JP2017096499A - Cover tube for cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a cover tube to be effectively fixed even if adiabatic material shows insufficient fixing and at the same time to prevent insulation resistance from being decreased against a cable or mechanical performance of insulator and sheath from being decreased, and additionally to provide a cover tube of which handling is easy and capable of preventing cables from being tangled.SOLUTION: This invention relates to a cover tube for use in fixing a cable to a part to be fixed together with an adiabatic material and this cover tube comprises a tube main body 15 having a void space 16 into which the cable 12 is inserted; and fins 17, 18 to which a fastening nail 14 extended outward in a rightward or leftward direction along a longer direction of the tube main body 15 is driven.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cover tube for fixing cables to an attachment portion together with a heat insulating material.

  In a building or the like, a heat insulating material is widely used in order to ensure heat insulation in the room. The heat insulating material is attached so as to cover the wall surface and the like, and it is indispensable for improving the air conditioning performance in a wooden construction or a prefabricated construction. There are so-called outer heat insulation (filling heat insulation) and inner heat insulation (outer heat insulation) as methods for attaching the heat insulating material. In the inner heat insulating method which is the subject of the present invention, heat insulation is provided between structural materials such as walls and columns. Fill the material. In this case, wiring, piping, and the like necessary for the indoor facilities are attached to the front surface (inside the room) and the back surface (outside the room) of the heat insulating material.

  FIG. 5A is an example in which a wiring cable is attached to the indoor side, in which a represents a cable and b represents a cover tube. In order to fix the wiring, for example, a stopper c called a staple formed in a U-shape is used, and the distal end collar portion is inserted into the heat insulating material d. The filler is attached to the wooden part e of the structural material or the like using a fastener called a fixing pin, but the fixing force is such that the heat insulating material d is prevented from falling, and therefore the wiring cable and the like are held. Is difficult.

  When the heat insulating material d is fixed to the wood part e with sufficient strength, the cable a can be supported, and Japanese Patent Laid-Open No. 2002-364778 discloses an invention for supporting such cables. Has been. In order to solve the problem of improving workability and not impairing the heat insulating effect by directly attaching to the heat insulating material, the invention comprises a support body of cables and a fixing screw portion fixed to the heat insulating material, The fixing screw portion is a cylindrical screw shaft portion having an open screw-in end, and has a configuration in which a screw thread portion is formed on the outer peripheral surface thereof. However, the above invention is intended for the case where the heat insulating material is fixed inside a double ceiling provided at the time of renovation of a building, and is not effective for a heat insulating material that is not sufficiently fixed.

  On the other hand, it has been clarified that cables and heat insulating materials cause problems if they are used in the wrong way. According to the technical data titled “Effects and measures against electric wires and cables by various heat insulating materials”, it is stated that the heat insulating materials used in buildings may degrade the performance of electric wires and cables depending on the method of use. Has been. The cable that has been pointed out to be a problem is a VVF cable (vinyl-insulated vinyl sheathed cable flat type) (however, this is also true for non-flat type VV cables).

  According to the above technical data, the cable temperature rises due to the heat insulation effect of the heat insulating material (thermal effect), and the characteristic deterioration due to the chemical reaction that occurs between the heat insulating material and the cable vinyl coating (chemical effect). However, in the case of heating, the former cannot be avoided. The chemical effect is partly due to the fact that the cable consists of a polyvinyl chloride mixture (PVC) coating. When the heat insulating material is made of foamed polyurethane, the foamed polyurethane generally contains an amine as a reaction catalyst, and the amine has a strong reducing action, so that it deteriorates due to the dehydrochlorination reaction of the vinyl chloride resin by contact with vinyl. It is said that there will be cases where the insulation resistance will be lowered.

  The troublesome chemical effect is due to glass wool with insulating moisture-proof paper. FIG. 5B shows the reaction model, in which the VVF cable g is in contact with the glass wool k through the moisture-proof paper h and the asphalt-based paint j. When the plasticizer contained in the PVC of the cable g moves to the asphalt paint j, the paint j dissolves, and the molten paint diffuses and penetrates into the PVC, reducing the insulation resistance and the mechanical performance of the insulator / sheath. It is to reduce.

