JP2014126186A - Pipe connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe connector which connects two pipes in a T shape.SOLUTION: There is provided a plate-like member which is put to one pipe 3 to hold the other pipe 4, and comprises: a curved surface 11 curved along a surface of the one pipe 3; a pair of flat plate surfaces 12 which extend in a curving direction from a curved surface lateral edge part 111 of the curved surface 11 and is provided with a fastening bolt hole 121; and a pair of flange surfaces 13 provided at flat plate surface longitudinal edge parts 122 extending in extending directions of the flat plate surfaces 12. The flange surfaces 13 are provided with support peripheral edge parts 131 which abut on the surface of the one pipe 3 from below when the flat plate surfaces 12 are put to a surface of the other pipe 3, and the curved surface 11 is made a bit open so that the shortest opposition distance (d) between the support peripheral edge parts 131 of the flange surfaces 13 provided on the pair of flat plate surfaces 12 respectively is larger than an external diameter D of the other pipe 3.

Description

  The present invention relates to a pipe connector for connecting two pipes in a T shape.

  When connecting two pipes in a T-shape (connecting one pipe to the other by abutting the other pipe), as shown in Patent Document 1, it is necessary to use a pipe connector that is separate from the pipe. It is customary. In the pipe connector (joint) disclosed in Patent Document 1, the through-fitting cylinder and the stop-fitting cylinder are integrated with each other in a T-shaped positional relationship, and the axes of both are aligned to be in half and the whole is halved. It is a configuration. The holding of the pipe by the through fitting cylinder or the dead fitting cylinder is based on the engagement between the protrusion provided in the through fitting cylinder or the dead fitting cylinder and the groove provided in each pipe (Cited document 1 [Claim 1]. ). The pipe connector disclosed in Patent Literature 1 is inserted into the fitting cylinder through one pipe, and the other pipe is stopped and inserted into the fitting cylinder and abuts against the one pipe inserted through the fitting cylinder. Two pipes are connected in a T shape.

JP 2004-169775 A

  Since the pipe connector disclosed in Patent Document 1 is halved as a whole, there is an advantage that both pipes can be mounted in a state where the other pipe is abutted against one pipe in advance and the connection work is easy. is there. However, in the two-pair member configuration, the same number of paired members to be matched must be arranged, and if one of them is lost, there is an inconvenience that it is no longer useful even if a large number of the other remains. In view of this inconvenience, when the pipe connector is integrally formed, how to insert one of the pipes becomes a problem. For example, if it is inserted from the pipe end and inserted through the pipe connector, the connecting operation becomes complicated and inconvenient.

  In addition, as in the pipe connector disclosed in Patent Document 1, holding of the pipe by the through fitting cylinder or the dead fitting cylinder is provided on the protrusion provided on the through fitting cylinder or the dead fitting cylinder and each pipe. If it engages with a groove | channel, not only a pipe coupler but a pipe side will be processed, and the versatility of a pipe coupler and a pipe will be impaired, and there also exists a problem that manufacturing cost becomes high. The engagement between the ridge and the groove also has a function of positioning the pipe connector with respect to the pipe. However, when the ridge and the groove are eliminated in order to solve the above problem, the positioning means of the pipe connector instead of the ridge and the groove. Is required.

  As described above, the pipe connector disclosed in Patent Document 1 has the advantage of facilitating the connection work, but has a problem due to the configuration of two pairs of members (need to align the same number of two pairs of members to be matched). ), And problems due to holding and positioning of the pipe due to engagement between the ridge and the groove (loss of versatility and high manufacturing cost). Therefore, in order to solve the above-mentioned problems, the configuration of a highly versatile pipe connector was examined.

  As a result of the study, we developed a pipe connector that connects two pipes in a T-shape, and is a plate-like member that is attached to one pipe and sandwiches the other pipe, following the surface of one pipe. A curved surface, a pair of flat plate surfaces extending in a bending direction from a curved surface lateral edge perpendicular to the bending direction of the curved surface, and provided with a tightening bolt hole, and an extending direction of the flat plate surface A pair of flange surfaces provided on the longitudinal edge of the flat plate surface extending, and a flange portion is provided with a support peripheral edge portion that comes into contact with the surface of one pipe from below when the flat plate surface is applied to the surface of the other pipe. The pipe connector is characterized in that the curved surface is open and formed so that the shortest facing distance of the supporting peripheral edge portion of the flange surface provided on each of the flat plate surfaces is larger than the outer diameter of one pipe.

