WO2019146208A1 - Heat-shrink tube equipped electrical cable - Google Patents

Heat-shrink tube equipped electrical cable Download PDF

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Publication number
WO2019146208A1
WO2019146208A1 PCT/JP2018/040985 JP2018040985W WO2019146208A1 WO 2019146208 A1 WO2019146208 A1 WO 2019146208A1 JP 2018040985 W JP2018040985 W JP 2018040985W WO 2019146208 A1 WO2019146208 A1 WO 2019146208A1
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WO
WIPO (PCT)
Prior art keywords
heat
shrinkable tube
electric wire
terminal
wire
Prior art date
Application number
PCT/JP2018/040985
Other languages
French (fr)
Japanese (ja)
Inventor
宏介 蓮井
須藤　博
幸康 坂本
佑樹 矢部
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2019146208A1 publication Critical patent/WO2019146208A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve

Definitions

  • the present invention relates to a technique for preventing corrosion of a connection portion between a terminal and a wire.
  • Patent Document 1 discloses a technique of covering a connection portion between a terminal and an electric wire with a heat-shrinkable tube with an adhesive to prevent different metal contact corrosion in the connection portion.
  • the terminal is connected to the end of the wire, and one of both ends of the heat-shrinkable tube is located in the middle of the terminal and the other is located in the middle of the wire.
  • the terminals may be connected to the middle of the wire. Even in this case, if the terminal and the core wire of the wire are made of different metals or the like, it is necessary to prevent corrosion of the connected portion depending on the location of the wire with terminal.
  • an object of this invention is to provide the technique which can carry out the corrosion prevention of the connection part of a terminal and an electric wire favorably.
  • the heat-shrinkable tube-attached electric wire includes a core wire and an insulating coating having a first coating portion and a second coating portion covering the core wire at intervals.
  • a wire in which an intermediate exposed portion to which the core wire is exposed is formed between the first covering portion and the second covering portion, a wire connecting portion connected to the intermediate exposing portion, and the first wire connecting portion from the wire connecting portion
  • An extension portion extending to the covering portion side, a gap forming portion separating at least a part in the direction along the longitudinal direction of the extension portions from the first coating portion to form a gap
  • the extension The terminal includes a terminal including a mating connecting portion formed to extend from the tip end side of the portion where the gap forming portion is formed among the projecting portions, and a thermally contracted state, and the wire connecting portion and the intermediate portion From the connection part with the exposed part to the part where the gap forming part is formed Comprising a heat-shrinkable tube that covers the region including at least a region,
  • the heat-shrinkable tube-attached electric wire according to the second aspect is the heat-shrinkable tube-attached electric wire according to the first aspect, wherein the gap forming portion is formed on the surface of the plate member constituting the extension portion. It includes a groove formed to extend in the width direction.
  • the heat-shrinkable tube-attached electric wire according to the third aspect is the heat-shrinkable tube-attached electric wire according to the second aspect, wherein the grooves are formed at a plurality of locations in the direction along the longitudinal direction of the extension portion. .
  • the heat-shrinkable tube-attached electric wire according to the fourth aspect is the heat-shrinkable tube-attached electric wire according to any one of the first to third aspects, wherein the gap forming portion is a step formed in the extension portion. including.
  • the heat-shrinkable tube-attached electric wire according to the fifth aspect is the heat-shrinkable tube-attached electric wire according to any one of the first to fourth aspects, wherein the gap forming portion is a protrusion formed in the extension portion. including.
  • the heat-shrinkable tube-attached electric wire according to the sixth aspect is the heat-shrinkable tube-attached electric wire according to any one of the first to fifth aspects, wherein the gap is at a position facing the middle portion of the first covering portion.
  • the formation portion is formed.
  • a gap is formed between the extension and the first covering portion by the gap forming portion, so that the adhesive is easily spread through the gap, and in the cross section of the portion in which the gap is formed.
  • a portion not filled with the adhesive is less likely to occur between the heat-shrinkable tube, the terminal and the wire.
  • the groove can form a gap.
  • the third aspect when at least one of the plurality of grooves is filled with the adhesive, it is possible to stop the water, which leads to the improvement of the water resistance.
  • the gap can be formed by the step.
  • the gap can be formed by the protrusion.
  • the edge is less likely to contact the core wire.
  • FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
  • FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
  • It is a perspective view showing the terminal concerning a 1st embodiment.
  • It is an explanatory view showing signs that a heat contraction tube attached electric wire is manufactured.
  • It is an explanatory view showing signs that a heat contraction tube attached electric wire is manufactured.
  • It is a perspective view which shows the terminal concerning a 2nd embodiment.
  • It is a side view showing the electric wire with a heat contraction tube concerning the 1st modification.
  • It is a perspective view showing the terminal concerning the 1st modification.
  • It is a side view showing the electric wire with a heat contraction tube concerning the 2nd modification.
  • It is a perspective view showing the terminal concerning the 2nd modification.
  • FIG. 1 is a side view showing the heat-shrinkable tube-attached electric wire 10 according to the first embodiment.
  • FIG. 2 is a cross-sectional view taken along the line II-II of FIG.
  • FIG. 3 is a cross-sectional view taken along line III-III of FIG.
  • FIG. 4 is a perspective view showing the terminal 20 according to the first embodiment.
  • the heat-shrinkable tube-attached electric wire 10 includes a heat-shrinkable tube 40 covering a region including the electric wire 12, a terminal 20 connected to an intermediate portion of the electric wire 12, and a connection portion between the electric wire 12 and the terminal 20. And an adhesive 50 for sealing the inner region.
  • the electric wire 12 is used, for example, as a wiring material for connecting an electric device mounted on a vehicle.
  • the electric wire 12 includes a core 13 and an insulation coating 16 covering the periphery of the core 13. In the middle portion of the electric wire 12, there is no insulating coating 16, and an intermediate exposed portion 14 is formed where the core wire 13 is exposed.
  • the core 13 is constituted by one or more strands 15.
  • the strands 15 are formed of a conductive material such as copper, copper alloy, aluminum, aluminum alloy or the like.
  • the core wire 13 is described as a twisted wire in which a plurality of strands 15 made of aluminum, aluminum alloy or the like are twisted.
  • the insulating coating 16 is formed by extruding an insulating resin such as polyethylene or polyvinyl chloride around the core wire 13 or applying an insulating resin coating such as an enamel coating around the core wire 13. It is formed.
  • the insulating coating 16 has a first covering portion 17 and a second covering portion 18.
  • the first covering portion 17 and the second covering portion 18 are provided at intervals along the longitudinal direction of the core wire 13 and cover the periphery of the core wire 13 respectively. Therefore, in the electric wire 12, the intermediate exposure portion 14 is formed between the first covering portion 17 and the second covering portion 18.
  • the first covering portion 17, the second covering portion 18 and the middle exposure are exposed by peeling off a portion of the covering portion in the middle portion of the electric wire uniformly coated along the longitudinal direction with respect to the core wire 13.
  • the part 14 is formed.
  • the terminal 20 is connected to the middle portion of the wire 12.
  • the terminal 20 is also called an intermediate terminal or the like.
  • the terminal 20 includes a wire connection portion 22, an extension portion 24, a gap forming portion 26, and a mating connection portion 32.
  • the terminal 20 further includes a coated crimping portion 36.
  • the terminal 20 is formed, for example, by punching and bending one plate material having conductivity such as copper and copper alloy.
  • the terminals 20 may be plated with tin or the like as required.
  • the wire connection portion 22 is connected to the intermediate exposure portion 14.
  • the wire connection portion 22 is formed in a flat plate shape.
  • the wire connection portion 22 and the intermediate exposed portion 14 are connected by welding.
  • middle exposure part 14 is not restricted to welding, For example, you may be connected by crimping.
  • the wire connection portion is formed in a shape including a bottom portion and a pressure bonding piece which is erected at the bottom portion and is crimped to the intermediate exposed portion.
  • the extension portion 24 extends from the wire connection portion 22 to the first covering portion 17 side.
  • the extension part 24 is formed in the same flat plate shape as the wire connection part 22.
  • the extending portion 24 extends to a position facing the middle portion of the first covering portion 17.
  • the extension part 24 may be formed in the shape of a curved plate curved along the outer periphery of the first covering part 17.
  • the gap forming portion 26 separates at least a part of the extension portion 24 in the direction along the longitudinal direction from the first covering portion 17 to form a gap A.
  • the gap A is opened to the external space so that the flowing adhesive can enter the gap A.
  • all the gaps A are not blocked by the wires 12.
  • openings may be formed on both sides of the wire 12 so that the flowing adhesive can enter the gap A.
  • a groove 27 is formed as the gap forming portion 26.
  • the groove 27 is formed on the surface of the plate material constituting the extending portion 24 so as to extend in the width direction of the extending portion 24.
  • the grooves 27 are formed at a plurality of locations (here, two locations) in the direction along the longitudinal direction of the extension 24. However, the groove 27 may be formed at only one place in the direction along the longitudinal direction of the extension 24.
  • the groove 27 is formed such that a uniform cross section is continuous along the extending direction (the width direction of the extending portion 24).
  • the cross-sectional shape of the groove 27 is formed in a rectangular shape.
  • the shape of the groove 27 is not limited to the one described above.
  • the cross-sectional shape of the groove 27 may be formed in a semicircular or other angular shape.
  • the cross-sectional shape of the groove 27 is a shape that becomes wider from the bottom side to the opening side of the groove 27 such as a semicircular shape or an equal-legged shape, in addition to the case where the width is constant along the depth direction. It should be formed.
  • the groove 27 may be formed so that the cross section changes along the extending direction (the width direction of the extending portion 24).
  • the groove 27 is formed along the entire width of the extension 24 but may be formed only in a part along the width of the extension 24.
  • the size of the groove 27 is not particularly limited, and may be determined experimentally or empirically. At this time, for example, the following matters may be taken into consideration and determined. That is, it is considered that the smaller the size of the groove 27 is, the harder the adhesive 50 gets through. For this reason, in terms of facilitating the spread of the adhesive 50, it is preferable that the size of the groove 27 be large. Therefore, it is conceivable that the lower limit of the size of the groove 27 is set, for example, in accordance with the viscosity or the like at the ultimate temperature of the adhesive 50 which is also heated when heating the heat-shrinkable tube 40. More specifically, when the viscosity of the adhesive 50 at the ultimate temperature is high, it is preferable that the size of the groove 27 be larger than the case where the viscosity of the adhesive 50 at the ultimate temperature is low.
  • the upper limit of the size of the groove 27 for example, when using the heat-shrinkable tube 40B with the adhesive 50B (see FIG. 6) in which the adhesive 50B is provided in advance in the heat-shrinkable tube 40, only the adhesive 50B It is considered that the size is sufficient.
  • the groove 27 may be formed by cutting, bending, or pressing a plate member constituting the terminal 20 with a member having a convex portion corresponding to the groove 27.
