JPH11164451A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembly workability for enabling automated assembly, and substantially reduce the size, improve the strength, and reduce the manufacturing cost. SOLUTION: In an electrical junction box having a plurality of kinds of circuits such as a relay circuit, a fuse circuit, etc., the respective circuits are mounted on a plurality of plates 10, 20 and 30 with respect to the kinds to compose independent circuit units. The respective plates 10, 20 and 30 of which the circuit units are constituted are attached three-dimensionally to the upper parts and lower parts of the side wall plates 51 and 52 of a side case 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box provided with a plurality of types of circuits such as a relay circuit and a fuse circuit. The present invention relates to an electric junction box capable of improving strength and significantly reducing manufacturing costs.

[0002]

2. Description of the Related Art FIG. 24 shows a conventional electric junction box mounted on an electric vehicle. FIG. 24A is a perspective view of an internal circuit, and FIG. 24B is a base plate constituting the internal circuit. (C) is a cross-sectional view taken along the line XX of FIG.

1 (a) to 1 (c), a conventional electric connection box mounted on an electric vehicle includes components (relays, fuses, bus bars, etc.) 101, 102, 103 on a single base plate 100. Are mounted, and are covered with a metal case 200.

[0004] In addition, a bracket 110 formed by press working is provided at a predetermined position on the base plate 100.
110 are welded, and a mounting hole 111 is formed in each bracket 110.

On the other hand, each component 101, 102, 103
A clip 121 is provided on the wire harness 120 for making the electrical connection of..., And the clip 121 is engaged with the mounting hole 111 of the bracket 110, and the wire harness 120 is routed on the base plate 100.

[0006]

However, in the above-described conventional electric connection box, the components 101, 102, 103,... Of each circuit are mounted on a single base plate 100. It was not possible to perform the assembly work separately every time.

Further, a large number of components 101, 102, 10 are provided in a limited mounting space on the base plate 100.
.. Must be mounted, and the components 101, 102, 103,... Must be screwed from the front side and the back side of the base plate 100 in order to effectively use the mounting space.

[0008] If an attempt is made to automate the assembling of such a conventional electric junction box, the assembly operation cannot be carried out by division of labor, so that the manufacturing line becomes extremely long and straight.
Further, since screwing from the front side and the back side of the base plate 100 is required, a reversing device for the base plate 100 is required. Therefore, it has not been practically possible to automate the assembly of the conventional electric junction box.

For this reason, the base plate 1 is manually
., Must be screwed one by one to assemble the components 101, 102, 103.
There is a problem that as the 2,103... Density increases, it becomes more difficult to assemble new components.

Similarly, the wiring of the wire harness 120 must be performed manually, and it takes a great deal of time to route the wire harness 120 while avoiding the densely packed components 101, 102, 103,. There was also a problem that it takes time.

In the above-described conventional electric junction box, the components 101, 102, 103,... Of the circuits A, B, C,. As the number of circuits to be used increases, the area of the base plate 100 expands, and there is a problem that the whole becomes planarly large.

Further, vibrations during traveling of the vehicle are concentrated on a single base plate 100, which may cause distortion or deformation, and there is a problem in strength. Such a decrease in strength becomes more remarkable as the number of circuits increases and the area of the base plate 100 increases.

In addition, in the above-described conventional electric junction box, the base plate 100 plays a role of a partition wall with the outside, so that the clip 121 of the wire harness 120 is engaged because it is necessary to ensure waterproofness. The mounting hole 111 cannot be directly formed in the base plate 100, and the mounting hole 111 must be formed in a bracket 110 separately provided in the base plate 100.

However, since the bracket 110 is pressed separately from the base plate 100 and welded to the base plate 100, the manufacturing cost of the bracket 110 itself is high, and the entire assembly is performed manually as described above. In addition to the necessity, the manufacturing cost of the entire electric junction box also increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and enables automation of assembly by improving the workability of assembling. Further, it is possible to reduce the size and strength of the assembly and to reduce the manufacturing cost. An object of the present invention is to provide an electric junction box capable of achieving a significant reduction.

[0016]

In order to achieve the above object, an electric connection box according to claim 1 is an electric connection box provided with a plurality of types of circuits such as a relay circuit and a fuse circuit. By mounting circuits on a plurality of plates, independent circuit units are formed, and the plates constituting these circuit units are three-dimensionally attached to at least the upper, lower, or intermediate portions of a side case having side walls. There is a configuration.

