JP6133705B2 - Pipe connection method or connection structure - Google Patents

Description

  The present invention relates to a pipe material connection method and connection structure, and more particularly to a connection method and connection structure for connecting and fixing a pipe material such as FEP (Flexible Electric Pipe corrugated hard polyethylene pipe, hereinafter) to a through hole for piping.

  In recent years, electrical cables such as power supply cables and communication cables have been buried in the ground, and pipes made of resin or the like are used for the underground burial. However, in order to pass an electric cable, such a pipe material is required to be waterproof. The following have been considered for such waterproofing. This application is the same in the inventors (developers), applicants or their heirs of the following Patent Documents 1, 2, 3, 4, and 5.

JP 2012-115106 A Japanese Patent No. 3090447 Japanese Patent No. 2934686 Japanese Utility Model Publication No. 07-043576 Japanese Utility Model Publication No. 07-016542 Japanese Utility Model Publication No. 61-174813 Japanese Utility Model Publication No. 61-007432 No. 02-018157 Japanese Patent No. 4101194

  This invention is made | formed in order to solve the subject mentioned above, and the objective of this invention is to improve waterproofness and water stop in connection of a pipe material. The present invention is an improvement of the invention described in Japanese Patent Laid-Open No. 2012-115106 and Japanese Patent No. 3090447.

  In order to achieve the above object, the pipe connection method or connection structure according to the present invention is an elongated pipe body in which a wire body through which a signal flows or power is sent is smaller than the inner diameter of the through hole. A tubular rigid sandwiching body is screwed on the outside, the tube body is exposed from the end of the sandwiching body, and the exposed portion of the tube body is placed in a through-hole opened in the support body. The body is brought into contact with a support around the through hole, and a cylindrical hard inner cylinder smaller than the inner diameter of the tube is inserted into the through hole from the side opposite to the tube and the sandwiching body and penetrated. Screwed into the inside of the tube body, extended outward from the entire circumferential surface of the inner cylinder without gaps, and a rigid flange portion larger than the inner diameter of the through hole, the through hole is opposite to the sandwiching body. Closed from the side without any gap, and by the progress of this screwing, the clamping body and the flange portion And the support body around the through hole is sandwiched between the sandwiching body and the flange portion, and along the periphery of the through hole, the support body around the through hole is sandwiched in the through hole of the flange portion. Does not absorb water, does not permeate water, does not expand or contract when contacted with water, does not cure or soften when exposed to water, and cures over time in air or water It is filled with a plastic material that seals between the flange part and the support around the through-hole or between the flange part and the tip of the tube body and prevents water penetration. I did it.

  This provides a pipe material connection method and connection structure with excellent waterproofness and water-stopping capability, and it is possible to connect a pipe material such as an FEP pipe to a pipe through-hole easily and reliably in a short time without requiring any skill.

(1) Connection structure and connection method of pipe material FIG. 1 shows the connection structure and connection method of the FEP pipe 8 (tube body). A cylindrical hard cylindrical sandwich outer cylinder 11 is threadedly inserted into the outside of the tubular FEP pipe 8 (tube material) having a long and narrow circular section. The sandwiched outer cylinder 11 is exposed and rotated from the end (left end in FIG. 1) of the sandwiched outer cylinder 11 while screwing and rotating the outside of the FEP tube 8.

  The outer side of the spiral unevenness 9 of the FEP tube 8 is pushed in by being screwed into the engaging convex ridges 15 on the inner peripheral surface of the holding outer cylinder 11 and cannot be easily removed. The FEP tube 8 and the sandwiching outer cylinder 11 are inserted from the right side of FIG. 1 into the through hole 2 formed in the support wall 1 (support) at the exposed portion of the FEP tube 8, and as shown in FIG. The outer flange portion 12 at the tip of the sandwiching outer cylinder 11 is in contact with the support wall 1 around the through hole 2.

  The thickness and outer diameter of the FEP tube 8 are smaller than the inner diameter of the through hole 2. The FEP tube 8 has a wave shape and a sine curve shape with a large number of cross sections, and the waves of the spiral irregularities 9 are formed in a spiral shape along the periphery of the FEP tube 8. The material of the FEP tube 8 is made of a soft or hard resin such as soft polyethylene, polycarbonate, ABS, polypropylene, or the like, which is flexible.

  Various materials are inserted into the FEP pipe 8. For example, a communication cable through which an optical or electric signal flows, a power feeding cable to which power is sent, and other lifeline materials (wire bodies, not shown) are housed and inserted therein.

  The FEP tube 8 may be thick and the tip of the FEP tube 8 may abut on the surface of the support wall 1 around the through hole 2. In this case, the outer diameter of the filling plastic material 7 of the inner flange portion 4 is larger than the inner diameter of the through hole 2, and the filling plastic material 7 comes into contact with and close to the surface of the support wall 1.

