JP4098461B2 - Electrical junction box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical junction box.
[0002]
[Prior art]
As a related technique of the present invention, for example, there is a technique disclosed in Japanese Utility Model Laid-Open No. 6-8031 shown in FIGS.
[0003]
In FIG. 9, the code | symbol J has shown the electrical junction box. The electrical junction box J is connected to a cover body 1 made of an insulating synthetic resin, sub-wire harnesses SW1, SW2, SW3 made up of a plurality of electric wires W sorted for each load system, and a sub-wire harness SW1. The back cover 2, the back cover 3 to which the sub-wire harness SW2 is connected, and the back cover 4 to which the sub-wire harness SW3 is connected are roughly configured. Each of the back covers 2, 3, 4 is abutted against the cover body 1 and fixed.
[0004]
As shown in FIG. 9, on the outer surface of the cover body 1, for example, a relay cavity 5, a fuse cavity 6, a female connector cavity 7 and a fusible link cavity 8 are appropriately disposed at positions corresponding to the back covers 2, 3, and 4. Is formed.
[0005]
FIG. 10 is an exploded perspective view of the main part when the electrical junction box J is viewed from the back side. As shown in the figure, between the cover body 1 and the back cover 2 and between the cover body 1 and the back cover 3, bus bars 10 and 11 bent in an L-shape are respectively interposed. These bus bars 10 and 11 constitute internal circuits of the sub-wire harnesses SW1 and SW2 in the electrical junction box J. Support walls 14 and 15 having bus bar holding grooves 12 and 13 are erected on the inner surface of the ceiling wall 1a of the cover main body 1, and various relays are provided at end portions and intermediate portions of the support walls 14 and 15. A plurality of terminal accommodating chambers 17 corresponding to the terminals 16 are provided in a protruding manner. FIG. 11 is an equivalent circuit diagram showing a state in which the sub wire harnesses SW1 and SW2 are connected to the main part of the electrical junction box J described above.
[0006]
[Problems to be solved by the invention]
However, in the above prior art, as shown in FIG. 9, the back cover 2, 3, 4 to which the sub-wire harnesses SW <b> 1, SW <b> 2, SW <b> 3 are connected is assembled to the cover body 1. When it becomes complicated, the number of back covers increases. When the number of the back covers increases, there is a problem that the flat area (projected area) of the cover body 1 increases and the electric junction box J becomes large. In particular, since the installation space is limited in an in-vehicle electrical junction box, the increase in size of the electrical junction box is a problem.
[0007]
Further, in this electrical junction box J, the bus bars 10 and 11 interposed between the cover body 1 and the back covers 2, 3 and 4 substantially constitute a circuit configuration, and thus are installed in the cover body 1. When the arrangement of the relay cavities 5, fuse cavities 6, female connector cavities 7, and fusible link cavities 8 is changed, or connection portions are added due to circuit changes, the bus bar pattern is changed or complicated. For this reason, in the in-vehicle electrical junction box, it is necessary to prepare bus bars each having a unique pattern when the vehicle type and standard are different. In addition, although this prior art is the electrical junction box J provided with the bus bars 10 and 11 as a circuit component, there may be a case where a circuit configuration with a wiring is performed. In this case, different wiring connection work is required for each type of electrical junction box.
[0008]
Furthermore, as shown in FIG. 9, the electric wire junction box J that is a power supply unit includes a plurality of circuit units, so that many electric wires W are concentrated, and the assembling property to the vehicle is deteriorated. there were.
[0009]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electrical junction box that can simplify and reduce the size of the electrical junction box to be connected, and can reduce the number of components and the number of assembly steps.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention according to claim 1 is a module plate in which a plurality of terminals respectively connected to the wire terminals are accommodated in a plurality of rows of terminal accommodating grooves, and a plurality of the module plates are provided. In the state where they are stacked, the protrusions provided on the terminals are placed in the predetermined through holes of these module plates , the connection bar is inserted into the predetermined through holes, and the connection flanges are connected to the protrusions of the predetermined terminals. In addition, a connection bar that hooks an insulating member on the protruding portion of the terminal, insulates the connecting hook portion, insulates the portion where the connection is not required, and connects predetermined wires between the respective layers to form a desired circuit is provided. An electrical connection box, wherein the terminal is elongated, and a wire connection portion to which a plurality of wire terminals sorted for each load system is connected on one side is connected to the connection bar on the other side. Multiple Electrical connection box, characterized in that the connection bar connecting portion is accommodated in the terminal accommodating groove provided.