According to such a configuration, different types of circuits can be mounted on separate plates to form independent circuit units, and assembly can be performed separately for each circuit unit. Become like

As a result, a production line for each circuit unit can be separately provided, and unlike the conventional case, the production line does not become linearly long, and the assembly can be automated.

Also, since the components mounted on the same plate are limited to circuit units, a large number of components are not densely packed on the same plate, and can be easily assembled even by hand.

Further, since each circuit unit is configured to be three-dimensionally mounted on the side case, even if the number of circuits increases, the whole does not become planarly large, and the size of the electric connection box can be reduced.

In addition, since the plate is divided for each circuit unit, vibrations during traveling of the vehicle are dispersed and alleviated in each plate, which leads to an improvement in strength.
In addition, each plate three-dimensionally attached to the upper, lower, and middle portions of the side case serves as a beam, thereby substantially improving the strength of the electric junction box.

The electric connection box according to the second aspect of the present invention has a structure in which the screwing directions of the components of each circuit mounted on the plate are unified in one direction.

In the present electrical junction box, as described above, since the components mounted on the same plate are limited to each circuit unit, a large number of components are not concentrated on the same plate, and Can be unified in one direction. According to such a configuration, when the assembling work is automated, it is not necessary to turn over the plate, and the production line can be simplified.

According to a third aspect of the present invention, there is provided an electric connection box, wherein a mounting hole is formed in the plate mounted on an upper portion or an intermediate portion of the side case, and a clip is provided on a wire harness for making an electrical connection. The wire harness is arranged in a space formed below the plate by engaging with the mounting hole and attaching the plate to an upper portion or an intermediate portion of the side case.

According to this structure, the mounting hole for engaging the clip of the wire harness can be directly formed in the plate constituting the circuit unit without impairing the waterproofness of the electric junction box. Further, the mounting structure of the wire harness is simplified, and the manufacturing cost can be significantly reduced.

Further, if the plate constituting the circuit unit is mounted on the side case, the wire harness is routed in the space inside the side case. This eliminates the necessity of work such as routing, and can improve the assembly workability.

Further, the wire harness can be routed in the space in the side case simply by engaging the clip of the wire harness with the mounting hole of the plate and attaching the plate to the side case, and this operation can be automated. Can be achieved.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the electric junction box of the present invention will be described.

In the electrical junction box of the present embodiment, an independent circuit unit is formed by mounting a fuse circuit, a relay circuit, and a resistance circuit on a plurality of plates for each type, and these circuit units are configured. Each plate is configured to be three-dimensionally attached to the upper and lower sides of a side case having opposing side walls, and further includes a bracket for supporting the electronic circuit unit housed in the sub case at a fixed height, The electronic circuit unit is detachably attached to the side case via a bracket, so that the electronic circuit unit does not interfere with other members attached to the side case.

First, the structure of the plate, the bracket, and the side case will be specifically described with reference to FIGS.

FIG. 1 is an exploded perspective view showing a first upper plate, a second upper plate, a lower plate, a bracket, and a side case constituting an electric junction box according to the present embodiment. 2 shows a wiring harness wiring structure using the first upper plate. FIG. 2A is an exploded perspective view, and FIG. 2B is a sectional view of an assembled state. FIG. 3 is a perspective view showing a wiring harness wiring structure using the support portion of the bracket.

In FIG. 1, reference numeral 10 denotes a first upper plate, which is formed of a metal plate and has screw holes 1 at both side edges 10a, 10a of a bent peripheral edge.
0b is drilled. A mounting hole 10c is formed in the center of the first upper plate 10, and a clip 71 provided on a wire harness 70 for weak electricity is engaged with the mounting hole 10c (FIG. 2 (a)). )reference). Such a first upper plate 10 is connected to a fuse circuit unit 1 described later.
It becomes a mounting board for each component.

Reference numeral 20 denotes a second upper plate, like the first upper plate 10, which is formed of a metal plate and has screw holes 20b formed in the bent edges 20a, 20a on both sides. Such a second upper plate 2
Numeral 0 is a mounting board for each component of the relay circuit unit 2 described later.

Numeral 30 denotes a lower plate, which is formed of a metal plate, similarly to the first and second upper plates 10 and 20, and has screw holes 30b formed in the bent side edges 30a and 30a, respectively. It is. The lower plate 30 serves as a mounting board for each component of the resistance circuit unit 3 described later.