  The support wall 1 is made of concrete and has a constant thickness, for example, a rectangular tube shape. The support wall 1 contains electric devices such as power supply cables, communication cable connection devices, distribution devices, distribution devices, and relays. The The support wall 1 is provided in the basement of the site, the basement of the road, the other basement, the ground surface, the ground, or the like, or the base wall of the house. The thickness of the support wall 1 is 1 mm to 1 m, for example several tens of centimeters, and a plurality of straight and straight through holes 2 are formed at arbitrary positions on the support wall 1.

  2, 3, and 4 show the sandwiching outer cylinder 11. An outer flange portion 12 extends in a disk shape and in an annular shape at right angles without any gap from the entire peripheral surface of the end / tip (left end in FIG. 1) of the sandwiched outer cylinder 11. An annular sealing packing 13 (sealing body) is bonded to the front end surface of the outer flange portion 12, that is, the surface facing the through hole 2 by an adhesive or the like along the periphery of the through hole 2. The sealing packing 13 has cushioning properties and flexibility, and is made of urethane, for example, and does not expand even when it is touched with water, the internal bubbles are closed cells, and the sealing packing 13 itself prevents permeation of water.

  The sealing packing 13 abuts and seals closely against the surface of the support wall 1 around the through hole 2, so that the outer cylinder 11, the outer flange portion 12, and the water penetration between the sealing packing 13 and the support wall 1 are performed. To prevent. The sealing packing 13 extends inward in the center direction of the sandwiching outer cylinder 11, and the extending portion of the sealing packing 13 is the outer surface of the FEP tube 8 when the sandwiching outer cylinder 11 is screwed and rotated. It moves while rubbing and seals against the outer surface of the FEP tube 8 to prevent water penetration.

  Reinforcing plates 14 extending in the longitudinal direction are formed at equal intervals around the sandwiched outer cylinder 11, and the ends of the reinforcing plates 14 are connected to the outer flange portion 12, and the sandwiched outer cylinder 11 and the outer flange portion 12. Strength of is strengthened. The sandwiched outer cylinder 11, the outer flange portion 12 and the reinforcing plate 14 are made of a hard material that hardly bends such as hard resin, for example, hard polyethylene, polycarbonate, ABS, polypropylene or the like.

  5 and 6 show the inner cylinder 3. The inner cylinder 3 (bell mouth) is cylindrical and made of a hard material that hardly bends such as a hard resin such as polyethylene or polycarbonate. The outer diameter of the inner cylinder 3 is smaller than the inner diameter of the through hole 2 and the inner diameter of the FEP pipe 8.

  Next, as shown in FIG. 8, the through hole 2 is inserted from the side opposite to the insertion direction of the FEP tube 8 and the sandwiching outer cylinder 11, passes through the through hole 2, and is further screwed into the FEP tube 8. Go together. On the entire outer peripheral surface of the inner cylinder 3, spiral spiral ridges 5 project.

  An inner flange portion 4 is formed at the end of the inner cylinder 3 (left side in FIG. 1). The inner flange portion 4 is a disk-like shape with no gap at right angles outward from the entire peripheral surface of the end portion of the inner cylinder 3. And it is extended annularly. The material of the inner flange portion 4 and the spiral protrusion 5 is made of a hard material that hardly bends, such as hard or soft resin, for example, hard polyethylene, polycarbonate, ABS, or polypropylene.

  The outer diameter of the inner flange portion 4 is larger than the inner diameter of the through hole 2, and the inner flange portion 4 closes the through hole 2. On the surface of the inner flange portion 4 on the inner cylinder 3 side (right side in FIG. 1), that is, the surface facing the through hole 2, an annular cushioning property and flexibility may be provided along the periphery of the through hole 2. The flexible packing 6 (flexible body) is bonded with an adhesive.

  The flexible packing 6 (flexible body) is made of urethane, for example, and does not expand even when it is touched with water, the internal bubbles are closed cells, and the flexible packing 6 itself prevents water penetration. The flexible packing 6 is in contact with and tightly sealed with the surface of the support wall 1 around the through hole 2, and water between the inner cylinder 3, the inner flange portion 4, and the flexible packing 6 and the support wall 1. Prevent penetration.

  Inside the annular flexible packing 6, that is, outside the inner cylinder 3, that is, between the flexible packing 6 and the inner cylinder 3, the surface of the inner flange portion 4 is flexible and filled with an adhesive or the like. Bonded with a material 7 (waterproof waterproofing material). The filled plastic material 7 is attached to the surface of the inner flange portion 4 facing the through hole 2 along the periphery of the through hole 2.

