JP2017121113A - Protective tube with shield function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective tube with shielding function which coating, encapsulating and protecting single or multiple electric cables, and protects various interference from outside and to the outside.SOLUTION: A protective tube 1 with a shield function comprises a flexible outer skin (base layer 2) which is made of a thin synthetic resin material and has high insulating property, and an inner skin (thin copper layer 3) having conducting property. The inner skin is laminated on the inner surface of the outer skin to constitute a protective tube of a flat-plate type laminate structure, and a ground wire 12 made of a material which can be grounded is connected to the inner skin. When the protective tube is used so as to cover the electric cable 6, both ends of the outer and inner skins are overlapped to constitute an opening/closing portion. The opening/closing portion is hermetically sealed by folding the outer skin and inner skin at a position away from the opening/closing portion.SELECTED DRAWING: Figure 3

Description

  The present invention encapsulates one or a plurality of electric cables, protects against interference from outside electromagnetic waves, noise, radiated waves, radiation, etc. by a covering material, prevents intrusion of dust, dust, The present invention relates to a protective tube that prevents electromagnetic waves, noise, heat rays, radiated waves, radiation, and the like emitted from electric wires from being emitted to the outside. The present invention also relates to a protective tube with a shielding function that can be covered later even when terminals at both ends of the electric wire are joined to other members.

  Various types of protective tubes have been conventionally used as a protective tube having the above-described function for encapsulating one or a plurality of electric cables. For example, as a product having an opening / closing part, a hook, magic tape (registered trademark), double-sided tape, zipper, etc. are used in the opening / closing part, and a cable shield material in which a highly conductive material is coated, adhered and laminated inside In addition, there is a contraction tube that is used by inserting an electric wire into the inner hole of the tube in a diameter-expanded state by a method in which a protective material is spirally wound around the outer periphery of the cable, and contracting after use.

  The various tubes mentioned above are intended to achieve protection of electric cables and interference prevention from electromagnetic waves, noise, radiated waves, radiation, dust, dust, etc. There is. The open / close system using the hook mechanism has the advantages of easy opening and closing and easy handling, but has a problem with sealing, and also has problems with dust, dust intrusion and shielding properties. Magic tape (registered trademark) type can be easily opened and closed, but has a problem in sealing and shielding properties. Double-sided tape is superior in adhesion and shielding properties, but it has a problem of durability due to its relatively rapid deterioration due to weathering. There is also a problem with sex. The zipper method is excellent in sealing property, shielding property, and workability, but the zipper part may not be a problem in the outer bending, but may be opened in the inner bending. The shrink tube is not easy to insert and wire the electric cable inserted inside the shrink tube, and the mesh material is used for the conductive material, but the mesh density is not constant due to the shrinkage rate, and the shield There is a problem in reliability of performance, and there is a problem that after shrinking, the diameter cannot be expanded except by cutting.

  The present invention solves the above-described problems of each tube, and protects one or a plurality of electric cables by enclosing them and protecting them from various external and external interferences. The purpose is to provide.

  In order to achieve the above object, a protective tube with a shielding function according to the present invention comprises a flexible outer skin made of a thin synthetic resin material and having a high insulating property, and an endothelium having conductivity, Is formed on the inner surface of the outer skin to form the protective tube having a flat laminated structure, and a ground wire made of a groundable material is connected to the inner skin of the protective tube to cover the electric cable. When the protective tube is used, both ends of the outer skin and the inner skin are overlapped to form an opening / closing portion, and the opening / closing portion is bent by bending the outer skin and the inner skin at a position separated from the opening / closing portion. It is hermetically sealed.

  In the present invention, the inner skin and the outer skin are preferably laminated by any one of fusion, vapor deposition, heat deposition and adhesion, or a combination thereof.

  In the present invention, the outer skin is preferably made of a single substance of polyvinyl chloride, polyethylene, polyimide or polyester or a composite material thereof. Moreover, it is preferable that the said endothelium consists of metal foil, a metal plate, a metal mesh, a carbon mesh, nanocarbon, a hybrid fiber, or a hybrid mesh.

  In the present invention, it is preferable that the material of the ground wire is a thin or thin flat or round braided wire, single wire, bare wire, or flat plate, but in consideration of damage reduction effect in the event of lightning strike For this, it is preferable to adopt a material having a high conductivity effect instead of being thin or thin.

  In the present invention, it is preferable that the ground wire can also be used as an auxiliary material for opening and closing the opening / closing portion.

  In the present invention, the bending is preferably performed by heat-treating the outer skin.

  According to the protective tube with a shield function of the present invention, one or a plurality of electric cables are covered and protected, the electric wires are shielded from external electromagnetic radiation, and further, the radiation generated by the electric wires leaks out of the protective tube. Can be prevented. Further, even when the electric wire is connected to an existing structure, it can be easily attached around the electric wire.

  In addition, one or a plurality of electric cables can be easily stored, covered, and opened, and an easy to handle and inexpensive configuration can be provided. Moreover, it is excellent in flexibility, flexibility, sealing property, and shielding performance, and can further reduce damage caused by lightning.

  In addition, the protective tube is formed by opening and closing the outer skin and the inner skin by overlapping the outer skin by bending the outer skin, so no special tools are required and there is no deterioration, so that the sealing tube is securely sealed and shielded. It is possible to prevent the occurrence of various external troubles due to the influence of the included electric cable. Furthermore, since the outer skin and the opening / closing part are made of a material or a structure that does not generate static electricity or dust, it can be used near a precision machine or in a place where a clean environment is required such as a clean room, a medical facility, a computer facility, or an IC manufacturing facility. .

