WO2021059803A1 - Junction box- attached harness - Google Patents

Junction box- attached harness Download PDF

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Publication number
WO2021059803A1
WO2021059803A1 PCT/JP2020/031299 JP2020031299W WO2021059803A1 WO 2021059803 A1 WO2021059803 A1 WO 2021059803A1 JP 2020031299 W JP2020031299 W JP 2020031299W WO 2021059803 A1 WO2021059803 A1 WO 2021059803A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
core wire
junction box
external connection
connection portion
Prior art date
Application number
PCT/JP2020/031299
Other languages
French (fr)
Japanese (ja)
Inventor
英昭 伊藤
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 WO2021059803A1 publication Critical patent/WO2021059803A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • 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
    • H01R4/02—Soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box

Definitions

  • This disclosure relates to a harness with a junction box.
  • connection boxes such as junction boxes mounted on vehicles have a housing and a bus bar housed in the housing. Then, as described in Patent Document 1, for example, this bus bar is connected to the other electric connection box or the like by fitting a mating side connection terminal provided in another electric connection box or the like. There are times.
  • a connector provided at the end of an electric wire is often used as the connection terminal on the other side.
  • the bus bar and another electric junction box or the like are electrically connected via an electric wire.
  • the bus bar and the electric wire are electrically connected via the connector.
  • the connecting portion between the electric wire and the bus bar becomes large.
  • a larger connector is used.
  • the purpose of the present disclosure is to provide a harness with a junction box that can reduce the size of the connection portion between the bus bar and the electric wire.
  • the harness with a junction box of the present disclosure has an electric junction box having a housing and a bus bar housed in the housing, a conductive core wire, and an insulating coating covering the surface of the core wire, and the core wire is welded to the bus bar. It is a harness with a junction box equipped with a wire.
  • connection portion between the bus bar and the electric wire can be miniaturized.
  • FIG. 1 is a perspective view of a harness with a junction box in one embodiment.
  • FIG. 2 is a partial cross-sectional view of the harness with a junction box according to the embodiment.
  • FIG. 3 is a perspective view of the harness with a junction box in the modified example.
  • FIG. 4 is a perspective view of the harness with a junction box in the modified example.
  • FIG. 5 is a schematic view showing a connection portion between the bus bar and the electric wire in the modified example.
  • FIG. 6 is a perspective view of the harness with a junction box in the modified example.
  • the harness with junction box of the present disclosure is (1) An electric connection box having a housing and a bus bar housed in the housing, and an electric wire having a conductive core wire and an insulating coating covering the surface of the core wire and having the core wire welded to the bus bar. It is a harness with a junction box.
  • the bus bar and the electric wire are connected by welding, they can be connected without using a connector. Therefore, the connection portion between the bus bar and the electric wire can be miniaturized.
  • the bus bar has an external connection portion protruding to the outside of the housing, and the core wire is welded to the external connection portion.
  • the core wire can be welded to the external connection portion of the bus bar while the bus bar is held on the housing side. Therefore, the bus bar and the core wire can be easily welded. Further, since it is not necessary to perform a complicated process such as accommodating the bus bar with the welded core wire in the housing, the harness with the junction box can be easily manufactured.
  • the core wire is a flat flat conductor
  • the external connection portion has a flat plate shape
  • the core wire and the external connection portion are in the thickness direction of the core wire and the thickness of the external connection portion. It is preferable that the welding is performed in a state of being overlapped so as to coincide with the vertical direction.
  • connection portion between the bus bar and the electric wire can be further miniaturized.
  • an insulating insulating member that covers the outer periphery of the external connection portion and the end portion of the core wire on the side to be welded to the external connection portion that is exposed from the insulating coating. ..
  • the insulating member suppresses foreign matter from coming into contact with the external connection portion or the exposed core wire. Therefore, it is possible to prevent the external connection portion or the exposed core wire from being electrically connected to the foreign matter.
  • the housing has a covering portion that protrudes from the outer surface of the housing to the outside of the housing and covers the base end portion of the external connection portion, and the insulating member further covers the outer periphery of the covering portion. It is preferable to cover it.
  • the harness 10 with a junction box of the present embodiment shown in FIG. 1 is mounted on a vehicle such as an automobile.
  • the harness 10 with a junction box has an electrical junction box 20 and an electric wire 50 connected to the electrical junction box 20.
  • the harness 10 with a junction box is arranged in the vehicle interior, for example, on the cowl side.
  • the electric junction box 20 distributes the electric power supplied from the battery 11 to various devices mounted on the vehicle.
  • the electrical junction box 20 may also be referred to as a junction box, a fuse box, a relay box, or the like, but in the present specification, these are collectively referred to as an electrical junction box.
  • the electrical junction box 20 has a housing 21 and a bus bar 31 housed in the housing 21.
  • the bus bar is housed in the housing means that not only the entire bus bar is arranged inside the housing but also at least a part of the bus bar is arranged inside the housing. That is, the case where a part of the bus bar is located outside the housing is also included.
  • the housing 21 is made of an insulating synthetic resin material.
  • the housing 21 has a box shape having a storage space 22 inside.
  • the housing 21 has an annular side wall portion 23, a bottom portion 24 that closes one end of the side wall portion 23, and a ceiling portion 25 that closes the other end of the side wall portion 23.
  • the inner space surrounded by the side wall portion 23, the bottom portion 24, and the ceiling portion 25 is the accommodation space 22.
  • the housing 21 is formed by assembling a case having a storage recess and a plurality of parts such as a lid for closing the opening of the case.
  • the side wall portion 23 is formed with a protruding hole 26, a first connection hole 27, and a second connection hole 28 that communicate with each other inside and outside the housing 21.
  • the protruding hole 26, the first connecting hole 27, and the second connecting hole 28 are arranged in a direction parallel to the bottom 24.
  • the circuit board 41 is housed inside the housing 21.
  • the circuit board 41 is arranged in the accommodation space 22 so as to be parallel to the bottom portion 24. However, the circuit board 41 does not have to be exactly parallel to the bottom portion 24, and may be inclined with respect to the bottom portion 24.
  • Various electronic components are assembled on the circuit board 41.
  • a first connector 42 exposed from the first connection hole 27 to the outside of the housing 21 and a second connector 43 exposed to the outside of the housing 21 from the second connection hole 28 are electrically formed. It is connected.
  • the first connector 42 and the second connector 43 are fitted with connectors provided in a device mounted on a vehicle, another electric junction box, or the like.
  • the bus bar 31 is arranged in the accommodation space 22.
  • the bus bar 31 is formed by pressing a conductive metal plate material.
  • the bus bar 31 is made of a copper alloy.
  • the bus bar 31 has a substantially flat plate shape.
  • the bus bar 31 is arranged with respect to the circuit board 41 so that the thickness direction of the bus bar 31 coincides with the thickness direction of the circuit board 41.
  • the fact that the thickness direction of the bus bar 31 and the thickness direction of the circuit board 41 match is not limited to the case where the two directions exactly match, and the thickness of the circuit board 41 with respect to the thickness direction of the bus bar 31. Including the case where the direction is slightly inclined.
  • the thickness direction of the bus bar 31 and the thickness direction of the circuit board 41 correspond to the vertical direction of the paper surface in FIG.
  • the bus bar 31 is directly or indirectly held by the housing 21. Further, the bus bar 31 is electrically connected to the circuit board 41.
  • the bus bar 31 is electrically connected to the first connector 42 and the second connector 43 via the circuit board 41.
  • the bus bar 31 has an external connection portion 32 that protrudes from the protruding hole 26 to the outside of the housing 21.
  • the external connection portion 32 is arranged outside the housing 21. That is, in the bus bar 31, the portion arranged outside the housing 21 is the external connection portion 32.
  • the external connection portion 32 has a substantially quadrangular flat plate shape.
  • the external connection portion 32 is arranged so that the thickness direction of the external connection portion 32 coincides with the thickness direction of the bottom portion 24.
  • the fact that the thickness direction of the external connection portion 32 and the thickness direction of the bottom portion 24 match is not limited to the case where the two directions exactly match, and the external connection portion 32 of the external connection portion 32 with respect to the thickness direction of the bottom portion 24. Including the case where the thickness direction is slightly inclined. Further, the thickness direction of the external connection portion 32 and the thickness direction of the bottom portion 24 correspond to the vertical direction of the paper surface in FIG. Then, in the present embodiment, the thickness direction of the bottom portion 24 is the same as the thickness direction of the circuit board 41.
  • the protruding hole 26 has a shape corresponding to the outer shape of the base end of the external connecting portion 32. Specifically, the protruding hole 26 has a rectangular shape in which the shape seen from the penetrating direction of the protruding hole 26 is substantially equal to the outer shape of the base end of the external connecting portion 32. The base end portion of the external connection portion 32 is supported by the inner peripheral surface of the protruding hole 26.
  • the electric wire 50 has a core wire 51 and an insulating coating 52 that covers the surface of the core wire 51.
  • the electric wire 50 is a single wire in which the core wire 51 is composed of one conductor.
  • the core wire 51 is a flat conductor having a flat rectangular shape with a cross section orthogonal to the longitudinal direction.
  • the core wire 51 is made of aluminum.
  • the insulating coating 52 is removed from the first end 50a, which is one end of the electric wire 50 on the side connected to the bus bar 31, and the core wire 51 is exposed.
  • the portion of the first end portion 50a where the core wire 51 is exposed is referred to as an exposed portion 53.
  • a connector 54 for connecting to the battery 11 is provided at the other end of the electric wire 50 and at the second end 50b opposite to the first end 50a.
  • the electric wire 50 is electrically connected to a battery terminal (not shown) which is electrically connected to a battery post (not shown) provided in the battery 11 via a connector 54.
  • the electric wire 50 may not be provided with the connector 54 and may be electrically connected to the battery post via the battery terminal by directly connecting the second end portion 50b to the battery terminal.
  • connection part between bus bar and electric wire The bus bar 31 and the electric wire 50 are connected by welding.
  • the core wire 51 is welded to the external connection portion 32 at the first end portion 50a.
  • the exposed portion 53 is externally connected by, for example, ultrasonic welding. It is welded to the portion 32.
  • the thickness direction of the core wire 51 and the thickness direction of the external connection portion 32 correspond to the vertical direction of the paper surface.
  • the electric wire 50 is electrically and mechanically connected to the bus bar 31.
  • the exposed portion 53 and the external connection portion 32 may be plated with nickel or the like.
  • the outer circumference of the connecting portion between the core wire 51 and the external connecting portion 32 is covered with an insulating insulating member 61.