  • the groove 27 is formed by cutting the plate material that constitutes the terminal 20, the strength reduction of the terminal 20, the increase in the resistance of the terminal 20 due to the reduction in cross-sectional area, and the like may occur. Therefore, the upper limit of the size of the groove 27 may be set to a size such that the decrease in strength of the terminal 20 and the increase in resistance of the terminal 20 fall within the allowable value.
  • the gap forming portion 26 (here, the groove 27) is formed at a position facing the middle portion of the first covering portion 17. As a result, even if an edge occurs in the gap forming portion 26, the edge abuts on the first covering portion 17, whereby the edge hardly abuts on the core wire 13. At this time, since the groove 27 is formed at a position facing the middle portion of the first covering portion 17, the edge portion on the middle exposed portion 14 side of the first covering portion 17 is in contact with the extending portion 24.
  • the mating connection portion 32 is formed so as to extend from the distal end side of a portion of the extension portion 24 in which the gap forming portion 26 is formed.
  • the mating connection portion 32 is formed in a boltable shape.
  • the mating connection portion 32 includes a connection piece 33 extending from the tip end along the extending direction of the extending portion 24 so as to be orthogonal to the extending portion 24.
  • a through hole 34 through which a bolt can be inserted is formed in the connection piece 33.
  • the coated crimping portion 36 is provided on the opposite side of the wire connecting portion 22 to the extending portion 24.
  • the coated crimping portion 36 is crimped to the second coated portion 18.
  • the coated crimping portion 36 includes a bottom portion 37 extending from the wire connection portion 22 to the opposite side to the extending portion 24 and a pair of crimping pieces 38 erected on the bottom portion 37.
  • the bottom 37 is bent in a curved manner.
  • the crimped piece 38 is crimped and deformed into a shape that sandwiches the second covering portion 18 together with the bottom portion 37.
  • the heat-shrinkable tube 40 covers a region including at least a region from the connection portion between the wire connection portion 22 and the intermediate exposure portion 14 to the portion where the gap forming portion 26 is formed.
  • one end of the heat shrinkable tube 40 covers the second covering portion 18.
  • one end of the heat shrinkable tube 40 covers the second covering portion 18 at a position beyond the covering crimping portion 36. For this reason, one end of the heat-shrinkable tube 40 is thermally shrunk to a shape along the outer shape of the second covering portion 18, and the gap between the heat-shrinking tube 40 and the second covering portion 18 is filled with the adhesive 50. It is easier.
  • the other end of the heat-shrinkable tube 40 covers the distal end side of the portion of the extension 24 where the gap forming portion 26 is formed.
  • the other end of the heat-shrinkable tube 40 covers the position in the vicinity of the mating connector 32 here.
  • the heat-shrinkable tube 40 is, for example, a tubular member formed of a synthetic resin such as a polyolefin resin or a nylon resin.
  • the heat-shrinkable tube 40B before shrinking is obtained by cooling the resin member, which has been formed into a thin tubular shape by extrusion molding, into a thick tubular shape in a heated state after being crosslinked, and then cooled.
  • the heat-shrinkable tube 40B obtained in this way has shape memory characteristics that, when heated, shrink to a thin tubular shape before being stretched.
  • the heat-shrinkable tube 40 in the heat-shrinkable tube-attached electric wire 10 is in a heat-shrinked state, and the connecting portion between the terminal 20 and the electric wire 12 to be coated in the process of transitioning from a thick tubular to a thin tubular by heat shrinking. It is deformed to the shape along the outline.
  • the adhesive 50 is provided inside the heat-shrinkable tube 40.
  • the adhesive 50 shuts off the inner area of the heat shrinkable tube 40.
  • a polyamide-based thermoplastic hot melt adhesive 50 or the like is used as the adhesive 50.
  • the adhesive 50 is not limited to the above-described one, and for example, a polyolefin-based thermoplastic hot melt adhesive 50 such as ethylene-vinyl acetate copolymer (EVA) may be used.
  • EVA ethylene-vinyl acetate copolymer
  • the adhesive 50 is maintained in a state in which the gap in the heat-shrinkable tube 40 is filled by the adhesive 50B flowing by heating.
  • the adhesive 50B may be provided in advance, for example, on the inner peripheral surface of the heat-shrinkable tube 40B before contraction, may be provided on the side of the electric wire 12 with the terminal 20, or both of them. Then, the adhesive 50B becomes a flowable state by being heated simultaneously with the heating for shrinking the heat-shrinkable tube 40, and flows so as to fill the gap A in the inner region as the heat-shrinkable tube 40 shrinks. Do.
  • the flowed adhesive 50 B is maintained in a state of filling the gap A in the inner region of the heat-shrinkable tube 40 by cooling and solidifying, and becomes the adhesive 50 for water blocking the inner region of the heat-shrinkable tube 40.
  • FIG.5 and FIG.6 is explanatory drawing which shows a mode that the electric wire 10 with a heat-shrinkage tube is manufactured. Only the heat-shrinkable tube 40B with the adhesive 50B is shown in FIG. 6 in a longitudinal sectional view.
  • the electric wire 12 having the intermediate exposed portion 14 in which the core wire 13 is exposed in the intermediate portion, and the terminal 20 with the gap forming portion 26 formed are prepared.
  • the wire 12 can be formed by stripping the middle portion of the uniformly coated wire.
  • channel 27 as a clearance gap formation part was formed can be formed by cutting a part of board material which comprises a terminal.
  • the terminal 20 is connected to the intermediate exposure portion 14.
  • the intermediate exposed portion 14 and the wire connection portion 22 are welded by, for example, an ultrasonic welding apparatus (not shown).
  • the coated crimping portion 36 is crimped to the second covering portion 18 using a crimping device (not shown). Either the welding of the intermediate exposed portion 14 and the wire connection portion 22 or the crimping of the coated crimping portion 36 may be performed first.
  • the heat-shrinkable tube 40 ⁇ / b> B is put on the connection portion between the terminal 20 and the electric wire 12.
  • the heat-shrinkable tube 40B with the adhesive 50B is used in which the adhesive 50B is previously applied to the inner surface of the heat-shrinkable tube 40B before the contraction.
  • the heat-shrinkable tube 40B can be easily positioned, for example, by abutting one end of the heat-shrinkable tube 40B against the connection piece 33 when the heat-shrinkable tube 40B is put on the connection portion between the terminal 20 and the electric wire 12.
  • the heat-shrinkable tube 40B put on the connection portion between the terminal 20 and the electric wire 12 is heated and thermally shrunk by a heating device such as a heater (not shown).
  • a heating device such as a heater (not shown).
  • the adhesive 50B in the heat-shrinkable tube 40B is also heated to flow.
  • the heat-shrinkable tube 40B thermally shrinks, and the adhesive 50B flows, whereby the gap between the heat-shrinkable tube 40, the electric wire 12, and the terminal 20 is filled with the adhesive 50.
  • any portion along the width direction of the extending portion 24 as shown in FIG. (Typically, it is in contact with the first covering portion 17 at a portion near the central portion).
  • the space between the first covering portion 17 and the extension portion 24 becomes small, and the heat-shrinkable tube-attached electric wire 10 is shown in FIG. As shown in 3, the gap A1 may not be filled with the adhesive 50.
  • the adhesive 50 passes through the groove 27 in the portion adjacent to the groove 27 and the first covering portion 17 and the extension portion It is possible that the space A1 between 24 and 24 is filled.
  • FIG. 7 is a side view showing the heat-shrinkable tube-attached electric wire 110 according to the second embodiment.
  • FIG. 8 is a perspective view showing a terminal 120 according to the second embodiment.
  • the same components as those described above are denoted by the same reference numerals, and the description thereof is omitted.
  • the shape of the gap-forming portion 126 formed in the terminal 120 is the gap-formed portion 26 formed in the terminal 20 in the heat-shrinkable tube attached electric wire 10 according to the first embodiment. It is different from the shape of
  • a step 28 is formed as the gap forming portion 126.
  • the step 28 is formed in the extending portion 124.
  • the connecting portion 28a for forming the step 28 is bent at a right angle, but may be bent at an angle.
  • the upper surface of the first portion 124a on the distal end side of the extension portion 124 across the connecting portion 28a is parallel to the upper surface of the second portion 124b on the proximal side, but is formed to intersect May be
  • the position where the step 28 is formed is not particularly limited as long as the heat-shrinkable tube 40 can be covered on the portion including the gap A formed by the step 28.
  • the step 28 is a portion of the extension portion 124 facing the first covering portion 17 and is formed closer to the wire connection portion 22 than a portion where the mating connection portion 32 extends. Since the step 28 is formed in a portion of the extension portion 124 facing the first covering portion 17, the edge abuts on the first covering portion 17 even if an edge occurs in the gap forming portion 126, Thus, the contact of the edge with the intermediate exposure portion 14 can be suppressed. Further, since the step 28 is formed in the portion of the extension portion 124 facing the first covering portion 17, the edge portion of the first covering portion 17 on the intermediate exposed portion 14 side is the second portion of the extension portion 124. It is in contact with 124b.
  • step difference 28 can be easily formed, for example by bending the board
  • the size of the step 28 is preferably large from the viewpoint of facilitating the penetration of the adhesive 50. Therefore, the lower limit of the size of the step 28 may be set according to, for example, the viscosity at the ultimate temperature of the adhesive 50B which is also heated when the heat-shrinkable tube 40B is heated. More specifically, when the viscosity of the adhesive 50B at the ultimate temperature is high, it is preferable that the size of the step 28 be larger than the case where the viscosity of the adhesive 50B at the ultimate temperature is low.
  • the size of the step 28 is preferably smaller. Therefore, as the upper limit of the size of the step 28, for example, when using the heat-shrinkable tube 40B with the adhesive 50B in which the adhesive 50B is provided in advance in the heat-shrinkable tube 40B, the size is sufficient for only the adhesive 50B. Is preferred.
  • the gap A is formed between the extension part 24 and the first covering part 17 by the gap forming part 26, 126. Therefore, the adhesive 50 spreads through the gap A As a result, in the cross section of the portion where the gap A is formed, a portion where the adhesive 50 is not filled between the heat-shrinkable tube 40, the terminal 20 and the electric wire 12 is less likely to occur. Thereby, when connecting the terminal 20 to the intermediate part of the electric wire 12, the connection part of the terminal 20 and the electric wire 12 can be corrosion-protected favorably.
  • the groove 27 can form the gap A. At this time, if a plurality of grooves 27 are formed, water sealing becomes possible if at least one of the plurality of grooves 27 is filled with the adhesive 50, which leads to improvement in water resistance.
  • the gap A can be formed by the step 28.
  • the gap forming portion 26 is formed in the portion of the extension portion 24 facing the first covering portion 17, even if an edge occurs in the gap forming portion 26, The edge is less likely to contact the core wire 13.
  • FIG. 9 is a side view showing the heat-shrinkable tube-attached wire 210 according to the first modification.
