WO2012032906A1 - Connector, cable with terminal, and terminal - Google Patents

Connector, cable with terminal, and terminal Download PDF

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Publication number
WO2012032906A1
WO2012032906A1 PCT/JP2011/068590 JP2011068590W WO2012032906A1 WO 2012032906 A1 WO2012032906 A1 WO 2012032906A1 JP 2011068590 W JP2011068590 W JP 2011068590W WO 2012032906 A1 WO2012032906 A1 WO 2012032906A1
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WO
WIPO (PCT)
Prior art keywords
wire
coating
terminal
water
core wire
Prior art date
Application number
PCT/JP2011/068590
Other languages
French (fr)
Japanese (ja)
Inventor
純一 小野
宏樹 平井
拓次 大塚
琢也 猪上
正明 田端
丈博 中田
悟史 森川
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 WO2012032906A1 publication Critical patent/WO2012032906A1/en

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    • 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
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H01R4/203—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve having an uneven wire-receiving surface to improve the contact

Definitions

  • the present invention relates to a connector, an electric wire with a terminal, and a terminal.
  • This electric wire with a terminal includes an electric wire formed by coating the outer periphery of a core wire with an insulating coating, and a terminal connected to the core wire exposed from the insulating coating.
  • Terminal includes a core wire flat substrate portion which is placed a wire barrel which is crimped to the core wire with protrudes from the substrate part.
  • a region from the substrate portion to the end portion of the insulating coating is covered with a heat shrinkable tube.
  • One end of the heat-shrinkable tube covers a core wire crimped by a wire barrel and the other end is in close contact with the insulating coating.
  • the substrate portion has a flat plate shape, there is a concern that a gap is formed between one end side of the heat shrinkable tube and the substrate portion. Then, there is a concern that water enters the heat-shrinkable tube from this gap and this water comes into contact with the core wire and the wire barrel. Then, we are anxious about generating troubles, such as the surface of a core wire or a wire barrel being oxidized.
  • the present invention was completed based on the above situation, and an object thereof is to provide a connector which is excellent in waterproof property, the wire with terminals, and the terminals.
  • the present invention is a connector in which a terminal is connected to an electric wire formed by coating an outer periphery of a core wire with an insulating coating, and the terminal is accommodated in the cavity of a housing in which a cavity is formed, and the terminal includes a conductive member A connecting portion to be connected; a wire barrel that is crimped to the core wire exposed from the end of the insulating coating; and a connecting portion that connects the connecting portion and the wire barrel.
  • a water stop wall formed by molding a synthetic resin is provided on the outer surface of the water stop wall and the outer surface of the end portion of the insulating coating so that the water stop wall and the end portion of the insulating coating are in close contact with each other.
  • a cylindrical water-stop coating covering the core wire is provided over the wire, and the wire lead-out portion drawn out on the side opposite to the water-stop wall in the electric wire is covered with the water-stop coating so that the floating Is regulated.
  • the present invention is a terminal-attached electric wire in which a terminal is connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating, and the terminal is connected to a conductive member; and A wire barrel that is crimped to the core wire exposed from the end of the insulation coating, and a connecting portion that connects the connecting portion and the wire barrel, and molding the synthetic resin to the connecting portion.
  • the water blocking wall is provided, and is in close contact with the outer surface of the water blocking wall and the outer surface of the end portion of the insulating coating to cover the core wire between the water blocking wall and the end portion of the insulating coating.
  • a tubular water-stop coating is provided, and the wire lead-out portion of the electric wire drawn out to the opposite side of the water-stop wall is covered with the water-stop coating, thereby restricting its play.
  • the present invention provides a terminal connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating, the terminal being connected to a conductive member, and the insulating coating.
  • a water stop formed by including a wire barrel that is crimped to the core wire exposed from the end, and a connecting portion that connects the connecting portion and the wire barrel, and molding the synthetic resin in the connecting portion.
  • a cylindrical wall is provided to cover the core wire between the water blocking wall and the end of the insulating coating in close contact with the outer surface of the water blocking wall and the outer surface of the end of the insulating coating.
  • a water coating is provided, and the wire drawing portion of the electric wire drawn out to the side opposite to the water blocking wall is covered with the water blocking coating, so that its floating is restricted.
  • the water-stop wall connecting portion is molded, it is possible to prevent the water from entering from between the connecting portion and the cut-off wall. Moreover, waterproofing coating since the close contact with the outer surface of the cut-off wall, it is suppressed that water enters from between the outer surface of the waterproofing coating and the cut-off wall. Thereby, since the area
  • the terminal since the insulation barrel for fixing the insulating coating to the terminal is not provided, the terminal can be reduced in size. However, if the insulation barrel is eliminated, the wire lead-out portion is easily bent with respect to the wire barrel, and the bending stress concentrates on the end of the wire lead-out portion on the wire barrel side, which may break the core wire. . In that respect, according to the present invention, since the movement of the wire drawing portion can be restricted by covering the wire drawing portion with the water blocking coating, the core wire can be prevented from breaking at the end of the wire drawing portion on the wire barrel side.
  • the waterproofness of the connector, the electric wire with terminal, and the terminal can be improved.
  • FIG. 1 is a side view showing an electric wire with terminal according to Embodiment 1 of the present invention.
  • FIG. 2 is a cutaway cross-sectional view showing a main part of the electric wire with terminal.
  • FIG. 3 is an enlarged cross-sectional view of a main part showing the groove.
  • FIG. 4 is a plan view showing a state where the bending process is completed.
  • FIG. 5 is a plan view showing a state where the molding process is completed.
  • FIG. 6 is a plan view showing a state where the crimping process is completed.
  • FIG. 7 is a plan view showing a state where the covering step is completed.
  • FIG. 8 is a cross-sectional view showing the internal structure of the connector according to Embodiment 1 of the present invention.
  • FIG. 9 is a plan view showing a terminal according to Embodiment 1 of the present invention.
  • FIG. 10 is a cross-sectional view showing the internal structure of the connector according to Embodiment 2 of the invention.
  • the connector 30 according to the present embodiment includes a synthetic resin housing 31 in which a plurality of cavities 32 are formed.
  • the cavity 32 is configured to open on both front and rear sides of the housing 31, and the terminal-attached electric wire 10 is accommodated in the cavity 32 from the rear end opening of the cavity 32.
  • the electric wire with terminal 10 includes an electric wire 11 and a female terminal 12 (an example of a terminal) connected to the electric wire 11.
  • the electric wire 11 includes a core wire 13 formed by twisting a plurality of fine metal wires and an insulating coating 14 made of a synthetic resin that covers the outer periphery of the core wire 13.
  • the core wire 13 is comprised from arbitrary metals as needed, such as copper, a copper alloy, aluminum, an aluminum alloy. In this embodiment, aluminum or an aluminum alloy is used.
  • the core wire 13 is exposed by peeling off the insulating coating 14.
  • the core wire 13 may be a single core wire.
  • the female terminal 12 is connected to the connecting tube portion 20 (an example of a connecting portion) connected to a mating terminal (not shown) and the core wire 13 exposed by peeling off the insulating coating 14 at the end of the electric wire 11. It comprises a wire barrel 16 to be crimped, and a connecting portion 19 and a groove-like connecting portion 19 that connects the wire barrel 16.
  • the connecting tube portion 20 has a rectangular tube portion having a rectangular tube shape, and an elastic contact piece 21 that elastically contacts the mating terminal is provided inside the rectangular tube portion.
  • the female terminal 12 has a bottom plate 15 that is common to the connecting cylinder portion 20, the connecting portion 19, and the wire barrel 16. On this bottom plate 15, the insulation coating 14 and the core wire 13 of the electric wire 11 are placed.
  • the female terminal 12 of this embodiment is not provided with an insulation barrel for fixing the insulating coating 14, and the rear end of the wire barrel 16 is the rear end of the female terminal 12.
  • a wire lead-out portion 23 is formed in which the core wire 13 is drawn backward by a predetermined length by removing the insulating coating 14.
  • the wire lead-out portion 23 is formed longer than usual, and the front-rear length of the wire lead-out portion 23 is substantially equal to the sum of the front-rear length of the connecting portion 19 and the front-rear length of the wire barrel 16.
  • the female terminal 12 is formed by pressing a metal plate material into a predetermined shape.
  • a metal which comprises the female terminal 12 arbitrary metals, such as copper and a copper alloy, can be employ
  • a plating layer (not shown) is formed on the surface of the metal plate.
  • a metal which comprises a plating layer arbitrary metals, such as tin and nickel, can be employ
  • a tin plating layer is formed on the surface of copper or a copper alloy.
  • the wire barrel 16 includes a bottom plate 15 and a pair of barrel pieces 17 and 17 that rise upward from both side edges of the bottom plate 15.
  • the wire barrel 16 is crimped to the core wire 13 by crimping the core wire 13 between the barrel pieces 17 and 17 and the bottom plate 15 in a state where the core wire 13 of the electric wire 11 is placed on the bottom plate 15. ing.
  • a plurality of recesses 18 are formed on the crimping surface of the wire barrel 16 that is crimped by both barrel pieces 17, that is, the surface that comes into contact with the core wire 13 along with the crimping.
  • the concave portion 18 has a substantially quadrangular shape, and specifically has a substantially parallelogram shape.
  • the pair of recesses 18 adjacent to each other in the direction in which the core wire 13 extends front-rear direction
  • the entire region in the direction orthogonal to the direction in which the core wire 13 extends width direction.
  • the core wire 13 can be crimped. Therefore, the fixing force between the core wire 13 and the wire barrel 16 can be improved.
  • the rims of the plurality of recesses 18 come into sliding contact with the surface of the core wire 13 along with the crimping, the rims of the recesses 18 contact the core wire 13 through the insulating oxide film formed on the surface of the core wire 13. Will do. Accordingly, the contact area between the mouth edge of the recess 18 and the core wire 13 is increased. As a result, the electrical resistance value between the female terminal 12 and the core wire 13 can be lowered.
  • the connecting portion 19 is formed of a bottom plate 15 and a pair of side plates that rise upward from both side edges of the bottom plate 15. Both side plates are connected to both barrel pieces 17 respectively.
  • a cross-sectional shape of the connection part 19 it is good also as a semicircle shape, for example, and can employ
  • the connecting portion 19 is formed by bending the surface of the bottom plate 15 on the side where the core wire 13 is placed into a concave shape.
  • the joint portion 19 is provided with a mold portion 22 (an example of a water blocking wall) formed by molding a synthetic resin.
  • a synthetic resin such as polyamide, polyester, polypropylene, or polyethylene may be used, or a thermosetting resin such as an epoxy resin may be used.
  • These synthetic resins can be used.
  • As for said synthetic resin only 1 type may be used and multiple types of synthetic resin may be mixed and used.
  • a polyamide-based thermoplastic resin is used.
  • the mold part 22 is formed so as to surround the outer periphery of the connecting part 19 over the entire circumference.
  • the connecting portion 19 is embedded in the mold portion 22.
  • the cross section of the mold part 22 is a horizontally long substantially square shape, and the corners of the four corners are rounded.
  • Heat shrink tube 24 As shown in FIG. 2, the region from the mold part 22 through the wire barrel 16 and the wire lead-out part 23 to the end part 25 of the insulating coating 14 is a cylindrical heat-shrinkable tube 24 (stopped) made of a synthetic resin material. An example of water coating).
  • an adhesive layer or an adhesive layer (not shown) is formed on the inner surface of the heat shrinkable tube 24.
  • the adhesive layer or the pressure-sensitive adhesive layer is heated and softened or melted to exhibit adhesiveness or tackiness.
  • the front-rear length of the heat shrinkable tube 24 is set longer than the front-rear length of the region from the rear end of the mold part 22 to the front end of the insulating coating 14.
  • the inner surface of the heat-shrinkable tube 24 is in close contact with the outer peripheral surface of the mold part 22 without a gap in a state where the heat-shrinkable tube 24 is heated and contracted. Further, the inner surface of the heat shrinkable tube 24 is in close contact with the outer peripheral surface of the end portion 25 of the insulating coating 14 without any gap.
  • the synthetic resin material constituting the mold portion 22 a material that exhibits adhesiveness by being softened or melted by heating may be used.
  • the mold part 22 in the process of heating the heat-shrinkable tube 24, the mold part 22 can be softened or melted to bond the inner surface of the heat-shrinkable tube 24 and the mold part 22.
  • the heat-shrinkable tube 24 in the heat-cured state has a hardness that can restrict the wire drawing portion 23 from floating with respect to the wire barrel 16. For this reason, before inserting the terminal-attached electric wire 10 into the cavity 32, the electric wire drawing portion 23 bends, whereby bending stress concentrates on the end 23A on the wire barrel 16 side of the electric wire drawing portion 23 and the core wire 13 is broken. The situation can be avoided in advance. That is, by setting the wire drawing portion 23 to be covered with the heat-shrinkable tube 24 in advance, the wire drawing portion 23 is difficult to bend, and breakage of the core wire 13 at the end 23A on the wire barrel 16 side can be restricted.
  • the large diameter portion 33 that covers the end portion 25 of the insulating coating 14 in the heat shrinkable tube 24 protrudes outside the cavity 32 by forming the wire drawing portion 23 longer. It is supposed to be in a state.
  • a small diameter portion 34 that covers the wire lead-out portion 23 in the heat shrinkable tube 24 is accommodated in the cavity 32.
  • the inner diameter of the cavity 32 is set to be approximately the same as or slightly larger than the outer diameter of the small-diameter portion 34 so that the small-diameter portion 34 can be accommodated. Is also set smaller.
  • the dimension of the partition 35 between the adjacent cavities 32 is set to such an extent that the adjacent large diameter part 33 does not interfere. As a result, the housing 31 is reduced in size.
  • the reason why the housing 31 can be reduced in size is that the size of the partition 35 between the cavities 32 can be reduced while the inner diameter of the cavities 32 is reduced.
  • the reason why the inner diameter of the cavity 32 can be reduced is that although the large-diameter portion 33 is formed to be slightly larger than the small-diameter portion 34, the large-diameter portion 33 is disposed outside the cavity 32, so This is because it can be set smaller than the outer diameter of the large-diameter portion 33.
  • the reason why the size of the partition wall 35 between the cavities 32 can be reduced is that the large-diameter portions 33 are arranged close enough not to interfere with each other.