[0011]
Therefore, in the first aspect of the present invention, the terminal accommodated in the module plate is connected to the wire connecting portion to which one end of the plurality of wires sorted for each load system is connected on one side and to the connection bar on the other side. Since it is formed in a long shape provided with a plurality of connection bar connection portions, the number of terminals accommodated in the module plate can be reduced.
[0012]
Thus, by reducing the number of terminals, the assembly of the terminals to the module plate and the connection of the electric wires to the terminals of the terminals become easy and easy, and therefore the number of steps for assembling the electrical junction box can be reduced.
[0013]
Further, by reducing the number of terminals, the configuration of the electrical junction box can be simplified, and the electrical junction box can be miniaturized accordingly.
[0014]
The invention according to claim 2 is the electrical junction box according to claim 1, wherein the terminal includes a bottom plate portion and a pair of side plate portions erected in the same direction from both sides of the bottom plate portion, The connecting bar connecting portion is formed of a plurality of protruding portions bulging outward from one side plate portion, the connecting bar is hooked on the protruding portion, and an insulating member is provided on the protruding portion of the terminal where connection is not required. An electrical connection box having a connection hook for hooking.
[0015]
In the invention according to claim 2 configured as described above, in addition to the operation of the invention according to claim 1, a plurality of protrusions are provided on the terminal, and the connection bar is hooked on the protrusion, so that connection is not required. By providing a connecting hook for hooking the insulating member at the location , the connecting bar and the terminal can be connected by hooking the connecting hook of the connecting bar to the protruding part of the terminal. It becomes easy.
[0016]
Moreover, a desired circuit structure and electric wire branch can be formed easily and reliably by selecting the protrusion part of the terminal which hooks the connection bar | burr part of a connection bar, and setting the electric wires which short-circuit with a connection bar.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of an electrical junction box 40 according to the present invention will be described with reference to FIGS.
[0018]
FIG. 1 is an exploded perspective view of the electrical junction box 40 of the present embodiment.
[0019]
The electrical connection box 40 includes a connection box main body 41, module plates 51, 52, and 53, a connection bar 54, and a connector housing portion 55.
[0020]
As shown in FIGS. 1 and 2, the connection box main body 41 includes a power supply unit 42 and a branch circuit unit 43 that extends to the side of the power supply unit 42.
[0021]
Various connector portions 44 such as a relay cavity, a fuse cavity, a female connector cavity, and a fusible link cavity are appropriately formed on the upper surface of the connection box body 41. The branch circuit portion 43 has side walls 45 and 46 standing upright at two side edges, a side edge facing the junction box body 41 and a side edge adjacent to the side edge. Thus, a module plate stacking portion 47 is formed. Furthermore, a plurality of branch wirings 48 branched from an internal circuit (not shown) of the junction box body 41 are arranged and laid on the upper surface of the branch circuit unit 43 to form a branch circuit.
[0022]
In the branch circuit unit 43, a laminated body 50 (see FIG. 6) formed by laminating module plates 51, 52, and 53, and the module plates 51, 52, and 53 are assembled and assembled to the laminated body 50. A connection bar 54 for connecting the accommodated wires is accommodated, and the connector housing part 55 is fixed to the branch circuit part 43, whereby the module plates 51, 52, 53 and the connection bar 54 are connected to the branch circuit part 43. Is held in the junction box body 41.
[0023]
As shown in FIG. 3, the module plates 51, 52, and 53 are partitioned by a rectangular plate body 20 having an area that fits on the upper surface of the branch circuit unit 43, and a plurality of partition walls 56 on the upper surface of the plate body 20. Terminal receiving groove 57.
