840B2 - Pipe fitting - Google Patents

Description

  The present invention relates to a pipe joint.

  Patent document 1 discloses a pipe joint. The pipe joint includes a socket, an insertion port, a seal ring, and a stopper ring. The socket has a receiving portion at least at one end. The insertion opening has an insertion-side tip. The insertion-side tip is inserted into the socket receptacle so as to be relatively rotatable. The seal ring is interposed between the receiving portion and the insertion-side distal end portion. The stopper ring is attached to the outer periphery of the receiving part. A retaining groove is provided in the circumferential direction on the outer periphery of the insertion side distal end portion of the insertion port body. The stopper ring has a ring main body and a plurality of retaining claws. The ring body is formed in a C shape. The ring body can be deformed and expanded. The retaining pawl projects integrally inwardly on the inner periphery of the ring body. A stopper ring receiving groove is provided on the outer periphery of the receiving portion so as to correspond to the outer periphery of the retaining groove. The stopper ring is detachably fitted in the stopper ring receiving groove. A claw insertion hole is provided in the groove bottom of the stopper ring receiving groove. When the stopper claw of the stopper ring is inserted into the claw insertion hole, the tip of the stopper claw protrudes inward of the receiving portion. The tip of the retaining claw protruding from the claw insertion hole is engaged with the retaining groove. A socket cover made of synthetic resin is formed in a cylindrical shape on the outer periphery of the socket. The socket cover covers at least the outer periphery of the ring body.

JP 2009-92100 A

  The pipe joint disclosed in Patent Document 1 has room for improvement in the movement of the ket cover for an unpredictable reason.

  The present invention solves this problem. The purpose is to reduce the possibility of the socket cover moving for unpredictable reasons.

  The pipe joint of the present invention will be described with reference to the drawings. The reason why the symbols in the figure are used in this column is to help understand the content of the invention. The use of the symbols in the figure in this column is not intended to limit the scope of the invention to the scope shown.

  In order to achieve the above-described object, according to one aspect of the present invention, the pipe joint includes a cylindrical socket 10, a cylindrical insertion body 12, a stopper 14, and a socket cover 16. A socket 30 is provided at one end of the socket 10. On the side surface of the socket 10, a stopper entry hole 34 is provided. The insertion opening 12 is connected to the socket 10 by entering the socket 10 from the receiving portion 30. A recess 60 is provided on the outer peripheral surface of the insertion opening 12. The stopper 14 is inserted through the stopper entry hole 34 and fits into the recess 60 of the mouthpiece 12. Thereby, the stopper 14 prevents the insertion port 12 in a state connected to the socket 10 from coming out of the socket 10. The socket cover 16 is disposed on the outer periphery of the socket 10. The socket 10 has a plug connection part 20 and a pipe connection part 22. The plug connecting portion 20 is provided with a receiving portion 30 and a stopper entry hole 34. The tube connection part 22 is connected to the plug connection part 20. A linear convex portion 42 is provided on the outer peripheral surface of the pipe connecting portion 22. The socket cover 16 includes a movement restricting portion 102, an entry hole cover portion 100, and a fixing portion. The movement restricting portion 102 moves along the linear convex portion 42 of the socket 10. The entry hole cover part 100 is fixed to the movement restriction part 102. The entry hole cover part 100 covers the stopper entry hole 34 and the stopper 14 from the outside of the socket 10 as the movement restriction part 102 moves. The fixing unit fixes the movement limiting unit 102 to the linear convex portion 42 while the movement limiting unit 102 is in a predetermined state.

  While the movement restricting portion 102 is in a predetermined state, the movement restricting portion 102 is fixed to the linear convex portion 42 by the fixing portion. When the movement restriction part 102 is fixed to the linear convex part 42, the entry hole cover part 100 fixed to the movement restriction part 102 is also fixed. Since the entrance hole cover portion 100 is fixed, the possibility that the socket cover 16 moves alone is lower than in the case where the entry hole cover portion 100 is not.