  • the small diameter portion 34 is restricted from moving in the direction orthogonal to the direction in which the core wire 13 extends inside the cavity 32. .
  • the wire drawing portion 23 can be prevented from floating, and the core wire 13 is not broken at the end 23A of the wire drawing portion 23 on the wire barrel 16 side.
  • a carrier 26 having a strip shape and a plurality of terminal pieces 27 connected to the side edges of the carrier 26 are formed.
  • the carrier 26 is formed with feed holes 28 arranged at substantially equal intervals along the longitudinal direction.
  • a feed claw (not shown) provided in the processing machine is engaged with the feed hole 28.
  • a plurality of recesses 18 may be formed on the pressure-bonding surface of the wire barrel 16, or the recesses 18 may be formed in a process different from the punching process.
  • a bending process is performed on the terminal piece 27 on which the punching process has been performed.
  • the terminal piece 27 is bent in this bending step, the terminal piece 27 is formed longer in the direction in which the core wire 13 extends, and the connecting portion 19 and the connecting tube portion 20 are formed.
  • the mold part 22 is connected to the connecting part 19 of the terminal piece 27 while sequentially feeding the terminal piece 27.
  • Mold More specifically, first, a portion of the connecting portion 19 where the mold portion 22 is to be formed is sandwiched from above and below by a pair of molds (not shown). Next, a synthetic resin in a molten state is injected into a molding space formed inside the mold. After the synthetic resin is solidified in the mold, the pair of molds are opened, and the terminal piece 27 on which the mold part 22 is formed is detached from the mold. The above steps are sequentially executed on the plurality of terminal pieces 27 connected to the carrier 26 at substantially constant intervals.
  • a crimping process is performed on the terminal piece 27. More specifically, the insulation coating 14 is peeled off at the end of the electric wire 11 to expose the core wire 13, and the core wire 13 and the insulation coating 14 exposed from the electric wire 11 are placed on the bottom plate 15 of the terminal piece 27. . Thereafter, the two barrel pieces 17 are caulked from outside the core wire 13 by a mold (not shown). Thereby, the wire barrel 16 is pressure-bonded to the core wire 13.
  • a cutting process for cutting the terminal pieces 27 from the carrier 26 is performed simultaneously with the above-described crimping process.
  • each terminal piece 27 is cut from the carrier 26 to be the female terminal 12 connected to the electric wire 11.
  • the female terminal 12 connected to the electric wire 11 may be formed by crimping and connecting the electric wire 11 to the female terminal 12 cut from the carrier 26.
  • the covering process is executed.
  • it inserted through heat shrinkable tube 24 from the connecting tube portion 20 side, to cover the area from the molded part 22 up to the end 25 of the insulating coating 14.
  • the inner diameter of the heat-shrinkable tube 24 is larger than the outer shape of the connecting cylinder part 20 in the state before heating, it can be inserted from the connecting cylinder part 20 side relatively easily.
  • it is sufficient to through previous heat shrinkable tube 24 to advance the wire 11.
  • the heat-shrinkable tube 24 is shrunk by executing a heating process of heating with a heating device (not shown).
  • a heating device not shown
  • the inner surface of the heat shrinkable tube 24 is brought into close contact with the outer surface of the mold portion 22 and the outer surface of the end portion 25 of the insulating coating 14 without a gap.
  • the inner surface of the heat-shrinkable tube 24 is also in close contact with the outer surface of the wire lead-out portion 23, and the wire lead-out portion 23 is restricted from floating with respect to the wire barrel 16.
  • the terminal-attached electric wire 10 is completed.
  • the connecting tube portion 20 is heated in an upward direction so that even if the mold portion 22 is melted in the heating step, the synthetic resin constituting the mold portion 22 is contained in the connection tube portion 20. It is possible to suppress inflow into Thereby, the electrical connection reliability with the other party terminal in the connection cylinder part 20 can be improved.
  • the terminal-attached electric wire 10 is sequentially inserted into the cavity 32 from the rear, and the terminal-attached electric wire 10 is prevented from being detached by a lance (not shown) formed inside the cavity 32. Keep in state. Thus, when the terminal-attached electric wires 10 are inserted into all the cavities 32, the connector 30 is completed.
  • the mold part 22 since the mold part 22 is provided in the connection part 19, it can suppress that water permeates from the connection part 19 and water adheres to the core wire 13 and the wire barrel 16. Furthermore, since the outer peripheral surface of the mold part 22 is in close contact with the inner surface of the heat shrinkable tube 24 without any gap, it is possible to prevent water from entering between the mold part 22 and the heat shrinkable tube 24. Is done. Thereby, the region from the portion of the connecting portion 19 where the mold portion 22 is formed to the wire barrel 16, the wire lead-out portion 23, and further to the end portion 25 of the insulating coating 14 is stopped by the heat shrinkable tube 24. Therefore, it is possible to reliably suppress water from adhering to the core wire 13 and the wire barrel 16.
  • the metal constituting the core wire 13 is different from the metal constituting the female terminal 12, if water adheres to both the core wire 13 and the wire barrel 16, electrolytic corrosion occurs in the core wire 13 or the wire barrel 16. Is concerned. According to this embodiment, since the core wire 13 and the wire barrel 16 are reliably waterproofed by the heat-shrinkable tube 24, it is possible to suppress the core wire 13 or the wire barrel 16 from being melted by electrolytic corrosion.
  • the core wire 13 is made of aluminum or an aluminum alloy and the female terminal 12 is formed by forming a tin plating layer on the surface of copper or a copper alloy, aluminum having a relatively large ionization tendency or This is particularly effective because the core wire 13 made of an aluminum alloy may be dissolved by electrolytic corrosion.
  • the specific gravity of aluminum or aluminum alloy is relatively small, the electric wire 11 can be reduced in weight.
  • the female terminal 12 can be reduced in size, which can contribute to downsizing of the housing 31.
  • the large-diameter portion 33 is disposed outside the cavity 32, the inner diameter of the cavity 32 can be reduced, and the housing 31 can be reduced in size.
  • the large-diameter portions 33 are arranged close enough not to interfere with each other, the size of the partition 35 between the cavities 32 can be reduced, and the housing 31 can be further downsized.
  • the electric wire extraction part 23 is made hard to bend
  • FIG. the loose movement of the wire lead-out portion 23 is restricted, and it is possible to avoid the bending stress from concentrating on the end 23 ⁇ / b> A on the wire barrel 16 side in the wire lead-out portion 23. Therefore, it becomes easy to regulate the breakage of the core wire 13 at the end 23A on the wire barrel 16 side.
  • the small diameter portion 34 is covered over the entire circumference by the inner wall of the cavity 32, so that the electric wire drawing portion 23 is bent with respect to the wire barrel 16. There is no. Therefore, it is possible to prevent the bending stress from being concentrated on the end 23A on the wire barrel 16 side and the core wire 13 from being broken.
  • the water-stop coating is made of the heat shrinkable tube 24.
  • the inner diameter of the heat-shrinkable tube 24 is relatively large, so that it can be easily disposed on the outer periphery of the region.
  • the inner surface of the heat shrinkable tube 24 can be brought into close contact without a gap and the edge 25 of the mold portion 22 and the insulating coating 14.
  • the heat-shrinkable tube 24 as the water-stop coating, the work efficiency of the process of arranging the heat-shrinkable tube 24 on the outer periphery of the region from the mold part 22 to the end 25 of the insulating coating 14 is improved. be able to.
  • the adhesive layer or the adhesive layer is formed on the inner peripheral surface of the heat shrinkable tube 24, the inner surface of the heat shrinkable tube 24 and the mold portion are formed by performing a heating process for shrinking the heat shrinkable tube 24.
  • the outer surface of 22 can be brought into close contact with no gap, and the inner surface of the heat shrinkable tube 24 and the outer surface of the end portion 25 of the insulating coating 14 can be brought into close contact with each other without any gap.
  • heat shrinkage is performed on the outer periphery of the region from the mold part 22 to the end of the insulating coating 14.
  • the work efficiency of the step of arranging the tube 24 can be improved, and the adhesion between the heat shrinkable tube 24 and the end portion 25 of the mold portion 22 and the insulating coating 14 can be improved.
  • the mold part 22 is formed by continuously performing a molding process on the plurality of terminal pieces 27 connected to the carrier 26. As a result, the working efficiency of the molding process can be improved.
  • the cutting process is executed in the same process as the crimping process. Therefore, compared with the case where a cutting process and a crimping
  • Embodiment 2 of the present invention will be described with reference to the drawing of FIG.
  • the connector 40 of the present embodiment is obtained by changing the shapes of the wire lead-out portion 23 and the housing 31 of the first embodiment, and the configuration, operation, and effect common to those of the first embodiment are duplicated. Omitted.
  • the same reference numerals are used for the same configurations as those in the first embodiment.
  • a cavity 42 is formed in the housing 41 so as to open on both the front and rear sides.
  • the electric wire with terminal 44 of the present embodiment is configured to include an electric wire extraction portion 43 formed shorter than the electric wire extraction portion 23 of the first embodiment, and accordingly, the large diameter portion 33 is accommodated in the cavity 42. This is different from the first embodiment.
  • the inner diameter of the cavity 42 of the present embodiment is set to be substantially the same as or slightly larger than the outer diameter of the large diameter portion 33.
  • the large-diameter portion 33 is restricted from moving in the direction orthogonal to the direction in which the core wire 13 extends inside the cavity 32. Therefore, the core wire 13 even at the end portion 43B of becoming not insulating coating 14 side only the end portion 43A of the wire barrel 15 side of the wire lead-out portion 43 will not be broken.
  • an elastic tube having rubber elasticity is used as the water blocking coating.
  • the inner diameter of the elastic tube in the natural state is set to be smaller than the outer diameter of the mold portion 22 and the outer diameter of the insulating coating 14. Since the configuration other than the above is the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.
  • the covering step of covering the female terminal 12 with the elastic tube first, an area extending from the female terminal 12 side to the end 25 of the insulating coating 14 through the female terminal 12 with the diameter of the elastic tube expanded. To place. Thereafter, the elastic tube is returned and deformed. Then, the inner surface of the elastic tube is in close contact with the region from the mold part 22 to the end part 25 of the insulating coating 14. In addition, what is necessary is just to let an elastic tube pass ahead of the electric wire 11 beforehand, before performing a crimping
  • the terminal is the female terminal 12, but the terminal is not limited to this, and is a male terminal provided with a male tab that is further extended in the direction in which the core wire 13 extends from the connecting portion 19.
  • it may be a so-called LA terminal in which a disk-like connection portion is formed continuously with the connecting portion 19 and a through hole is formed in the connection portion.
  • the conductive member may be a counterpart electric wire, and the connecting portion may be a wire barrel in which a core wire of the counterpart electric wire is crimped and connected. That is, a splice terminal in which a pair of wire barrels are formed on both sides of the connecting portion 19 may be used, and a terminal having an arbitrary shape may be used as necessary.
  • the cross section of the mold part 22 has a substantially square shape, but is not limited thereto, and may be a circular shape, an elliptical shape, an oval shape, or a polygonal shape such as a triangular shape. It may be any shape as required.
  • waterproofing coating a waterproofing tape forming a sheet-like, may be configured to tape winding in the region of the mold portion 22 up to the end 25 of the insulating coating 14.
  • the mold part 22 was set as the structure formed before the process of crimping
  • the mold part 22 is the wire barrel 16 to the core wire 13. It is good also as a structure formed after crimping
  • the core wire 13 is made of aluminum or an aluminum alloy.
  • the present invention is not limited to this, and the core wire 13 may be made of copper or a copper alloy. It is good also as a structure formed.
  • a terminal is good also as a structure which consists of arbitrary metals as needed. .
  • the crimping process and the cutting process are performed in the same process, but the present invention is not limited thereto, and the cutting process may be performed after the crimping process is performed. After performing a cutting process, you may perform a crimping
  • the wire lead-out portion is accommodated in the cavity, according to the present invention, the wire lead-out portion may be disposed outside the cavity.
  • the portion covering the end portion 25 of the insulating coating 14 in the water-stop coating is a large-diameter portion. It is good also as a large diameter part of the outer diameter part.
  • the minimum outer diameter portion of the water blocking coating may be a small diameter portion.
  • the technology disclosed in the present specification is a connector in which a terminal is connected to an electric wire formed by coating an outer periphery of a core wire with an insulating coating, and the terminal is accommodated in the cavity of a housing in which a cavity is formed,
  • the terminal includes a connection portion connected to the conductive member, a wire barrel crimped to the core wire exposed from the end portion of the insulating coating, and a connecting portion connecting the connection portion and the wire barrel.
  • the water stop wall is formed by molding synthetic resin at the joint portion, and the water stop wall and the insulation coating are in close contact with the outer surface of the water stop wall and the outer surface of the end portion of the insulation coating.
  • a cylindrical water-stop coating covering the core wire is provided between the end of the wire, and the wire lead-out portion drawn out on the side opposite to the water-stop wall in the electric wire is connected to the water-stop coating. The movement is regulated by being covered. To have.
  • the technology disclosed in this specification is an electric wire with a terminal in which a terminal is connected to the core wire exposed from an electric wire formed by coating an outer periphery of the core wire with an insulating coating, and the terminal is connected to a conductive member.
  • a connecting portion a wire barrel that is crimped to the core wire exposed from the end of the insulating coating, and a connecting portion that connects the connecting portion and the wire barrel.
  • a water blocking wall formed by molding synthetic resin is provided, and is in close contact with the outer surface of the water blocking wall and the outer surface of the end of the insulating coating, between the water blocking wall and the end of the insulating coating.
  • a tubular water-stop coating covering the core wire is provided over the wire, and the wire lead-out portion drawn out to the opposite side of the water-stop wall in the electric wire is covered with the water-stop coating, so It is regulated.
  • the technology disclosed in this specification is a terminal connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating, and the terminal is connected to a conductive member.
  • a wire barrel that is crimped to the core wire exposed from the end of the insulation coating, and a connecting portion that connects the connecting portion and the wire barrel, and the connecting portion is made of synthetic resin.
  • a water blocking wall formed by molding is provided, and is in close contact with the outer surface of the water blocking wall and the outer surface of the end portion of the insulating coating, and extends between the water blocking wall and the end portion of the insulating coating.
