JP3770027B2 - Wire harness connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure for wire harnesses arranged in an automobile, and in particular, to improve connection workability of a large number of wire harnesses connected to a junction box and connection workability between wire harnesses.
[0002]
[Prior art]
As shown in FIGS. 19 and 20, a junction box 1 is arranged on the so-called dash side on both sides of the front side of the vehicle interior (the right foot side of the driver's seat and the left foot side of the passenger seat in a right-hand drive vehicle), A number of wire harnesses W / H are connected to the junction box 1 and are in a very crowded state.
[0003]
In the assembly procedure, an operator holds the junction box 1 with one hand, and the connectors 2 of many wire harnesses W / H are fitted and connected to the connector housing chamber 1a of the junction box 1 with the other hand. After the connection of the wire harness connector to the junction box 1 is completed, the junction box 1 is fastened and fixed to the vehicle body 3 (dash panel) with bolts 4 or is fixed using a crankpin or the like. After the junction box 1 is attached to the vehicle body 3, it is attached to the vehicle body 3 so as to cover the interior material 5 (trim), and the assembly work of the junction box connected to the wire harness to the vehicle body is completed.
[0004]
[Problems to be solved by the invention]
A number of wire harnesses W / H such as a front harness (engine room harness), a door harness, a floor harness, a roof harness, an instrument panel harness, and a cowl harness are connected to the junction box 1 from multiple directions. Since a large number of connectors 2 connected to the terminal are fitted and connected to the connector housing portion 1a of the junction box, the size is greatly increased. Since the operation of attaching the junction box 1 to which the many wire harnesses are complicatedly connected to the vehicle body 3 is on the dash side as described above, it is not possible for the worker to look into the vehicle interior from the outside (Z) of the vehicle with the middle waist. It must be performed in a stable posture, and is the most difficult task in assembling a wire harness to an automobile.
[0005]
Furthermore, in the connector connection of the wire harness W / H to the junction box 1, as described above, the worker has the junction box 1 with one hand and the connector with the other hand, so that the two-hand operation is performed. Since the worker works using the fingertip, the burden on the worker is very large and there is a problem in terms of reliability of electrical connection by the connector.
[0006]
The present invention has been made in view of the above problems, and it is an object of the present invention to facilitate the connection work between a large number of wire harnesses and a junction box and the vehicle body mounting work of the junction box and to improve the connection reliability.
[0007]
[Means for Solving the Problems]
  In order to solve the above problems, the present invention provides a circuit body built-in case as a connector to be attached to the end of the wire group of the wire harness, and the circuit body built-in case includes a circuit body made of a bus bar, an electric wire, or an FPC in the case body. Built into the case body, the wire ends are connected to the ends of these circuit bodies, and tabs or female terminal portions are provided on the circuit bodies to protrude into the recesses provided on the case body, While providing mounting through holes for bolt penetration,
  In addition to providing a mounting through hole in the electrical junction box connected to the wire harness, a bolt protrudes from the vehicle body,
  A plurality of circuit body built-in cases connected to the plurality of wire harnesses having different destinations are sequentially arranged in contact with each other through bolts, and the tab and the female terminal portion or the tabs are connected via a relay terminal, and These built-in circuit body casesOn the inside of the car body side or outsideA plurality of wire harnesses in which a plurality of wire harnesses are provided by arranging the electric connection box, passing the bolts in parallel, connecting the circuit body of the circuit body built-in case and the circuit body in the electric connection box, and fastening nuts to the bolts. The connection structure of the wire harness which is connected to the electrical junction box through the circuit body built-in case is provided.
[0008]
The electrical junction box is composed of a junction box, and the circuit body built-in case is connected to a plurality of or all of the front harness, floor harness, cowl harness, instrument panel harness, roof harness, and door harness.
[0009]
As described above, if a bolt is protruded from the vehicle body, and the through-hole for mounting the circuit body built-in case and the electrical connection box is sequentially passed through the bolt and fastened with a nut, the worker can perform one-hand operation. The circuit body built-in case connected to each wire harness can be assembled to the bolt, and a junction box can be assembled to improve workability. Note that the bolts that pass through the four corners of the circuit body built-in case and the junction box may be projected from the vehicle body side, and bolts may be tightened with nuts through bolts provided in the center of these cases. Further, the junction box may be passed through the bolt first, or after all the circuit body built-in case is passed through the bolt, the junction box may be passed through the bolt and fastened with a nut.