  • the insulating member 61 is illustrated by a two-dot chain line.
  • the insulating member 61 of the present embodiment is a heat-shrinkable tube made of an insulating resin material.
  • the insulating member 61 covers the outer circumference of the exposed portion 53 and the external connecting portion 32 of the core wire 51. Specifically, the insulating member 61 covers the range from the end of the insulating coating 52 on the first end 50a side to the base end of the external connecting portion 32. Therefore, the entire external connection portion 32 from the tip end to the base end is located inside the insulating member 61. Further, the entire exposed portion 53 is located inside the insulating member 61.
  • the heat-shrinkable insulating member 61 is externally inserted into the electric wire 50 before the core wire 51 is welded to the external connection portion 32. Then, after the core wire 51 is welded to the external connection portion 32, the insulating member 61 is moved to a position that covers the connection portion between the core wire 51 and the external connection portion 32. After that, the insulating member 61 shrinks due to the heat treatment and comes into close contact with the external connecting portion 32 and the exposed portion 53.
  • the harness 10 with a junction box has an electric junction box 20 having a housing 21 and a bus bar 31 housed in the housing 21, and a conductive core wire 51 and an insulating coating 52 covering the surfaces of the core wire 51.
  • 51 includes an electric wire 50 welded to the bus bar 31.
  • the bus bar 31 and the electric wire 50 are connected by welding, they can be connected without using a connector. Therefore, the connection portion between the bus bar 31 and the electric wire 50 can be miniaturized. As a result, the harness 10 with a junction box can be miniaturized, and the space occupied by the harness 10 with a junction box in the vehicle interior can be reduced. Therefore, it is possible to increase the degree of freedom in arranging the harness 10 with the junction box in the vehicle interior.
  • the bus bar 31 has an external connection portion 32 protruding to the outside of the housing 21.
  • the core wire 51 is welded to the external connection portion 32.
  • the core wire 51 can be welded to the external connection portion 32 of the bus bar 31 while the bus bar 31 is held on the housing 21 side. Therefore, the bus bar 31 and the core wire 51 can be easily welded. Further, the electric wire 50 can be connected to the bus bar 31 provided in the electric junction box 20 of the finished product. Therefore, since it is not necessary to perform a complicated process such as accommodating the bus bar 31 to which the core wire 51 is welded in the housing 21, the harness 10 with a junction box can be easily manufactured.
  • the core wire 51 is a flat flat conductor. Further, the external connection portion 32 has a flat plate shape. The core wire 51 and the external connection portion 32 are welded in a state of being overlapped so that the thickness direction of the core wire 51 and the thickness direction of the external connection portion 32 coincide with each other.
  • connection portion between the bus bar 31 and the electric wire 50 can be further miniaturized.
  • the harness 10 with a junction box is an insulating insulation that covers the outer periphery of the external connection portion 32 and the end portion of the core wire 51 that is welded to the external connection portion 32 and is exposed from the insulating coating 52. It includes a member 61.
  • the insulating member 61 suppresses the contact of foreign matter with the exposed core wire 51, that is, the exposed portion 53 and the external connection portion 32. Therefore, it is possible to prevent the external connection portion 32 or the exposed portion 53 from being electrically connected to the foreign matter.
  • This embodiment can be implemented by changing as follows.
  • the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
  • the same components as those in the above embodiment or the components corresponding to the above embodiment may be designated by the same reference numerals and a part or all of the description thereof may be omitted.
  • the housing 21A may have a covering portion 29 that protrudes from the outer surface of the housing 21A to the outside of the housing 21A and covers the base end portion of the external connecting portion 32.
  • the insulating member 61 may be configured to further cover the outer periphery of the covering portion 29.
  • the covering portion 29 projects from the outer peripheral surface of the side wall portion 23 to the outside of the housing 21.
  • the covering portion 29 has a tubular shape extending from the outer peripheral edge portion of the outer opening of the protruding hole 26 (not shown) on the side wall portion 23.
  • the covering portion 29 covers the outer circumference of the base end portion of the external connecting portion 32 over the entire circumference.
  • the insulating member 61 further covers the outer circumference of the covering portion 29 in addition to the outer circumference of the exposed portion 53 and the external connecting portion 32. Specifically, the insulating member 61 covers the range from the end portion of the insulating coating 52 on the first end portion 50a side to the base end of the covering portion 29.
  • the insulating member 61 does not necessarily have to cover the covering portion 29 to the base end of the covering portion 29 as long as it covers at least the outer circumference of the tip portion of the covering portion 29 over the entire circumference. By doing so, it is possible to prevent the base end portion of the external connecting portion 32 from being exposed from the insulating member 61.
  • the insulating member 61 is a heat shrink tube.
  • the insulating member 61 is not limited to the heat-shrinkable tube, and may be any insulating member capable of covering the outer periphery of the external connecting portion 32 and the exposed portion 53.
  • the insulating member 61 may be a cover made of an insulating resin that is retrofitted to the connecting portion between the bus bar 31 and the electric wire 50.
  • the insulating member 61 may be made of an insulating synthetic resin material in which the external connecting portion 32 and the exposed portion 53 are embedded.
  • the insulating member 61 may be an insulating adhesive tape wound around the external connecting portion 32 and the exposed portion 53.
  • the shape of the core wire 51 is not limited to the shape of the above embodiment.
  • the core wire 51 may have various shapes such as a polygonal shape, an elliptical shape, and a circular shape in a cross section orthogonal to the longitudinal direction.
  • the core wire 51 may be a stranded wire composed of a plurality of conductive metal wires.
  • the core wire 51B of the electric wire 50B shown in FIGS. 4 and 5 has a circular cross-sectional shape orthogonal to the longitudinal direction.
  • the electric junction box 20 is shown by omitting the first connector 42 and the second connector 43.
  • the core wire 51B is divided into two in a direction perpendicular to the longitudinal direction of the core wire 51B.
  • the external connection portion 32 is sandwiched between the core wires 51B divided into two. In this state, the core wire 51B is welded to the external connection portion 32. Therefore, the core wire 51B is mechanically and electrically connected on both end faces in the thickness direction of the external connection portion 32. Therefore, in this way, the strength of the connection between the bus bar 31 and the electric wire 50B is increased.
  • the core wire 51 is made of aluminum.
  • the core wire 51 may be made of a material that is conductive and can be welded to the bus bar 31.
  • the core wire 51 may be made of an alloy containing aluminum, copper, an alloy containing copper, or the like.
  • the bus bar 31 is made of a copper alloy.
  • the bus bar 31 may be made of a material that is conductive and can be welded to the core wire 51.
  • the bus bar 31 may be made of aluminum, an alloy containing aluminum, copper, or the like.
  • the shape of the bus bar 31 is not limited to the shape of the above embodiment.
  • the external connection portion 32C provided in the bus bar 31C shown in FIG. 6 has a bent portion at the base end portion.
  • the portion of the external connection portion 32C on the distal end side of the bent portion is perpendicular to the portion of the external connection portion 32C on the proximal end side of the bent portion. It is bent.
  • the core wire 51 is welded to a portion of the external connection portion 32C on the tip side of the bent portion.
  • the bus bar 31 may have an external connection portion 32 having a trapezoidal flat plate shape. Further, the bus bar 31 may be configured not to include the external connection portion 32. In this case, the welded connection portion between the core wire 51 and the bus bar 31 is arranged inside the housing 21. In this case, the insulating member 61 can be omitted.
  • the core wire 51 is welded to the bus bar 31 by ultrasonic welding.
  • the method of welding the core wire 51 to the bus bar 31 is not limited to this, and a known welding method can be used.
  • the core wire 51 may be connected to the bus bar 31 by resistance welding.
  • the electrical junction box 20 has two connectors, a first connector 42 and a second connector 43.
  • the number of connectors provided in the electrical junction box 20 may be one, or three or more.
  • the housing 21 may be provided with connection holes for exposing the connectors to the outside of the housing 21.
  • the bus bar 31 is electrically connected to the first connector 42 and the second connector 43 via the circuit board 41.
  • the bus bar 31 may be directly connected to the first connector 42 and the second connector 43 without going through the circuit board 41.
  • the electrical junction box 20 may not include the first connector 42 and the second connector 43.
  • the bus bar 31 has a connection terminal extending so as to be exposed from the housing 21. Then, a connector provided in a device mounted on the vehicle, another electric connection box, or the like is fitted into the connection terminal.
  • the shape of the housing 21 is not limited to the shape of the above embodiment as long as it can accommodate the bus bar 31 inside.
  • the connector 54 is connected to the battery 11.
  • the connector 54 does not necessarily have to be connected to the battery 11.
  • the connector 54 provided in the harness 10 with a junction box and the connector 54 provided in the harness 10 with a junction box are fitted together. It may be configured to connect.
  • the connector 54 does not necessarily have to be provided at the second end 50b of the electric wire 50.
  • the harness with a junction box includes two electric junction boxes 20
  • the first end portion 50a of the electric wire 50 is welded to the bus bar 31 provided in one of the electric junction boxes 20, and the other electric junction box 20.
  • the second end portion 50b of the electric wire 50 may be welded to the bus bar 31 provided in the 20.
  • the harness 10 with a junction box may be arranged in a place other than the cowl side in the vehicle interior. Further, the harness 10 with a junction box can be arranged not only in the vehicle interior of the vehicle but also in the engine room. In this case, it is preferable to provide a waterproof structure for preventing liquids such as water from adhering to the external connection portion 32 and the exposed portion 53. Further, it is preferable to provide a water blocking structure for preventing liquid such as water from entering the inside of the housing 21 from the protruding hole 26, the first connection hole 27 and the second connection hole 28.
  • the harness 10 with a junction box of the present disclosure may be referred to as an assembly including an electrical junction box 20 and an electric wire 50.
  • Some implementation examples of the present disclosure are directed to an assembly (10) comprising an electrical junction box (20) and an electric wire (50).
  • the electrical junction box (20) may have a housing (21) and a bus bar (31) that is at least partially housed in the housing (21).
  • the electric wire (50) may have a conductive core wire (51; 51B) and an insulating coating (52) covering the core wire (51; 51B).
  • the core wire (51; 51B) of the electric wire (50) and the bus bar (31) may be fixedly and electrically connected in advance by welding.
  • the electric wire (50) and the bus bar (31) are fixedly and electrically connected by welding in advance, so that the user of the assembly (10) (for example, the vehicle manufacturer) Can eliminate the work of connecting the electric wire (50) and the bus bar (31) on-site, for example, on-site welding at a vehicle manufacturer's manufacturing plant.
