WO2024111295A1 - 電気接続箱 - Google Patents

電気接続箱 Download PDF

Info

Publication number
WO2024111295A1
WO2024111295A1 PCT/JP2023/037618 JP2023037618W WO2024111295A1 WO 2024111295 A1 WO2024111295 A1 WO 2024111295A1 JP 2023037618 W JP2023037618 W JP 2023037618W WO 2024111295 A1 WO2024111295 A1 WO 2024111295A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical connection
power supply
load
outside
frame
Prior art date
Application number
PCT/JP2023/037618
Other languages
English (en)
French (fr)
Inventor
浩孝 清田
健 小野田
Original Assignee
矢崎総業株式会社
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 矢崎総業株式会社 filed Critical 矢崎総業株式会社
Publication of WO2024111295A1 publication Critical patent/WO2024111295A1/ja

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • 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
    • H02G3/14—Fastening of cover or lid to box
    • 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

  • the present invention relates to an electrical connection box.
  • an electrical junction box electronic components such as relays that are placed between an external power source and a load are housed in a housing.
  • electric wires electrically connected to the electronic components are routed inside the housing, and these electric wires are then pulled out of the housing and electrically connected to the power source and load.
  • this conventional electrical junction box is disclosed in Patent Document 1 below.
  • the objective of the present invention is to provide an electrical connection box that can prevent other components from coming into contact with electrical connection points outside the housing.
  • the present invention comprises an electronic component, an internal conductive member that electrically connects the electronic component to an external power source, a frame having a cylindrical portion consisting of a cylindrical wall with an opening at at least one end and that houses and holds the electronic component and the internal conductive member within the cylindrical portion, a cover member that closes the opening of the cylindrical portion, and a circuit branching component that is arranged outside the frame outside the cylindrical portion and that interposes a conductive circuit branching member contained in a resin member between the external power source and an external load, the internal conductive member having a first electrical connection portion that physically and electrically connects the electronic component within the cylindrical portion and a second electrical connection portion, the circuit branching member being exposed to the outside of the resin member and arranged outside the frame outside the cylindrical portion, and electrically connecting the electronic component to the external power source.
  • the power connection part physically and electrically connects the power terminal fitting of the end of the connected power cable to the second electrical connection part of the internal conductive member, and the load connection part is exposed to the outside of the resin member and arranged outside the frame outside the cylinder of the cylinder part, and physically and electrically connects the load terminal fitting of the end of the load cable electrically connected to the external load
  • the cylinder wall of the cylinder part has an opposing wall that is arranged outside the cylinder facing the circuit branch part
  • the resin member has a holding part that holds the load connection part with the exposed surface of the load connection part exposed
  • the circuit branch part is arranged so that the exposed surface of the load connection part faces the opposing wall, and the exposed surface is interposed between the holding part and the opposing wall.
  • the electrical connection box of the present invention is able to prevent overloading inside the housing caused by the wires connected to the circuit branching parts by arranging the circuit branching parts outside the cylindrical portion and outside the frame.
  • the physical and electrical connection points (first power supply side electrical connection structure, second power supply side electrical connection structure, etc.) of the circuit branching parts are arranged closer to the housing than the resin member, so that it is possible to prevent other parts from coming into contact with the connection points.
  • FIG. 1 is a perspective view showing an electrical junction box according to an embodiment.
  • FIG. 2 is a plan view of the electrical junction box (without the first cover member) according to the embodiment, as viewed from one opening side of the frame.
  • FIG. 3 is a plan view of the electrical junction box (without the first cover member) according to the embodiment, as viewed from the side of the frame.
  • FIG. 4 is an exploded perspective view showing the electrical junction box of the embodiment (without the first cover member and the second cover member).
  • FIG. 5 is an exploded perspective view of the electrical junction box (without the first cover member and the second cover member) according to the embodiment, as viewed from a different angle.
  • FIG. 6 is a cross-sectional view taken along line X1-X1 of FIG. FIG.
  • FIG. 7 is a cross-sectional view taken along line X2-X2 of FIG.
  • FIG. 8 is an exploded perspective view showing the block and the internal conductive member and male screw member housed therein.
  • FIG. 9 is an exploded perspective view of a frame and a second cover member in the electrical junction box (without the first cover member) of the embodiment.
  • FIG. 10 is an exploded perspective view for explaining the load side electrical connection structure.
  • FIG. 11 is a perspective view showing a circuit protection member.
  • FIG. 12 is a perspective view showing the frame.
  • FIG. 13 is a perspective view showing the first divided cover.
  • the reference numeral 1 in Fig. 1 to Fig. 7 indicates an electrical junction box of this embodiment.
  • This electrical junction box 1 is mounted on a vehicle such as an automobile, and is interposed between an external power source B such as a secondary battery in the vehicle and an external load L such as a power distribution target (e.g., auxiliary items to be powered), thereby supplying power from the external power source B to the external load L (Fig. 1).
  • an external power source B such as a secondary battery in the vehicle
  • an external load L such as a power distribution target (e.g., auxiliary items to be powered)
  • the electrical junction box 1 includes electronic components 10 such as relays and fuses (Fig. 2), and these electronic components 10 are interposed between the external power source B and the external load L. Furthermore, the electrical junction box 1 includes a circuit branch component 20 that is interposed between the external power source B and the external load L (Figs. 1 to 5). This circuit branch component 20 is a component for distributing power from the external power source B to multiple external loads L. The electrical junction box 1 includes multiple electronic components 10, and at least one circuit branch component 20.
  • the electrical connection box 1 comprises a block 30 that holds the electronic components 10, and a frame 40 having a cylindrical portion 41 made up of cylindrical walls 41c with openings at both ends (openings 41a, 41b) that house and hold the block 30 (Figs. 1 to 8).
  • the electrical connection box 1 also comprises a cover member (hereinafter referred to as the "first cover member”) 51 that closes one opening 41a in the cylindrical portion 41, and a cover member (hereinafter referred to as the "second cover member”) 52 that closes the other opening 41b in the cylindrical portion 41 (Figs. 1, 3, and 9).
  • the block 30, frame 40, first cover member 51, and second cover member 52 are molded from an insulating material such as synthetic resin.
  • a housing is formed by a frame 40, a first cover member 51, and a second cover member 52, and electric wires (not shown) electrically connected to the electronic components 10 inside the housing are routed through the housing and pulled out from an opening outside the housing.
  • the block 30 is inserted into the tube of the tube portion 41 from the other opening 41b.
  • the frame 40 is made up of one tube portion 41
  • all of the outer walls forming the outer frame are formed from the tube wall 41c of the tube portion 41.
  • the frame 40 is made up of a combination of multiple tube portions 41 with the opening direction of one opening 41a aligned with each other and the opening direction of the other opening 41b aligned with each other
  • the outer walls forming the outer frame are formed from a combination of parts of the tube walls 41c of the multiple tube portions 41.
  • all or part of the outer walls forming the outer frame of the frame 40 are formed from the tube wall 41c of the tube portion 41.
  • the frame 40 shown here is made up of two tubular sections 41, and is mounted on the vehicle with one opening 41a facing upward on the vehicle.
  • the first cover member 51 shown here is provided for each tubular section 41.
  • the second cover member 52 shown here is divided into a first split cover 52A and a second split cover 52B that are assembled together, and when the first split cover 52A and the second split cover 52B are assembled together, they close the other opening 41b of each of the two tubular sections 41 (Figs. 1, 3, and 9).
  • the electrical connection box 1 includes an internal conductive member 60 that electrically connects the electronic component 10 to an external power source B and is held in the block 30 together with the electronic component 10 (FIGS. 5, 6, and 8).
  • the internal conductive member 60 has a first electrical connection portion 61 that physically and electrically connects the electronic component 10 to the electronic component 10 inside the tube portion 41 (FIG. 8).
  • the first electrical connection portion 61 is provided for each electronic component 10.
  • the internal conductive member 60 also has a second electrical connection portion 62 that electrically connects the electronic component 10 to the external power source B (FIGS. 5, 6, and 8).
  • the first electrical connection portions 61 and the second electrical connection portions 62 are connected by connecting portions 63 (FIG. 8).
  • the internal conductive member 60 has a shape in which the connecting portions 63 extend to the outside of the tube portion 41, and the second electrical connection portions 62 are connected to the connecting portions 63 outside the frame 40 to which the connecting portions 63 extend.
  • the second electrical connection portion 62 is located outside the frame 40, outside the cylindrical portion 41.
  • This internal conductive member 60 is a so-called bus bar, and is formed into a plate shape using, for example, a metal plate as the base material.
  • the block 30 has a block main body 31 that holds the electronic component 10 and the internal conductive member 60 inside the cylindrical portion 41 ( Figures 1, 2, 4, 5, 8, and 9).
  • the electrical connection box 1 may also include a frame 40 that is integrated with the block 30.
  • the frame 40 includes a cylindrical wall 41c with an opening 41a at at least one end, and a cylindrical portion 41 that houses and holds the electronic component 10 and the internal conductive member 60 within the cylindrical portion.
  • the electrical connection box 1 includes a first cover member 51 and a second cover member 52, as in the previous example.
  • the frame 40 includes a cylindrical portion 41 that includes a cylindrical wall 41c with only an opening 41a (i.e., a cylindrical portion 41 with the opening 41b blocked)
  • the electrical connection box 1 includes only the first cover member 51.
  • the circuit branching component 20 is disposed outside the frame 40, outside the cylindrical portion 41.
  • the circuit branching component 20 includes a conductive circuit branching member 21 that is interposed between the external power source B and the external load L (FIGS. 4, 5, 10, and 11).
  • the circuit branch component 20 has at least a power source connection portion 22 and a load connection portion 23, which will be described later.
  • the circuit branch component 20 has a connecting portion 25, which will be described later, that electrically connects the power source connection portion 22 and the multiple load connection portions 23.
  • the circuit branch component 20 shown here has a fusible portion 24, which will be described later, for cutting off an overcurrent between the external power source B and the external load L, and therefore has a connecting portion 25, which will be described later.
  • a circuit protection component for cutting off an overcurrent between the external power source B and the external load L is given as an example of the circuit branch component 20. Therefore, the circuit branch component (circuit protection component) 20 shown here has a conductive circuit protection member interposed between the external power source B and the external load L as the circuit branch member 21.
  • This circuit branching member (circuit protection member) 21 is disposed outside the frame 40 outside the cylindrical portion 41, and has a power connection portion 22 that physically and electrically connects the power supply side terminal fitting T at the end of the power supply side electric wire WB electrically connected to the external power supply B to the second electrical connection portion 62 of the internal conductive member 60 ( Figures 4 to 6, 10 and 11).
  • the circuit branching member (circuit protection member) 21 is disposed outside the frame 40 outside the cylindrical portion 41, and has a load connection portion 23 that physically and electrically connects the load side terminal fitting TL of the end of the load side electric wire WL electrically connected to the external load L, and a fusible portion 24 that is interposed between the power supply connection portion 22 and the load connection portion 23 and melts when an overcurrent flows (Figs. 10 and 11).
  • the load connection portion 23 and the fusible portion 24 are provided for each external load L.
  • the circuit branching member (circuit protection member) 21 has a connecting portion 25 that connects the power supply connection portion 22 and the fusible portion 24 (Fig. 11).
  • the connecting portion 25 connects the power supply connection portion 22 and the fusible portion 24 for each external load L.
  • This circuit branching member (circuit protection member) 21 is a so-called bus bar, and is formed into a plate shape using, for example, a metal plate as a base material.
  • This circuit branching component (circuit protection component) 20 has the circuit branching member (circuit protection member) 21 embedded in a resin member 26 interposed between an external power source B and an external load L. For this reason, in this circuit branching component (circuit protection component) 20, the power supply connection portion 22, the load connection portion 23, and the fusible portion 24 are exposed to the outside of the resin member 26 (FIGS. 7, 10, and 11).
  • the resin member 26 is integrally molded with the circuit branching member (circuit protection member) 21 using a synthetic resin material while exposing the power supply connection portion 22, the load connection portion 23, and the fusible portion 24. Then, in this circuit branching component (circuit protection component) 20, a transparent resin cover 27 made of a synthetic resin material that covers and hides the exposed fusible portion 24 is assembled to the resin member 26 (FIGS. 7 and 10).
  • the electrical connection box 1 includes a power supply side electrical connection structure 70 that physically and electrically connects the power supply side terminal fitting TB at the end of the power supply side wire WB, the second electrical connection portion 62 of the internal conductive member 60, and the power supply connection portion 22 of the circuit branch member (circuit protection member) 21 (FIGS. 2, 5, 6, and 8).