[0010]
Note that this is not limited to connecting a case with a built-in circuit body connected to a number of wire harnesses to a junction box, and a case with a built-in circuit body connected to a wire harness is assembled in a similar manner to other electrical connection boxes other than the junction box. It goes without saying that you can find it.
[0011]
  Also, not only when the electrical junction box and the case with built-in circuit body are assembled to the bolt projecting from the vehicle body, but the nut is passed through the bolt through the through-hole for mounting provided in the case with built-in circuit body and the electrical junction box connected to the wire harness. When connecting only the electrical junction box and the wire harness,Also suitableCan be used.
[0012]
  In this case,A circuit body built-in case is provided as a connector to be attached to the terminal of the wire group of the ear harness, and the circuit body built-in case incorporates a circuit body made of a bus bar, an electric wire or an FPC in the case main body. The circuit body is provided with a tab or a female terminal portion and protruded into a recess provided in the case body, and the case body is provided with a mounting through hole for bolt penetration. While
  A mounting through hole is also provided in the electrical junction box connected to the wire harness,
  Circuit body built-in cases connected to a plurality of wire harnesses are arranged in parallel by abutting them through bolts, and the above tabs and female terminals or tabs are connected via relay terminals, and these circuits are arranged in parallel Built-in caseOn the inside of the car body side or outsideArranging the electrical connection box and passing it through a bolt, connecting the circuit body of the case with the built-in circuit body and the circuit body in the electrical connection box, and fastening a nut to the bolt to attach a plurality of wire harnesses Connected to the electrical junction box via the case with built-in circuit bodyThe
[0013]
  Also applicable when connecting wire harnessesCanIt is not always necessary to connect the circuit case with the electrical junction box.
  in this case,A circuit body built-in case is provided as a connector to be attached to the terminal of the wire group of the wire harness, and the circuit body built-in case incorporates a circuit body made of a bus bar, an electric wire or an FPC in the case main body, and the above-mentioned wire terminal is attached to the terminal of these circuit bodies. As well as being connected, the circuit body is provided with a tab or female terminal part and protrudes into the recess provided in the case body,
  The circuit body built-in case connected to a plurality of wire harnesses is abutted and joined to connect the tab and the female terminal portion or the tabs via a relay terminal.The
[0014]
  the aboveOf the present inventionThe case with a built-in circuit body is made of a rectangular flat plate or L-shaped flat plate with the circuit body being insert-molded therein, and sequentially contacts in parallel, and has a concave portion provided with the tab or female terminal portion on the corresponding contact surface. It is preferable to correspond in the contact state.
  Note that the circuit body is not limited to insert molding, and the case body may be composed of a lower case and an upper case, and after the circuit body is assembled to the lower case, the upper case may be covered and coupled.
[0015]
It is preferable that the circuit body built in the circuit body built-in case is grounded by being brought into contact with the penetrating bolt. When an electrical connection box such as a junction box is connected to the case with a built-in circuit body with bolts, it is preferable that the internal circuit of the electrical connection box is also brought into contact with the bolt and grounded. Specifically, a bus bar is used as a circuit body, a through hole of the bus bar is provided at a position of a mounting through hole through which the bolt is passed, and an inner peripheral surface of the through hole is brought into contact with the bolt. When an electric wire is used as the circuit body, a round terminal may be connected to the electric wire and the round terminal may be brought into contact with a bolt.
[0016]
As the circuit body built in the above-mentioned circuit body built-in case, a bus bar obtained by punching a conductive metal plate corresponding to the circuit shape and a strip-shaped bus bar are arranged in the X and Y directions and welded at a required intersection. A wire, a crossed wire of the covered electric wires in the X and Y directions, and core wires connected by welding or a pressure contact terminal at a required intersection, or FPC or the like is used.
[0017]
The circuit body in the case with a built-in circuit body is provided with a tab at the tip, the tab is projected in a parallel state on the side surface of the case body, and is connected via the terminal and terminal of the wire group of the wire harness or by welding. Yes. In addition, when connecting with a terminal, it is preferable to connect a circuit body and an electric wire by accommodating the terminal provided in the terminal of the electric wire group of a wire harness in a connector, and fitting this connector with a case.