  • FIG. 10 is a perspective view showing a terminal 220 according to a first modification.
  • the groove 27 or the step 28 is formed as the gap forming portion 26, 126, this is not essential.
  • the projection 29 is formed as the gap forming portion 226.
  • the protrusion 29 is formed in the extension portion 24 so as to protrude from the extension portion 24 to the electric wire 12 side.
  • the protrusion 29 is in contact with the electric wire 12.
  • the projection 29 abuts on the first covering portion 17.
  • a gap A is formed between the portion of the extension portion 24 adjacent to the protrusion 29 and the first covering portion 17.
  • the protrusions 29 are formed at a plurality of locations (here two locations) in the direction along the longitudinal direction of the extension 24.
  • the projections 29 may be formed at only one place in the direction along the longitudinal direction of the extension 24.
  • the protrusion 29 which concerns can be simply formed, for example by cutting up the board
  • FIG. 11 is a side view showing a heat-shrinkable tube-attached wire 310 according to a second modification.
  • FIG. 12 is a perspective view showing a terminal 320 according to a second modification.
  • the gap forming portion 26 126, 226, is formed in a shape in which plural types of elements are combined.
  • the groove 27 and the step 28 are formed in combination as the gap forming portion 326. More specifically, the groove 27 is formed in the first portion 124 a on the tip end side which is formed and lowered in the extension portion 124 in the step.
  • the gap A can be formed by the gap forming portion 326 formed in a shape in which a plurality of types of elements are combined.
  • each element is formed small compared with the case where only each element is formed.
  • the coated crimping portion 36 is provided on the terminals 20, 120, 220, and 320, this is not an essential configuration, and the coated crimping portion 36 is provided on the terminals 20, 120, 220, and 320. It may not be done.
  • a coated crimping portion 36 for the first coated portion 17 crimped to the first coated portion 17 is further provided. There is also a possibility.
  • the mating connection portion 32 may be formed in a tab-like so-called male terminal shape, or may be formed in a tubular so-called female terminal shape into which the tab-like male terminal is inserted.
  • connection piece 33 of the other party connection part 32 was demonstrated so that it might be provided so as to be orthogonal to the extension part 24 from the front-end
  • the connection piece 33 of the mating connection portion 32 may extend from the side surface of the extension portion 24 in the same plane as the extension portion 24 or may extend from the side surface of the extension portion 24 It may be provided to be orthogonal to 24.
  • each structure demonstrated by said each embodiment and each modification can be combined suitably, as long as there is no contradiction mutually.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Insulated Conductors (AREA)

Abstract

The objective of the invention is to provide a feature that provides good corrosion resistance to a section connecting a terminal and an electrical cable when a terminal is connected to the middle section of an electrical cable. This heat-shrink tube equipped electrical cable comprises an electrical cable, a terminal connected to the middle section of the electrical cable, a heat-shrink tube covering a region containing the section connecting the electrical cable and the terminal, and an adhesive waterproofing the interior region of the heat-shrink tube. The terminal includes an electrical cable connecting section that connects to an intermediate exposed section of the electrical cable, an extending section extending from the electrical cable connecting section toward a first covered section-side of the electrical cable, a gap-forming section forming a gap by separating the first covered section-side from at least a portion of the extending section along the length direction, and a counterpart-side connecting section formed in such a manner as to extend from a more distal end side than the portion of the extending section where the gap-forming section is formed.

Description

熱収縮チューブ付電線Heat shrinkable tube with wire
　この発明は、端子と電線との接続部分を防食する技術に関する。 The present invention relates to a technique for preventing corrosion of a connection portion between a terminal and a wire.
　特許文献１は、端子と電線との接続部分に接着剤付きの熱収縮チューブを被せて当該接続部分における異金属接触腐食を防ぐ技術を開示している。特許文献１において、端子は、電線の端部に接続されており、熱収縮チューブの両端部のうち一方は、端子の中間部に位置し、他方は電線の中間部に位置している。 Patent Document 1 discloses a technique of covering a connection portion between a terminal and an electric wire with a heat-shrinkable tube with an adhesive to prevent different metal contact corrosion in the connection portion. In Patent Document 1, the terminal is connected to the end of the wire, and one of both ends of the heat-shrinkable tube is located in the middle of the terminal and the other is located in the middle of the wire.
特開２０１７－９１６４２号公報JP 2017-91642 A
　端子は、電線の中間部に接続される場合がある。この場合でも、端子と電線の芯線とが異金属等であれば、端子付電線の配設箇所によっては接続部分を防食する必要がある。 The terminals may be connected to the middle of the wire. Even in this case, if the terminal and the core wire of the wire are made of different metals or the like, it is necessary to prevent corrosion of the connected portion depending on the location of the wire with terminal.
　しかしながら、端子が電線の中間部に接続された端子付電線に特許文献１に記載の熱収縮チューブによる防食構造を適用した場合、熱収縮チューブの両端部のうち少なくとも一方が端子と電線とが重なる部分に位置することになる。このとき、端子と電線とが重なる部分において端子と電線とが当接していると、端子と電線との隙間に接着剤が行き渡りにくくなる恐れがある。 However, when the anticorrosion structure by the heat-shrinkable tube described in Patent Document 1 is applied to the terminal-attached electric wire in which the terminal is connected to the middle portion of the electric wire, at least one of the both ends of the heat-shrinkable tube overlaps the terminal and the wire It will be located in the part. At this time, if the terminal and the electric wire are in contact with each other at a portion where the terminal and the electric wire overlap, the adhesive may be difficult to spread in the gap between the terminal and the electric wire.
　そこで本発明は、電線の中間部に端子を接続する場合に、端子と電線との接続部分を良好に防食できる技術を提供することを目的とする。 Then, when connecting a terminal to the intermediate part of an electric wire, an object of this invention is to provide the technique which can carry out the corrosion prevention of the connection part of a terminal and an electric wire favorably.
　上記課題を解決するため、第１の態様に係る熱収縮チューブ付電線は、芯線と、間隔をあけて前記芯線を覆う第１被覆部及び第２被覆部を有する絶縁被覆とを含み、前記第１被覆部と前記第２被覆部との間に前記芯線が露出する中間露出部が形成されている電線と、前記中間露出部に接続される電線接続部と、前記電線接続部から前記第１被覆部側に延出する延出部と、前記延出部のうち長手方向に沿った方向における少なくとも一部と前記第１被覆部とを離間させて隙間を形成する隙間形成部と、前記延出部のうち前記隙間形成部が形成された部分よりも先端側から延出するように形成された相手側接続部とを含む端子と、熱収縮した状態にあり、前記電線接続部と前記中間露出部との接続部分から前記隙間形成部が形成された部分までの領域を少なくとも含む領域を覆う熱収縮チューブと、前記熱収縮チューブの内部に設けられて前記熱収縮チューブの内部領域を止水する接着剤と、を備える。 In order to solve the above problems, the heat-shrinkable tube-attached electric wire according to the first aspect includes a core wire and an insulating coating having a first coating portion and a second coating portion covering the core wire at intervals. A wire in which an intermediate exposed portion to which the core wire is exposed is formed between the first covering portion and the second covering portion, a wire connecting portion connected to the intermediate exposing portion, and the first wire connecting portion from the wire connecting portion An extension portion extending to the covering portion side, a gap forming portion separating at least a part in the direction along the longitudinal direction of the extension portions from the first coating portion to form a gap, the extension The terminal includes a terminal including a mating connecting portion formed to extend from the tip end side of the portion where the gap forming portion is formed among the projecting portions, and a thermally contracted state, and the wire connecting portion and the intermediate portion From the connection part with the exposed part to the part where the gap forming part is formed Comprising a heat-shrinkable tube that covers the region including at least a region, and a bonding agent for water stopping an interior region of the heat shrinkable tube provided inside of the heat shrinkable tube.
　第２の態様に係る熱収縮チューブ付電線は、第１の態様に係る熱収縮チューブ付電線であって、前記隙間形成部は、前記延出部を構成する板材の表面に前記延出部の幅方向に延びるように形成された溝を含む。 The heat-shrinkable tube-attached electric wire according to the second aspect is the heat-shrinkable tube-attached electric wire according to the first aspect, wherein the gap forming portion is formed on the surface of the plate member constituting the extension portion. It includes a groove formed to extend in the width direction.
　第３の態様に係る熱収縮チューブ付電線は、第２の態様に係る熱収縮チューブ付電線であって、前記溝が前記延出部の長手方向に沿った方向において複数箇所に形成されている。 The heat-shrinkable tube-attached electric wire according to the third aspect is the heat-shrinkable tube-attached electric wire according to the second aspect, wherein the grooves are formed at a plurality of locations in the direction along the longitudinal direction of the extension portion. .
　第４の態様に係る熱収縮チューブ付電線は、第１から第３のいずれか１つの態様に係る熱収縮チューブ付電線であって、前記隙間形成部は、前記延出部に形成された段差を含む。 The heat-shrinkable tube-attached electric wire according to the fourth aspect is the heat-shrinkable tube-attached electric wire according to any one of the first to third aspects, wherein the gap forming portion is a step formed in the extension portion. including.
　第５の態様に係る熱収縮チューブ付電線は、第１から第４のいずれか１つの態様に係る熱収縮チューブ付電線であって、前記隙間形成部は、前記延出部に形成された突起を含む。 The heat-shrinkable tube-attached electric wire according to the fifth aspect is the heat-shrinkable tube-attached electric wire according to any one of the first to fourth aspects, wherein the gap forming portion is a protrusion formed in the extension portion. including.
　第６の態様に係る熱収縮チューブ付電線は、第１から第５のいずれか１つの態様に係る熱収縮チューブ付電線であって、前記第１被覆部の中間部に対向する位置に前記隙間形成部が形成されている。 The heat-shrinkable tube-attached electric wire according to the sixth aspect is the heat-shrinkable tube-attached electric wire according to any one of the first to fifth aspects, wherein the gap is at a position facing the middle portion of the first covering portion. The formation portion is formed.
　各態様によると、隙間形成部によって延出部と第１被覆部との間に隙間が形成されるため、当該隙間を通じて接着剤が行き渡り易くなり、もって当該隙間が形成された部分の横断面において、熱収縮チューブと端子と電線との間に接着剤が充填されていない部分が生じにくくなる。これにより、電線の中間部に端子を接続する場合に、端子と電線との接続部分を良好に防食できる。 According to each aspect, a gap is formed between the extension and the first covering portion by the gap forming portion, so that the adhesive is easily spread through the gap, and in the cross section of the portion in which the gap is formed. A portion not filled with the adhesive is less likely to occur between the heat-shrinkable tube, the terminal and the wire. Thereby, when connecting a terminal to the intermediate part of an electric wire, the connection part of a terminal and an electric wire can be corrosion-protected favorably.
　第２の態様によると、溝によって隙間を形成することができる。 According to the second aspect, the groove can form a gap.