  The curved surface being curved following the surface of one pipe means that the inner peripheral radius of the curved surface is equal to or slightly larger than the outer peripheral radius of the one pipe. Further, that the flat plate surface extends in the bending direction from the curved surface lateral edge portion means extending in the tangential direction of the curved surface at the curved surface lateral edge portion, but from the tangential direction according to the degree of opening of the curved surface. The flat plate surface may extend close or open. Since the flange surface is provided on the vertical edge portion of the flat plate surface extending in the extending direction of the flat plate surface (= the orthogonal direction of the horizontal edge portion of the curved surface), if the curved surface and the flat plate surface have the same width, the flange surface is curved. It protrudes in the width direction of the flat surface and flat surface, but for example, a cut is made in the lateral edge of the curved surface that is the boundary between the curved surface and the flat surface, and the flange surface is provided by bending from the vertical edge of the flat surface within the width of the curved surface May be. And forming the curved surface openly means that the angle formed in the tangential direction extending from the lateral edge of the curved surface so that the shortest facing distance of the supporting peripheral portion of the flange surface is larger than the outer diameter of one pipe = flat plate surface This means that the curvature of the curved surface and the fan angle that determine the opening degree are set.

  The pipe connector according to the present invention is a plate-like member in which a curved surface addressed to one pipe and a flat plate surface sandwiching the other pipe are integrated. In the pipe connector of the present invention, in a state where the other pipe is abutted against one pipe, the curved surface is plastically deformed so as to be wound around the one pipe and tightened with a tightening bolt. The other pipe is sandwiched between a pair of flat plate surfaces extending from the lateral edge of the curved surface of the surface, and one pipe is sandwiched between the support peripheral edge of the pair of flange surfaces provided on the vertical edge of the flat plate surface and the curved surface. Hold. Since the curved surface is open and the shortest facing distance of the supporting peripheral edge portion is larger than the outer diameter of one pipe, the flange surface does not get in the way when reaching one pipe.

  The flat plate surface is preferably provided with a fixing screw hole, and the other pipe is held by a fixing screw screwed through the fixing screw hole. In this case, it is preferable to provide a tightening bolt hole near the curved surface lateral edge, and provide a fixing screw hole on the opposite side of the curved surface lateral edge with the tightening bolt hole interposed therebetween. As a result, the curved surface is plastically deformed and the flat plate surface sandwiching the other pipe is brought into close contact with the other pipe, and the holding of the other pipe by the fixing screw becomes stronger, and the curved surface is paired with the curved surface. The backlash of the flange surface that holds the pipe is eliminated, and the holding of one pipe is also stable. The other pipe is not abutted against one pipe, but is abutted against the fastening bolt. For this reason, the fixing screw hole is provided on the side opposite to the curved surface lateral edge portion with the tightening bolt hole interposed therebetween.

  If the flat plate surface has a fastening bolt hole as an opening after the latching claw is cut and raised toward the opposite flat plate surface, the other pipe is not abutted against the clamping bolt, but is abutted against the latching claw. be able to. Thus, before the fastening bolt is inserted into the fastening bolt hole, the other pipe can be positioned with respect to the pipe connector, and no external force is applied to the fastening bolt via the other pipe. When the latching claw is cut away and raised away from the curved surface lateral edge, it does not protrude from the supporting peripheral edge of the flange surface provided on the flat surface of the flat surface of the flat surface that continues to the curved surface that is open. Don't get in the way when you face one pipe.

  The curved surface or flat plate surface is provided with a deformation inducing portion in the vicinity of the side edge of the curved surface, so that when the tightening bolts are tightened to bring the pair of flat plate surfaces closer, the deformation inducing portion induces plastic deformation of the curved surface or flat plate surface. Then, the curved surface or flat plate surface is brought into close contact with one pipe. Here, the provision of the vicinity of the curved surface lateral edge in the deformation inducing portion means that the deformation inducing portion is provided on either the curved surface or the flat plate surface along the curved surface lateral edge, or straddling the curved surface lateral edge. Therefore, it means that the deformation induction part is provided on the curved surface and the flat plate surface. For example, the deformation induction part is provided with a long opening in the extending direction of one pipe that is directed to the curved surface or a large number of openings arranged in the extending direction, or by reducing the plate thickness around the pipe. It is a part that is more easily plastically deformed. For example, the deformation attraction portion formed of a long opening allows a user to look into a positioning mark drawn on the surface of one pipe covered with a curved surface.