  Therefore, the cover tube for fixing the cables together with the heat insulating material to the attached portion has the above-mentioned problem that there is no effective fixing method for the heat insulating material that is insufficiently fixed, as well as a decrease in insulation resistance and an insulator / There is a problem that the mechanical performance of the sheath should not be lowered.

JP 2002-364778 A

Technical Document Technical Article 121A “Effects and Countermeasures for Electric Wires and Cables by Various Heat Insulation Materials” Revised in March 2000, Created by Japan Electrical Wire Manufacturers Association

  The present invention has been made in view of the above points, and the problem is that a cover tube can be effectively fixed even if the fixing material is insufficiently fixed, and at the same time, the insulation resistance is reduced with respect to cables. And to prevent the mechanical performance of the insulator / sheath from deteriorating. Another object of the present invention is to provide a cover tube that is easy to handle and can prevent entanglement between cables.

  In order to solve the above problems, the present invention relates to a cover tube for fixing cables together with a heat insulating material to a mounting portion, a tube body having a space for inserting the cables therein, and a longitudinal direction of the tube body And a fin portion for driving in a nail that extends outward along the left and right sides.

  The cover tube of the present invention has a fin portion for driving the nail as a fixing means, and the nail is driven into the attached portion, so that a heat insulating material is not used for fixing the cover tube. The mounted portion is made of a material that can be driven into the nail, and the main material generally assumed is a xylem. However, for example, a board, a lightweight concrete block, and other materials that can be driven with a nail can be used as the attachment portion in the present invention.

  In particular, the cables are VV cables, the heat insulating material is made of one or more of foamed polyurethane, glass wool, and polystyrene foam. A structure made of a material that does not cause a chemical reaction is preferable as the present invention. The VV cable is included in the VV cable as described above.

  The tube body and fin portion that come into contact with the cables are suitably made of polyethylene as a material. Polyethylene is substantially inactive with PVC, which constitutes cables, and a material comprising one or more of polyurethane foam, glass wool, and polystyrene foam, which constitutes a heat insulating material. -There is very little even if there is no risk of reducing the mechanical performance of the sheath.

  A configuration in which the cross section of the tube body is substantially rectangular and fins are provided on the left and right sides of the substantially rectangular side is also preferable as the present invention. In the above configuration, among the left side and the right side located at both ends of one side, and the other side located at the other end of the left side and the right side, the corners connecting the left side and one side of the right side and the other side are bendable hinge parts. In addition, a hinge portion that can be bent at the intermediate portion between the left side and the right side can be folded flat. Alternatively, since the flat shape can be three-dimensionalized so that the cross section is substantially rectangular, there is an advantage that it does not take up space during storage and transportation.

  In the present invention, it is possible to adopt a configuration in which the cross section of the tube body is substantially circular, and fins are provided on the left and right of the substantially circular tangential direction. In this case, the tube body is cylindrical, but it is not impossible to fold the cylindrical tube body flat. Furthermore, it becomes easy to fold flatly by giving a hinge to folding.

  Since the present invention is configured and operates as described above, it is possible to effectively fix the cover tube even when the heat insulating material is insufficiently fixed, and at the same time, the insulation resistance against the cables. There is an effect that it is possible to prevent the deterioration of the mechanical performance of the insulator and the sheath. Further, according to the present invention, it is possible to provide a cover tube that is easy to handle and can prevent the cables from being entangled with each other.

It is a perspective explanatory view which shows the cover tube of the cables which concern on this invention with a to-be-attached part. Similarly, it relates to Example 1 of the cover tube of cables, A is a cross-sectional explanatory view, and B is a cross-sectional explanatory view showing a construction state. Similarly, it relates to the cover tube example 2 of cables, A is a cross-sectional explanatory view, and B is a cross-sectional explanatory view showing a construction state. Similarly, it relates to the cover tube example 3 of the cables, A is a folded state, B is a state where it is expanding, and C is a cross-sectional explanatory view showing a three-dimensional state. It is related with background art, A is a cross-sectional view which shows the conventional cover tube fixed using a staple, B is explanatory drawing which shows the chemical influence of the heat insulating material with respect to cables. It is related with Example 4 of the cover tube of the cables which concern on this invention, It is a perspective explanatory view which shows the cover tube which concerns on the example 4 with a to-be-attached part. Similarly, it relates to Example 4 of the cover tube of cables, A is a cross-sectional explanatory view, and B is a cross-sectional explanatory view showing a construction state. It is related with Example 5 of the cover tube of the cables which concern on this invention, It is a perspective explanatory view which shows the cover tube which concerns on the example 5 with a to-be-attached part. Similarly, it relates to the cover tube example 5 of cables, A is a cross-sectional explanatory view, and B is a cross-sectional explanatory view showing a construction state.

