WO2019155705A1 - Electric wire equipped with heat-shrinkable tube - Google Patents

Electric wire equipped with heat-shrinkable tube Download PDF

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Publication number
WO2019155705A1
WO2019155705A1 PCT/JP2018/041369 JP2018041369W WO2019155705A1 WO 2019155705 A1 WO2019155705 A1 WO 2019155705A1 JP 2018041369 W JP2018041369 W JP 2018041369W WO 2019155705 A1 WO2019155705 A1 WO 2019155705A1
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WO
WIPO (PCT)
Prior art keywords
electric wire
plate
heat
shrinkable tube
extension
Prior art date
Application number
PCT/JP2018/041369
Other languages
French (fr)
Japanese (ja)
Inventor
佑樹 矢部
須藤　博
幸康 坂本
宏介 蓮井
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 WO2019155705A1 publication Critical patent/WO2019155705A1/en

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    • 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
    • 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
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve

Definitions

  • This invention relates to a technique for preventing corrosion at a connection portion between a terminal and an electric wire.
  • Patent Document 1 discloses a technique for preventing contact corrosion between different metals in a connecting portion between the terminal and the electric wire by covering the connecting portion with a heat-shrinkable tube with an adhesive.
  • the terminal is connected to the end portion of the electric wire, and one end of the heat shrinkable tube is located in the middle portion of the terminal, and the other is located in the middle portion of the electric wire.
  • the terminal may be connected to the middle part of the wire. Even in this case, when the terminal and the core wire of the electric wire are made of different metals, it is necessary to protect the connection portion depending on the location of the electric wire with terminal.
  • an object of the present invention is to provide a technique capable of satisfactorily preventing corrosion at the connection portion between the terminal and the electric wire when the terminal is connected to the middle portion of the electric wire.
  • an electric wire with a heat-shrinkable tube includes a core wire, and an insulating coating having a first covering portion and a second covering portion that cover the core wire with a space therebetween, An electric wire in which an intermediate exposed portion where the core wire is exposed is formed between the first covering portion and the second covering portion, an electric wire connecting portion connected to the intermediate exposed portion, and the first electric wire connecting portion to the first electric wire connecting portion.
  • a plate-like extension portion extending to the covering portion side and a mating connection portion projecting from the plate-like extension portion are formed, and a circulation space is formed in the plate-like extension portion so as to open on both sides thereof.
  • a heat-shrinkable tube that covers at least a region from the connecting portion between the wire connecting portion and the intermediate exposed portion to the distribution space in the plate-like extending portion, in a heat-shrinked state.
  • the inner region of the heat shrinkable tube is provided inside the heat shrinkable tube. And a bonding agent to the water.
  • a 2nd aspect is an electric wire with a heat contraction tube which concerns on a 1st aspect, Comprising:
  • the cross-sectional area of the said core wire shall be 15 mm ⁇ 2 > or more.
  • the third aspect is an electric wire with a heat-shrinkable tube according to the first or second aspect, in which the intermediate exposed portion and the electric wire connecting portion are ultrasonically bonded.
  • a 4th aspect is an electric wire with a heat contraction tube which concerns on any one 1st to 3rd aspect, Comprising: The width
  • a fifth aspect is the electric wire with a heat-shrinkable tube according to any one of the first to fourth aspects, wherein the flow space is in the direction along the longitudinal direction of the plate-like extension part. It is formed in the position which overlaps with 1 coating
  • a 6th aspect is an electric wire with a heat contraction tube which concerns on any one 1st to 5th aspect, Comprising: The said distribution space is formed in the said plate-shaped extension part by the through-hole opened on the both surface side Including
  • a 7th aspect is an electric wire with a heat contraction tube which concerns on a 6th aspect, Comprising: The said through-hole is formed in the width
  • An eighth aspect is an electric wire with a heat-shrinkable tube according to the sixth or seventh aspect, wherein the through hole opens on both sides of a contact portion between the plate-like extension part and the first covering part. It is what.
  • a ninth aspect is an electric wire with a heat-shrinkable tube according to any one of the first to eighth aspects, wherein the distribution space is a recess formed in at least one of both side parts of the plate-like extension part. Including those formed by.
  • the tenth aspect is an electric wire with a heat-shrinkable tube according to the ninth aspect, wherein the recess is formed on both sides of the plate-like extension part.
  • An eleventh aspect is an electric wire with a heat-shrinkable tube according to the tenth aspect, wherein the plurality of concave portions formed on both side portions of the plate-like extension portion are in the longitudinal direction of the plate-like extension portion. They are formed at positions shifted from each other.
  • the adhesive in the heat-shrinkable tube easily reaches the gap between the plate-like extension portion of the terminal and the electric wire through the circulation space formed in the plate-like extension portion. For this reason, 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 well.
  • the cross-sectional area of the core wire when the cross-sectional area of the core wire is 15 mm 2 or more, the electric wire becomes thicker, and the adhesive hardly reaches the gap between the plate-like extension portion of the terminal and the electric wire.
  • the plate-like extension part has a circulation space that opens on both sides, the adhesive in the heat-shrinkable tube passes through the circulation space formed in the plate-like extension part. In particular, it is easy to reach the gap between the plate-like extension portion of the terminal and the electric wire, which is particularly effective.
  • the plate-like extension portion and the insulating coating are close to each other, and the adhesive is connected to the plate-like extension portion of the terminal. Difficult to reach the gap between the wires.
  • the plate-like extension part has a circulation space that opens on both sides, the adhesive in the heat-shrinkable tube passes through the circulation space formed in the plate-like extension part. In particular, it is easy to reach the gap between the plate-like extension portion of the terminal and the electric wire, which is particularly effective.
  • both edges of the plate-like extension part are close to the inner peripheral surface of the heat shrinkable tube or pushed.
  • the adhesive is difficult to reach the gap between the plate-like extension portion of the terminal and the electric wire.
  • the plate-like extension part has a circulation space that opens on both sides, the adhesive in the heat-shrinkable tube passes through the circulation space formed in the plate-like extension part. In particular, it is easy to reach the gap between the plate-like extension portion of the terminal and the electric wire, which is particularly effective.
  • the adhesive is extended to the plate-like shape of the terminal. It is easy to reach the gap between the portion and the first covering portion of the electric wire.
  • the adhesive easily passes through the flow space in the through hole formed in the plate-like extension portion and reaches the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire.
  • the through hole is less likely to be blocked by the first covering portion, and the adhesive extends through the through space in the through hole formed in the plate-like extension portion to the plate-like extension of the terminal. It is easy to reach the gap between the portion and the first covering portion of the electric wire.
  • the adhesive easily spreads from both sides of the contact portion between the plate-like extension portion and the first covering portion to the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire.
  • the adhesive is distributed in the recess formed in the plate-like extension part. It passes through the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire.
  • the adhesive can easily reach the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire through the recesses formed on both sides of the plate-like extension portion.
  • the plurality of recesses formed on both sides of the plate-like extension part are formed at positions shifted from each other in the longitudinal direction of the plate-like extension part. Some strength can be secured.
  • FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
  • FIG. 3 is a transverse sectional view taken along line III-III in FIG.
  • FIG. 10 is a cross-sectional view taken along line XX in FIG. 9. It is a perspective view which shows a terminal. It is a perspective view which shows the terminal which concerns on a 2nd modification.
  • Drawing 1 is a side view showing electric wire 10 with a heat contraction tube concerning a 1st embodiment.
  • FIG. 2 is a cross-sectional view taken along line II-II in FIG. 3 is a cross-sectional view taken along line III-III in 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 an electric wire 12, a terminal 20 connected to an intermediate portion of the electric wire 12, a heat shrinkable tube 40 covering a region including a connection portion between the electric wire 12 and the terminal 20, and a heat shrinkable tube 40. And an adhesive 50 for water-stopping the inner region.
  • the electric wire 12 is used, for example, as a wiring material that connects electric devices mounted on a vehicle.
  • the electric wire 12 includes a core wire 13 and an insulating coating 16 that covers the periphery of the core wire 13. There is no insulation coating 16 in the middle portion in the longitudinal direction of the electric wire 12, and an intermediate exposed portion 14 where the core wire 13 is exposed is formed.
  • the core wire 13 is composed of one or more strands 15.
  • the strand 15 is made of a conductive material such as copper, copper alloy, aluminum, aluminum alloy.
  • the core wire 13 is described as a stranded wire in which a plurality of strands 15 formed of aluminum, an 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 paint such as enamel paint around the core wire 13. It is formed.
  • the insulating coating 16 has a first covering portion 17 and a second covering portion 18.
  • coated part 18 are provided at intervals along the longitudinal direction of the core wire 13, and have covered the circumference
  • the first covering portion 17, the second covering portion 18, and the intermediate exposed portion are peeled off at a middle portion of the electric wire uniformly coated along the longitudinal direction with respect to the core wire 13. Part 14 is formed.
  • the cross-sectional area of the core wire 13 is not particularly limited.
  • the cross-sectional area of the core wire 13 may be 15 mm 2 or more.
  • the core wire 13 is relatively thick, and the electric wire 12 covering the core wire 13 with the insulating coating 16 is also relatively thick.
  • the contact width between the insulating coating 16 of the electric wire 12 and one main surface of the plate-like extension portion 24 tends to be relatively thick.
  • the terminal 20 is connected to the middle part of the electric wire 12. Such a terminal 20 is also called an intermediate terminal.
  • the terminal 20 includes an electric wire connection part 22, a plate-like extension part 24, and a counterpart connection part 32, and a distribution space 26 ⁇ / b> S is formed in the plate-like extension part 24.
  • the terminal 20 further includes a coated crimping portion 36.
  • the terminal 20 is formed by punching and bending a single conductive plate material such as copper or copper alloy.
  • the terminal 20 may be plated with tin or the like as necessary.
  • the wire connecting part 22 is connected to the intermediate exposed part 14.
  • the wire connection part 22 is formed in a flat plate shape.
  • the electric wire connecting part 22 and the intermediate exposed part 14 are connected by ultrasonic bonding.
  • middle exposure part 14 is not restricted to ultrasonic joining, For example, it may connect by other weldings, such as resistance welding.
  • the electric wire connecting portion may be connected to the intermediate exposed portion by crimping.
  • the wire connecting part is formed in a shape including a bottom part and a crimping piece standing on the bottom part and crimped to the intermediate exposed part.
  • the plate-like extension portion 24 is formed in a plate shape that extends from the wire connection portion 22 to the first covering portion 17 side.
  • the plate-like extension part 24 is formed in a flat plate shape having the same width and the same thickness as the wire connection part 22.
  • the plate-like extension part 24 extends beyond the edge of the first covering part 17 on the intermediate exposed part 14 side to a position facing the intermediate part of the first covering part 17.
  • the plate-like extension portion 24 may be formed in a curved plate shape that curves along the outer periphery of the first covering portion 17.
  • the thickness and width of the plate-like extension portion 24 are set in consideration of the allowable current, the required strength, and the like.
  • the width of the plate-like extension part 24 may be equal to or larger than the diameter of the first covering part 17 or may be larger than the diameter of the first covering part 17.
  • FIG. 2 shows a case where the width of the plate-like extension part 24 is larger than the diameter of the first covering part 17.
  • the mating side connection part 32 protrudes from the plate-like extension part 24.
  • the mating side connection part 32 is formed at the tip end part of the plate-like extension part 24 on the side opposite to the wire connection part 22 so as to protrude on the opposite side with respect to the intermediate exposure part 14.
  • the mating connection part 32 is formed in a shape that can be bolted. Specifically, the mating connection portion 32 extends from the tip portion along the extending direction of the plate-like extension portion 24 so as to be orthogonal to the plate-like extension portion 24.
  • a through hole 34 through which a bolt can be inserted is formed in the mating side connection portion 32.
  • the counterpart connection part may be formed so as to extend laterally from the tip of the plate-like extension part.
  • the covering crimping part 36 is provided on the opposite side to the plate-like extension part 24 with respect to the wire connection part 22.
  • the covering crimping part 36 is crimped to the second covering part 18.
  • the covering crimping part 36 includes a bottom part 37 extending from the electric wire connection part 22 to the side opposite to the plate-like extension part 24, and a pair of crimping pieces 38 erected on the bottom part 37.
  • the bottom 37 is bent in a curved shape.
  • the crimping piece 38 is caulked and deformed into a shape that sandwiches the second covering portion 18 together with the bottom portion 37.
  • the covering crimping part 36 may be omitted.
  • the plate-like extension part 24 is formed with a circulation space 26S that opens on both sides thereof.
  • the distribution space 26 ⁇ / b> S is formed at a position overlapping the first covering portion 17 in the direction along the longitudinal direction of the plate-like extension portion 24.
  • the circulation space 26 ⁇ / b> S is formed in a position overlapping the first covering part 17, and the direction along the longitudinal direction of the plate-like extension part 24.
  • the case where the entire circulation space 26S overlaps the first covering portion 17 and the case where a part of the circulation space overlaps the first covering portion are included.
  • FIG. 1 shows the former case.
  • the distribution space may not be formed at a position overlapping the first covering portion in a direction along the longitudinal direction of the plate-like extension portion, but may be formed at a position overlapping the intermediate exposure portion.
  • the distribution space 26S is open on both sides of the plate-like extension part 24, whereby the adhesive 50 in a fluid state is passed from one side of the both sides of the plate-like extension part 24 to the other through the distribution space 26S. Any space can be used as long as it can flow.
  • the plate-like extension portion 24 is formed with through holes 26 that are open on both sides thereof, and a through space 26S is formed by the through holes 26.
  • the through hole 26 is a portion of the plate-like extension portion 24 that overlaps the first covering portion 17 in the longitudinal direction of the plate-like extension portion 24, and the width of the plate-like extension portion 24. It is formed at the center of the direction.
  • the shape of the through hole 26 is not particularly limited, and may be a round hole, an elliptical round hole, or a polygonal hole (triangular hole, square hole) shape.
  • FIG. 4 illustrates a case where the through hole 26 has a round hole shape.
  • the through hole 26 is formed to have a width W1 larger than the contact width W2 between the plate-like extension part 24 and the first covering part 17.
  • the intermediate exposed portion 14 is ultrasonically bonded to one main surface of the wire connecting portion 22.
  • the intermediate exposed portion 14 is strongly pressed against one main surface of the wire connecting portion 22, and ultrasonic vibration is applied to both.
  • coated parts 17 might be pressed to the one main surface of the plate-shaped extension part 24 to some extent.
  • the insulating coating 16 of the electric wire 12 is not a complete rigid body, and may be deformed to some extent by contacting one main surface of the plate-like extension portion 24.
  • coated part 17 and the plate-shaped extension part 24 can carry out surface contact in the strip