[0018]
When one circuit body in a circuit body built-in case is skipped through one adjacent circuit body built-in case, or multiple circuit bodies are connected to a circuit body in another circuit body built-in case, and the circuit body is in an electrical junction box When the circuit body built-in case that is interposed between the circuit body and the circuit body is connected through, a circuit body that is not connected to the wire harness wire is built into the case with the circuit body built-in, and the tab and female terminal are connected. By connecting sequentially, it connects with the circuit body in a required circuit body built-in case or an electrical junction box. Alternatively, a through hole is provided in a case with a built-in circuit body, and through a tab that is elongated in the through hole, a through hole is connected to a female terminal provided in a required case with a built-in circuit body or an electrical connection box. Note that the connection of the circuit body is not performed by directly fitting and connecting the tab and the female terminal part, but the circuit body may be provided with only the tab and connected via a relay terminal provided with a pair of female terminal parts. Good.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2 show a schematic assembly method according to the first embodiment of the present invention. In the present invention, the connector for connecting each wire harness to the junction box is a flat circuit body built-in case 10, and the circuit body built-in case 10 connected to each wire harness (the circuit body built-in case connected to the front harness) 10A, a circuit body built-in case 10B connected to the floor harness, a circuit body built-in case 10C connected to the roof harness, a circuit body built-in case 10D connected to the cowl harness, a circuit body built-in case 10E connected to the instrument panel harness, A circuit body built-in case 10F) connected to the door harness is provided.
[0020]
A plurality of circuit body built-in cases 10 (10A to 10F) are provided with mounting through-holes 11, and are sequentially welded from the vehicle body (dash panel) 3 and sequentially passed through bolts 12 and stacked in parallel. Finally, the junction box 15 provided with the mounting through-holes 14 is passed through the stat bolt 12, and a number of circuit body built-in cases 10 are sandwiched between the junction box 15 and the vehicle body 3. The nut 13 is tightened to fix the circuit body built-in case 10 and the junction box 15 to the vehicle body 3, and finally the trim 5 is attached to the vehicle body 3.
[0021]
The circuit body built-in case 10 connected to each of the wire harnesses incorporates a bus bar as a circuit body, and the bus bars in the circuit body built-in case and the bus bars in the circuit body built-in case are connected to the bus bar in the junction box 15. Thus, electrical connection is achieved. The circuit body of the circuit body built-in case 10 is not limited to the bus bar, but may be a covered electric wire, an FPC (flexible printed circuit), or the like.
[0022]
The circuit body built-in case 10 corresponding to a connector connected to a conventional wire harness terminal has a structure shown in FIGS.
A case body 21 having a rectangular flat plate formed by insert-molding a bus bar 20 formed by punching a conductive metal plate corresponding to the circuit shape is provided. One side of the case body 21 is provided with recesses 21a for connecting terminals in parallel, and tabs 20a formed on the bus bars 20 built in the respective recesses 21a are respectively protruded to end terminals of the respective wires w of the wire harness W / H. The core wire w-a exposed to 1 is connected by ultrasonic welding or resistance welding. After the connection, the cover 23 is put on and the lock claw 21b of the case body 21 is locked to the lock hole 23a of the cover 23 to be locked.
[0023]
In addition, as shown in FIG. 4, the female terminal 24 may be connected to the terminal of the electric wire w of the wire harness, and the female terminal may be fitted and connected to the tab 20a. In this case, the connector accommodated in the terminal accommodating chamber in which the female terminal 24 is arranged in parallel is provided, and the connector is fitted to the tab juxtaposed portion of the case body so that the female terminal 24 and the tab 20a are fitted. It is preferable.
[0024]
Further, in the circuit body built-in case 10 of FIG. 3, the concave portion 21a is provided side by side on one side of the case body 21 to expose the tab 20a, but the concave portion 21a is provided on the other side to expose the tab 20a. The electric wire group of a wire harness may be connected from 2 directions-4 directions.
Further, the case body 21 may be constituted by a lower case provided with a groove for press-fitting the bus bar and an upper case that covers the bus bar after press-fitting, instead of providing the bus bar by insert molding.
[0025]
The bus bar 20 built in the case main body 21 has a plurality of tabs 20a formed on one bus bar 20, and wires that need to be connected to each other are connected inside the case. The bus bar 20 and the case main body 21 are configured as shown in FIGS. 5 to 7 in order to connect to the wires in the other wire harnesses and the circuit in the junction box.