  • a tubular waterproof coating that covers the core wire is provided, and the wire lead-out portion that is drawn out to the opposite side of the waterproof wall of the electric wire is covered with the waterproof coating so that the floating of the wire drawing portion is provided. Be regulated.
  • the water blocking wall is formed at the connecting portion, so that it is possible to prevent water from entering between the connecting portion and the water blocking wall.
  • waterproofing coating since the close contact with the outer surface of the cut-off wall, it is suppressed that water enters from between the outer surface of the waterproofing coating and the cut-off wall.
  • the area extending to the end of the insulating coating from the water-stop wall because it is waterproof by the water stop coating, can be suppressed water from adhering to the core wire and the wire barrel.
  • the terminal can be reduced in size.
  • the insulation barrel is eliminated, the wire lead-out portion is easily bent with respect to the wire barrel, and the bending stress concentrates on the end of the wire lead-out portion on the wire barrel side, which may break the core wire.
  • the looseness of the wire lead-out portion can be regulated by covering the wire lead-out portion with a water blocking coating, the core wire breaks at the end of the wire lead-out portion on the wire barrel side. Can be prevented.
  • the wire drawing portion may be further accommodated in the cavity so that its play is restricted.
  • the waterproof coating covering the wire lead-out portion is accommodated in the cavity, and the outer surface of the water-stop coating comes into contact with the inner wall of the cavity, thereby making it easy to regulate the looseness of the wire lead-out portion.
  • the outer diameter of the portion accommodated in the cavity in the water blocking coating may be set to be the same as the inner diameter of the cavity so that the loosening of the wire lead-out portion is restricted.
  • “same” means not only the case where the outer diameter of the water blocking coating is the same as the inner diameter of the cavity, but also the case where the outer diameter of the water blocking coating is slightly smaller than the inner diameter of the cavity.
  • the outer surface of the water blocking coating accommodated in the cavity is almost in contact with the inner wall of the cavity, thereby preventing the wire drawing portion from floating.
  • the outer diameter of the small-diameter portion that covers the wire lead-out portion in the waterproof coating is set to be the same as the inner diameter of the cavity, and the outer diameter of the large-diameter portion that covers the end of the insulating coating in the waterproof coating is the It is good also as a structure set larger than the outer diameter of a small diameter part, and the said large diameter part being arrange
  • “same” means not only the case where the outer diameter of the small diameter portion is the same as the inner diameter of the cavity, but also the case where the outer diameter of the small diameter portion is slightly smaller than the inner diameter of the cavity.
  • the inner diameter of the cavity can be reduced by extending the wire drawing portion and disposing the large diameter portion outside the cavity, and the housing can be downsized.
  • the partition between cavities can be made small by arrange
  • the outer diameter of the large-diameter portion that covers the end portion of the insulating coating in the waterproof coating may be set to be the same as the inner diameter of the cavity, and the large-diameter portion may be accommodated in the cavity.
  • “same” means not only the case where the outer diameter of the large diameter portion is the same as the inner diameter of the cavity, but also the case where the outer diameter of the large diameter portion is slightly smaller than the inner diameter of the cavity.
  • the large-diameter portion can be prevented from moving by accommodating the large-diameter portion in the cavity, the breakage of the core wire can be prevented even at the end portion of the insulating coating in the wire lead-out portion.
  • the water blocking wall is further formed so as to surround the entire outer periphery of the connecting portion.
  • the water blocking wall can be in close contact with the inner surface of the water blocking coating over the entire circumference, so that the waterproof property can be further improved.
  • the core wire is made of aluminum or an aluminum alloy.
  • Aluminum or aluminum alloy has a relatively small specific gravity, so the weight of the wire can be reduced. On the other hand, since aluminum or aluminum alloy has a relatively high ionization tendency, it easily dissolves when electrolytic corrosion occurs. According to the above aspect, since the core wire and the wire barrel are reliably waterstop by water stop coating, it is particularly effective when the core wire is made of aluminum or an aluminum alloy.
  • an adhesive layer or an adhesive layer is formed on the inner peripheral surface of the water blocking coating.
  • the inner peripheral surface of the waterproofing coating is brought into close contact without a gap and a region from the water-stop wall up to the end of the insulating coating.
  • the water blocking coating is a heat shrinkable tube.
  • the inner diameter of the heat-shrinkable tube is relatively large in the state before heating, it can be easily disposed on the outer periphery of the region. Thereafter, the inner surface of the heat-shrinkable tube can be brought into close contact with the water blocking wall and the end portion of the insulating coating by being shrunk by heating.
  • a heat-shrinkable tube as the water-stop coating, it is possible to improve the work efficiency of the step of arranging the heat-shrink tube on the outer periphery of the region from the water blocking wall to the end of the insulating coating.
  • the water blocking coating is an elastic tube having rubber elasticity.
  • this elastic tube is arrange
  • the elastic tube can be covered from the water blocking wall to the end portion of the insulating coating by a simple process.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The purpose of the present invention is to provide a connector having excellent waterproof characteristics, a cable with a terminal, and a terminal. The terminal (12) of a connector (30) of the present invention is provided with a connecting section (20), a wire barrel (16), and a connecting section (19). The connecting section (19) is provided with a water stop wall (22) formed by molding a synthetic resin. Furthermore, a cylindrical water stop film (24) that covers the core wire (13) of the cable (11) is provided between the water stop wall (22) and the insulating film (14) of the cable (11) by being adhered to the outer surface of the water stop wall (22) and the outer surface of the edge portion of the insulating film (14). Since the water stop wall (22) is formed on the connecting section (19) in such a manner, entry of water from between the connecting section (19) and the water stop wall (22) can be suppressed. Furthermore, since the water stop film (24) is adhered to the outer surface of the water stop wall (22), entry of water from between the water stop film (24) and the outer surface of the water stop wall (22) can be also suppressed.

Description

コネクタ、端子付き電線、および端子Connectors, wires with terminals, and terminals
　本発明は、コネクタ、端子付き電線、および端子に関する。 The present invention relates to a connector, an electric wire with a terminal, and a terminal.
　従来、端子付き電線として特許文献１に記載のものが知られている。この端子付き電線は、芯線の外周を絶縁被覆で被覆してなる電線と、絶縁被覆から露出する芯線に接続された端子と、を備える。端子は、芯線が載置された平板状の基板部と、この基板部から突出されると共に芯線に圧着されたワイヤーバレルと、を備える。 Conventionally, the thing of patent document 1 is known as an electric wire with a terminal. This electric wire with a terminal includes an electric wire formed by coating the outer periphery of a core wire with an insulating coating, and a terminal connected to the core wire exposed from the insulating coating. Terminal includes a core wire flat substrate portion which is placed a wire barrel which is crimped to the core wire with protrudes from the substrate part.
　基板部から絶縁被覆の端部に至る領域には、熱収縮チューブが被せられている。熱収縮チューブの一端側はワイヤーバレルで圧着された芯線を被覆していると共に他端側は絶縁被覆に密着している。
特開２０００－２８５９８３号公報 A region from the substrate portion to the end portion of the insulating coating is covered with a heat shrinkable tube. One end of the heat-shrinkable tube covers a core wire crimped by a wire barrel and the other end is in close contact with the insulating coating.
JP 2000-259883 A
　しかしながら上記の構成によると、基板部は平板状をなしているので、熱収縮チューブの一端側と、基板部との間に隙間が形成されることが懸念される。すると、この隙間から水が熱収縮チューブ内に浸入し、この水が芯線及びワイヤーバレルと接触することが懸念される。すると、芯線又はワイヤーバレルの表面が酸化される等の不具合が発生することが懸念される。 However, according to the above configuration, since the substrate portion has a flat plate shape, there is a concern that a gap is formed between one end side of the heat shrinkable tube and the substrate portion. Then, there is a concern that water enters the heat-shrinkable tube from this gap and this water comes into contact with the core wire and the wire barrel. Then, we are anxious about generating troubles, such as the surface of a core wire or a wire barrel being oxidized.
　本発明は上記のような事情に基づいて完成されたものであって、防水性に優れたコネクタ、端子付き電線、および端子を提供することを目的とする。 The present invention was completed based on the above situation, and an object thereof is to provide a connector which is excellent in waterproof property, the wire with terminals, and the terminals.
　本発明は、芯線の外周を絶縁被覆で被覆してなる電線に端子が接続され、キャビティが形成されたハウジングの前記キャビティに前記端子が収容されたコネクタであって、前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、この止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられており、前記電線における前記止水壁とは反対側に引き出された電線引出部は、前記止水被覆に覆われることでその遊動が規制されている。 The present invention is a connector in which a terminal is connected to an electric wire formed by coating an outer periphery of a core wire with an insulating coating, and the terminal is accommodated in the cavity of a housing in which a cavity is formed, and the terminal includes a conductive member A connecting portion to be connected; a wire barrel that is crimped to the core wire exposed from the end of the insulating coating; and a connecting portion that connects the connecting portion and the wire barrel. A water stop wall formed by molding a synthetic resin is provided on the outer surface of the water stop wall and the outer surface of the end portion of the insulating coating so that the water stop wall and the end portion of the insulating coating are in close contact with each other. A cylindrical water-stop coating covering the core wire is provided over the wire, and the wire lead-out portion drawn out on the side opposite to the water-stop wall in the electric wire is covered with the water-stop coating so that the floating Is regulated.
　また、本発明は、芯線の外周を絶縁被覆で被覆してなる電線から露出した前記芯線に端子が接続された端子付き電線であって、前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、この止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられており、前記電線における前記止水壁とは反対側に引き出された電線引出部は、前記止水被覆に覆われることでその遊動が規制されている。 Further, the present invention is a terminal-attached electric wire in which a terminal is connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating, and the terminal is connected to a conductive member; and A wire barrel that is crimped to the core wire exposed from the end of the insulation coating, and a connecting portion that connects the connecting portion and the wire barrel, and molding the synthetic resin to the connecting portion. The water blocking wall is provided, and is in close contact with the outer surface of the water blocking wall and the outer surface of the end portion of the insulating coating to cover the core wire between the water blocking wall and the end portion of the insulating coating. A tubular water-stop coating is provided, and the wire lead-out portion of the electric wire drawn out to the opposite side of the water-stop wall is covered with the water-stop coating, thereby restricting its play.
　また、本発明は、芯線の外周を絶縁被覆で被覆してなる電線から露出する前記芯線に接続される端子であって、前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、この止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられるようになっており、前記電線における前記止水壁とは反対側に引き出された電線引出部は、前記止水被覆に覆われることでその遊動が規制される。 Further, the present invention provides a terminal connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating, the terminal being connected to a conductive member, and the insulating coating. A water stop formed by including a wire barrel that is crimped to the core wire exposed from the end, and a connecting portion that connects the connecting portion and the wire barrel, and molding the synthetic resin in the connecting portion. A cylindrical wall is provided to cover the core wire between the water blocking wall and the end of the insulating coating in close contact with the outer surface of the water blocking wall and the outer surface of the end of the insulating coating. A water coating is provided, and the wire drawing portion of the electric wire drawn out to the side opposite to the water blocking wall is covered with the water blocking coating, so that its floating is restricted.
　本発明によれば、繋ぎ部に止水壁が成形されているので、繋ぎ部と止水壁との間から水が浸入することを抑制できる。更に、止水被覆は止水壁の外面と密着しているので、止水被覆と止水壁の外面との間から水が浸入することも抑制される。これにより、止水壁から絶縁被覆の端部に至る領域は、止水被覆によって防水されるので、芯線及びワイヤーバレルに水が付着することを抑制できる。 According to the present invention, since the water-stop wall connecting portion is molded, it is possible to prevent the water from entering from between the connecting portion and the cut-off wall. Moreover, waterproofing coating since the close contact with the outer surface of the cut-off wall, it is suppressed that water enters from between the outer surface of the waterproofing coating and the cut-off wall. Thereby, since the area | region from the water stop wall to the edge part of insulation coating is waterproofed by water stop coating, it can suppress that water adheres to a core wire and a wire barrel.
　また、本発明では絶縁被覆を端子に固着するインシュレーションバレルが設けられていないため、端子を小型化できる。しかしながら、インシュレーションバレルをなくしてしまうと、電線引出部がワイヤーバレルに対して曲がりやすくなり、曲げ応力が電線引出部におけるワイヤーバレル側の端部に集中することにより、芯線が破断するおそれがある。その点、本発明によれば、電線引出部を止水被覆で覆うことにより電線引出部の遊動を規制できるため、電線引出部におけるワイヤーバレル側の端部において芯線の破断を防ぐことができる。 In the present invention, since the insulation barrel for fixing the insulating coating to the terminal is not provided, the terminal can be reduced in size. However, if the insulation barrel is eliminated, the wire lead-out portion is easily bent with respect to the wire barrel, and the bending stress concentrates on the end of the wire lead-out portion on the wire barrel side, which may break the core wire. . In that respect, according to the present invention, since the movement of the wire drawing portion can be restricted by covering the wire drawing portion with the water blocking coating, the core wire can be prevented from breaking at the end of the wire drawing portion on the wire barrel side.
　このように本発明によれば、コネクタ、端子付き電線、および端子の防水性を向上させることができる。 Thus, according to the present invention, the waterproofness of the connector, the electric wire with terminal, and the terminal can be improved.
図１は本発明の実施形態１に係る端子付き電線を示す側面図である。FIG. 1 is a side view showing an electric wire with terminal according to Embodiment 1 of the present invention. 図２は端子付き電線を示す要部切欠断面図である。FIG. 2 is a cutaway cross-sectional view showing a main part of the electric wire with terminal. 図３は溝部を示す要部拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a main part showing the groove. 図４は曲げ工程が終了した状態を示す平面図である。FIG. 4 is a plan view showing a state where the bending process is completed. 図５はモールド工程が終了した状態を示す平面図である。FIG. 5 is a plan view showing a state where the molding process is completed. 図６は圧着工程が終了した状態を示す平面図である。FIG. 6 is a plan view showing a state where the crimping process is completed. 図７は被覆工程が終了した状態を示す平面図である。FIG. 7 is a plan view showing a state where the covering step is completed. 図８は本発明の実施形態１に係るコネクタの内部構造を示す断面図である。FIG. 8 is a cross-sectional view showing the internal structure of the connector according to Embodiment 1 of the present invention. 図９は本発明の実施形態１に係る端子を示す平面図である。FIG. 9 is a plan view showing a terminal according to Embodiment 1 of the present invention. 図１０は発明の実施形態２に係るコネクタの内部構造を示す断面図である。FIG. 10 is a cross-sectional view showing the internal structure of the connector according to Embodiment 2 of the invention.