  • the width W1 of the through hole 26 (the dimension in the width direction of the plate-like extension portion 24) is smaller than the width (contact width) W2 of the surface contact region R, the through hole 26 is blocked by the first covering portion 17. There is a possibility. Therefore, when the width W1 of the through hole 26 is formed to be larger than the contact width W2 between the plate-like extension portion 24 and the first covering portion 17, the through-hole 26 extends from the first covering portion 17 to the plate-like extension. It protrudes from the surface contact region R with the protruding portion 24. Thereby, the adhesive 50 easily flows between both surfaces of the plate-like extension part 24 through the circulation space 26 ⁇ / b> S in the through hole 26.
  • the width W1 of the through hole 26 is, for example, preferably 4 mm or more, and more preferably 5 mm or more.
  • the through hole 26 may be opened on both sides of the surface contact region R which is a contact portion between the plate-like extension part 24 and the first covering part 17.
  • the through hole 26 is formed in the center in the width direction of the plate-like extension portion 24. Further, the width W1 of the through hole 26 is larger than the width (contact width) W2 of the surface contact region R. Further, the intermediate exposed portion 14 is connected to the electric wire connecting portion 22 so that the intermediate exposed portion 14 is located in the central portion in the width direction of the electric wire connecting portion 22, and the first covering portion 17 extends along the central line in the width direction of the plate-like extension portion 24. It extends to the plate-like extension part 24 side. For this reason, the surface contact region R between the plate-like extension portion 24 and the first covering portion 17 extends along the center line in the width direction of the one main surface of the plate-like extension portion 24, and the through hole 26.
  • both side portions in the width direction of the plate-like extending portion 24 are opened on both sides of the surface contact region R. For this reason, the adhesive 50 in a fluid state easily flows between both surfaces of the plate-like extension portion 24 through the through holes 26 on both sides of the surface contact region R.
  • the adhesive in a fluid state flows between both surfaces of the plate-like extension portion 24 on the one side of the surface contact region R.
  • the heat-shrinkable tube 40 covers at least the region from the connecting portion between the wire connecting portion 22 and the intermediate exposed portion 14 to the distribution space 26S in the plate-like extending portion 24 in a heat-shrinked state.
  • one end portion of the heat shrinkable tube 40 covers the second covering portion 18.
  • one end portion of the heat shrinkable tube 40 covers the second covering portion 18 at a position beyond the covering crimping portion 36.
  • one end portion of the heat shrinkable tube 40 is heat-shrinked into a shape along the outer shape of the second covering portion 18, and the gap between the heat-shrinkable tube 40 and the second covering portion 18 is filled with the adhesive 50. It has become easier.
  • the other end of the heat-shrinkable tube 40 covers the front end side of the plate-like extension part 24 rather than the part where the flow space 26S is formed.
  • the other end portion of the heat-shrinkable tube 40 covers a position in the vicinity of the counterpart connection portion 32 here.
  • the heat-shrinkable tube 40 is a tubular member formed of a synthetic resin such as a polyolefin resin or a nylon resin, for example.
  • the heat-shrinkable tube 40B before shrinkage is obtained by cooling a resin member formed into a thin tubular shape by extrusion molding after being stretched to a thick tubular shape in a heated state.
  • the heat-shrinkable tube 40B thus obtained has a shape memory characteristic that, when heated, shrinks to a thin tubular shape before being stretched.
  • the heat-shrinkable tube 40 in the electric wire 10 with a heat-shrinkable tube is in a heat-shrinked state, and in the process of transitioning from a thick tube to a thin tube by heat-shrinking, the connection portion between the terminal 20 and the wire 12 to be covered is covered.
  • the shape is deformed along the outer shape.
  • the adhesive 50 is provided inside the heat shrinkable tube 40.
  • the adhesive 50 stops the inner region of the heat shrinkable tube 40.
  • a polyamide-based thermoplastic hot melt adhesive or the like is used as the adhesive 50.
  • the adhesive 50 is not limited to the above, and a polyolefin-based thermoplastic hot melt adhesive 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 on the inner peripheral surface of the heat-shrinkable tube 40B before shrinkage, may be provided on the electric wire 12 side with the terminal 20, or may be both. Then, the adhesive 50 ⁇ / b> B becomes a flowable state by being heated together with the heat for shrinking the heat shrinkable tube 40, and flows so as to fill a gap in the inner region with the heat shrinkage of the heat shrinkable tube 40. .
  • the fluidized adhesive 50 is maintained in a state in which gaps in the inner region of the heat-shrinkable tube 40 are filled by being cooled and solidified, and becomes an adhesive 50 that stops 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 contraction tube is manufactured.
  • FIG. 6 only the heat-shrinkable tube 40B with the adhesive 50B is shown in a longitudinal sectional view.
  • the electric wire 12 having the intermediate exposed portion 14 where the core wire 13 is exposed in the intermediate portion and the terminal 20 in which the distribution space 26S is formed are prepared.
  • the electric wire 12 can be formed by peeling the middle part of the uniformly covered electric wire.
  • circulation space 26S can be formed by carrying out the press hole drilling, the cutting hole drilling process, etc. in a part of board
  • the terminal 20 is connected to the intermediate exposed portion 14.
  • middle exposure part 14 and the electric wire connection part 22 are welded with the ultrasonic welding apparatus abbreviate
  • the covering crimping part 36 is crimped to the second covering part 18 using a crimping device (not shown). Either the welding of the intermediate exposed portion 14 and the wire connecting portion 22 or the crimping of the covering crimp portion 36 may be performed first.
  • the heat shrinkable tube 40B is put on the connection portion between the terminal 20 and the electric wire 12.
  • a heat-shrinkable tube 40B with an adhesive 50B in which an adhesive 50B is applied in advance to the inner surface of the heat-shrinkable tube 40B before shrinkage is used.
  • the heat-shrinkable tube 40B can be easily positioned by, for example, abutting one end of the heat-shrinkable tube 40B against the mating connection portion 32.
  • the heat-shrinkable tube 40B placed on the connection portion between the terminal 20 and the electric wire 12 is heated and contracted 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 be in a fluid state.
  • the heat-shrinkable tube 40B thermally shrinks and the adhesive 50B flows, the gaps between the heat-shrinkable tube 40, the electric wires 12 and the terminals 20 are filled with the adhesive 50.
  • the adhesive 50 in the heat-shrinkable tube 40 passes through the distribution space 26 ⁇ / b> S formed in the plate-like extending portion 24 and extends in the plate-like shape of the terminal 20. It is easy to spread between the outlet 24 and the electric wire and fill the gap between them. For this reason, 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 satisfactorily prevented.
  • the adhesive agent 50 in the heat-shrinkable tube 40 is formed in the plate-like extension portion 24 when the plate-like extension portion 24 is formed with the flow space 26S opening on both sides thereof. It is effective because it easily reaches the gap between the plate-like extension 24 of the terminal 20 and the electric wire 12 through the distribution space 26S.
  • the plate-like extending portion 24 and the first covering portion 17 are close to each other, and the adhesive 50 is connected to the terminal 20. It is difficult to reach the gap between the plate-like extension part 24 and the first covering part 17.
  • the adhesive agent 50 in the heat-shrinkable tube 40 is formed in the plate-like extension portion 24 when the plate-like extension portion 24 is formed with the flow space 26S opening on both sides thereof. It is effective because it easily reaches the gap between the plate-like extension part 24 and the first covering part 17 through the circulation space 26S.
  • both edges of the plate-like extension portion 24 are close to the inner surface of the heat-shrinkable tube 40 that is thermally contracted or It tends to be in a pressed state. Then, the adhesive 50 accumulates in the space between the other main surface of the plate-like extension portion 24 (the surface opposite to the intermediate exposed portion 14) and the heat-shrinkable tube 40, and the plate-like extension portion 24 and the first It becomes difficult to spread between the covering portion 17.
  • the adhesive 50 that has passed through the circulation space 26S It can flow directly between the plate-like extension part 24 and the first covering part 17, and the adhesive 50 can easily spread between the plate-like extension part 24 and the first covering part 17.
  • the circulation space 26S is formed as a space in the through hole 26 formed in the plate-like extension portion 24, it is easy to secure the circulation space 26S in which the adhesive 50 flows, and the adhesive 50 is in the through hole 26. It is easy to reach the gap between the plate-like extension part 24 and the first covering part 17 through the distribution space 26S.
  • the through hole 26 is formed. Is hard to be blocked by the first covering portion 17, and the adhesive 50 passes through the flow space 26 ⁇ / b> S in the through hole 26 formed in the plate-like extending portion 24 and the plate-like extending portion 24 and the first covering portion. It is easy to reach the gap with the part 17.
  • the adhesive 50 is used for the plate-like extension portion 24 and the first covering portion. It becomes easy to reach the gap between the plate-like extension portion 24 and the first covering portion 17 from both sides of the surface contact region R with the 17, and it is easy to effectively fill the space between them.
  • FIG. 7 is a cross-sectional view showing an electric wire 110 with a heat-shrinkable tube according to a first modification
  • FIG. 8 is a perspective view showing a terminal 120 according to the modification.
  • one through-hole 126 is formed on one side of the center line of the plate-like extension part 124 corresponding to the plate-like extension part 24, and another through-hole 126 is formed on the other side of the center line. Is formed.
  • Two flow spaces 126S are formed by the two through holes 126.
  • the two through holes 126 penetrate the both sides of the plate-like extension part 124, respectively.
  • the shape of the through hole 126 is not particularly limited, and may be a round hole, an elliptical round hole, or a polygonal hole (triangular hole, square hole) shape.
  • FIG. 8 illustrates a case where the through hole 126 has a round hole shape.
  • the width of the through-hole 126 may be equal to or less than the width W2 of the surface contact region R that is the contact width between the plate-like extension part 124 and the first covering part 17.
  • the two through holes 126 are opened on both sides of the surface contact region R between the plate-like extension portion 124 and the first covering portion 17.
  • the entire opening of the two through holes 126 is open outside the surface contact region R between the plate-like extension portion 124 and the first covering portion 17.
  • the adhesive 50 in the heat-shrinkable tube 40 passes through the circulation space 126S formed by the two through holes 126 formed in the plate-like extension portion 124. It passes through between the plate-like extension part 124 of the terminal 120 and the electric wire and easily fills the gap between them. For this reason, when connecting the terminal 120 to the intermediate part of the electric wire 12, the connection part of the terminal 120 and the electric wire 12 can be satisfactorily prevented.
  • the adhesive 50 passes through the through holes 126 on both sides of the surface contact region R between the plate-like extension portion 124 and the first covering portion 17, and the gap between the plate-like extension portion 124 and the first covering portion 17. It's easy to get around and fill in between them effectively.
  • More through holes may be formed in the plate-like extension portion.
  • a plurality of through holes may be formed in a polka dot pattern with respect to the plate-like extension part.
  • a plurality of through holes may be formed on both side portions of the plate-like extension portion so as to form a row at intervals.
  • FIG. 9 is a side view showing the heat shrinkable tube-attached electric wire 210 according to the second embodiment.
  • FIG. 10 is a cross-sectional view taken along line XX of FIG.
  • FIG. 11 is a perspective view showing a terminal 220 according to the second embodiment.
  • the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the circulation space 26S is formed by the through hole 26 or the through hole 126 has been described.
  • the electric wire 210 with heat-shrinkable tube 210 according to the second embodiment an example in which the circulation space 226S is formed by at least one recess 226 will be described.
  • a concave portion 226 is formed in the plate-like extension portion 224 corresponding to the plate-like extension portion 24.
  • a plurality of (here, two) recesses 226 are formed.
  • the recess 226 includes a first recess 226a formed on one side of the plate-like extension 224 and a second recess 226b formed on the other side. That is, the recess 226 is formed on both sides of the plate-like extension 224.
  • the first recess 226a and the second recess 226b are formed by, for example, forming a cut with a rotary cutting tool or the like from both sides of a plate material constituting the plate-like extension portion 224, or punching with a punching die or the like. can do.
  • the first recess 226a is formed in a linear groove shape that is recessed from one side of the plate-like extension portion 224 toward the center of the plate-like extension portion 224 in the width direction.
  • the second recessed portion 226 b is formed in a linear groove shape that is recessed from the other side portion of the plate-like extension portion 224 toward the center in the width direction of the plate-like extension portion 224.
  • the first recess 226 a and the second recess 226 b extend from the side of the plate extension 224 along the width direction of the plate extension 224. It is formed in a slit shape that reaches the center in the direction.
  • the first recess 226a and the second recess 226b are formed at positions shifted from each other in the longitudinal direction of the plate-like extension 224.
  • the 1st recessed part 226a is formed in the position close
  • the 2nd recessed part 226b is formed in the position close
  • the strength is weakened.
  • the first concave portion 226a and the second concave portion 226b are formed at positions shifted from each other in the longitudinal direction of the plate-like extending portion 224, so that the recess forming portion is located in the longitudinal direction of the plate-like extending portion 224. It can disperse
  • the adhesive 50 is in the first recess It is easy to reach the gap between the plate-like extension part 224 and the first covering part 17 through the circulation space 226S in the second recess part 226b. For this reason, the connection part of the terminal 220 and the electric wire 12 can be satisfactorily prevented.
  • the adhesive 50 passes through the flow space 226S in the first concave portion 226a and the second concave portion 226b on both sides. Then, it flows into the contact portion between the plate-like extension portion 224 and the first covering portion 17 from both sides thereof. For this reason, the adhesive 50 can easily fill the gap between the plate-like extension part 224 and the first covering part 17.
  • first concave portion 226a and the second concave portion 226b are formed at positions shifted from each other in the longitudinal direction of the plate-like extension portion 224, the strength of the plate-like extension portion 224 can be ensured to some extent.
  • FIG. 12 is a perspective view showing a terminal 320 according to a second modification.
  • the recess 326 that forms the circulation space 326S is provided.
  • a first recess 326a and a second recess 326b are included.
  • a first recess 326a corresponding to the first recess 226a and a second recess 326b corresponding to the second recess 226b are formed at the same position in the longitudinal direction of the plate-like extension 324 corresponding to the plate-like extension 224. Yes.
  • the first concave portion 326 a is formed in a long and narrow groove shape extending from one side of the plate-like extension portion 324 to a portion before the center portion in the width direction of the plate-like extension portion 324.
  • the second recess 326b is formed in an elongated groove shape extending from the other side portion of the plate-like extension portion 324 to a portion just before the central portion in the width direction of the plate-like extension portion 324.
  • the part on the counterpart connection part 32 side and the part on the wire connection part 22 side are connected via a part between the first recess 326a and the second recess 326b.
  • the adhesive 50 passes through the flow space 326S in the first recess 326a and the second recess 326b, and extends in a plate shape. It is easy to reach the gap between 324 and the first covering portion 17. For this reason, the connection part of the terminal 320 and the electric wire 12 can be satisfactorily prevented.
  • the position, number, and shape examples of the recesses for forming the distribution space are not limited to those described in the second embodiment and the second modification.
  • a semicircular, triangular, square, or other polygonal recess may be formed.
  • the linear groove-shaped concave portion may extend obliquely with respect to the width direction of the plate-like extension portion, or the curved groove-shaped concave portion. May be formed.
  • a plurality of concave portions may be formed on each side portion of the plate-like extension portion.
  • the recessed part may be formed in the area
  • a recess may be formed only on one side of the plate-like extension.
  • the concave portion may be formed beyond the center line in the width direction of the plate-like extension portion, and preferably formed beyond the contact area between the plate-like extension portion and the first covering portion. .
  • the distribution space formed in the plate-like extension part may include one formed by a through hole and one formed by a recess.