[0026]
That is, when it is necessary to connect the circuits of the circuit body built-in cases 10A and 10B adjacent to each other, as shown in FIG. 5, the tabs are connected to the bus bar 20-1 in one circuit body built-in case 10A. 20b is refracted and protrudes into the recess 21b provided in the case body 21. The bus bar 20-2 in the other circuit body built-in case 10B is provided with a bent female terminal 20c fitted to the tab 20b, and a frame portion 21c surrounding the female terminal 20c is provided. When the circuit body built-in cases 10A and 10B are stacked in parallel, the frame portion 21c is fitted into the concave portion 21b, and the female terminal 20c is fitted and connected to the tab 20b.
[0027]
In addition, when connecting to a circuit of another circuit body built-in case that passes through the adjacent circuit body built-in case and jumps one or two, it is juxtaposed with the junction box 15. When all the circuit body built-in cases are to be connected to the circuit in the junction box 15, the through-circuit case is provided with a bus bar that is not connected to the electric wires and other bus bars, and the bus bar has tabs and female terminals. The female terminal and the tab of the adjacent circuit body built-in case are sequentially fitted and connected to connect to a required circuit.
[0028]
As shown in FIG. 6, the tab 20b ′ refracted on the bus bar 20 is elongated, and a hole 21c through which the tab 20b ′ passes is provided in the case main body 21 of the circuit body built-in case 10 that passes therethrough. 21c may be sequentially connected to a required circuit body built-in case or junction box 15 circuit.
[0029]
Furthermore, as shown in FIG. 7, the circuit connection between the circuit body built-in cases 10 is a relay having a pair of female terminal portions 25 a and 25 b provided with tabs 20 b and 20 b respectively on the circuits 20-1 and 20-2 to be connected. You may connect using the terminal 25. FIG.
[0030]
As shown in FIG. 8, the case body 21 of the circuit body built-in case 10 (10A to 10F) and the case 16 of the junction box 15 connected to each wire harness described above have the mounting through holes 11a described above at the four corners. 14a is provided, and mounting through holes 11b and 14b are also provided in the center. Further, as shown in FIG. 9, the ground connection holes 20e of the built-in bus bar 20 are arranged at positions corresponding to the through holes 11a and 11b, and the bolts 12 passing through the through holes 11a and 11b are connected to the ground connection holes 20e. The connection piece 20f formed on the inner peripheral surface is in contact with the bus bar 20 in the circuit body built-in case 10 for ground connection. Similarly, a ground connection hole may be provided at a position corresponding to the through holes 14a and 14b in a bus bar (not shown) in the junction box 15 so as to achieve ground connection.
[0031]
As described above, the circuit body built-in case 10 (10A to 10F) connected to each wire harness is provided, while the five bolts 12 are protruded from the vehicle body 3. When assembled to the vehicle body 3, the circuit body built-in cases 10A to 10F are passed through the mounting through holes 11a and 11b through the bolts 12 as shown in FIGS. Laminate. At this time, it is preferable that the connection direction of the wire group of the wire harness and the circuit body built-in case 10 is different depending on the wiring direction of the wire harness and does not overlap with the adjacent wire harness.
[0032]
Thus, since it is only necessary to pass the case 10 with a built-in circuit body sequentially through the bolts 12, the worker can perform the operation with one hand. In addition, since the circuit body built-in case 10 is sequentially laminated through the bolts 12, the positioning is automatically performed, and the position between the tab and the female terminal that are mutually fitted between the circuit body built-in cases 10 is determined. The required circuit connection is automatically made by sequentially stacking without any deviation.
[0033]
After the circuit body built-in cases 10 </ b> A to 10 </ b> F connected to a large number of wire harnesses are stacked through the bolts 12 as described above, the junction box 15 is also passed through the bolts 12 and fastened and fixed by the nuts 13. In this state, a required circuit is connected between the circuit body built-in cases 10A to 10F, the wires of the wire harness are connected without going through the junction box branch circuit, and the circuits of the circuit body built-in cases 10A to 10F are The circuit of the junction box 15 is also connected.
Note that the central bolt may not be protruded from the vehicle body, and may be fastened and fixed with a nut through the bolt in the center after passing through the other four corners and setting the circuit body built-in case 10 and the junction box 15.
[0034]
The present invention is not limited to the above-described embodiment, and as shown in the second embodiment of FIG. 10, a single rectangular flat plate is divided into a plurality of divisions without using all of the circuit body built-in case connected to the wire harness as a rectangular flat plate. The circuit body built-in cases 10 ′ and 10 ″ may be configured.