　１０...端子付き電線
　１１...電線
　１２...雌端子（端子）
　１３...芯線
　１４...絶縁被覆
　１６...ワイヤーバレル
　１９...繋ぎ部
　２０...接続筒部（接続部）
　２２...モールド部（止水壁）
　２３...電線引出部
　２４...熱収縮チューブ（止水被覆）
　２５...絶縁被覆の端部
　３０...コネクタ
　３１...ハウジング
　３２...キャビティ
　３３...大径部
　３４...小径部
　４０...コネクタ
　４１...ハウジング
　４２...キャビティ
　４３...電線引出部 10 ... Electric wire with terminal 11 ... Electric wire 12 ... Female terminal (terminal)
13 ... Core wire 14 ... Insulation coating 16 ... Wire barrel 19 ... Connection part 20 ... Connection tube part (connection part)
22 ... Mold part (water barrier)
23 ... Electrical outlet 24 ... Heat-shrinkable tube (water-proof coating)
25 ... End of insulation coating 30 ... Connector 31 ... Housing 32 ... Cavity 33 ... Large diameter part 34 ... Small diameter part 40 ... Connector 41 ... Housing 42 .. .Cavity 43 ... Wire lead-out part
　＜実施形態１＞
　本発明の実施形態１に係るコネクタ３０を図１ないし図９の図面を参照しながら説明する。本実施形態に係るコネクタ３０は、図８に示すように、複数のキャビティ３２が内部に形成された合成樹脂製のハウジング３１を有している。キャビティ３２は、ハウジング３１の前後両側に開口する形態をなし、キャビティ３２の後端開口から端子付き電線１０がキャビティ３２に収容されるようになっている。端子付き電線１０は、電線１１と、この電線１１に接続された雌端子１２（端子の一例）と、を備えて構成されている。 <Embodiment 1>
A connector 30 according to Embodiment 1 of the present invention will be described with reference to the drawings of FIGS. As shown in FIG. 8, the connector 30 according to the present embodiment includes a synthetic resin housing 31 in which a plurality of cavities 32 are formed. The cavity 32 is configured to open on both front and rear sides of the housing 31, and the terminal-attached electric wire 10 is accommodated in the cavity 32 from the rear end opening of the cavity 32. The electric wire with terminal 10 includes an electric wire 11 and a female terminal 12 (an example of a terminal) connected to the electric wire 11.
（電線１１）
　電線１１は、複数の金属細線を撚り合せてなる芯線１３と、芯線１３の外周を被覆する合成樹脂製の絶縁被覆１４と、を備える。芯線１３は、銅、銅合金、アルミニウム、アルミニウム合金等、必要に応じて任意の金属から構成される。本実施形態においては、アルミニウム又はアルミニウム合金が用いられている。電線１１の端末においては、絶縁被覆１４が剥離されることにより、芯線１３が露出している。なお、芯線１３は単芯線でもよい。 (Wire 11)
The electric wire 11 includes a core wire 13 formed by twisting a plurality of fine metal wires and an insulating coating 14 made of a synthetic resin that covers the outer periphery of the core wire 13. The core wire 13 is comprised from arbitrary metals as needed, such as copper, a copper alloy, aluminum, an aluminum alloy. In this embodiment, aluminum or an aluminum alloy is used. At the end of the electric wire 11, the core wire 13 is exposed by peeling off the insulating coating 14. The core wire 13 may be a single core wire.
（雌端子１２）
　雌端子１２は、相手側端子（図示せず）と接続される接続筒部２０（接続部の一例）と、電線１１の端部において絶縁被覆１４を皮剥きすることで露出された芯線１３に圧着されるワイヤーバレル１６と、接続筒部２０とワイヤーバレル１６を接続する溝状の繋ぎ部１９と、を備えて構成されている。接続筒部２０は角筒状をなす角筒部を有し、その角筒部の内部には相手側端子と弾性的に接触する弾性接触片２１が設けられている。この雌端子１２は、接続筒部２０、繋ぎ部１９、及びワイヤーバレル１６に共通する底板１５を有している。この底板１５に電線１１の絶縁被覆１４及び芯線１３が載置されている。 (Female terminal 12)
The female terminal 12 is connected to the connecting tube portion 20 (an example of a connecting portion) connected to a mating terminal (not shown) and the core wire 13 exposed by peeling off the insulating coating 14 at the end of the electric wire 11. It comprises a wire barrel 16 to be crimped, and a connecting portion 19 and a groove-like connecting portion 19 that connects the wire barrel 16. The connecting tube portion 20 has a rectangular tube portion having a rectangular tube shape, and an elastic contact piece 21 that elastically contacts the mating terminal is provided inside the rectangular tube portion. The female terminal 12 has a bottom plate 15 that is common to the connecting cylinder portion 20, the connecting portion 19, and the wire barrel 16. On this bottom plate 15, the insulation coating 14 and the core wire 13 of the electric wire 11 are placed.
　ところで、本実施形態の雌端子１２には、絶縁被覆１４を固着するためのインシュレーションバレルが設けられておらず、ワイヤーバレル１６の後端が雌端子１２の後端とされている。また、ワイヤーバレル１６の後端から絶縁被覆１４の前端に至るまでの領域には、絶縁被覆１４が除去されることで芯線１３が所定の長さだけ後方に引き出された電線引出部２３が形成されている。この電線引出部２３は、通常よりも長めに形成されており、電線引出部２３の前後長さは、繋ぎ部１９の前後長さとワイヤーバレル１６の前後長さとの合計にほぼ等しくなっている。 Incidentally, the female terminal 12 of this embodiment is not provided with an insulation barrel for fixing the insulating coating 14, and the rear end of the wire barrel 16 is the rear end of the female terminal 12. Further, in the region from the rear end of the wire barrel 16 to the front end of the insulating coating 14, a wire lead-out portion 23 is formed in which the core wire 13 is drawn backward by a predetermined length by removing the insulating coating 14. Has been. The wire lead-out portion 23 is formed longer than usual, and the front-rear length of the wire lead-out portion 23 is substantially equal to the sum of the front-rear length of the connecting portion 19 and the front-rear length of the wire barrel 16.
　雌端子１２は金属板材を所定形状にプレス加工して形成されている。雌端子１２を構成する金属としては、銅、銅合金等、必要に応じて任意の金属を採用しうる。また、金属板材の表面には図示しないメッキ層が形成されている。メッキ層を構成する金属としては、スズ、ニッケル等、必要に応じて任意の金属を採用しうる。本実施形態においては、銅又は銅合金の表面にスズメッキ層が形成されている。なお、金属板材の表面にメッキ層を形成しない構成としてもよい。 The female terminal 12 is formed by pressing a metal plate material into a predetermined shape. As a metal which comprises the female terminal 12, arbitrary metals, such as copper and a copper alloy, can be employ | adopted as needed. A plating layer (not shown) is formed on the surface of the metal plate. As a metal which comprises a plating layer, arbitrary metals, such as tin and nickel, can be employ | adopted as needed. In the present embodiment, a tin plating layer is formed on the surface of copper or a copper alloy. In addition, it is good also as a structure which does not form a plating layer on the surface of a metal plate material.
　ワイヤーバレル１６は、底板１５と、この底板１５の両側縁から対向状態をなして上方に立ち上がる一対のバレル片１７，１７とから構成されている。ワイヤーバレル１６は、電線１１の芯線１３が底板１５に載置された状態で、両バレル片１７，１７と底板１５との間で芯線１３をかしめ付けることでワイヤーバレル１６が芯線１３に圧着されている。 The wire barrel 16 includes a bottom plate 15 and a pair of barrel pieces 17 and 17 that rise upward from both side edges of the bottom plate 15. The wire barrel 16 is crimped to the core wire 13 by crimping the core wire 13 between the barrel pieces 17 and 17 and the bottom plate 15 in a state where the core wire 13 of the electric wire 11 is placed on the bottom plate 15. ing.
　図４に示すように、ワイヤーバレル１６のうち両バレル片１７によって圧着される圧着面、すなわち圧着に伴って芯線１３と接触する側の面に、複数の凹部１８が形成されている。凹部１８は、略四角形状をなしており、詳細には略平行四辺形状をなしている。また、芯線１３の延びる方向（前後方向）に隣り合う一対の凹部１８は、前後方向にオーバーラップする態様で配されているので、芯線１３の延びる方向と直交する方向（幅方向）における全域で芯線１３を圧着できる。したがって、芯線１３とワイヤーバレル１６との固着力を向上させることができる。 As shown in FIG. 4, a plurality of recesses 18 are formed on the crimping surface of the wire barrel 16 that is crimped by both barrel pieces 17, that is, the surface that comes into contact with the core wire 13 along with the crimping. The concave portion 18 has a substantially quadrangular shape, and specifically has a substantially parallelogram shape. Moreover, since the pair of recesses 18 adjacent to each other in the direction in which the core wire 13 extends (front-rear direction) are arranged in an overlapping manner in the front-rear direction, the entire region in the direction orthogonal to the direction in which the core wire 13 extends (width direction). The core wire 13 can be crimped. Therefore, the fixing force between the core wire 13 and the wire barrel 16 can be improved.
　また、圧着に伴って複数の凹部１８の口縁が芯線１３の表面に摺接するので、凹部１８の口縁が芯線１３の表面に形成された絶縁性の酸化被膜等を突き破って芯線１３に接触することになる。したがって、凹部１８の口縁と芯線１３との接触面積が大きくなる結果、雌端子１２と芯線１３との電気抵抗値を低くすることができる。 Further, since the rims of the plurality of recesses 18 come into sliding contact with the surface of the core wire 13 along with the crimping, the rims of the recesses 18 contact the core wire 13 through the insulating oxide film formed on the surface of the core wire 13. Will do. Accordingly, the contact area between the mouth edge of the recess 18 and the core wire 13 is increased. As a result, the electrical resistance value between the female terminal 12 and the core wire 13 can be lowered.
　繋ぎ部１９は、断面が略Ｕ字形状をなして上方に開口しており、底板１５と、底板１５の両側縁から上方に立ち上がる一対の側板とから構成されている。両側板は、それぞれ両バレル片１７に連設されている。なお、繋ぎ部１９の断面形状としては、例えば半円形状としてもよく、必要に応じて任意の形状を採用しうる。また、繋ぎ部１９は、底板１５における芯線１３が載置された側の面を凹形状に曲げ加工して形成されている。 The connecting portion 19 is formed of a bottom plate 15 and a pair of side plates that rise upward from both side edges of the bottom plate 15. Both side plates are connected to both barrel pieces 17 respectively. In addition, as a cross-sectional shape of the connection part 19, it is good also as a semicircle shape, for example, and can employ | adopt arbitrary shapes as needed. The connecting portion 19 is formed by bending the surface of the bottom plate 15 on the side where the core wire 13 is placed into a concave shape.
（モールド部２２）
　繋ぎ部１９には、合成樹脂をモールド成形してなるモールド部２２（止水壁の一例）が設けられている。モールド部２２を構成する合成樹脂としては、ポリアミド、ポリエステル、ポリプロピレン、ポリエチレン等の熱可塑性樹脂を用いてもよく、また、エポキシ樹脂等の熱硬化性樹脂を用いてもよく、必要に応じて任意の合成樹脂を用いることができる。上記の合成樹脂は、１種類のみを用いてもよく、また、複数種類の合成樹脂を混合して用いてもよい。本実施形態においては、ポリアミド系熱可塑性樹脂が用いられている。 (Mold part 22)
The joint portion 19 is provided with a mold portion 22 (an example of a water blocking wall) formed by molding a synthetic resin. As the synthetic resin constituting the mold part 22, a thermoplastic resin such as polyamide, polyester, polypropylene, or polyethylene may be used, or a thermosetting resin such as an epoxy resin may be used. These synthetic resins can be used. As for said synthetic resin, only 1 type may be used and multiple types of synthetic resin may be mixed and used. In the present embodiment, a polyamide-based thermoplastic resin is used.
　モールド部２２は、図３に示すように、繋ぎ部１９の外周を全周に亘って包囲して形成されている。換言すると、繋ぎ部１９は、モールド部２２の内部に埋設されている。本実施形態においては、モールド部２２の断面は横長の略方形状をなし、四隅の角部が丸められた形状とされている。 As shown in FIG. 3, the mold part 22 is formed so as to surround the outer periphery of the connecting part 19 over the entire circumference. In other words, the connecting portion 19 is embedded in the mold portion 22. In the present embodiment, the cross section of the mold part 22 is a horizontally long substantially square shape, and the corners of the four corners are rounded.
（熱収縮チューブ２４）
　図２に示すように、モールド部２２からワイヤーバレル１６、電線引出部２３を通って絶縁被覆１４の端部２５に至るまでの領域は、合成樹脂材からなる筒状の熱収縮チューブ２４（止水被覆の一例）によって被覆されている。本実施形態においては、熱収縮チューブ２４の内面には、図示しない接着層又は粘着層が形成されている。接着層又は粘着層は、加熱されて軟化又は溶融することにより、接着性又は粘着性が発現するようになっている。なお、熱収縮チューブ２４の内面に接着層又は粘着層を設けない構成としてもよい。熱収縮チューブ２４の前後長さは、モールド部２２の後端から絶縁被覆１４の前端に至るまでの領域の前後長さよりも長く設定されている。 (Heat shrink tube 24)
As shown in FIG. 2, the region from the mold part 22 through the wire barrel 16 and the wire lead-out part 23 to the end part 25 of the insulating coating 14 is a cylindrical heat-shrinkable tube 24 (stopped) made of a synthetic resin material. An example of water coating). In the present embodiment, an adhesive layer or an adhesive layer (not shown) is formed on the inner surface of the heat shrinkable tube 24. The adhesive layer or the pressure-sensitive adhesive layer is heated and softened or melted to exhibit adhesiveness or tackiness. In addition, it is good also as a structure which does not provide an adhesive layer or an adhesion layer in the inner surface of the heat contraction tube 24. FIG. The front-rear length of the heat shrinkable tube 24 is set longer than the front-rear length of the region from the rear end of the mold part 22 to the front end of the insulating coating 14.