  • This power supply side electrical connection structure 70 is disposed outside the frame 40, outside the cylindrical portion 41. Therefore, this power supply side electrical connection structure 70 physically and electrically connects the power supply side terminal fitting TB at the end of the power supply side wire WB, the second electrical connection portion 62 of the internal conductive member 60, and the power supply connection portion 22 of the circuit branch member (circuit protection member) 21 outside the frame 40.
  • the power supply side electrical connection structure 70 shown here includes a male screw member 71, a screw holding member 72 that holds the male screw member 71 with the male screw portion exposed, and a female screw member 73 that screws into the male screw portion of the male screw member 71 (FIGS. 5, 6, and 8).
  • This power supply side electrical connection structure 70 has the male screw portion of the male screw member 71 inserted through the through holes TBa, 62a, and 22a provided in the power supply side terminal fitting TB, the second electrical connection portion 62 of the internal conductive member 60, and the power supply connection portion 22 of the circuit branch member (circuit protection member) 21, respectively, and the female screw member 73 screwed into the male screw portion to fasten the power supply side terminal fitting TB, the second electrical connection portion 62 of the internal conductive member 60, and the power supply connection portion 22 of the circuit branch member (circuit protection member) 21 together (FIGS. 5, 6, and 8).
  • the male screw member 71 is positioned so that the screw axis of the male screw portion is aligned vertically (i.e., in the vertical direction of the vehicle) and the male screw portion protrudes vertically upward (i.e., toward the top of the vehicle) from the screw holding member 72.
  • the electrical connection box 1 also includes a load side electrical connection structure 75 that physically and electrically connects the load side terminal fitting TL at the end of the load side electric wire WL to the load connection portion 23 of the circuit branch member (circuit protection member) 21 (FIGS. 4, 7, and 10).
  • This load side electrical connection structure 75 is disposed outside the frame 40, outside the cylindrical portion 41. Therefore, this load side electrical connection structure 75 physically and electrically connects the load side terminal fitting TL at the end of the load side electric wire WL to the load connection portion 23 of the circuit branch member (circuit protection member) 21 outside the frame 40.
  • the load side electrical connection structure 75 shown here comprises a male screw member 76 and a female screw member 77 that screws into the male screw portion of the male screw member 76 (Figs. 7 and 10).
  • a resin member 26 is integrally molded with the male screw member 76, with the male screw portion of the male screw member 76 inserted into the through hole 23a (Fig. 11) of the load connection portion 23 of the circuit branch member (circuit protection member) 21 and the male screw portion exposed.
  • the resin member 26 also has a holding portion 26a that holds the load connection portion 23 with the exposed surface 23b of the load connection portion 23 exposed (Figs. 3 to 5, 7 and 10).
  • This load side electrical connection structure 75 fastens the load side terminal fitting TL and the load connection portion 23 of the circuit branching member (circuit protection member) 21 together by inserting the male screw portion of the male screw member 76 into the through hole TLa provided in the load side terminal fitting TL and screwing the female screw member 77 into the male screw portion ( Figures 7 and 10). As a result, this load side electrical connection structure 75 tightly attaches the load side terminal fitting TL to the exposed surface 23b of the load connection portion 23, physically and electrically connecting them to each other.
  • circuit branching component 20 is positioned outside the frame 40 as follows:
  • the frame 40 has an outer wall forming an outer frame recessed into the inside of the tube portion 41 to form a recess 42 in which the circuit branch component (circuit protection component) 20 is placed (Figs. 2, 3, 5, and 12). It is desirable for this recess 42 to have a volume equal to or greater than the size of the circuit branch component (circuit protection component) 20, and to be formed so that this circuit branch component (circuit protection component) 20 can be contained without protruding.
  • the tube wall 41c of the tube portion 41 has an opposing wall 41f that is placed opposite the circuit branch component (circuit protection component) 20 outside the tube.
  • the recess 42 is formed by recessing this opposing wall 41f into the inside of the tube.
  • the frame 40 also has an opening 43a that opens in the same direction as one opening 41a in the tube portion 41, and a secondary tube portion 43 that bulges out from the tube wall 41c of the tube portion 41 toward the outside of the frame 40 ( Figures 1 to 3, 5, 9, and 12).
  • This secondary tube portion 43 is provided in the recess 42 of the frame 40.
  • the secondary tube portion 43 shown here is formed as a tube with openings on both ends (openings 43a, 43b). Therefore, in this secondary tube portion 43, one opening 43a is located on the side of one opening 41a of the tube portion 41, and the other opening 43b is located on the side of the other opening 41b of the tube portion 41.
  • a power source side electrical connection structure 70 is provided inside the secondary cylindrical portion 43.
  • the screw retaining member 72 of the power source side electrical connection structure 70 is housed inside the cylindrical portion, and the male screw portion of the male screw member 71 in the power source side electrical connection structure 70 protrudes from one opening 43a.
  • the second electrical connection portion 62 of the internal conductive member 60 has the male screw portion of the male screw member 71 protruding from one opening 43a of the secondary cylindrical portion 43 inserted into the through hole 62a.
  • the cylindrical wall 41c of the cylindrical portion 41 has a notch 44 that connects its own interior with the interior of the secondary cylindrical portion 43, and allows the second electrical connection portion 62 of the internal conductive member 60 to protrude outside the frame 40 outside the cylindrical portion 41 ( Figures 5 and 6).
  • This notch 44 is a cutout in the cylindrical wall 41c of the cylindrical portion 41 from the end on the other opening 41b side toward one opening 41a.
  • the block 30 has a protruding block portion 32 that protrudes from the notch 44 to the outside of the cylindrical portion 41 and is housed within the cylindrical portion of the secondary cylindrical portion 43 ( Figures 5, 6, and 8).
  • a screw retaining member 72 is attached to the protruding block portion 32, thereby retaining the power supply side electrical connection structure 70.
  • the male screw portion of the male screw member 71 of the power source side electrical connection structure 70 is inserted into the through hole 62a of the second electrical connection portion 62 of the internal conductive member 60.
  • the block body 31 holding the internal conductive member 60 is inserted into the tube of the tube portion 41 from the other opening 41b, and the protruding block portion 32 holding the power source side electrical connection structure 70 is inserted into the tube of the secondary tube portion 43 together with the second electrical connection portion 62 of the internal conductive member 60 from the other opening 43b.
  • the male screw portion of the male screw member 71 is inserted into the through hole 22a to assemble the power supply connection portion 22 of the circuit branch member (circuit protection member) 21 to the power supply side electrical connection structure 70, and further, the male screw portion of the male screw member 71 is inserted into the through hole TBa to assemble the power supply side terminal fitting TB to the power supply side electrical connection structure 70. Then, in this electrical connection box 1, the female screw member 73 is screwed into the male screw portion of the male screw member 71 to fasten together the power supply side terminal fitting TB, the second electrical connection portion 62 of the internal conductive member 60, and the power supply connection portion 22 of the circuit branch member (circuit protection member) 21. In this electrical connection box 1, the power supply side terminal fitting TB and the circuit branch component (circuit protection component) 20 are assembled to the block 30 via the power supply side electrical connection structure 70.
  • One opening 43a of the secondary cylinder portion 43 is covered by a first cover member 51 attached to the frame 40, together with the power supply side terminal fitting TB, the second electrical connection portion 62 of the internal conductive member 60, the power supply connection portion 22 of the circuit branch member (circuit protection member) 21, and the power supply side electrical connection structure 70, and is housed within this first cover member 51.
  • This first cover member 51 also covers the recess 42 of the frame 40, and houses the circuit branch component (circuit protection component) 20 in this recess 42 within the space between the recess 42 and the first cover member 51.
  • the other opening 43b of the secondary cylinder portion 43 is blocked by a blocking portion 53 provided on a second cover member 52 attached to the frame 40 so as not to be exposed to the outside of the frame 40 ( Figures 1, 3, 9 and 13).
  • the exposed surface 23b of the load connection portion 23 is arranged to face the opposing wall 41f, and the exposed surface 23b is interposed between the holding portion 26a of the resin member 26 and the opposing wall 41f (FIG. 7).
  • the exposed surfaces 23b of all the load connection portions 23 are arranged to face the opposing wall 41f.
  • all the load side electrical connection structures 75 are provided on the opposing wall 41f side of the holding portion 26a.
  • this load side electrical connection structure 75 physically and electrically connects the load side terminal fitting TL of the terminal of the load side electric wire WL and the load connection portion 23 of the circuit branch component (circuit protection component) 21 on the opposing wall 41f side of the holding portion 26a.
  • the circuit branch component (circuit protection component) 20 is assembled with the load side electrical connection structure 75 hidden between the holding portion 26a of the resin member 26 and the opposing wall body 41f. Therefore, in this electrical connection box 1, when the first cover member 51 is removed, the load side electrical connection structure 75, the load side terminal fitting TL, and the load connection portion 23 of the circuit branch component (circuit protection component) 21 can be prevented from coming into contact with other components.
  • this electrical connection box 1 can prevent other components, such as metal parts and tools, from coming into contact with the load side electrical connection structure 75, etc., when performing, for example, the assembly work of peripheral components or the maintenance work of peripheral components, so that it is possible to avoid electrical conduction between other components and the load side electrical connection structure 75, etc.
  • the power supply connection portion 22 exposed from the resin member 26 is disposed on the opposing wall 41f side of the resin member 26 (FIG. 6). That is, in this circuit branch component (circuit protection component) 20, the power supply side electrical connection structure 70 is provided on the opposing wall 41f side of the resin member 26. Therefore, this power supply side electrical connection structure 70 physically and electrically connects the power supply side terminal fitting TB at the end of the power supply side wire WB, the second electrical connection portion 62 of the internal conductive member 60, and the power supply connection portion 22 of the circuit branch component (circuit protection component) 21 on the opposing wall 41f side of the resin member 26.
  • the circuit branch component (circuit protection component) 20 is assembled with the power supply side electrical connection structure 70 hidden between the resin member 26 and the opposing wall 41f. Therefore, when the first cover member 51 is removed, the electrical connection box 1 can prevent contact from the side with the power supply side electrical connection structure 70, the power supply side terminal fitting TB at the end of the power supply side wire WB, the second electrical connection portion 62 of the internal conductive member 60, and the power connection portion 22 of the circuit branch member (circuit protection member) 21.
  • the electrical connection box 1 can prevent contact from the side with the power supply side electrical connection structure 70, etc., with other parts such as metal parts and tools, for example, when performing assembly work or maintenance work on peripheral parts, and can prevent current flow between other parts and the load side electrical connection structure 75, etc.
  • the power supply side wire WB and the load side wire WL may all have core wires made of copper or a copper alloy. However, in order to reduce weight, it is desirable that at least one of the power supply side wires WB and the load side wires WL be made of aluminum or an aluminum alloy.
  • the power supply side wire WB and the load side wire WL may all have core wires made of aluminum or an aluminum alloy, or at least one core wire may be made of aluminum or an aluminum alloy and the remaining core wires may be made of copper or a copper alloy.
  • the circuit branching components (circuit protection components) 20 are arranged outside the frame 40, outside the tube portion 41, and the power supply side wires WB and load side wires WL, which are difficult to bend, are routed outside the frame 40.
  • this electrical junction box 1 can prevent the power supply side wires WB and the like from applying excessive loads to the surrounding area inside the housing, and can also improve the accommodation of other wires within the tube portion 41.
  • the electrical connection box 1 shown here has a first internal conductive member 60A and a second internal conductive member 60B as the internal conductive members 60, and these first internal conductive members 60A and second internal conductive members 60B are held in the block 30 ( Figures 5 and 8).
  • first internal conductive members 60A are provided as the internal conductive members 60.
  • the circuit branching member (circuit protection member) 21 shown here has a first power supply connection portion 22A and a second power supply connection portion 22B as the power supply connection portion 22, and the first power supply connection portion 22A and the second power supply connection portion 22B are electrically connected to the first power supply side electric wire WB1 and the second power supply side electric wire WB2 as the power supply side electric wire WB, respectively (FIGS. 5, 10, and 11).
  • the first power supply connection portion 22A and the second power supply connection portion 22B are connected by a connecting portion 25, and the fusible portion 24 is connected to the first power supply connection portion 22A and the second power supply connection portion 22B via the connecting portion 25.
  • the fusible portion 24 is interposed between the first power supply connection portion 22A and the load connection portion 23, and is interposed between the second power supply connection portion 22B and the load connection portion 23.
  • the first power supply side wire WB1 is interposed between the first power supply connection part 22A and the external power supply B when viewed from the circuit branching member (circuit protection member) 21, electrically connecting the first power supply connection part 22A to the external power supply B.