[0035]
In the second embodiment, the circuit body built-in case 10 ′ connected to the door harness is a small rectangular flat plate, while the circuit body built-in case 10 ″ connected to the instrument panel harness is an L-shaped flat plate, and the circuit body built-in case 10 ′. And 10 ″ are combined to form a large rectangular flat plate having the same shape as the other circuit body built-in case 10.
[0036]
In the circuit connection between the circuit body built-in cases 10 ′ and 10 ″, as shown in FIG. 11, the tab 20b of the bus bar 20 protrudes from the lower end surface or the left end surface on the circuit body built-in case 10 ′ side. On the other hand, the circuit body built-in case 10 ″ is provided with a concave portion on the corresponding end surface, and the female terminal portion 20c of the bus bar 20 is protruded to be connected. In addition, the mounting through holes 11 are provided at the corners of the circuit body built-in case 10 ′, and the mounting through holes 11 are also provided at the corners of the circuit body built-in case 10 ″. be able to.
[0037]
In this way, when the number of wires in the wiring harness to be connected is small and the number of built-in bus bars is small, a small circuit body built-in case is provided and combined with another circuit body built-in case, the vehicle body 3 and the junction The number of circuit body built-in cases stacked between the box 15 can be reduced, and the required space can be reduced.
[0038]
FIG. 12 shows the third embodiment, and the circuit body built-in cases 10A to 10F connected to the respective wire harnesses are all L-shaped, and the L-shaped can be sequentially reduced in size from the outside to the inside arranged on the opposite side to the vehicle body 3 and stacked. Like that. Further, in the third embodiment, contrary to the first embodiment, the junction box 15 is arranged on the vehicle body 3 side, the circuit body built-in cases 10A to 10F are arranged on the outside (trim 5 side), and The shape of the box 15 is also a shape that just fits with the end faces of the built-in circuit body built-in cases 10A to 10F on the vehicle body side, and the end faces 40A to 40F of the circuit body built-in cases 10A to 10F are in contact with the junction box 15.
[0039]
As shown in FIG. 13, L-shaped bus bars 20 are built in the L-shaped circuit body built-in cases 10A to 10F, and the bus bars 20 are tabs 20b ′ of the bus bars 20 ′ at the positions of the end faces 40A to 40F. Is positioned so that the female terminal of the bus bar in the junction box 15 can be directly fitted and connected without passing through another case with a built-in circuit body.
[0040]
In the third embodiment, the bolt 12 protruding from the vehicle body 3 is first supported through the junction box 15, and then the inner circuit body built-in case 10 </ b> F is supported through the bolt 12, and sequentially 10E → 10D → 10C → 10B → 10A and the first embodiment are supported by passing through the bolts 12 in the reverse order and fastened and fixed with nuts.
[0041]
In the third embodiment, the bus bars of all the circuit body built-in cases 10A to 10F can be directly connected to the bus bar of the junction box 15, and the size of the circuit body built-in case according to the number of bus bars built in the circuit body built-in case, etc. Therefore, the overall size can be reduced.
[0042]
  FIG.referenceEmbodiment is shown and the circuit body built-in cases 10 connected to a wire harness are connected, it is not connected to the junction box, but is applied only to the connection of wire harnesses. The structure of the circuit body built-in case 10 is the same as that of the above-described embodiment. The circuit body built-in cases 10 connected to each other are provided with mounting through holes 11 and tightened with nuts 13 ′ through bolts 12 ′ to be integrally fixed. ing. It should be noted that, instead of integration with bolts and nuts, adjacent circuit body built-in cases 10 may be fixed by providing lock claws and lock holes.
[0043]
  FIG.4In the embodiment, a plurality of wire harnesses are connected to an electrical connection box 80 such as a fuse box or a relay box other than the junction box. A circuit body built-in case 10 connected to a plurality of wire harnesses is connected to the electric connection box 80, mounting through holes 81 and 11 are provided in the electric connection box 80 and the circuit body built-in case 10, and a nut is passed through a bolt 82. Fastened at 83 and assembled together. These integrally assembled parts may be provided by protruding a bracket 80b provided with a bolt hole 80a in the electric connection box 80, and fixing the electric connection box by bolting to a fixed body such as a vehicle body, What is necessary is just to fix to a to-be-fixed body with another suitable fixing means.