　熱収縮チューブ２４の内面は、熱収縮チューブ２４が加熱されて収縮した状態において、モールド部２２の外周面と全周に亘って隙間なく密着している。また、熱収縮チューブ２４の内面は、絶縁被覆１４の端部２５の外周面と全周に亘って隙間なく密着している。 The inner surface of the heat-shrinkable tube 24 is in close contact with the outer peripheral surface of the mold part 22 without a gap in a state where the heat-shrinkable tube 24 is heated and contracted. Further, the inner surface of the heat shrinkable tube 24 is in close contact with the outer peripheral surface of the end portion 25 of the insulating coating 14 without any gap.
　モールド部２２を構成する合成樹脂材として、加熱によって軟化又は溶融することにより接着性を発現するものを用いてもよい。この場合には、熱収縮チューブ２４を加熱する工程において、モールド部２２を軟化又は溶融させ、熱収縮チューブ２４の内面とモールド部２２とを接着する構成とすることができる。 As the synthetic resin material constituting the mold portion 22, a material that exhibits adhesiveness by being softened or melted by heating may be used. In this case, in the process of heating the heat-shrinkable tube 24, the mold part 22 can be softened or melted to bond the inner surface of the heat-shrinkable tube 24 and the mold part 22.
　熱硬化された状態の熱収縮チューブ２４は、電線引出部２３がワイヤーバレル１６に対して遊動することを規制できる程度の硬さを有している。このため、端子付き電線１０をキャビティ３２に挿入する前に、電線引出部２３が曲がることにより、電線引出部２３におけるワイヤーバレル１６側の端部２３Ａに曲げ応力が集中して芯線１３が破断する事態を未然に回避できるようになっている。すなわち、予め電線引出部２３が熱収縮チューブ２４で覆われた状態としておくことで電線引出部２３が曲がりにくくなり、ワイヤーバレル１６側の端部２３Ａにおける芯線１３の破断を規制することができる。 The heat-shrinkable tube 24 in the heat-cured state has a hardness that can restrict the wire drawing portion 23 from floating with respect to the wire barrel 16. For this reason, before inserting the terminal-attached electric wire 10 into the cavity 32, the electric wire drawing portion 23 bends, whereby bending stress concentrates on the end 23A on the wire barrel 16 side of the electric wire drawing portion 23 and the core wire 13 is broken. The situation can be avoided in advance. That is, by setting the wire drawing portion 23 to be covered with the heat-shrinkable tube 24 in advance, the wire drawing portion 23 is difficult to bend, and breakage of the core wire 13 at the end 23A on the wire barrel 16 side can be restricted.
（ハウジング３１）
　さて、本実施形態では図８に示すように、電線引出部２３を長めに形成することにより、熱収縮チューブ２４において絶縁被覆１４の端部２５を覆う大径部３３がキャビティ３２の外部にはみ出た状態とされている。一方、熱収縮チューブ２４において電線引出部２３を覆う小径部３４がキャビティ３２に収容されている。より具体的に説明すると、キャビティ３２の内径は、小径部３４を収容できるように小径部３４の外径とほぼ同じかこれよりやや大きめに設定されているものの、大径部３３の外径よりも小さめに設定されている。また、隣り合うキャビティ３２間の隔壁３５の寸法は、隣り合う大径部３３が干渉しない程度に設定されている。これらによって、ハウジング３１の小型化が図られている。 (Housing 31)
In this embodiment, as shown in FIG. 8, the large diameter portion 33 that covers the end portion 25 of the insulating coating 14 in the heat shrinkable tube 24 protrudes outside the cavity 32 by forming the wire drawing portion 23 longer. It is supposed to be in a state. On the other hand, a small diameter portion 34 that covers the wire lead-out portion 23 in the heat shrinkable tube 24 is accommodated in the cavity 32. More specifically, the inner diameter of the cavity 32 is set to be approximately the same as or slightly larger than the outer diameter of the small-diameter portion 34 so that the small-diameter portion 34 can be accommodated. Is also set smaller. Moreover, the dimension of the partition 35 between the adjacent cavities 32 is set to such an extent that the adjacent large diameter part 33 does not interfere. As a result, the housing 31 is reduced in size.
　ハウジング３１を小型化できる理由は、キャビティ３２の内径を小さくした上で、キャビティ３２間の隔壁３５の寸法を小さくできるからである。まず、キャビティ３２の内径を小さくできる理由は、大径部３３が小径部３４よりも一回り大きく形成されているものの、大径部３３をキャビティ３２の外部に配置したことにより、キャビティ３２の内径を大径部３３の外径よりも小さめに設定できるからである。次に、キャビティ３２間の隔壁３５の寸法を小さくできる理由は、大径部３３同士を干渉しない程度に近づけて配置しているからである。 The reason why the housing 31 can be reduced in size is that the size of the partition 35 between the cavities 32 can be reduced while the inner diameter of the cavities 32 is reduced. First, the reason why the inner diameter of the cavity 32 can be reduced is that although the large-diameter portion 33 is formed to be slightly larger than the small-diameter portion 34, the large-diameter portion 33 is disposed outside the cavity 32, so This is because it can be set smaller than the outer diameter of the large-diameter portion 33. Next, the reason why the size of the partition wall 35 between the cavities 32 can be reduced is that the large-diameter portions 33 are arranged close enough not to interfere with each other.
　更に、キャビティ３２の内壁を小径部３４の外径とほぼ同じに設定したことにより、小径部３４が、キャビティ３２の内部において芯線１３の延びる方向と直交する方向に移動することが規制されている。この結果、電線引出部２３の遊動を防ぐことができ、電線引出部２３におけるワイヤーバレル１６側の端部２３Ａにおいて芯線１３が破断することもない。 Furthermore, by setting the inner wall of the cavity 32 to be substantially the same as the outer diameter of the small diameter portion 34, the small diameter portion 34 is restricted from moving in the direction orthogonal to the direction in which the core wire 13 extends inside the cavity 32. . As a result, the wire drawing portion 23 can be prevented from floating, and the core wire 13 is not broken at the end 23A of the wire drawing portion 23 on the wire barrel 16 side.
（製造工程）
　続いて、本実施形態に係るコネクタ３０の製造工程の一例を示す。まず、金属板材に打ち抜き工程（図示せず）を実行することにより、帯状をなすキャリア２６と、このキャリア２６の側縁に連結された複数の端子片２７と、を形成する。キャリア２６には、長手方向に沿って略等間隔に並ぶ送り孔２８が形成されている。この送り孔２８には、加工機に設けられた図示しない送り爪が係合するようになっている。なお、打ち抜き工程において、ワイヤーバレル１６の圧着面に複数の凹部１８を形成してもよく、あるいは打ち抜き工程とは別の工程において、上記の凹部１８を形成してもよい。 (Manufacturing process)
Then, an example of the manufacturing process of the connector 30 which concerns on this embodiment is shown. First, by performing a punching process (not shown) on the metal plate material, a carrier 26 having a strip shape and a plurality of terminal pieces 27 connected to the side edges of the carrier 26 are formed. The carrier 26 is formed with feed holes 28 arranged at substantially equal intervals along the longitudinal direction. A feed claw (not shown) provided in the processing machine is engaged with the feed hole 28. In the punching process, a plurality of recesses 18 may be formed on the pressure-bonding surface of the wire barrel 16, or the recesses 18 may be formed in a process different from the punching process.
　次に、図４に示すように、打ち抜き工程が実行された端子片２７に対して曲げ工程を実行する。この曲げ工程において端子片２７に曲げ加工を施すと、端子片２７が芯線１３の延びる方向に長めに成形されると共に繋ぎ部１９と接続筒部２０とが成形される。 Next, as shown in FIG. 4, a bending process is performed on the terminal piece 27 on which the punching process has been performed. When the terminal piece 27 is bent in this bending step, the terminal piece 27 is formed longer in the direction in which the core wire 13 extends, and the connecting portion 19 and the connecting tube portion 20 are formed.
　続いて、図５に示すように、キャリア２６に形成された送り孔２８を送り爪に係合させることで、順次、端子片２７を送りながら、端子片２７の繋ぎ部１９にモールド部２２をモールド成形する。詳細に説明すると、まず、図示しない一対の金型によって、繋ぎ部１９のうちモールド部２２を形成すべき部分を上下方向から挟み付ける。次いで、金型の内部に形成された成形空間に、溶融状態の合成樹脂を射出する。合成樹脂が金型内で固化した後、一対の金型を開き、モールド部２２が形成された端子片２７を金型から離脱させる。上記の工程を、略一定の間隔で、キャリア２６に連結された複数の端子片２７に対して順次実行する。 Subsequently, as shown in FIG. 5, by engaging the feed hole 28 formed in the carrier 26 with the feed claw, the mold part 22 is connected to the connecting part 19 of the terminal piece 27 while sequentially feeding the terminal piece 27. Mold. More specifically, first, a portion of the connecting portion 19 where the mold portion 22 is to be formed is sandwiched from above and below by a pair of molds (not shown). Next, a synthetic resin in a molten state is injected into a molding space formed inside the mold. After the synthetic resin is solidified in the mold, the pair of molds are opened, and the terminal piece 27 on which the mold part 22 is formed is detached from the mold. The above steps are sequentially executed on the plurality of terminal pieces 27 connected to the carrier 26 at substantially constant intervals.
　続いて端子片２７に対して圧着工程を実行する。詳細に説明すると、電線１１の端末にて絶縁被覆１４を皮剥きして芯線１３を露出させておき、電線１１から露出する芯線１３及び絶縁被覆１４を、端子片２７の底板１５に載置する。その後、図示しない金型によって両バレル片１７を芯線１３の外側から抱くようにかしめる。これにより、ワイヤーバレル１６を芯線１３に圧着する。 Subsequently, a crimping process is performed on the terminal piece 27. More specifically, the insulation coating 14 is peeled off at the end of the electric wire 11 to expose the core wire 13, and the core wire 13 and the insulation coating 14 exposed from the electric wire 11 are placed on the bottom plate 15 of the terminal piece 27. . Thereafter, the two barrel pieces 17 are caulked from outside the core wire 13 by a mold (not shown). Thereby, the wire barrel 16 is pressure-bonded to the core wire 13.
　本実施形態においては、上記の圧着工程と同時に、キャリア２６から端子片２７を切断する切断工程を実行する。これにより、図６に示すように、各端子片２７はキャリア２６から切断されて、電線１１に接続された状態の雌端子１２とされる。なお、図９に示すように、キャリア２６から切断された雌端子１２に対して電線１１を圧着接続することにより、電線１１に接続された雌端子１２を形成してもよい。 In the present embodiment, a cutting process for cutting the terminal pieces 27 from the carrier 26 is performed simultaneously with the above-described crimping process. Thereby, as shown in FIG. 6, each terminal piece 27 is cut from the carrier 26 to be the female terminal 12 connected to the electric wire 11. As shown in FIG. 9, the female terminal 12 connected to the electric wire 11 may be formed by crimping and connecting the electric wire 11 to the female terminal 12 cut from the carrier 26.
　続いて、被覆工程を実行する。詳細に説明すると、熱収縮チューブ２４を接続筒部２０側から挿通し、モールド部２２から絶縁被覆１４の端部２５に至るまでの領域に被せる。熱収縮チューブ２４の内径は、加熱前の状態において、接続筒部２０の外形よりも大きくなるように設定することにより、比較的容易に、接続筒部２０側から挿通させることができる。なお、電線１１側から挿通させる場合には、圧着工程を実行する前に、予め電線１１に熱収縮チューブ２４を先通ししておけばよい。 Subsequently, the covering process is executed. In detail, it inserted through heat shrinkable tube 24 from the connecting tube portion 20 side, to cover the area from the molded part 22 up to the end 25 of the insulating coating 14. By setting the inner diameter of the heat-shrinkable tube 24 to be larger than the outer shape of the connecting cylinder part 20 in the state before heating, it can be inserted from the connecting cylinder part 20 side relatively easily. Incidentally, in the case for inserting the wire 11 side, before performing the compression process, it is sufficient to through previous heat shrinkable tube 24 to advance the wire 11.
　熱収縮チューブ２４を挿通させた後、図示しない加熱装置で加熱する加熱工程を実行することにより、熱収縮チューブ２４を収縮させる。これにより、熱収縮チューブ２４の内面を、モールド部２２の外面及び絶縁被覆１４の端部２５の外面に対して隙間なく密着させる。このとき、電線引出部２３の外面に対しても熱収縮チューブ２４の内面が密着し、電線引出部２３がワイヤーバレル１６に対して遊動することが規制される。以上により、端子付き電線１０が完成する。 After inserting the heat-shrinkable tube 24, the heat-shrinkable tube 24 is shrunk by executing a heating process of heating with a heating device (not shown). As a result, the inner surface of the heat shrinkable tube 24 is brought into close contact with the outer surface of the mold portion 22 and the outer surface of the end portion 25 of the insulating coating 14 without a gap. At this time, the inner surface of the heat-shrinkable tube 24 is also in close contact with the outer surface of the wire lead-out portion 23, and the wire lead-out portion 23 is restricted from floating with respect to the wire barrel 16. Thus, the terminal-attached electric wire 10 is completed.
　なお、上記の加熱工程において、接続筒部２０を上方に向けた姿勢で加熱することにより、加熱工程においてモールド部２２が溶融した場合でも、モールド部２２を構成する合成樹脂が接続筒部２０内に流入することを抑制することができる。これにより、接続筒部２０における相手側端子との電気的な接続信頼性を向上させることができる。 In the above heating step, the connecting tube portion 20 is heated in an upward direction so that even if the mold portion 22 is melted in the heating step, the synthetic resin constituting the mold portion 22 is contained in the connection tube portion 20. It is possible to suppress inflow into Thereby, the electrical connection reliability with the other party terminal in the connection cylinder part 20 can be improved.
　この後、図８に示すように、端子付き電線１０をキャビティ３２に対して後方から順次挿入していき、キャビティ３２の内部に形成されたランス（図示せず）によって端子付き電線１０を抜け止め状態に保持する。こうして、全てのキャビティ３２に端子付き電線１０が挿入されると、コネクタ３０が完成する。 Thereafter, as shown in FIG. 8, the terminal-attached electric wire 10 is sequentially inserted into the cavity 32 from the rear, and the terminal-attached electric wire 10 is prevented from being detached by a lance (not shown) formed inside the cavity 32. Keep in state. Thus, when the terminal-attached electric wires 10 are inserted into all the cavities 32, the connector 30 is completed.