A bracket 40 is formed of a metal having a high thermal conductivity such as iron, aluminum or copper. The bracket 40 includes a plate portion 41 on which an electronic circuit unit (timer unit) 4 described later is mounted,
Four support portions 42, 42, 42, 42 provided integrally with the plate portion 41 and supporting the electronic circuit unit 4 at a certain height.
42, 42.

The plate portion 41 includes the electronic circuit unit 4
Screw holes 41a, 41a, 4 for screwing
1a and 41a are perforated. As shown in FIG. 4, the screw holes 41 a, 41 a, 41 a, 41 a are drilled at positions that do not overlap each other when viewed from the direction of the arrow in the figure, and screw the bracket 40 to the electronic circuit unit 4. Is easily checked.

Returning to FIG. 1, each of the four support portions 42 has a configuration in which a screw hole 42b is formed in a folded portion 42a at the tip, and a mounting hole 42c is formed in one of the support portions 42. It is. A clip 81 provided on a wire harness 80 for strong electricity is engaged with the mounting hole 42c.
reference).

When the bracket 40 is screwed to a side case 50, which will be described later, the bracket 40 supports the electronic circuit unit 4 at a fixed height so as not to interfere with other members attached to the side case 50. To do.

The bracket 40 is connected to the side case 5.
When screwed to zero, a space 43 is formed below the plate 41 (that is, below the electronic circuit unit 4 placed on the plate 41), as shown in FIG. Further, a wire harness 80 engaged with the mounting hole 42c of the support portion 42 via the clip 81 is arranged in the space 43 (see FIG. 3).

Returning to FIG. 1, the side case 50 is a frame composed of only long and short side walls, and upper and lower sides of opposed longitudinal side wall plates 51 and 52 are stepped. Screw holes 51a, 52a are formed near the upper and lower sides of the side wall plates 51, 52, respectively.

A first upper plate 10 constituting the fuse circuit unit 1 is screwed to the upper portion 50a above the side wall plates 51, 52. A space portion 14 is formed below the first upper plate 10 screwed to the upper step portion 50a, and the mounting hole 1 is formed in the space portion 14 via a clip 71.
The wire harness 70 engaged with Oc is wired (see FIG. 2B).

The lower part 5 of the upper part of each of the side wall plates 51, 52 is provided.
The second upper plate 20 constituting the relay circuit unit 2 and the bracket 40 on which the electronic circuit unit 4 is mounted are screwed to Ob.

Further, a lower plate 30 constituting the resistance circuit unit 3 is screwed to a lower portion of the side wall plates 51 and 52.

The screwing between these members will be described in detail in the following description of the procedure for assembling the electric junction box.

Next, the procedure for assembling the electrical junction box will be described with reference to FIGS.

Here, in the present electric connection box, as described above, the fuse circuit, the relay circuit, and the resistance circuit are formed by the first upper plate 10, the second upper plate 20, and the lower plate 3.
0 to form a separate and independent fuse circuit unit 1, a relay circuit unit 2, and a resistance circuit unit 3.
A production line is set up for each of the two or three, and the assembly work is performed separately.

In order to automate the assembly work by unifying the screwing directions of the components (relays, fuses, resistors, etc.) mounted on the plates 10, 20, 30 into one direction, the plate 10 , 20,30
This eliminates the need for inversion.

[Attachment of Bracket to Electronic Circuit Unit] FIG. 4 is a perspective view for explaining a procedure of attaching the bracket to the electronic circuit unit. In the figure,
The electronic circuit unit 4 is a timer unit that controls the ON / OFF timing of the relay, and includes a CPU (Cent
control circuit including ral processing unit)
a.

The four bolts projecting from the back surface of the sub case 4a of the electronic circuit unit 4 are attached to the bracket 4
Screw holes 41a, 41a,
Insert through 41a, 41a and fix with nuts. Thus, the bracket 40 is attached to the sub case 4a of the electronic circuit unit 4.

As described above, each screw hole 41a, 41a,
When viewed from the direction of the arrow in the figure, 41a and 41a are drilled at positions that do not overlap each other, so that the quality of screwing the bracket 40 to the electronic circuit unit 4 can be easily checked.

As the electronic circuit unit constituting the electric connection box, in addition to the above-mentioned timer unit, a discharge circuit unit for controlling discharge of electric charges accumulated in a capacitor such as a motor controller, a DC / DC converter, or an air conditioner. , A monitor unit for monitoring current, voltage, and temperature.