Further, the tube connecting portion 22 described above, the outer diameter is less than the plug connection 20. In this case, the line-shaped protruding portions 42 that are along the direction from one end to the other end of the socket 10. Plug connection 20 that are opposed to each other with one end 56 and the gap 50 of the line-shaped protruding portion 42. Movement restricting portion 102, that has a pair of plate-like portions 110 adjacent spaced line-shaped protruding portion 42 fits the gap 120. The thickness of the plate-like portion 110, Ru thickness der capable traverse the gap 50 between the end 56 and the plug connection 20 of the line-shaped protruding portion 42. Fixing portion, that has an end hook portion 104. The one-end hooking portion 104 is in a state where a pair of plate-like portions 110 enters a gap 50 between one end 56 of the linear convex portion 42 and the plug connecting portion 20, and any one of the plate-like portions 110 is linearly convex. When facing the one end 56 of the portion 42, it is caught by the one end 56 of the linear convex portion 42.

  If the pair of plate-like portions 110 are adjacent to each other with a gap 120 in which the linear convex portion 42 is fitted, the socket cover is inserted while the linear convex portion 42 is fitted in the gap 120 of the pair of plate-like portions 110. 16 moves along the linear protrusion 42. Since the plug connecting portion 20 is opposed to the one end 56 of the linear convex portion 42 with a gap 50 therebetween, and the plate-like portion 110 is thick enough to cross the gap 50, the plate-like shape moved along the linear convex portion 42. The pair of portions 110 can fit into the gap 50. One end hooking portion 104 is in a state where a pair of plate-like portions 110 is in a gap 50 between one end 56 of linear convex portion 42 and plug connecting portion 20, and any one of plate-like portions 110 is linear. When it faces the one end 56 of the convex portion 42, it is caught by the one end 56 of the linear convex portion 42. Thereby, the socket cover 16 is fixed. The socket cover 16 thus fixed has a lower degree of freedom in the operation of fixing the socket cover 16 than in the case where the moving direction of the socket cover 16 is not limited by the linear protrusions 42. This is because one end hooking portion 104 is fixed by being hooked on one end 56 of the linear convex portion 42 after moving along the linear convex portion 42. Since the degree of freedom is small, for the person who connects the pipes with the pipe joint according to the present invention, the movement of the socket cover 16 is linear in the operation for fixing the movement restriction part 102 to the linear convex part 42. It is easier to understand than the case where the projection 42 is not limited.

  Alternatively, it is desirable that the one end hooking portion 104 described above has the groove forming portion 130 and the side facing portion 132. The groove forming part 130 protrudes from the plate-like part 110. The groove forming portion 130 has a groove 140 having a bottom that faces the tube connecting portion 22 and that fits the linear convex portion 42. The side facing portion 132 is disposed at the edge of the groove 140 of the groove forming portion 130. The side facing portion 132 faces the side surface of the linear convex portion 42 when the linear convex portion 42 is fitted in the groove 140 of the groove forming portion 130.

  The groove forming part 130 protrudes from the plate-like part 110. The bottom of the groove 140 of the groove forming part 130 faces the pipe connecting part 22. The groove 140 is large enough to fit the linear protrusion 42. Thereby, the groove forming part 130 can fit the linear convex part 42 in the groove 140 across the linear convex part 42 provided in the pipe connecting part 22. The groove forming portion 130 once straddling the linear convex portion 42 is caught by the linear convex portion 42. Since it protrudes from the plate-like portion 110, when the pair of plate-like portions 110 are in the gap 50 between the one end 56 of the linear convex portion 42 and the plug connecting portion 20, the portion where the groove forming portion 130 is caught is a line This is one end 56 of the convex portion 42. A person who connects a pipe and a pipe with the pipe joint according to the present invention is limited in movement by moving the plate-like part 110 along the gap 50 between the one end 56 of the linear convex part 42 and the plug connecting part 20. The part 102 can be fixed to the linear convex part 42. Moreover, the one-end hooking portion 104 has a side facing portion 132 in addition to the groove forming portion 130. The side facing portion 132 faces the side surface of the linear convex portion 42 when the linear convex portion 42 is fitted in the groove 140 of the groove forming portion 130. Since the side facing portion 132 faces the side surface of the linear convex portion 42, the groove forming portion 130 once straddling the linear convex portion 42 is compared with the case where the one-end hooking portion 104 does not have the side facing portion 132. The possibility of getting over the convex portion 42 is reduced.

  According to the present invention, the possibility that the socket cover moves due to an unpredictable reason can be reduced.