Landscapes

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

Abstract

The purpose of the present invention is to provide a technology that, when connecting a terminal to an intermediate section of an electric wire, is capable of finely preventing corrosion at the connection between the terminal and the electric wire. This heat-shrinkable tube-equipped electric wire is provided with an electric wire, a terminal, a heat-shrinkable tube, and an adhesive. The electric wire comprises: a core wire; and an insulating coating having a first coating part and a second coating part, between which an intermediate exposed part is formed. The terminal comprises: an electric wire connecting part which is connected to the intermediate exposed part; a plate-like extension part which extends from the electric wire connecting part to the first coating part; and a counterpart-side connecting part that is formed so as to project from the plate-like extension part. The plate-like extension part has a circulation space that has openings on both surface sides of the plate-like extension part. The heat-shrinkable tube covers at least a region from the connection between the electric wire connecting part and the intermediate exposed part up to the circulation space in the plate-like extension part. The adhesive prevents water from entering the inner region of the heat-shrinkable tube.

Description

熱収縮チューブ付電線Wire with heat-shrinkable tube
　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。 This invention relates to a technique for preventing corrosion at a connection portion between a terminal and an electric 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 for preventing contact corrosion between different metals in a connecting portion between the terminal and the electric wire by covering the connecting portion with a heat-shrinkable tube with an adhesive. In Patent Document 1, the terminal is connected to the end portion of the electric wire, and one end of the heat shrinkable tube is located in the middle portion of the terminal, and the other is located in the middle portion of the electric 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である場合等には、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 terminal may be connected to the middle part of the wire. Even in this case, when the terminal and the core wire of the electric wire are made of different metals, it is necessary to protect the connection portion depending on the location of the electric 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 using the heat-shrinkable tube described in Patent Document 1 is applied to a terminal-attached electric wire whose terminal is connected to the middle portion of the electric wire, at least one of both ends of the heat-shrinkable tube overlaps the terminal and the electric wire. Will be located in the part. At this time, if the terminal and the electric wire are in contact with each other at the portion where the terminal and the electric wire overlap, the adhesive may not easily reach 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。 Therefore, an object of the present invention is to provide a technique capable of satisfactorily preventing corrosion at the connection portion between the terminal and the electric wire when the terminal is connected to the middle portion of the electric wire.
　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板状延出部と、前記板状延出部に突設された相手側接続部とを含み、前記板状延出部にその両面側に開口する流通空間が形成された端子と、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板状延出部のうち前記流通空間に至るまでの領域を少なくとも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-described problem, an electric wire with a heat-shrinkable tube according to a first aspect includes a core wire, and an insulating coating having a first covering portion and a second covering portion that cover the core wire with a space therebetween, An electric wire in which an intermediate exposed portion where the core wire is exposed is formed between the first covering portion and the second covering portion, an electric wire connecting portion connected to the intermediate exposed portion, and the first electric wire connecting portion to the first electric wire connecting portion. A plate-like extension portion extending to the covering portion side and a mating connection portion projecting from the plate-like extension portion are formed, and a circulation space is formed in the plate-like extension portion so as to open on both sides thereof. A heat-shrinkable tube that covers at least a region from the connecting portion between the wire connecting portion and the intermediate exposed portion to the distribution space in the plate-like extending portion, in a heat-shrinked state. The inner region of the heat shrinkable tube is provided inside the heat shrinkable tube. And a bonding agent to the water.
　第２の態様は、第１の態様に係る熱収縮チューブ付電線であって、前記芯線の断面積が１５ｍｍ２以上とされている。 A 2nd aspect is an electric wire with a heat contraction tube which concerns on a 1st aspect, Comprising: The cross-sectional area of the said core wire shall be 15 mm < 2 > or more.
　第３の態様は、第１又は第２の態様に係る熱収縮チューブ付電線であって、前記中間露出部と前記電線接続部とが超音波接合されているものである。 The third aspect is an electric wire with a heat-shrinkable tube according to the first or second aspect, in which the intermediate exposed portion and the electric wire connecting portion are ultrasonically bonded.
　第４の態様は、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、前記板状延出部の幅が、前記第１被覆部の径以上とされている。 A 4th aspect is an electric wire with a heat contraction tube which concerns on any one 1st to 3rd aspect, Comprising: The width | variety of the said plate-shaped extension part is made more than the diameter of the said 1st coating | coated part. .
　第５の態様は、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、前記流通空間は、前記板状延出部の長手方向に沿った方向において、前記第１被覆部と重なる位置に形成されているものである。 A fifth aspect is the electric wire with a heat-shrinkable tube according to any one of the first to fourth aspects, wherein the flow space is in the direction along the longitudinal direction of the plate-like extension part. It is formed in the position which overlaps with 1 coating | coated part.
　第６の態様は、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、前記流通空間は、前記板状延出部にその両面側に開口する貫通孔によって形成されたものを含む。 A 6th aspect is an electric wire with a heat contraction tube which concerns on any one 1st to 5th aspect, Comprising: The said distribution space is formed in the said plate-shaped extension part by the through-hole opened on the both surface side Including
　第７の態様は、第６の態様に係る熱収縮チューブ付電線であって、前記貫通孔は、前記板状延出部と前記第１被覆部との接触幅より大きい幅に形成されているものである。 A 7th aspect is an electric wire with a heat contraction tube which concerns on a 6th aspect, Comprising: The said through-hole is formed in the width | variety larger than the contact width of the said plate-shaped extension part and the said 1st coating | coated part. Is.
　第８の態様は、第６又は第７の態様に係る熱収縮チューブ付電線であって、前記貫通孔は、前記板状延出部と前記第１被覆部との接触部分の両側で開口しているものである。 An eighth aspect is an electric wire with a heat-shrinkable tube according to the sixth or seventh aspect, wherein the through hole opens on both sides of a contact portion between the plate-like extension part and the first covering part. It is what.
　第９の態様は、第１から第８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、前記流通空間は、前記板状延出部の両側部の少なくとも一方に形成された凹部によって形成されたものを含む。 A ninth aspect is an electric wire with a heat-shrinkable tube according to any one of the first to eighth aspects, wherein the distribution space is a recess formed in at least one of both side parts of the plate-like extension part. Including those formed by.
　第１０の態様は、第９の態様に係る熱収縮チューブ付電線であって、前記凹部は、前記板状延出部の両側部に形成されているものである。 The tenth aspect is an electric wire with a heat-shrinkable tube according to the ninth aspect, wherein the recess is formed on both sides of the plate-like extension part.
　第１１の態様は、第１０の態様に係る熱収縮チューブ付電線であって、前記板状延出部の両側部に形成された複数の前記凹部は、前記板状延出部の長手方向において互いにずれた位置に形成されているものである。 An eleventh aspect is an electric wire with a heat-shrinkable tube according to the tenth aspect, wherein the plurality of concave portions formed on both side portions of the plate-like extension portion are in the longitudinal direction of the plate-like extension portion. They are formed at positions shifted from each other.
　第１の態様によると、熱収縮チューブ内の接着剤は、板状延出部に形成された流通空間を通って、端子の板状延出部と電線との隙間に行き渡り易い。このため、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 the first aspect, the adhesive in the heat-shrinkable tube easily reaches the gap between the plate-like extension portion of the terminal and the electric wire through the circulation space formed in the plate-like extension portion. For this reason, 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 well.
　第２の態様のように、芯線の断面積が１５ｍｍ２以上であると、電線が太くなり、接着剤が、端子の板状延出部と電線との隙間に行き渡り難い。このような場合に、板状延出部にその両面側に開口する流通空間が形成されていると、熱収縮チューブ内の接着剤が、板状延出部に形成された流通空間を通って、端子の板状延出部と電線との隙間に行き渡り易くなり、特に、有効である。 As in the second aspect, when the cross-sectional area of the core wire is 15 mm 2 or more, the electric wire becomes thicker, and the adhesive hardly reaches the gap between the plate-like extension portion of the terminal and the electric wire. In such a case, if the plate-like extension part has a circulation space that opens on both sides, the adhesive in the heat-shrinkable tube passes through the circulation space formed in the plate-like extension part. In particular, it is easy to reach the gap between the plate-like extension portion of the terminal and the electric wire, which is particularly effective.
　第３の態様のように、中間露出部と電線接続部とが超音波接合されていると、板状延出部と絶縁被覆とが近接し、接着剤が、端子の板状延出部と電線との隙間に行き渡り難い。このような場合に、板状延出部にその両面側に開口する流通空間が形成されていると、熱収縮チューブ内の接着剤が、板状延出部に形成された流通空間を通って、端子の板状延出部と電線との隙間に行き渡り易くなり、特に、有効である。 When the intermediate exposed portion and the wire connecting portion are ultrasonically bonded as in the third aspect, the plate-like extension portion and the insulating coating are close to each other, and the adhesive is connected to the plate-like extension portion of the terminal. Difficult to reach the gap between the wires. In such a case, if the plate-like extension part has a circulation space that opens on both sides, the adhesive in the heat-shrinkable tube passes through the circulation space formed in the plate-like extension part. In particular, it is easy to reach the gap between the plate-like extension portion of the terminal and the electric wire, which is particularly effective.
　第４の態様のように、板状延出部の幅が、第１被覆部の径以上であると、板状延出部の両縁が熱収縮チューブの内周面に近接し或は押し当てられ、接着剤が、端子の板状延出部と電線との隙間に行き渡り難い。このような場合に、板状延出部にその両面側に開口する流通空間が形成されていると、熱収縮チューブ内の接着剤が、板状延出部に形成された流通空間を通って、端子の板状延出部と電線との隙間に行き渡り易くなり、特に、有効である。 As in the fourth aspect, when the width of the plate-like extension part is equal to or larger than the diameter of the first covering part, both edges of the plate-like extension part are close to the inner peripheral surface of the heat shrinkable tube or pushed. The adhesive is difficult to reach the gap between the plate-like extension portion of the terminal and the electric wire. In such a case, if the plate-like extension part has a circulation space that opens on both sides, the adhesive in the heat-shrinkable tube passes through the circulation space formed in the plate-like extension part. In particular, it is easy to reach the gap between the plate-like extension portion of the terminal and the electric wire, which is particularly effective.
　第５の態様によると、前記流通空間は、板状延出部の長手方向に沿った方向において、第１被覆部と重なる位置に形成されているため、接着剤が、端子の板状延出部と電線の第１被覆部との隙間に行き渡り易い。 According to the fifth aspect, since the distribution space is formed at a position overlapping the first covering portion in the direction along the longitudinal direction of the plate-like extension portion, the adhesive is extended to the plate-like shape of the terminal. It is easy to reach the gap between the portion and the first covering portion of the electric wire.
　第６の態様によると、接着剤が、板状延出部に形成された貫通孔内の流通空間を通って、端子の板状延出部と電線の第１被覆部との隙間に行き渡り易い。 According to the sixth aspect, the adhesive easily passes through the flow space in the through hole formed in the plate-like extension portion and reaches the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire. .
　第７の態様によると、貫通孔が第１被覆部によって塞がれ難くなり、接着剤が、板状延出部に形成された貫通孔内の流通空間を通って、端子の板状延出部と電線の第１被覆部との隙間に行き渡り易い。 According to the seventh aspect, the through hole is less likely to be blocked by the first covering portion, and the adhesive extends through the through space in the through hole formed in the plate-like extension portion to the plate-like extension of the terminal. It is easy to reach the gap between the portion and the first covering portion of the electric wire.