  • the second power supply side wire WB2 is electrically connected to an external electrical component P, such as an alternator or DC-DC converter, that is disposed outside the housing, and is also electrically connected to the external power supply B via the circuit branching member (circuit protection member) 21 and the first power supply side wire WB1.
  • the second power supply side wire WB2 electrically connects the external electrical component P to the external power supply B via the circuit branching member (circuit protection member) 21 and the first power supply side wire WB1.
  • the first power supply connection portion 22A physically and electrically connects the power supply side terminal fitting TB at the end of the first power supply side electric wire WB1 to the second electrical connection portion 62 of the first internal conductive member 60A.
  • the electrical connection box 1 is provided with a power supply side electrical connection structure 70A as the power supply side electrical connection structure 70, which physically and electrically connects the power supply side terminal fitting TB at the end of the first power supply side electric wire WB1, the second electrical connection portion 62 of the first internal conductive member 60A, and the first power supply connection portion 22A of the circuit branch member (circuit protection member) 21 among each other ( Figures 2, 5, 6, and 8).
  • the male screw portion of the male screw member 71 is inserted into the through holes TBa, 62a, 22a of the power supply side terminal fitting TB at the end of the first power supply side wire WB1, the second electrical connection portion 62 of the first internal conductive member 60A, and the first power supply connection portion 22A of the circuit branch member (circuit protection member) 21, and the female screw member 73 is screwed into the male screw portion to fasten the power supply side terminal fitting TB, the second electrical connection portion 62 of the first internal conductive member 60A, and the first power supply connection portion 22A of the circuit branch member (circuit protection member) 21 together.
  • the power supply side terminal fitting TB, the second electrical connection portions 62 of the two first internal conductive members 60A, and the first power supply connection portion 22A of the circuit branch member (circuit protection member) 21 are fastened together.
  • the frame 40 shown here has a first sub-tube portion 43A as a sub-tube portion 43 having an opening (one opening 43a) that opens in the same direction as one opening 41a in the tube portion 41 (FIGS. 1 to 3, 5, 6, 9, and 12).
  • This first sub-tube portion 43A accommodates the first power source side electrical connection structure 70A inside the tube, and allows the male screw portion of the male screw member 71 in this first power source side electrical connection structure 70A to protrude from one opening 43a.
  • This first sub-tube portion 43A is provided in the recess 42 of the frame 40.
  • the tube wall 41c of the tube portion 41 has a first notch 44A as a notch 44 that connects the inside of the tube itself with the inside of the tube of the first sub-tube portion 43A and allows the second electrical connection portion 62 of the first internal conductive member 60A to protrude outside the frame 40 outside the tube portion 41 (FIGS. 5 and 6).
  • the block 30 is provided with a first protruding block portion 32A that protrudes from the first notch 44A to the outside of the tube portion 41 and is housed within the tube of the first sub-tube portion 43A as a protruding block portion 32 to which the screw holding member 72 of the first power supply side electrical connection structure 70A is attached (FIGS. 5, 6, and 8).
  • the second power supply connection portion 22B physically and electrically connects the power supply side terminal fitting TB at the end of the second power supply side wire WB2 to the second electrical connection portion 62 of the second internal conductive member 60B.
  • the electrical connection box 1 is equipped with a power supply side electrical connection structure 70B as the power supply side electrical connection structure 70, which physically and electrically connects the power supply side terminal fitting TB at the end of the second power supply side wire WB2, the second electrical connection portion 62 of the second internal conductive member 60B, and the second power supply connection portion 22B of the circuit branch member (circuit protection member) 21 among each other ( Figures 2, 5, and 8).
  • This second power supply side electrical connection structure 70B is formed by inserting the male screw portion of the male screw member 71 into the through holes TBa, 62a, 22a of the power supply side terminal fitting TB at the end of the second power supply side wire WB2, the second electrical connection portion 62 of the second internal conductive member 60B, and the second power supply connection portion 22B of the circuit branch member (circuit protection member) 21, and screwing the female screw member 73 into the male screw portion, thereby fastening together the power supply side terminal fitting TB, the second electrical connection portion 62 of the second internal conductive member 60B, and the second power supply connection portion 22B of the circuit branch member (circuit protection member) 21.
  • the frame 40 shown here has a second sub-tube portion 43B as the sub-tube portion 43, which is provided with an opening (one opening 43a) that opens in the same direction as one opening 41a in the tube portion 41 (FIGS. 1 to 3, 5, 9, and 12).
  • This second sub-tube portion 43B accommodates the second power source side electrical connection structure 70B inside the tube, and allows the male screw portion of the male screw member 71 in this second power source side electrical connection structure 70B to protrude from one opening 43a.
  • This second sub-tube portion 43B is provided in the recess 42 of the frame 40.
  • the tube wall 41c of the tube portion 41 has a second notch 44B as a notch 44 that connects the inside of the tube itself with the inside of the tube of the second sub-tube portion 43B and allows the second electrical connection portion 62 of the second internal conductive member 60B to protrude outside the frame 40 outside the tube portion 41 (FIG. 5).
  • the block 30 is provided with a second protruding block portion 32B that protrudes from the second notch 44B to the outside of the tube portion 41 and is housed within the tube of the second sub-tube portion 43B as a protruding block portion 32 to which the screw holding member 72 of the second power supply side electrical connection structure 70B is attached (FIGS. 5 and 8).
  • the male screw portion of the male screw member 71 of the first power source side electrical connection structure 70A is inserted into the through hole 22a of the first power source connection portion 22A to assemble the first power source connection portion 22A to the first power source side electrical connection structure 70A
  • the male screw portion of the male screw member 71 of the second power source side electrical connection structure 70B is inserted into the through hole 22a of the second power source connection portion 22B to assemble the second power source connection portion 22B to the second power source side electrical connection structure 70B.
  • the male screw portion of the male screw member 71 of the first power source side electrical connection structure 70A is inserted into the through hole TBa of the power source side terminal fitting TB of the first power source side electric wire WB1 to assemble the power source side terminal fitting TB to the first power source side electrical connection structure 70A
  • the male screw portion of the male screw member 71 of the second power source side electrical connection structure 70B is inserted into the through hole TBa of the power source side terminal fitting TB of the second power source side electric wire WB2 to assemble the power source side terminal fitting TB to the second power source side electrical connection structure 70B.
  • the female screw members 73 are screwed into the male screw portions of the male screw members 71 to fasten together the power supply terminal fittings TB of the first power supply side wire WB1, the second electrical connection portions 62 of the two first internal conductive members 60A, and the first power supply connection portion 22A of the circuit branch member (circuit protection member) 21, and also fasten together the power supply terminal fittings TB of the second power supply side wire WB2, the second electrical connection portion 62 of the second internal conductive member 60B, and the second power supply connection portion 22B of the circuit branch member (circuit protection member) 21.
  • the two power supply side terminal fittings TB and the circuit branch component (circuit protection component) 20 are assembled to the block 30 via the first power supply side electrical connection structure 70A and the second power supply side electrical connection structure 70B.
  • first cover member 51 One of the openings 43a in each of the first and second sub-tube portions 43A and 43B is covered by a first cover member 51 together with the two power source side terminal fittings TB, the second electrical connection portions 62 of the two first and second internal conductive members 60A and 60B, the first and second power source connection portions 22A and 22B of the circuit branch member (circuit protection member) 21, the first and second power source side electrical connection structures 70A and 70B, and is housed within this first cover member 51.
  • the second cover member 52 has a blocking portion 53, which is a first blocking portion 53A that blocks the other opening 43b of the first sub-tube portion 43A so as not to be exposed to the outside of the frame 40, and a second blocking portion 53B that blocks the other opening 43b of the second sub-tube portion 43B so as not to be exposed to the outside of the frame 40 (Figs. 1, 3, 9 and 13).
  • the first blocking portion 53A and the second blocking portion 53B may be a single plate-like wall portion that blocks the other opening 43b together with the first notch 44A and the second notch 44B from the outside of the frame 40, or may be composed of a plurality of walls that surround and cover the other opening 43b together with the first notch 44A and the second notch 44B from the outside of the frame 40.
  • the first split cover 52A is attached to the periphery of the other opening 41b of the cylinder 41, in which the first sub-cylinder portion 43A and the second sub-cylinder portion 43B are provided. Therefore, the first blocking portion 53A and the second blocking portion 53B are provided on the first split cover 52A.
  • the first power supply connection portion 22A is assembled to the first power supply side electrical connection structure 70A and the second power supply connection portion 22B is assembled to the second power supply side electrical connection structure 70B, and the exposed surfaces 23b of all the load connection portions 23 are arranged facing the opposing wall 41f, and the exposed surfaces 23b are interposed between the holding portion 26a of the resin member 26 and the opposing wall 41f (FIG. 7). Therefore, all the load side electrical connection structures 75 physically and electrically connect the load side terminal fittings TL of the terminals of the load side electric wires WL to the load connection portions 23 of the circuit branch component (circuit protection member) 21 on the opposing wall 41f side rather than the holding portion 26a. Therefore, in this electrical connection box 1, when the first cover member 51 is removed, the load side electrical connection structure 75, the load side terminal fittings TL, and the load connection portions 23 of the circuit branch component (circuit protection member) 21 can be prevented from coming into contact with other components.
  • the first power supply connection portion 22A of the circuit branch component (circuit protection component) 20 assembled to the first power supply side electrical connection structure 70A and the second power supply connection portion 22B of the circuit branch component (circuit protection component) 20 assembled to the second power supply side electrical connection structure 70B the first power supply connection portion 22A and the second power supply connection portion 22B exposed from the resin member 26 are disposed on the opposing wall 41f side of the resin member 26 (FIG. 6).
  • the first power supply side electrical connection structure 70A physically and electrically connects the power supply side terminal fitting TB at the end of the first power supply side wire WB1, the second electrical connection portions 62 of the two first internal conductive members 60A, and the first power supply connection portion 22A of the circuit branch component (circuit protection component) 21 on the opposing wall 41f side of the resin member 26.
  • the second power source side electrical connection structure 70B physically and electrically connects the power source side terminal fitting TB at the end of the second power source side electric wire WB2, the second electrical connection portion 62 of the second internal conductive member 60A, and the second power source connection portion 22B of the circuit branch member (circuit protection member) 21 on the opposing wall body 41f side of the resin member 26.
  • this electrical connection box 1 when the first cover member 51 is removed, it is possible to prevent contact of other parts from the side with the first power source side electrical connection structure 70A, the second power source side electrical connection structure 70B, the power source side terminal fitting TB at the end of the first power source side electric wire WB1, the power source side terminal fitting TB at the end of the second power source side electric wire WB2, the second electrical connection portions 62 of each of the two first internal conductive members 60A, the second electrical connection portion 62 of the second internal conductive member 60A, and the first power source connection portion 22A and the second power source connection portion 22B of the circuit branch member (circuit protection member) 21.
  • the circuit branch component (circuit protection component) 20 is disposed outside the frame 40 outside the cylindrical portion 41, so that it is possible to prevent overloading of the power supply side wires WB (first power supply side wire WB1, second power supply side wire WB2) and load side wires WL connected to this circuit branch component (circuit protection component) 20 on the surroundings inside the housing.
  • the power supply side wires WB (first power supply side wire WB1, second power supply side wire WB2) and load side wires WL are less likely to bend as the wire diameter increases, so it is possible to prevent overloading of the power supply side wires WB and the like on the surroundings inside the housing.
  • this electrical connection box 1 by preventing overloading of the power supply side wires WB and the like on the second cover member 52 inside the housing, deformation of the second cover member 52 can be suppressed.
  • this electrical connection box 1 can improve the accommodation of other electric wires within the cylinder of the tube portion 41 by routing the power supply side electric wires WB, etc., which are difficult to bend, outside the frame 40.
  • this electrical connection box 1 can suppress the rise in temperature within the housing because the heat generated by the power supply side electric wires WB, etc., is not trapped inside the housing by routing the power supply side electric wires WB, etc. outside the frame 40.
  • this electrical connection box 1 can suppress contact of other components with the connection points because the physical and electrical connection points (first power supply side electrical connection structure 70A, second power supply side electrical connection structure 70B, etc.) in the circuit branch component (circuit protection component) 20 are arranged closer to the housing than the resin member 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Connection Or Junction Boxes (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