It is a perspective view of a pipe joint concerning an embodiment with the present invention. 1 is a perspective view of a socket according to an embodiment of the present invention. It is a figure of the insertion port concerning one embodiment of the present invention. It is a perspective view of a cover concerning a certain embodiment of the present invention. It is sectional drawing of a socket when a cover is mounted | worn with the socket concerning one embodiment of this invention, and a socket cover. It is sectional drawing which shows the condition in which the insertion port body is inserted in the socket concerning one embodiment of this invention. It is sectional drawing which shows the condition where the stopper ring was engage | inserted by the socket concerning one embodiment of this invention. It is a perspective view which shows the condition where the linear convex part of the socket concerning one embodiment of this invention was exposed. It is a perspective view showing the situation where the socket cover concerning a certain embodiment of the present invention was fixed to the socket.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[Description of structure]
FIG. 1 is a perspective view of a pipe joint according to the present embodiment. Based on FIG. 1, the structure of the pipe joint concerning this embodiment is demonstrated. The pipe joint according to the present embodiment includes a socket 10, an insertion port 12, a stopper ring 14, and a socket cover 16. The insertion opening 12 is connected to the socket 10. The stopper ring 14 prevents the insertion port 12 connected to the socket 10 from coming out of the socket 10. The socket cover 16 is disposed on the outer periphery of the socket 10. The socket cover 16 prevents the stopper ring 14 from coming out of the stopper entry hole 34 (see FIG. 2) and the recess 60 (see FIG. 3) of the insertion opening 12. In the case of the present embodiment, the socket 10, the insertion opening 12, the stopper ring 14, and the socket cover 16 are all made of synthetic resin.

  FIG. 2 is a perspective view of the socket 10 according to the present embodiment. The configuration of the socket 10 will be described with reference to FIG. The socket 10 is cylindrical. A socket 30 (see FIG. 5) is provided at one end of the socket 10. On the side surface of the socket 10, a stopper entry hole 34 is provided. The socket 10 has a plug connection part 20 and a pipe connection part 22. The inside of the plug connection part 20 and the inside of the pipe connection part 22 communicate with each other. In the case of this embodiment, the plug connection part 20 and the pipe connection part 22 are integrated.

  The above-described receiving portion 30 is disposed in the plug connecting portion 20. The insertion body 12 enters the socket 10 through the receiving portion 30. Further, the plug connection portion 20 is provided with a stopper ring receiving concave groove 32. The stopper ring 14 is fitted into the stopper ring receiving groove 32. Further, the above-described stopper entry hole 34 is disposed at the bottom of the stopper ring receiving groove 32 in the plug connecting portion 20. The inside and the outside of the plug connection portion 20 communicate with each other via the stopper entry hole 34.

  The pipe connecting part 22 includes a resin pipe connecting part 40, a linear convex part 42, and a cover retaining part 44. In the case of this embodiment, the resin pipe connection part 40, the linear convex part 42, and the cover removal prevention part 44 are united. The shape of the resin pipe connecting portion 40 is a cylindrical shape. The linear convex portion 42 is disposed on the outer periphery of the resin pipe connecting portion 40. As is apparent from FIG. 2, the shape of the linear protrusion 42 is linear. As is clear from FIG. 2, in the case of this embodiment, the linear protrusion 42 is along the direction from one end of the socket 10 to the other end. In the case of the present embodiment, one end 56 of the linear convex portion 42 faces the plug connecting portion 20 with a gap 50 therebetween. In other words, the plug connecting portion 20 faces the one end 56 of the linear convex portion 42 with a gap 50 therebetween. As is apparent from FIG. 2, in the case of this embodiment, the width of the linear protrusion 42 (the width in the direction perpendicular to the central axis of the resin pipe connecting portion 40) increases from the root to the top (up to the resin pipe connecting portion 40). The portion where the distance is long is narrower than the portion where the distance to the resin pipe connecting portion 40 is far. In the case of the present embodiment, the pipe connecting portion 22 has two linear convex portions 42. In the case of this embodiment, these two linear convex portions 42 are opposed to the resin pipe connecting portion 40 (see FIG. 5). The cover retaining portion 44 is disposed at the end portion of the resin pipe connecting portion 40. The cover removal preventing portion 44 prevents the socket cover 16 once attached to the socket 10 from being removed from the socket 10. A resin pipe connection port 46 is provided at the end of the cover retaining portion 44. The distal end portion of the synthetic resin pipe 200 (see FIG. 6) enters the resin pipe connection portion 40 through the resin pipe connection port 46. The synthetic resin pipe 200 having the tip portion entered into the resin pipe connecting portion 40 is fixed to the pipe connecting portion 22. Since the method of fixing the synthetic resin tube 200 is well known, it will not be repeated here.