[0044]
16 to 18 show modifications of the circuit body built in the circuit body built-in case 10. 16A and 16B, strip-shaped bus bars 51 and 52 are provided in a cross shape in the X and Y directions via an insulating plate 53, and a tab provided at one end of the bus bar 51 in the X direction is connected to the electric wire w. , The Y-direction bus bar 52 is welded through an opening 53a provided in the insulating plate 53 at the intersection of the required position. These bus bars 51 and 52 are provided with tabs 51b and 52b at their ends, and are connected to the tabs of other circuit body built-in cases via relay terminals.
[0045]
FIG. 17 uses covered electric wires 60 and 61 as circuit bodies, and the covered electric wires 60 and 61 are cross-wired in the X and Y directions like the strip-shaped bus bar, and as shown in FIG. A male terminal 63 is connected to the tip of the electric wire 60 and is fitted and connected to a female terminal connected to the electric wire terminal of the wire harness. The electric wires 60 and 61 are connected by press contact terminals 64 having press contact slots 64a and 64b as shown in FIG. In addition, as shown to (D), you may carry out the intermediate | middle peeling of the electric wire of an intersection position, and weld-connect core wires wa. Moreover, the connection with the other circuit body built-in case 10 and the junction box 15 has connected the male terminal 65 to the terminal of the electric wires 60 and 61, and has connected it via the relay terminal.
[0046]
FIG. 18 uses an FPC 70 in which a copper foil is sandwiched between insulating films as a circuit body. The FPC 70 and the wire w of the wire harness are connected by welding the core wire wa of the wire w to the copper foil 71. Further, the connection between the circuit body built-in cases and the connection to the circuit body of the junction box are performed by welding an L-shaped tab 72 to the copper foil 71 and via the relay terminal.
[0047]
Also in the case of the circuit body shown in FIGS. 16 to 18, the case body may be formed by insert molding as in the first embodiment, or the upper case may be attached after the circuit body is assembled in the lower case. .
[0048]
【The invention's effect】
As is clear from the above description, according to the wire harness connection structure of the present invention, when a large number of wire harnesses are connected to an electrical connection box such as a junction box and attached to the vehicle body in this state, the wire harness protrudes from the vehicle body. The circuit body built-in case connected to the wire harness and the electrical junction box are passed through the bolt in order, and it is only necessary to fasten and fix with the nut. Therefore, the worker installs the circuit body built-in case sequentially with one hand. In addition, since the electrical junction box is simply passed through the bolt, complicated work can be easily performed, and the burden on the worker can be greatly reduced.
[0049]
In particular, when installing a junction box connected to a number of wire harnesses on the dash side of an automobile, the worker can work from the outside of the vehicle body while staying in the middle. If the connection and the assembly work to the vehicle body are made possible, the most difficult work in the assembly work of the wire harness can be facilitated, and the workability can be improved.
[0050]
Also, not only when attaching to the vehicle body, but also when connecting the wire harness to the electrical junction box, it can also be applied when connecting the wire harnesses together, in which case the circuit body built-in case connected to the wire harness is brought into contact. The circuit body built-in case and the electric junction box are abutted and coupled, and the circuit bodies in the circuit body built-in case and the circuit bodies in the electric junction box are directly fitted to the tab and the female terminal, or Connected via a relay terminal.
[0051]
In this way, when a circuit body built-in case is provided instead of a connector and connected to a place where a conventional connector is connected, a branch connection circuit can be provided by a circuit body inside the circuit body built-in case. Connection is possible, and the number of wires can be reduced. In addition, when a connector is used, a large number of connectors are connected to one wire harness to increase the connector fitting work. However, as in the present invention, a case with a built-in circuit body is provided at the end of one wire harness. When attached, the mating operation can be performed in a lump and workability can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an assembling mode of a first embodiment of the present invention.
FIG. 2 is a perspective view of FIG.
FIG. 3 is an exploded perspective view of a case with a built-in circuit body connected to a wire harness.
FIG. 4 is a view showing a modified example of a connection mode between a circuit body built in a circuit body built-in case and an electric wire.
FIG. 5 is a diagram showing a connection form between circuit bodies in a circuit body built-in case.
6 is a cross-sectional view showing a modification of FIG.
7A is a cross-sectional view showing another modification of FIG. 5, and FIG. 7B is a perspective view of a relay terminal to be used.