[Assembly of Resistive Circuit Unit] FIGS. 5 to 8 are a series of perspective views for explaining an assembling procedure of the resistive circuit unit. First, as shown in FIG. 5, a relay (30A) 31 is fixed to the lower plate 30 with bolts.

Next, as shown in FIG. 6, a resistor (17Ω) 32 is fixed to the lower plate 30 by screws.
Then, one terminal 32 a of the resistor 32 is connected to the positive terminal of the relay 31 by screwing.

Next, as shown in FIG. 7, two bus bar fixing legs 33, 3 having a height difference are provided on the lower plate 30.
4 is fixed with bolts. Thereafter, as shown in FIG. 8, the bus bar 91 is fixed to the bus bar fixing legs 33 and 34 with bolts. Finally, to the negative terminal of the relay 31,
The terminal 60a of the wire harness 60 is screwed and connected to complete the assembly of the resistance circuit unit 3.

[Assembly of Fuse Circuit Unit] FIG. 9
FIG. 12 to FIG. 12 are a series of perspective views for explaining an assembling procedure of the fuse circuit unit. First, as shown in FIG. 9, the six fuse holders 1
1,11,11,11,11,11 are fixed with bolts.

Next, as shown in FIG. 10, a nut is attached to each fuse holder 11, and the bus bar 92 or the fuse spacers 12, 12 having the same thickness as the bus bar 92 are inserted into the predetermined fuse holder 11.

Then, as shown in FIG.
The fuses (20A) 13 and 13 and the terminals 70a and 70b of the wire harness 70 are connected to the predetermined fuse holder 11 through which the fuse spacers 2 and the fuse spacers 12 are inserted. Thereafter, as shown in FIG. 12, the clip 71 provided on the wire harness 70 is inserted into the mounting hole 10c of the first upper plate 10, and the two are engaged. Thus, the assembly of the fuse circuit unit 1 is completed.

FIG. 13 is a perspective view for explaining a procedure for mounting the resistance circuit unit to the side case. In the figure, a lower plate 30 constituting the resistance circuit unit 3 is shown.
Is fitted into the lower part of the side wall plates 51, 52 constituting the side case 50, and the screw holes 30b and 51a, 52a are aligned with each other, and fixed with a total of six screws from both sides. Thereby, the resistance circuit unit 3 is attached to the lower part of the side case 50.

[Attaching Fuse Circuit Unit to Side Case] FIGS. 14 and 15 are a series of perspective views for explaining a procedure for attaching the fuse circuit unit to the side case. First, as shown in FIG. 14, the first upper plate 10 constituting the fuse circuit unit 1 is fitted into the upper step portion 50a on the side wall plates 51, 52 constituting the side case 50, and the screw holes 10b, 51a,. 5
2a is aligned with each other and fixed with a total of four screws from both sides.

Thus, the upper portion 5 of the side case 50 is
The fuse circuit unit 1 is attached to 0a. At the same time, the wire harness 70 attached to the first upper plate 10 is routed to the space 14 below the first upper plate 10 shown in FIG. 2B via the attachment hole 10c and the clip 71. You.

Thereafter, as shown in FIG. 15, the terminal 70c of the wire harness 70 and the terminal 44a of the electronic circuit unit 4 are connected to the bus bar 91 of the resistance circuit unit 3 by bolting.

[Assembly of Relay Circuit Unit] FIG.
FIG. 4 is a perspective view for explaining a procedure of assembling the relay circuit unit. In the figure, the second upper plate 20
Then, by assembling the relay (150A) 21 with bolts, the assembly of the relay circuit unit is completed.

[Attaching Relay Circuit Unit to Side Case, etc.] FIGS. 17 to 20 are a series of perspective views for explaining procedures such as attaching the relay circuit unit to the side case. First, as shown in FIG. 17, the second upper plate 20 forming the relay circuit unit 2 is fitted into the lower step 50b on the upper side wall plates 51, 52 forming the side case 50, and the screw holes 20b and 51a, 52
a is matched with each other and fixed with a total of four screws from both sides. Thereby, the relay circuit unit 2 is attached to the lower part 50b of the side case 50.

Next, as shown in FIG. 18, the negative terminal of the relay 21 constituting the relay circuit unit 2 is
The bus bar 93, the terminal 60b of the wire harness 60, and the terminal 44b of the electronic circuit unit 4 are inserted and connected together by tightening nuts.