筒部（４１）の筒外でフレーム（４０）の外に配置され、樹脂部材（２６）に内在させた導電性の回路分岐部材（２１）を有する回路分岐部品（２０）を備え、筒部の筒壁（４１ｃ）は、筒外で回路分岐部品に対向配置させる対向壁体（４１ｆ）を有し、樹脂部材は、回路分岐部材の負荷接続部（２３）の露出面（２３ｂ）を露出させた状態で当該負荷接続部を保持する保持部（２６ａ）を有し、回路分岐部品は、負荷接続部の露出面を対向壁体と向かい合わせに配置して、保持部と対向壁体との間に露出面を介在させること。

Description

電気接続箱
　本発明は、電気接続箱に関する。
　電気接続箱においては、外部の電源と負荷との間に介在させるリレー等の電子部品が筐体に収容されている。この電気接続箱においては、その電子部品に対して電気的に接続された電線を筐体の中で引き回し、この電線を筐体の外に引き出して電源や負荷に電気的に接続させる。例えば、この従来の電気接続箱については、下記の特許文献１に開示されている。
特開２０１４－９３８８８号公報
　ところで、近年の車両においては、軽量化対応で電線の芯線の素材を変更するために電線径を太くしたり、大電流対応で電線径を太くしたりするなど、折り曲げ難い電線の採用が増えている。このため、電気接続箱においては、筐体の中の狭い空間での電線の引き回しが難しく、筐体内でその電線から周辺に過荷重が加えられてしまう可能性がある。電気接続箱においては、例えば、そのような電線と当該電線に繋がる部品とを筐体の外に配置することによって、その電線による筐体内での過荷重を抑えることができる。しかしながら、電気接続箱においては、その部品を筐体の外に配置することで、この部品とこれに繋がる電線との間で物理的に接続された電気接続箇所を筐体の外に配置した場合、筐体の外でその周辺部品の組付け作業やメンテナンス作業を行う際に、その電気接続箇所に金属製の部品や工具等の他部品が触れてしまう可能性がある。
　そこで、本発明は、筐体の外の電気接続箇所への他部品の接触を抑え得る電気接続箱を提供することを、その目的とする。
　本発明は、電子部品と、前記電子部品を外部電源に電気接続させる内部導電部材と、少なくとも一端に開口が設けられた筒壁から成り、その筒内に前記電子部品及び前記内部導電部材を収容し且つ保持する筒部を有するフレームと、前記筒部の前記開口を塞ぐカバー部材と、前記筒部の筒外で前記フレームの外に配置され、樹脂部材に内在させた導電性の回路分岐部材を前記外部電源と外部負荷との間に介在させる回路分岐部品と、を備え、前記内部導電部材は、前記筒部の筒内で前記電子部品に対して物理的且つ電気的に接続させる第１電気接続部と、第２電気接続部と、を有し、前記回路分岐部材は、前記樹脂部材の外に露出させ且つ前記筒部の筒外で前記フレームの外に配置され、前記外部電源に電気接続された電源側電線の端末の電源側端子金具と前記内部導電部材の前記第２電気接続部を物理的且つ電気的に接続させる電源接続部と、前記樹脂部材の外に露出させ且つ前記筒部の筒外で前記フレームの外に配置され、前記外部負荷に電気接続された負荷側電線の端末の負荷側端子金具を物理的且つ電気的に接続させる負荷接続部と、を有し、前記筒部の前記筒壁は、筒外で前記回路分岐部品に対向配置させる対向壁体を有し、前記樹脂部材は、前記負荷接続部の露出面を露出させた状態で当該負荷接続部を保持する保持部を有し、前記回路分岐部品は、前記負荷接続部の前記露出面を前記対向壁体と向かい合わせに配置して、前記保持部と前記対向壁体との間に前記露出面を介在させることを特徴とする。
　本発明に係る電気接続箱は、回路分岐部品を筒部の筒外でフレームの外に配置することによって、その回路分岐部品に繋がった電線による筐体内での過荷重を抑えることができる。そして、この電気接続箱においては、その回路分岐部品における物理的且つ電気的な接続箇所（第１電源側電気接続構造や第２電源側電気接続構造等）が樹脂部材よりも筐体側に配置されているので、その接続箇所に対する他部品の接触を抑止することができる。
図１は、実施形態の電気接続箱を示す斜視図である。 図２は、実施形態の電気接続箱（第１カバー部材無し）をフレームの一方の開口側から見た平面図である。 図３は、実施形態の電気接続箱（第１カバー部材無し）をフレームの側方から見た平面図である。 図４は、実施形態の電気接続箱（第１カバー部材と第２カバー部材無し）を示す分解斜視図である。 図５は、実施形態の電気接続箱（第１カバー部材と第２カバー部材無し）を別角度から見た分解斜視図である。 図６は、図３のＸ１－Ｘ１線断面図である。 図７は、図３のＸ２－Ｘ２線断面図である。 図８は、ブロックと、これに収容される内部導電部材及び雄螺子部材と、を示す分解斜視図である。 図９は、実施形態の電気接続箱（第１カバー部材無し）におけるフレームと第２カバー部材の分解斜視図である。 図１０は、負荷側電気接続構造について説明する分解斜視図である。 図１１は、回路保護部材を示す斜視図である。 図１２は、フレームを示す斜視図である。 図１３は、第１分割カバーを示す斜視図である。
　以下に、本発明に係る電気接続箱の実施形態を図面に基づいて詳細に説明する。尚、この実施形態によりこの発明が限定されるものではない。
［実施形態］
　本発明に係る電気接続箱の実施形態の１つを図１から図１３に基づいて説明する。
　図１から図７の符号１は、本実施形態の電気接続箱を示す。この電気接続箱１は、自動車等の車両に搭載され、その車両における二次電池等の外部電源Ｂと電源分配対象物（例えば、給電対象となる補記類等）等の外部負荷Ｌとの間に介在させることによって、その外部電源Ｂの電力を外部負荷Ｌに供給する（図１）。
　電気接続箱１は、リレーやヒューズ等の電子部品１０を備え（図２）、この電子部品１０を外部電源Ｂと外部負荷Ｌとの間に介在させる。更に、この電気接続箱１は、外部電源Ｂと外部負荷Ｌとの間に介在させる回路分岐部品２０を備える（図１から図５）。この回路分岐部品２０は、外部電源Ｂからの電力を複数の外部負荷Ｌへと分配させるための部品である。電気接続箱１は、電子部品１０を複数備える一方、回路分岐部品２０を少なくとも１つ備える。
　この電気接続箱１は、電子部品１０を保持するブロック３０と、このブロック３０を筒内に収容し且つ保持する両端開口（開口４１ａ，４１ｂ）の筒壁４１ｃから成る筒部４１を有するフレーム４０と、を備える（図１から図８）。そして、この電気接続箱１は、その筒部４１における一方の開口４１ａを塞ぐカバー部材（以下、「第１カバー部材」という。）５１と、その筒部４１における他方の開口４１ｂを塞ぐカバー部材（以下、「第２カバー部材」という。）５２と、を備える（図１、図３及び図９）。そのブロック３０とフレーム４０と第１カバー部材５１と第２カバー部材５２は、合成樹脂等の絶縁性材料で成形される。
　この電気接続箱１においては、フレーム４０と第１カバー部材５１と第２カバー部材５２とで筐体が構成され、この筐体の中で電子部品１０に電気的に接続された電線（図示略）がその中を引き回されて筐体の外に開口から引き出される。
　フレーム４０においては、他方の開口４１ｂから筒部４１の筒内にブロック３０が挿入される。このフレーム４０は、１つの筒部４１で構成されている場合、その外枠を成す外壁の全てが筒部４１の筒壁４１ｃで形成される。また、フレーム４０は、一方の開口４１ａの開口方向をそれぞれに合わせ且つ他方の開口４１ｂの開口方向をそれぞれに合わせた複数の筒部４１の組み合わせで構成されている場合、その外枠を成す外壁が複数の筒部４１における筒壁４１ｃの一部の組み合わせで形成される。つまり、フレーム４０の外枠を成す外壁は、その全て又は一部が筒部４１の筒壁４１ｃで形成されている。
　ここで示すフレーム４０は、２つの筒部４１を組み合わせたものとなっており、一方の開口４１ａを車両上方に向けて車両に搭載される。ここで示す第１カバー部材５１は、その筒部４１毎に設ける。また、ここで示す第２カバー部材５２は、相互間で組み付けられる第１分割カバー５２Ａと第２分割カバー５２Ｂに分割されており、この第１分割カバー５２Ａと第２分割カバー５２Ｂとを組み付けた形で２つの筒部４１におけるそれぞれの他方の開口４１ｂを塞ぐ（図１、図３及び図９）。
　この電気接続箱１は、電子部品１０を外部電源Ｂに電気接続させ、かつ、この電子部品１０と一緒にブロック３０に保持される内部導電部材６０を備える（図５、図６及び図８）。この内部導電部材６０は、筒部４１の筒内で電子部品１０に対して物理的且つ電気的に接続させる第１電気接続部６１を有する（図８）。この第１電気接続部６１は、電子部品１０毎に設けられている。また、この内部導電部材６０は、外部電源Ｂに電気接続させる第２電気接続部６２を有する（図５、図６及び図８）。この内部導電部材６０においては、複数の第１電気接続部６１と第２電気接続部６２とが連結部６３で繋がれている（図８）。この内部導電部材６０は、その連結部６３を筒部４１の筒外まで延在させ、その延在させた先のフレーム４０の外で連結部６３に第２電気接続部６２が連結された形状を採っている。つまり、第２電気接続部６２は、筒部４１の筒外でフレーム４０の外に配置される。
　この内部導電部材６０は、所謂バスバであり、例えば、金属板を母材にして板状に成形される。ブロック３０は、筒部４１の筒内で電子部品１０と内部導電部材６０を保持するブロック本体３１を有している（図１、図２、図４、図５、図８及び図９）。
　尚、電気接続箱１は、ブロック３０と一体になったフレーム４０を備えるものであってもよい。このフレーム４０とは、少なくとも一端に開口４１ａが設けられた筒壁４１ｃから成り、その筒内に電子部品１０及び内部導電部材６０を収容し且つ保持する筒部４１を有するものである。例えば、電気接続箱１は、フレーム４０が両端開口（開口４１ａ，４１ｂ）の筒壁４１ｃから成る筒部４１を有するものであれば、先の例示と同じように第１カバー部材５１と第２カバー部材５２を備える。一方、電気接続箱１は、フレーム４０が開口４１ａのみの筒壁４１ｃから成る筒部４１（つまり、開口４１ｂが塞がれている筒部４１）を有するものであれば、第１カバー部材５１だけを備える。