  • the conductive core wire (51) may have a tip metal plate portion (53) that is not covered by the insulating coating (52).
  • the tip metal plate portion (53) of the conductive core wire (51) and the bus bar (31) may be overlapped with a predetermined overlapping length and a predetermined overlapping width.
  • the tip metal plate portion (53) and the bus bar (31) may form a welding interface.
  • the conductive core wire (51B) may have a tip metal rod portion (53B) that is not covered by the insulating coating (52).
  • the tip metal rod portion (53B) of the conductive core wire (51B) may be separated from each other by a notch slit extending in the length direction from the tip end of the conductive core wire (51B) over a predetermined cutting depth.
  • the bus bar (31) is made of the tip metal so that the tip metal rod portion (53B) of the conductive core wire (51) and the bus bar (31) overlap with each other with a predetermined overlap length and a predetermined overlap width. It may be inserted into the notch slit of the rod portion (53B).
  • the conductive core wire (51) and the bus bar (31) may form a welding interface in the notch slit of the tip metal rod portion (53B).
  • the bus bar (31) forms a welding interface with the conductive core wire (51) in the notch slit of the tip metal rod portion (53B), so that the conductive core wire (51)
  • the electric conduction area between the conductive core wire (51) and the bus bar (31) can be secured without excessively increasing the height of the connecting portion between the bus bar (31) and the bus bar (31), and heat is generated in a large current application. It is advantageous to suppress.
  • the innermost portion of the notch slit of the tip metal rod portion (53B) is the insulating coating (52). It may match or align with the end face.
  • the conductor cross-sectional area of the tip metal rod portion (53B) with the notch slit closed is equal to the conductor cross-sectional area of the conductive core wire (51). ..
  • the predetermined depth of cut of the tip metal rod portion (53B) may be shorter than the total length of the conductive core wire (51B).
  • the predetermined depth of cut of the tip metal rod portion (53B) is the length of the tip metal rod portion (53B) of the conductive core wire (51B). May match or substantially match.
  • the welding interface may have a welding length smaller than the predetermined overlap length and / or a welding width shorter than the predetermined overlap width. ..
  • the welding interface has a welding length and a welding width that match or substantially match the predetermined overlap length and the predetermined overlap width, respectively. Good.
  • the electric wire (50) may be a power supply line configured to supply electric power from the power source (11) to the bus bar (31).
  • the electrical junction box (20) is A bus bar through hole (26) for projecting an external connection portion (32), which may be a tip portion of the bus bar (31), outward from the electrical connection box (20).
  • the busbar through hole (26) and the one or more connector through holes (27, 28) may be opened side by side to one common surface of the electrical connection box (20).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connection Or Junction Boxes (AREA)
  • Insulated Conductors (AREA)

Abstract

The present disclosure provides a junction box-attached harness in which the connection portion between a bus bar and an electric wire can be reduced in size. The junction box-attached harness 10 is provided with: an electrical junction box 20 having a chassis 21 and a bus bar 31 housed in the chassis 21; and an electric wire 50 having a conductive core wire 51 and an insulating covering 52 that covers the surface of the core wire 51, wherein the core wire 51 is welded to the bus bar 31.

Description

接続箱付きハーネスHarness with junction box
　本開示は、接続箱付きハーネスに関する。 This disclosure relates to a harness with a junction box.
　従来、車両に搭載されるジャンクションボックス等の電気接続箱には、筐体及び同筐体に収容されたバスバーを有するものがある。そして、このバスバーは、例えば特許文献１に記載されているように、別の電気接続箱等に設けられた相手側接続端子が嵌合されることにより、当該別の電気接続箱等と接続されることがある。 Conventionally, some electrical connection boxes such as junction boxes mounted on vehicles have a housing and a bus bar housed in the housing. Then, as described in Patent Document 1, for example, this bus bar is connected to the other electric connection box or the like by fitting a mating side connection terminal provided in another electric connection box or the like. There are times.
特開２００６－２８８１１７号公報Japanese Unexamined Patent Publication No. 2006-288117
　一般的に、相手側接続端子としては、電線の端部に設けられたコネクタが使用されることが多い。このコネクタをバスバーに嵌合することにより、電線を介してバスバーと別の電気接続箱等が電気的に接続されることになる。この場合、コネクタを介してバスバーと電線とが電気的に接続される。しかしながら、コネクタを介してバスバーと電線とを電気的に接続する場合、電線とバスバーとの接続部分が大型化されてしまう。例えば１２０Ａといった大電流が流れる部分において、コネクタを介してバスバーと電線とを接続する場合には、コネクタもより大きなものが用いられることになる。車両において、電気接続箱及び同電気接続箱が有するバスバーに接続される電線を配置するスペースには限りがあるため、バスバーと電線との接続部分を小型化することが望ましい。 Generally, a connector provided at the end of an electric wire is often used as the connection terminal on the other side. By fitting this connector to the bus bar, the bus bar and another electric junction box or the like are electrically connected via an electric wire. In this case, the bus bar and the electric wire are electrically connected via the connector. However, when the bus bar and the electric wire are electrically connected via the connector, the connecting portion between the electric wire and the bus bar becomes large. For example, when connecting a bus bar and an electric wire via a connector in a portion where a large current flows such as 120A, a larger connector is used. In a vehicle, since the space for arranging the electric junction box and the electric wire connected to the bus bar of the electric junction box is limited, it is desirable to reduce the size of the connection portion between the bus bar and the electric wire.
　本開示の目的は、バスバーと電線との接続部分を小型化できる接続箱付きハーネスを提供することにある。 The purpose of the present disclosure is to provide a harness with a junction box that can reduce the size of the connection portion between the bus bar and the electric wire.
　本開示の接続箱付きハーネスは、筐体及び前記筐体に収容されたバスバーを有する電気接続箱と、導電性の芯線及び前記芯線の表面を覆う絶縁被膜を有し前記芯線が前記バスバーに溶接された電線とを備えた接続箱付きハーネスである。 The harness with a junction box of the present disclosure has an electric junction box having a housing and a bus bar housed in the housing, a conductive core wire, and an insulating coating covering the surface of the core wire, and the core wire is welded to the bus bar. It is a harness with a junction box equipped with a wire.
　本開示の接続箱付きハーネスによれば、バスバーと電線との接続部分を小型化できる。 According to the harness with a junction box of the present disclosure, the connection portion between the bus bar and the electric wire can be miniaturized.
図１は、一実施形態における接続箱付きハーネスの斜視図である。FIG. 1 is a perspective view of a harness with a junction box in one embodiment. 図２は、一実施形態における接続箱付きハーネスの一部断面図である。FIG. 2 is a partial cross-sectional view of the harness with a junction box according to the embodiment. 図３は、変更例における接続箱付きハーネスの斜視図である。FIG. 3 is a perspective view of the harness with a junction box in the modified example. 図４は、変更例における接続箱付きハーネスの斜視図である。FIG. 4 is a perspective view of the harness with a junction box in the modified example. 図５は、変更例におけるバスバーと電線との接続部分を示す模式図である。FIG. 5 is a schematic view showing a connection portion between the bus bar and the electric wire in the modified example. 図６は、変更例における接続箱付きハーネスの斜視図である。FIG. 6 is a perspective view of the harness with a junction box in the modified example.
　［本開示の実施形態の説明］
　最初に本開示の実施態様を列記して説明する。 [Explanation of Embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.
　本開示の接続箱付きハーネスは、
　（１）筐体及び前記筐体に収容されたバスバーを有する電気接続箱と、導電性の芯線及び前記芯線の表面を覆う絶縁被膜を有し前記芯線が前記バスバーに溶接された電線とを備えた接続箱付きハーネスである。 The harness with junction box of the present disclosure is
(1) An electric connection box having a housing and a bus bar housed in the housing, and an electric wire having a conductive core wire and an insulating coating covering the surface of the core wire and having the core wire welded to the bus bar. It is a harness with a junction box.
　上記態様によれば、バスバーと電線とは溶接により接続されているため、コネクタを使用することなく接続することができる。従って、バスバーと電線との接続部分を小型化することができる。 According to the above aspect, since the bus bar and the electric wire are connected by welding, they can be connected without using a connector. Therefore, the connection portion between the bus bar and the electric wire can be miniaturized.
　（２）前記バスバーは、前記筐体の外部に突出した外部接続部を有し、前記芯線は、前記外部接続部に溶接されていることが好ましい。 (2) It is preferable that the bus bar has an external connection portion protruding to the outside of the housing, and the core wire is welded to the external connection portion.
　上記態様によれば、バスバーが筐体側に保持された状態で、芯線をバスバーの外部接続部に溶接できる。従って、バスバーと芯線との溶接を容易に行うことができる。また、芯線が溶接されたバスバーを筐体に収容する等の煩雑な工程を行わなくてもよいため、接続箱付きハーネスを容易に製造できる。 According to the above aspect, the core wire can be welded to the external connection portion of the bus bar while the bus bar is held on the housing side. Therefore, the bus bar and the core wire can be easily welded. Further, since it is not necessary to perform a complicated process such as accommodating the bus bar with the welded core wire in the housing, the harness with the junction box can be easily manufactured.
　（３）前記芯線は、扁平な平型導体であり、前記外部接続部は平板状をなしており、前記芯線と前記外部接続部とは、前記芯線の厚さ方向と前記外部接続部の厚さ方向とが一致するように重ね合わされた状態で溶接されていることが好ましい。 (3) The core wire is a flat flat conductor, the external connection portion has a flat plate shape, and the core wire and the external connection portion are in the thickness direction of the core wire and the thickness of the external connection portion. It is preferable that the welding is performed in a state of being overlapped so as to coincide with the vertical direction.
　上記態様によれば、バスバーと電線との接続部分をより小型化することができる。 According to the above aspect, the connection portion between the bus bar and the electric wire can be further miniaturized.
　（４）前記芯線における前記外部接続部に溶接される側の端部であって前記絶縁被膜から露出した部分と、前記外部接続部との外周を覆う絶縁性の絶縁部材を備えたことが好ましい。 (4) It is preferable to provide an insulating insulating member that covers the outer periphery of the external connection portion and the end portion of the core wire on the side to be welded to the external connection portion that is exposed from the insulating coating. ..
　上記態様によれば、外部接続部や露出した芯線に異物が接触することが絶縁部材によって抑制される。従って、外部接続部や露出した芯線と当該異物とが導通されることが抑制される。 According to the above aspect, the insulating member suppresses foreign matter from coming into contact with the external connection portion or the exposed core wire. Therefore, it is possible to prevent the external connection portion or the exposed core wire from being electrically connected to the foreign matter.