　第３の態様によると、複数の溝のうち少なくとも１つに接着剤が充填されれば止水可能となるため、止水性向上につながる。 According to the third aspect, when at least one of the plurality of grooves is filled with the adhesive, it is possible to stop the water, which leads to the improvement of the water resistance.
　第４の態様によると、段差によって隙間を形成することができる。 According to the fourth aspect, the gap can be formed by the step.
　第５の態様によると、突起によって隙間を形成することができる。 According to the fifth aspect, the gap can be formed by the protrusion.
　第６の態様によると、隙間形成部にエッジが生じていても、当該エッジが芯線と接触しにくくなる。 According to the sixth aspect, even if an edge is generated in the gap forming portion, the edge is less likely to contact the core wire.
第１実施形態に係る熱収縮チューブ付電線を示す側面図である。It is a side view showing the electric wire with a heat contraction tube concerning a 1st embodiment. 図１のＩＩ－ＩＩ線に沿って切断した横断面図である。FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 図１のＩＩＩ－ＩＩＩ線に沿って切断した横断面図である。FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 第１実施形態に係る端子を示す斜視図である。It is a perspective view showing the terminal concerning a 1st embodiment. 熱収縮チューブ付電線を製造する様子を示す説明図である。It is an explanatory view showing signs that a heat contraction tube attached electric wire is manufactured. 熱収縮チューブ付電線を製造する様子を示す説明図である。It is an explanatory view showing signs that a heat contraction tube attached electric wire is manufactured. 第２実施形態に係る熱収縮チューブ付電線を示す側面図である。It is a side view showing the electric wire with a heat contraction tube concerning a 2nd embodiment. 第２実施形態に係る端子を示す斜視図である。It is a perspective view which shows the terminal concerning a 2nd embodiment. 第１変形例に係る熱収縮チューブ付電線を示す側面図である。It is a side view showing the electric wire with a heat contraction tube concerning the 1st modification. 第１変形例に係る端子を示す斜視図である。It is a perspective view showing the terminal concerning the 1st modification. 第２変形例に係る熱収縮チューブ付電線を示す側面図である。It is a side view showing the electric wire with a heat contraction tube concerning the 2nd modification. 第２変形例に係る端子を示す斜視図である。It is a perspective view showing the terminal concerning the 2nd modification.
　｛第１実施形態｝
　以下、第１実施形態に係る熱収縮チューブ付電線について説明する。図１は、第１実施形態に係る熱収縮チューブ付電線１０を示す側面図である。図２は、図１のＩＩ－ＩＩ線に沿って切断した横断面図である。図３は、図１のＩＩＩ－ＩＩＩ線に沿って切断した横断面図である。図４は、第１実施形態に係る端子２０を示す斜視図である。 First Embodiment
Hereinafter, the heat-shrinkable tube-attached electric wire according to the first embodiment will be described. FIG. 1 is a side view showing the heat-shrinkable tube-attached electric wire 10 according to the first embodiment. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. FIG. 3 is a cross-sectional view taken along line III-III of FIG. FIG. 4 is a perspective view showing the terminal 20 according to the first embodiment.
　熱収縮チューブ付電線１０は、電線１２と、電線１２の中間部に接続される端子２０と、電線１２と端子２０との接続部分を含む領域を覆う熱収縮チューブ４０と、熱収縮チューブ４０の内部領域を止水する接着剤５０と、を備える。 The heat-shrinkable tube-attached electric wire 10 includes a heat-shrinkable tube 40 covering a region including the electric wire 12, a terminal 20 connected to an intermediate portion of the electric wire 12, and a connection portion between the electric wire 12 and the terminal 20. And an adhesive 50 for sealing the inner region.
　電線１２は、例えば車両に搭載された電気機器を繋ぐ配線材として用いられる。電線１２は、芯線１３と、芯線１３の周囲を覆う絶縁被覆１６とを含む。電線１２の中間部において絶縁被覆１６がなく、芯線１３が露出する中間露出部１４が形成されている。 The electric wire 12 is used, for example, as a wiring material for connecting an electric device mounted on a vehicle. The electric wire 12 includes a core 13 and an insulation coating 16 covering the periphery of the core 13. In the middle portion of the electric wire 12, there is no insulating coating 16, and an intermediate exposed portion 14 is formed where the core wire 13 is exposed.
　芯線１３は、１本又は複数本の素線１５によって構成されている。素線１５は、銅、銅合金、アルミニウム、アルミニウム合金等の導電材料によって形成されている。ここでは芯線１３は、アルミニウム、アルミニウム合金等によって形成された複数本の素線１５が撚られた撚線であるものとして説明する。 The core 13 is constituted by one or more strands 15. The strands 15 are formed of a conductive material such as copper, copper alloy, aluminum, aluminum alloy or the like. Here, the core wire 13 is described as a twisted wire in which a plurality of strands 15 made of aluminum, aluminum alloy or the like are twisted.
　絶縁被覆１６は、ポリエチレン、ポリ塩化ビニルなどの絶縁性を有する樹脂が芯線１３の周囲に押出成形されたり、エナメル塗料などの絶縁性を有する樹脂塗料が芯線１３の周囲に塗布されたりすることによって形成される。絶縁被覆１６は、第１被覆部１７及び第２被覆部１８を有する。第１被覆部１７及び第２被覆部１８は、芯線１３の長手方向に沿って間隔をあけて設けられており、それぞれ芯線１３の周囲を覆っている。従って電線１２において第１被覆部１７と第２被覆部１８との間に中間露出部１４が形成されている。例えば、芯線１３に対して長手方向に沿って一様に被覆された電線の中間部において一部の被覆部が皮剥ぎされることによって、第１被覆部１７、第２被覆部１８及び中間露出部１４が形成される。 The insulating coating 16 is formed by extruding an insulating resin such as polyethylene or polyvinyl chloride around the core wire 13 or applying an insulating resin coating such as an enamel coating around the core wire 13. It is formed. The insulating coating 16 has a first covering portion 17 and a second covering portion 18. The first covering portion 17 and the second covering portion 18 are provided at intervals along the longitudinal direction of the core wire 13 and cover the periphery of the core wire 13 respectively. Therefore, in the electric wire 12, the intermediate exposure portion 14 is formed between the first covering portion 17 and the second covering portion 18. For example, the first covering portion 17, the second covering portion 18 and the middle exposure are exposed by peeling off a portion of the covering portion in the middle portion of the electric wire uniformly coated along the longitudinal direction with respect to the core wire 13. The part 14 is formed.
　端子２０は、電線１２の中間部に接続される。かかる端子２０は、中間端子などとも呼ばれる。端子２０は、電線接続部２２と、延出部２４と、隙間形成部２６と、相手側接続部３２とを含む。ここでは端子２０は、被覆圧着部３６をさらに含む。端子２０は、例えば銅、銅合金等の導電性を有する一の板材に対して打ち抜き加工、曲げ加工が施されて形成される。なお、端子２０には、必要に応じて錫等によるメッキが施されている場合もあり得る。 The terminal 20 is connected to the middle portion of the wire 12. The terminal 20 is also called an intermediate terminal or the like. The terminal 20 includes a wire connection portion 22, an extension portion 24, a gap forming portion 26, and a mating connection portion 32. Here, the terminal 20 further includes a coated crimping portion 36. The terminal 20 is formed, for example, by punching and bending one plate material having conductivity such as copper and copper alloy. The terminals 20 may be plated with tin or the like as required.
　電線接続部２２は、中間露出部１４に接続される。ここでは電線接続部２２は平板状に形成されている。電線接続部２２と中間露出部１４とは、溶接されることによって接続されている。もっとも電線接続部２２と中間露出部１４との接続態様は溶接に限られるものではなく、例えば、圧着によって接続されるものであってもよい。圧着による接続態様が採用される場合、電線接続部は、底部と底部に立設されて中間露出部に圧着される圧着片とを含む形状に形成される。 The wire connection portion 22 is connected to the intermediate exposure portion 14. Here, the wire connection portion 22 is formed in a flat plate shape. The wire connection portion 22 and the intermediate exposed portion 14 are connected by welding. However, the connection aspect of the wire connection part 22 and the intermediate | middle exposure part 14 is not restricted to welding, For example, you may be connected by crimping. When the connection mode by pressure bonding is adopted, the wire connection portion is formed in a shape including a bottom portion and a pressure bonding piece which is erected at the bottom portion and is crimped to the intermediate exposed portion.
　延出部２４は、電線接続部２２から第１被覆部１７側に延出する。ここでは延出部２４は、電線接続部２２と同様の平板状に形成されている。延出部２４は、第１被覆部１７の中間部と対向する位置まで延出している。延出部２４は第１被覆部１７の外周に沿って湾曲する湾曲板状に形成されている場合もあり得る。 The extension portion 24 extends from the wire connection portion 22 to the first covering portion 17 side. Here, the extension part 24 is formed in the same flat plate shape as the wire connection part 22. The extending portion 24 extends to a position facing the middle portion of the first covering portion 17. The extension part 24 may be formed in the shape of a curved plate curved along the outer periphery of the first covering part 17.
　隙間形成部２６は、延出部２４のうち長手方向に沿った方向における少なくとも一部と第１被覆部１７とを離間させて隙間Ａを形成する。このとき隙間Ａは、流動する接着剤が隙間Ａに浸入可能となるように外部空間に開口する。換言すると隙間Ａのすべてが電線１２によって塞がれることはない。この際、流動する接着剤が隙間Ａに浸入可能となる開口が電線１２の両側に形成されているとよい。ここでは隙間形成部２６として溝２７が形成されている。 The gap forming portion 26 separates at least a part of the extension portion 24 in the direction along the longitudinal direction from the first covering portion 17 to form a gap A. At this time, the gap A is opened to the external space so that the flowing adhesive can enter the gap A. In other words, all the gaps A are not blocked by the wires 12. At this time, openings may be formed on both sides of the wire 12 so that the flowing adhesive can enter the gap A. Here, a groove 27 is formed as the gap forming portion 26.
　溝２７は、延出部２４を構成する板材の表面に延出部２４の幅方向に延びるように形成されている。溝２７は、延出部２４の長手方向に沿った方向において複数箇所（ここでは２箇所）に形成されている。もっとも溝２７は、延出部２４の長手方向に沿った方向において１箇所のみに形成されている場合もあり得る。 The groove 27 is formed on the surface of the plate material constituting the extending portion 24 so as to extend in the width direction of the extending portion 24. The grooves 27 are formed at a plurality of locations (here, two locations) in the direction along the longitudinal direction of the extension 24. However, the groove 27 may be formed at only one place in the direction along the longitudinal direction of the extension 24.