  When the inner cylinder 3 is screwed and rotated with respect to the inside of the FEP pipe 8, the distance between the inner cylinder 3 and the inner flange portion 4 and the sandwiched outer cylinder 11 and the outer flange portion 12 is shortened. The support wall 1 around the through hole 2 is sandwiched between the distal end surface of the outer flange portion 12 and the inner flange portion 4 of the inner cylinder 3.

  The inside of the spiral irregularities 9 of the FEP tube 8 is pushed in by screwing into the spiral ridges 5 on the outer peripheral surface of the inner cylinder 3 and is not easily removed. The FEP tube 8 is strongly pushed in, and the tip of the FEP tube 8 enters between the inner surface of the through hole 2 and the outer surface of the inner cylinder 3, and further contacts and closes the filled plastic material 7 inside the inner flange portion 4. Is done.

  Further, the flexible packing 6 is also tightly abutted and tightly sealed by the support wall 1 around the through-hole 2 so that the waterproofness and waterproofness are further strengthened. As a result, the filled plastic material 7 and the tip of the FEP tube 8 are brought into contact with each other more strongly and tightly sealed, and the waterproofness and waterproofness are further strengthened.

  Accordingly, a circular linear end portion of the tip of the FEP tube 8 is brought into contact with the filled plastic material 7, and the end portion / the end portion of the planar support wall 1 around the through hole 2 is brought into contact with the flexible packing 6. The end face comes into contact. The boundary between the flexible packing 6 and the filling plastic material 7 of the inner cylinder 3 substantially coincides with the through hole 2 of the support wall 1. Thereby, the filling plastic material 7 is made to oppose the through-hole 2, and waterproofness and water-stopping property do not fall.

  That is, the outer diameter of the filling plastic material 7 is substantially equal to the inner diameter of the through hole 2, and the filling plastic material 7 enters the through hole 2 and comes into contact with the tip of the FEP tube 8 (tube body). Sealing is performed to prevent permeation of water between the inner cylinder 3 and the inner flange portion 4 and the FEP pipe 8.

  In addition, the width of the filling plastic material 7 may be narrowed and the width of the flexible packing 6 may be widened so that the flexible packing 6 faces or enters the through hole 2. Thereby, the filling plastic material 7 can contact | abut only to the FEP pipe | tube 8, and can concentrate waterproofness and water-stopping to one pole. Alternatively, the filled plastic material 7 may be widened and the flexible packing 6 narrowed so that the filled plastic material 7 faces or contacts the outer surface of the support wall 1 outside the through hole 2. Thereby, waterproofness and water-stop are further improved.

  The boundary portion 10 between the inner cylinder 3 and the inner flange portion 4 is bent at a right angle, and the right-angle boundary portion 10 is 1.5 times the thickness of the inner tube 3 or the thickness of the inner flange portion 4. The strength is enhanced by 5.0 to 5.0 times, preferably 2.0 to 4.0 times.

  When the thickness is less than 2.0 times, the boundary portion 10 between the inner cylinder 3 and the inner flange portion 4 is deformed by the filled plastic material 7, and the waterproofness and waterstop performance are lowered. When the thickness is less than 5 times, the filling plastic material 7 greatly deforms the boundary portion 10 between the inner cylinder 3 and the inner flange portion 4.

  If the thickness exceeds 4.0 times, the periphery of the boundary portion 10 between the inner cylinder 3 and the inner flange portion 4 is deformed by the filled plastic material 7, and the waterproofness and water-stopping property are lowered. When the thickness exceeds 5.0 times, the periphery of the boundary portion 10 between the inner cylinder 3 and the inner flange portion 4 is further greatly deformed by the filled plastic material 7.

  Such an improvement in the strength of the boundary portion 10 can be achieved not only by the thickness but also by replacing the material with a solid material. For example, the material of the inner cylinder 3 and the inner flange portion 4 is made of a recycled resin material, a virgin material is used for the boundary portion 10, or a nonwoven fabric or / and a resin is sprayed on the outer back surface of the boundary portion 10. is there. In this case, the thickness of the boundary portion 10 may be 1.0 to 1.5 times.

  The cross-section of the spiral ridge 5 on the outer surface of the inner cylinder 3 is plate-like, and the cross-section of the spiral concavo-convex 9 of the FEP tube 8 is any of trapezoid, square, triangular, saw blade, other than wavy / sine curve Screwing is possible. The material of the FEP tube 8 is made of a flexible material such as a soft resin such as soft polyethylene, polycarbonate, ABS, or polypropylene as described above, but may be made of a hard material. Even in the case, since it is elongated, it bends to some extent as a whole.

  Further, the FEP tube 8 has no spiral spiral irregularities 9, for example, non-helical annular irregularities, and the cross section has a trapezoidal shape, a square shape, a triangular shape, or a saw blade shape other than the wavy / sine curve shape. May be.