  Hereinafter, the present invention will be described in more detail with reference to illustrated embodiments. In FIG. 1, reference numeral 10 denotes an attached portion, and 11 denotes a heat insulating material. In the embodiment, the attached portion 10 is made of a wood portion, but as described above, materials other than the wood portion can be used. Similarly, although the heat insulating material 11 consists of foaming polyurethane, what consists of 1 or 2 or more of foaming polyurethane, glass wool, and polystyrene foam can be used other than this.

  The cover tube 20 according to the present invention is used as means for fixing the cables 12 together with the heat insulating material 11 to the attached portion 10. The cover tube 20 includes a tube main body 15 having a space 16 into which the cables 12 are inserted, and fins 17 and 18 for driving a nail extending outward in the left and right directions along the longitudinal direction of the tube main body 15. And.

  The tube body 15 in the embodiment is literally tubular, and in Example 1 shown in FIGS. 1 and 2, the cross section is formed in a substantially rectangular shape, and fin portions 17 and 18 are provided on the left and right of one side of the substantially rectangular shape. ing. The cover tube 20 is formed into a long length by extrusion molding using plastic, and is cut or wound up to a predetermined size. The cover tube 20 can also be formed by inflation molding using plastic.

  In the case of Example 1, the fin parts 17 and 18 are on the extension of one side of the tube main body 15, contact the heat insulating material 11, and provide a driving position 19 for driving the pawl 14 along the longitudinal direction. The driving position 19 can be pre-marked or punched for convenience of work.

  VV cables (vinyl insulated vinyl sheathed cables) are used as the cables 12 and have a polyvinyl chloride mixture (PVC) coating 13. The heat insulating material 11 is made of one or more of foamed polyurethane, glass wool, and polystyrene foam. Therefore, the tube main body 15 and the fin parts 17 and 18 are made of a material that does not cause a chemical reaction with foamed polyurethane, glass wool, or polystyrene foam. As the material, polyethylene (both HDPE and LDPE are acceptable) is used.

  Therefore, the cover body 20 can be fixed to the attachment portion by placing the tube main body 15 and the fin portions 17 and 18 on the surface of the heat insulating material 11 and driving the nail 14 into the fin portions 17 and 18 (see FIG. 2B). ). At the place where the cover tube 20 is fixed, the heat insulating material 11 is compressed by the width. It is known that the bubble volume is reduced in the heat insulating material 11 due to the compression, and strictly speaking, the heat insulation effect tends to decrease. However, the reduction in the bubble volume according to the present invention is slight and has an influence on the heat insulation effect. Few.

  Since the cross-sectional shape of the tube main body is not limited to a rectangle, FIG. 3 shows a second modified example. Example 2 has a tube body 21 having a substantially circular cross section, and fin portions 23 and 24 are provided on the left and right sides of the substantially circular tangential direction. The inside of the tube body 21 is a space 22 having a circular cross section, and the cables 12 are inserted therein (see FIG. 3A). As in Example 1, the tube body 21 and the fin portions 23 and 24 are made of a material that does not chemically react with the foamed polyurethane, glass wool, or polystyrene foam as a heat insulating material.

  Also in Example 2, the cover tube 25 can be fixed to the attachment portion by placing the tube main body 21 and the fin portions 23 and 24 on the surface of the heat insulating material 11 and driving the nail 14 into the fin portions 23 and 24 ( (See FIG. 3B). Since the tube main body 21 is a circular tube, there is an advantage that, when the diameter is the same as one side of Example 1, the molding material is small and it is difficult to be caught during construction. In addition, about the effect | action and heat insulation tendency of Example 2, it states that it is the same as that of Example 1, and detailed description is abbreviate | omitted.