　回路分岐部品２０は、筒部４１の筒外でフレーム４０の外に配置される。そして、この回路分岐部品２０は、外部電源Ｂと外部負荷Ｌとの間に介在させる導電性の回路分岐部材２１を備える（図４、図５、図１０及び図１１）。
　ここで、この回路分岐部品２０は、後述する電源接続部２２と負荷接続部２３を少なくとも有するものである。そして、この回路分岐部品２０は、電源接続部２２と複数の負荷接続部２３とを電気的に繋ぐ後述する連結部２５を有している。但し、ここで示す回路分岐部品２０は、電源接続部２２と負荷接続部２３に加えて、外部電源Ｂと外部負荷Ｌとの間の過電流を遮断するための後述する可溶部２４を有しており、これに伴い後述する連結部２５を有している。つまり、ここでは、回路分岐部品２０の一例として、外部電源Ｂと外部負荷Ｌとの間の過電流を遮断するための回路保護部品を挙げている。よって、ここで示す回路分岐部品（回路保護部品）２０は、回路分岐部材２１として、外部電源Ｂと外部負荷Ｌとの間に介在させる導電性の回路保護部材を備えている。
　この回路分岐部材（回路保護部材）２１は、筒部４１の筒外でフレーム４０の外に配置され、外部電源Ｂに電気接続された電源側電線ＷＢの端末の電源側端子金具Ｔと内部導電部材６０の第２電気接続部６２を物理的且つ電気的に接続させる電源接続部２２を有する（図４から図６、図１０及び図１１）。
　また、回路分岐部材（回路保護部材）２１は、筒部４１の筒外でフレーム４０の外に配置され、外部負荷Ｌに電気接続された負荷側電線ＷＬの端末の負荷側端子金具ＴＬを物理的且つ電気的に接続させる負荷接続部２３と、電源接続部２２と負荷接続部２３との間に介在させ、過電流が流れた際に溶断させる可溶部２４と、を有する（図１０及び図１１）。この回路分岐部材（回路保護部材）２１においては、その負荷接続部２３と可溶部２４が外部負荷Ｌ毎に設けられている。そして、この回路分岐部材（回路保護部材）２１は、電源接続部２２と可溶部２４とを連結させる連結部２５を有する（図１１）。この連結部２５には、電源接続部２２と外部負荷Ｌ毎の可溶部２４とが連結される。
　この回路分岐部材（回路保護部材）２１は、所謂バスバであり、例えば、金属板を母材にして板状に成形される。この回路分岐部品（回路保護部品）２０は、樹脂部材２６に内在させた回路分岐部材（回路保護部材）２１を外部電源Ｂと外部負荷Ｌとの間に介在させる。このため、この回路分岐部品（回路保護部品）２０においては、電源接続部２２と負荷接続部２３と可溶部２４とを樹脂部材２６の外に露出させる（図７、図１０及び図１１）。そこで、この回路分岐部品（回路保護部品）２０においては、電源接続部２２と負荷接続部２３と可溶部２４とを露出させた状態で回路分岐部材（回路保護部材）２１に対して合成樹脂材料で樹脂部材２６が一体成形される。そして、この回路分岐部品（回路保護部品）２０においては、露出している可溶部２４を覆い隠す合成樹脂材料から成る透明の樹脂カバー２７が樹脂部材２６に対して組み付けられる（図７及び図１０）。
　電気接続箱１は、電源側電線ＷＢの端末の電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２とを相互間で物理的且つ電気的に接続させる電源側電気接続構造７０を備える（図２、図５、図６及び図８）。この電源側電気接続構造７０は、筒部４１の筒外でフレーム４０の外に配置される。よって、この電源側電気接続構造７０は、フレーム４０の外で電源側電線ＷＢの端末の電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２とを物理的且つ電気的に接続させる。
　ここで示す電源側電気接続構造７０は、雄螺子部材７１と、雄螺子部を露出させた状態で雄螺子部材７１を保持する螺子保持部材７２と、雄螺子部材７１の雄螺子部に螺合させる雌螺子部材７３と、を備える（図５、図６及び図８）。この電源側電気接続構造７０は、電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２とに各々設けた貫通孔ＴＢａ，６２ａ，２２ａに雄螺子部材７１の雄螺子部を挿通させ、その雄螺子部に雌螺子部材７３を螺合させることによって、その電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２とを共締め固定する（図５、図６及び図８）。
　ここで、この電源側電気接続構造７０においては、雄螺子部の螺子軸を鉛直方向（つまり、車両上下方向）に合わせ、かつ、この雄螺子部を鉛直上方（つまり、車両上方）に向けて螺子保持部材７２から突出させた形で雄螺子部材７１を配置する。
　また、電気接続箱１は、負荷側電線ＷＬの端末の負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３とを相互間で物理的且つ電気的に接続させる負荷側電気接続構造７５を備える（図４、図７及び図１０）。この負荷側電気接続構造７５は、筒部４１の筒外でフレーム４０の外に配置される。よって、この負荷側電気接続構造７５は、フレーム４０の外で負荷側電線ＷＬの端末の負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３とを物理的且つ電気的に接続させる。
　ここで示す負荷側電気接続構造７５は、雄螺子部材７６と、この雄螺子部材７６の雄螺子部に螺合させる雌螺子部材７７と、を備える（図７及び図１０）。雄螺子部材７６には、回路分岐部材（回路保護部材）２１の負荷接続部２３の貫通孔２３ａ（図１１）に雄螺子部材７６の雄螺子部を挿通させ、かつ、その雄螺子部を露出させた状態で、樹脂部材２６が一体成形されている。また、その樹脂部材２６は、負荷接続部２３の露出面２３ｂを露出させた状態で当該負荷接続部２３を保持する保持部２６ａを有している（図３から図５、図７及び図１０）。この負荷側電気接続構造７５は、負荷側端子金具ＴＬに設けた貫通孔ＴＬａに雄螺子部材７６の雄螺子部を挿通させ、その雄螺子部に雌螺子部材７７を螺合させることによって、その負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３とを共締め固定する（図７及び図１０）。これにより、この負荷側電気接続構造７５は、負荷側端子金具ＴＬを負荷接続部２３の露出面２３ｂに密着させ、その相互間を物理的且つ電気的に接続させる。
　具体的に、回路分岐部品（回路保護部品）２０は、フレーム４０の外で次のように配置される。
　フレーム４０は、その外枠を成す外壁を筒部４１の筒内側に凹ませて、回路分岐部品（回路保護部品）２０を配置させる凹部４２を有する（図２、図３、図５及び図１２）。この凹部４２は、回路分岐部品（回路保護部品）２０の体格と同等以上の容積を有し、かつ、この回路分岐部品（回路保護部品）２０を食み出させずに収め得るものとして形成することが望ましい。例えば、筒部４１の筒壁４１ｃは、筒外で回路分岐部品（回路保護部品）２０に対向配置させる対向壁体４１ｆを有している。凹部４２は、この対向壁体４１ｆを筒内側に凹ませて形成されている。
　また、フレーム４０は、筒部４１における一方の開口４１ａと同じ向きに口を開けた開口４３ａが設けられ、筒部４１の筒壁４１ｃから筒部４１の筒外でフレーム４０の外に向けて膨出させた形の副筒部４３を有する（図１から図３、図５、図９及び図１２）。この副筒部４３は、フレーム４０の凹部４２の中に設けられている。ここで示す副筒部４３は、両端開口（開口４３ａ，４３ｂ）の筒体として形成されている。よって、この副筒部４３においては、一方の開口４３ａが筒部４１の一方の開口４１ａ側に配置され、他方の開口４３ｂが筒部４１の他方の開口４１ｂ側に配置される。
　この副筒部４３の筒内には、電源側電気接続構造７０を設ける。この副筒部４３においては、電源側電気接続構造７０の螺子保持部材７２を筒内に収容し、かつ、この電源側電気接続構造７０における雄螺子部材７１の雄螺子部を一方の開口４３ａから突出させる。よって、内部導電部材６０の第２電気接続部６２は、この副筒部４３の一方の開口４３ａから突出させた雄螺子部材７１の雄螺子部を貫通孔６２ａに挿通させる。そこで、筒部４１の筒壁４１ｃは、自身の筒内と副筒部４３の筒内とを連通させ、かつ、内部導電部材６０の第２電気接続部６２を筒部４１の筒外でフレーム４０の外に突出させる切欠き４４を有している（図５及び図６）。この切欠き４４は、他方の開口４１ｂ側の端部から一方の開口４１ａに向けて筒部４１の筒壁４１ｃを切り欠いた切欠きである。
　ブロック３０は、その切欠き４４から筒部４１の筒外に突出させ、かつ、副筒部４３の筒内に収容させる突出ブロック部３２を有する（図５、図６及び図８）。この突出ブロック部３２には、螺子保持部材７２が組み付けられ、これにより電源側電気接続構造７０が保持される。
　この電気接続箱１においては、内部導電部材６０をブロック本体３１に保持させ且つ電源側電気接続構造７０を突出ブロック部３２に保持させた状態で、内部導電部材６０の第２電気接続部６２の貫通孔６２ａに電源側電気接続構造７０の雄螺子部材７１の雄螺子部を挿通させている。この電気接続箱１においては、内部導電部材６０が保持されたブロック本体３１を他方の開口４１ｂから筒部４１の筒内に挿入し、かつ、電源側電気接続構造７０が保持された突出ブロック部３２を内部導電部材６０の第２電気接続部６２と共に他方の開口４３ｂから副筒部４３の筒内に挿入する。
　この電気接続箱１においては、その雄螺子部材７１の雄螺子部を貫通孔２２ａに差し込んで回路分岐部材（回路保護部材）２１の電源接続部２２を電源側電気接続構造７０に組み付け、更に、この雄螺子部材７１の雄螺子部を貫通孔ＴＢａに差し込んで電源側端子金具ＴＢを電源側電気接続構造７０に組み付ける。そして、この電気接続箱１においては、その雄螺子部材７１の雄螺子部に雌螺子部材７３を螺合して、電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２とを共締め固定する。この電気接続箱１においては、電源側端子金具ＴＢと回路分岐部品（回路保護部品）２０が電源側電気接続構造７０を介してブロック３０に組み付けられる。