  FIG. 3 is a view of the insertion opening 12 according to the present embodiment. In FIG. 3, a part of the insertion opening 12 is removed. Based on FIG. 3, the structure of the insertion port body 12 is demonstrated. The insertion opening 12 is cylindrical. A recess 60 and a seal groove 62 are provided on the outer peripheral surface of the insertion opening 12. In the case of this embodiment, the shape of the recess 60 is a groove shape similar to the seal groove 62. A seal material 64 is fitted into the seal groove 62.

  Based on FIG. 1, the structure of the stopper ring 14 is demonstrated. The stopper ring 14 has a ring body 80 and a retaining protrusion 82. In the case of this embodiment, the ring main body 80 and the retaining protrusion 82 are integrated. In the case of this embodiment, the ring body 80 has a C shape. The ring body 80 can be deformed and expanded. Accordingly, the stopper ring 14 can be fitted into the socket 10. The ring body 80 fits into the stopper ring receiving groove 32 of the socket 10. The retaining protrusion 82 protrudes inward from the inner peripheral surface of the ring body 80. In the case of this embodiment, the stopper ring 14 has three retaining protrusions 82. In the case of the present embodiment, when the ring main body 80 is fitted into the stopper ring housing concave groove 32 of the socket 10, the retaining protrusion 82 penetrates the retaining tool entry hole 34.

  FIG. 4 is a perspective view of the socket cover 16 according to the present embodiment. Based on FIG. 4, the structure of the socket cover 16 concerning this embodiment is demonstrated. The socket cover 16 includes an entry hole cover portion 100, a movement restriction portion 102, and one end hooking portion 104. In the case of this embodiment, the entrance hole cover part 100, the movement restriction part 102, and the one-end hook part 104 are integrated. In the case of this embodiment, the entry hole cover portion 100 is disposed on the outer periphery of the plug connection portion 20 when the socket cover 16 is attached to the socket 10. In the case of this embodiment, the shape of the entrance hole cover part 100 is a cylindrical shape. As described above, since the entry hole cover part 100, the movement restriction part 102, and the one-end hooking part 104 are integrated, the movement restriction part 102 is fixed to the entry hole cover part 100. That is, the entry hole cover part 100 is fixed to the movement restriction part 102. In the case of this embodiment, the movement restricting portion 102 is disposed on the outer periphery of the pipe connecting portion 22 when the socket cover 16 is attached to the socket 10. The movement restricting portion 102 moves along the linear convex portion 42 of the socket 10. The one-end hooking unit 104 fixes the movement limiting unit 102.

  The movement restricting portion 102 has a pair of plate-like portions 110. These plate-like portions 110 are adjacent to each other with a gap 120 in which the linear convex portion 42 enters. In the case of this embodiment, the thickness of these plate-like portions 110 is a thickness that can cross the gap 50 between the one end 56 of the linear convex portion 42 and the plug connecting portion 20. The movement restricting portion 102 may have any number of pairs of plate-like portions 110. These plate-like portions 110 are integrated with the entry hole cover portion 100.

  In the present embodiment, the one-end hooking portion 104 includes a groove forming portion 130 and a side facing portion 132. In the present embodiment, the groove forming part 130 and the side facing part 132 are integrated. Further, the one-end hooking portions 104 are respectively integrated with the plate-like portion 110. The groove forming part 130 protrudes from the plate-like part 110. The groove forming part 130 has a groove 140. The bottom of the groove 140 faces the pipe connecting portion 22. The size of the groove 140 is such a size that the linear convex portion 42 can be fitted. The side facing portion 132 protrudes from the plate-like portion 110 together with the groove forming portion 130. The side facing portion 132 is disposed at the edge of the groove 140 of the groove forming portion 130. The side facing portion 132 faces the side surface of the linear convex portion 42 when the linear convex portion 42 is fitted in the groove 140 of the groove forming portion 130. The shape of the side facing portion 132 is a flat plate shape.