  In this case, the spiral ridge 5 of the inner cylinder 3 is also an annular ridge, and the FEP tube 8 is flexible, and the FEP tube 8 is strongly pushed to the outside of the inner tube 3, so that the FEP tube 8 has an annular shape. The unevenness sequentially exceeds the annular ridges of the inner cylinder 3, and the FEP tube 8 is fixed so as not to be easily detached from the outer surface of the inner cylinder 3. This is also a kind of screwing.

  The soil is piled up on the FEP pipe 8 side outside the support wall 1 described above, and the FEP pipe 8 side outside the support wall 1 is underground. In some cases, the upper side of the support wall 1 may be underground. Water such as rainwater penetrates into the ground, and water tries to enter from the outside of the FEP pipe 8 and the sandwiching outer cylinder 11. This is waterproofed and waterproofed by the sealing packing 13 between the FEP tube 8 and the sandwiched outer cylinder 11, and further, by the filling plastic material 7 and the flexible packing 6 between the support wall 1, the inner cylinder 3 and the FEP tube 8 Furthermore, it is waterproof and water-stopped.

(2) Filled plastic material 7
As the filling plastic material 7, for example, a polyisobutene (PIB) -based 2100 aqua stop of a water stop material of STOPAQ in the Netherlands is desirable. The detailed characteristics of this 2100 aqua stop are described in detail in International Publication WO2005 / 005528. It is assumed that what is disclosed in this publication is also held in the detailed description of the present invention, and description thereof is omitted here.

  The filled plastic material 7 is a plastic material and is flexible and soft and easily deformed. This ease of deformation is the ease of deformation for filling and filling the annular concave portion inside the flexible packing 6 of the inner cylinder 3 in the connecting work of the main pipe material. The filled plastic material 7 once filled inside the flexible packing 6 of the inner cylinder 3 is not deformed by normal gravity.

  The filled plastic material 7 has adhesiveness, and even if there are irregularities, the filled plastic material 7 is filled along the irregularities and no gap is formed. Therefore, waterproofness and water-stopping properties do not deteriorate. Further, even if the main pipe material vibrates greatly due to an earthquake or the like, the filled plastic material 7 is flexible, and accepts this deformation / displacement in response to these deformations / displacements. The filled plastic material 7 itself is deformed and a gap is not formed, and self-repairability can be achieved.

  In particular, since the filled plastic material 7 itself has a slight fluidity, even if the filled plastic material 7 itself has oysters and small holes, these can be automatically repaired by the fluidity of the filled plastic material 7 itself. Even in the event of an earthquake, waterproofness and water stoppage will not deteriorate. Even with this fluidity, there is no inconvenience because it does not flow due to gravity.

  As described above, the filled plastic material 7 is formed between the inner flange portion 4 and the support wall 1 around the through hole 2 or between the inner flange portion 4 and the tip of the FEP pipe 8 (tube body). Seal the gap to prevent water penetration. Thereby, equipment, such as an electric cable such as a power supply cable and a communication cable, in the pipe material can be protected from water and a failure can be prevented.

  The filled plastic material 7 has no affinity or hydrophilicity for water. Therefore, the filled plastic material 7 does not absorb water, does not permeate water, does not swell when contacted with water, does not swell, does not harden or soften, and does not change viscosity or fluidity. . Therefore, the waterproofness and water-stopping performance do not deteriorate for a long period of time, and equipment such as an electric cable such as a power feeding cable and a communication cable in the pipe can be protected from water and can be prevented from malfunctioning.

  Also, even in water, even in locations where water is flowing, even if the main pipe is installed, the filled plastic material 7 does not mutate with water, so the same operation is performed as in the case where there is no water. Work efficiency is improved, and work defects do not occur.

  Further, since the filled plastic material 7 does not expand even in water or when touched with water, the main pipe material is not cracked by the expansion of the filled plastic material 7, the waterproofness and water stoppage are not reduced, and the filled plastic material 7 is Since it does not shrink even if it touches water, a gap is not formed between the filled plastic material 7 and the main pipe material, and waterproofness and waterstop performance are not lowered.

  Since the filled plastic material 7 does not harden even in water or when touched with water, the filled plastic material 7 is cured and cracks are not generated, and the waterproofness and water-stopping property are not lowered. Since it does not soften even if it touches, the filling plastic material 7 becomes fluidity, the filling plastic material 7 does not carry out a flow deformation, and waterproofness and water-stopping property do not fall.

  In addition, since the filled plastic material 7 does not absorb or transmit oxygen, it does not harden or soften over time even in air, and the viscosity and fluidity do not change. Therefore, there is no gap between the FEP pipe (tube body) 8 and the inner cylinder 3 and the support wall (support body) 1 of the pipe material at the time of installation over a long period of time. Therefore, equipment such as an electric cable such as a power feeding cable and a communication cable in the pipe material can be protected from water and failure can be prevented.