　（５）前記筐体は、前記筐体の外表面から前記筐体の外部に突出し前記外部接続部の基端部を覆う被覆部を有し、前記絶縁部材は、前記被覆部の外周を更に覆うことが好ましい。 (5) The housing has a covering portion that protrudes from the outer surface of the housing to the outside of the housing and covers the base end portion of the external connection portion, and the insulating member further covers the outer periphery of the covering portion. It is preferable to cover it.
　上記態様によれば、外部接続部の基端部が絶縁部材から露出することを抑制できる。 According to the above aspect, it is possible to prevent the base end portion of the external connection portion from being exposed from the insulating member.
　［本開示の実施形態の詳細］
　本開示の接続箱付きハーネスの具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。 [Details of Embodiments of the present disclosure]
A specific example of the harness with a junction box of the present disclosure will be described below with reference to the drawings. It should be noted that the present invention is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
　以下、接続箱付きハーネスの一実施形態について説明する。 Hereinafter, an embodiment of a harness with a junction box will be described.
　図１に示す本実施形態の接続箱付きハーネス１０は、自動車等の車両に搭載されるものである。接続箱付きハーネス１０は、電気接続箱２０と、電気接続箱２０に接続された電線５０とを有する。接続箱付きハーネス１０は、車室内において、例えばカウルサイドに配置される。 The harness 10 with a junction box of the present embodiment shown in FIG. 1 is mounted on a vehicle such as an automobile. The harness 10 with a junction box has an electrical junction box 20 and an electric wire 50 connected to the electrical junction box 20. The harness 10 with a junction box is arranged in the vehicle interior, for example, on the cowl side.
　［電気接続箱の構成］
　電気接続箱２０は、バッテリ１１から供給された電力を車両に搭載された各種機器に分配するものである。なお、電気接続箱２０は、ジャンクションボックス、ヒューズボックス、リレーボックスなどとも呼ばれる場合があるが、本明細書では、これらを総称して電気接続箱と呼ぶ。 [Configuration of electrical junction box]
The electric junction box 20 distributes the electric power supplied from the battery 11 to various devices mounted on the vehicle. The electrical junction box 20 may also be referred to as a junction box, a fuse box, a relay box, or the like, but in the present specification, these are collectively referred to as an electrical junction box.
　図１及び図２に示すように、電気接続箱２０は、筐体２１と、筐体２１に収容されたバスバー３１とを有する。なお、本明細書において、「バスバーが筐体に収容される」とは、バスバーの全体が筐体の内部に配置される場合のみでなく、バスバーの少なくとも一部が筐体の内部に配置される場合、即ちバスバーの一部が筐体の外部に位置する場合も含まれるものとする。 As shown in FIGS. 1 and 2, the electrical junction box 20 has a housing 21 and a bus bar 31 housed in the housing 21. In the present specification, "the bus bar is housed in the housing" means that not only the entire bus bar is arranged inside the housing but also at least a part of the bus bar is arranged inside the housing. That is, the case where a part of the bus bar is located outside the housing is also included.
　筐体２１は、絶縁性の合成樹脂材料よりなる。筐体２１は、内部に収容空間２２を有する箱状をなしている。筐体２１は、環状をなす側壁部２３と、側壁部２３の一端を閉塞する底部２４と、側壁部２３の他端を閉塞する天井部２５とを有する。これら側壁部２３、底部２４及び天井部２５に囲まれた内側の空間が収容空間２２になっている。筐体２１は、例えば収容凹部を有するケースと当該ケースの開口部を閉塞する蓋等の複数の部品を組み付けて形成されている。 The housing 21 is made of an insulating synthetic resin material. The housing 21 has a box shape having a storage space 22 inside. The housing 21 has an annular side wall portion 23, a bottom portion 24 that closes one end of the side wall portion 23, and a ceiling portion 25 that closes the other end of the side wall portion 23. The inner space surrounded by the side wall portion 23, the bottom portion 24, and the ceiling portion 25 is the accommodation space 22. The housing 21 is formed by assembling a case having a storage recess and a plurality of parts such as a lid for closing the opening of the case.
　側壁部２３には、筐体２１の内外を連通する突出孔２６、第１接続孔２７及び第２接続孔２８が形成されている。突出孔２６、第１接続孔２７及び第２接続孔２８は、底部２４と平行な方向に並んでいる。 The side wall portion 23 is formed with a protruding hole 26, a first connection hole 27, and a second connection hole 28 that communicate with each other inside and outside the housing 21. The protruding hole 26, the first connecting hole 27, and the second connecting hole 28 are arranged in a direction parallel to the bottom 24.
　筐体２１の内部には、回路基板４１が収容されている。回路基板４１は、底部２４と平行をなすように収容空間２２に配置されている。但し、回路基板４１は、底部２４と厳密に平行をなしていなくてもよく、底部２４に対して傾斜していてもよい。回路基板４１には、種々の電子部品が組み付けられている。また、回路基板４１には、第１接続孔２７から筐体２１の外部に露出する第１コネクタ４２、及び第２接続孔２８から筐体２１の外部に露出する第２コネクタ４３が電気的に接続されている。第１コネクタ４２及び第２コネクタ４３には、車両に搭載された機器や別の電気接続箱等に設けられたコネクタが嵌合される。 The circuit board 41 is housed inside the housing 21. The circuit board 41 is arranged in the accommodation space 22 so as to be parallel to the bottom portion 24. However, the circuit board 41 does not have to be exactly parallel to the bottom portion 24, and may be inclined with respect to the bottom portion 24. Various electronic components are assembled on the circuit board 41. Further, on the circuit board 41, a first connector 42 exposed from the first connection hole 27 to the outside of the housing 21 and a second connector 43 exposed to the outside of the housing 21 from the second connection hole 28 are electrically formed. It is connected. The first connector 42 and the second connector 43 are fitted with connectors provided in a device mounted on a vehicle, another electric junction box, or the like.
　バスバー３１は、収容空間２２に配置されている。バスバー３１は、導電性の金属板材にプレス加工を施して形成されている。本実施形態では、バスバー３１は銅合金よりなる。バスバー３１は、略平板状をなしている。バスバー３１は、同バスバー３１の厚さ方向が回路基板４１の厚さ方向と一致するように回路基板４１に対して配置されている。なお、バスバー３１の厚さ方向と回路基板４１の厚さ方向とが一致するとは、２つの方向が厳密に一致する場合に限らず、バスバー３１の厚さ方向に対して回路基板４１の厚さ方向が僅かに傾斜している場合も含む。また、バスバー３１の厚さ方向及び回路基板４１の厚さ方向は、図２において紙面垂直方向に該当する。バスバー３１は、直接もしくは間接的に筐体２１にて保持されている。また、バスバー３１は、回路基板４１に電気的に接続されている。そして、バスバー３１は、回路基板４１を介して第１コネクタ４２及び第２コネクタ４３と電気的に接続されている。 The bus bar 31 is arranged in the accommodation space 22. The bus bar 31 is formed by pressing a conductive metal plate material. In this embodiment, the bus bar 31 is made of a copper alloy. The bus bar 31 has a substantially flat plate shape. The bus bar 31 is arranged with respect to the circuit board 41 so that the thickness direction of the bus bar 31 coincides with the thickness direction of the circuit board 41. The fact that the thickness direction of the bus bar 31 and the thickness direction of the circuit board 41 match is not limited to the case where the two directions exactly match, and the thickness of the circuit board 41 with respect to the thickness direction of the bus bar 31. Including the case where the direction is slightly inclined. Further, the thickness direction of the bus bar 31 and the thickness direction of the circuit board 41 correspond to the vertical direction of the paper surface in FIG. The bus bar 31 is directly or indirectly held by the housing 21. Further, the bus bar 31 is electrically connected to the circuit board 41. The bus bar 31 is electrically connected to the first connector 42 and the second connector 43 via the circuit board 41.
　バスバー３１は、突出孔２６から筐体２１の外部に突出する外部接続部３２を有する。外部接続部３２は、筐体２１の外部に配置されている。即ち、バスバー３１において、筐体２１の外部に配置された部分が外部接続部３２である。外部接続部３２は、略四角形の平板状をなしている。外部接続部３２は、同外部接続部３２の厚さ方向が底部２４の厚さ方向と一致するように配置されている。なお、外部接続部３２の厚さ方向と底部２４の厚さ方向とが一致するとは、２つの方向が厳密に一致する場合に限らず、底部２４の厚さ方向に対して外部接続部３２の厚さ方向が僅かに傾斜している場合も含む。また、外部接続部３２の厚さ方向及び底部２４の厚さ方向は、図２において紙面垂直方向に該当する。そして、本実施形態では、底部２４の厚さ方向は、回路基板４１の厚さ方向に同じである。 The bus bar 31 has an external connection portion 32 that protrudes from the protruding hole 26 to the outside of the housing 21. The external connection portion 32 is arranged outside the housing 21. That is, in the bus bar 31, the portion arranged outside the housing 21 is the external connection portion 32. The external connection portion 32 has a substantially quadrangular flat plate shape. The external connection portion 32 is arranged so that the thickness direction of the external connection portion 32 coincides with the thickness direction of the bottom portion 24. The fact that the thickness direction of the external connection portion 32 and the thickness direction of the bottom portion 24 match is not limited to the case where the two directions exactly match, and the external connection portion 32 of the external connection portion 32 with respect to the thickness direction of the bottom portion 24. Including the case where the thickness direction is slightly inclined. Further, the thickness direction of the external connection portion 32 and the thickness direction of the bottom portion 24 correspond to the vertical direction of the paper surface in FIG. Then, in the present embodiment, the thickness direction of the bottom portion 24 is the same as the thickness direction of the circuit board 41.
　なお、本実施形態では、突出孔２６は、外部接続部３２の基端の外形に応じた形状をなしている。具体的には、突出孔２６は、同突出孔２６の貫通方向から見た形状が外部接続部３２の基端の外形と略等しい長方形状をなしている。そして、外部接続部３２の基端部は、突出孔２６の内周面に支持されている。 In the present embodiment, the protruding hole 26 has a shape corresponding to the outer shape of the base end of the external connecting portion 32. Specifically, the protruding hole 26 has a rectangular shape in which the shape seen from the penetrating direction of the protruding hole 26 is substantially equal to the outer shape of the base end of the external connecting portion 32. The base end portion of the external connection portion 32 is supported by the inner peripheral surface of the protruding hole 26.