（作用、効果）
　続いて、本実施形態の作用、効果について説明する。本実施形態によれば、繋ぎ部１９にはモールド部２２が設けられているので、繋ぎ部１９から水が浸入して、芯線１３及びワイヤーバレル１６に水が付着することを抑制できる。更に、モールド部２２の外周面は、熱収縮チューブ２４の内面と、全周に亘って隙間なく密着しているので、モールド部２２と熱収縮チューブ２４との間から水が浸入することも抑制される。これにより、繋ぎ部１９のうちモールド部２２が形成された部分から、ワイヤーバレル１６、電線引出部２３、更に、絶縁被覆１４の端部２５に至るまでの領域は、熱収縮チューブ２４によって止水されるので、芯線１３及びワイヤーバレル１６に水が付着することを確実に抑制できる。 (Function, effect)
Then, the effect | action and effect of this embodiment are demonstrated. According to this embodiment, since the mold part 22 is provided in the connection part 19, it can suppress that water permeates from the connection part 19 and water adheres to the core wire 13 and the wire barrel 16. Furthermore, since the outer peripheral surface of the mold part 22 is in close contact with the inner surface of the heat shrinkable tube 24 without any gap, it is possible to prevent water from entering between the mold part 22 and the heat shrinkable tube 24. Is done. Thereby, the region from the portion of the connecting portion 19 where the mold portion 22 is formed to the wire barrel 16, the wire lead-out portion 23, and further to the end portion 25 of the insulating coating 14 is stopped by the heat shrinkable tube 24. Therefore, it is possible to reliably suppress water from adhering to the core wire 13 and the wire barrel 16.
　芯線１３を構成する金属と、雌端子１２を構成する金属とが異なる場合、芯線１３とワイヤーバレル１６との双方に亘って水が付着すると、芯線１３又はワイヤーバレル１６に電食が発生することが懸念される。本実施形態によれば、芯線１３とワイヤーバレル１６とは熱収縮チューブ２４によって確実に防水されるので、芯線１３又はワイヤーバレル１６が電食により溶解することを抑制できる。 When the metal constituting the core wire 13 is different from the metal constituting the female terminal 12, if water adheres to both the core wire 13 and the wire barrel 16, electrolytic corrosion occurs in the core wire 13 or the wire barrel 16. Is concerned. According to this embodiment, since the core wire 13 and the wire barrel 16 are reliably waterproofed by the heat-shrinkable tube 24, it is possible to suppress the core wire 13 or the wire barrel 16 from being melted by electrolytic corrosion.
　特に、本実施形態のように、芯線１３がアルミニウム又はアルミニウム合金からなり、雌端子１２が銅又は銅合金の表面にスズメッキ層が形成されてなる場合には、比較的にイオン化傾向の大きなアルミニウム又はアルミニウム合金からなる芯線１３が電食により溶解するおそれがあるので、特に有効である。なお、アルミニウム又はアルミニウム合金は比重が比較的に小さいので、電線１１を軽量化できる。 In particular, as in the present embodiment, when the core wire 13 is made of aluminum or an aluminum alloy and the female terminal 12 is formed by forming a tin plating layer on the surface of copper or a copper alloy, aluminum having a relatively large ionization tendency or This is particularly effective because the core wire 13 made of an aluminum alloy may be dissolved by electrolytic corrosion. In addition, since the specific gravity of aluminum or aluminum alloy is relatively small, the electric wire 11 can be reduced in weight.
　また、本実施形態では、インシュレーションバレルを設けていないため、雌端子１２を小型化でき、ハウジング３１の小型化に寄与しうる。その上、大径部３３をキャビティ３２の外部に配置したから、キャビティ３２の内径を小さくでき、ハウジング３１を小型化できる。これらに加えて、大径部３３同士を干渉しない程度に近づけて配置したから、キャビティ３２間の隔壁３５の寸法を小さくでき、ハウジング３１を更に小型化できる。 In this embodiment, since the insulation barrel is not provided, the female terminal 12 can be reduced in size, which can contribute to downsizing of the housing 31. In addition, since the large-diameter portion 33 is disposed outside the cavity 32, the inner diameter of the cavity 32 can be reduced, and the housing 31 can be reduced in size. In addition to these, since the large-diameter portions 33 are arranged close enough not to interfere with each other, the size of the partition 35 between the cavities 32 can be reduced, and the housing 31 can be further downsized.
　また、本実施形態では、熱収縮チューブ２４を装着することによって電線引出部２３を曲がりにくくしている。これにより、電線引出部２３の遊動が規制され、電線引出部２３におけるワイヤーバレル１６側の端部２３Ａに曲げ応力が集中することを回避できる。したがって、ワイヤーバレル１６側の端部２３Ａにおける芯線１３の破断を規制しやすくなる。 Moreover, in this embodiment, the electric wire extraction part 23 is made hard to bend | curve by attaching the heat contraction tube 24. FIG. Thereby, the loose movement of the wire lead-out portion 23 is restricted, and it is possible to avoid the bending stress from concentrating on the end 23 </ b> A on the wire barrel 16 side in the wire lead-out portion 23. Therefore, it becomes easy to regulate the breakage of the core wire 13 at the end 23A on the wire barrel 16 side.
　更に、端子付き電線１０をキャビティ３２に挿入した状態では、小径部３４がキャビティ３２の内壁によって全周に亘って覆われた状態となるため、電線引出部２３がワイヤーバレル１６に対して曲がることはない。したがって、ワイヤーバレル１６側の端部２３Ａに曲げ応力が集中して芯線１３が破断することを防ぐことができる。 Further, in a state where the terminal-attached electric wire 10 is inserted into the cavity 32, the small diameter portion 34 is covered over the entire circumference by the inner wall of the cavity 32, so that the electric wire drawing portion 23 is bent with respect to the wire barrel 16. There is no. Therefore, it is possible to prevent the bending stress from being concentrated on the end 23A on the wire barrel 16 side and the core wire 13 from being broken.
　また、本実施形態によれば、止水被覆が熱収縮チューブ２４からなる。加熱前の状態においては、熱収縮チューブ２４の内径は比較的に大きいので、上記の領域の外周に容易に配置することができる。その後、加熱により収縮させることで、熱収縮チューブ２４の内面を、モールド部２２及び絶縁被覆１４の端部２５と隙間なく密着させることができる。このように、止水被覆として熱収縮チューブ２４を用いることにより、モールド部２２から絶縁被覆１４の端部２５に至るまでの領域の外周に熱収縮チューブ２４を配置する工程の作業効率を向上させることができる。 Further, according to the present embodiment, the water-stop coating is made of the heat shrinkable tube 24. In the state before heating, the inner diameter of the heat-shrinkable tube 24 is relatively large, so that it can be easily disposed on the outer periphery of the region. Then, by contracting by heating, the inner surface of the heat shrinkable tube 24 can be brought into close contact without a gap and the edge 25 of the mold portion 22 and the insulating coating 14. Thus, by using the heat-shrinkable tube 24 as the water-stop coating, the work efficiency of the process of arranging the heat-shrinkable tube 24 on the outer periphery of the region from the mold part 22 to the end 25 of the insulating coating 14 is improved. be able to.
　更に、熱収縮チューブ２４の内周面には接着層又は粘着層が形成されているので、熱収縮チューブ２４を収縮させるための加熱工程を実行することにより、熱収縮チューブ２４の内面とモールド部２２の外面とを隙間なく密着させることができると共に、熱収縮チューブ２４の内面と絶縁被覆１４の端部２５の外面とを隙間なく密着させることができる。 Further, since the adhesive layer or the adhesive layer is formed on the inner peripheral surface of the heat shrinkable tube 24, the inner surface of the heat shrinkable tube 24 and the mold portion are formed by performing a heating process for shrinking the heat shrinkable tube 24. The outer surface of 22 can be brought into close contact with no gap, and the inner surface of the heat shrinkable tube 24 and the outer surface of the end portion 25 of the insulating coating 14 can be brought into close contact with each other without any gap.
　このように、止水被覆として内周面に接着層又は粘着層が形成された熱収縮チューブ２４を用いることにより、モールド部２２から絶縁被覆１４の端部に至るまでの領域の外周に熱収縮チューブ２４を配置する工程の作業効率を向上させることができると共に、熱収縮チューブ２４と、モールド部２２及び絶縁被覆１４の端部２５との密着性を向上させることができる。 Thus, by using the heat-shrinkable tube 24 in which the adhesive layer or the adhesive layer is formed on the inner peripheral surface as the water-stopping coating, heat shrinkage is performed on the outer periphery of the region from the mold part 22 to the end of the insulating coating 14. The work efficiency of the step of arranging the tube 24 can be improved, and the adhesion between the heat shrinkable tube 24 and the end portion 25 of the mold portion 22 and the insulating coating 14 can be improved.
　また、一般に、合成樹脂を射出成形する場合、複数の成形品を一定の間隔で連続的に射出成形する方が、不規則な間隔で射出成形を行うよりも効率がいい。これは、溶融状態の合成樹脂を成形空間に射出した後、固化させ、金型から成形品を離脱させるという一連の工程を連続的に実行することにより、金型の温度条件、合成樹脂の射出条件等を安定させることができるからである。本実施形態によると、モールド部２２は、キャリア２６に連結された複数の端子片２７に対してモールド工程を連続的に実行することにより形成される。この結果、モールド工程の作業効率を向上させることができる。 Also, in general, when injection molding a synthetic resin, it is more efficient to injection-mold a plurality of molded articles continuously at regular intervals than to perform injection molding at irregular intervals. This is because the molten resin is injected into the molding space, then solidified, and the molded product is removed from the mold continuously. This is because conditions and the like can be stabilized. According to the present embodiment, the mold part 22 is formed by continuously performing a molding process on the plurality of terminal pieces 27 connected to the carrier 26. As a result, the working efficiency of the molding process can be improved.
　また、本実施形態においては、切断工程は、圧着工程と同一の工程において実行される。これにより、切断工程と圧着工程とを異なる工程で実行する場合に比べて、作業効率を向上させることができる。 In the present embodiment, the cutting process is executed in the same process as the crimping process. Thereby, compared with the case where a cutting process and a crimping | compression-bonding process are performed in a different process, work efficiency can be improved.
　＜実施形態２＞
　次に、本発明の実施形態２を図１０の図面を参照しながら説明する。本実施形態のコネクタ４０は、実施形態１の電線引出部２３及びハウジング３１の形状を変更したものであって、実施形態１と共通する構成、作用、および効果については重複するため、その説明を省略する。また、実施形態１と同じ構成については同一の符号を用いるものとする。 <Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to the drawing of FIG. The connector 40 of the present embodiment is obtained by changing the shapes of the wire lead-out portion 23 and the housing 31 of the first embodiment, and the configuration, operation, and effect common to those of the first embodiment are duplicated. Omitted. The same reference numerals are used for the same configurations as those in the first embodiment.
　ハウジング４１の内部には、キャビティ４２が前後両側に開口して形成されている。本実施形態の端子付き電線４４は、実施形態１の電線引出部２３よりも短めに形成された電線引出部４３を備えて構成されており、これに伴って大径部３３がキャビティ４２に収容されている点で実施形態１と異なっている。また、本実施形態のキャビティ４２の内径は、大径部３３の外径とほぼ同じかこれよりもやや大きめに設定されている。これにより、大径部３３が、キャビティ３２の内部において芯線１３の延びる方向と直交する方向に移動することが規制されている。このため、電線引出部４３におけるワイヤーバレル１５側の端部４３Ａのみならず絶縁被覆１４側の端部４３Ｂにおいても芯線１３が破断することはない。 A cavity 42 is formed in the housing 41 so as to open on both the front and rear sides. The electric wire with terminal 44 of the present embodiment is configured to include an electric wire extraction portion 43 formed shorter than the electric wire extraction portion 23 of the first embodiment, and accordingly, the large diameter portion 33 is accommodated in the cavity 42. This is different from the first embodiment. Further, the inner diameter of the cavity 42 of the present embodiment is set to be substantially the same as or slightly larger than the outer diameter of the large diameter portion 33. As a result, the large-diameter portion 33 is restricted from moving in the direction orthogonal to the direction in which the core wire 13 extends inside the cavity 32. Therefore, the core wire 13 even at the end portion 43B of becoming not insulating coating 14 side only the end portion 43A of the wire barrel 15 side of the wire lead-out portion 43 will not be broken.
　＜実施形態３＞
　本実施形態においては、図示はしないものの、止水被覆として、ゴム弾性を有する弾性チューブを用いている。自然状態における弾性チューブの内径は、モールド部２２の外径及び絶縁被覆１４の外径よりも小さくなるように設定されている。上記以外の構成については、実施形態１と同じであるため、同一部材については同一符号を付し、重複する説明を省略する。 <Embodiment 3>
In this embodiment, although not shown, an elastic tube having rubber elasticity is used as the water blocking coating. The inner diameter of the elastic tube in the natural state is set to be smaller than the outer diameter of the mold portion 22 and the outer diameter of the insulating coating 14. Since the configuration other than the above is the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.
　弾性チューブを雌端子１２に被覆する被覆工程においては、まず、弾性チューブを拡径させた状態で、雌端子１２側から挿通し、モールド部２２から絶縁被覆１４の端部２５に至るまでの領域に配置する。その後、弾性チューブを復帰変形させる。すると、弾性チューブの内面は、モールド部２２から絶縁被覆１４の端部２５に至るまでの領域と密着する。なお、電線１１側から挿通させる場合には、圧着工程を実行する前に、予め電線１１に弾性チューブを先通ししておけばよい。 In the covering step of covering the female terminal 12 with the elastic tube, first, an area extending from the female terminal 12 side to the end 25 of the insulating coating 14 through the female terminal 12 with the diameter of the elastic tube expanded. To place. Thereafter, the elastic tube is returned and deformed. Then, the inner surface of the elastic tube is in close contact with the region from the mold part 22 to the end part 25 of the insulating coating 14. In addition, what is necessary is just to let an elastic tube pass ahead of the electric wire 11 beforehand, before performing a crimping | compression-bonding process, when making it penetrate from the electric wire 11 side.
