JP2008117615A - Water cut-off structure and method between electric wire strands - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water cut-off structure between electric wire strands and a water cut-off method between electric wire strands, capable of causing the workability to be improved by shortening the hardening time and being produced without waste at high efficiency, which provides the good recycle property. <P>SOLUTION: In the water cut-off structure between electric wire strands and the water cut-off method between electric wire strands, the water cut-off structure between electric wire strands cuts off between strands 12 of electric wires 10 with strands 12 housed in a covering section 11. The strands 12 with the covering section 11 removed are immersed in a resin material mixed with heating sources and can be deposited due to irradiation of infrared light, and then the infrared light is irradiated to the resin material at a predetermined position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a waterproof structure between wire strands and a method of stopping water between wire strands for stopping water between strands housed in a covering portion of a wire.

  As an example of the waterproof structure between the wire strands, as shown in FIG. 5, the terminal core wire 52 of the wire 51 is fixed by resistance welding to form the wire terminal connection portion 53, and the terminal core wire 52 and It is known that the electric wire 51 is covered with the heat-shrinkable tube 54 and then immersed in the thermoplastic resin 55 so that the thermoplastic resin 55 penetrates between the terminal core wires 52 (see, for example, Patent Document 1). .

JP 2000-341841 A

  However, the wire-to-wire waterproof structure disclosed in Patent Document 1 requires a long curing time for curing the thermoplastic resin 55, and thus it is difficult to reduce the number of steps. In addition, since the thermoplastic resin 55 may adhere to other members during the curing of the thermoplastic resin 55, there is a concern about contamination during work, and the thermoplastic resin 55 is wasted. Furthermore, in the separation work at the time of recycling, the electric wire 51 that is a copper part and the heat-shrinkable tube 54 that is a resin part must be separated, so that the recyclability is not good.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to improve the workability by shortening the curing time, and to produce a highly recyclable electric wire that can be produced with high efficiency without waste. An object of the present invention is to provide an inter-element water-stop structure and an electric-wire inter-wire water stop method.

  1) The wire-to-wire waterproofing structure according to the present invention is a wire-to-wire waterproofing structure that stops water between the wires of an electric wire with the strands inside the sheath, and the sheath is removed. The element wire is immersed in a resin material that is mixed with a heat generation source and can be welded with light irradiation, and then light is irradiated to a predetermined position of the resin material.

  According to the invention described in 1) above, by using a resin material that can be welded by being irradiated with light (for example, infrared light), between the strands that require welding, the strand and the covering portion, Water can be applied by welding only in a short time. Thereby, since much hardening time is not required, workability | operativity can be made favorable by shortening hardening time. Further, since the water stop treatment can be performed in a short time, a water stop structure can be obtained with high efficiency without waste. And since only the electric wire which is a copper part can be extracted only by melt | dissolving resin material at the time of recycling, it becomes rich in recyclability.

  2) Moreover, the water stopping method between the electric wire strands according to the present invention is a water stopping method between the electric wire strands for stopping water between the strands of the electric wire having the strands embedded in the covering portion. The method includes a step of immersing the removed wire in a resin material mixed with a heat generation source and capable of being welded with light irradiation, and a step of irradiating light on a predetermined position of the resin material.

  According to the invention described in 2) above, by performing a step of irradiating light (for example, infrared light) to a predetermined position of the resin material, between the strands that require welding and between the strand and the covering portion Then, water can be stopped by welding only in a short time. Thereby, since much hardening time is not required, workability | operativity can be made favorable by shortening hardening time. In addition, since the water stop treatment can be performed in a short time, a highly efficient water stop method can be executed without waste. And since only the electric wire which is a copper part can be extracted only by melt | dissolving resin material at the time of recycling, it becomes rich in recyclability.

  According to the water stopping structure between the wire strands and the water stopping method between the wire strands according to the present invention, it is difficult to reduce the man-hour because a long curing time is required, and there is a concern that dirt during work is a concern. It is possible to solve the problem that the recyclability is not good, and the workability can be improved by shortening the curing time, and it can be made with high efficiency without waste, and it is rich in recyclability. An effect is obtained.

  Hereinafter, a plurality of preferred embodiments according to the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIGS. 1 and 2 show a first embodiment of a water blocking structure between wire strands and a water stopping method between wire strands according to the present invention, and FIG. 1 shows a wire strand according to the first embodiment of the present invention. The front view of the 1st process of the water stop method between wire strands in the water stop structure and the water stop method between wire strands, FIG. 2 is the front view of the 2nd process of the water stop method between wire strands.