[Description of manufacturing method]
The manufacturing method of the pipe joint concerning this embodiment is as follows. First, the manufacturer manufactures the socket 10, the insertion opening 12, the stopper ring 14, and the socket cover 16. As described above, these are all made of synthetic resin. These are manufactured by injection molding. If necessary, machining may be performed after injection molding. After these are manufactured, the manufacturer attaches the socket cover 16 to the socket 10. When the manufacturer inserts the socket cover 16 from the pipe connecting portion 22 side, the socket cover 16 is attached to the socket 10. At the time of mounting, the plate-like portion 110 of the socket cover 16 is expanded by the cover retaining portion 44. When the spread plate-like portion 110 gets over the cover retaining portion 44, the elastically deformed plate-like portion 110 returns to its original shape. Thereby, the mounting of the socket cover 16 to the socket 10 is completed. FIG. 5 is a cross-sectional view of the socket 10 and the socket cover 16 when the socket cover 16 is attached to the socket 10. Further, the manufacturer fits the sealing material 64 into the sealing groove 62 of the insertion opening 12. Thereby, the pipe joint concerning this embodiment is completed.

[Description of usage]
FIG. 6 is a cross-sectional view illustrating a state where the insertion opening 12 is inserted into the socket 10. FIG. 7 is a cross-sectional view showing a situation in which the stopper ring 14 is fitted in the socket 10. FIG. 8 is a perspective view showing a state where the linear protrusion 42 of the socket 10 is exposed. FIG. 9 is a perspective view showing a state in which the socket cover 16 is fixed to the socket 10. Based on FIG. 6 thru | or FIG. 9, the usage method (connection method of the synthetic resin pipe | tube by a pipe joint) concerning the pipe joint concerning this embodiment is demonstrated.

  First, the user causes the distal end portion of the synthetic resin tube 200 to enter the resin tube connection portion 40 in the socket 10. The distal end portion of the synthetic resin tube 200 enters the resin tube connection portion 40 through the resin tube connection port 46. As a result, the synthetic resin tube 200 is connected to the socket 10. When the synthetic resin tube 200 is connected to the socket 10, the user adheres the synthetic resin tube 200 to the socket 10. Since specific methods for bonding are well known, the description thereof will not be repeated here.

  When the synthetic resin tube 200 is bonded to the socket 10, the user connects the synthetic resin tube 202 to the insertion opening 12. The synthetic resin tube 202 connected to the insertion opening 12 is a tube different from the synthetic resin tube 200 connected to the socket 10. Since a specific method for connecting the synthetic resin tube 202 to the insertion opening 12 is well known, the description thereof will not be repeated here.