FIG. 8 is a perspective view showing a relationship between a bolt projecting from a vehicle body and a circuit body built-in case that passes through the bolt.
9A and 9B are diagrams showing a ground connection configuration using bolts.
FIG. 10 is a perspective view showing a second embodiment.
FIG. 11 is a schematic diagram of a main part of FIG.
FIG. 12 is a perspective view showing a third embodiment.
13 is a cross-sectional perspective view of a main part of FIG.
FIG. 14referenceIt is the schematic of embodiment.
FIG. 154It is the schematic of embodiment.
FIGS. 16A and 16B are diagrams showing a modification of the circuit body built in the circuit body built-in case. FIGS.
FIGS. 17A to 17D are views showing other modified examples of the circuit body incorporated in the circuit body built-in case. FIGS.
FIGS. 18A and 18B are diagrams showing another modification of the circuit body built in the circuit body built-in case. FIGS.
FIG. 19 is a front view showing a conventional example.
20 is a perspective view showing the assembly mode of FIG. 19. FIG.
[Explanation of symbols]
3 body
5 trim
10 (10A to 10F) Circuit body built-in case
11,14 Through hole for mounting
12 volts
13 Nut
15 junction box
20 Busbar
20a, 20b tab
20c female terminal
21 Case body
23 Cover
25 Relay terminal

Claims (6)

A circuit body built-in case is provided as a connector to be attached to the end of the wire group of the wire harness, and the circuit body built-in case incorporates a circuit body made of a bus bar, an electric wire or an FPC in the case body. The circuit body is provided with a tab or a female terminal portion and protruded into a recess provided in the case body, and the case body is provided with a mounting through hole for bolt penetration. While
In addition to providing a mounting through hole in the electrical junction box connected to the wire harness, a bolt protrudes from the vehicle body,
A plurality of circuit body built-in cases connected to the plurality of wire harnesses having different destinations are sequentially arranged in contact with each other through bolts, and the tab and the female terminal portion or the tabs are connected via a relay terminal, and The electric connection box is arranged on the inner side of the vehicle body side or the outer side of the circuit body built-in cases arranged side by side, and is arranged in parallel through the bolts. A wire harness connection structure in which a plurality of wire harnesses are connected to an electrical connection box through a case with a built-in circuit body by connecting a nut to the bolt and connecting a plurality of wire harnesses.   2. The electrical connection box comprises a junction box, and the circuit body built-in case is connected to a plurality of or all harnesses of a front harness, a floor harness, a cowl harness, an instrument panel harness, a roof harness, and a door harness, respectively. Connection structure of wire harness as described in 4. A circuit body built-in case is provided as a connector to be attached to the end of the wire group of the wire harness, and the circuit body built-in case incorporates a circuit body made of a bus bar, an electric wire or an FPC in the case body. The circuit body is provided with a tab or a female terminal portion and protruded into a recess provided in the case body, and the case body is provided with a mounting through hole for bolt penetration. While
A mounting through hole is also provided in the electrical junction box connected to the wire harness,
A plurality of circuit body built-in cases connected to a plurality of wire harnesses having different destinations are sequentially arranged in contact with each other through bolts, and the tab and the female terminal portion or tabs are connected via a relay terminal,
In addition, the electric connection box is arranged on the inner side of the vehicle body side or on the outer side of the circuit body built-in case to be arranged side by side, and is arranged in parallel through a bolt. A wire harness connection structure in which a plurality of wire harnesses are connected to an electrical connection box through a case with a built-in circuit body by connecting a nut to the bolt and connecting a plurality of wire harnesses. The case with a built-in circuit body is made of a rectangular flat plate or an L-shaped flat plate in which the circuit body is insert-molded, and is in contact with each other in a side-by-side manner, with a concave portion provided with the tab or female terminal portion on the corresponding contact surface. The wire harness connection structure according to any one of claims 1 to 3 , wherein the wire harness is in a contact state . 5. The wire harness connection structure according to claim 3, wherein the circuit body incorporated in the case with the built-in circuit body is in contact with the bolt to be penetrated and grounded . The circuit body in the case with a built-in circuit body is provided with a tab at the tip, the tab is projected in a parallel state on the side surface of the case body, and is connected via the terminal and terminal of the wire group of the wire harness or by welding. wire harness connection structure as claimed in any one of claims 1 to 5 have.

Images