　溝２７は、その延出方向（延出部２４の幅方向）に沿って一様な横断面が連続するように形成されている。溝２７の横断面形状は、長方形状に形成されている。もっとも、溝２７の形状は上記したものに限られない。例えば、溝２７の横断面形状は、半円状又は他の角形状に形成されていてもよい。特に溝２７の横断面形状は、深さ方向に沿って幅が一定である場合のほかに、半円状又は等脚台形状など溝２７の底側から開口側に行くに従って幅広となる形状に形成されているとよい。これにより、接着剤５０が溝２７内に行き渡り易くなる。また溝２７は、その延出方向（延出部２４の幅方向）に沿って横断面が変化するように形成されていてもよい。また溝２７は、延出部２４の幅方向に沿って全体に亘って形成されているが、延出部２４の幅方向に沿った一部のみに形成されていてもよい。 The groove 27 is formed such that a uniform cross section is continuous along the extending direction (the width direction of the extending portion 24). The cross-sectional shape of the groove 27 is formed in a rectangular shape. However, the shape of the groove 27 is not limited to the one described above. For example, the cross-sectional shape of the groove 27 may be formed in a semicircular or other angular shape. In particular, the cross-sectional shape of the groove 27 is a shape that becomes wider from the bottom side to the opening side of the groove 27 such as a semicircular shape or an equal-legged shape, in addition to the case where the width is constant along the depth direction. It should be formed. As a result, the adhesive 50 easily spreads in the groove 27. Further, the groove 27 may be formed so that the cross section changes along the extending direction (the width direction of the extending portion 24). The groove 27 is formed along the entire width of the extension 24 but may be formed only in a part along the width of the extension 24.
　溝２７の大きさは特に限定されるものではなく、実験的、経験的に決定されるとよい。このとき例えば以下のような事項が考慮されて決定されるとよい。すなわち溝２７の大きさは、小さくなるほど接着剤５０が行き渡りにくくなると考えられる。このため、接着剤５０を行き渡り易くするとの観点では、溝２７の大きさは大きい方が好ましい。従って、溝２７の大きさの下限としては、例えば熱収縮チューブ４０を加熱する際に併せて加熱される接着剤５０の到達温度での粘性等に応じて設定されることが考えられる。より詳細には、到達温度における接着剤５０の粘性が高い場合、到達温度における接着剤５０の粘性が低い場合よりも溝２７の大きさが大きいことが好ましい。 The size of the groove 27 is not particularly limited, and may be determined experimentally or empirically. At this time, for example, the following matters may be taken into consideration and determined. That is, it is considered that the smaller the size of the groove 27 is, the harder the adhesive 50 gets through. For this reason, in terms of facilitating the spread of the adhesive 50, it is preferable that the size of the groove 27 be large. Therefore, it is conceivable that the lower limit of the size of the groove 27 is set, for example, in accordance with the viscosity or the like at the ultimate temperature of the adhesive 50 which is also heated when heating the heat-shrinkable tube 40. More specifically, when the viscosity of the adhesive 50 at the ultimate temperature is high, it is preferable that the size of the groove 27 be larger than the case where the viscosity of the adhesive 50 at the ultimate temperature is low.
　これに対して溝２７の大きさは、大きくなるほど接着剤５０が充填されるべき空間が大きくなる。このため、接着剤５０の量を抑制するとの観点では、溝２７の大きさは小さい方が好ましい。溝２７の大きさの上限としては、例えば熱収縮チューブ４０内に予め接着剤５０Ｂが設けられた接着剤５０Ｂ付きの熱収縮チューブ４０Ｂ（図６参照）を用いる場合に、当該接着剤５０Ｂのみで足りるような大きさであることが考えられる。 On the other hand, the larger the size of the groove 27, the larger the space in which the adhesive 50 should be filled. Therefore, from the viewpoint of suppressing the amount of the adhesive 50, it is preferable that the size of the groove 27 be smaller. As the upper limit of the size of the groove 27, for example, when using the heat-shrinkable tube 40B with the adhesive 50B (see FIG. 6) in which the adhesive 50B is provided in advance in the heat-shrinkable tube 40, only the adhesive 50B It is considered that the size is sufficient.
　さらに係る溝２７は、端子２０を構成する板材を切削したり、折り曲げたり、溝２７に対応する凸部を有する部材でプレスしたりするなどして形成することが考えられる。端子２０を構成する板材を切削して溝２７を形成する場合、端子２０の強度低下、断面積減少による端子２０の抵抗増大などが生じ得る。従って溝２７の大きさの上限としては、端子２０の強度低下、端子２０の抵抗増大が許容値に収まるような大きさに設定されるとよい。 Further, the groove 27 may be formed by cutting, bending, or pressing a plate member constituting the terminal 20 with a member having a convex portion corresponding to the groove 27. In the case where the groove 27 is formed by cutting the plate material that constitutes the terminal 20, the strength reduction of the terminal 20, the increase in the resistance of the terminal 20 due to the reduction in cross-sectional area, and the like may occur. Therefore, the upper limit of the size of the groove 27 may be set to a size such that the decrease in strength of the terminal 20 and the increase in resistance of the terminal 20 fall within the allowable value.
　隙間形成部２６（ここでは溝２７）は、第１被覆部１７の中間部に対向する位置に形成されている。これにより、隙間形成部２６にエッジが生じていても、当該エッジが第１被覆部１７と当接し、もって当該エッジが芯線１３と当接し難くなる。このとき溝２７が第１被覆部１７の中間部に対向する位置に形成されているため、第１被覆部１７の中間露出部１４側の縁部は延出部２４と当接している。 The gap forming portion 26 (here, the groove 27) is formed at a position facing the middle portion of the first covering portion 17. As a result, even if an edge occurs in the gap forming portion 26, the edge abuts on the first covering portion 17, whereby the edge hardly abuts on the core wire 13. At this time, since the groove 27 is formed at a position facing the middle portion of the first covering portion 17, the edge portion on the middle exposed portion 14 side of the first covering portion 17 is in contact with the extending portion 24.
　相手側接続部３２は、延出部２４のうち隙間形成部２６が形成された部分よりも先端側から延出するように形成されている。相手側接続部３２は、ボルト締め可能な形状に形成されている。具体的には相手側接続部３２は、延出部２４の延出方向に沿った先端部から延出部２４と直交するように延出する接続片３３を含む。そして接続片３３にボルトを挿通可能な貫通孔３４が形成されている。 The mating connection portion 32 is formed so as to extend from the distal end side of a portion of the extension portion 24 in which the gap forming portion 26 is formed. The mating connection portion 32 is formed in a boltable shape. Specifically, the mating connection portion 32 includes a connection piece 33 extending from the tip end along the extending direction of the extending portion 24 so as to be orthogonal to the extending portion 24. A through hole 34 through which a bolt can be inserted is formed in the connection piece 33.
　被覆圧着部３６は、電線接続部２２に対して延出部２４とは反対側に設けられている。被覆圧着部３６は、第２被覆部１８に圧着されている。被覆圧着部３６は、電線接続部２２から延出部２４とは反対側に延出する底部３７と、底部３７に立設された一対の圧着片３８とを含む。例えば、底部３７は、湾曲状に曲げられている。そして圧着片３８は、底部３７と共に第２被覆部１８を挟み込む形状にかしめ変形される。 The coated crimping portion 36 is provided on the opposite side of the wire connecting portion 22 to the extending portion 24. The coated crimping portion 36 is crimped to the second coated portion 18. The coated crimping portion 36 includes a bottom portion 37 extending from the wire connection portion 22 to the opposite side to the extending portion 24 and a pair of crimping pieces 38 erected on the bottom portion 37. For example, the bottom 37 is bent in a curved manner. Then, the crimped piece 38 is crimped and deformed into a shape that sandwiches the second covering portion 18 together with the bottom portion 37.
　熱収縮チューブ４０は、電線接続部２２と中間露出部１４との接続部分から隙間形成部２６が形成された部分までの領域を少なくとも含む領域を覆う。ここでは、熱収縮チューブ４０の一端部は、第２被覆部１８を覆っている。特にここでは熱収縮チューブ４０の一端部は、被覆圧着部３６を超えた位置で第２被覆部１８を覆っている。このため、熱収縮チューブ４０の一端部は、第２被覆部１８の外形に沿った形状に熱収縮しており、熱収縮チューブ４０と第２被覆部１８との隙間に接着剤５０が充填されやすくなっている。また熱収縮チューブ４０の他端部は、延出部２４のうち隙間形成部２６が形成された部分よりも先端側を覆っている。特にここでは熱収縮チューブ４０の他端部は、相手側接続部３２の近傍の位置を覆っている。熱収縮チューブ４０の他端部において、隙間形成部２６が形成されていることによって熱収縮チューブ４０と第１被覆部１７と端子２０との隙間に接着剤５０が充填されやすくなっている。 The heat-shrinkable tube 40 covers a region including at least a region from the connection portion between the wire connection portion 22 and the intermediate exposure portion 14 to the portion where the gap forming portion 26 is formed. Here, one end of the heat shrinkable tube 40 covers the second covering portion 18. In particular, here, one end of the heat shrinkable tube 40 covers the second covering portion 18 at a position beyond the covering crimping portion 36. For this reason, one end of the heat-shrinkable tube 40 is thermally shrunk to a shape along the outer shape of the second covering portion 18, and the gap between the heat-shrinking tube 40 and the second covering portion 18 is filled with the adhesive 50. It is easier. Further, the other end of the heat-shrinkable tube 40 covers the distal end side of the portion of the extension 24 where the gap forming portion 26 is formed. In particular, the other end of the heat-shrinkable tube 40 covers the position in the vicinity of the mating connector 32 here. By forming the gap forming portion 26 at the other end of the heat shrinkable tube 40, the adhesive 50 is easily filled in the gap between the heat shrinkable tube 40, the first covering portion 17, and the terminal 20.
　熱収縮チューブ４０は、例えば、ポリオレフィン系樹脂又はナイロン系樹脂などの合成樹脂によって形成された管状の部材である。収縮前の熱収縮チューブ４０Ｂは、押出成形によって細い管状に成形された樹脂部材が、架橋処理後、加熱された状態で太い管状へ引き伸ばされた後に冷却されることによって得られる。このようにして得られた熱収縮チューブ４０Ｂは、加熱された場合、引き伸ばされる前の細い管状まで収縮する形状記憶特性を有する。熱収縮チューブ付電線１０における熱収縮チューブ４０は、熱収縮した状態にあり、熱収縮することによって太い管状から細い管状へと移行する過程で被覆対象である端子２０と電線１２との接続部分の外形に沿った形状に変形している。 The heat-shrinkable tube 40 is, for example, a tubular member formed of a synthetic resin such as a polyolefin resin or a nylon resin. The heat-shrinkable tube 40B before shrinking is obtained by cooling the resin member, which has been formed into a thin tubular shape by extrusion molding, into a thick tubular shape in a heated state after being crosslinked, and then cooled. The heat-shrinkable tube 40B obtained in this way has shape memory characteristics that, when heated, shrink to a thin tubular shape before being stretched. The heat-shrinkable tube 40 in the heat-shrinkable tube-attached electric wire 10 is in a heat-shrinked state, and the connecting portion between the terminal 20 and the electric wire 12 to be coated in the process of transitioning from a thick tubular to a thin tubular by heat shrinking. It is deformed to the shape along the outline.