  Further, the folding example 3 will be described. The tube body 31 of the example 3 also has a substantially rectangular cross section, and fin portions 27 and 28 are provided on the left and right sides of a substantially rectangular side 29 ( (See FIG. 4C). Among the left side and right side located at both ends of the one side 29 and the other side 32 located at the other end of the left side and right side, a corner hinge that can bend the corner connected to the one side 29 and the other side 32 of the left side and the right side. It is a portion 33 and is an intermediate hinge portion 34 that can be bent at the intermediate portion between the left side and the right side.

  The corner hinge portion 33 and the intermediate hinge portion 34 are made of thin-walled hinges. Except for the hinge portion 33 ′ with one side 29, all of them are on the outer surface and bend like a mountain fold (FIG. 4B). Therefore, in a state where the cables 12 are not used for fixing, the flat state can be maintained as shown in FIG. 4A, so that a space is not taken up, and handling such as winding and storage and transportation is also possible. By extending all the hinge parts 33 and 34, the space 26 is formed inside, and the cover tube 30 having a substantially rectangular cross section is formed.

  The cover tube 100 according to Example 4 can be used as means for fixing the cables 12 together with the heat insulating material 11 to the attached portion 10. The cover tube 100 has a tube main body 150, and the inside thereof is divided into a first space 160 and a second space 161 by a wall portion 120, and the two cables 12 are connected to the first space 160. It can be inserted into the void 160 and the second void 161, respectively. In addition, fin portions 170 and 180 for driving a nail extending outward in the left-right direction along the longitudinal direction of the tube main body 150 are provided. That is, a cover tube for fixing the cables 12 together with the heat insulating material 11 to the attached portion, and a wall portion 120 that bisects the first space 160 and the second space 161 into which the cables 12 are inserted; Is provided with a fin body 170 and 180 for driving a nail extending outward in the left and right direction along the longitudinal direction of the tube main body 150.

  Moreover, the tube main body 150 according to Example 4 in the embodiment is literally tubular, and as shown in FIGS. 6 and 7, the cross-section of the tube main body 150 has a fourth side 151 and its fourth one. The fourth other side 152, the first side 153, and the second side 154, which are opposed to the side 151, are formed in a substantially rectangular shape, and the inside thereof is the first side 153 and the second side 154. The interior is partitioned by a substantially parallel wall 120 so that fins 170 and 180 are provided on the left and right of the substantially rectangular fourth side 151. The cover tube 100 is formed into a long length by extrusion molding using plastic, and is cut or wound up to a predetermined size. Further, the cover tube 100 according to Example 4 can be formed by inflation molding using plastic.

  In the case of the cover tube 100 according to the fourth example, the fin portions 170 and 180 are on the extension of the fourth first side 151 of the tube main body 150, touch the heat insulating material 11, and drive the nail 14 along the longitudinal direction. For this purpose, a driving position 190 is provided. The driving position 190 can be previously marked for convenience of operation or a hole can be formed.

  Further, the difference between the cover tube 200 of Example 5 and the cover tube of Example 4 is the extension of the fifth first side 251 of the tube main body 250, and the fifth first side 251 in contact with the heat insulating material 11. In addition to the fin portions 270 and 280 disposed in the tube, the tube extends along the longitudinal direction of the tube body 250 on the extension line of the fifth other side 252 opposite to the fifth one side 251 and extends to the left and right. The second fin portion 271 or 281 for driving the protruding nail is provided. That is, the cross section of the tube body 250 is substantially rectangular by the fifth first side 251, the fifth other side 252, the fifth first side 253, and the fifth second side 254. The fins 270 and 280 are provided on the left and right sides of the fifth first side 251, and the second fins 271 are provided on the fifth other side 252 facing the fifth first side 251. 281 is provided. In other words, in addition to the fin portions 270 and 280 arranged on the fifth first side 251 in contact with the heat insulating material 11, the fifth first side 251, the first space 260 and the second space 261 are sandwiched therebetween. Second fin portions 271 and 281 are provided on an extension line of the fifth other side 252 facing each other.