It is a perspective view which shows the whole structure in the open state of the most desirable Example of the protection tube with a shield function of this invention. It is a top view which shows the back covering state of the electric wire group by the Example of FIG. It is sectional drawing which shows the state which coat | covered the electric wire group with the tube of the Example of FIG. It is a top view which shows the state which coat | covered the electric wire group by which both ends are fixed to the other member with the protective tube with a shield function of this invention.

  Hereinafter, the most preferred embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a state before use of an embodiment of a protective tube with a shielding function of the present invention, FIG. 2 is a plan view showing a state in which a number of electric wires are covered with the protective tube according to the embodiment of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a plan view showing a state in which the protective tube of the embodiment of the present invention is applied to an electric wire group having both ends fixed to other members.

  As shown in FIG. 1, the protective tube 1 with a shielding function of the present invention comprises a base layer 2 that becomes an outer skin when used and a conductive thin copper layer 3 that becomes an inner skin when used. The thin copper layer 3 is connected to a ground wire 12 at one end thereof. The thin copper layer 3 encloses the ground wire 12 and is bent to form the protruding portion 7.

  In use, the end of the thin copper layer 3 side in which the ground wire 12 and the protruding portion 7 are formed with the thin copper layer 3 inside as shown in FIGS. The ends of the protective tube 1 are overlapped so that the portion is on the inside. At this time, the base layer 2 and the thin copper portion 3 are formed into a cylindrical shape, and both end portions overlap with a sufficient margin. And this cylinder is pushed and bent so that it may become flat form or ellipse shape, and the base layer 2 is bend | folded by heat processing in the position away from the overlapping of both end surfaces. As a result, the bent portions 4 and 5 are formed, the protective tube 1 becomes flat or elliptical, and a closed opening / closing portion is formed by overlapping both ends. If necessary, enclose the wire group from the opening / closing part. In this way, the use state of the protective tube 1 is formed. 2 and 3, the bent portions 4 and 5 are formed. However, only one of the bent portions 4 and 5 may be formed by bending only one end by heat treatment.

  As the base layer 2 of the protective tube 1 of the present invention, a single substance of polyvinyl chloride, polyethylene, polyimide, polyester or a composite material thereof excellent in heat resistance, flexibility and electrical insulation is used.

  On the other hand, as the endothelium, in addition to the conductive thin copper layer 3 in this embodiment, a metal foil, a metal plate, a metal mesh, a carbon mesh, nanocarbon, a hybrid fiber, or a hybrid mesh can be used.

  The base layer 2 and the thin copper layer 3 can be laminated and integrally formed by any one of fusion, vapor deposition, heat deposition and adhesion, or a combination thereof without using an adhesive.

  FIG. 4 is a diagram illustrating a state in which the electric wire group is covered with the protective tube 1 with a shielding function when the terminals 8 and 9 at both ends of the electric wire 6 are already connected to other members 10 and 11 such as a motor. Since the protective tube 1 with a shield function is rounded into a tube shape that is opened in a flat plate shape, it can be easily mounted even if the terminals 8 and 9 are fixed to the members 10 and 11. Moreover, since the protective tube 1 with a shield function has flexibility and flexibility, it is wound around the outer periphery of the electric wire group. Moreover, since the protective tube 1 with a shielding function of the present embodiment has a shielding property, radio wave interference is prevented.

DESCRIPTION OF SYMBOLS 1 Protection tube with a shield function 2 Base layer 3 Thin copper layer 4 Bending part 5 Bending part 6 Electric wire 7 Protruding part 8 Terminal 9 Terminal 10 Member 11 Member 12 Ground wire

Claims (8)

  It is composed of a thin outer wall made of a synthetic resin material having a high insulating property and a conductive inner skin, and the inner skin is laminated on the inner surface of the outer skin to form a flat laminated protective tube. In addition, a ground wire made of a material capable of grounding is connected to the inner skin of the protective tube, and when the protective tube is used to cover an electric cable, both ends of the outer skin and the inner skin are overlapped. A protective tube with a shielding function, which constitutes an opening / closing part, and the opening / closing part is hermetically sealed by bending the outer skin and the inner skin at a position separated from the opening / closing part.   The protective tube with a shielding function according to claim 1, wherein the inner skin and the outer skin are laminated by any one of fusion, vapor deposition, heat deposition and adhesion, or a combination thereof.   The protective tube with a shield function according to claim 1 or 2, wherein the outer skin is made of a single substance of polyvinyl chloride, polyethylene, polyimide, or polyester, or a composite material thereof.   The protective tube with a shielding function according to any one of claims 1 to 3, wherein the inner skin is made of a metal foil, a metal plate, a metal mesh, a carbon mesh, nanocarbon, a hybrid fiber, or a hybrid mesh.   The protective tube with a shield function according to any one of claims 1 to 4, wherein a material of the ground wire is a thin or thin flat or round braided wire, a single wire, a bare wire, or a flat plate.   The protective tube with a shield function according to any one of claims 1 to 4, wherein a material of the ground wire is a material having a high conductivity effect.   The protective tube with a shield function according to any one of claims 1 to 6, wherein the ground wire can also be used as an auxiliary material for opening and closing the opening / closing portion.   The protective tube with a shield function according to any one of claims 1 to 7, wherein the bending is performed by heat-treating the outer skin.

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