　接着剤５０は、熱収縮チューブ４０の内部に設けられている。接着剤５０は、熱収縮チューブ４０の内部領域を止水する。接着剤５０としては、例えば、ポリアミド系の熱可塑性のホットメルト接着剤５０などが用いられる。もっとも接着剤５０としては、上記したものに限られず、例えばエチレン－酢酸ビニル共重合体（ＥＶＡ）などのポリオレフィン系の熱可塑性のホットメルト接着剤５０などが用いられてもよい。接着剤５０は、接着剤５０Ｂが加熱により流動することによって熱収縮チューブ４０内の隙間を埋めた状態に維持される。 The adhesive 50 is provided inside the heat-shrinkable tube 40. The adhesive 50 shuts off the inner area of the heat shrinkable tube 40. As the adhesive 50, for example, a polyamide-based thermoplastic hot melt adhesive 50 or the like is used. However, the adhesive 50 is not limited to the above-described one, and for example, a polyolefin-based thermoplastic hot melt adhesive 50 such as ethylene-vinyl acetate copolymer (EVA) may be used. The adhesive 50 is maintained in a state in which the gap in the heat-shrinkable tube 40 is filled by the adhesive 50B flowing by heating.
　接着剤５０Ｂは、例えば収縮前の熱収縮チューブ４０Ｂの内周面に予め設けられてもよいし、端子２０付き電線１２側に設けられていてもよいし、その両方であってもよい。そして接着剤５０Ｂは、熱収縮チューブ４０を収縮させるための加熱時に併せて加熱されることによって流動可能な状態となり、熱収縮チューブ４０の熱収縮に伴って内部領域の隙間Ａを埋めるように流動する。流動した接着剤５０Ｂは、冷えて固まることによって熱収縮チューブ４０の内部領域の隙間Ａを埋めた状態に維持され、熱収縮チューブ４０の内部領域を止水する接着剤５０となる。 The adhesive 50B may be provided in advance, for example, on the inner peripheral surface of the heat-shrinkable tube 40B before contraction, may be provided on the side of the electric wire 12 with the terminal 20, or both of them. Then, the adhesive 50B becomes a flowable state by being heated simultaneously with the heating for shrinking the heat-shrinkable tube 40, and flows so as to fill the gap A in the inner region as the heat-shrinkable tube 40 shrinks. Do. The flowed adhesive 50 B is maintained in a state of filling the gap A in the inner region of the heat-shrinkable tube 40 by cooling and solidifying, and becomes the adhesive 50 for water blocking the inner region of the heat-shrinkable tube 40.
　＜製造方法＞
　図５及び図６は、熱収縮チューブ付電線１０を製造する様子を示す説明図である。図６において接着剤５０Ｂ付きの熱収縮チューブ４０Ｂのみ縦断面図で示されている。 <Manufacturing method>
FIG.5 and FIG.6 is explanatory drawing which shows a mode that the electric wire 10 with a heat-shrinkage tube is manufactured. Only the heat-shrinkable tube 40B with the adhesive 50B is shown in FIG. 6 in a longitudinal sectional view.
　熱収縮チューブ付電線１０を製造するに当たって、まず中間部において芯線１３が露出した中間露出部１４を有する電線１２と、隙間形成部２６が形成された端子２０とを用意する。例えば、一様に被覆された電線の中間部を皮剥ぎすることによって電線１２を形成することができる。また、端子を構成する板材の一部を切削することによって隙間形成部としての溝２７が形成された端子２０を形成することができる。 In manufacturing the heat-shrinkable tube-attached electric wire 10, first, the electric wire 12 having the intermediate exposed portion 14 in which the core wire 13 is exposed in the intermediate portion, and the terminal 20 with the gap forming portion 26 formed are prepared. For example, the wire 12 can be formed by stripping the middle portion of the uniformly coated wire. Moreover, the terminal 20 in which the groove | channel 27 as a clearance gap formation part was formed can be formed by cutting a part of board material which comprises a terminal.
　次に当該中間露出部１４に端子２０を接続する。ここでは、中間露出部１４と電線接続部２２とを例えば、図示省略の超音波溶接装置によって溶接する。また端子２０が被覆圧着部３６を有する場合、図示省略の圧着装置を用いて被覆圧着部３６を第２被覆部１８に圧着する。中間露出部１４と電線接続部２２との溶接と、被覆圧着部３６の圧着とはどちらが先に行われてもよい。 Next, the terminal 20 is connected to the intermediate exposure portion 14. Here, the intermediate exposed portion 14 and the wire connection portion 22 are welded by, for example, an ultrasonic welding apparatus (not shown). When the terminal 20 has the coated crimping portion 36, the coated crimping portion 36 is crimped to the second covering portion 18 using a crimping device (not shown). Either the welding of the intermediate exposed portion 14 and the wire connection portion 22 or the crimping of the coated crimping portion 36 may be performed first.
　次に熱収縮チューブ４０Ｂを、端子２０と電線１２との接続部分に被せる。ここでは収縮前の熱収縮チューブ４０Ｂの内面に接着剤５０Ｂが予め付与された接着剤５０Ｂ付きの熱収縮チューブ４０Ｂが用いられている。熱収縮チューブ４０Ｂを端子２０と電線１２との接続部分に被せるに当たって、例えば熱収縮チューブ４０Ｂの一端部を接続片３３に突き当てることによって、容易に熱収縮チューブ４０Ｂを位置決めできる。 Next, the heat-shrinkable tube 40 </ b> B is put on the connection portion between the terminal 20 and the electric wire 12. Here, the heat-shrinkable tube 40B with the adhesive 50B is used in which the adhesive 50B is previously applied to the inner surface of the heat-shrinkable tube 40B before the contraction. The heat-shrinkable tube 40B can be easily positioned, for example, by abutting one end of the heat-shrinkable tube 40B against the connection piece 33 when the heat-shrinkable tube 40B is put on the connection portion between the terminal 20 and the electric wire 12.
　次に端子２０と電線１２との接続部分に被せられた熱収縮チューブ４０Ｂを、図示省略のヒータ等の加熱装置によって加熱し熱収縮させる。このとき熱収縮チューブ４０Ｂ内の接着剤５０Ｂも加熱し、流動状態にさせる。熱収縮チューブ４０Ｂが熱収縮すると共に、接着剤５０Ｂが流動することによって、熱収縮チューブ４０と電線１２と端子２０との間の隙間が接着剤５０によって埋められる。 Next, the heat-shrinkable tube 40B put on the connection portion between the terminal 20 and the electric wire 12 is heated and thermally shrunk by a heating device such as a heater (not shown). At this time, the adhesive 50B in the heat-shrinkable tube 40B is also heated to flow. The heat-shrinkable tube 40B thermally shrinks, and the adhesive 50B flows, whereby the gap between the heat-shrinkable tube 40, the electric wire 12, and the terminal 20 is filled with the adhesive 50.
　ここで第１被覆部１７と対向する延出部２４のうち溝２７が形成されている部分においては、図６に示されるように延出部２４の幅方向に沿ったいずれの部分においても第１被覆部１７と当接していない。そして延出部２４の幅方向に沿った両端側では、溝２７が第１被覆部１７によって塞がれておらず開いている。このため、熱収縮チューブ付電線１０においては、図２に示されるように延出部２４と第１被覆部１７との間の隙（溝２７）に接着剤５０が充填されやすい。 Here, in the portion of the extension portion 24 facing the first covering portion 17 where the groove 27 is formed, as shown in FIG. 6, in any portion along the width direction of the extension portion 24, 1 Not in contact with the covering portion 17 The groove 27 is not closed by the first covering portion 17 and is open at both end sides along the width direction of the extending portion 24. For this reason, in the heat-shrinkable tube-attached electric wire 10, as shown in FIG. 2, the adhesive 50 is likely to be filled in the space (groove 27) between the extension 24 and the first cover 17.
　これに対して第１被覆部１７と対向する延出部２４のうち溝２７が形成されていない部分においては、図６に示されるように延出部２４の幅方向に沿ったいずれかの部分（典型的には中央部近傍の部分）で第１被覆部１７と当接している。この結果、第１被覆部１７と延出部２４との当接部分近傍では、第１被覆部１７と延出部２４との間の隙が小さくなり、熱収縮チューブ付電線１０においては、図３に示されるように当該隙Ａ１に接着剤５０が充填されない場合が生じ得る。もっとも第１被覆部１７と対向する延出部２４のうち溝２７が形成されていない部分においても、溝２７と隣接する部分においては接着剤５０が溝２７を通じて第１被覆部１７と延出部２４との間の隙Ａ１に充填されていることもあり得る。 On the other hand, in the portion where the groove 27 is not formed in the extending portion 24 opposed to the first covering portion 17, any portion along the width direction of the extending portion 24 as shown in FIG. (Typically, it is in contact with the first covering portion 17 at a portion near the central portion). As a result, in the vicinity of the contact portion between the first covering portion 17 and the extension portion 24, the space between the first covering portion 17 and the extension portion 24 becomes small, and the heat-shrinkable tube-attached electric wire 10 is shown in FIG. As shown in 3, the gap A1 may not be filled with the adhesive 50. However, even in the portion where the groove 27 is not formed in the extension portion 24 opposed to the first covering portion 17, the adhesive 50 passes through the groove 27 in the portion adjacent to the groove 27 and the first covering portion 17 and the extension portion It is possible that the space A1 between 24 and 24 is filled.
　｛第２実施形態｝
　第２実施形態に係る熱収縮チューブ付電線について説明する。図７は、第２実施形態に係る熱収縮チューブ付電線１１０を示す側面図である。図８は、第２実施形態に係る端子１２０を示す斜視図である。なお、本実施の形態の説明において、これまで説明したものと同様構成要素については同一符号を付してその説明を省略する。 Second Embodiment
A heat-shrinkable tube-attached electric wire according to a second embodiment will be described. FIG. 7 is a side view showing the heat-shrinkable tube-attached electric wire 110 according to the second embodiment. FIG. 8 is a perspective view showing a terminal 120 according to the second embodiment. In the description of the present embodiment, the same components as those described above are denoted by the same reference numerals, and the description thereof is omitted.