  Since the filled plastic material 7 does not absorb or transmit oxygen as described above, it has an effect of preventing rust against the metal. Therefore, even if a part of the pipe material in contact with the filled plastic material 7 is a metal, it can prevent rusting, and even if a part of this pipe material is a resin or the like, oxidation / deterioration due to oxygen can be prevented.

  The filled plastic material 7 has a high electric insulation effect, and can protect equipment such as an electric cable such as a power supply cable and a communication cable in the pipe material from electric leakage and prevent failure.

  The filling amount of the filling plastic material 7 is substantially the same as the thickness of the adjacent flexible packing 6. As a result, there is no step between the filled plastic material 7 and the flexible packing 6, and no gap is formed, so that the waterproofness and water stoppage are not lowered.

  When the main pipe is attached to the support wall (support) 1, the flexible packing 6 of the inner cylinder 3 may be compressed depending on the tightening condition. The support body 1 enters into the through hole 2 of the support 1, the sealing property is maintained, and the waterproofness and waterstop performance are not deteriorated. Such a change in tightening condition prevents the waterproofness and waterstop from changing.

  The filled plastic material 7 does not contain harmful substances, is harmless, does not contain environmental hormones, and does not cause inflammation even when directly touching the human body, such as limbs. Such a filled plastic material 7 has other properties than those described above, for example, phthalic acid ester, adipic acid ester, trimetic acid ester, polyester, phosphoric acid ester, citric acid ester, epoxy, etc. Chemical vegetable oil, sebacic acid ester, benzoic acid ester and the like may be used. The thickness of the filling plastic material 7 may be thicker than that of the flexible packing 6 or may be thinner.

(3) Other Embodiments The present invention is not limited to the above embodiments, and various modifications can be made. For example, the annular plate-shaped inner flange portion 4 and outer flange portion 12 may be partially cut out, or may have any shape such as an ellipse, a polygonal shape, a petal shape, a star shape, or a net shape, and the thickness may be a plate shape. In addition, it may be thick in a block shape, may extend outward from the vicinity of the center of the inner cylinder 3 and the sandwiched outer cylinder 11, or may be perpendicular to the inner cylinder 3 and the sandwiched outer cylinder 11. You may extend diagonally instead of a direction.

  Each cross-section of the through hole 2 may be any shape such as an ellipse, a polygon, a petal, a star, a taper, or a curved taper at the tip of the trumpet opening. The cross-sectional shapes of the sandwiching outer cylinder 11 and the FEP tube 8 may be any shape such as an ellipse, a polygon, a petal, a star, a taper, a curved taper at the tip of a trumpet opening, and the thickness of these cylinders. The thickness may be thick, and the thickness may not be constant but may vary.

  The through hole 2 may be curved or bent in addition to a straight line. In this case, the FEP tube 8 or the like is bent or bent according to the bending or bending. The cross-sectional shape of the support wall 1 may be a trapezoid or the like, such that the outer both surfaces of the support wall 1 are not parallel but inclined, and the through hole 2 may be opened obliquely with respect to the support wall 1.

  The inner flange portion 4 and the outer flange portion 12 may be formed integrally with the inner tube 3 and the sandwiched outer tube 11, may be detachable, or one of them may be screwed to the other. The outer surface of the FEP tube 8 may be flat in a hose shape or a cylindrical shape, and spiral ridges / projections may be formed on the outer surface and the inner surface of the FEP tube 8.

  The spiral ridges 5 on the outer side of the inner cylinder 3 and the engaging convex ridges 15 on the outer side of the sandwiching outer cylinder 11 are not plate-shaped, but may be mountain wave shapes, mountain shapes, mountain shapes of sine curves, triangles, trapezoids, sawtooth waveforms, square shapes, etc. . The inner cylinder 3 and the sandwiching outer cylinder 11 may be short as long as they can be screwed into the FEP pipe 8. The side surfaces of the inner cylinder 3 and the sandwiched outer cylinder 11 may have a waveform such as a sine curve in cross section as in the case of the FEP pipe 8.

  A part or all of the sealing packing (sealing body) 13 may be omitted. This is because the space between the tip of the FEP pipe 8 and the inner cylinder 3 and the inner flange portion 4 is waterproofed and stopped by the filled plastic material 7. If the sealing packing 13 is provided, the prevention / water stoppage between the tip of the FEP pipe 8 and the inner cylinder 3 and the inner flange portion 4 is improved. The flexible packing (flexible body) 6 can also be omitted.