  The tube main body 250 according to Example 5 in the embodiment is literally tubular, and in Example 5 shown in FIGS. 8 and 9, the cross-section of the tube main body 250 is the fifth side 251 and the first side 251 as described above. 5, the fifth other side 252 facing the one side 251, the first side 253, and the second side 254 are formed in a substantially rectangular shape, and the inside thereof is the first side 253 and the second side 254 and the substantially parallel wall 220 divide the interior into two, and fin portions 270 and 280 are provided on the left and right of the substantially rectangular fifth side 251. Further, second fin portions 271 and 281 are provided on an extension line of the fifth other side 252 facing the fifth one side 251. Therefore, the cross section of the cover tube 200 is configured point-symmetrically. In addition, it has the tube main body 250, The inside is divided into the 1st space 260 and the 2nd space 261 by the wall part 220, The point which can insert the two cables 12 each is Is similar to Example 4.

  As described above, in addition to the fin portions 270 and 280 arranged on the fifth first side 251 that are on the extension of the fifth first side 251 of the tube main body 250 and are in contact with the heat insulating material 11, the fifth Since the second fins 271 and 281 are provided on the extended line of the fifth other side 252 facing one side 251, the shape becomes point-symmetric when the cover tube 200 is molded. Conditions are stable.

  Further, the fin portions 270 and 280 are on the extension of the fifth first side 251 of the tube main body 250 and are in contact with the heat insulating material 11 and provide a driving position 290 for driving the pawl 14 along the longitudinal direction. . This driving position 290 can be pre-marked or punched for convenience of work. Although not shown, the second fin portions 271 and 281 also provide a driving position for driving the nail 14 along the longitudinal direction. The driving position can be pre-marked or a punched hole for convenience of work. Accordingly, since the cross-sectional shape of the cover tube 200 of Example 5 is symmetrical as described above, the fifth other side 252 in contact with the heat insulating material 11 as well as the fifth other side 252 is in contact with the heat insulating material 11. It can also be done (not shown).

  Further, a VV cable (vinyl insulated vinyl sheath cable) is used as the cables 12 and has a coating 13 of a polyvinyl chloride mixture (PVC). The heat insulating material 11 is made of one or more of polyurethane foam, glass wool, polystyrene foam, paper foam material, and polypropylene / polyethylene foam material. Therefore, in addition to the tube main body 150 and the fin portions 170 and 180 and the tube main body 250 and the fin portions 270 and 280, on the extension line of the fifth other side 252 opposite to the fifth first side 251. The arranged second fins 271 and 281 are made of a material that does not chemically react with foamed polyurethane, glass wool, polystyrene foam, paper foamed material, or polypropylene / polyethylene foamed material. As the material, polyethylene (both HDPE and LDPE are acceptable) is used. Further, the tube body 15 and the fin portions 17 and 18 and the tube body 21 and the fin portions 23 and 24 do not chemically react with not only polyurethane foam and glass wool, but also paper foam material and polypropylene / polyethylene foam material. Consists of materials.

  Moreover, the tube main body 150 and the fin parts 170 and 180 are applied to the surface of the heat insulating material 11, and the cover tube 100 can be fixed to a to-be-attached part by driving the nail 14 into the fin parts 170 and 180 (refer FIG. 7B). ).

  Further, the fact that the tube body 250 and the fin portions 270 and 280 are applied to the surface of the heat insulating material 11 and the nail 14 is driven into the fin portions 270 and 280 can fix the cover tube 200 to the attached portion 10. (See FIG. 9B), the second fins 271 and 281 are applied to the surface of the heat insulating material 11, and the nail 14 is driven into the second fins 271 and 281 to cover the attached portion. 200 can also be fixed. As described above, since the cross-sectional shape is so-called point symmetry, either the fin portions 270, 280 or the second fin portions 271, 281 can be arbitrarily attached to the attachment portion 10 (not shown).

  At the place where the cover tubes 100 and 200 are fixed, the heat insulating material 11 is compressed by the width. It is known that the bubble volume is reduced in the heat insulating material 11 due to the compression, and strictly speaking, the heat insulation effect tends to decrease. However, the reduction in the bubble volume according to the present invention is slight and has an influence on the heat insulation effect. Few.

  Thus, the cover tubes 20, 25, 30, 100, 200 of the cables according to the present invention have fin portions 17, 23, which protrude outward from the left and right ends of the tube bodies 15, 21, 31, 150, 250. 27, and fin portions 170 and 180, fin portions 270 and 280, and second fin portions 271 and 281, and the above portion is fixed to the attached portion 10 together with the heat insulating material 11 using the nail 14. is there. In many cases, the cover tubes 20, 25, 30, 100, and 200 are attached to the outer surface of the heat insulating material 11 as shown in the figure, but may be attached to the inner surface of the heat insulating material 11 depending on circumstances.