  When the synthetic resin tube 202 is connected to the insertion opening 12, the user inserts the insertion opening 12 into the socket 10. The distal end portion of the insertion opening 12 enters the plug connecting portion 20 via the receiving portion 30 (see FIG. 6). As a result, the insertion opening 12 is connected to the socket 10. When the insertion port body 12 enters the plug connection portion 20, the sealing material 64 mounted in advance on the insertion port body 12 is between the inner peripheral surface of the plug connection portion 20 and the outer peripheral surface of the insertion port body 12. Seal. As a result of the insertion body 12 being inserted into the socket 10, when the recessed portion 60 of the insertion body 12 becomes visible from the outside of the plug connection portion 20 through the stopper entry hole 34, the user can connect the plug connection portion 20. The stopper ring 14 is fitted into 20. When the stopper ring 14 is fitted, the ring body 80 of the stopper ring 14 is fitted into the stopper ring receiving groove 32. The retaining protrusion 82 of the stopper ring 14 passes through the retaining tool entry hole 34 and fits into the recess 60 of the mouthpiece 12 (see FIG. 7). Thereby, the insertion port 12 connected to the socket 10 cannot be removed from the socket 10. When the stopper ring 14 is fitted into the plug connection portion 20, the user moves the socket cover 16 by fitting the linear convex portion 42 to the pair of plate-like portions 110. Thereby, the pair of plate-like portions 110 moves along the linear convex portion 42. The direction in which the entry hole cover part 100 moves is limited to the direction along the linear convex part 42. With the movement of the pair of plate-like portions 110 (and thus the movement restricting portion 102), the linear convex portion 42 of the socket 10 is exposed as shown in FIG. At the same time, the entry hole cover part 100 of the socket cover 16 covers the stopper entry hole 34 and the stopper ring 14 from the outside of the socket 10. After the plate-like portion 110 of the socket cover 16 moves, the linear convex portion 42 passes through the pair of gaps 120 of the plate-like portion 110. When the linear convex portion 42 is exposed and the linear convex portion 42 passes through the pair of gaps 120 of the plate-like portion 110, the user turns the socket cover 16. When the socket cover 16 is turned, the plate-like portion 110 crosses the gap 50 (see FIG. 5) between the one end 56 of the linear convex portion 42 and the plug connecting portion 20. With this crossing, the groove forming portion 130 of the socket cover 16 straddles the linear convex portion 42. By straddling the linear convex portion 42, the groove 140 of the groove forming portion 130 fits into the linear convex portion 42. When the groove 140 is fitted into the linear convex portion 42, the groove forming portion 130 is caught by the linear convex portion 42 (see FIG. 9). The position where the groove forming portion 130 is caught is the one end 56 of the linear convex portion 42. Accordingly, the position of the pair of plate-like portions 110 is fixed in a state where the pair of plate-like portions 110 enters the gap 50 between the one end 56 of the linear convex portion 42 and the plug connecting portion 20. When the position of the pair of plate-like portions 110 is fixed, the connection of the synthetic resin pipes 200 and 202 by the pipe joint according to the present embodiment is completed.

[Effect of pipe joint according to this embodiment]
As described above, according to the pipe joint according to the present embodiment, the possibility that the socket cover 16 moves due to an unpredictable reason can be reduced.

  Moreover, according to the pipe joint concerning this embodiment, the direction where the approach hole cover part 100 moves is restrict | limited to the direction along the linear convex part 42. FIG. Moreover, the one-end hooking portion 104 is in a state in which the pair of plate-like portions 110 is in the gap 50 between the one end 56 of the linear convex portion 42 and the plug connecting portion 20, and any one of the plate-like portions 110 is present. When it is in a state of facing the one end 56 of the linear convex portion 42, it is caught by the one end 56 of the linear convex portion 42. Thereby, compared with the pipe joint in which the moving direction of the socket cover 16 is not limited by the linear convex portion 42, the pipe joint according to the present embodiment has a small degree of freedom in the operation of fixing the socket cover 16. Since the degree of freedom is small, for the person who connects the pipes with the pipe joint according to the present invention, the movement of the socket cover 16 is linear in the operation for fixing the movement restriction part 102 to the linear convex part 42. It is easier to understand than the case where the projection 42 is not limited.

  Further, according to the pipe joint according to the present embodiment, the groove forming portion 130 can fit the linear convex portion 42 into the groove 140 across the linear convex portion 42 provided in the pipe connecting portion 22. is there. The groove forming portion 130 once straddling the linear convex portion 42 is caught by the linear convex portion 42. A person who connects a pipe and a pipe with the pipe joint according to the present invention can fix the movement restricting portion 102 to the linear convex portion 42 by an operation of moving the plate-like portion 110 along the gap 50 described above.

  Moreover, the pipe joint according to the present embodiment has a side facing portion 132 in addition to the groove forming portion 130. Since the side facing portion 132 faces the side surface of the linear convex portion 42, the groove forming portion 130 once straddling the linear convex portion 42 is compared with the case where the one-end hooking portion 104 does not have the side facing portion 132. The possibility of getting over the convex portion 42 is reduced.

  Moreover, according to the pipe joint concerning this embodiment, the shape of the linear convex part 42 is linear. Thereby, in the pipe joint according to the present embodiment, when the pair of plate-like parts 110 moves along the linear convex part 42 as compared with the pipe joint having the bent part of the linear convex part 42, the linear convex part 42 The possibility that the movement of the socket cover 16 becomes difficult due to friction between the side surface of the portion 42 and the edge of the plate-like portion 110 can be suppressed.