On each of the module plates 51, 52, and 53 having such a structure, a plurality of terminals 59 for connecting electric wire terminals as shown in FIGS. 4 and 5 are placed. These terminals 59 are arranged on the module plates 51, 52, 53 according to a preset layout such as a circuit configuration formed by the laminated body 50 of the module plates 51, 52, 53 and the connection bar 54 and a position selection of the branch wiring. It is supposed to be arranged in.
[0024]
Here, the structure of the terminal 59 will be described with reference to FIG.
[0025]
The terminal 59 is formed in a long shape having a bottom plate portion 63 and a pair of side plate portions 64 and 64 which are erected by bending the bottom plate portion 63 in the same direction, and the module plates 51, 52 and 53. Are disposed in the terminal receiving groove portions 57 between the partition walls 56 in the width direction.
[0026]
The terminal 59 is provided with a wire connection portion 65 to which a wire end is connected on one side, and a plurality of connection bar connection portions 66 connected to the connection bar 54 on the other side.
The electric wire connecting portion 65 is formed by two pairs of press-fitting blades 64a, 64a, 64b, and 64b protruding inwardly from both side plate portions 64 and 64, respectively. The press-fitting blades 64 a and 64 b are adapted to cut the covering portion 60 of the electric wire W by press-fitting the electric wire W and contact the lead wire portion 61 for connection.
[0027]
Further, the connection bar connection portion 66 is formed by a plurality of protrusions 67 bulging outward from one side plate portion 64.
[0028]
The terminal 59 is set so as to be press-fitted between the partition walls 56 and is held on the module plate side by press-fitting. Further, the connection bar connection portion 66 is positioned in a plurality of through holes 58 formed in each of the module plates 51, 52, and 53.
[0029]
The connection bar 54 has a terminal portion 68 at the upper end portion, and a lower portion is a connection portion 69 connected to the connection bar connection portion 66 of the terminal 59.
[0030]
As shown in FIG. 7B, the connection portion 69 is formed with a connection collar portion 70 protruding outward from the connection bar 54.
[0031]
The terminals 59 are arranged on the module plates 51, 52, and 53, the module plates 51, 52, and 53 are stacked, and the connection bar portion 70 of the connection bar 54 is selectively used as a protrusion 67 at an appropriate position of the terminal 59. By hooking, a predetermined circuit can be configured.
[0032]
Next, the structure of the connector housing portion 55 that holds these module plates 51, 52, and 53 on the branch circuit portion 43 of the junction box body 41 and performs branch connection will be briefly described.
[0033]
The connector housing portion 55 covers the laminated body 50 of the module plates 51, 52, 53 placed on the branch circuit portion 43 from above and engages with the branch circuit portion 43. Thus, by covering the laminated body 50 of the module plates 51, 52, 53 with the branch circuit unit 43, the terminals 59 and the connection bars 54 are prevented from being exposed. In the connector housing portion 55, a plurality of slits 55a for leading out the electric wires W arranged on the module plates 51, 52, 53 are formed in parallel in the vertical direction (stacking direction).
[0034]
Further, as shown in FIGS. 1 and 7C, connector portions 71, 72, and 73 are formed on the upper surface of the connector housing portion 55. In the connection bar fixing portion 74 formed in the connector portions 71, 72, 73, the terminal portion 68 of the connection bar 54 is fixed so as to stand up as a connector pin (connector terminal).
[0035]
The configuration of each member has been described above. Next, a method for assembling the electrical junction box 40 of the present embodiment will be described with reference to FIGS. 5 (A) to 7 (C). Here, a case where three or more module plates are stacked will be described, and all the module plates will be described as 51.
[0036]
First, as shown in FIG. 5A, the terminals 59 are press-fitted and arranged in the terminal receiving grooves 57 of the respective module plates 51, and the terminals 59 are fixed to the module plate 51 side. At this time, it arrange | positions so that the protrusion part 67 provided in the terminal 59 may be located in the through hole 58 formed in the module plate 51. FIG.