  Further, the curved surface may be provided with a positioning hole in which the alignment direction of a set of positioning portions is made to coincide with the circumferential direction (cross-sectional outer peripheral direction) of one pipe. A positioning part means the corner | angular part used as a part which is a part of the periphery of a positioning hole, and the mark on the curved surface which extends to the said periphery. These positioning holes can be used to determine the mounting position of the pipe connector in the extending direction of the one pipe simply by aligning the alignment direction of the pair of positioning portions with the circumferential marking line drawn on the surface of the one pipe. Easy to determine. Furthermore, when the positioning holes are provided so that the alignment directions of two orthogonal positioning parts are aligned with the circumferential direction and the extending direction of one pipe, the circumferential direction and the extending direction drawn on the surface of the one pipe are provided. By simply aligning the alignment direction of the positioning parts with the orthogonal marking lines, it is possible to easily determine the mounting position and mounting posture (position in the circumferential direction of one pipe) of the pipe connector in the extending direction of the one pipe. .

  Since the pipe connector of the present invention is an integral plate member, there is no problem that the same number of two pairs of members must be aligned. However, although it is an integral plate-like member, the curved surface is opened openly so that the shortest facing distance of the supporting peripheral edge portion of the flange surface provided on each of the pair of flat plate surfaces is larger than the outer diameter of one pipe. This prevents the flange surface from getting in the way when the curved surface is directed to one of the pipes. This brings about the effect of directly assigning the curved surface to an arbitrary site without inserting one pipe from the end, and facilitates the connecting operation.

  In the pipe connector of the present invention, when the flat plate surface is placed on the surface of the other pipe, the flange surface comes into contact with the surface of the one pipe from below. At this time, the flange surface can abut the vertical portion of the supporting peripheral portion (the vertical edge portion of the flange surface) or the flange surface itself against the surface of the other pipe. As a result, when each flat plate surface and a pair of flange surfaces provided on the vertical edge portions of the flat plate surfaces on both sides of each flat plate surface are brought into contact with the other pipe, the other pipe is sandwiched from the six directions by the pair of flat plate surfaces. And the other pipe can be held more stably.

  The fastening bolt has a function of firmly abutting a flat plate surface or a flange surface against the other pipe so as to hold the other pipe more stably. The tightening bolt also functions as a positioning member that abuts the other pipe. Further, since the fastening bolt hole is provided, the latching claw cut and raised toward the opposing flat plate surface functions as a positioning member that abuts the other pipe, and the external force through the other pipe is used as the fastening bolt. To prevent or suppress loosening and breakage of the tightening bolt.

  The deformation induction part provided in the vicinity of the lateral edge of the curved surface makes the vicinity of the deformation induction part easy to plastically deform. As a result, the curved surface and the flat plate surface are divided into a place where plastic deformation is difficult and a place where plastic deformation is difficult, and it is easy to plastically deform so that the curved surface or flat surface is wound around one pipe while avoiding unnecessary plastic deformation. Then, the support peripheral edge of the flange surface can be reliably pressed against the surface of the other pipe. In addition, the deformation attraction part is configured as a relatively large opening by adjusting the position and size so that the positioning mark written on one of the pipes that is originally covered by the curved surface can be seen. . The positioning hole provided in the curved surface has a function of facilitating the positioning of the pipe coupling tool and assisting the coupling work, for example, by aligning the alignment direction of a set of positioning portions with the marking line drawn on the surface of one pipe .