　第８の態様によると、接着剤が、板状延出部と第１被覆部との接触部分の両側から、端子の板状延出部と電線の第１被覆部との隙間に行き渡り易くなる。 According to the eighth aspect, the adhesive easily spreads from both sides of the contact portion between the plate-like extension portion and the first covering portion to the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire. .
　第９の態様によると、熱収縮チューブが熱収縮し、板状延出部の両側部に接触した状態となっても、接着剤が、板状延出部に形成された凹部内の流通空間を通って、端子の板状延出部と電線の第１被覆部との隙間に行き渡り易い。 According to the ninth aspect, even if the heat-shrinkable tube is heat-shrinked and comes into contact with both sides of the plate-like extension part, the adhesive is distributed in the recess formed in the plate-like extension part. It passes through the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire.
　第１０の態様によると、接着剤が、板状延出部の両側部に形成された凹部を通って、端子の板状延出部と電線の第１被覆部との隙間に行き渡り易くなる。 According to the tenth aspect, the adhesive can easily reach the gap between the plate-like extension portion of the terminal and the first covering portion of the electric wire through the recesses formed on both sides of the plate-like extension portion.
　第１１の態様によると、板状延出部の両側部に形成された複数の凹部が、板状延出部の長手方向において互いにずれた位置に形成されているため、板状延出部の強度をある程度確保できる。 According to the eleventh aspect, the plurality of recesses formed on both sides of the plate-like extension part are formed at positions shifted from each other in the longitudinal direction of the plate-like extension part. Some strength can be secured.
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 transverse sectional view taken along line III-III in FIG. 端子を示す斜視図である。It is a perspective view which shows a terminal. 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 explanatory drawing which shows a mode that an electric wire with a heat contraction tube 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 explanatory drawing which shows a mode that an electric wire with a heat contraction tube is manufactured. 第１変形例に係る熱収縮チューブ付電線を示す断面図である。It is sectional drawing which shows the electric wire with a heat contraction tube which concerns on a 1st modification. 端子を示す斜視図である。It is a perspective view which shows a terminal. 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 which shows the electric wire with a heat contraction tube which concerns on 2nd Embodiment. 図９のＸ－Ｘ線に沿って切断した横断面図である。FIG. 10 is a cross-sectional view taken along line XX in FIG. 9. 端子を示す斜視図である。It is a perspective view which shows a terminal. 第２変形例に係る端子を示す斜視図である。It is a perspective view which shows the terminal which concerns on a 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 electric wire with a heat-shrinkable tube according to the first embodiment will be described. Drawing 1 is a side view showing electric wire 10 with a heat contraction tube concerning a 1st embodiment. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 3 is a cross-sectional view taken along line III-III in 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 an electric wire 12, a terminal 20 connected to an intermediate portion of the electric wire 12, a heat shrinkable tube 40 covering a region including a connection portion between the electric wire 12 and the terminal 20, and a heat shrinkable tube 40. And an adhesive 50 for water-stopping 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の長手方向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 that connects electric devices mounted on a vehicle. The electric wire 12 includes a core wire 13 and an insulating coating 16 that covers the periphery of the core wire 13. There is no insulation coating 16 in the middle portion in the longitudinal direction of the electric wire 12, and an intermediate exposed portion 14 where the core wire 13 is exposed is formed.
　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 wire 13 is composed of one or more strands 15. The strand 15 is made of a conductive material such as copper, copper alloy, aluminum, aluminum alloy. Here, the core wire 13 is described as a stranded wire in which a plurality of strands 15 formed of aluminum, an 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 paint such as enamel paint 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 1st coating | coated part 17 and the 2nd coating | coated part 18 are provided at intervals along the longitudinal direction of the core wire 13, and have covered the circumference | surroundings of the core wire 13, respectively. Accordingly, the intermediate exposed portion 14 is formed between the first covering portion 17 and the second covering portion 18 in the electric wire 12. For example, the first covering portion 17, the second covering portion 18, and the intermediate exposed portion are peeled off at a middle portion of the electric wire uniformly coated along the longitudinal direction with respect to the core wire 13. Part 14 is formed.
　芯線１３の断面積は特に限定されない。芯線１３の断面積は、１５ｍｍ２以上であってもよい。芯線１３の断面積が、１５ｍｍ２以上であると、芯線１３は比較的太くなり、当該芯線１３を絶縁被覆１６で覆った電線１２も比較的太くなる。太い電線１２が後述する板状延出部２４に接すると、電線１２の絶縁被覆１６と板状延出部２４の一方主面との接触幅も比較的太幅になりがちである。 The cross-sectional area of the core wire 13 is not particularly limited. The cross-sectional area of the core wire 13 may be 15 mm 2 or more. When the cross-sectional area of the core wire 13 is 15 mm 2 or more, the core wire 13 is relatively thick, and the electric wire 12 covering the core wire 13 with the insulating coating 16 is also relatively thick. When the thick electric wire 12 is in contact with a plate-like extension portion 24 described later, the contact width between the insulating coating 16 of the electric wire 12 and one main surface of the plate-like extension portion 24 tends to be relatively thick.
　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、板状延出部２４と、相手側接続部３２とを含み、板状延出部２４に流通空間２６Ｓが形成されている。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 part of the electric wire 12. Such a terminal 20 is also called an intermediate terminal. The terminal 20 includes an electric wire connection part 22, a plate-like extension part 24, and a counterpart connection part 32, and a distribution space 26 </ b> S is formed in the plate-like extension part 24. Here, the terminal 20 further includes a coated crimping portion 36. The terminal 20 is formed by punching and bending a single conductive plate material such as copper or copper alloy. The terminal 20 may be plated with tin or the like as necessary.
　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、超音波接合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との接続態様は超音波接合に限られるものではなく、例えば、抵抗溶接等、他の溶接によって接続されるものであってもよい。また、電線接続部が中間露出部に圧着によって接続されてもよい。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 connecting part 22 is connected to the intermediate exposed part 14. Here, the wire connection part 22 is formed in a flat plate shape. The electric wire connecting part 22 and the intermediate exposed part 14 are connected by ultrasonic bonding. But the connection aspect of the electric wire connection part 22 and the intermediate | middle exposure part 14 is not restricted to ultrasonic joining, For example, it may connect by other weldings, such as resistance welding. Further, the electric wire connecting portion may be connected to the intermediate exposed portion by crimping. When the connection mode by crimping is employed, the wire connecting part is formed in a shape including a bottom part and a crimping piece standing on the bottom part and crimped to the intermediate exposed part.
　板状延出部２４は、電線接続部２２から第１被覆部１７側に延出する板状に形成されている。ここでは板状延出部２４は、電線接続部２２と同幅でかつ同厚みの平板状に形成されている。板状延出部２４は、第１被覆部１７のうち中間露出部１４側の縁を越えて第１被覆部１７の中間部と対向する位置まで延出している。板状延出部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 plate-like extension portion 24 is formed in a plate shape that extends from the wire connection portion 22 to the first covering portion 17 side. Here, the plate-like extension part 24 is formed in a flat plate shape having the same width and the same thickness as the wire connection part 22. The plate-like extension part 24 extends beyond the edge of the first covering part 17 on the intermediate exposed part 14 side to a position facing the intermediate part of the first covering part 17. The plate-like extension portion 24 may be formed in a curved plate shape that curves along the outer periphery of the first covering portion 17.
　板状延出部２４の厚み、幅は、許容電流、必要とされる強度等に鑑みて設定される。板状延出部２４の幅は、第１被覆部１７の径以上であってもよく、第１被覆部１７の径を越える大きさであってもよい。図２では、板状延出部２４の幅が、第１被覆部１７の径を越える大きさである場合が示されている。 The thickness and width of the plate-like extension portion 24 are set in consideration of the allowable current, the required strength, and the like. The width of the plate-like extension part 24 may be equal to or larger than the diameter of the first covering part 17 or may be larger than the diameter of the first covering part 17. FIG. 2 shows a case where the width of the plate-like extension part 24 is larger than the diameter of the first covering part 17.
　相手側接続部３２は、板状延出部２４に突設されている。ここでは、相手側接続部３２は、板状延出部２４のうち電線接続部２２に対して反対側の先端部に、中間露出部１４に対して反対側に突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、板状延出部２４の延出方向に沿った先端部から板状延出部２４と直交するように延出している。この相手側接続部３２に、ボルトを挿通可能な貫通孔３４が形成されている。相手側接続部は、板状延出部の先端部から側方に延出するように形成されていてもよい。 The mating side connection part 32 protrudes from the plate-like extension part 24. Here, the mating side connection part 32 is formed at the tip end part of the plate-like extension part 24 on the side opposite to the wire connection part 22 so as to protrude on the opposite side with respect to the intermediate exposure part 14. . The mating connection part 32 is formed in a shape that can be bolted. Specifically, the mating connection portion 32 extends from the tip portion along the extending direction of the plate-like extension portion 24 so as to be orthogonal to the plate-like extension portion 24. A through hole 34 through which a bolt can be inserted is formed in the mating side connection portion 32. The counterpart connection part may be formed so as to extend laterally from the tip of the plate-like extension part.
　被覆圧着部３６は、電線接続部２２に対して板状延出部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から板状延出部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。被覆圧着部３６は省略されてもよい。 The covering crimping part 36 is provided on the opposite side to the plate-like extension part 24 with respect to the wire connection part 22. The covering crimping part 36 is crimped to the second covering part 18. The covering crimping part 36 includes a bottom part 37 extending from the electric wire connection part 22 to the side opposite to the plate-like extension part 24, and a pair of crimping pieces 38 erected on the bottom part 37. For example, the bottom 37 is bent in a curved shape. The crimping piece 38 is caulked and deformed into a shape that sandwiches the second covering portion 18 together with the bottom portion 37. The covering crimping part 36 may be omitted.
　板状延出部２４には、その両面側に開口する流通空間２６Ｓが形成されている。ここでは、流通空間２６Ｓは、板状延出部２４の長手方向に沿った方向において、第１被覆部１７と重なる位置に形成されている。流通空間２６Ｓは、板状延出部２４の長手方向に沿った方向において、第１被覆部１７と重なる位置に形成されている場合には、板状延出部２４の長手方向に沿った方向において、流通空間２６Ｓの全体が第１被覆部１７と重なっている場合、及び、流通空間の一部が第１被覆部と重なっている場合を含む。図１では、前者の場合が示されている。流通空間は、板状延出部の長手方向に沿った方向において、第１被覆部と重なる位置に形成されず、中間露出部と重なる位置に形成されていてもよい。 The plate-like extension part 24 is formed with a circulation space 26S that opens on both sides thereof. Here, the distribution space 26 </ b> S is formed at a position overlapping the first covering portion 17 in the direction along the longitudinal direction of the plate-like extension portion 24. In the direction along the longitudinal direction of the plate-like extension part 24, the circulation space 26 </ b> S is formed in a position overlapping the first covering part 17, and the direction along the longitudinal direction of the plate-like extension part 24. The case where the entire circulation space 26S overlaps the first covering portion 17 and the case where a part of the circulation space overlaps the first covering portion are included. FIG. 1 shows the former case. The distribution space may not be formed at a position overlapping the first covering portion in a direction along the longitudinal direction of the plate-like extension portion, but may be formed at a position overlapping the intermediate exposure portion.
　流通空間２６Ｓは、板状延出部２４の両面側に開口しており、これにより、流動状態にある接着剤５０を、当該流通空間２６Ｓを通じて、板状延出部２４の両面の一方から他方に流動させることができる空間であればよい。 The distribution space 26S is open on both sides of the plate-like extension part 24, whereby the adhesive 50 in a fluid state is passed from one side of the both sides of the plate-like extension part 24 to the other through the distribution space 26S. Any space can be used as long as it can flow.