  As shown in FIG. 1, the two wire 10 in which the wire 12 that is a conductive member is housed in the resin covering portion 11 is provided in the water blocking structure between the wires that is the first embodiment of the present invention. Used.

  In the first step of the water stopping method between the electric wires shown in FIG. 1, the covering portions 11 of the electric wires 10 are removed and the respective wires 12 are bundled and then immersed in the resin material 30. The resin material 30 is a gel-like resin that is mixed with irradiation of light (for example, infrared light 40) shown in FIG. 31 is stored. By soaking in the resin material 30, the resin material 30 penetrates into the exposed wire 12 and the covering portion 11.

  In the second step of the inter-wire strand water stopping method shown in FIG. 2, after the electric wire 10 is pulled up from the resin material 30, the resin material 30 is irradiated with infrared light 40. The infrared light 40 has multiple wavelengths and is irradiated from the laser irradiation port 41. The laser irradiation ports 41 are electrically connected to a laser generating unit (not shown), and between the strands 12 that need to be welded and between the strands 12 and the covering portion 11 by an irradiation port moving unit (not shown). The infrared light 40 is irradiated between the position A1 and the position A2 that are between. Irradiation with the infrared light 40 is, for example, a short time of about several seconds to several tens of seconds.

  The resin material 30 penetrating between the strands 12 is irradiated with the infrared light 40 between the strands 12 and between the strand 12 and the covering portion 11 from the position A1 to the position A2. The resin material 30 that is melted and welded to each of the strands 12 and that has penetrated between the strand 12 and the covering portion 11 covers the covering portion 11 and the strand 12 after being melted. And then cured. Thereby, the water stop structure between the wire strands which water-stop-processed between the strands 12 and between the strand 12 and the coating | coated part 11 can be obtained.

  In addition, in order to prevent the resin material 30 from adhering to the joint portion 13 at the tip of the wire 12 to be electrically connected, a wire that needs to be welded using a nozzle or the like instead of dripping. The resin material 30 may be applied only between the wires 12 and between the wire 12 and the covering portion 11.

  As described above, according to the water blocking structure between the wire strands of the present embodiment, by using the resin material 30 that can be welded by being irradiated with the infrared light 40, between the strands 12 that require welding. Further, it is possible to perform water stop by welding only between the wire 12 and the covering portion 11 in a short time. Thereby, since much hardening time is not required, workability | operativity can be made favorable by shortening hardening time. Further, since the water stop treatment can be performed in a short time, a water stop structure can be obtained with high efficiency without waste. And since only the electric wire 10 which is a copper part can be extracted only by melt | dissolving the resin material 30 at the time of recycling, it becomes rich in recyclability.

  Moreover, according to the water stopping method between the wire strands of the present embodiment, by performing a step of irradiating the infrared ray 40 to a predetermined position of the resin material 30, between the strands 12 and the strands 12 that require welding. Water can be applied by welding only between the cover 11 and the covering portion 11 in a short time. Thereby, since much hardening time is not required, workability | operativity can be made favorable by shortening hardening time. In addition, since the water stop treatment can be performed in a short time, a highly efficient water stop method can be executed without waste. And since only the electric wire 10 which is a copper part can be extracted only by melt | dissolving the resin material 30 at the time of recycling, it becomes rich in recyclability.

(Second Embodiment)
Next, with reference to FIG.3 and FIG.4, 2nd Embodiment of the electric wire water stop structure and electric wire water stop method of this invention is described. FIG. 3 is a front view of a first step of a method for waterproofing between wire strands in a structure for waterproofing between wire strands and a method for waterproofing between wire strands according to a second embodiment of the present invention, and FIG. It is a front view of the 2nd process of a water stop method. Note that, in the following second embodiment, components that are the same as those in the above-described first embodiment, functionally similar components, and the like are simplified by adding the same reference signs or equivalent signs in the drawings, or Omitted.

  As shown in FIG. 3, the wire-to-wire waterproofing structure according to the second embodiment of the present invention has the electric wire 14 from which a predetermined intermediate portion of the covering portion 11 is removed and the end portion of the covering portion 11 removed. Wire 15 is used.