  Part or all of the sealing packing (sealing body) 13 may be substituted by the filling plastic material 7. In addition, a part or all of the flexible packing 6 may be substituted with the filling plastic material 7. Furthermore, a part or all of the flexible packing 6 can be omitted. Thereby, the sealing packing 13 or the flexible packing 6 can be omitted, and the cost can be reduced.

  The sandwiching outer cylinder 11 is tapered, and the outer flange portion 12 is omitted or integrated into the tapered shape, and may be brought into contact with the through hole 2 on the side surface of the sandwiching outer cylinder 11. The hole 2 is also tapered in accordance with this. Further, the inner cylinder 3 is also tapered, and the inner flange portion 4 may be omitted or integrated into the taper shape, and may contact the through hole 2 on the side surface of the inner cylinder 3, and in this case, the through hole 2 also becomes tapered according to this.

  Support wall (support body) 1, through hole 2, inner cylinder (bell mouth) 3, inner flange portion 4, spiral protrusion 5, flexible packing (flexible body) 6, filled plastic material (waterproof waterproofing material) 7, FEP pipe (tube material) 8, spiral unevenness 9, boundary portion 10, sandwiching outer cylinder (sandwiching body) 11, outer flange portion 12, sealing packing (sealing body) 13, reinforcing plate 14, engagement convex ridge 15 The part or the whole may be omitted, the number thereof may be increased or decreased, the shape may be arbitrarily changed, and may be replaced with other equivalents, or two of these Or three or more may be combined or integrated and used together, and the material is made of hard resin, soft resin, metal, wood, laminated wood, synthetic material, plywood, decorative paper on the surface Glued, bamboo, resin, glass, cotton, cloth, thread, textile, rubber, paper, ceramic Ltd., Carbon, made of hard urethane, and may be made of these composites made / mixture manufactured / multilayered laminate.

(4) Effects of other inventions [Claim 1] A cylindrical rigid body outside the long tubular body in which a wire body through which a signal flows or power is sent is smaller than the inner diameter of the through hole. The tubular body is exposed from the end of the sandwiched body, the exposed portion of the tubular body is placed in a through hole opened in the support body, and the sandwiched body is placed around the through hole. A cylindrical rigid inner cylinder smaller than the inner diameter of the tube is inserted into the through-hole from the opposite side of the tube and the sandwiching body, and is threaded inside the tube. And extending from the entire circumferential surface of the inner cylindrical body without gaps, and with a hard flange portion larger than the inner diameter of the through hole, the through hole is closed without gaps from the opposite side of the sandwiching body. Due to the progress of the screwing, the separation distance between the holding body and the flange portion is shortened. The support around the through hole is sandwiched between the flange part, does not absorb water, does not permeate water, does not expand or contract when contacted with water, gets wet with water, and cures Between the flange and the support around the through hole, or between the flange and the tip of the tubular body. A pipe connecting method characterized by filling a surface of the flange portion facing the through hole along the periphery of the through hole with a plastic material that seals and prevents water penetration.

[Claim 2] A long tubular body in which a linear body through which a signal flows or power is transmitted is smaller than an inner diameter of a through hole formed in a support body, and is screwed to the outside of the tubular body. The tubular body is exposed from the end, the exposed portion of the tubular body is placed in the through hole, and a cylindrical rigid sandwiching body that comes into contact with the support around the through hole, and the tubular body and the sandwiched body From the opposite side of the body into the through-hole and screwed into the inside of the tube, and is a cylindrical hard inner cylinder smaller than the inner diameter of the tube, and from the entire circumferential surface of the inner tube Extending outwardly without gaps, the through hole is closed without gaps from the opposite side of the sandwiching body, and the distance between the sandwiching body and the flange portion is reduced by the progress of screwing of the inner cylindrical body. The inner diameter of the through-hole, where the support body around the through-hole is clamped by the sandwiching body and the flange portion A large rigid flange portion, and attached to the surface of the flange portion facing the through hole along the periphery of the through hole, does not absorb water, does not permeate water, and contacts water. Does not expand or contract, does not cure or soften when wet with water, and does not cure or soften over time in air, water, or between the flange and the support around the through hole or the flange A pipe connecting structure comprising: a plastic material for preventing permeation of water, which is sealed and filled between a portion and a tip of the pipe.

[Claim 3] On the outer periphery of the plastic material, a flexible body having flexibility to prevent water permeation that does not expand even when touched by water is attached in an annular shape. 3. The pipe connection structure according to claim 2, wherein a concave portion is formed on the flange portion between the natural body and the inner cylindrical body, and the plastic material is filled in the concave portion.

  Thereby, the plastic material is sequentially put into the concave portion and added. Therefore, a special formwork for forming the plastic material can be eliminated. As a result, the waterproofness and waterproofness can be improved without damaging or excessively applying force to the pipe connection equipment.