　副筒部４３の一方の開口４３ａは、電源側端子金具ＴＢ、内部導電部材６０の第２電気接続部６２、回路分岐部材（回路保護部材）２１の電源接続部２２及び電源側電気接続構造７０と一緒に、フレーム４０に組み付けた第１カバー部材５１で覆われて、この第１カバー部材５１の中に収められる。また、この第１カバー部材５１は、フレーム４０の凹部４２を覆っており、この凹部４２の中の回路分岐部品（回路保護部品）２０を凹部４２との間の空間内に収める。
　副筒部４３の他方の開口４３ｂは、フレーム４０に組み付けた第２カバー部材５２に設けた閉塞部５３によって、フレーム４０の外に露出させぬように塞がれる（図１、図３、図９及び図１３）。
　ここで、回路分岐部品（回路保護部品）２０は、電源接続部２２を電源側電気接続構造７０に組み付けた状態で、負荷接続部２３の露出面２３ｂを対向壁体４１ｆと向かい合わせに配置して、樹脂部材２６の保持部２６ａと対向壁体４１ｆとの間に露出面２３ｂを介在させる（図７）。この回路分岐部品（回路保護部品）２０は、全ての負荷接続部２３の露出面２３ｂを対向壁体４１ｆと向かい合わせに配置している。つまり、この回路分岐部品（回路保護部品）２０においては、その保持部２６ａよりも対向壁体４１ｆ側に全ての負荷側電気接続構造７５を設ける。このため、この負荷側電気接続構造７５は、負荷側電線ＷＬの端末の負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３とを保持部２６ａよりも対向壁体４１ｆ側で物理的且つ電気的に接続させる。これにより、この電気接続箱１においては、負荷側電気接続構造７５を樹脂部材２６の保持部２６ａと対向壁体４１ｆとの間に隠した状態で回路分岐部品（回路保護部品）２０が組み付けられる。よって、この電気接続箱１においては、第１カバー部材５１が取り外されているときに、その負荷側電気接続構造７５と負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３に対する他部品の接触を抑止することができる。従って、この電気接続箱１は、例えば、周辺部品の組付け作業や周辺部品のメンテナンス作業を行う際に、負荷側電気接続構造７５等に対する金属製の部品や工具等の他部品の接触を抑止できるので、その他部品と負荷側電気接続構造７５等との間の通電を回避することができる。
　また、回路分岐部品（回路保護部品）２０は、電源接続部２２を電源側電気接続構造７０に組み付けた状態で、樹脂部材２６から露出させた電源接続部２２を当該樹脂部材２６よりも対向壁体４１ｆ側に配置する（図６）。つまり、この回路分岐部品（回路保護部品）２０においては、樹脂部材２６よりも対向壁体４１ｆ側に電源側電気接続構造７０を設ける。このため、この電源側電気接続構造７０は、電源側電線ＷＢの端末の電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２とを樹脂部材２６よりも対向壁体４１ｆ側で物理的且つ電気的に接続させる。これにより、この電気接続箱１においては、電源側電気接続構造７０を樹脂部材２６と対向壁体４１ｆとの間に隠した状態で回路分岐部品（回路保護部品）２０が組み付けられる。よって、この電気接続箱１においては、第１カバー部材５１が取り外されているときに、その電源側電気接続構造７０と電源側電線ＷＢの端末の電源側端子金具ＴＢと内部導電部材６０の第２電気接続部６２と回路分岐部材（回路保護部材）２１の電源接続部２２に対する側方からの他部品の接触を抑止することができる。従って、この電気接続箱１は、例えば、周辺部品の組付け作業や周辺部品のメンテナンス作業を行う際に、電源側電気接続構造７０等に対する金属製の部品や工具等の他部品の側方からの接触を抑止できるので、その他部品と負荷側電気接続構造７５等との間の通電を回避することができる。
　この電気接続箱１において、電源側電線ＷＢと負荷側電線ＷＬは、その全ての芯線が銅又は銅合金で成形されたものであってもよい。但し、この電源側電線ＷＢと負荷側電線ＷＬは、軽量化を図るべく、その内の少なくとも１本の芯線がアルミニウム又はアルミニウム合金で成形されたものであることが望ましい。例えば、電源側電線ＷＢと負荷側電線ＷＬは、その全ての芯線がアルミニウム又はアルミニウム合金で成形されたものであってもよく、少なくとも１本の芯線がアルミニウム又はアルミニウム合金で成形され、残りの芯線が銅又は銅合金で成形されたものであってもよい。
　電源側電線ＷＢと負荷側電線ＷＬは、その芯線がアルミニウム又はアルミニウム合金で成形されている場合、その芯線が銅又は銅合金で成形されているものと比較して、軽量化を図れるが、大電流対応に伴い太く且つ硬いものとなり、曲げ難くなっている。しかしながら、この電気接続箱１においては、回路分岐部品（回路保護部品）２０を筒部４１の筒外でフレーム４０の外に配置して、そのような曲げ難い電源側電線ＷＢや負荷側電線ＷＬをフレーム４０の外で配策する。このため、この電気接続箱１は、その電源側電線ＷＢ等による筐体内での周辺への過荷重を抑止することができ、また、筒部４１の筒内での他の電線の収容性を向上させることができる。
　具体的に、ここで示す電気接続箱１は、内部導電部材６０として、第１内部導電部材６０Ａと第２内部導電部材６０Ｂを備えており、この第１内部導電部材６０Ａと第２内部導電部材６０Ｂをブロック３０に保持させる（図５及び図８）。ここでは、内部導電部材６０として、２種類の第１内部導電部材６０Ａを備えている。
　また、ここで示す回路分岐部材（回路保護部材）２１は、電源接続部２２として、第１電源接続部２２Ａと第２電源接続部２２Ｂを備えており、この第１電源接続部２２Ａと第２電源接続部２２Ｂを電源側電線ＷＢとしての第１電源側電線ＷＢ１と第２電源側電線ＷＢ２とに各々電気的に接続させる（図５、図１０及び図１１）。この回路分岐部材（回路保護部材）２１においては、連結部２５によって第１電源接続部２２Ａと第２電源接続部２２Ｂとが連結され、この連結部２５を介して可溶部２４が第１電源接続部２２Ａと第２電源接続部２２Ｂとに連結される。つまり、可溶部２４は、第１電源接続部２２Ａと負荷接続部２３との間に介在させ、かつ、第２電源接続部２２Ｂと負荷接続部２３との間に介在させている。
　第１電源側電線ＷＢ１は、回路分岐部材（回路保護部材）２１から見て第１電源接続部２２Ａと外部電源Ｂとの間に介在させて、その第１電源接続部２２Ａを外部電源Ｂに電気接続させる。また、第２電源側電線ＷＢ２は、筐体の外に配置されているオルタネータやＤＣ－ＤＣコンバータ等の外部電気部品Ｐに電気接続され、かつ、回路分岐部材（回路保護部材）２１と第１電源側電線ＷＢ１を介して外部電源Ｂに電気接続される。つまり、この第２電源側電線ＷＢ２は、回路分岐部材（回路保護部材）２１と第１電源側電線ＷＢ１を介して外部電気部品Ｐを外部電源Ｂに電気接続させる。
　第１電源接続部２２Ａは、第１電源側電線ＷＢ１の端末の電源側端子金具ＴＢと第１内部導電部材６０Ａの第２電気接続部６２を物理的且つ電気的に接続させる。電気接続箱１は、電源側電気接続構造７０として、その第１電源側電線ＷＢ１の端末の電源側端子金具ＴＢと第１内部導電部材６０Ａの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａとを相互間で物理的且つ電気的に接続させる第１電源側電気接続構造７０Ａを備える（図２、図５、図６及び図８）。この第１電源側電気接続構造７０Ａは、第１電源側電線ＷＢ１の端末の電源側端子金具ＴＢと第１内部導電部材６０Ａの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａのそれぞれの貫通孔ＴＢａ，６２ａ，２２ａに雄螺子部材７１の雄螺子部を挿通させ、その雄螺子部に雌螺子部材７３を螺合させることによって、その電源側端子金具ＴＢと第１内部導電部材６０Ａの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａとを共締め固定する。ここでは、電源側端子金具ＴＢと２つの第１内部導電部材６０Ａのそれぞれの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａとを共締め固定している。
　ここで示すフレーム４０は、副筒部４３として、筒部４１における一方の開口４１ａと同じ向きに口を開けた開口（一方の開口４３ａ）が設けられた第１副筒部４３Ａを有している（図１から図３、図５、図６、図９及び図１２）。この第１副筒部４３Ａは、第１電源側電気接続構造７０Ａを筒内に収容し、かつ、この第１電源側電気接続構造７０Ａにおける雄螺子部材７１の雄螺子部を一方の開口４３ａから突出させる。この第１副筒部４３Ａは、フレーム４０の凹部４２の中に設けられている。筒部４１の筒壁４１ｃには、切欠き４４として、自身の筒内と第１副筒部４３Ａの筒内とを連通させ、かつ、第１内部導電部材６０Ａの第２電気接続部６２を筒部４１の筒外でフレーム４０の外に突出させる第１切欠き４４Ａが設けられている（図５及び図６）。そして、ブロック３０には、第１電源側電気接続構造７０Ａの螺子保持部材７２が組み付けられる突出ブロック部３２として、その第１切欠き４４Ａから筒部４１の筒外に突出させ、かつ、第１副筒部４３Ａの筒内に収容させる第１突出ブロック部３２Ａが設けられている（図５、図６及び図８）。
　この電気接続箱１においては、雄螺子部材７１の雄螺子部を第１副筒部４３Ａの一方の開口４３ａから抜け出させた状態で、第１副筒部４３Ａの筒内に第１突出ブロック部３２Ａと第１電源側電気接続構造７０Ａと２つの第１内部導電部材６０Ａのそれぞれの第２電気接続部６２を収容させる（図６）。