[0037]
Next, as shown in FIG. 5B, the terminal of the electric wire W is connected to the electric wire connecting portion 65 of the terminal 59 arranged on each module plate 51. In order to connect the end of the electric wire W to the electric wire connecting portion 65, the covering portion 60 of the electric wire W is cut by pressing the end of the electric wire W between the press-fitting blades 64a and 64a and between 64b and 64b. The lead wire portion 61 is in contact with and connected to the press-fitting blades 64a and 64b.
[0038]
Thereafter, as shown in FIG. 6A, the plurality of module plates 51 are stacked in a predetermined order to form a laminated body 50, and as shown in FIG. It is placed on the module plate stacking portion 47. Further, as shown in FIG. 7A, the connection bar 54 is inserted into a predetermined through hole 58 of the uppermost module plate 51 of the laminate 50, and as shown in FIG. The connecting collar 70 is connected to the protrusion 67 of the predetermined terminal 59.
[0039]
As shown in FIG. 8, an insulating cap 80 formed of an insulating member is hooked on the protruding portion 67 of the terminal 59 at a location where the connection between the connection bar 54 and the terminal 59 is not required. The terminal 59 is insulated by crushing the connecting collar 70.
[0040]
Finally, as shown in FIG. 7C, a connector housing portion 55 is covered so as to cover the laminated body 50 of the module plates 51 placed on the branch circuit portion 43, and the lower end portion of the connector housing portion 55 And the branch circuit portion 43 are engaged by an engaging means (not shown). Thus, even if the connector housing portion 55 is placed on the laminated body 50 of the module plate 51, the electric wires W of the respective rows are accommodated in the slits 55 a of the connector housing portion 55, so that the electric wires W are led out from the connector housing portion 55. It won't interfere.
[0041]
Further, by covering the connector housing portion 55 on the laminated body 50 of the module plate 51 in this way, the connection bar 54 so that the upper end terminal portion 68 of the connection bar 54 stands up in the connection bar fixing portion 74 of the connector housing portion 55. The length of is set. As described above, the terminal portion 68 of the connection bar 54 rises on the connection bar fixing portion 74, so that it is connected to the connector portions 71, 72, and 73 to form a branch connector. This branch connector is appropriately connected to, for example, a vehicle load system.
[0042]
In this way, the assembly process of the electrical junction box 40 is completed.
[0043]
In the electrical connection box 40 of this embodiment, the terminal 59 accommodated in the module plate 51 (52, 53) includes a wire connection portion 65 to which the terminal of the wire W is connected on one side, and a connection bar 54 on the other side. Since it is formed in a long shape having a plurality of connection bar connection portions 66 to be connected, the number of terminals 59 accommodated in the module plate 51 can be reduced.
[0044]
Thus, by reducing the number of terminals 59, the assembly of the terminals 59 to the module plate 51 (52, 53) and the connection of the electric wires W to the terminals 59 of the terminals can be easily and easily performed. 40 assembly man-hours can be reduced.
[0045]
Further, by reducing the number of terminals 59, the configuration of the electrical junction box 40 can be simplified, and the electrical junction box 40 can be miniaturized accordingly.
[0046]
Further, in the electrical connection box 40 of this embodiment, the terminal 59 is provided with a plurality of protrusions 67, and the connection bar 54 is provided on the connection bar 54 so as to be selectively hooked on the protrusion 67. Since the connection bar 54 and the terminal 59 can be connected by hooking the connecting collar 70 on the protruding portion 67 of the terminal 59, this connection operation is simple and easy.
[0047]
Further, by selecting the protruding portion 67 of the terminal 59 that hooks the connection bar 70 of the connection bar 54 and setting the wires W that are short-circuited by the connection bar 54, a desired circuit configuration and wire branch can be formed easily and easily. be able to.
[0048]
Moreover, in this embodiment, the press-fit blades 64a, 64a, 64b, and 64b can easily cover the covering portion 60 of the wire W by press-fitting between the press-fit blades 64a, 64a, 64b, and 64b that make a pair of terminals of the wire W. The conductive portion 61 and the terminal 59 can be reliably connected by cutting into the. For this reason, in this embodiment, the electric wire W can be easily assembled | attached to the module plate 51 (52, 53) in which the terminal 59 was accommodated, and workability | operativity can be improved.