  In the first step of the water stopping method between the wire strands shown in FIG. 3, the strand 16 from which the intermediate portion of the covering portion 11 of the wire 14 is removed and the strand from which the end portion of the covering portion 11 of the wire 15 is removed. 17 is immersed in the resin material 30. By soaking in the resin material 30, the intermediate portion of the covering portion 11 of the electric wire 14 is removed and exposed between the strands 16, between the strand 16 and the covering portion 11, and the covering portion 11 of the electric wire 15. The resin material 30 is infiltrated into the space between the strands 17 that are exposed by removing the end portions thereof, and between the strand 17 and the covering portion 11.

  In the second step of the water stopping method between the wire strands shown in FIG. 4, the wire 14 and the wire 15 are pulled up from the resin material 30, and then the wire 17 of the wire 15 is bundled with the wire 17 of the wire 14, Each resin material 30 is irradiated with light (for example, infrared light 40). The laser irradiation port 41 for irradiating the infrared light 40 is formed between an element wire 16 on one side that needs to be welded and between the element wire 16 on the one side and the covering portion 11 by an irradiation port moving means (not shown). Infrared light 40 is irradiated from a certain position A3 to position A4. Further, the position from the position A5 is between the strands 17, between the strand 17 and the covering portion 11, between the other strand 16, and between the other strand 16 and the covering portion 11. Infrared light 40 is irradiated by A6. Irradiation with the infrared light 40 is, for example, a short time of about several seconds to several tens of seconds.

  Between the element wires 16 on one side, the position A3 to the position A4 between the element wires 16 and the covering portion 11 on one side, between the element wires 17, between the element wires 16 on the other side, and the other side Infrared light 40 is irradiated from position A5 to position A6 between the element wire 16 and the covering portion 11. As a result, the resin material 30 penetrating between the strands 16 and between the strands 17 is melted and then welded to each of the strands 16 and 17. The resin material 30 permeated between the strand 17 and the covering portion 11 is melted and then welded so as to cover the strand 16 and the covering portion 11, the strand 17 and the covering portion 11. After being cured. Therefore, between the strands 16 on one side, between the strands 16 on one side and the covering portion 11, between the strands 17, between the strands on the other side 16, and on the other side strand 16 and the covering portion 11, It is possible to obtain a water-stop structure between the wire elements in which the gap between the wires is water-stopped.

  In addition, in order to prevent the resin material 30 from adhering to the joint portion 18 at the center of the strand 16 and the joint portion 19 at the tip of the strand 17, which are to be electrically connected, instead of dripping. Then, using a nozzle or the like, between the strands 16 on one side, between the strand 16 on one side and the covering portion 11, between the strands 17, and between the strand 17 and the covering portion 11. The resin material 30 may be applied only between the wire 16, between the other strand 16, and between the other strand 16 and the covering portion 11.

  Since the present embodiment has the same effects as the first embodiment described above, description thereof is omitted. In particular, according to the present embodiment, the electric wire 14 from which the intermediate portion is removed, and the end portion Only the strands 16 and 17 with the electric wire 15 from which is removed can be intensively water-stopped. Moreover, since the electric wires 14 and 15 which have been subjected to the water stop treatment are integrally formed of the resin material 30, it is possible to carry them to other processes in units of one part.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, it is needless to say that only a portion that requires welding can be stopped even in a plurality of wires such as three or four wires instead of the two shown in the drawing.

It is a front view of the 1st process of the waterproofing method between electric wire strands in the waterproofing structure between electric wire strands and the waterproofing method between electric wire strands concerning a 1st embodiment of the present invention. It is a front view of the 2nd process of the waterproofing method between electric wire strands. It is a front view of the 1st process of the waterproofing method between electric wire strands in the waterproofing structure between electric wire strands and the waterproofing method between electric wire strands concerning a 2nd embodiment of the present invention. It is a front view of the 2nd process of the waterproofing method between electric wire strands. It is sectional drawing of the conventional water stop structure between wire strands.

Explanation of symbols

10, 14, 15 Electric wire 11 Covering portion 12, 16, 17 Wire 30 Resin material 40 Infrared light

Claims (2)

A wire-to-wire water-stop structure for water-stopping between the wires of the wire in which the wires are embedded in the covering portion,
The wire from which the covering portion is removed is immersed in a resin material in which a heat source is mixed and can be welded with light irradiation, and then light is irradiated to a predetermined position of the resin material. Inter-strand waterproof structure. A wire-to-wire water-stop method for water-stopping between the wires of an electric wire with a wire inside the sheath,
A step of immersing the wire from which the covering portion has been removed, in a resin material that is mixed with a heat source and can be welded with light irradiation;
Irradiating light to a predetermined position of the resin material;
A method for stopping water between wire elements, comprising:

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