　第２実施形態に係る熱収縮チューブ付電線１１０において端子１２０に形成される隙間形成部１２６の形状が、第１実施形態に係る熱収縮チューブ付電線１０における端子２０に形成される隙間形成部２６の形状とは異なる。 In the heat-shrinkable tube-attached electric wire 110 according to the second embodiment, the shape of the gap-forming portion 126 formed in the terminal 120 is the gap-formed portion 26 formed in the terminal 20 in the heat-shrinkable tube attached electric wire 10 according to the first embodiment. It is different from the shape of
　隙間形成部１２６として、段差２８が形成されている。段差２８は、延出部１２４に形成されている。なお図８に示す例では、段差２８を形成するための繋ぎ部分２８ａが、直角に曲げられて形成されているが、斜めに曲げられて形成されていてもよい。また、延出部１２４のうち繋ぎ部分２８ａを挟んだ先端側の第１部分１２４ａの上面が、基端側の第２部分１２４ｂの上面と平行とされているが、交差するように形成されていてもよい。 A step 28 is formed as the gap forming portion 126. The step 28 is formed in the extending portion 124. In the example shown in FIG. 8, the connecting portion 28a for forming the step 28 is bent at a right angle, but may be bent at an angle. Further, the upper surface of the first portion 124a on the distal end side of the extension portion 124 across the connecting portion 28a is parallel to the upper surface of the second portion 124b on the proximal side, but is formed to intersect May be
　段差２８が形成される位置は、段差２８によって形成される隙間Ａを含む部分に熱収縮チューブ４０を被せることが可能であれば特に限定されるものではない。ここでは段差２８は、延出部１２４のうち第１被覆部１７に対向する部分であって相手側接続部３２が延出する部分よりも電線接続部２２側に形成されている。段差２８が、延出部１２４のうち第１被覆部１７に対向する部分に形成されているため、隙間形成部１２６にエッジが生じていても、当該エッジが第１被覆部１７と当接し、もって当該エッジが中間露出部１４と接触することを抑制できる。また段差２８が、延出部１２４のうち第１被覆部１７に対向する部分に形成されているため、第１被覆部１７の中間露出部１４側の縁部は延出部１２４の第２部分１２４ｂと当接している。 The position where the step 28 is formed is not particularly limited as long as the heat-shrinkable tube 40 can be covered on the portion including the gap A formed by the step 28. Here, the step 28 is a portion of the extension portion 124 facing the first covering portion 17 and is formed closer to the wire connection portion 22 than a portion where the mating connection portion 32 extends. Since the step 28 is formed in a portion of the extension portion 124 facing the first covering portion 17, the edge abuts on the first covering portion 17 even if an edge occurs in the gap forming portion 126, Thus, the contact of the edge with the intermediate exposure portion 14 can be suppressed. Further, since the step 28 is formed in the portion of the extension portion 124 facing the first covering portion 17, the edge portion of the first covering portion 17 on the intermediate exposed portion 14 side is the second portion of the extension portion 124. It is in contact with 124b.
　段差２８は、例えば延出部１２４を構成する板材を曲げるなどして簡易に形成することができる。この場合例えば、段差２８の高さ寸法は、板材の厚み寸法以上とすることが考えられる。 The level | step difference 28 can be easily formed, for example by bending the board | plate material which comprises the extension part 124. In this case, for example, it is conceivable that the height dimension of the step 28 be equal to or greater than the thickness dimension of the plate material.
　段差２８の大きさは、接着剤５０を行き渡り易くするとの観点では大きい方が好ましい。従って、段差２８の大きさの下限としては、例えば熱収縮チューブ４０Ｂを加熱する際に併せて加熱される接着剤５０Ｂの到達温度での粘性等に応じて設定されるとよい。より詳細には、到達温度における接着剤５０Ｂの粘性が高い場合、到達温度における接着剤５０Ｂの粘性が低い場合よりも段差２８の大きさが大きいことが好ましい。 The size of the step 28 is preferably large from the viewpoint of facilitating the penetration of the adhesive 50. Therefore, the lower limit of the size of the step 28 may be set according to, for example, the viscosity at the ultimate temperature of the adhesive 50B which is also heated when the heat-shrinkable tube 40B is heated. More specifically, when the viscosity of the adhesive 50B at the ultimate temperature is high, it is preferable that the size of the step 28 be larger than the case where the viscosity of the adhesive 50B at the ultimate temperature is low.
　これに対して、接着剤５０の量を抑制するとの観点では、段差２８の大きさは小さい方が好ましい。従って段差２８の大きさの上限としては、例えば熱収縮チューブ４０Ｂ内に予め接着剤５０Ｂが設けられた接着剤５０Ｂ付きの熱収縮チューブ４０Ｂを用いる場合に、当該接着剤５０Ｂのみで足りるような大きさであることが好ましい。 On the other hand, in terms of suppressing the amount of the adhesive 50, the size of the step 28 is preferably smaller. Therefore, as the upper limit of the size of the step 28, for example, when using the heat-shrinkable tube 40B with the adhesive 50B in which the adhesive 50B is provided in advance in the heat-shrinkable tube 40B, the size is sufficient for only the adhesive 50B. Is preferred.
　＜効果等＞
　上記熱収縮チューブ付電線１０，１１０によると、隙間形成部２６，１２６によって延出部２４と第１被覆部１７との間に隙間Ａが形成されるため、当該隙間Ａを通じて接着剤５０が行き渡り易くなり、もって当該隙間Ａが形成された部分の横断面において、熱収縮チューブ４０と端子２０と電線１２との間に接着剤５０が充填されていない部分が生じにくくなる。これにより、電線１２の中間部に端子２０を接続する場合に、端子２０と電線１２との接続部分を良好に防食できる。 <Effects>
According to the heat-shrinkable tube-attached electric wire 10, 110, the gap A is formed between the extension part 24 and the first covering part 17 by the gap forming part 26, 126. Therefore, the adhesive 50 spreads through the gap A As a result, in the cross section of the portion where the gap A is formed, a portion where the adhesive 50 is not filled between the heat-shrinkable tube 40, the terminal 20 and the electric wire 12 is less likely to occur. Thereby, when connecting the terminal 20 to the intermediate part of the electric wire 12, the connection part of the terminal 20 and the electric wire 12 can be corrosion-protected favorably.
　また熱収縮チューブ付電線１０によると、溝２７によって隙間Ａを形成することができる。このとき、溝２７が複数形成されていると、複数の溝２７のうち少なくとも１つに接着剤５０が充填されれば止水可能となるため、止水性向上につながる。 Further, according to the heat-shrinkable tube-attached electric wire 10, the groove 27 can form the gap A. At this time, if a plurality of grooves 27 are formed, water sealing becomes possible if at least one of the plurality of grooves 27 is filled with the adhesive 50, which leads to improvement in water resistance.
　また熱収縮チューブ付電線１１０によると、段差２８によって隙間Ａを形成することができる。 Further, according to the heat-shrinkable tube-attached electric wire 110, the gap A can be formed by the step 28.
　また熱収縮チューブ付電線１０によると、隙間形成部２６が延出部２４のうち第１被覆部１７と対向する部分に形成されているため、隙間形成部２６にエッジが生じていても、当該エッジが芯線１３と接触しにくくなる。熱収縮チューブ付電線１１０においても同様である。 Further, according to the heat-shrinkable tube-attached electric wire 10, since the gap forming portion 26 is formed in the portion of the extension portion 24 facing the first covering portion 17, even if an edge occurs in the gap forming portion 26, The edge is less likely to contact the core wire 13. The same applies to the heat-shrinkable tube-attached wire 110.
　｛変形例｝
　図９は、第１変形例に係る熱収縮チューブ付電線２１０を示す側面図である。図１０は、第１変形例に係る端子２２０を示す斜視図である。 {Modification}
FIG. 9 is a side view showing the heat-shrinkable tube-attached wire 210 according to the first modification. FIG. 10 is a perspective view showing a terminal 220 according to a first modification.
　これまで隙間形成部２６，１２６として溝２７又は段差２８が形成されるものとして説明してきたが、このことは必須ではない。例えば図９に示すように、隙間形成部２２６として突起２９が形成されることも考えられる。 Although it has been described that the groove 27 or the step 28 is formed as the gap forming portion 26, 126, this is not essential. For example, as shown in FIG. 9, it is also conceivable that the projection 29 is formed as the gap forming portion 226.
　突起２９は、延出部２４から電線１２側に突出するように延出部２４に形成されている。突起２９は、電線１２と当接している。特にここでは突起２９は第１被覆部１７と当接している。これにより、延出部２４のうち突起２９に隣接する部分と第１被覆部１７との間に隙間Ａが形成される。突起２９は、延出部２４の長手方向に沿った方向において複数箇所（ここでは２箇所）に形成されている。もっとも突起２９は、延出部２４の長手方向に沿った方向において１箇所のみに形成されている場合もあり得る。係る突起２９は、例えば延出部２４を構成する板材を切り上げるなどして簡易に形成することができる。このような熱収縮チューブ付電線２１０によると、突起２９によって隙間Ａを形成することができる。 The protrusion 29 is formed in the extension portion 24 so as to protrude from the extension portion 24 to the electric wire 12 side. The protrusion 29 is in contact with the electric wire 12. In particular, here, the projection 29 abuts on the first covering portion 17. As a result, a gap A is formed between the portion of the extension portion 24 adjacent to the protrusion 29 and the first covering portion 17. The protrusions 29 are formed at a plurality of locations (here two locations) in the direction along the longitudinal direction of the extension 24. However, the projections 29 may be formed at only one place in the direction along the longitudinal direction of the extension 24. The protrusion 29 which concerns can be simply formed, for example by cutting up the board | plate material which comprises the extension part 24. As shown in FIG. According to such a heat-shrinkable tube-attached electric wire 210, the gap A can be formed by the projection 29.
　図１１は、第２変形例に係る熱収縮チューブ付電線３１０を示す側面図である。図１２は、第２変形例に係る端子３２０を示す斜視図である。 FIG. 11 is a side view showing a heat-shrinkable tube-attached wire 310 according to a second modification. FIG. 12 is a perspective view showing a terminal 320 according to a second modification.
　これまで隙間形成部２６，１２６，２２６として、溝２７、段差２８、突起２９等のいずれか１種類の要素のみが形成されているものとして説明してきたが、このことは必須の構成ではない。隙間形成部として複数種類の要素が組み合わされた形状に形成されていることも考えられる。図１１及び図１２に示す例では、隙間形成部３２６として溝２７と段差２８とが組み合わされた形状に形成されている。より詳細には、ここでは延出部１２４のうち段差２８が形成されて低くなった先端側の第１部分１２４ａに溝２７が形成されている。もっとも隙間形成部３２６としては、溝２７と突起２９とが組み合わされて形成されていてもよいし、段差２８と突起２９とが組み合わされて形成されていてもよいし、溝２７と段差２８と突起２９とが組み合わされて形成されていてもよい。このような熱収縮チューブ付電線３１０によると、複数種類の要素が組み合わされた形状に形成された隙間形成部３２６によって隙間Ａを形成することができる。 So far, it has been described that only one kind of element such as the groove 27, the step 28, the protrusion 29, etc. is formed as the gap forming portion 26, 126, 226, but this is not an essential configuration. It is also conceivable that the gap forming portion is formed in a shape in which plural types of elements are combined. In the example shown in FIG. 11 and FIG. 12, the groove 27 and the step 28 are formed in combination as the gap forming portion 326. More specifically, the groove 27 is formed in the first portion 124 a on the tip end side which is formed and lowered in the extension portion 124 in the step. However, as the gap forming portion 326, the groove 27 and the protrusion 29 may be combined and formed, or the step 28 and the protrusion 29 may be combined and formed, or the groove 27 and the step 28 The protrusions 29 may be formed in combination. According to such a heat-shrinkable tube-attached electric wire 310, the gap A can be formed by the gap forming portion 326 formed in a shape in which a plurality of types of elements are combined.