[0049]
Although the electrical connection box 40 of the embodiment has been described above, the present invention is not limited to this, and various design changes accompanying the gist of the configuration are possible. For example, in the above-described embodiment, the coated single-wire electric wire W is used, but it is of course possible to use a flat cable.
[0050]
【The invention's effect】
As is apparent from the above description, according to the first aspect of the present invention, the terminals accommodated in the module plate are connected to the terminals of a plurality of electric wires sorted by load system on one side. And a plurality of connection bar connection portions connected to the connection bar on the other side, the number of terminals accommodated in the module plate can be reduced.
[0051]
In this way, by reducing the number of terminals, it is easy to assemble the terminals on the module plate and connect the multiple wires sorted by load system to the terminal terminals. Man-hours can be reduced.
[0052]
Further, by reducing the number of terminals, the configuration of the electrical junction box can be simplified, and the electrical junction box can be reduced in size accordingly.
[0053]
According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the terminal is provided with a plurality of protruding portions, and the connection bar is hooked on the protruding portion, so that no connection is required. by providing a connecting hook for hooking the insulating member to the protrusion of the terminal, by hooking the connection hook the projecting portion of the terminal, it is possible to connect the connecting bar and the terminal, the connecting operation and easily It becomes easy.
[0054]
Moreover, a desired circuit structure and electric wire branch can be formed easily and reliably by selecting the protrusion part of the terminal which hooks the connection bar | burr part of a connection bar, and setting the electric wires which short-circuit with a connection bar.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an electrical junction box according to an embodiment.
FIG. 2 is a perspective view of a junction box body in one embodiment.
FIG. 3 is a perspective view of a module plate in one embodiment.
FIG. 4 is a perspective view of relevant parts for explaining a terminal placement position in an embodiment;
FIGS. 5A and 5B are perspective views showing a process of assembling an electrical junction box in one embodiment. FIGS.
FIGS. 6A and 6B are perspective views showing an assembling process of the electrical junction box in one embodiment. FIGS.
FIGS. 7A, 7B, and 7C are perspective views illustrating an assembling process of an electrical junction box according to an embodiment.
FIG. 8 is a perspective view showing an insulating cap that insulates a terminal according to an embodiment;
FIG. 9 is an exploded perspective view showing a conventional electrical junction box.
FIG. 10 is an exploded perspective view showing a conventional electrical junction box.
FIG. 11 is an equivalent circuit diagram of a conventional electrical junction box and a sub-harness connected thereto.
[Explanation of symbols]
40 Electrical connection box 51, 52, 53 Module plate 54 Connection bar 57 Terminal receiving groove 59 Terminal 63 Bottom plate 64 Side plate 65 Electric wire connection 66 Connection bar connection 67 Projection 70 Connection collar

Claims (2)

In columns terminal accommodating groove, and the module plates in which a plurality of terminals are accommodated, which are connected respectively to the wire end, into predetermined through holes of these modules plates while laminating the module plate into a plurality, wherein Protrusions provided on the terminals are arranged, a connection bar is inserted into a predetermined through hole, the connecting collars are connected to the protrusions of the predetermined terminals, and insulating members are connected to the protrusions of the terminals where no connection is required. An electrical connection box provided with a connection bar that smashes and insulates the connection flange and connects predetermined wires between each layer to form a desired circuit,
The terminal is long, a wire connecting portion to which a plurality of wire terminals sorted for each load system are connected on one side, and a plurality of connecting bar connecting portions connected to the connection bar on the other side is provided. An electrical junction box provided and accommodated in the terminal accommodating groove. 2. The electrical connection box according to claim 1, wherein the terminal includes a bottom plate portion and a pair of side plate portions erected in the same direction from both sides of the bottom plate portion, and the connection bar connection portion is one side plate. Formed with a plurality of protrusions bulging outward from the portion, the connection bar is hooked on the protrusion, and a connection hook for hooking the insulating member on the protrusion of the terminal is provided at a place where connection is not required An electrical junction box characterized by.

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