It is a perspective view showing the state which connected two pipes in the T shape using an example of the pipe connector of this invention. It is a disassembled perspective view showing the assembly relation between the pipe connector of this example and each pipe. It is a perspective view of the pipe connector of this example. It is a side view showing the relationship between the pipe connector of this example and one pipe. It is a perspective view showing the state which addressed the curved surface of the pipe connector to one pipe. It is a top view showing the state which addressed the curved surface of the pipe connector to one pipe. FIG. 7 is a plan view corresponding to FIG. 6, showing a state where the pipe connector is deviated in the extending direction with respect to one pipe. FIG. 7 is a plan view corresponding to FIG. 6, showing a state where the pipe connector is addressed in a circumferential direction relative to one pipe. It is a side view showing the state which inserted the clamping bolt in the clamping bolt hole provided in the flat plate surface of the pipe connector which addressed the curved surface to one pipe. It is a side view showing the middle of tightening with a fastening bolt and closing a flat plate surface. It is a side view showing the state which closed the flat plate surface and pinched the other pipe. It is a side view showing the state which screwed a fixing screw into the other pipe pinched by the flat plate surface. It is a longitudinal cross-sectional view showing the state which screwed and fixed the fixing screw to the other pipe pinched by the flat plate surface. It is a bottom view showing the relationship between the pipe which finished the connection, and the pipe connector.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. As shown in FIG. 1, for example, the pipe connector 1 of the present invention includes a curved surface 11 wound around one pipe 3 and a pair of flat plate surfaces 12 and 12 sandwiching the other pipe 4. One pipe 3 and the other pipe 4 are connected in a T shape. For convenience of explanation, the pipe connector 1 of this example is configured such that one pipe 3 extending along a horizontal plane is abutted from the lower side with the other pipe 4 extending along a vertical plane and is crossed in a T-shape. However, as the pipe connector 1 according to the present invention, the one pipe 3 extends in the vertical plane, and the other pipe 4 extends along the horizontal plane, or both are assembled in a positional relationship extending obliquely. May be.

  As shown in FIG. 2 or FIG. 3, the pipe connector 1 includes a curved surface 11 that is curved following the surface of one pipe 3, and curved surface lateral edges 111 and 111 that are orthogonal to the curved direction of the curved surface 11. A pair of flat plate surfaces 12, 12 provided with tightening bolt holes 121, 121 extending in the bending direction and penetrating the tightening bolt 126, and a flat plate in the extending direction of the flat plate surface 12 by cutting the flat plate surface 12. This is an integrally formed plate-like member comprising a pair of flange surfaces 13 and 13 formed by being bent along the surface vertical edge portion 122. The curved surface lateral edge portion 111 is a boundary between the curved surface 11 and the flat plate surface 12, and is matched with one side of the deformation induction portion 125 in this example. The flat surface vertical edge 122 is a bent edge of the flange surface 13 formed by bending from the flat surface 12.

  The curved surface 11 of this example is curved in the range of about 1/4 of the surface of the pipe 3 that is the object of application (see FIG. 4), and is provided on the flat plate surface 12. A curved-surface lateral edge 111 serving as a boundary with the flat plate surface 12 is set along one side of the deformation-inducing portion 125 of the rectangular opening. In addition, the curved surface 11 of the present example is provided with a positioning hole 112 whose positioning corners 113 and 114 are opposite corners at an intermediate position of the distance between the curved surface lateral edge portions 111 and 111 in the bending direction. The positioning hole 112 of this example is a plane having positioning portions 113 and 113 that are corner portions facing in the extending direction of one pipe 3 and positioning portions 114 and 114 that are corner portions facing in the circumferential direction of the one pipe 3. It is an opening with a diamond shape.

  The flat plate surface 12 in this example is a flat surface portion extending in the bending direction of the curved surface 11 along the tangent line of the curved surface horizontal edge portion 111, and extends from the side closer to the curved surface 11 to one side of the curved surface horizontal edge portion 111. It is provided with a deformation induction part 125 of a rectangular opening, a tightening bolt hole 121 that forms a hooking claw 124 that protrudes toward the opposite flat plate surface 12 opposite to the line symmetry by cutting and raising, and a fixing screw hole 123 ing. In the pipe connector 1 of this example, the curved surface horizontal edge portion 111 and the flat plate surface vertical edge portion 122 are parallel to each other, and the cross section formed by the flat surfaces 12 and 12 excluding the curved surface 11 and the flange surface 13 is one side. It is made the same in the extending direction of the pipe 3.

  The deformation inducing portion 125 is a portion that induces the plastic deformation when the curved surface 11 or the flat plate surface 12 is plastically deformed by tightening with the tightening bolt 126 and the flat plate surfaces 12 and 12 are closed. Accordingly, the curved surface 11 or the flat plate surface 12 is plastically deformed so that the pair of flat plate surfaces 12 and 12 approach each other with a force sufficient to tighten the tightening bolt 126. The deformation inducing portion 125 may be provided on the flat surface 12 or the curved surface 11 along the curved surface horizontal edge portion 111, or may be provided on the curved surface 11 and the flat surface 12 across the curved surface horizontal edge portion 111. Further, it is only necessary to induce plastic deformation of the curved surface 11 or the flat plate surface 12, and a configuration in which a large number of slits and holes are arranged may be employed. The deformation induction part 125 of the present example, which is a continuous opening, can also be used as a window for viewing a marking line, a note, etc. drawn on the surface of one pipe 3.