　なお、隙間形成部３２６として複数種類の要素が組み合わされる場合、各要素のみが形成される場合と比べて、各要素を小さく形成されることも考えられる。 In addition, when several types of elements are combined as the clearance gap formation part 326, it is also considered that each element is formed small compared with the case where only each element is formed.
　またこれまで端子２０，１２０，２２０，３２０に被覆圧着部３６が設けられるものとして説明してきたが、このことは必須の構成ではなく、端子２０，１２０，２２０，３２０に被覆圧着部３６が設けられていない場合もあり得る。また第２被覆部１８に圧着される第２被覆部１８用の上記被覆圧着部３６とは別に、第１被覆部１７に圧着される第１被覆部１７用の被覆圧着部３６がさらに設けられている場合もあり得る。 Also, although the description has been made above assuming that the coated crimping portion 36 is provided on the terminals 20, 120, 220, and 320, this is not an essential configuration, and the coated crimping portion 36 is provided on the terminals 20, 120, 220, and 320. It may not be done. In addition to the coated crimping portion 36 for the second coated portion 18 crimped to the second coated portion 18, a coated crimping portion 36 for the first coated portion 17 crimped to the first coated portion 17 is further provided. There is also a possibility.
　またこれまで相手側接続部３２がボルト締めされる形状に形成されているものとして説明してきたが、このことは必須の構成ではない。例えば、相手側接続部３２は、タブ状のいわゆるオス端子状に形成されていてもよいし、タブ状のオス端子が挿通される筒状のいわゆるメス端子状に形成されていてもよい。 Moreover, although it demonstrated as what was formed in the shape by which the other party connection part 32 is bolted in the past, this is not an essential structure. For example, the mating connection portion 32 may be formed in a tab-like so-called male terminal shape, or may be formed in a tubular so-called female terminal shape into which the tab-like male terminal is inserted.
　またこれまで相手側接続部３２の接続片３３が延出部２４の先端から延出部２４と直交するように設けられているものとして説明してきたが、このことは必須の構成ではない。例えば、相手側接続部３２の接続片３３は、延出部２４の側面から延出部２４と同一平面内で延出するものであってもよいし、延出部２４の側面から延出部２４と直交するように設けられていてもよい。 Moreover, although the connection piece 33 of the other party connection part 32 was demonstrated so that it might be provided so as to be orthogonal to the extension part 24 from the front-end | tip of the extension part 24 until now, this is not an essential structure. For example, the connection piece 33 of the mating connection portion 32 may extend from the side surface of the extension portion 24 in the same plane as the extension portion 24 or may extend from the side surface of the extension portion 24 It may be provided to be orthogonal to 24.
　なお、上記各実施形態及び各変形例で説明した各構成は、相互に矛盾しない限り適宜組み合わせることができる。 In addition, each structure demonstrated by said each embodiment and each modification can be combined suitably, as long as there is no contradiction mutually.
　以上のようにこの発明は詳細に説明されたが、上記した説明は、すべての局面において、例示であって、この発明がそれに限定されるものではない。例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。 As mentioned above, although this invention was explained in detail, the above-mentioned explanation is illustration in all the aspects, and this invention is not limited to it. It is understood that countless variations not illustrated are conceivable without departing from the scope of the present invention.
　１０，１１０，２１０，３１０　熱収縮チューブ付電線
　１２　電線
　１３　芯線
　１４　中間露出部
　１６　絶縁被覆
　１７　第１被覆部
　１８　第２被覆部
　２０，１２０，２２０，３２０　端子
　２２　電線接続部
　２４，１２４　延出部
　２６，１２６，２２６，３２６　隙間形成部
　２７　溝
　２８　段差
　２９　突起
　３２　相手側接続部
　３６　被覆圧着部
　４０　熱収縮チューブ
　５０　接着剤
　Ａ　隙間 10, 110, 210, 310 Wire with heat shrinkable tube 12 Wire 13 Core wire 14 Intermediate exposed portion 16 Insulating coating 17 First covering portion 18 Second covering portion 20, 120, 220, 320 Terminal 22 Wire connecting portion 24, 124 Extension Part 26, 126, 226, 326 Gap formation part 27 Groove 28 Step difference 29 Protrusion 32 Counterpart connection part 36 Cover crimping part 40 Heat-shrinkable tube 50 Adhesive A Gap

Claims (6)

  1. 　芯線と、間隔をあけて前記芯線を覆う第１被覆部及び第２被覆部を有する絶縁被覆とを含み、前記第１被覆部と前記第２被覆部との間に前記芯線が露出する中間露出部が形成されている電線と、
    　前記中間露出部に接続される電線接続部と、前記電線接続部から前記第１被覆部側に延出する延出部と、前記延出部のうち長手方向に沿った方向における少なくとも一部と前記第１被覆部とを離間させて隙間を形成する隙間形成部と、前記延出部のうち前記隙間形成部が形成された部分よりも先端側から延出するように形成された相手側接続部とを含む端子と、
    　熱収縮した状態にあり、前記電線接続部と前記中間露出部との接続部分から前記隙間形成部が形成された部分までの領域を少なくとも含む領域を覆う熱収縮チューブと、
    　前記熱収縮チューブの内部に設けられて前記熱収縮チューブの内部領域を止水する接着剤と、
    　を備える、熱収縮チューブ付電線。     An intermediate exposure including a core wire and an insulating coating having a first coating portion and a second coating portion covering the core wire at intervals, the core wire being exposed between the first coating portion and the second coating portion The electric wire in which the part is formed,
    A wire connection portion connected to the intermediate exposed portion, an extension portion extending from the wire connection portion to the first covering portion side, and at least a portion in a direction along the longitudinal direction of the extension portions A gap forming portion that separates from the first covering portion to form a gap, and a mating connection formed so as to extend from the distal end side of a portion of the extension portion in which the gap forming portion is formed. A terminal including a part;
    A heat-shrinkable tube covering a region including at least a region from a connection portion between the wire connection portion and the intermediate exposure portion to a portion where the gap forming portion is formed;
    An adhesive provided inside the heat-shrinkable tube to stop water in the inner region of the heat-shrinkable tube;
    A wire with a heat-shrinkable tube, comprising:
  2. 　請求項１に記載の熱収縮チューブ付電線であって、
    　前記隙間形成部は、前記延出部を構成する板材の表面に前記延出部の幅方向に延びるように形成された溝を含む、熱収縮チューブ付電線。     The heat-shrinkable tube-attached electric wire according to claim 1, wherein
    The heat-shrinkable tube-attached electric wire, wherein the gap forming portion includes a groove formed to extend in the width direction of the extending portion on a surface of a plate material constituting the extending portion.
  3. 　請求項２に記載の熱収縮チューブ付電線であって、
    　前記溝が前記延出部の長手方向に沿った方向において複数箇所に形成されている、熱収縮チューブ付電線。     The heat-shrinkable tube-equipped electric wire according to claim 2,
    The heat-shrinkable tube-attached electric wire, wherein the grooves are formed at a plurality of locations in a direction along the longitudinal direction of the extension.
  4. 　請求項１から請求項３のいずれか１項に記載の熱収縮チューブ付電線であって、
    　前記隙間形成部は、前記延出部に形成された段差を含む、熱収縮チューブ付電線。     The heat-shrinkable tube-attached electric wire according to any one of claims 1 to 3,
    The heat-shrinkable tube-attached electric wire, wherein the gap forming portion includes a step formed in the extending portion.
  5. 　請求項１から請求項４のいずれか１項に記載の熱収縮チューブ付電線であって、
    　前記隙間形成部は、前記延出部に形成された突起を含む、熱収縮チューブ付電線。     The heat-shrinkable tube-attached electric wire according to any one of claims 1 to 4,
    The heat-shrinkable tube-attached electric wire, wherein the gap forming portion includes a protrusion formed on the extending portion.
  6. 　請求項１から請求項５のいずれか１項に記載の熱収縮チューブ付電線であって、
    　前記第１被覆部の中間部に対向する位置に前記隙間形成部が形成されている、熱収縮チューブ付電線。     The heat-shrinkable tube-attached electric wire according to any one of claims 1 to 5,
    The heat-shrinkable tube-attached electric wire, wherein the gap forming portion is formed at a position facing the middle portion of the first covering portion.
PCT/JP2018/040985 2018-01-26 2018-11-05 Heat-shrink tube equipped electrical cable WO2019146208A1 (en)

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JP2018011188A JP2019129105A (en) 2018-01-26 2018-01-26 Electric wire with heat-shrinkable tubing
JP2018-011188 2018-01-26

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WO2019146208A1 true WO2019146208A1 (en) 2019-08-01

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005339850A (en) * 2004-05-25 2005-12-08 Furukawa Electric Co Ltd:The Waterproof structure of terminal for aluminum wire cable
JP2008135278A (en) * 2006-11-28 2008-06-12 Sumitomo Wiring Syst Ltd Electric cable with terminal and terminal device
JP2013098161A (en) * 2011-11-07 2013-05-20 Toyota Motor Corp Connection member, and waterproof connection structure
JP2015015207A (en) * 2013-07-08 2015-01-22 株式会社オートネットワーク技術研究所 Terminal fitting and wiring harness
FR3022406A1 (en) * 2014-06-16 2015-12-18 Leoni Wiring Systems France ELECTRICAL CONNECTING DEVICE FOR A VEHICLE ELECTRICAL CIRCUIT
JP2018014313A (en) * 2016-07-06 2018-01-25 株式会社フジクラ Electric wire with terminal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005339850A (en) * 2004-05-25 2005-12-08 Furukawa Electric Co Ltd:The Waterproof structure of terminal for aluminum wire cable
JP2008135278A (en) * 2006-11-28 2008-06-12 Sumitomo Wiring Syst Ltd Electric cable with terminal and terminal device
JP2013098161A (en) * 2011-11-07 2013-05-20 Toyota Motor Corp Connection member, and waterproof connection structure
JP2015015207A (en) * 2013-07-08 2015-01-22 株式会社オートネットワーク技術研究所 Terminal fitting and wiring harness
FR3022406A1 (en) * 2014-06-16 2015-12-18 Leoni Wiring Systems France ELECTRICAL CONNECTING DEVICE FOR A VEHICLE ELECTRICAL CIRCUIT
JP2018014313A (en) * 2016-07-06 2018-01-25 株式会社フジクラ Electric wire with terminal

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