<Description of modification>
The embodiments disclosed herein are illustrative in all respects. The scope of the present invention is not limited based on the above-described embodiment. Of course, various design changes may be made without departing from the spirit of the present invention.

For example, the form of the one-end hooking portion 104 is not limited to that described above .

  Moreover, the linear convex part concerning this invention is not limited to a linear thing. Therefore, examples of the linear convex portion according to the present invention include an arc shape in addition to a linear shape. However, the direction of the linear convex part concerning this invention needs to satisfy | fill the following requirements. The requirement is a requirement that “the entrance hole cover part that did not initially cover the stopper entry hole 34 can cover the stopper entry hole 34 and the stopper 14 as the movement restricting portion 102 moves”. is there. Moreover, in the linear convex part concerning this invention, cross-sectional shape is not specifically limited.

  In the present invention, the socket, the insertion opening, the stopper ring, and the socket cover may be integrated or may be composed of a plurality of parts. Moreover, these materials are not particularly limited.

  In the present invention, the stopper that prevents the insertion opening 12 from coming out of the socket 10 is not limited to the stopper ring 14. Examples of the stoppers other than the stopper ring 14 include a square member having a size capable of penetrating the stopper entry hole 34. In this case, the stopper connecting groove 32 may not be provided in the plug connecting portion 20.

  In the socket of the present invention, the outer diameter of the movement restricting portion may not be smaller than the outer diameter of the entry hole cover portion.

10 ... socket,
12 ... Insert body,
14 ... stopper ring,
16 ... Socket cover,
20 ... Plug connection part,
22 ... pipe connection part,
30 ... Reception part,
32. Stopper ring receiving groove,
34: Stopper entry hole,
40: Resin pipe connection,
42 ... linear convex part,
44. Cover removal prevention part,
46: Resin pipe connection port,
50, 120 ... clearance,
56 ... one end,
60 ... concave,
62 ... seal groove,
64 ... sealing material,
80 ... ring body,
82 ... retaining protrusion,
100 ... the entrance hole cover part,
102 ... Movement restriction part,
104 ... one end hook part,
110 ... a plate-shaped part,
130 ... side facing part,
132 ... groove forming portion,
200, 202 ... synthetic resin pipe,

Claims (2)

A cylindrical socket provided with a receiving portion at one end and a stopper entry hole on a side surface;
A cylindrical insertion body that is connected to the socket by entering the socket from the receiving portion and is provided with a recess on the outer peripheral surface;
A stopper that prevents the insertion port body in a state connected to the socket from coming out of the socket by passing through the stopper entry hole and fitting into the recess of the insertion port body;
A pipe joint including a socket cover disposed on an outer periphery of the socket,
The socket is
A plug connecting portion in which the receiving portion and the stopper entry hole are disposed;
A pipe connecting portion that is continuous with the plug connecting portion and has a linear convex portion provided on the outer peripheral surface;
The socket cover is
A movement restricting portion that moves along the linear convex portion of the socket;
An entry hole cover part fixed to the movement restriction part and covering the removal tool entry hole and the removal tool from the outside of the socket as the movement restriction part moves;
A fixing part for fixing the movement restriction part to the linear convex part while the movement restriction part is in a predetermined state;
The tube connecting portion has a smaller outer diameter than the plug connecting portion,
The linear protrusion is along a direction from one end of the socket to the other end,
The plug connecting portion is opposed to one end of the linear convex portion with a gap,
The movement restricting portion has a pair of plate-like portions adjacent to each other with a gap in which the linear convex portion is fitted;
The thickness of the plate-like portion is a thickness that can cross the gap between one end of the linear convex portion and the plug connecting portion,
The fixing portion is in a state in which the pair of plate-like portions is in a gap between one end of the linear convex portion and the plug connecting portion, and any one of the plate-like portions is the linear convex portion. while in a state facing the one end, the pipe joint characterized by having one end hook portion hooked to one end of the linear convex. The one end hook part is
A groove-forming part that protrudes from the plate-like part and has a groove of a size that the bottom part faces the pipe connecting part and the linear convex part fits;
It is arranged at an edge of the groove of the groove forming portion, and has a side facing portion that faces a side surface of the linear convex portion when the linear convex portion is fitted in the groove of the groove forming portion. The pipe joint according to claim 1 .

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