  Further, the term “pawl” used in the present invention has a function of driving and contacting a member, and is not limited to an appearance or a specific form. However, it is desirable to be made of metal in consideration of the condition that it is driven into a wooden part constituting the wall surface to support the load of cables and the thermal insulation effect is not lowered excessively. For example, the general structure shown in FIG. It can be said that axial nails, U-shaped nails, metal staples, and the like are suitable.

DESCRIPTION OF SYMBOLS 10 To-be-attached part 11 Heat insulating material 12 Cables 13 Coating | cover 14 Fastener 15, 21, 31, 150, 250 Tube main body 16, 22, 26 Space
17, 18, 23, 24, 27, 28, 170, 180, 270, 280 Fin portion 19 Driving position 20, 25, 30, 100, 200 Cover tube 29 One side 32 Other side 33, 33 'Corner hinge portion 34 Middle Hinge part 120 220 Wall part 151 4th 1st side 152 4th other side 160 260 1st space 161 261 2nd space 251 5th 1st side 252 5th other side

Claims (11)

A cover tube for fixing cables together with a heat insulating material to an attached portion,
A tube body having a space for inserting cables therein;
A cable cover tube, comprising: a fin portion for driving a nail extending outward in the longitudinal direction along the longitudinal direction of the tube body. Cables are VV cables, and the heat insulating material is made of one or more of polyurethane foam, glass wool, polystyrene foam,
2. The cover tube for cables according to claim 1, wherein the tube main body and the fin portion are made of a material that does not cause a chemical reaction with foamed polyurethane, glass wool, or polystyrene foam as a heat insulating material. 3. The cover tube for cables according to claim 1 or 2, wherein the tube main body and the fin portion in contact with the cables are made of polyethylene. The cover tube for cables according to claim 1, wherein the tube body has a substantially rectangular cross section, and fins are provided on the left and right sides of the substantially rectangular side. The cross section of the tube body is almost rectangular, and fins are provided on the left and right of one side of the substantially rectangular shape.
Among the left side and the right side located at both ends of the one side, and the other side located at the other end of the left side and the right side, the corners connecting the left side and one side of the right side and the other side are bendable hinge parts, The cover tube for cables according to claim 4, wherein the cover tube is a hinge portion that can be bent at an intermediate portion between the left side and the right side. 2. A cover tube for cables according to claim 1, wherein the tube body has a substantially circular cross section, and fins are provided on the left and right of the substantially circular tangential direction. The cables are VV cables, and the heat insulating material is made of one or more of polyurethane foam, glass wool, polystyrene foam, paper foam material, polypropylene / polyethylene foam material,
2. The cover tube for cables according to claim 1, wherein the tube main body and the fin portion are made of a material that does not chemically react with foamed polyurethane, glass wool, polystyrene foam, paper foamed material, or polypropylene / polyethylene foamed material as a heat insulating material. A cover tube for fixing cables together with a heat insulating material to an attached portion,
A tube body having a wall portion that bisects the first space and the second space for inserting cables;
A fin for driving in a nail extending outwardly from side to side along the longitudinal direction of the tube body;
A cable cover tube characterized by comprising: The tube body has a substantially rectangular cross section, the fins are provided on the left and right of one side of the substantially rectangular shape, and the left and right sides along the longitudinal direction of the tube body are provided on the other side opposite to the one side. The cable cover tube according to claim 8, wherein a second fin portion is provided for driving the nail extending toward the direction. The cables are VV cables, and the heat insulating material is made of one or more of polyurethane foam, glass wool, polystyrene foam, paper foam material, polypropylene / polyethylene foam material,
10. The cover tube for cables according to claim 8 or 9, wherein the tube main body and the fin portion are made of a material that does not chemically react with foamed polyurethane, glass wool, polystyrene foam, paper foamed material, or polypropylene / polyethylene foamed material as a heat insulating material. 11. The cable cover tube according to claim 8, wherein the tube main body and the fin portion in contact with the cables are formed of polyethylene as a material.

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