[Claim 4] The pipe connection structure according to claim 3, wherein a linear end abuts on the plastic material, and a planar end abuts on the flexible body.

  As a result, the plastic material is in contact with the end line of the tubular body, not the surface, so when connecting the main pipe material, the end line is good for the plastic material. By biting in, the water-stopping and waterproofing properties are strengthened, and the tube body is not damaged. As a result, the waterproofness and waterproofness can be improved without damaging or excessively applying force to the pipe connection equipment.

[Claim 5] A flexible body is attached to the outer periphery of the plastic material, which does not expand even when touched by water, and has flexibility to prevent water penetration. The outer diameter of the plastic material is Substantially matches the inner diameter of the through-hole, enters the through-hole and comes into close contact with the tip of the pipe, and prevents water penetration between the inner cylinder and the flange and the pipe, The flexible body is in contact with and closely contacted with the surface of the support around the through-hole to prevent water penetration between the inner cylinder and the flange portion and the support. Item 5. A pipe connection structure according to Item 4.

  As a result, even if this clamping body is tightened strongly, the pressure of the plastic material can escape to the through hole, and no extra force is applied to the flange portion or the boundary portion between the flange portion and the inner cylindrical body. Does not break. And since this plastic material does not hit a support body very much, an extra force is not applied to a flange part by a plastic material, and there is no breakage. As a result, the waterproofness and waterproofness can be improved without damaging or excessively applying force to the pipe connection equipment.

[Claim 6] The thickness of the flexible body and the thickness of the plastic material are substantially the same, and the flexible body does not expand even when wetted with water. The pipe connection structure according to claim 5, wherein the pipe connection structure is not expanded.

  Thereby, when the water hits, the contact pressure to the support body of the plastic material and the flexible body does not change, so that waterproofness and water stoppage can be maintained, and excess pressure is not applied to the flange part. Alternatively, there can be no increase in pressure on the flange portion. As a result, the waterproofness and waterproofness can be improved without damaging or excessively applying force to the pipe connection equipment.

[Claim 7] The permeation of water is performed by sealing a space between the holding body and the support body around the through hole on a surface of the holding body facing the through hole along the periphery of the through hole. The pipe connection structure according to claim 6, further comprising a flexible sealing body for preventing the pipe connection. Thereby, the waterproofing property and waterproofness of a tubular body and an inner cylinder can be improved.

[Claim 8] The inner cylinder body and the flange portion to which the plastic material is attached are sealed in a waterproof container or bag, and are transported to a connection place of the support body or pipe material and taken out from the container or bag. The pipe connection structure according to claim 7, wherein the pipe connection structure is attached to the support. Thereby, before attaching an inner cylinder and a flange part, it can prevent that a soft plastic material deform | transforms or damages carelessly.

  Waterproof and waterproof when connecting pipes. The holding outer cylinder 11 is screwed to the outside of the long FEP pipe 8 so that the FEP pipe 8 is exposed from the end of the holding outer cylinder 11 and is inserted into the through hole 2 of the support wall 1 to be held outside. The cylinder 11 contacts the support wall 1 around the through hole 2. The inner cylinder 3 is inserted from the opposite side of the through hole 2 and is inserted and screwed into the FEP pipe 8. The inner hole portion 4 at the end of the inner cylinder 3 closes the through hole 2.

  The surface facing the through-hole 2 of the inner flange portion 4 does not absorb water, does not permeate water, does not expand or contract when contacted with water, does not wet or harden, softens, and does not wet. Filled plastic material 7 is filled which does not harden or soften over time. The inner cylinder 3 rotates and moves while being screwed into the FEP tube 8, and the support wall 1 around the through hole 2 is held between the tip of the holding outer cylinder 11 and the inner flange portion 4. Thereby, the front-end | tip of FEP pipe | tube 8 is strongly pressed against the filling plastic material 7 of the inner flange part 4, and between the front-end | tip of the FEP pipe | tube 8 and the filling plastic material 7 of the inner flange part 4 is sealed and water-stopped. The side of the FEP pipe 8 outside the support wall 1 is underground.

The connection structure and connection method of the FEP pipe 8 (tube body) are shown, and the state after connection is shown. The perspective view of the clamping outer cylinder 11 is shown. The perspective view of the clamping outer cylinder 11 is shown. The cross section of the clamping outer cylinder 11 is shown. The perspective view of the inner cylinder 3 is shown. The cross section of the inner cylinder 3 is shown. A state in which the sandwiching outer cylinder 11 is screwed to the outside of the FEP tube 8 and the FEP tube 8 is inserted into the through hole 2 of the support wall 1 is shown. In addition to FIG. 7, a state in which the inner cylinder 3 is screwed inside the FEP pipe 8 is shown.