　［電線の構成］
　電線５０は、芯線５１と、芯線５１の表面を覆う絶縁被膜５２とを有する。本実施形態では、電線５０は、芯線５１が１本の導体よりなる単線である。芯線５１は、長手方向と直交する断面の形状が扁平な長方形状をなす平型導体である。芯線５１はアルミニウムよりなる。電線５０においてバスバー３１に接続される側の一端部である第１端部５０ａは、絶縁被膜５２が除去されて芯線５１が露出している。第１端部５０ａにおいて芯線５１が露出した部分を露出部５３とする。また、電線５０の他端部であって第１端部５０ａと反対側の第２端部５０ｂには、バッテリ１１に接続するためのコネクタ５４が設けられている。電線５０は、バッテリ１１に設けられた図示しないバッテリポストと電気的に接続される図示しないバッテリ端子に、コネクタ５４を介して電気的に接続される。なお、電線５０は、コネクタ５４を備えず、第２端部５０ｂがバッテリ端子に直接接続されることにより、バッテリ端子を介してバッテリポストに電気的に接続されてもよい。 [Electric wire configuration]
The electric wire 50 has a core wire 51 and an insulating coating 52 that covers the surface of the core wire 51. In the present embodiment, the electric wire 50 is a single wire in which the core wire 51 is composed of one conductor. The core wire 51 is a flat conductor having a flat rectangular shape with a cross section orthogonal to the longitudinal direction. The core wire 51 is made of aluminum. The insulating coating 52 is removed from the first end 50a, which is one end of the electric wire 50 on the side connected to the bus bar 31, and the core wire 51 is exposed. The portion of the first end portion 50a where the core wire 51 is exposed is referred to as an exposed portion 53. Further, a connector 54 for connecting to the battery 11 is provided at the other end of the electric wire 50 and at the second end 50b opposite to the first end 50a. The electric wire 50 is electrically connected to a battery terminal (not shown) which is electrically connected to a battery post (not shown) provided in the battery 11 via a connector 54. The electric wire 50 may not be provided with the connector 54 and may be electrically connected to the battery post via the battery terminal by directly connecting the second end portion 50b to the battery terminal.
　［バスバーと電線との接続部分の構成］
　バスバー３１と電線５０とは溶接により接続されている。電線５０は、第１端部５０ａにおいて芯線５１が外部接続部３２に溶接されている。詳しくは、芯線５１の厚さ方向と外部接続部３２の厚さ方向とが一致するように露出部５３が外部接続部３２に重ね合わされた状態で、例えば超音波溶接により露出部５３が外部接続部３２に溶接されている。図２において、芯線５１の厚さ方向及び外部接続部３２の厚さ方向は、紙面垂直方向に該当する。これにより、電線５０は、電気的及び機械的にバスバー３１に接続されている。なお、芯線５１と外部接続部３２との間における接触電気抵抗値を低減するために、露出部５３及び外部接続部３２にニッケル等のめっきが施されていてもよい。 [Structure of connection part between bus bar and electric wire]
The bus bar 31 and the electric wire 50 are connected by welding. In the electric wire 50, the core wire 51 is welded to the external connection portion 32 at the first end portion 50a. Specifically, in a state where the exposed portion 53 is overlapped with the external connecting portion 32 so that the thickness direction of the core wire 51 and the thickness direction of the external connecting portion 32 coincide with each other, the exposed portion 53 is externally connected by, for example, ultrasonic welding. It is welded to the portion 32. In FIG. 2, the thickness direction of the core wire 51 and the thickness direction of the external connection portion 32 correspond to the vertical direction of the paper surface. As a result, the electric wire 50 is electrically and mechanically connected to the bus bar 31. In addition, in order to reduce the contact electrical resistance value between the core wire 51 and the external connection portion 32, the exposed portion 53 and the external connection portion 32 may be plated with nickel or the like.
　芯線５１と外部接続部３２との接続部分は、外周が絶縁性の絶縁部材６１にて覆われている。なお、図１及び図２では、絶縁部材６１を二点鎖線で図示している。本実施形態の絶縁部材６１は、絶縁性の樹脂材料よりなる熱収縮チューブである。絶縁部材６１は、芯線５１における露出部５３と外部接続部３２との外周を覆っている。具体的には、絶縁部材６１は、第１端部５０ａ側の絶縁被膜５２の端部から外部接続部３２の基端までの範囲を覆っている。このため、外部接続部３２は、先端から基端までの全体が絶縁部材６１の内側に位置する。また、露出部５３の全体が絶縁部材６１の内側に位置する。 The outer circumference of the connecting portion between the core wire 51 and the external connecting portion 32 is covered with an insulating insulating member 61. In addition, in FIG. 1 and FIG. 2, the insulating member 61 is illustrated by a two-dot chain line. The insulating member 61 of the present embodiment is a heat-shrinkable tube made of an insulating resin material. The insulating member 61 covers the outer circumference of the exposed portion 53 and the external connecting portion 32 of the core wire 51. Specifically, the insulating member 61 covers the range from the end of the insulating coating 52 on the first end 50a side to the base end of the external connecting portion 32. Therefore, the entire external connection portion 32 from the tip end to the base end is located inside the insulating member 61. Further, the entire exposed portion 53 is located inside the insulating member 61.
　熱収縮チューブである絶縁部材６１は、芯線５１を外部接続部３２に溶接する前に電線５０に外挿される。そして、絶縁部材６１は、芯線５１を外部接続部３２に溶接した後に、芯線５１と外部接続部３２との接続部分を覆う位置に移動される。その後、絶縁部材６１は、熱処理が施されることにより収縮して外部接続部３２及び露出部５３に密着する。 The heat-shrinkable insulating member 61 is externally inserted into the electric wire 50 before the core wire 51 is welded to the external connection portion 32. Then, after the core wire 51 is welded to the external connection portion 32, the insulating member 61 is moved to a position that covers the connection portion between the core wire 51 and the external connection portion 32. After that, the insulating member 61 shrinks due to the heat treatment and comes into close contact with the external connecting portion 32 and the exposed portion 53.
　本実施形態の作用及び効果について説明する。 The operation and effect of this embodiment will be described.
　（１）接続箱付きハーネス１０は、筐体２１及び筐体２１に収容されたバスバー３１を有する電気接続箱２０と、導電性の芯線５１及び芯線５１の表面を覆う絶縁被膜５２を有し芯線５１がバスバー３１に溶接された電線５０とを備えている。 (1) The harness 10 with a junction box has an electric junction box 20 having a housing 21 and a bus bar 31 housed in the housing 21, and a conductive core wire 51 and an insulating coating 52 covering the surfaces of the core wire 51. 51 includes an electric wire 50 welded to the bus bar 31.
　上記態様によれば、バスバー３１と電線５０とは溶接により接続されているため、コネクタを使用することなく接続することができる。従って、バスバー３１と電線５０との接続部分を小型化することができる。その結果、接続箱付きハーネス１０を小型化することができ、車室内において接続箱付きハーネス１０が占有するスペースを小さくすることができる。よって、車室内における接続箱付きハーネス１０の配置場所の自由度を増すことができる。 According to the above aspect, since the bus bar 31 and the electric wire 50 are connected by welding, they can be connected without using a connector. Therefore, the connection portion between the bus bar 31 and the electric wire 50 can be miniaturized. As a result, the harness 10 with a junction box can be miniaturized, and the space occupied by the harness 10 with a junction box in the vehicle interior can be reduced. Therefore, it is possible to increase the degree of freedom in arranging the harness 10 with the junction box in the vehicle interior.
　（２）バスバー３１は、筐体２１の外部に突出した外部接続部３２を有する。芯線５１は、外部接続部３２に溶接されている。 (2) The bus bar 31 has an external connection portion 32 protruding to the outside of the housing 21. The core wire 51 is welded to the external connection portion 32.
　上記態様によれば、バスバー３１が筐体２１側に保持された状態で、芯線５１をバスバー３１の外部接続部３２に溶接できる。従って、バスバー３１と芯線５１との溶接を容易に行うことができる。また、完成品の電気接続箱２０に備えられるバスバー３１に、電線５０を接続することができる。従って、芯線５１が溶接されたバスバー３１を筐体２１に収容する等の煩雑な工程を行わなくてもよいため、接続箱付きハーネス１０を容易に製造できる。 According to the above aspect, the core wire 51 can be welded to the external connection portion 32 of the bus bar 31 while the bus bar 31 is held on the housing 21 side. Therefore, the bus bar 31 and the core wire 51 can be easily welded. Further, the electric wire 50 can be connected to the bus bar 31 provided in the electric junction box 20 of the finished product. Therefore, since it is not necessary to perform a complicated process such as accommodating the bus bar 31 to which the core wire 51 is welded in the housing 21, the harness 10 with a junction box can be easily manufactured.
　（３）芯線５１は扁平な平型導体である。また、外部接続部３２は平板状をなしている。そして、芯線５１と外部接続部３２とは、芯線５１の厚さ方向と外部接続部３２の厚さ方向とが一致するように重ね合わされた状態で溶接されている。 (3) The core wire 51 is a flat flat conductor. Further, the external connection portion 32 has a flat plate shape. The core wire 51 and the external connection portion 32 are welded in a state of being overlapped so that the thickness direction of the core wire 51 and the thickness direction of the external connection portion 32 coincide with each other.
　上記態様によれば、バスバー３１と電線５０との接続部分をより小型化することができる。 According to the above aspect, the connection portion between the bus bar 31 and the electric wire 50 can be further miniaturized.
　（４）接続箱付きハーネス１０は、芯線５１における外部接続部３２に溶接される側の端部であって絶縁被膜５２から露出した部分と、外部接続部３２との外周を覆う絶縁性の絶縁部材６１を備えている。 (4) The harness 10 with a junction box is an insulating insulation that covers the outer periphery of the external connection portion 32 and the end portion of the core wire 51 that is welded to the external connection portion 32 and is exposed from the insulating coating 52. It includes a member 61.
　上記態様によれば、露出した芯線５１、即ち露出部５３や外部接続部３２に異物が接触することが絶縁部材６１によって抑制される。従って、外部接続部３２や露出部５３と当該異物とが導通されることが抑制される。 According to the above aspect, the insulating member 61 suppresses the contact of foreign matter with the exposed core wire 51, that is, the exposed portion 53 and the external connection portion 32. Therefore, it is possible to prevent the external connection portion 32 or the exposed portion 53 from being electrically connected to the foreign matter.