　本実施形態においては、板状延出部２４にその両面側に開口する貫通孔２６が形成されており、この貫通孔２６によって、流通空間２６Ｓが形成されている。 In the present embodiment, the plate-like extension portion 24 is formed with through holes 26 that are open on both sides thereof, and a through space 26S is formed by the through holes 26.
　より具体的には、貫通孔２６は、板状延出部２４のうち、板状延出部２４の長手方向において第１被覆部１７と重なる部分であって、板状延出部２４の幅方向中央部に形成されている。 More specifically, the through hole 26 is a portion of the plate-like extension portion 24 that overlaps the first covering portion 17 in the longitudinal direction of the plate-like extension portion 24, and the width of the plate-like extension portion 24. It is formed at the center of the direction.
　貫通孔２６の形状は特に限定されず、丸孔であってもよいし、楕円丸孔であってもよいし、多角形孔（三角形孔、四角形孔）形状であってもよい。図４では、貫通孔２６が丸孔形状である場合が例示されている。 The shape of the through hole 26 is not particularly limited, and may be a round hole, an elliptical round hole, or a polygonal hole (triangular hole, square hole) shape. FIG. 4 illustrates a case where the through hole 26 has a round hole shape.
　貫通孔２６は、板状延出部２４と第１被覆部１７との接触幅Ｗ２よりも大きい幅Ｗ１に形成されている。 The through hole 26 is formed to have a width W1 larger than the contact width W2 between the plate-like extension part 24 and the first covering part 17.
　すなわち、上記したように、電線接続部２２の一方主面に中間露出部１４が超音波接合されている。この場合、中間露出部１４は、電線接続部２２の一方主面に強く押付けられた状態で、両者に対して超音波振動が付与される。このため、第１被覆部１７のうち中間露出部１４に近い部分が板状延出部２４の一方主面にある程度押し当てられるように接近した状態になる。また、電線１２の絶縁被覆１６は、完全な剛体では無く、板状延出部２４の一方主面に接触してある程度変形し得る場合がある。このため、第１被覆部１７と板状延出部２４とは、線接触ではなく、板状延出部２４の幅方向に多少広がった帯状の面接触領域Ｒで面接触し得る（図２及び図３参照）。 That is, as described above, the intermediate exposed portion 14 is ultrasonically bonded to one main surface of the wire connecting portion 22. In this case, the intermediate exposed portion 14 is strongly pressed against one main surface of the wire connecting portion 22, and ultrasonic vibration is applied to both. For this reason, it will be in the state which approached so that the part close | similar to the intermediate | middle exposed part 14 among the 1st coating | coated parts 17 might be pressed to the one main surface of the plate-shaped extension part 24 to some extent. Further, the insulating coating 16 of the electric wire 12 is not a complete rigid body, and may be deformed to some extent by contacting one main surface of the plate-like extension portion 24. For this reason, the 1st coating | coated part 17 and the plate-shaped extension part 24 can carry out surface contact in the strip | belt-shaped surface contact area | region R which spread a little in the width direction of the plate-shaped extension part 24 instead of line contact (FIG. 2). And FIG. 3).
　貫通孔２６の幅Ｗ１（板状延出部２４の幅方向における寸法）が、上記面接触領域Ｒの幅（接触幅）Ｗ２よりも小さいと、貫通孔２６が第１被覆部１７によって塞がれる可能性がある。そこで、貫通孔２６の幅Ｗ１が、板状延出部２４と第１被覆部１７との接触幅Ｗ２よりも大きく形成されていると、貫通孔２６は、第１被覆部１７と板状延出部２４との面接触領域Ｒからはみ出る。これにより、接着剤５０が、貫通孔２６内の流通空間２６Ｓを通って、板状延出部２４の両面間で流動し易くなる。貫通孔２６の幅Ｗ１は、例えば、４ｍｍ以上であるとよく、より好ましくは、５ｍｍ以上であるとよい。 If the width W1 of the through hole 26 (the dimension in the width direction of the plate-like extension portion 24) is smaller than the width (contact width) W2 of the surface contact region R, the through hole 26 is blocked by the first covering portion 17. There is a possibility. Therefore, when the width W1 of the through hole 26 is formed to be larger than the contact width W2 between the plate-like extension portion 24 and the first covering portion 17, the through-hole 26 extends from the first covering portion 17 to the plate-like extension. It protrudes from the surface contact region R with the protruding portion 24. Thereby, the adhesive 50 easily flows between both surfaces of the plate-like extension part 24 through the circulation space 26 </ b> S in the through hole 26. The width W1 of the through hole 26 is, for example, preferably 4 mm or more, and more preferably 5 mm or more.
　また、貫通孔２６は、板状延出部２４と第１被覆部１７との接触部分である面接触領域Ｒの両側で開口していてもよい。 Further, the through hole 26 may be opened on both sides of the surface contact region R which is a contact portion between the plate-like extension part 24 and the first covering part 17.
　本実施形態においては、貫通孔２６が板状延出部２４の幅方向中央部に形成されている。また、貫通孔２６の幅Ｗ１が、上記面接触領域Ｒの幅（接触幅）Ｗ２よりも大きい。さらに、中間露出部１４が電線接続部２２幅方向中央部に位置するように電線接続部２２と接続されており、第１被覆部１７が板状延出部２４の幅方向中央ラインに沿って、板状延出部２４側に延出している。このため、板状延出部２４と第１被覆部１７との面接触領域Ｒが、板状延出部２４の一方主面の幅方向中央ラインに沿って延在しており、貫通孔２６のうち板状延出部２４の幅方向両側部分が、面接触領域Ｒの両側で開口している。このため、流動状態にある接着剤５０は、面接触領域Ｒの両側で、貫通孔２６を通って、板状延出部２４の両面間で流動し易い。 In the present embodiment, the through hole 26 is formed in the center in the width direction of the plate-like extension portion 24. Further, the width W1 of the through hole 26 is larger than the width (contact width) W2 of the surface contact region R. Further, the intermediate exposed portion 14 is connected to the electric wire connecting portion 22 so that the intermediate exposed portion 14 is located in the central portion in the width direction of the electric wire connecting portion 22, and the first covering portion 17 extends along the central line in the width direction of the plate-like extension portion 24. It extends to the plate-like extension part 24 side. For this reason, the surface contact region R between the plate-like extension portion 24 and the first covering portion 17 extends along the center line in the width direction of the one main surface of the plate-like extension portion 24, and the through hole 26. Among them, both side portions in the width direction of the plate-like extending portion 24 are opened on both sides of the surface contact region R. For this reason, the adhesive 50 in a fluid state easily flows between both surfaces of the plate-like extension portion 24 through the through holes 26 on both sides of the surface contact region R.
　仮に、貫通孔が面接触領域の一方側でのみ開口していると、流動状態にある接着剤は、貫通孔が面接触領域Ｒの一方側では、板状延出部２４の両面間で流動し易いのに対して、面接触領域Ｒの他方側では、板状延出部２４の両面間で流動し難く、板状延出部２４と第１被覆部１７との間のすき間を埋め難い。 If the through hole is opened only on one side of the surface contact region, the adhesive in a fluid state flows between both surfaces of the plate-like extension portion 24 on the one side of the surface contact region R. In contrast, on the other side of the surface contact region R, it is difficult to flow between both surfaces of the plate-like extension portion 24, and it is difficult to fill a gap between the plate-like extension portion 24 and the first covering portion 17. .
　熱収縮チューブ４０は、熱収縮した状態で、電線接続部２２と中間露出部１４との接続部分から板状延出部２４のうち流通空間２６Ｓに至るまでの領域を少なくとも覆う。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、ここでは、熱収縮チューブ４０の他端部は、板状延出部２４のうち流通空間２６Ｓ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、流通空間２６Ｓ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 at least the region from the connecting portion between the wire connecting portion 22 and the intermediate exposed portion 14 to the distribution space 26S in the plate-like extending portion 24 in a heat-shrinked state. Here, one end portion of the heat shrinkable tube 40 covers the second covering portion 18. In particular, here, one end portion 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 portion of the heat shrinkable tube 40 is heat-shrinked into a shape along the outer shape of the second covering portion 18, and the gap between the heat-shrinkable tube 40 and the second covering portion 18 is filled with the adhesive 50. It has become easier. Here, the other end of the heat-shrinkable tube 40 covers the front end side of the plate-like extension part 24 rather than the part where the flow space 26S is formed. In particular, the other end portion of the heat-shrinkable tube 40 covers a position in the vicinity of the counterpart connection portion 32 here. By forming the flow space 26 </ b> S at the other end portion of the heat shrinkable tube 40, the gap between the heat shrinkable tube 40, the first covering portion 17, and the terminal 20 can be easily filled.
　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 a tubular member formed of a synthetic resin such as a polyolefin resin or a nylon resin, for example. The heat-shrinkable tube 40B before shrinkage is obtained by cooling a resin member formed into a thin tubular shape by extrusion molding after being stretched to a thick tubular shape in a heated state. The heat-shrinkable tube 40B thus obtained has a shape memory characteristic that, when heated, shrinks to a thin tubular shape before being stretched. The heat-shrinkable tube 40 in the electric wire 10 with a heat-shrinkable tube is in a heat-shrinked state, and in the process of transitioning from a thick tube to a thin tube by heat-shrinking, the connection portion between the terminal 20 and the wire 12 to be covered is covered. The shape is deformed along the outer shape.
　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 stops the inner region of the heat shrinkable tube 40. As the adhesive 50, for example, a polyamide-based thermoplastic hot melt adhesive or the like is used. However, the adhesive 50 is not limited to the above, and a polyolefin-based thermoplastic hot melt adhesive 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を埋めるように流動する。流動した接着剤５０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。 For example, the adhesive 50B may be provided in advance on the inner peripheral surface of the heat-shrinkable tube 40B before shrinkage, may be provided on the electric wire 12 side with the terminal 20, or may be both. Then, the adhesive 50 </ b> B becomes a flowable state by being heated together with the heat for shrinking the heat shrinkable tube 40, and flows so as to fill a gap in the inner region with the heat shrinkage of the heat shrinkable tube 40. . The fluidized adhesive 50 is maintained in a state in which gaps in the inner region of the heat-shrinkable tube 40 are filled by being cooled and solidified, and becomes an adhesive 50 that stops 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 contraction tube is manufactured. In FIG. 6, only the heat-shrinkable tube 40B with the adhesive 50B is shown 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、流通空間２６Ｓ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にプレス孔開け、切削孔開け加工等することによって、流通空間２６Ｓを形成するための貫通孔２６を形成することができる。 In manufacturing the electric wire 10 with a heat-shrinkable tube, first, the electric wire 12 having the intermediate exposed portion 14 where the core wire 13 is exposed in the intermediate portion and the terminal 20 in which the distribution space 26S is formed are prepared. For example, the electric wire 12 can be formed by peeling the middle part of the uniformly covered electric wire. Moreover, the through-hole 26 for forming the distribution | circulation space 26S can be formed by carrying out the press hole drilling, the cutting hole drilling process, etc. in a part of board | plate 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 exposed portion 14. Here, the intermediate | middle exposure part 14 and the electric wire connection part 22 are welded with the ultrasonic welding apparatus abbreviate | omitting illustration, for example. Further, when the terminal 20 has the covering crimping part 36, the covering crimping part 36 is crimped to the second covering part 18 using a crimping device (not shown). Either the welding of the intermediate exposed portion 14 and the wire connecting portion 22 or the crimping of the covering crimp 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の一端部を相手側接続部３２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 40B is put on the connection portion between the terminal 20 and the electric wire 12. Here, a heat-shrinkable tube 40B with an adhesive 50B in which an adhesive 50B is applied in advance to the inner surface of the heat-shrinkable tube 40B before shrinkage is used. In covering the heat-shrinkable tube 40B over the connection portion between the terminal 20 and the electric wire 12, the heat-shrinkable tube 40B can be easily positioned by, for example, abutting one end of the heat-shrinkable tube 40B against the mating connection portion 32.
　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 placed on the connection portion between the terminal 20 and the electric wire 12 is heated and contracted 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 be in a fluid state. As the heat-shrinkable tube 40B thermally shrinks and the adhesive 50B flows, the gaps between the heat-shrinkable tube 40, the electric wires 12 and the terminals 20 are filled with the adhesive 50.