1 ... support wall (support), 2 ... through hole,
3 ... Inner tube (bell mouth), 4 ... Inner flange,
5 ... spiral ridges, 6 ... flexible packing (flexible body),
7 ... filled plastic material, 8 ... FEP pipe (tube),
9 ... spiral irregularities, 10 ... boundary,
11 ... clamping outer cylinder (clamping body), 12 ... outer flange,
13 ... Sealing packing (sealing body),
14 ... reinforcing plate, 15 ... engaging convexity.

Claims (5)

A cylindrical rigid sandwiching body is screwed onto the outside of a long tubular body in which a wire body through which a signal flows or power is sent, which is smaller than the inner diameter of the through hole, This tube is exposed from the end, the exposed part of this tube is put in a through-hole opened in the support, and the sandwiching body is brought into contact with the support around the through-hole,
A cylindrical rigid inner cylinder smaller than the inner diameter of the tubular body is inserted through the through hole from the opposite side of the tubular body and the sandwiching body and is screwed into the inner side of the tubular body. The outer peripheral surface of the through hole is extended without gaps, and the through hole is closed from the opposite side of the clamping body with a hard flange portion larger than the inner diameter of the through hole. The separation distance between the sandwiching body and the flange portion is reduced, and the support body around the through hole is sandwiched between the sandwiching body and the flange portion, and does not absorb water and transmit water. In addition, it does not expand or contract even when in contact with water, has adhesiveness, has fluidity that does not flow due to gravity, does not absorb or permeate oxygen, does not cure or soften even when wet. Over the flange and above, which does not harden or soften over time in air or water A surface facing the through hole of the flange portion along the through hole around the 2100 aqua stop made by Strpack, which is a plasticizer that seals between the ends of the tube body and prevents water penetration. Filling
Around the outer periphery of the 2100 aqua stop, a flexible packing that does not expand even when wet with water and has flexibility to prevent water penetration is attached in an annular shape. The annular flexible packing and the inner cylinder With the body, a concave portion is formed on the flange portion, and the 2100 aqua stop is filled in the concave portion,
The linear end of the tube body bites into the 2100 aqua stop and abuts and is tightly sealed. The flexible packing is in contact with the end surface of the planar support around the through hole. A characteristic pipe connection method. This is a connection structure for connecting and fixing a long tubular body, which is smaller than the inner diameter of the through hole formed in the support body and accommodates a wire body through which a signal flows or power is sent, to the inside of the through hole. And
Screwed on the outside of the tube to expose the tube from the end, putting the exposed portion of the tube body in the through hole, sandwiching the cylindrical rigid that contacts the support around the through hole Body,
A cylindrical hard inner cylinder that is inserted into a through-hole from the opposite side of the tube body and the sandwiching body and screwed inside the tube body, and is smaller than the inner diameter of the tube body;
Is extended without gaps outward from the entire peripheral surface of the inner cylindrical member, a member of the larger hard than the inner diameter of the through hole, no gap busy Gutotomoni the said through hole from the side opposite to the holding member in Rukoto shrink the distance between the upper Kikyoji body by the progressive engagement of the inner cylindrical member, and a flange portion for holding the support around the through-hole between the holding member,
Attached to the surface of the flange portion facing the through-hole along the periphery of the through-hole, does not absorb water, does not transmit water, and does not expand or contract when contacted with water. It has fluidity that does not flow due to gravity, does not absorb or transmit oxygen, does not cure or soften even when wet, and does not cure or soften over time in air or water And 2100 aqua stop made by Strpack Co., which is a plasticizer that prevents water from penetrating and is sealed and filled between the flange portion and the tip of the tubular body,
Around the outer periphery of the 2100 aqua stop, a flexible packing that does not expand even when wet with water and has flexibility to prevent water penetration is attached in an annular shape. The annular flexible packing and the inner cylinder With the body, a concave portion is formed on the flange portion, and the 2100 aqua stop is filled in the concave portion,
The linear end of the tube body bites into the 2100 aqua stop and abuts and is tightly sealed. The flexible packing is in contact with the end surface of the planar support around the through hole. Characteristic tube connection structure.   3. The pipe connection according to claim 2, wherein an outer diameter of the 2100 aqua stop is wider than an inner diameter of the through hole, and the 2100 aqua stop faces or abuts against an outer surface of a support around the through hole. Construction.   4. The pipe connection structure according to claim 3, wherein the thickness of the flexible packing and the thickness of the 2100 aqua stop are substantially the same. A flexible material that prevents penetration of water by sealing a space between the holding body and the support body around the through hole on a surface of the holding body facing the through hole along the periphery of the through hole. 5. The pipe connection structure according to claim 4, wherein a sealing body having a property is attached.

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