　本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。なお、各変更例において、上記実施形態と同じ構成部材又は上記実施形態と対応する構成部材については、同じ符号を付してその説明の一部又は全てを省略することがある。 This embodiment can be implemented by changing as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range. In each modification, the same components as those in the above embodiment or the components corresponding to the above embodiment may be designated by the same reference numerals and a part or all of the description thereof may be omitted.
　・図３に示すように、筐体２１Ａは、筐体２１Ａの外表面から筐体２１Ａの外部に突出し外部接続部３２の基端部を覆う被覆部２９を有するものであってもよい。そして、絶縁部材６１は、被覆部２９の外周を更に覆う構成としてもよい。 As shown in FIG. 3, the housing 21A may have a covering portion 29 that protrudes from the outer surface of the housing 21A to the outside of the housing 21A and covers the base end portion of the external connecting portion 32. The insulating member 61 may be configured to further cover the outer periphery of the covering portion 29.
　図３に示す例では、被覆部２９は、側壁部２３の外周面から筐体２１の外部に突出している。被覆部２９は、側壁部２３において、図示しない突出孔２６の外側開口部の外周縁部から延びる筒状をなしている。そして、被覆部２９は、外部接続部３２の基端部の外周を全周にわたって覆っている。絶縁部材６１は、露出部５３と外部接続部３２との外周に加えて、被覆部２９の外周を更に覆っている。具体的には、絶縁部材６１は、第１端部５０ａ側の絶縁被膜５２の端部から被覆部２９の基端までの範囲を覆っている。但し、絶縁部材６１は、少なくとも被覆部２９の先端部における外周を全周にわたって覆っているのであれば、必ずしも被覆部２９を同被覆部２９の基端まで覆わなくてもよい。このようにすると、外部接続部３２の基端部が絶縁部材６１から露出することを抑制できる。 In the example shown in FIG. 3, the covering portion 29 projects from the outer peripheral surface of the side wall portion 23 to the outside of the housing 21. The covering portion 29 has a tubular shape extending from the outer peripheral edge portion of the outer opening of the protruding hole 26 (not shown) on the side wall portion 23. The covering portion 29 covers the outer circumference of the base end portion of the external connecting portion 32 over the entire circumference. The insulating member 61 further covers the outer circumference of the covering portion 29 in addition to the outer circumference of the exposed portion 53 and the external connecting portion 32. Specifically, the insulating member 61 covers the range from the end portion of the insulating coating 52 on the first end portion 50a side to the base end of the covering portion 29. However, the insulating member 61 does not necessarily have to cover the covering portion 29 to the base end of the covering portion 29 as long as it covers at least the outer circumference of the tip portion of the covering portion 29 over the entire circumference. By doing so, it is possible to prevent the base end portion of the external connecting portion 32 from being exposed from the insulating member 61.
　・上記実施形態では、絶縁部材６１は、熱収縮チューブである。しかしながら、絶縁部材６１は、熱収縮チューブに限らず、外部接続部３２及び露出部５３の外周を被覆することが可能な絶縁性の部材であればよい。例えば、絶縁部材６１は、バスバー３１と電線５０との接続部分に後付けされる絶縁性の樹脂よりなるカバーであってもよい。また例えば、絶縁部材６１は、外部接続部３２及び露出部５３を埋設した絶縁性の合成樹脂材料よりなるものであってもよい。また例えば、絶縁部材６１は、外部接続部３２及び露出部５３に巻き付けられた絶縁性の粘着テープであってもよい。なお、外部接続部３２及び露出部５３に異物が接触する可能性が無い場所に接続箱付きハーネス１０が配置される場合には、絶縁部材６１を省略することが可能な場合もある。 -In the above embodiment, the insulating member 61 is a heat shrink tube. However, the insulating member 61 is not limited to the heat-shrinkable tube, and may be any insulating member capable of covering the outer periphery of the external connecting portion 32 and the exposed portion 53. For example, the insulating member 61 may be a cover made of an insulating resin that is retrofitted to the connecting portion between the bus bar 31 and the electric wire 50. Further, for example, the insulating member 61 may be made of an insulating synthetic resin material in which the external connecting portion 32 and the exposed portion 53 are embedded. Further, for example, the insulating member 61 may be an insulating adhesive tape wound around the external connecting portion 32 and the exposed portion 53. When the harness 10 with a junction box is arranged in a place where there is no possibility of foreign matter coming into contact with the external connection portion 32 and the exposed portion 53, the insulating member 61 may be omitted.
　・芯線５１の形状は、上記実施形態の形状に限らない。電線５０が単線である場合には、芯線５１は、長手方向と直交する断面の形状が多角形状、楕円形状、円形状等の様々な形状をなすものであってもよい。また、芯線５１は、導電性を有する複数の金属線からなる撚線であってもよい。 -The shape of the core wire 51 is not limited to the shape of the above embodiment. When the electric wire 50 is a single wire, the core wire 51 may have various shapes such as a polygonal shape, an elliptical shape, and a circular shape in a cross section orthogonal to the longitudinal direction. Further, the core wire 51 may be a stranded wire composed of a plurality of conductive metal wires.
　例えば、図４及び図５に示す電線５０Ｂが有する芯線５１Ｂは、長手方向と直交する断面形状が円形状をなしている。なお、図５では、第１コネクタ４２及び第２コネクタ４３を省略して電気接続箱２０を図示している。電線５０Ｂの第１端部５０ｃにおいて、絶縁被膜５２が除去されて芯線５１Ｂが露出した露出部５３Ｂでは、芯線５１Ｂは、芯線５１Ｂの長手方向と垂直な方向に２分割されている。そして、外部接続部３２は、２分割された芯線５１Ｂの間に挟み込まれている。この状態で芯線５１Ｂは外部接続部３２に溶接されている。このため、芯線５１Ｂは、外部接続部３２の厚さ方向の両端面において機械的及び電気的に接続されている。従って、このようにすると、バスバー３１と電線５０Ｂとの接続の強度が大きくなる。 For example, the core wire 51B of the electric wire 50B shown in FIGS. 4 and 5 has a circular cross-sectional shape orthogonal to the longitudinal direction. In FIG. 5, the electric junction box 20 is shown by omitting the first connector 42 and the second connector 43. In the exposed portion 53B where the insulating coating 52 is removed and the core wire 51B is exposed at the first end portion 50c of the electric wire 50B, the core wire 51B is divided into two in a direction perpendicular to the longitudinal direction of the core wire 51B. The external connection portion 32 is sandwiched between the core wires 51B divided into two. In this state, the core wire 51B is welded to the external connection portion 32. Therefore, the core wire 51B is mechanically and electrically connected on both end faces in the thickness direction of the external connection portion 32. Therefore, in this way, the strength of the connection between the bus bar 31 and the electric wire 50B is increased.
　・上記実施形態では、芯線５１はアルミニウムよりなる。しかしながら、芯線５１は、導電性を有しバスバー３１と溶接可能な材料よりなるものであればよい。例えば、芯線５１は、アルミニウムを含む合金、銅、銅を含む合金等よりなるものであってもよい。 -In the above embodiment, the core wire 51 is made of aluminum. However, the core wire 51 may be made of a material that is conductive and can be welded to the bus bar 31. For example, the core wire 51 may be made of an alloy containing aluminum, copper, an alloy containing copper, or the like.
　・上記実施形態では、バスバー３１は銅合金よりなる。しかしながら、バスバー３１は、導電性を有し芯線５１と溶接可能な材料よりなるものであればよい。例えば、バスバー３１は、アルミニウム、アルミニウムを含む合金、銅等よりなるものであってもよい。 -In the above embodiment, the bus bar 31 is made of a copper alloy. However, the bus bar 31 may be made of a material that is conductive and can be welded to the core wire 51. For example, the bus bar 31 may be made of aluminum, an alloy containing aluminum, copper, or the like.
　・バスバー３１の形状は、上記実施形態の形状に限らない。 -The shape of the bus bar 31 is not limited to the shape of the above embodiment.
　例えば、図６に示すバスバー３１Ｃに備えられる外部接続部３２Ｃは、基端部に屈曲部を有する。図６に示す例では、外部接続部３２Ｃは、外部接続部３２Ｃにおける屈曲部よりも先端側の部位が、外部接続部３２Ｃにおける屈曲部よりも基端側の部位に対して直角をなすように屈曲されている。そして、芯線５１は、外部接続部３２Ｃにおける屈曲部よりも先端側の部位に溶接されている。このように、外部接続部３２Ｃに屈曲部を設けることにより、バスバー３１Ｃに対して電線５０が接続される方向を容易に変更することができる。なお、外部接続部３２Ｃにおける屈曲部よりも先端側の部位と、外部接続部３２Ｃにおける屈曲部よりも基端側の部位とがなす角度は、直角に限らず、適宜変更してよい。 For example, the external connection portion 32C provided in the bus bar 31C shown in FIG. 6 has a bent portion at the base end portion. In the example shown in FIG. 6, in the external connection portion 32C, the portion of the external connection portion 32C on the distal end side of the bent portion is perpendicular to the portion of the external connection portion 32C on the proximal end side of the bent portion. It is bent. The core wire 51 is welded to a portion of the external connection portion 32C on the tip side of the bent portion. By providing the bent portion in the external connecting portion 32C in this way, the direction in which the electric wire 50 is connected to the bus bar 31C can be easily changed. The angle formed by the portion of the external connection portion 32C on the tip side of the bent portion and the portion of the external connection portion 32C on the proximal end side of the bent portion is not limited to a right angle and may be changed as appropriate.
　また例えば、バスバー３１は、台形の平板状をなす外部接続部３２を有するものであってもよい。また、バスバー３１は、外部接続部３２を備えない構成であってもよい。この場合、芯線５１とバスバー３１との溶接による接続部分は、筐体２１の内部に配置される。この場合には、絶縁部材６１を省略できる。 Further, for example, the bus bar 31 may have an external connection portion 32 having a trapezoidal flat plate shape. Further, the bus bar 31 may be configured not to include the external connection portion 32. In this case, the welded connection portion between the core wire 51 and the bus bar 31 is arranged inside the housing 21. In this case, the insulating member 61 can be omitted.
　・上記実施形態では、芯線５１は、超音波溶接によりバスバー３１に溶接されている。しかしながら、芯線５１をバスバー３１に溶接する方法は、これに限らず、公知の溶接方法を用いることができる。例えば、芯線５１は、抵抗溶接によりバスバー３１に接続されてもよい。 -In the above embodiment, the core wire 51 is welded to the bus bar 31 by ultrasonic welding. However, the method of welding the core wire 51 to the bus bar 31 is not limited to this, and a known welding method can be used. For example, the core wire 51 may be connected to the bus bar 31 by resistance welding.