　この際、熱収縮チューブ４０Ｂが熱収縮すると、板状延出部２４の両縁が熱収縮チューブ４０の内周面に近づく、或は、接触しようとする。すると、熱収縮チューブ４０内の接着剤５０のうち板状延出部２４の他方主面（第１被覆部１７の反対側の面）側に存在するものが、板状延出部２４によってせき止められてしまう。しかしながら、本実施形態においては、板状延出部２４に貫通孔２６による流通空間２６Ｓが形成されている。このため、熱収縮チューブ４０内の接着剤５０のうち板状延出部２４の他方主面（第１被覆部１７の反対側の面）側に存在するものが、流通空間２６Ｓを通って、板状延出部２４の一方主面と第１被覆部１７との間の空間に流動し易くなる。これにより、図２に示されるように板状延出部２４と第１被覆部１７との間のすき間に接着剤５０が充填され易い。 At this time, when the heat-shrinkable tube 40B is heat-shrinked, both edges of the plate-like extension portion 24 approach or contact the inner peripheral surface of the heat-shrinkable tube 40. Then, the adhesive 50 in the heat-shrinkable tube 40 that is present on the other main surface (surface opposite to the first covering portion 17) side of the plate-like extension portion 24 is blocked by the plate-like extension portion 24. It will be. However, in the present embodiment, a circulation space 26 </ b> S formed by the through hole 26 is formed in the plate-like extension portion 24. For this reason, what exists in the other main surface (surface opposite to the 1st coating | coated part 17) side of the plate-shaped extension part 24 among the adhesive agents 50 in the heat-shrinkable tube 40 passes through the distribution space 26S. It becomes easy to flow into the space between the one main surface of the plate-like extension part 24 and the first covering part 17. Thereby, as shown in FIG. 2, the adhesive 50 is easily filled in the gap between the plate-like extension part 24 and the first covering part 17.
　＜効果等＞
　以上のように構成された熱収縮チューブ付電線１０によると、熱収縮チューブ４０内の接着剤５０は、板状延出部２４に形成された流通空間２６Ｓを通って、端子２０の板状延出部２４と電線との間に行き渡ってそれらの間の隙間を埋め易い。このため、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 electric wire 10 with a heat-shrinkable tube configured as described above, the adhesive 50 in the heat-shrinkable tube 40 passes through the distribution space 26 </ b> S formed in the plate-like extending portion 24 and extends in the plate-like shape of the terminal 20. It is easy to spread between the outlet 24 and the electric wire and fill the gap between them. For this reason, 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 satisfactorily prevented.
　また、例えば、芯線１３の断面積が１５ｍｍ２以上であると、電線１２が太くなって、第１被覆部１７と板状延出部２４との面接触領域Ｒの幅が大きくなり、それらの間に接着剤５０が行き渡りにくい。このような場合に、板状延出部２４にその両面側に開口する流通空間２６Ｓが形成されていると、熱収縮チューブ４０内の接着剤５０が、板状延出部２４に形成された流通空間２６Ｓを通って、端子２０の板状延出部２４と電線１２との隙間に行き渡り易くなり、有効である。 Further, for example, when the cross-sectional area of the core wire 13 is 15 mm 2 or more, the electric wire 12 becomes thick, and the width of the surface contact region R between the first covering portion 17 and the plate-like extension portion 24 becomes large. It is difficult for the adhesive 50 to spread between them. In such a case, the adhesive agent 50 in the heat-shrinkable tube 40 is formed in the plate-like extension portion 24 when the plate-like extension portion 24 is formed with the flow space 26S opening on both sides thereof. It is effective because it easily reaches the gap between the plate-like extension 24 of the terminal 20 and the electric wire 12 through the distribution space 26S.
　また、例えば、中間露出部１４と電線接続部２２とが超音波接合されていると、板状延出部２４と第１被覆部１７とが近接してしまい、接着剤５０が、端子２０の板状延出部２４と第１被覆部１７との隙間に行き渡り難い。このような場合に、板状延出部２４にその両面側に開口する流通空間２６Ｓが形成されていると、熱収縮チューブ４０内の接着剤５０が、板状延出部２４に形成された流通空間２６Ｓを通って、板状延出部２４と第１被覆部１７との隙間に行き渡り易くなり、有効である。 Further, for example, when the intermediate exposed portion 14 and the wire connecting portion 22 are ultrasonically bonded, the plate-like extending portion 24 and the first covering portion 17 are close to each other, and the adhesive 50 is connected to the terminal 20. It is difficult to reach the gap between the plate-like extension part 24 and the first covering part 17. In such a case, the adhesive agent 50 in the heat-shrinkable tube 40 is formed in the plate-like extension portion 24 when the plate-like extension portion 24 is formed with the flow space 26S opening on both sides thereof. It is effective because it easily reaches the gap between the plate-like extension part 24 and the first covering part 17 through the circulation space 26S.
　また、例えば、板状延出部２４の幅が、第１被覆部１７の径以上であると、板状延出部２４の両縁が熱収縮した熱収縮チューブ４０の内面に近接し或は押し当てられた状態となり易い。すると、接着剤５０が、板状延出部２４の他方主面（中間露出部１４の反対側の面）と熱収縮チューブ４０との間の空間に溜り、板状延出部２４と第１被覆部１７との間に行き渡り難くなる。そこで、このような場合に、板状延出部２４に流通空間２６Ｓが形成されていると、熱収縮チューブ４０内の接着剤が、流通空間２６Ｓを通って、板状延出部２４と第１被覆部１７との隙間に行き渡り易くなり、有効である。 Further, for example, when the width of the plate-like extension portion 24 is equal to or larger than the diameter of the first covering portion 17, both edges of the plate-like extension portion 24 are close to the inner surface of the heat-shrinkable tube 40 that is thermally contracted or It tends to be in a pressed state. Then, the adhesive 50 accumulates in the space between the other main surface of the plate-like extension portion 24 (the surface opposite to the intermediate exposed portion 14) and the heat-shrinkable tube 40, and the plate-like extension portion 24 and the first It becomes difficult to spread between the covering portion 17. Therefore, in such a case, when the circulation space 26S is formed in the plate-like extension part 24, the adhesive in the heat shrinkable tube 40 passes through the circulation space 26S and the plate-like extension part 24 and the second extension part 24. It becomes easy to reach the gap with the 1 covering portion 17 and is effective.
　また、例えば、板状延出部２４の長手方向に沿った方向において、流通空間２６Ｓが、第１被覆部１７と重なる位置に形成されていると、流通空間２６Ｓを通った接着剤５０が、板状延出部２４と第１被覆部１７との間に直接的に流れ込むことができ、当該接着剤５０が板状延出部２４と第１被覆部１７との間に行き渡り易い。 Further, for example, when the circulation space 26S is formed at a position overlapping the first covering portion 17 in the direction along the longitudinal direction of the plate-like extension portion 24, the adhesive 50 that has passed through the circulation space 26S, It can flow directly between the plate-like extension part 24 and the first covering part 17, and the adhesive 50 can easily spread between the plate-like extension part 24 and the first covering part 17.
　流通空間２６Ｓが、板状延出部２４に形成された貫通孔２６内の空間として形成されていると、接着剤５０が流動する流通空間２６Ｓを確保し易く、接着剤５０が貫通孔２６内の流通空間２６Ｓを通って、板状延出部２４と第１被覆部１７との隙間に行き渡り易い。 When the circulation space 26S is formed as a space in the through hole 26 formed in the plate-like extension portion 24, it is easy to secure the circulation space 26S in which the adhesive 50 flows, and the adhesive 50 is in the through hole 26. It is easy to reach the gap between the plate-like extension part 24 and the first covering part 17 through the distribution space 26S.
　この場合、貫通孔２６の幅Ｗ１が、第１被覆部１７と板状延出部２４との面接触領域Ｒの幅（接触幅）Ｗ２より大きくなるように形成されていると、貫通孔２６が第１被覆部１７によって塞がれ難くなり、接着剤５０が、板状延出部２４に形成された貫通孔２６内の流通空間２６Ｓを通って、板状延出部２４と第１被覆部１７との隙間に行き渡り易い。 In this case, if the width W1 of the through hole 26 is formed to be larger than the width (contact width) W2 of the surface contact region R between the first covering portion 17 and the plate-like extension portion 24, the through hole 26 is formed. Is hard to be blocked by the first covering portion 17, and the adhesive 50 passes through the flow space 26 </ b> S in the through hole 26 formed in the plate-like extending portion 24 and the plate-like extending portion 24 and the first covering portion. It is easy to reach the gap with the part 17.
　また、貫通孔２６が、板状延出部２４と第１被覆部１７との面接触領域Ｒの両側で開口していると、接着剤５０が、板状延出部２４と第１被覆部１７との面接触領域Ｒの両側から、板状延出部２４と第１被覆部１７との隙間に行き渡り易くなり、それらの間を有効に埋め易い。 Further, when the through holes 26 are opened on both sides of the surface contact region R between the plate-like extension portion 24 and the first covering portion 17, the adhesive 50 is used for the plate-like extension portion 24 and the first covering portion. It becomes easy to reach the gap between the plate-like extension portion 24 and the first covering portion 17 from both sides of the surface contact region R with the 17, and it is easy to effectively fill the space between them.
　＜変形例＞
　第１実施形態を前提とする変形例について説明する。 <Modification>
A modification based on the first embodiment will be described.
　図７は第１変形例に係る熱収縮チューブ付電線１１０を示す断面図であり、図８は同変形例に係る端子１２０を示す斜視図である。 FIG. 7 is a cross-sectional view showing an electric wire 110 with a heat-shrinkable tube according to a first modification, and FIG. 8 is a perspective view showing a terminal 120 according to the modification.
　上記第１実施形態では、板状延出部２４に貫通孔２６が１つのみ形成されている例を説明した。この熱収縮チューブ付電線１１０では、貫通孔２６に対応する貫通孔１２６が複数（ここでは２つ）形成されている。この２つの貫通孔１２６によって２つの流通空間１２６Ｓが形成されている。 In the first embodiment, the example in which only one through hole 26 is formed in the plate-like extension portion 24 has been described. In the heat shrinkable tube-equipped electric wire 110, a plurality (two in this case) of through holes 126 corresponding to the through holes 26 are formed. Two flow spaces 126 </ b> S are formed by the two through holes 126.
　より具体的には、板状延出部２４に対応する板状延出部１２４の中央ラインの一側に１つの貫通孔１２６が形成され、中央ラインの他側にもう一つの貫通孔１２６が形成されている。２つの貫通孔１２６によって、２つの流通空間１２６Ｓが形成されている。２つの貫通孔１２６は、それぞれ板状延出部１２４の両面側に貫通している。貫通孔１２６の形状は特に限定されず、丸孔であってもよいし、楕円丸孔であってもよいし、多角形孔（三角形孔、四角形孔）形状であってもよい。図８では、貫通孔１２６が丸孔形状である場合が例示されている。 More specifically, one through-hole 126 is formed on one side of the center line of the plate-like extension part 124 corresponding to the plate-like extension part 24, and another through-hole 126 is formed on the other side of the center line. Is formed. Two flow spaces 126S are formed by the two through holes 126. The two through holes 126 penetrate the both sides of the plate-like extension part 124, respectively. The shape of the through hole 126 is not particularly limited, and may be a round hole, an elliptical round hole, or a polygonal hole (triangular hole, square hole) shape. FIG. 8 illustrates a case where the through hole 126 has a round hole shape.
　貫通孔１２６の幅は、板状延出部１２４と第１被覆部１７との接触幅である面接触領域Ｒの幅Ｗ２以下であってもよい。 The width of the through-hole 126 may be equal to or less than the width W2 of the surface contact region R that is the contact width between the plate-like extension part 124 and the first covering part 17.
　しかしながら、２つの貫通孔１２６のうちの一方の開口の少なくとも一部は、板状延出部１２４と第１被覆部１７との面接触領域Ｒを一方外側に越えて存在している。また、２つの貫通孔１２６のうちの他方の開口の少なくとも一部は、板状延出部１２４と第１被覆部１７との面接触領域Ｒを他方外側に越えて存在している。このため、２つの貫通孔１２６は、板状延出部１２４と第１被覆部１７との面接触領域Ｒの両側で開口している。ここでは、２つの貫通孔１２６の開口全体が、板状延出部１２４と第１被覆部１７との面接触領域Ｒの外側で開口している。 However, at least a part of one opening of the two through holes 126 exists beyond the surface contact region R between the plate-like extension part 124 and the first covering part 17 on the one outer side. Further, at least a part of the other opening of the two through-holes 126 exists beyond the surface contact region R between the plate-like extension part 124 and the first covering part 17 on the other outer side. For this reason, the two through holes 126 are opened on both sides of the surface contact region R between the plate-like extension portion 124 and the first covering portion 17. Here, the entire opening of the two through holes 126 is open outside the surface contact region R between the plate-like extension portion 124 and the first covering portion 17.
　この第１変形例に係る熱収縮チューブ付電線１１０によっても、熱収縮チューブ４０内の接着剤５０は、板状延出部１２４に形成された２つの貫通孔１２６によって形成された流通空間１２６Ｓを通って、端子１２０の板状延出部１２４と電線との間に行き渡ってそれらの間の隙間を埋め易い。このため、電線１２の中間部に端子１２０を接続する場合に、端子１２０と電線１２との接続部分を良好に防食できる。 Also with the electric wire 110 with a heat-shrinkable tube according to the first modification, the adhesive 50 in the heat-shrinkable tube 40 passes through the circulation space 126S formed by the two through holes 126 formed in the plate-like extension portion 124. It passes through between the plate-like extension part 124 of the terminal 120 and the electric wire and easily fills the gap between them. For this reason, when connecting the terminal 120 to the intermediate part of the electric wire 12, the connection part of the terminal 120 and the electric wire 12 can be satisfactorily prevented.
　また、接着剤５０が、板状延出部１２４と第１被覆部１７との面接触領域Ｒの両側の貫通孔１２６を通って、板状延出部１２４と第１被覆部１７との隙間に行き渡り易くなり、それらの間を有効に埋め易い。 Further, the adhesive 50 passes through the through holes 126 on both sides of the surface contact region R between the plate-like extension portion 124 and the first covering portion 17, and the gap between the plate-like extension portion 124 and the first covering portion 17. It's easy to get around and fill in between them effectively.
　その他、上記第１実施形態の場合と同様の作用効果を得ることができる。 In addition, the same operational effects as in the case of the first embodiment can be obtained.
　板状延出部に対して、貫通孔がより多数形成されていてもよい。例えば、複数の貫通孔が、板状延出部に対して水玉模様状に形成されていてもよい。また、板状延出部の両側部のそれぞれに、複数の貫通孔が間隔をあけて列をなすように形成されていてもよい。 More through holes may be formed in the plate-like extension portion. For example, a plurality of through holes may be formed in a polka dot pattern with respect to the plate-like extension part. Further, a plurality of through holes may be formed on both side portions of the plate-like extension portion so as to form a row at intervals.