  The tightening bolt hole 121 of this example is not a simple opening, but is formed as an opening after the latching pawl 124 is cut and raised toward the opposing flat plate surface 12. The latching claw 124 abuts the other pipe 4 inserted between the closed flat plate surfaces 12, 12, and is a position where the pipe 4 is positioned with respect to the pipe connector 1, and is tightened to be inserted into the tightening bolt 121. It is also a guide part of the bolt 126. Further, by forming the fastening bolt hole 121 by cutting and raising the latching claw 124, an advantage that no scrap material discarded from the flat plate surface 12 can be obtained.

  The flange surface 13 of the present example is a plane formed by using the flat plate surface vertical edge portion 122 as a bent edge by a cut made along one side opposite to the one side matched with the curved surface horizontal edge portion 111 of the deformation induction portion 125. In the portion, the upper peripheral edge formed by the cut is cut obliquely to form a supporting peripheral edge 131 that contacts the surface of one pipe 3 that faces the curved surface 11. The support peripheral edge 131 in this example is a hypotenuse with a downward slope that coincides with a tangent line that contacts the surface of one pipe 3 that faces the curved surface 11 when the flat plate surface 12 is brought into contact with the other pipe 4. is there. The supporting peripheral edge 131 may be a concave curved edge that follows the surface or a corrugated edge as long as it can contact the surface of one pipe 3.

  The flat plate surface 12 of this example has a bent cross section that extends from the curved surface 11 with the deformation induction portion 125 interposed therebetween, and has a pair of flange surfaces 13 with the flat plate surface vertical edge portion 122 that is a bent edge interposed therebetween, By using the flange surface 13 as a reinforcing portion, the rigidity is relatively increased with respect to the curved surface 11 in spite of the provision of the tightening bolt hole 121 and the fixing screw hole 123. As a result, the flat plate surface 12 of the present example is not bent due to plastic deformation except for the portion nearest to the deformation inducement portion 125, and the other pipe 4 is stably sandwiched, and the flange surface 13 The supporting peripheral edge 131 can be brought into contact.

  The flange surfaces 13 and 13 in this example are provided in total, four in total, two on both sides of the opposing flat plate surfaces 12 and 12. As a result, one pipe 3 can abut four supporting peripheral portions 131, and the other pipe 4 has not only the flat plate surfaces 12 and 12 but also four flange surfaces 13 in contact with each other. , Can be held from six directions. The flange surface 13 only needs to be able to bring the supporting peripheral edge 131 into contact with one of the pipes 3 and to hold the other pipe 4 together with the flat plate surface 12, and is configured by fixing a separate plate material to the flat plate surface 12. You can also. Further, the flange surface 13 of the present example is formed by cutting the flat plate surface 12 extending in the width of the curved surface 11, and bending the side edges of the flat plate surface 12, but it is equivalent to the flange surface 13 in advance. The part may be projected on the side edge of the flat plate surface, and the projection may be bent.

  Next, a procedure for connecting two pipes 3 and 4 in a T shape using the pipe connector 1 of this example will be described. As shown in FIG. 4, the pipe connector 1 of the present invention has a shortest facing distance d (in this example, a support peripheral portion) of the support peripheral portions 131 and 131 of the flange surfaces 13 and 13 provided on the pair of flat plate surfaces 12 and 12, respectively. The curved surface 11 is opened and formed so that the distance between the 131 end and the upper corner of the flange surface 13 is larger than the outer diameter of one pipe 3. This eliminates the possibility that the flange surface 13 damages the pipe 3 when the curved surface 11 is applied to one of the pipes 3. Further, the pipe connector 1 in which only the curved surface 11 is directed to one pipe 3 can be removed from the one pipe 3, and in this case, there is no possibility that the flange surface 13 damages the pipe 4.