　このように本態様によれば、弾性チューブを所定の位置に配置した後、復帰変形させるという簡易な工程により、弾性チューブと、モールド部２２及び絶縁被覆１４との境界からの浸水を抑制できる。このため、止水被覆として熱収縮チューブ２４を用いた場合に必要であった加熱工程が、不要となるので、製造コストの低減を図ることができる。 As described above, according to this aspect, it is possible to suppress water from the boundary between the elastic tube, the mold portion 22 and the insulating coating 14 by a simple process in which the elastic tube is arranged at a predetermined position and then restored and deformed. For this reason, the heating process required when the heat-shrinkable tube 24 is used as the water-stop coating is not necessary, and the manufacturing cost can be reduced.
　＜他の実施形態＞
　本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
　（１）上記実施形態においては、端子は雌端子１２であったが、これに限られず、繋ぎ部１９から芯線１３の延びる方向に、更に延びて形成された雄タブを備えた雄端子であってもよく、また、繋ぎ部１９に連なって円板状の接続部を形成し、この接続部に貫通孔が形成された、いわゆるＬＡ端子であってもよい。また、導電部材を相手側電線とし、接続部を相手側電線の芯線が圧着接続されたワイヤーバレルとしてもよい。すなわち、繋ぎ部１９の両側に一対のワイヤーバレルが形成されたスプライス端子としてもよく、必要に応じて任意の形状の端子とすることができる。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the terminal is the female terminal 12, but the terminal is not limited to this, and is a male terminal provided with a male tab that is further extended in the direction in which the core wire 13 extends from the connecting portion 19. Alternatively, it may be a so-called LA terminal in which a disk-like connection portion is formed continuously with the connecting portion 19 and a through hole is formed in the connection portion. Alternatively, the conductive member may be a counterpart electric wire, and the connecting portion may be a wire barrel in which a core wire of the counterpart electric wire is crimped and connected. That is, a splice terminal in which a pair of wire barrels are formed on both sides of the connecting portion 19 may be used, and a terminal having an arbitrary shape may be used as necessary.
　（２）実施形態１においては、モールド部２２の断面は略四角形状をなしていたが、これに限られず、円形状、楕円形状、長円形状等でもよく、また、三角形状等の多角形状であってもよく、必要に応じて任意の形状とすることができる。 (2) In the first embodiment, the cross section of the mold part 22 has a substantially square shape, but is not limited thereto, and may be a circular shape, an elliptical shape, an oval shape, or a polygonal shape such as a triangular shape. It may be any shape as required.
　（３）止水被覆は、シート状をなす止水テープを、モールド部２２から絶縁被覆１４の端部２５に至るまでの領域にテープ巻きする構成としてもよい。 (3) waterproofing coating, a waterproofing tape forming a sheet-like, may be configured to tape winding in the region of the mold portion 22 up to the end 25 of the insulating coating 14.
　（４）上記実施形態においては、モールド部２２は、芯線１３にワイヤーバレル１６を圧着する工程の前に形成する構成としたが、これに限られず、モールド部２２は、芯線１３にワイヤーバレル１６を圧着した後に形成する構成としてもよい。 (4) In the said embodiment, although the mold part 22 was set as the structure formed before the process of crimping | bonding the wire barrel 16 to the core wire 13, it is not restricted to this, The mold part 22 is the wire barrel 16 to the core wire 13. It is good also as a structure formed after crimping | bonding.
　（５）上記実施形態においては、芯線１３がアルミニウム又はアルミニウム合金からなる構成としたが、これに限られず、芯線１３は銅又は銅合金からなる構成としてもよく、必要に応じて任意の金属により形成される構成としてもよい。また、上記実施形態においては、端子が銅又は銅合金からなると共に表面にスズメッキ層が形成される構成としたが、これに限られず、端子は必要に応じて任意の金属からなる構成としてもよい。 (5) In the above embodiment, the core wire 13 is made of aluminum or an aluminum alloy. However, the present invention is not limited to this, and the core wire 13 may be made of copper or a copper alloy. It is good also as a structure formed. Moreover, in the said embodiment, although it was set as the structure which a terminal consists of copper or a copper alloy and a tin plating layer is formed in the surface, it is not restricted to this, A terminal is good also as a structure which consists of arbitrary metals as needed. .
　（６）上記実施形態においては、圧着工程と切断工程とを同一の工程で実行する態様としたが、これに限られず、圧着工程を実行した後に、切断工程を実行する構成としてもよいし、切断工程を実行した後に、個片の状態で圧着工程を実行してもよい。 (6) In the above embodiment, the crimping process and the cutting process are performed in the same process, but the present invention is not limited thereto, and the cutting process may be performed after the crimping process is performed. After performing a cutting process, you may perform a crimping | compression-bonding process in the state of an individual piece.
　（７）上記実施形態においては、電線引出部がキャビティに収容されているものの、本発明によると、電線引出部がキャビティの外部に配置されているものでもよい。 (7) In the above embodiment, although the wire lead-out portion is accommodated in the cavity, according to the present invention, the wire lead-out portion may be disposed outside the cavity.
　（８）上記実施形態においては、止水被覆（熱収縮チューブ２４、弾性チューブ）における絶縁被覆１４の端部２５を覆う部分を大径部としているものの、本発明によると、止水被覆における最大外径の部分の大径部としてもよい。同様に、止水被覆における最小外径の部分を小径部としてもよい。 (8) In the above embodiment, the portion covering the end portion 25 of the insulating coating 14 in the water-stop coating (heat-shrinkable tube 24, elastic tube) is a large-diameter portion. It is good also as a large diameter part of the outer diameter part. Similarly, the minimum outer diameter portion of the water blocking coating may be a small diameter portion.
（課題を解決するための手段） (Means for solving the problem)
　本明細書に開示された技術は、芯線の外周を絶縁被覆で被覆してなる電線に端子が接続され、キャビティが形成されたハウジングの前記キャビティに前記端子が収容されたコネクタであって、前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、この止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられており、前記電線における前記止水壁とは反対側に引き出された電線引出部は、前記止水被覆に覆われることでその遊動が規制されている。 The technology disclosed in the present specification is a connector in which a terminal is connected to an electric wire formed by coating an outer periphery of a core wire with an insulating coating, and the terminal is accommodated in the cavity of a housing in which a cavity is formed, The terminal includes a connection portion connected to the conductive member, a wire barrel crimped to the core wire exposed from the end portion of the insulating coating, and a connecting portion connecting the connection portion and the wire barrel. The water stop wall is formed by molding synthetic resin at the joint portion, and the water stop wall and the insulation coating are in close contact with the outer surface of the water stop wall and the outer surface of the end portion of the insulation coating. A cylindrical water-stop coating covering the core wire is provided between the end of the wire, and the wire lead-out portion drawn out on the side opposite to the water-stop wall in the electric wire is connected to the water-stop coating. The movement is regulated by being covered. To have.
　また、本明細書に開示された技術は、芯線の外周を絶縁被覆で被覆してなる電線から露出した前記芯線に端子が接続された端子付き電線であって、前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、この止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられており、前記電線における前記止水壁とは反対側に引き出された電線引出部は、前記止水被覆に覆われることでその遊動が規制されている。 Further, the technology disclosed in this specification is an electric wire with a terminal in which a terminal is connected to the core wire exposed from an electric wire formed by coating an outer periphery of the core wire with an insulating coating, and the terminal is connected to a conductive member. A connecting portion, a wire barrel that is crimped to the core wire exposed from the end of the insulating coating, and a connecting portion that connects the connecting portion and the wire barrel. A water blocking wall formed by molding synthetic resin is provided, and is in close contact with the outer surface of the water blocking wall and the outer surface of the end of the insulating coating, between the water blocking wall and the end of the insulating coating. A tubular water-stop coating covering the core wire is provided over the wire, and the wire lead-out portion drawn out to the opposite side of the water-stop wall in the electric wire is covered with the water-stop coating, so It is regulated.
　また、本明細書に開示された技術はは、芯線の外周を絶縁被覆で被覆してなる電線から露出する前記芯線に接続される端子であって、前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、この止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられるようになっており、前記電線における前記止水壁とは反対側に引き出された電線引出部は、前記止水被覆に覆われることでその遊動が規制される。 The technology disclosed in this specification is a terminal connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating, and the terminal is connected to a conductive member. And a wire barrel that is crimped to the core wire exposed from the end of the insulation coating, and a connecting portion that connects the connecting portion and the wire barrel, and the connecting portion is made of synthetic resin. A water blocking wall formed by molding is provided, and is in close contact with the outer surface of the water blocking wall and the outer surface of the end portion of the insulating coating, and extends between the water blocking wall and the end portion of the insulating coating. A tubular waterproof coating that covers the core wire is provided, and the wire lead-out portion that is drawn out to the opposite side of the waterproof wall of the electric wire is covered with the waterproof coating so that the floating of the wire drawing portion is provided. Be regulated.
　本明細書に開示された技術によれば、繋ぎ部に止水壁が成形されているので、繋ぎ部と止水壁との間から水が浸入することを抑制できる。更に、止水被覆は止水壁の外面と密着しているので、止水被覆と止水壁の外面との間から水が浸入することも抑制される。これにより、止水壁から絶縁被覆の端部に至る領域は、止水被覆によって防水されるので、芯線及びワイヤーバレルに水が付着することを抑制できる。 According to the technique disclosed in the present specification, the water blocking wall is formed at the connecting portion, so that it is possible to prevent water from entering between the connecting portion and the water blocking wall. Moreover, waterproofing coating since the close contact with the outer surface of the cut-off wall, it is suppressed that water enters from between the outer surface of the waterproofing coating and the cut-off wall. Thus, the area extending to the end of the insulating coating from the water-stop wall, because it is waterproof by the water stop coating, can be suppressed water from adhering to the core wire and the wire barrel.
　また、本明細書に開示された技術では絶縁被覆を端子に固着するインシュレーションバレルが設けられていないため、端子を小型化できる。しかしながら、インシュレーションバレルをなくしてしまうと、電線引出部がワイヤーバレルに対して曲がりやすくなり、曲げ応力が電線引出部におけるワイヤーバレル側の端部に集中することにより、芯線が破断するおそれがある。その点、本明細書に開示された技術によれば、電線引出部を止水被覆で覆うことにより電線引出部の遊動を規制できるため、電線引出部におけるワイヤーバレル側の端部において芯線の破断を防ぐことができる。 Further, in the technique disclosed in this specification, since the insulation barrel for fixing the insulating coating to the terminal is not provided, the terminal can be reduced in size. However, if the insulation barrel is eliminated, the wire lead-out portion is easily bent with respect to the wire barrel, and the bending stress concentrates on the end of the wire lead-out portion on the wire barrel side, which may break the core wire. . In that respect, according to the technique disclosed in the present specification, since the looseness of the wire lead-out portion can be regulated by covering the wire lead-out portion with a water blocking coating, the core wire breaks at the end of the wire lead-out portion on the wire barrel side. Can be prevented.
　本明細書に開示された技術の実施態様としては以下の構成が好ましい。
　前記電線引出部は、更に前記キャビティに収容されることでその遊動が規制されている構成としてもよい。 As an embodiment of the technology disclosed in the present specification, the following configuration is preferable.
The wire drawing portion may be further accommodated in the cavity so that its play is restricted.
　このような構成によると、電線引出部を覆う止水被覆がキャビティに収容され、止水被覆の外面がキャビティの内壁に接触することで電線引出部の遊動を規制しやすくなる。 According to such a configuration, the waterproof coating covering the wire lead-out portion is accommodated in the cavity, and the outer surface of the water-stop coating comes into contact with the inner wall of the cavity, thereby making it easy to regulate the looseness of the wire lead-out portion.
　前記止水被覆における前記キャビティに収容された部分の外径が前記キャビティの内径と同じに設定されることで前記電線引出部の遊動が規制されている構成としてもよい。ここで、「同じ」とは、止水被覆の外径がキャビティの内径と同一である場合の他、止水被覆の外径がキャビティの内径よりもやや小さめである場合を含む意味である。 The outer diameter of the portion accommodated in the cavity in the water blocking coating may be set to be the same as the inner diameter of the cavity so that the loosening of the wire lead-out portion is restricted. Here, “same” means not only the case where the outer diameter of the water blocking coating is the same as the inner diameter of the cavity, but also the case where the outer diameter of the water blocking coating is slightly smaller than the inner diameter of the cavity.
　このような構成によると、キャビティに収容された止水被覆の外面がキャビティの内壁にほぼ接触した状態となることで電線引出部の遊動を防ぐことができる。 According to such a configuration, the outer surface of the water blocking coating accommodated in the cavity is almost in contact with the inner wall of the cavity, thereby preventing the wire drawing portion from floating.
　前記止水被覆における前記電線引出部を覆う小径部の外径は、前記キャビティの内径と同じに設定され、前記止水被覆における前記絶縁被覆の端部を覆う大径部の外径は、前記小径部の外径よりも大きく設定され、かつ前記大径部は、前記キャビティの外部に配置されている構成としてもよい。ここで、「同じ」とは、小径部の外径がキャビティの内径と同一である場合の他、小径部の外径がキャビティの内径よりもやや小さめである場合を含む意味である。 The outer diameter of the small-diameter portion that covers the wire lead-out portion in the waterproof coating is set to be the same as the inner diameter of the cavity, and the outer diameter of the large-diameter portion that covers the end of the insulating coating in the waterproof coating is the It is good also as a structure set larger than the outer diameter of a small diameter part, and the said large diameter part being arrange | positioned outside the said cavity. Here, “same” means not only the case where the outer diameter of the small diameter portion is the same as the inner diameter of the cavity, but also the case where the outer diameter of the small diameter portion is slightly smaller than the inner diameter of the cavity.
　このような構成によると、電線引出部を延長して形成し大径部をキャビティの外部に配置することでキャビティの内径を小さくすることができ、ハウジングを小型化できる。また、大径部同士をより近づけて配置することでキャビティ間の隔壁を小さくすることができ、ハウジングをさらに小型化できる。 According to such a configuration, the inner diameter of the cavity can be reduced by extending the wire drawing portion and disposing the large diameter portion outside the cavity, and the housing can be downsized. Moreover, the partition between cavities can be made small by arrange | positioning large diameter parts closer together, and a housing can be reduced further.