　｛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２１０について説明する。図９は、第２実施形態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、図９のＸ－Ｘ線に沿って切断した横断面図である。図１１は、第２実施形態に係る端子２２０を示す斜視図である。なお、本実施の形態の説明において、第１実施形態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}
The electric wire 210 with a heat-shrinkable tube according to the second embodiment will be described. FIG. 9 is a side view showing the heat shrinkable tube-attached electric wire 210 according to the second embodiment. FIG. 10 is a cross-sectional view taken along line XX of FIG. FIG. 11 is a perspective view showing a terminal 220 according to the second embodiment. In the description of the present embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　第１実施形態では、流通空間２６Ｓが、貫通孔２６又は貫通孔１２６によって形成されている例を説明した。第２実施形態に係る熱収縮チューブ付電線２１０では、流通空間２２６Ｓが、少なくとも１つの凹部２２６によって形成されている例を説明する。 In the first embodiment, the example in which the circulation space 26S is formed by the through hole 26 or the through hole 126 has been described. In the electric wire 210 with heat-shrinkable tube 210 according to the second embodiment, an example in which the circulation space 226S is formed by at least one recess 226 will be described.
　より具体的には、板状延出部２４に対応する板状延出部２２４に凹部２２６が形成されている。ここでは、凹部２２６は複数（ここでは２つ）形成されている。凹部２２６は、板状延出部２２４の一方の側部に形成された第１凹部２２６ａと、他方の側部に形成された第２凹部２２６ｂとを含む。つまり、凹部２２６は、板状延出部２２４の両側部に形成されている。 More specifically, a concave portion 226 is formed in the plate-like extension portion 224 corresponding to the plate-like extension portion 24. Here, a plurality of (here, two) recesses 226 are formed. The recess 226 includes a first recess 226a formed on one side of the plate-like extension 224 and a second recess 226b formed on the other side. That is, the recess 226 is formed on both sides of the plate-like extension 224.
　上記第１凹部２２６ａ、第２凹部２２６ｂは、例えば、板状延出部２２４を構成する板材の両側部から回転切削工具等によって切込みを形成すること、打抜き型等で打抜き加工等することによって形成することができる。 The first recess 226a and the second recess 226b are formed by, for example, forming a cut with a rotary cutting tool or the like from both sides of a plate material constituting the plate-like extension portion 224, or punching with a punching die or the like. can do.
　第１凹部２２６ａは、板状延出部２２４の一方の側部から板状延出部２２４の幅方向中央に向けて凹む直線溝状に形成されている。第２凹部２２６ｂは、板状延出部２２４の他方の側部から板状延出部２２４の幅方向中央に向けて凹む直線溝状に形成されている。 The first recess 226a is formed in a linear groove shape that is recessed from one side of the plate-like extension portion 224 toward the center of the plate-like extension portion 224 in the width direction. The second recessed portion 226 b is formed in a linear groove shape that is recessed from the other side portion of the plate-like extension portion 224 toward the center in the width direction of the plate-like extension portion 224.
　図１０及び図１１では、第１凹部２２６ａ及び第２凹部２２６ｂは、板状延出部２２４の側部から、板状延出部２２４の幅方向に沿って、板状延出部２２４の幅方向中央に達するスリット状に形成されている。 In FIG. 10 and FIG. 11, the first recess 226 a and the second recess 226 b extend from the side of the plate extension 224 along the width direction of the plate extension 224. It is formed in a slit shape that reaches the center in the direction.
　また、第１凹部２２６ａ及び第２凹部２２６ｂは、板状延出部２２４の長手方向において互いにずれた位置に形成されている。ここでは、第１凹部２２６ａは、相手側接続部３２に近い位置に形成され、第２凹部２２６ｂは電線接続部２２に近い位置に形成されている。 The first recess 226a and the second recess 226b are formed at positions shifted from each other in the longitudinal direction of the plate-like extension 224. Here, the 1st recessed part 226a is formed in the position close | similar to the other party connection part 32, and the 2nd recessed part 226b is formed in the position close | similar to the electric wire connection part 22. FIG.
　板状延出部２２４のうち第１凹部２２６ａ及び第２凹部２２６ｂが形成された部分では、強度が弱くなる。上記のように、第１凹部２２６ａ及び第２凹部２２６ｂを、板状延出部２２４の長手方向において互いにずれた位置に形成することで、凹み形成箇所を板状延出部２２４の長手方向において分散させることができ、板状延出部２２４として望まれる強度を担保し易い。 In the portion of the plate-like extension 224 where the first recess 226a and the second recess 226b are formed, the strength is weakened. As described above, the first concave portion 226a and the second concave portion 226b are formed at positions shifted from each other in the longitudinal direction of the plate-like extending portion 224, so that the recess forming portion is located in the longitudinal direction of the plate-like extending portion 224. It can disperse | distribute and it is easy to ensure the intensity | strength desired as the plate-shaped extension part 224. FIG.
　第２実施形態に係る熱収縮チューブ付電線２１０によると、熱収縮チューブ４０が熱収縮して板状延出部２２４の両側部に接触した状態となっても、接着剤５０が、第１凹部２２６ａ、第２凹部２２６ｂ内の流通空間２２６Ｓを通って、板状延出部２２４と第１被覆部１７との隙間に行き渡り易い。このため、端子２２０と電線１２との接続部分を良好に防食できる。 According to the heat-shrinkable tube-equipped electric wire 210 according to the second embodiment, even when the heat-shrinkable tube 40 is heat-shrinked and comes into contact with both side portions of the plate-like extension portion 224, the adhesive 50 is in the first recess It is easy to reach the gap between the plate-like extension part 224 and the first covering part 17 through the circulation space 226S in the second recess part 226b. For this reason, the connection part of the terminal 220 and the electric wire 12 can be satisfactorily prevented.
　特に、板状延出部２２４の両側部に第１凹部２２６ａ、第２凹部２２６ｂが形成されているため、接着剤５０が両側の第１凹部２２６ａ、第２凹部２２６ｂ内の流通空間２２６Ｓを通って、板状延出部２２４と第１被覆部１７との接触部分にその両側から流れ込む。このため、接着剤５０が板状延出部２２４と第１被覆部１７との隙間を埋め易い。 In particular, since the first concave portion 226a and the second concave portion 226b are formed on both sides of the plate-like extension portion 224, the adhesive 50 passes through the flow space 226S in the first concave portion 226a and the second concave portion 226b on both sides. Then, it flows into the contact portion between the plate-like extension portion 224 and the first covering portion 17 from both sides thereof. For this reason, the adhesive 50 can easily fill the gap between the plate-like extension part 224 and the first covering part 17.
　また、第１凹部２２６ａ及び第２凹部２２６ｂが、板状延出部２２４の長手方向において互いにずれた位置に形成されているため、板状延出部２２４の強度をある程度確保できる。 In addition, since the first concave portion 226a and the second concave portion 226b are formed at positions shifted from each other in the longitudinal direction of the plate-like extension portion 224, the strength of the plate-like extension portion 224 can be ensured to some extent.
　その他、流通空間を孔によって形成すること、及び、これに起因する作用効果を除き、上記第１実施形態と同様の作用効果を得ることができる。 Other than that, the same operational effects as those of the first embodiment can be obtained except that the circulation space is formed by holes and the operational effects resulting therefrom.
　＜変形例＞
　第２実施形態を前提とする変形例について説明する。流通空間を形成する凹部の数、位置、形状例は、上記第２実施形態で説明したものに限られない。 <Modification>
A modification based on the second embodiment will be described. Examples of the number, position, and shape of the recesses that form the circulation space are not limited to those described in the second embodiment.
　図１２は第２変形例に係る端子３２０を示す斜視図である。 FIG. 12 is a perspective view showing a terminal 320 according to a second modification.
　この変形例に係る端子３２０では、流通空間３２６Ｓを形成する凹部３２６は。第１凹部３２６ａ及び第２凹部３２６ｂを含む。第１凹部２２６ａに対応する第１凹部３２６ａ、第２凹部２２６ｂに対応する第２凹部３２６ｂが、板状延出部２２４に対応する板状延出部３２４の長手方向において同じ位置に形成されている。 In the terminal 320 according to this modification, the recess 326 that forms the circulation space 326S is provided. A first recess 326a and a second recess 326b are included. A first recess 326a corresponding to the first recess 226a and a second recess 326b corresponding to the second recess 226b are formed at the same position in the longitudinal direction of the plate-like extension 324 corresponding to the plate-like extension 224. Yes.
　すなわち、第１凹部３２６ａは、板状延出部３２４の一方の側部から板状延出部３２４の幅方向中央部の手前迄の部分に至る細長い溝状に形成されている。第２凹部３２６ｂは、板状延出部３２４の他方の側部から板状延出部３２４の幅方向中央部の手前迄の部分に至る細長い溝状に形成されている。板状延出部３２４のうち相手側接続部３２側の部分と電線接続部２２側の部分とは、第１凹部３２６ａと第２凹部３２６ｂとの間の部分を介して繋がっている。 That is, the first concave portion 326 a is formed in a long and narrow groove shape extending from one side of the plate-like extension portion 324 to a portion before the center portion in the width direction of the plate-like extension portion 324. The second recess 326b is formed in an elongated groove shape extending from the other side portion of the plate-like extension portion 324 to a portion just before the central portion in the width direction of the plate-like extension portion 324. Of the plate-like extension part 324, the part on the counterpart connection part 32 side and the part on the wire connection part 22 side are connected via a part between the first recess 326a and the second recess 326b.
　熱収縮チューブ付電線が本変形例に係る端子３２０を含む構成である場合にも、接着剤５０が、第１凹部３２６ａ、第２凹部３２６ｂ内の流通空間３２６Ｓを通って、板状延出部３２４と第１被覆部１７との隙間に行き渡り易い。このため、端子３２０と電線１２との接続部分を良好に防食できる。 Even when the electric wire with a heat-shrinkable tube has a configuration including the terminal 320 according to this modification, the adhesive 50 passes through the flow space 326S in the first recess 326a and the second recess 326b, and extends in a plate shape. It is easy to reach the gap between 324 and the first covering portion 17. For this reason, the connection part of the terminal 320 and the electric wire 12 can be satisfactorily prevented.
　その他、第１凹部２２６ａ及び第２凹部２２６ｂを、板状延出部２２４の長手方向にずらして形成することによる作用効果を除き、上記第２実施形態と同様の作用効果を得ることができる。 In addition, the same operational effects as those of the second embodiment can be obtained except for the operational effects of shifting the first concave portion 226a and the second concave portion 226b in the longitudinal direction of the plate-like extending portion 224.
　流通空間を形成するための凹部の位置、数、形状例は上記第２実施形態及び第２変形例で説明したものに限られない。 The position, number, and shape examples of the recesses for forming the distribution space are not limited to those described in the second embodiment and the second modification.
　例えば、第２実施形態及び第２変形例において、半円状、三角形状、方形状、その他の多角形状の凹部が形成されてもよい。また、例えば、第２実施形態及び第２変形例において、直線溝状の凹部が板状延出部の幅方向に対して斜め方向に延在していてもよいし、曲った溝状の凹部が形成されてもよい。また、例えば、第２実施形態及び第２変形例において、板状延出部のそれぞれの側部に、複数の凹部が形成されてもよい。また、板状延出部の長手方向において、凹部が、板状延出部のうち中間露出部と重なる領域に形成されていてもよい。 For example, in the second embodiment and the second modification, a semicircular, triangular, square, or other polygonal recess may be formed. In addition, for example, in the second embodiment and the second modification, the linear groove-shaped concave portion may extend obliquely with respect to the width direction of the plate-like extension portion, or the curved groove-shaped concave portion. May be formed. Further, for example, in the second embodiment and the second modification, a plurality of concave portions may be formed on each side portion of the plate-like extension portion. Moreover, the recessed part may be formed in the area | region which overlaps with an intermediate | middle exposed part among plate-shaped extension parts in the longitudinal direction of a plate-shaped extension part.
　さらに、板状延出部の一方の側部のみに凹部が形成されていてもよい。この場合、凹部は、板状延出部の幅方向中央ラインを越えて形成されているとよく、板状延出部と第１被覆部との接触領域を越えて形成されていることが好ましい。 Furthermore, a recess may be formed only on one side of the plate-like extension. In this case, the concave portion may be formed beyond the center line in the width direction of the plate-like extension portion, and preferably formed beyond the contact area between the plate-like extension portion and the first covering portion. .
　｛変形例｝
　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合わせることができる。例えば、板状延出部に形成された流通空間は、貫通孔によって形成されたものと、凹部によって形成されたものとを含んでいてもよい。 {Modification}
In addition, each structure demonstrated by each said embodiment and each modification can be suitably combined unless it mutually contradicts. For example, the distribution space formed in the plate-like extension part may include one formed by a through hole and one formed by a recess.
　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。 Although the present invention has been described in detail as described above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.
　１０、１１０、２１０　　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、２２４、３２４　　板状延出部
　２６、１２６、２２６　　貫通孔
　２６Ｓ、１２６Ｓ、２２６Ｓ、３２６Ｓ　　流通空間
　３２　　相手側接続部
　４０　　熱収縮チューブ
　５０　　接着剤
　２２６ａ、３２６ａ　　第１凹部
　２２６ｂ、３２６ｂ　　第２凹部
　３２６　　凹部
　Ｒ　　　面接触領域 10, 110, 210 Electric wire with heat shrinkable tube 12 Electric wire 13 Core wire 14 Intermediate exposed portion 16 Insulation coating 17 First covering portion 18 Second covering portion 20, 120, 220, 320 Terminal 22 Electric wire connecting portion 24, 124, 224, 324 Plate- like extension part 26, 126, 226 Through hole 26S, 126S, 226S, 326S Distribution space 32 Mating side connection part 40 Heat shrinkable tube 50 Adhesive 226a, 326a First concave part 226b, 326b Second concave part 326 Concave part R Surface contact region