　・上記実施形態では、電気接続箱２０は、第１コネクタ４２及び第２コネクタ４３の２つのコネクタを有する。しかしながら、電気接続箱２０に備えられるコネクタの数は、１つ、もしくは３つ以上であってもよい。コネクタの数に応じて、コネクタを筐体２１の外部に露出させる接続孔を筐体２１に設ければよい。 -In the above embodiment, the electrical junction box 20 has two connectors, a first connector 42 and a second connector 43. However, the number of connectors provided in the electrical junction box 20 may be one, or three or more. Depending on the number of connectors, the housing 21 may be provided with connection holes for exposing the connectors to the outside of the housing 21.
　・上記実施形態では、バスバー３１は、回路基板４１を介して第１コネクタ４２及び第２コネクタ４３に電気的に接続されている。しかしながら、バスバー３１は、回路基板４１を介さずに第１コネクタ４２及び第２コネクタ４３に直接接続されてもよい。また、電気接続箱２０は、第１コネクタ４２及び第２コネクタ４３を備えない構成であってもよい。この場合、バスバー３１は、筐体２１から露出するように延出された接続端子を有する。そして、この接続端子に、車両に搭載された機器や別の電気接続箱等に設けられたコネクタが嵌合される。 -In the above embodiment, the bus bar 31 is electrically connected to the first connector 42 and the second connector 43 via the circuit board 41. However, the bus bar 31 may be directly connected to the first connector 42 and the second connector 43 without going through the circuit board 41. Further, the electrical junction box 20 may not include the first connector 42 and the second connector 43. In this case, the bus bar 31 has a connection terminal extending so as to be exposed from the housing 21. Then, a connector provided in a device mounted on the vehicle, another electric connection box, or the like is fitted into the connection terminal.
　・筐体２１の形状は、内部にバスバー３１を収容可能な形状であれば、上記実施形態の形状に限らない。 -The shape of the housing 21 is not limited to the shape of the above embodiment as long as it can accommodate the bus bar 31 inside.
　・上記実施形態では、コネクタ５４は、バッテリ１１に接続される。しかしながら、コネクタ５４は、必ずしもバッテリ１１に接続されなくてもよい。例えば、車室内に２つの接続箱付きハーネス１０が配置される場合、一方の接続箱付きハーネス１０に備えられるコネクタ５４と、他方の接続箱付きハーネス１０に備えられるコネクタ５４とを嵌合して接続する構成としてもよい。 -In the above embodiment, the connector 54 is connected to the battery 11. However, the connector 54 does not necessarily have to be connected to the battery 11. For example, when two harnesses 10 with a junction box are arranged in the vehicle interior, the connector 54 provided in the harness 10 with a junction box and the connector 54 provided in the harness 10 with a junction box are fitted together. It may be configured to connect.
　・電線５０の第２端部５０ｂには、必ずしもコネクタ５４が設けられなくてもよい。例えば、接続箱付きハーネスが２つの電気接続箱２０を備える場合には、一方の電気接続箱２０に備えられるバスバー３１に電線５０の第１端部５０ａが溶接されるとともに、他方の電気接続箱２０に備えられるバスバー３１に同電線５０の第２端部５０ｂが溶接されてもよい。 -The connector 54 does not necessarily have to be provided at the second end 50b of the electric wire 50. For example, when the harness with a junction box includes two electric junction boxes 20, the first end portion 50a of the electric wire 50 is welded to the bus bar 31 provided in one of the electric junction boxes 20, and the other electric junction box 20. The second end portion 50b of the electric wire 50 may be welded to the bus bar 31 provided in the 20.
　・接続箱付きハーネス１０は、車室内においてカウルサイド以外の場所に配置されてもよい。また、接続箱付きハーネス１０は、車両の車室内に限らず、エンジンルームに配置することも可能である。この場合、外部接続部３２及び露出部５３に水等の液体が付着することを防止する防水構造を備えることが好ましい。更に、突出孔２６、第１接続孔２７及び第２接続孔２８から筐体２１の内部に水等の液体が浸入することを防止する止水構造を設けることが好ましい。 -The harness 10 with a junction box may be arranged in a place other than the cowl side in the vehicle interior. Further, the harness 10 with a junction box can be arranged not only in the vehicle interior of the vehicle but also in the engine room. In this case, it is preferable to provide a waterproof structure for preventing liquids such as water from adhering to the external connection portion 32 and the exposed portion 53. Further, it is preferable to provide a water blocking structure for preventing liquid such as water from entering the inside of the housing 21 from the protruding hole 26, the first connection hole 27 and the second connection hole 28.
　・本開示の接続箱付きハーネス１０は、電気接続箱２０と電線５０とを備えるアセンブリと呼称することがある。 The harness 10 with a junction box of the present disclosure may be referred to as an assembly including an electrical junction box 20 and an electric wire 50.
　本開示は、以下の実装例を包含する。限定のためでなく、理解の補助として例示的な実施形態のいくつかの構成要素の参照符号を付した。以下の実装例において記述した事項のうちの一部を省略してもよく、実装例において記述した事項のうちのいくつかを選択または抽出して組合せてもよい。 This disclosure includes the following implementation examples. Reference symbols have been added to some of the components of the exemplary embodiments, not for limitation, but as an aid to understanding. Some of the items described in the following implementation examples may be omitted, or some of the items described in the implementation examples may be selected or extracted and combined.
　［付記１］本開示のいくつかの実装例は、電気接続箱（２０）と電線（５０）とを備えるアセンブリ（１０）に向けられており、
　前記電気接続箱（２０）は、筐体（２１）と、前記筐体（２１）に少なくとも部分的に収容されたバスバー（３１）とを有してよく、
　前記電線（５０）は、導電性の芯線（５１；５１Ｂ）と、前記芯線（５１；５１Ｂ）を覆う絶縁被膜（５２）とを有してよく、
　前記電線（５０）の芯線（５１；５１Ｂ）と前記バスバー（３１）とは予め溶接によって固定的かつ電気的に接続されてよい。 [Appendix 1] Some implementation examples of the present disclosure are directed to an assembly (10) comprising an electrical junction box (20) and an electric wire (50).
The electrical junction box (20) may have a housing (21) and a bus bar (31) that is at least partially housed in the housing (21).
The electric wire (50) may have a conductive core wire (51; 51B) and an insulating coating (52) covering the core wire (51; 51B).
The core wire (51; 51B) of the electric wire (50) and the bus bar (31) may be fixedly and electrically connected in advance by welding.
　この構成によれば、アセンブリ（１０）のメーカにおいて電線（５０）とバスバー（３１）とが予め溶接によって固定的かつ電気的に接続されているので、アセンブリ（１０）のユーザ（例えば車両メーカ）が電線（５０）とバスバー（３１）とをオンサイトで接続する作業を、例えば車両メーカの製造工場でのオンサイト溶接を不要とすることができる。 According to this configuration, in the manufacturer of the assembly (10), the electric wire (50) and the bus bar (31) are fixedly and electrically connected by welding in advance, so that the user of the assembly (10) (for example, the vehicle manufacturer) Can eliminate the work of connecting the electric wire (50) and the bus bar (31) on-site, for example, on-site welding at a vehicle manufacturer's manufacturing plant.
　［付記２］本開示のいくつかの実装例では、前記導電性の芯線（５１）は、前記絶縁被膜（５２）に覆われていない先端金属板部分（５３）を有してよく、
　前記導電性の芯線（５１）の前記先端金属板部分（５３）と前記バスバー（３１）とは、所定の重なり長さと所定の重なり幅とをもって重ねられてよく、
　前記先端金属板部分（５３）と前記バスバー（３１）とは溶接インターフェースを形成してよい。 [Appendix 2] In some mounting examples of the present disclosure, the conductive core wire (51) may have a tip metal plate portion (53) that is not covered by the insulating coating (52).
The tip metal plate portion (53) of the conductive core wire (51) and the bus bar (31) may be overlapped with a predetermined overlapping length and a predetermined overlapping width.
The tip metal plate portion (53) and the bus bar (31) may form a welding interface.
　［付記３］本開示のいくつかの実装例では、前記導電性の芯線（５１Ｂ）は、前記絶縁被膜（５２）に覆われていない先端金属棒部分（５３Ｂ）を有してよく、
　前記導電性の芯線（５１Ｂ）の前記先端金属棒部分（５３Ｂ）は、前記導電性の芯線（５１Ｂ）の最先端から所定の切込み深さにわたって長さ方向に延びる切込みスリットによって互いに分離されてよく、
　前記導電性の芯線（５１）の前記先端金属棒部分（５３Ｂ）と前記バスバー（３１）とが所定の重なり長さと所定の重なり幅とをもって重なるように、前記バスバー（３１）は、前記先端金属棒部分（５３Ｂ）の前記切込みスリットに挿入されてよく、
　前記導電性の芯線（５１）と前記バスバー（３１）とは、前記先端金属棒部分（５３Ｂ）の前記切込みスリットにおいて溶接インターフェースを形成してよい。 [Appendix 3] In some implementation examples of the present disclosure, the conductive core wire (51B) may have a tip metal rod portion (53B) that is not covered by the insulating coating (52).
The tip metal rod portion (53B) of the conductive core wire (51B) may be separated from each other by a notch slit extending in the length direction from the tip end of the conductive core wire (51B) over a predetermined cutting depth. ,
The bus bar (31) is made of the tip metal so that the tip metal rod portion (53B) of the conductive core wire (51) and the bus bar (31) overlap with each other with a predetermined overlap length and a predetermined overlap width. It may be inserted into the notch slit of the rod portion (53B).
The conductive core wire (51) and the bus bar (31) may form a welding interface in the notch slit of the tip metal rod portion (53B).
　この構成によれば、前記バスバー（３１）が、前記先端金属棒部分（５３Ｂ）の前記切込みスリットにおいて前記導電性の芯線（５１）と溶接インターフェースを形成するので、前記導電性の芯線（５１）と前記バスバー（３１）との接続部分の高さを過度に増加させることなく、前記導電性の芯線（５１）と前記バスバー（３１）との電気導通面積を確保できて大電流用途での発熱を抑制するのに有利である。 According to this configuration, the bus bar (31) forms a welding interface with the conductive core wire (51) in the notch slit of the tip metal rod portion (53B), so that the conductive core wire (51) The electric conduction area between the conductive core wire (51) and the bus bar (31) can be secured without excessively increasing the height of the connecting portion between the bus bar (31) and the bus bar (31), and heat is generated in a large current application. It is advantageous to suppress.