On the other hand, the bus bar 94 is inserted into the positive terminal of the relay 21 constituting the relay circuit unit 2 and the predetermined fuse holder 11 constituting the fuse circuit unit 1, and the positive terminal of the relay 21 is connected to the positive terminal. The other terminal 32b of the resistor 32 constituting the circuit unit 3
And connect them by tightening nuts.

Then, as shown in FIG. 19, the fuse (250A) is inserted into the predetermined fuse holder 11 in which the bus bar 92 and the bus bar 94 of the fuse circuit unit 1 are inserted.
6 is connected by tightening the nut.

Thereafter, as shown in FIG. 20, the LED 8 connected to the terminal 80a of the wire harness 80 is
The LED bracket 7 is attached to the bracket 7 and is fixed to the second upper plate 20 with screws.

[Attaching Electronic Circuit Unit to Side Case, etc.] FIGS. 21 to 23 are a series of perspective views for explaining the procedure of attaching the electronic circuit unit to the side case. In FIGS. 21 and 22, the screw holes 42 b of the respective support portions 42 constituting the bracket 40 of the electronic circuit unit 4 are screw holes formed in the second upper plate 20 of the relay circuit unit 2 and the screw holes 42 b of the side case 50. It is fixed with a total of four screws so as to match the screw holes formed in one end of the lower portion 50b.

Thus, the lower portion 5 of the side case 50
The electronic circuit unit 4 is attached to 0b. In this manner, the electronic circuit unit 4 attached to the side case 50 is supported at a fixed height by the bracket 40, and does not interfere with other members attached to the side case 50 at all. A space 43 is formed below the electronic circuit unit 4 attached to the side case 50.

Next, as shown in FIG. 23, a mounting hole 42c formed in a predetermined support portion 42 of the bracket 40 is
Insert the clip 81 provided on the wire harness 80,
Both are engaged, and the wire harness 80 is routed in the space 43 below the electronic circuit unit 4.

The electrical junction box of the present embodiment has the following effects. First, a fuse circuit, a relay circuit, and a resistance circuit are mounted on the first upper plate 10, the second upper plate 20, and the lower plate 30, respectively, so that the fuse circuit unit 1, the relay circuit unit 2, The circuit unit 3 can be formed, and the assembling work can be performed separately for each of the circuit units 1, 2, and 3.

Thus, a production line for each of the circuit units 1, 2 and 3 can be separately provided.
The production line does not become long in a straight line, and the assembly can be automated.

Second, the same plate 10, 20 or 3
Since the components mounted on the circuit board 0 are limited to the circuit unit, a large number of components are not crowded on the same plate 10, 20, or 30, and can be easily assembled even by a manual operation.

Third, since each of the circuit units 1, 2, 3 is mounted three-dimensionally on the side case 50, even if the number of circuits is increased, the entire circuit is not enlarged in a plane, and the electric connection box is not enlarged. The size can be reduced.

Fourth, since the plates 10, 20, and 30 are divided for each of the circuit units 1, 2, and 3, vibrations during running of the vehicle are dispersed and reduced to the plates 10, 20, and 30, respectively. This leads to an increase in strength. Each of the plates 10, 20, and 30 attached three-dimensionally to the upper and lower portions of the side case 50 plays the role of a beam, thereby substantially improving the strength of the electric junction box.

Fifth, the same plate 10, 20 or 3
Since the number of components mounted on the same plate is limited to a circuit unit, a large number of components are not concentrated on the same plate 10, 20, or 30, and the screwing direction of each component is unified in one direction. Can be. Thereby, when the assembling work is automated as described above, each plate 10,
There is no need to invert 20, 30 and the production line can be simplified.

Sixth, a mounting hole 10c for engaging the clip 71 of the wire harness 70 is directly formed in the first upper plate 10 constituting the fuse circuit unit 1 without impairing the waterproofness of the electric junction box. Can be set up,
The mounting structure of the wire harness 70 is simplified, and the manufacturing cost can be significantly reduced.

Seventh, if the first upper plate 10 constituting the fuse circuit unit 1 is attached to the side case 50, the wire harness 70 is routed in the space 14 in the side case 50, and the In addition, the work of routing the wire harness while avoiding the components of each circuit is not required, and the assembling workability can be improved.