Claims (11)

  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板状延出部と、前記板状延出部に突設された相手側接続部とを含み、前記板状延出部にその両面側に開口する流通空間が形成された端子と、
    　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板状延出部のうち前記流通空間に至るまでの領域を少なくとも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 covering portion and a second covering portion covering the core wire with a space therebetween, wherein the core wire is exposed between the first covering portion and the second covering portion. An electric wire in which a part is formed;
    An electric wire connecting portion connected to the intermediate exposed portion, a plate-like extending portion extending from the electric wire connecting portion toward the first covering portion, and a counterpart connecting portion protruding from the plate-like extending portion A terminal in which a flow space that opens on both sides of the plate-like extension portion is formed, and
    A heat-shrinkable tube that is in a heat-shrinked state and covers at least a region from the connecting portion between the wire connecting portion and the intermediate exposed portion to the distribution space in the plate-like extension portion;
    An adhesive provided inside the heat-shrinkable tube to stop water inside the heat-shrinkable tube;
    An electric wire with a heat shrinkable tube.
  2. 　請求項１に記載の熱収縮チューブ付電線であって、
    　前記芯線の断面積が１５ｍｍ２以上である、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube of Claim 1,
    The electric wire with a heat contraction tube whose cross-sectional area of the said core wire is 15 mm < 2 > or more.
  3. 　請求項１又は請求項２に記載の熱収縮チューブ付電線であって、
    　前記中間露出部と前記電線接続部とが超音波接合されている、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube of Claim 1 or Claim 2,
    An electric wire with a heat-shrinkable tube, wherein the intermediate exposed portion and the electric wire connecting portion are ultrasonically bonded.
  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、
    　前記板状延出部の幅が、前記第１被覆部の径以上である、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube of any 1 paragraph of Claims 1-3,
    The electric wire with a heat-shrinkable tube, wherein the width of the plate-like extension part is equal to or larger than the diameter of the first covering part.
  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、
    　前記流通空間は、前記板状延出部の長手方向に沿った方向において、前記第１被覆部と重なる位置に形成されている、熱収縮チューブ付電線。     The electric wire with a heat-shrinkable tube according to any one of claims 1 to 4,
    The distribution space is an electric wire with a heat-shrinkable tube, which is formed at a position overlapping the first covering portion in a direction along the longitudinal direction of the plate-like extension 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、
    　前記流通空間は、前記板状延出部にその両面側に開口する貫通孔によって形成されたものを含む、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube of any 1 paragraph of Claims 1-5,
    The circulation space is an electric wire with a heat-shrinkable tube, including the plate-like extension portion formed by through-holes opened on both sides thereof.
  7. 　請求項６に記載の熱収縮チューブ付電線であって、
    　前記貫通孔は、前記板状延出部と前記第１被覆部との接触幅より大きい幅に形成されている、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube of Claim 6,
    The said through-hole is an electric wire with a heat contraction tube currently formed in the width | variety larger than the contact width of the said plate-shaped extension part and the said 1st coating | coated part.
  8. 　請求項６又は請求項７に記載の熱収縮チューブ付電線であって、
    　前記貫通孔は、前記板状延出部と前記第１被覆部との接触部分の両側で開口している、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube of Claim 6 or Claim 7,
    The said through-hole is an electric wire with a heat contraction tube currently opened on both sides of the contact part of the said plate-shaped extension part and the said 1st coating | coated part.
  9. 　請求項１から請求項８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、
    　前記流通空間は、前記板状延出部の両側部の少なくとも一方に形成された凹部によって形成されたものを含む、熱収縮チューブ付電線。     The electric wire with a heat-shrinkable tube according to any one of claims 1 to 8,
    The said distribution space is an electric wire with a heat contraction tube containing what was formed of the recessed part formed in at least one of the both sides of the said plate-shaped extension part.
  10. 　請求項９に記載の熱収縮チューブ付電線であって、
    　前記凹部は、前記板状延出部の両側部に形成されている、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube according to claim 9,
    The said recessed part is an electric wire with a heat-shrinkable tube formed in the both sides of the said plate-shaped extension part.
  11. 　請求項１０に記載の熱収縮チューブ付電線であって、
    　前記板状延出部の両側部に形成された複数の前記凹部は、前記板状延出部の長手方向において互いにずれた位置に形成されている、熱収縮チューブ付電線。     It is an electric wire with a heat contraction tube according to claim 10,
    The electric wire with a heat-shrinkable tube, wherein the plurality of concave portions formed on both side portions of the plate-like extension portion are formed at positions shifted from each other in the longitudinal direction of the plate-like extension portion.
PCT/JP2018/041369 2018-02-06 2018-11-07 Electric wire equipped with heat-shrinkable tube WO2019155705A1 (en)

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JP2018019275A JP2019139846A (en) 2018-02-06 2018-02-06 Electric wire with heat-shrinkable tube

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220176898A1 (en) * 2019-03-29 2022-06-09 Autonetworks Technologies, Ltd. Wiring module

Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS5083573U (en) * 1973-12-06 1975-07-17
JPH08251792A (en) * 1995-03-15 1996-09-27 Sumitomo Wiring Syst Ltd Electric wire connecting construction and method
JP2004050204A (en) * 2002-07-17 2004-02-19 Furukawa Electric Co Ltd:The Ultrasonic welding method and cable suitable for ultrasonic welding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083573U (en) * 1973-12-06 1975-07-17
JPH08251792A (en) * 1995-03-15 1996-09-27 Sumitomo Wiring Syst Ltd Electric wire connecting construction and method
JP2004050204A (en) * 2002-07-17 2004-02-19 Furukawa Electric Co Ltd:The Ultrasonic welding method and cable suitable for ultrasonic welding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220176898A1 (en) * 2019-03-29 2022-06-09 Autonetworks Technologies, Ltd. Wiring module
US11878640B2 (en) * 2019-03-29 2024-01-23 Autonetworks Technologies, Ltd. Wiring module

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