  As shown in FIG. 6, the pipe connector 1 of the present example has the alignment direction of the positioning portions 113, 113 that are the corners facing the extending direction of one pipe 3 of the positioning hole 112 provided in the curved surface 11. The alignment direction of the positioning portions 114 and 114 that are aligned with the marking line 31 in the extending direction of the pipe 3 and that faces the circumferential direction of one pipe 3 of the positioning hole 112 is the marking in the circumferential direction of the pipe 3. It can be accurately positioned with respect to one pipe 3 in line with line 32. As a result, if the pipe connector 1 of the present invention is used, the other pipe 4 can be brought into contact with a specific position of one pipe 3 from a specific direction, and the pipes 3 and 4 can be accurately connected as set. Can be assembled.

  For example, if the pipe connector 1 is displaced in the extending direction of the one pipe 3, the alignment direction of the positioning portions 114, 114 is displaced from the circumferential marking line 32 as shown in FIG. The position is adjusted by shifting 1 in the extending direction of the pipe 3. Also, if the pipe connector 1 is displaced in the circumferential direction of one pipe 3, as shown in FIG. 8, the alignment direction of the positioning portions 113, 113 is displaced from the marking line 31 in the extending direction. 1 is rotated in the circumferential direction of the pipe 3 to adjust the direction in which the flat plate surfaces 12, 12 extend (= the abutting direction of the other pipe 4). The position of the pipe connector 1 with respect to one pipe 3 is adjusted until the flat plate surfaces 12 and 12 are closed and the one pipe 3 is held and fixed by the curved peripheral surface 11 and the supporting peripheral edge 131 of the flange surface 13. You can even do it.

  In this way, the pipe connector 1 with the curved surface 11 directed to the correct position of the one pipe 3, as shown in FIG. 9, is a tightening bolt hole 121 on one plane plate 12 (right side in the figure in this example). The fastening bolt 126 inserted through the washer 128 is protruded from the fastening bolt hole 121 of the other flat plate 12 (left side in the figure in this example) and is fastened to the protruding portion of the fastening bolt 126. The curved surface 11 or the flat plate surface 12 is plastically deformed by screwing the nut 127, and as shown in FIG. 10, the opposing flat plate surfaces 12 and 12 are closed so as to approach each other. The tightening bolt hole 121 of this example is a long hole extending in the bending direction of the curved surface 11, and corresponds to a change in position of the tightening bolt 126 caused by closing the opposing flat plate surfaces 12 and 12.

  The other pipe 4 is inserted between the flat plate surfaces 12 and 12 when the flat plate surfaces 12 and 12 are closed to some extent. When the other pipe 4 is held between the flat plate surfaces 12 and 12, the end surface of the pipe 4 abuts against a hooking claw 124 formed in association with the tightening bolt hole 121. It is desirable that the stage of “closed to some extent” is a stage in which the end face of the other pipe 4 inserted between the flat plate surfaces 12 and 12 is hooked by the pair of hooking claws 124 and 124 facing each other. In the state where the other pipe 4 is inserted between the flat plate surfaces 12 and 12, as shown in FIG. 11, a tightening nut 127 is further tightened into the tightening bolt 126. The flat plate surfaces 12 and 12 are closed until they come into contact with the surface.

  When the other pipe 4 is sandwiched between the flat plate surfaces 12, 12, the supporting peripheral edge 131 of the flange surface 13 simultaneously contacts the surface of the one pipe 3. Since the other end of the other pipe 4 that is not shown is also fixed by another pipe connector or the like, there is no possibility of dropping off from the pipe connector 1, but the flat plate surface 12 is on the surface of the other pipe 4. Since they are just in contact with each other, there is a concern that excessive external force is applied and the initial insertion position is shifted or rattling. Therefore, as shown in FIG. 12, the pipe connector 1 of this example is configured to screw the fixing screw 129 into the other pipe 4 through the fixing screw hole 123 provided in the flat plate surface 12 and to pass through the flat plate surface 12. By connecting the pipe connector 1 and the other pipe 4 together, a stronger connection is realized.

  Thus, one pipe 3 is sandwiched between the curved surface 11 and the supporting peripheral edge 131 of the flange surface 13 and fixed in position, and the other pipe 4 is provided with the opposed flat plate surfaces 12 and 12 and flange surfaces 13 and 13. By being sandwiched between and fixed in position, the connecting operation of the two pipes 3 and 4 is completed. The two pipes 3 and 4 are not directly connected to each other, but are fixed to the pipe connector 1 and connected via the pipe connector 1. For example, one pipe 3 and the other pipe 4 are not in contact with each other with a fastening bolt 126 passing through them. Thus, the pipe connector 1 of the present invention holds the one pipe 3 and the other pipe 4 in different modes.