Eighth, the clip 7 of the wire harness 70
1 is engaged with the mounting hole 10 c of the first upper plate 10, and the first upper plate 10 is mounted on the side case 50.
It can be routed in the space 14 in the inside, and such work can be automated.

The electric connection box of the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the plates 10, 20, and 30 constituting the circuit units 1, 2, and 3 are mounted on the upper and lower portions of the side case 50. Can also.

[0081]

As described above, according to the electric junction box of the present invention, it is possible to automate the assembly by improving the assembling workability, and to reduce the size and the strength, and to increase the manufacturing cost. Can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first upper plate, a second upper plate, a lower plate, a bracket, and a side case constituting an electric junction box according to the present embodiment.

FIGS. 2A and 2B show an arrangement structure of a wire harness using the first upper plate. FIG. 2A is an exploded perspective view, and FIG. 2B is a sectional view of an assembled state.

FIG. 3 is a perspective view showing a wiring harness wiring structure using a support portion of the bracket.

FIG. 4 is a perspective view for explaining a procedure for attaching a bracket to an electronic circuit unit.

FIG. 5 is a perspective view for explaining an assembling procedure of the resistance circuit unit.

FIG. 6 is a perspective view for explaining an assembling procedure of the resistance circuit unit.

FIG. 7 is a perspective view for explaining an assembling procedure of the resistance circuit unit.

FIG. 8 is a perspective view for explaining an assembling procedure of the resistance circuit unit.

FIG. 9 is a perspective view for explaining an assembling procedure of the fuse circuit unit.

FIG. 10 is a perspective view for explaining an assembling procedure of the fuse circuit unit.

FIG. 11 is a perspective view for explaining an assembling procedure of the fuse circuit unit.

FIG. 12 is a perspective view for explaining an assembling procedure of the fuse circuit unit.

FIG. 13 is a perspective view for explaining a procedure for attaching the resistance circuit unit to the side case.

FIG. 14 is a series of perspective views for explaining a procedure for attaching the fuse circuit unit to the side case.

FIG. 15 is a series of perspective views for explaining a procedure for attaching the fuse circuit unit to the side case.

FIG. 16 is a perspective view for explaining a procedure for assembling the relay circuit unit.

FIG. 17 is a series of perspective views for explaining a procedure such as attachment of the relay circuit unit to the side case.

FIG. 18 is a series of perspective views for explaining procedures such as attachment of the relay circuit unit to the side case.

FIG. 19 is a series of perspective views for explaining procedures such as attachment of the relay circuit unit to the side case.

FIG. 20 is a series of perspective views for explaining a procedure of attaching the relay circuit unit to the side case, and the like.

FIG. 21 is a series of perspective views for explaining a procedure such as attachment of the electronic circuit unit to the side case.

FIG. 22 is a series of perspective views for explaining procedures such as attachment of the electronic circuit unit to the side case.

FIG. 23 is a series of perspective views for explaining a procedure of attaching the electronic circuit unit to the side case, and the like.

24A and 24B show a conventional electric connection box mounted on an electric vehicle, wherein FIG. 24A is a perspective view of an internal circuit, FIG. 24B is a perspective view of a base plate constituting the internal circuit, FIG. 3C is a sectional view taken along line XX of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fuse circuit unit 2 Relay circuit unit 3 Resistance circuit unit 4 Electronic circuit unit (timer unit) 4a Subcase 10 First upper plate 20 Second upper plate 30 Lower plate 40 Bracket 41 Plate part 42 Support part 10c, 42c Mounting hole 14 , 43 Space part 50 Side case 51, 52 Side wall plate 60, 70, 80 Wire harness 71, 81 Clip

Claims (3)

[Claims] In an electric connection box provided with a plurality of types of circuits such as a relay circuit and a fuse circuit, independent circuits are formed by mounting each circuit on a plurality of plates for each type. An electric junction box, wherein each plate constituting a circuit unit is three-dimensionally attached to an upper portion, a lower portion, or an intermediate portion of at least a side case having a side wall. 2. The electrical junction box according to claim 1, wherein the screwing directions of the components of each circuit mounted on the plate are unified in one direction. 3. A mounting hole is formed in said plate mounted on an upper portion or an intermediate portion of said side case, and a clip is provided on a wire harness for making electrical connection, and said clip is engaged with said mounting hole. The electric connection box according to claim 1, wherein the wire harness is routed in a space formed below the plate by attaching the plate to an upper portion or an intermediate portion of the side case.