　第２電源接続部２２Ｂは、第２電源側電線ＷＢ２の端末の電源側端子金具ＴＢと第２内部導電部材６０Ｂの第２電気接続部６２を物理的且つ電気的に接続させる。電気接続箱１は、電源側電気接続構造７０として、その第２電源側電線ＷＢ２の端末の電源側端子金具ＴＢと第２内部導電部材６０Ｂの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第２電源接続部２２Ｂとを相互間で物理的且つ電気的に接続させる第２電源側電気接続構造７０Ｂを備える（図２、図５及び図８）。この第２電源側電気接続構造７０Ｂは、第２電源側電線ＷＢ２の端末の電源側端子金具ＴＢと第２内部導電部材６０Ｂの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第２電源接続部２２Ｂのそれぞれの貫通孔ＴＢａ，６２ａ，２２ａに雄螺子部材７１の雄螺子部を挿通させ、その雄螺子部に雌螺子部材７３を螺合させることによって、その電源側端子金具ＴＢと第２内部導電部材６０Ｂの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第２電源接続部２２Ｂとを共締め固定する。
　ここで示すフレーム４０は、副筒部４３として、筒部４１における一方の開口４１ａと同じ向きに口を開けた開口（一方の開口４３ａ）が設けられた第２副筒部４３Ｂを有している（図１から図３、図５、図９及び図１２）。この第２副筒部４３Ｂは、第２電源側電気接続構造７０Ｂを筒内に収容し、かつ、この第２電源側電気接続構造７０Ｂにおける雄螺子部材７１の雄螺子部を一方の開口４３ａから突出させる。この第２副筒部４３Ｂは、フレーム４０の凹部４２の中に設けられている。筒部４１の筒壁４１ｃには、切欠き４４として、自身の筒内と第２副筒部４３Ｂの筒内とを連通させ、かつ、第２内部導電部材６０Ｂの第２電気接続部６２を筒部４１の筒外でフレーム４０の外に突出させる第２切欠き４４Ｂが設けられている（図５）。そして、ブロック３０には、第２電源側電気接続構造７０Ｂの螺子保持部材７２が組み付けられる突出ブロック部３２として、その第２切欠き４４Ｂから筒部４１の筒外に突出させ、かつ、第２副筒部４３Ｂの筒内に収容させる第２突出ブロック部３２Ｂが設けられている（図５及び図８）。
　この電気接続箱１においては、雄螺子部材７１の雄螺子部を第２副筒部４３Ｂの一方の開口４３ａから抜け出させた状態で、第２副筒部４３Ｂの筒内に第２突出ブロック部３２Ｂと第２電源側電気接続構造７０Ｂと第２内部導電部材６０Ｂの第２電気接続部６２を収容させる。
　この電気接続箱１においては、第１電源側電気接続構造７０Ａの雄螺子部材７１の雄螺子部を第１電源接続部２２Ａの貫通孔２２ａに差し込んで第１電源接続部２２Ａを第１電源側電気接続構造７０Ａに組み付け、かつ、第２電源側電気接続構造７０Ｂの雄螺子部材７１の雄螺子部を第２電源接続部２２Ｂの貫通孔２２ａに差し込んで第２電源接続部２２Ｂを第２電源側電気接続構造７０Ｂに組み付ける。そして、この電気接続箱１においては、第１電源側電気接続構造７０Ａの雄螺子部材７１の雄螺子部を第１電源側電線ＷＢ１の電源側端子金具ＴＢの貫通孔ＴＢａに差し込んでその電源側端子金具ＴＢを第１電源側電気接続構造７０Ａに組み付け、かつ、第２電源側電気接続構造７０Ｂの雄螺子部材７１の雄螺子部を第２電源側電線ＷＢ２の電源側端子金具ＴＢの貫通孔ＴＢａに差し込んでその電源側端子金具ＴＢを第２電源側電気接続構造７０Ｂに組み付ける。この電気接続箱１においては、それぞれの雄螺子部材７１の雄螺子部に雌螺子部材７３を各々螺合して、第１電源側電線ＷＢ１の電源側端子金具ＴＢと２つの第１内部導電部材６０Ａのそれぞれの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａとを共締め固定し、かつ、第２電源側電線ＷＢ２の電源側端子金具ＴＢと第２内部導電部材６０Ｂの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第２電源接続部２２Ｂとを共締め固定する。この電気接続箱１においては、２つの電源側端子金具ＴＢと回路分岐部品（回路保護部品）２０が第１電源側電気接続構造７０Ａと第２電源側電気接続構造７０Ｂを介してブロック３０に組み付けられる。
　第１副筒部４３Ａと第２副筒部４３Ｂにおけるそれぞれの一方の開口４３ａは、２つの電源側端子金具ＴＢ、２つの第１内部導電部材６０Ａと第２内部導電部材６０Ｂのそれぞれの第２電気接続部６２、回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａと第２電源接続部２２Ｂ、第１電源側電気接続構造７０Ａ及び第２電源側電気接続構造７０Ｂと一緒に第１カバー部材５１で覆われて、この第１カバー部材５１の中に収められる。
　第２カバー部材５２は、閉塞部５３として、第１副筒部４３Ａの他方の開口４３ｂをフレーム４０の外に露出させぬように塞ぐ第１閉塞部５３Ａと、第２副筒部４３Ｂの他方の開口４３ｂをフレーム４０の外に露出させぬように塞ぐ第２閉塞部５３Ｂと、を有する（図１、図３、図９及び図１３）。この第１閉塞部５３Ａと第２閉塞部５３Ｂは、他方の開口４３ｂを第１切欠き４４Ａや第２切欠き４４Ｂと一緒にフレーム４０の外から塞ぐ１枚の板状の壁部であってもよく、他方の開口４３ｂを第１切欠き４４Ａや第２切欠き４４Ｂと一緒にフレーム４０の外から囲って覆い隠す複数の壁部から成るものであってもよい。ここでは、第１副筒部４３Ａと第２副筒部４３Ｂが設けられた筒部４１の他方の開口４１ｂの周縁に、第１分割カバー５２Ａが組み付けられる。このため、第１閉塞部５３Ａと第２閉塞部５３Ｂは、第１分割カバー５２Ａに設けている。
　ここで、回路分岐部品（回路保護部品）２０は、第１電源接続部２２Ａを第１電源側電気接続構造７０Ａに組み付け且つ第２電源接続部２２Ｂを第２電源側電気接続構造７０Ｂに組み付けた状態で、全ての負荷接続部２３の露出面２３ｂを対向壁体４１ｆと向かい合わせに配置して、樹脂部材２６の保持部２６ａと対向壁体４１ｆとの間に露出面２３ｂを介在させる（図７）。このため、全ての負荷側電気接続構造７５は、負荷側電線ＷＬの端末の負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３とを保持部２６ａよりも対向壁体４１ｆ側で物理的且つ電気的に接続させる。よって、この電気接続箱１においては、第１カバー部材５１が取り外されているときに、その負荷側電気接続構造７５と負荷側端子金具ＴＬと回路分岐部材（回路保護部材）２１の負荷接続部２３に対する他部品の接触を抑止することができる。
　また、回路分岐部品（回路保護部品）２０は、第１電源接続部２２Ａを第１電源側電気接続構造７０Ａに組み付け且つ第２電源接続部２２Ｂを第２電源側電気接続構造７０Ｂに組み付けた状態で、樹脂部材２６から露出させた第１電源接続部２２Ａと第２電源接続部２２Ｂを当該樹脂部材２６よりも対向壁体４１ｆ側に配置する（図６）。このため、第１電源側電気接続構造７０Ａは、第１電源側電線ＷＢ１の端末の電源側端子金具ＴＢと２つの第１内部導電部材６０Ａのそれぞれの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａとを樹脂部材２６よりも対向壁体４１ｆ側で物理的且つ電気的に接続させる。更に、第２電源側電気接続構造７０Ｂは、第２電源側電線ＷＢ２の端末の電源側端子金具ＴＢと第２内部導電部材６０Ａの第２電気接続部６２と回路分岐部材（回路保護部材）２１の第２電源接続部２２Ｂとを樹脂部材２６よりも対向壁体４１ｆ側で物理的且つ電気的に接続させる。よって、この電気接続箱１においては、第１カバー部材５１が取り外されているときに、第１電源側電気接続構造７０Ａ、第２電源側電気接続構造７０Ｂ、第１電源側電線ＷＢ１の端末の電源側端子金具ＴＢ、第２電源側電線ＷＢ２の端末の電源側端子金具ＴＢ、２つの第１内部導電部材６０Ａのそれぞれの第２電気接続部６２、第２内部導電部材６０Ａの第２電気接続部６２並びに回路分岐部材（回路保護部材）２１の第１電源接続部２２Ａ及び第２電源接続部２２Ｂに対する側方からの他部品の接触を抑止することができる。
　以上示したように、本実施形態の電気接続箱１は、回路分岐部品（回路保護部品）２０を筒部４１の筒外でフレーム４０の外に配置しているので、この回路分岐部品（回路保護部品）２０に接続された電源側電線ＷＢ（第１電源側電線ＷＢ１、第２電源側電線ＷＢ２）や負荷側電線ＷＬによる筐体内での周辺への過荷重を抑止することができる。特に、この電気接続箱１は、電線径が太くなるほど電源側電線ＷＢ（第１電源側電線ＷＢ１、第２電源側電線ＷＢ２）や負荷側電線ＷＬが曲がり難いので、この電源側電線ＷＢ等による筐体内での周辺への過荷重を抑止することができる。例えば、この電気接続箱１においては、電源側電線ＷＢ等による筐体内での第２カバー部材５２への過荷重を抑止することで、この第２カバー部材５２の変形を抑えることができる。また、この電気接続箱１は、曲げ難い電源側電線ＷＢ等をフレーム４０の外で配策することによって、筒部４１の筒内での他の電線の収容性を向上させることができる。また、この電気接続箱１は、電源側電線ＷＢ等をフレーム４０の外で配策することによって、この電源側電線ＷＢ等で発生した熱が筐体内で籠もることがなくなるので、筐体内の温度上昇を抑えることができる。そして、この電気接続箱１は、これらの効果を奏しつつ、回路分岐部品（回路保護部品）２０における物理的且つ電気的な接続箇所（第１電源側電気接続構造７０Ａや第２電源側電気接続構造７０Ｂ等）が樹脂部材２６よりも筐体側に配置されているので、その接続箇所に対する他部品の接触を抑止することができる。
　１　電気接続箱
　１０　電子部品
　２０　回路分岐部品（回路保護部品）
　２１　回路分岐部材（回路保護部材）
　２２　電源接続部
　２２Ａ　第１電源接続部
　２２Ｂ　第２電源接続部
　２３　負荷接続部
　２３ｂ　露出面
　２４　可溶部
　２６　樹脂部材
　２６ａ　保持部
　４０　フレーム
　４１　筒部
　４１ａ　一方の開口（開口）
　４１ｃ　筒壁
　４１ｆ　対向壁体
　５１　第１カバー部材（カバー部材）
　６０　内部導電部材
　６０Ａ　第１内部導電部材
　６０Ｂ　第２内部導電部材
　６１　第１電気接続部
　６２　第２電気接続部
　７０　電源側電気接続構造
　７０Ａ　第１電源側電気接続構造
　７０Ｂ　第２電源側電気接続構造
　７５　負荷側電気接続構造
　Ｂ　外部電源
　Ｌ　外部負荷
　ＴＢ　電源側端子金具
　ＴＬ　負荷側端子金具
　ＷＢ　電源側電線
　ＷＢ１　第１電源側電線
　ＷＢ２　第２電源側電線
　ＷＬ　負荷側電線