　［付記４］本開示のいくつかの実装例では、前記電線の側面視（図５）において、前記先端金属棒部分（５３Ｂ）の前記切込みスリットの最奥部と前記バスバー（３１）の先端との間に、先細の空隙が形成されてよい。 [Appendix 4] In some mounting examples of the present disclosure, in the side view (FIG. 5) of the electric wire, the innermost part of the notch slit of the tip metal rod portion (53B) and the tip of the bus bar (31). A tapered void may be formed between the two.
　［付記５］本開示のいくつかの実装例では、電前記電線の側面視（図５）において、前記先端金属棒部分（５３Ｂ）の前記切込みスリットの最奥部は前記絶縁被膜（５２）の端面と一致または整列してよい。 [Appendix 5] In some mounting examples of the present disclosure, in the side view (FIG. 5) of the electric wire, the innermost portion of the notch slit of the tip metal rod portion (53B) is the insulating coating (52). It may match or align with the end face.
　［付記６］本開示のいくつかの実装例では、前記切込みスリットを閉じた状態の前記先端金属棒部分（５３Ｂ）の導体断面積は、前記導電性の芯線（５１）の導体断面積と等しい。 [Appendix 6] In some implementation examples of the present disclosure, the conductor cross-sectional area of the tip metal rod portion (53B) with the notch slit closed is equal to the conductor cross-sectional area of the conductive core wire (51). ..
　［付記７］本開示のいくつかの実装例では、前記先端金属棒部分（５３Ｂ）の前記所定の切込み深さは、前記導電性の芯線（５１Ｂ）の全長よりも短くてよい。 [Appendix 7] In some mounting examples of the present disclosure, the predetermined depth of cut of the tip metal rod portion (53B) may be shorter than the total length of the conductive core wire (51B).
　［付記８］本開示のいくつかの実装例では、前記先端金属棒部分（５３Ｂ）の前記所定の切込み深さは、前記導電性の芯線（５１Ｂ）の前記先端金属棒部分（５３Ｂ）の長さと一致または実質的に一致してよい。 [Appendix 8] In some mounting examples of the present disclosure, the predetermined depth of cut of the tip metal rod portion (53B) is the length of the tip metal rod portion (53B) of the conductive core wire (51B). May match or substantially match.
　［付記９］本開示のいくつかの実装例では、前記溶接インターフェースは、前記所定の重なり長さよりも小さい溶接長さ、及び／または、前記所定の重なり幅よりも短い溶接幅を有してよい。 [Appendix 9] In some implementation examples of the present disclosure, the welding interface may have a welding length smaller than the predetermined overlap length and / or a welding width shorter than the predetermined overlap width. ..
　［付記１０］本開示のいくつかの実装例では、前記溶接インターフェースは、前記所定の重なり長さ及び前記所定の重なり幅とそれぞれ一致又は実質的に一致する溶接長さ及び溶接幅を有してよい。 [Appendix 10] In some implementation examples of the present disclosure, the welding interface has a welding length and a welding width that match or substantially match the predetermined overlap length and the predetermined overlap width, respectively. Good.
　［付記１１］本開示のいくつかの実装例では、前記電線（５０）は、電源（１１）からの電力を前記バスバー（３１）に供給するように構成された電力供給線であってよい。 [Appendix 11] In some implementation examples of the present disclosure, the electric wire (50) may be a power supply line configured to supply electric power from the power source (11) to the bus bar (31).
　［付記１２］本開示のいくつかの実装例では、前記電気接続箱（２０）は、
　前記バスバー（３１）の先端部分であり得る外部接続部（３２）を前記電気接続箱（２０）から外向きに突出させるためのバスバー貫通孔（２６）と、
　電源（１１）とは異なる１つまたは複数の電気機器と前記電気接続箱（２０）とを電気的に接続するための１つまたは複数のコネクタ（４２、４３）を装着するための１つまたは複数のコネクタ貫通孔（２７、２８）と
を有してよく、
　前記バスバー貫通孔（２６）と前記１つまたは複数のコネクタ貫通孔（２７、２８）とは、前記電気接続箱（２０）の一つの共通面にサイドバイサイドで開口してよい。 [Appendix 12] In some implementation examples of the present disclosure, the electrical junction box (20) is
A bus bar through hole (26) for projecting an external connection portion (32), which may be a tip portion of the bus bar (31), outward from the electrical connection box (20).
One or more connectors (42, 43) for electrically connecting one or more electrical devices different from the power supply (11) to the electrical junction box (20). It may have a plurality of connector through holes (27, 28).
The busbar through hole (26) and the one or more connector through holes (27, 28) may be opened side by side to one common surface of the electrical connection box (20).
　［付記１３］本開示のいくつかの実装例では、芯線がバスバーに溶接されるとき、バスバー（３１）が電気接続箱（２０）から突出する方向における露出部（５３）と電気接続箱（２０）との間、及び外部接続部（３２）と絶縁被膜（５２）の端面との間には、空隙が形成されてよい。これによれば、芯線をバスバーに溶接するときに、平行にまたは直交した２つの表面同士の接触箇所を溶接個所とする以外に、例えば２つの部材の表面の継ぎ目を溶接個所とする隅肉溶接を選択することができるようになる。このように、溶接個所を決める自由度が高まることで、幅広い溶接方法に対応可能となる。 [Appendix 13] In some implementation examples of the present disclosure, when the core wire is welded to the bus bar, the exposed portion (53) and the electric junction box (20) in the direction in which the bus bar (31) protrudes from the electric junction box (20). ), And between the external connection portion (32) and the end face of the insulating coating (52), a gap may be formed. According to this, when welding a core wire to a bus bar, in addition to the contact point between two parallel or orthogonal surfaces as the welding point, for example, fillet welding in which the seam between the surfaces of the two members is the welding point. Will be able to be selected. In this way, by increasing the degree of freedom in determining the welding location, it becomes possible to support a wide range of welding methods.
　１０…接続箱付きハーネス
　１１…バッテリ
　２０…電気接続箱
　２１，２１Ａ…筐体
　２２…収容空間
　２３…側壁部
　２４…底部
　２５…天井部
　２６…突出孔
　２７…第１接続孔
　２８…第２接続孔
　２９…被覆部
　３１，３１Ｃ…バスバー
　３２，３２Ｃ…外部接続部
　４１…回路基板
　４２…第１コネクタ
　４３…第２コネクタ
　５０，５０Ｂ…電線
　５１，５１Ｂ…芯線
　５０ａ，５０ｃ…第１端部
　５０ｂ…第２端部
　５２…絶縁被膜
　５３，５３Ｂ…露出部
　５４…コネクタ
　６１…絶縁部材 10 ... Harness with connector 11 ... Battery 20 ... Electric connector 21, 21A ... Housing 22 ... Storage space 23 ... Side wall 24 ... Bottom 25 ... Ceiling 26 ... Protruding hole 27 ... First connection hole 28 ... Second connection Hole 29 ... Covering part 31, 31C ... Bus bar 32, 32C ... External connection part 41 ... Circuit board 42 ... First connector 43 ... Second connector 50, 50B ... Electric wire 51, 51B ... Core wire 50a, 50c ... First end 50b … Second end 52… Insulation coating 53, 53B… Exposed part 54… Connector 61… Insulation member

Claims (5)

  1. 　筐体及び前記筐体に収容されたバスバーを有する電気接続箱と、
    　導電性の芯線及び前記芯線の表面を覆う絶縁被膜を有し前記芯線が前記バスバーに溶接された電線と
    を備えた接続箱付きハーネス。     An electrical junction box having a housing and a bus bar housed in the housing,
    A harness with a junction box having a conductive core wire and an electric wire having an insulating coating covering the surface of the core wire and having the core wire welded to the bus bar.
  2. 　前記バスバーは、前記筐体の外部に突出した外部接続部を有し、
    　前記芯線は、前記外部接続部に溶接されている請求項１に記載の接続箱付きハーネス。     The bus bar has an external connection portion protruding to the outside of the housing.
    The harness with a junction box according to claim 1, wherein the core wire is welded to the external connection portion.
  3. 　前記芯線は、扁平な平型導体であり、
    　前記外部接続部は平板状をなしており、
    　前記芯線と前記外部接続部とは、前記芯線の厚さ方向と前記外部接続部の厚さ方向とが一致するように重ね合わされた状態で溶接されている請求項２に記載の接続箱付きハーネス。     The core wire is a flat flat conductor.
    The external connection portion has a flat plate shape.
    The harness with a junction box according to claim 2, wherein the core wire and the external connection portion are welded in a state of being overlapped so that the thickness direction of the core wire and the thickness direction of the external connection portion coincide with each other. ..
  4. 　前記芯線における前記外部接続部に溶接される側の端部であって前記絶縁被膜から露出した部分と、前記外部接続部との外周を覆う絶縁性の絶縁部材を備えた請求項２又は請求項３に記載の接続箱付きハーネス。 2. or claim 2, wherein the core wire is provided with an insulating insulating member that covers the outer periphery of the external connection portion and the end portion of the core wire that is welded to the external connection portion and is exposed from the insulating coating. Harness with junction box according to 3.
  5. 　前記筐体は、前記筐体の外表面から前記筐体の外部に突出し前記外部接続部の基端部を覆う被覆部を有し、
    　前記絶縁部材は、前記被覆部の外周を更に覆う請求項４に記載の接続箱付きハーネス。     The housing has a covering portion that protrudes from the outer surface of the housing to the outside of the housing and covers the base end portion of the external connection portion.
    The harness with a junction box according to claim 4, wherein the insulating member further covers the outer periphery of the covering portion.
PCT/JP2020/031299 2019-09-27 2020-08-19 Junction box- attached harness WO2021059803A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567499A (en) * 1979-06-29 1981-01-26 Sumitomo Electric Industries Method of waterproofing wire lead port
JP2002359020A (en) * 2001-05-30 2002-12-13 Sumitomo Wiring Syst Ltd Connecting method and connecting structure of flat cable and bus bar
JP2002374075A (en) * 2001-06-13 2002-12-26 Fujitsu Ten Ltd Method for connecting wirings and wiring connecting structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567499A (en) * 1979-06-29 1981-01-26 Sumitomo Electric Industries Method of waterproofing wire lead port
JP2002359020A (en) * 2001-05-30 2002-12-13 Sumitomo Wiring Syst Ltd Connecting method and connecting structure of flat cable and bus bar
JP2002374075A (en) * 2001-06-13 2002-12-26 Fujitsu Ten Ltd Method for connecting wirings and wiring connecting structure

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