  As shown in FIG. 13, one pipe 3 directed to the curved surface 11 is held between the curved surface 11 and the supporting peripheral edge 131 of the flange surface 13 and held by the pipe connector 1. When the tightening nut 127 is screwed into the tightening bolt 126, the opposing flat plate surfaces 12 and 12 approach each other while falling toward the other pipe 4. When the flat plate surfaces 12, 12 sandwich the other pipe 4, the supporting peripheral edge portions 131, 131 provided on the flange surface 13 are pressed against the surface of the one pipe 4 from the radial direction, and the pipe 4 is moved together with the curved surface 11. Hold firmly. This can be seen when one pipe 3 is fixed in posture and position to the pipe connector 1, and conversely, when the pipe connector 1 is fixed in posture and position relative to the one pipe 3. You can also.

  As shown in FIG. 14, the other pipe 4 inserted between the flat plate surfaces 12 and 12 is sandwiched between the flat plate surface 12 and the flange surfaces 13 and 13 provided on the flat plate surfaces 12 from six directions. And held by the pipe connector 1. The opposing flat plate surface 12 and the flange surface 13 come closer to each other as the fastening nut 127 is screwed to the fastening bolt 126 and comes into pressure contact with the surface of the other pipe 4. The clamping of the pipe 4 by the surface 13 is strengthened. This can be seen when the other pipe 4 is fixed in posture and position to the pipe connector 1, and conversely, when the pipe connector 1 is fixed in posture and position relative to the other pipe 4. You can also. Thus, the two pipes 3 and 4 are connected to each other with the posture and position being fixed to each other via the pipe connector 1.

  In the case of this example, the two pipes 3 and 4 connected to each other have a fixing screw 129 screwed in. Therefore, the fixing screw 129 is first removed, and then the tightening nut 127 is loosened so that the flange surface 13 It can be easily disassembled by moving away the supporting peripheral edge 131, removing the other pipe 4 sandwiched between the flat plate surfaces 12 and removing the one pipe 3. In the pipe connector 1 of this example, the curved surface 11 or the flat plate surface 12 is plastically deformed so that the shortest facing distance d of the supporting peripheral edge 131 formed on the flange surface 13 is larger than the outer diameter D of the other pipe 4. If the curved surface 11 is opened again and formed, it can be reused.

1 Pipe connector
11 Curved surface
111 Curved side edge
112 Positioning hole
113 Positioning part in the extending direction of one pipe
114 Positioning part in the circumferential direction of one pipe
12 Flat surface
121 Tightening bolt hole
122 Vertical edge of flat plate
123 Fixing screw hole
124 Hanging pawl
125 Deformation invitation part
126 Tightening bolt
127 Tightening nut
128 washer
129 fixing screw
13 Flange surface
131 Support peripheral edge 3 One pipe
31 Marking line in the direction of extension of one pipe
32 Scratch line in the circumferential direction of one pipe 4 The other pipe d The shortest facing distance of the supporting peripheral edge of the flange surface D The outer diameter of one pipe

Claims (4)

A pipe connector for connecting two pipes in a T shape,
A plate-shaped member that is directed to one pipe and sandwiches the other pipe, curved along the surface of one pipe, and the curved direction from a curved surface lateral edge perpendicular to the curved direction of the curved surface And a pair of flat plate surfaces provided with tightening bolt holes, and a pair of flange surfaces provided in the vertical edge portion of the flat plate surface extending in the extending direction of the flat plate surface,
When a flat plate surface is applied to the surface of the other pipe, a support peripheral edge that comes into contact with the surface of one pipe from below is provided on the flange surface, and the shortest facing distance between the support peripheral portions of the flange surfaces provided on each of the pair of flat plate surfaces A pipe connector characterized in that the curved surface is opened and formed so as to be larger than the outer diameter of one of the pipes. The pipe connector according to claim 1, wherein the flat plate surface has an opening after the latching claw is cut and raised toward the opposing flat plate surface as a tightening bolt hole. The pipe connector according to claim 1, wherein the curved surface or the flat plate surface is provided with a deformation inducing portion in the vicinity of the curved surface lateral edge portion. The pipe connection tool according to any one of claims 1 to 3, wherein the curved surface is provided with a positioning hole in which the alignment direction of a set of positioning portions is made to coincide with the circumferential direction of one pipe.

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