Claims (4)

  1. 　電子部品と、
    　前記電子部品を外部電源に電気接続させる内部導電部材と、
    　少なくとも一端に開口が設けられた筒壁から成り、その筒内に前記電子部品及び前記内部導電部材を収容し且つ保持する筒部を有するフレームと、
    　前記筒部の前記開口を塞ぐカバー部材と、
    　前記筒部の筒外で前記フレームの外に配置され、樹脂部材に内在させた導電性の回路分岐部材を前記外部電源と外部負荷との間に介在させる回路分岐部品と、
    　を備え、
    　前記内部導電部材は、前記筒部の筒内で前記電子部品に対して物理的且つ電気的に接続させる第１電気接続部と、第２電気接続部と、を有し、
    　前記回路分岐部材は、前記樹脂部材の外に露出させ且つ前記筒部の筒外で前記フレームの外に配置され、前記外部電源に電気接続された電源側電線の端末の電源側端子金具と前記内部導電部材の前記第２電気接続部を物理的且つ電気的に接続させる電源接続部と、前記樹脂部材の外に露出させ且つ前記筒部の筒外で前記フレームの外に配置され、前記外部負荷に電気接続された負荷側電線の端末の負荷側端子金具を物理的且つ電気的に接続させる負荷接続部と、を有し、
    　前記筒部の前記筒壁は、筒外で前記回路分岐部品に対向配置させる対向壁体を有し、
    　前記樹脂部材は、前記負荷接続部の露出面を露出させた状態で当該負荷接続部を保持する保持部を有し、
    　前記回路分岐部品は、前記負荷接続部の前記露出面を前記対向壁体と向かい合わせに配置して、前記保持部と前記対向壁体との間に前記露出面を介在させる電気接続箱。
  2. 　前記筒部の筒外で前記フレームの外には、前記負荷側電線の端末の前記負荷側端子金具と前記回路分岐部材の前記負荷接続部とを前記保持部よりも前記対向壁体側で物理的且つ電気的に接続させる負荷側電気接続構造を設ける請求項１に記載の電気接続箱。
  3. 　前記樹脂部材から露出させた前記電源接続部は、前記樹脂部材よりも前記対向壁体側に配置する請求項１又は２に記載の電気接続箱。
  4. 　前記筒部の筒外で前記フレームの外には、前記電源側電線の端末の前記電源側端子金具と前記内部導電部材の前記第２電気接続部と前記回路分岐部材の前記電源接続部とを前記樹脂部材よりも前記対向壁体側で物理的且つ電気的に接続させる電源側電気接続構造を設ける請求項３に記載の電気接続箱。
PCT/JP2023/037618 2022-11-24 2023-10-18 電気接続箱 WO2024111295A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-187141 2022-11-24
JP2022187141A JP2024075893A (ja) 2022-11-24 2022-11-24 電気接続箱

Publications (1)

Publication Number Publication Date
WO2024111295A1 true WO2024111295A1 (ja) 2024-05-30

Family

ID=91195451

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/037618 WO2024111295A1 (ja) 2022-11-24 2023-10-18 電気接続箱

Country Status (2)

Country Link
JP (1) JP2024075893A (ja)
WO (1) WO2024111295A1 (ja)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017028767A (ja) * 2015-07-16 2017-02-02 矢崎総業株式会社 電気接続箱及びワイヤハーネス
JP2019068635A (ja) * 2017-10-02 2019-04-25 矢崎総業株式会社 スライドカバーの防水構造、電気接続箱及びワイヤハーネス
JP2021090296A (ja) * 2019-12-05 2021-06-10 矢崎総業株式会社 電気接続箱及びワイヤハーネス
JP2021090295A (ja) * 2019-12-05 2021-06-10 矢崎総業株式会社 電気接続箱及びワイヤハーネス

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017028767A (ja) * 2015-07-16 2017-02-02 矢崎総業株式会社 電気接続箱及びワイヤハーネス
JP2019068635A (ja) * 2017-10-02 2019-04-25 矢崎総業株式会社 スライドカバーの防水構造、電気接続箱及びワイヤハーネス
JP2021090296A (ja) * 2019-12-05 2021-06-10 矢崎総業株式会社 電気接続箱及びワイヤハーネス
JP2021090295A (ja) * 2019-12-05 2021-06-10 矢崎総業株式会社 電気接続箱及びワイヤハーネス

Also Published As

Publication number Publication date
JP2024075893A (ja) 2024-06-05

Similar Documents

Publication Publication Date Title
JP2005190735A (ja) ヒュージブルリンクユニット
JP5836811B2 (ja) ねじ締めブロックの接続構造
US8366492B2 (en) Terminal reversing block
WO2024111295A1 (ja) 電気接続箱
US7321286B2 (en) Electrical junction box
US6811412B2 (en) Separable structured electric connection box
US20150155125A1 (en) Fuse unit
WO2024111294A1 (ja) 電気接続箱
WO2024111292A1 (ja) 電気接続箱
US20190103738A1 (en) Electrical connection box
WO2024111297A1 (ja) 電気接続箱
WO2024111296A1 (ja) 回路保護部品及び電気接続箱
WO2024111298A1 (ja) 電気接続箱
WO2024111291A1 (ja) 電気接続箱
WO2024111293A1 (ja) 電気接続箱
KR20100084891A (ko) 퓨즈박스
JP4851492B2 (ja) プラグインボックス
US11081814B2 (en) Wiring module
JP7239392B2 (ja) 電気接続箱、及び、ワイヤハーネス
KR102338383B1 (ko) 정션블록용 대전류 단자 프로텍터
JP7282592B2 (ja) 電気接続箱、及び、ワイヤハーネス
JP7410093B2 (ja) 電気接続箱
JP7495255B2 (ja) 電気接続箱
JP2018093605A (ja) 電気接続箱、及び、ワイヤハーネス
JP4177247B2 (ja) バスバーのヒューズ接続構造とそれを備える電気接続箱