　前記止水被覆における前記絶縁被覆の端部を覆う大径部の外径は、前記キャビティの内径と同じに設定され、かつ前記大径部は、前記キャビティに収容されている構成としてもよい。ここで、「同じ」とは、大径部の外径がキャビティの内径と同一である場合の他、大径部の外径がキャビティの内径よりもやや小さめである場合を含む意味である。 The outer diameter of the large-diameter portion that covers the end portion of the insulating coating in the waterproof coating may be set to be the same as the inner diameter of the cavity, and the large-diameter portion may be accommodated in the cavity. Here, “same” means not only the case where the outer diameter of the large diameter portion is the same as the inner diameter of the cavity, but also the case where the outer diameter of the large diameter portion is slightly smaller than the inner diameter of the cavity.
　このような構成によると、大径部をキャビティに収容することで大径部の遊動を防ぐことができるため、電線引出部における絶縁被覆の端部側においても芯線の破断を防ぐことができる。 According to such a configuration, since the large-diameter portion can be prevented from moving by accommodating the large-diameter portion in the cavity, the breakage of the core wire can be prevented even at the end portion of the insulating coating in the wire lead-out portion.
　前記止水壁は、更に、前記繋ぎ部の外周を全周に亘って包囲するように形成されていることが好ましい。 It is preferable that the water blocking wall is further formed so as to surround the entire outer periphery of the connecting portion.
　上記の態様によれば、止水壁は、止水被覆の内面と、全周に亘って密着することができるので、防水性を一層向上させることができる。 According to the above aspect, the water blocking wall can be in close contact with the inner surface of the water blocking coating over the entire circumference, so that the waterproof property can be further improved.
　芯線を構成する金属と、端子を構成する金属とが異なる場合、芯線とワイヤーバレルとの双方に亘って水が付着すると、芯線又はワイヤーバレルに電食が発生することが懸念される。上記の態様によれば、芯線とワイヤーバレルとは止水材によって確実に防水されるので、芯線又はワイヤーバレルが電食により溶解することを抑制できる。このため、前記芯線を構成する金属と、前記端子を構成する金属とが異なる時に特に有効である。 When the metal constituting the core wire is different from the metal constituting the terminal, there is a concern that when the water adheres to both the core wire and the wire barrel, electrolytic corrosion occurs on the core wire or the wire barrel. According to said aspect, since a core wire and a wire barrel are reliably waterproofed by a water stop material, it can suppress that a core wire or a wire barrel melt | dissolves by electrolytic corrosion. For this reason, it is particularly effective when the metal constituting the core wire is different from the metal constituting the terminal.
　前記芯線がアルミニウム又はアルミニウム合金からなる態様において特に有効である。 This is particularly effective in an embodiment in which the core wire is made of aluminum or an aluminum alloy.
　アルミニウム又はアルミニウム合金は比重が比較的に小さいので、電線を軽量化できる。一方、アルミニウム又はアルミニウム合金は比較的にイオン化傾向が高いので、電食が発生した場合に溶解しやすい。上記の態様によれば、芯線とワイヤーバレルとは止水被覆によって確実に止水されるので、芯線がアルミニウム又はアルミニウム合金からなる場合に特に有効である。 Aluminum or aluminum alloy has a relatively small specific gravity, so the weight of the wire can be reduced. On the other hand, since aluminum or aluminum alloy has a relatively high ionization tendency, it easily dissolves when electrolytic corrosion occurs. According to the above aspect, since the core wire and the wire barrel are reliably waterstop by water stop coating, it is particularly effective when the core wire is made of aluminum or an aluminum alloy.
　前記止水被覆の内周面には接着層または粘着層が形成されていることが好ましい。 It is preferable that an adhesive layer or an adhesive layer is formed on the inner peripheral surface of the water blocking coating.
　上記の態様によれば、止水被覆の内周面と、止水壁から絶縁被覆の端部に至るまでの領域とを隙間なく密着させることができる。 According to the above aspect, it is possible to the inner peripheral surface of the waterproofing coating, is brought into close contact without a gap and a region from the water-stop wall up to the end of the insulating coating.
　前記止水被覆が熱収縮チューブであることが好ましい。 It is preferable that the water blocking coating is a heat shrinkable tube.
　上記の態様によれば、加熱前の状態においては、熱収縮チューブの内径は比較的に大きいので、上記の領域の外周に容易に配置することができる。その後、加熱により収縮させることで、熱収縮チューブの内面を、止水壁及び絶縁被覆の端部と密着させることができる。このように、止水被覆として熱収縮チューブを用いることにより、止水壁から絶縁被覆の端部に至るまでの領域の外周に熱収縮チューブを配置する工程の作業効率を向上させることができる。 According to the above aspect, since the inner diameter of the heat-shrinkable tube is relatively large in the state before heating, it can be easily disposed on the outer periphery of the region. Thereafter, the inner surface of the heat-shrinkable tube can be brought into close contact with the water blocking wall and the end portion of the insulating coating by being shrunk by heating. Thus, by using a heat-shrinkable tube as the water-stop coating, it is possible to improve the work efficiency of the step of arranging the heat-shrink tube on the outer periphery of the region from the water blocking wall to the end of the insulating coating.
　前記止水被覆がゴム弾性を有する弾性チューブであることが好ましい。 It is preferable that the water blocking coating is an elastic tube having rubber elasticity.
　上記の態様によれば、弾性チューブを拡径させた状態で、この弾性チューブを、止水壁から絶縁被覆の端部に至るまでの領域の外周に配置し、その後、弾性チューブを復帰変形させる。すると、弾性チューブの内面は、止水壁及び絶縁被覆の端部と密着する。このように本態様によれば、簡易な工程により、弾性チューブを止水壁から絶縁被覆の端部に至るまでの領域に被覆できる。 According to said aspect, this elastic tube is arrange | positioned to the outer periphery of the area | region from a water stop wall to the edge part of an insulation coating in the state which expanded the diameter of the elastic tube, and it carries out a return deformation | transformation after that. . Then, the inner surface of the elastic tube is in close contact with the water blocking wall and the end of the insulating coating. As described above, according to this aspect, the elastic tube can be covered from the water blocking wall to the end portion of the insulating coating by a simple process.
（効果）
　本明細書に開示された技術によれば、コネクタ、端子付き電線、および端子の防水性を向上させることができる。 (effect)
According to the technique disclosed in this specification, the waterproofness of the connector, the electric wire with terminal, and the terminal can be improved.

Claims (13)

  1. 　芯線の外周を絶縁被覆で被覆してなる電線に端子が接続され、キャビティが形成されたハウジングの前記キャビティに前記端子が収容されたコネクタであって、
    　前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、
    　前記繋ぎ部に合成樹脂をモールド成形してなる止水壁が設けられ、前記止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられており、
    　前記電線における前記止水壁とは反対側に引き出された電線引出部が前記止水被覆に覆われることで、前記電線引出部の遊動が規制されているコネクタ。     A connector in which a terminal is connected to an electric wire formed by coating an outer periphery of a core wire with an insulating coating, and the terminal is accommodated in the cavity of a housing in which a cavity is formed,
    The terminal includes a connection portion connected to a conductive member, a wire barrel crimped to the core wire exposed from an end portion of the insulating coating, and a connecting portion connecting the connection portion and the wire barrel. Configured
    A water stop wall formed by molding a synthetic resin at the joint is provided, and the water stop wall and the end of the insulating coating are in close contact with the outer surface of the water stop wall and the outer surface of the end of the insulating cover. A cylindrical water-stop coating covering the core wire is provided between
    A connector in which loosening of the wire lead-out portion is regulated by covering the water lead-out portion of the electric wire on the opposite side of the water stop wall with the water stop coating.
  2. 　前記電線引出部が更に前記キャビティに収容されることで、前記電線引出部の遊動が規制されている請求の範囲第１項に記載のコネクタ。 2. The connector according to claim 1, wherein the wire lead-out portion is further accommodated in the cavity so that the movement of the wire lead-out portion is regulated.
  3. 　前記止水被覆における前記キャビティに収容された部分の外径が前記キャビティの内径と同じに設定されることで前記電線引出部の遊動が規制されている請求の範囲第２項に記載のコネクタ。 The connector according to claim 2, wherein the outer diameter of the portion accommodated in the cavity in the waterproof coating is set to be the same as the inner diameter of the cavity, so that the loosening of the wire lead-out portion is restricted.
  4. 　前記止水被覆における前記電線引出部を覆う小径部の外径は、前記キャビティの内径と同じに設定され、前記止水被覆における前記絶縁被覆の端部を覆う大径部の外径は、前記小径部の外径よりも大きく設定され、かつ前記大径部は、前記キャビティの外部に配置されている請求の範囲第１項ないし請求の範囲第３項のいずれか一項に記載のコネクタ。 The outer diameter of the small-diameter portion that covers the wire lead-out portion in the waterproof coating is set to be the same as the inner diameter of the cavity, and the outer diameter of the large-diameter portion that covers the end of the insulating coating in the waterproof coating is the 4. The connector according to claim 1, wherein the connector is set to be larger than an outer diameter of the small-diameter portion, and the large-diameter portion is disposed outside the cavity. 5.
  5. 　前記止水被覆における前記絶縁被覆の端部を覆う大径部の外径は、前記キャビティの内径と同じに設定され、かつ前記大径部は、前記キャビティに収容されている請求の範囲第１項ないし請求の範囲第３項のいずれか一項に記載のコネクタ。 The outer diameter of the large-diameter portion that covers the end portion of the insulating coating in the waterproof coating is set to be the same as the inner diameter of the cavity, and the large-diameter portion is accommodated in the cavity. The connector according to any one of claims 3 to 4.
  6. 　前記止水壁は、更に、前記繋ぎ部の外周を全周に亘って包囲するように形成されている請求の範囲第１項ないし請求の範囲第５項のいずれか一項に記載のコネクタ。 The connector according to any one of claims 1 to 5, wherein the water blocking wall is further formed so as to surround the entire outer periphery of the connecting portion.
  7. 　前記芯線を構成する金属と、前記端子を構成する金属とが異なる請求の範囲第１項ないし請求の範囲第６項のいずれか一項に記載のコネクタ。 The connector according to any one of claims 1 to 6, wherein a metal constituting the core wire is different from a metal constituting the terminal.
  8. 　前記芯線がアルミニウム又はアルミニウム合金からなる請求の範囲第１項ないし請求の範囲第７項のいずれか一項に記載のコネクタ。 The connector according to any one of claims 1 to 7, wherein the core wire is made of aluminum or an aluminum alloy.
  9. 　前記止水被覆の内周面には接着層又は粘着層が形成されている請求の範囲第１項ないし請求の範囲第８項のいずれか一項に記載のコネクタ。 The connector according to any one of claims 1 to 8, wherein an adhesive layer or an adhesive layer is formed on an inner peripheral surface of the water blocking coating.
  10. 　前記止水被覆が熱収縮チューブである請求の範囲第１項ないし請求の範囲第９項のいずれか一項に記載のコネクタ。 The connector according to any one of claims 1 to 9, wherein the water blocking coating is a heat shrinkable tube.
  11. 　前記止水被覆がゴム弾性を有する弾性チューブである請求の範囲第１項ないし請求の範囲第９項のいずれか一項に記載のコネクタ。 The connector according to any one of claims 1 to 9, wherein the waterproof coating is an elastic tube having rubber elasticity.
  12. 　芯線の外周を絶縁被覆で被覆してなる電線から露出した前記芯線に端子が接続された端子付き電線であって、
    　前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、
    　前記繋ぎ部に合成樹脂をモールドしてなる止水壁が設けられ、前記止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられており、
    　前記電線における前記止水壁とは反対側に引き出された電線引出部が前記止水被覆に覆われることで、前記電線引出部の遊動が規制されている端子付き電線。     A terminal-attached electric wire in which a terminal is connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulation coating,
    The terminal includes a connection portion connected to a conductive member, a wire barrel crimped to the core wire exposed from an end portion of the insulating coating, and a connecting portion connecting the connection portion and the wire barrel. Configured
    A water blocking wall formed by molding a synthetic resin on the joint is provided, and the water blocking wall and the end of the insulating coating are in close contact with the outer surface of the water blocking wall and the outer surface of the end of the insulating coating. A cylindrical water-stop coating covering the core wire is provided between
    The electric wire with a terminal in which the wire drawing portion drawn out to the opposite side of the water blocking wall in the electric wire is covered with the water blocking coating so that the floating of the wire drawing portion is regulated.
  13. 　芯線の外周を絶縁被覆で被覆してなる電線から露出する前記芯線に接続される端子であって、
    　前記端子が、導電部材と接続される接続部と、前記絶縁被覆の端部から露出された前記芯線に圧着されたワイヤーバレルと、前記接続部と前記ワイヤーバレルを接続する繋ぎ部と、を備えて構成され、
    　前記繋ぎ部に合成樹脂をモールドしてなる止水壁が設けられ、前記止水壁の外面と前記絶縁被覆の端部の外面とに密着して前記止水壁と前記絶縁被覆の端部との間に亘って前記芯線を覆う筒状の止水被覆が設けられるようになっており、
    　前記電線における前記止水壁とは反対側に引き出された電線引出部が前記止水被覆に覆われることで、前記電線引出部の遊動が規制される端子。     A terminal connected to the core wire exposed from an electric wire formed by coating the outer periphery of the core wire with an insulating coating,
    The terminal includes a connection portion connected to a conductive member, a wire barrel crimped to the core wire exposed from an end portion of the insulating coating, and a connecting portion connecting the connection portion and the wire barrel. Configured
    A water blocking wall formed by molding a synthetic resin on the joint is provided, and the water blocking wall and the end of the insulating coating are in close contact with the outer surface of the water blocking wall and the outer surface of the end of the insulating coating. A cylindrical water-stop coating that covers the core wire is provided between
    A terminal in which loosening of the wire lead-out portion is regulated by covering the water lead-out portion of the electric wire on the side opposite to the water stop wall with the water stop coating.
PCT/JP2011/068590 2010-09-08 2011-08-17 Connector, cable with terminal, and terminal WO2012032906A1 (en)

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JP5953591B2 (en) * 2012-04-05 2016-07-20 矢崎総業株式会社 Crimping the crimp terminal to the wire
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