JPH05344630A - Electric joint box equipped with ignition switch - Google Patents

Abstract

PURPOSE:To integrate an ignition switch being built in the instrument panel of automobile. CONSTITUTION:Circuit protective components such as fuse 3 and a branch circuit(bus bar circuit) having a circuit to be connected directly with an ignition circuit are provided in the inner circuit of an electric joint box A disposed in an instrument panel, wherein the branch circuit is connected directly with the ignition circuit thus integrating an ignition switch (e) and protective circuit components.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box with an ignition switch, which is mounted on an instrument panel of an automobile.

[0002]

2. Description of the Related Art In the vicinity of a driver's seat of an automobile, as shown in FIG. 9, a switch a, a unit b, an instrument panel d incorporating a meter c, an ignition switch (hereinafter referred to as IGS).
Since there are many electric components such as W) e, many electric wires for these connections are required, and the wire harness W
Tends to become bloated and complex. In the figure, w ₀ indicates a trunk portion of the wire harness, and w indicates a branch portion. Further, f is an electric connection box arranged at the lower right of the driver's seat, and a branch circuit (bus bar) for absorbing the joint in the harness and a fuse and fusible link as circuit protection parts are housed and mounted. ..

The current power supply circuit, as shown in FIGS. 10 and 11, is connected from the main electric wire 1 connected to the battery g to the ignition switch e via the electric connection box f by the electric wire 1a. Then, the circuit is distributed by the power circuit related to the ignition (electric wire 1d) and the power circuit related to the accessories (electric wires 1b, 1c), and then the circuit is protected by the fuse 3 in the electric connection box f arranged again in the lower right of the driver's seat. From the bus bar (branch) circuit 2 to the electric wire 4a
4d distributes the electrical components such as each switch a and instrument panel d. Therefore, a large number of reciprocating electric wires such as the electric wires 1a to 1d are generated between the periphery of the instrument panel d and the electric connection box f, which is a factor of enlarging and complicating the wire harness. Therefore, as shown in Japanese Patent Application Laid-Open No. 2-45238, there is also a method in which the internal circuit of the instrument panel d has a joint function, but a large number of circuits for reciprocating the electric connection box f and the ignition switch e are left. Has become.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and reduces the number of electric wires around the driver's seat of an automobile and simplifies the form of a wire harness. An object of the present invention is to provide an electric connection box with an ignition switch having a structure that facilitates the manufacture of a wire harness and can greatly improve the assembly work on the automobile manufacturer side.

[0005]

In order to achieve the above-mentioned object, an electric connection box with an ignition switch according to the present invention comprises:
The electrical connection box arranged in the instrument panel as claimed in claim 1, wherein a branch circuit having a circuit for directly connecting with a circuit protection component such as a fuse and an ignition circuit is provided in an internal circuit thereof. The ignition circuit is directly connected to the branch circuit, and the ignition switch and the circuit protection component are integrated.

[0006]

Since the electric junction box, the ignition switch and the circuit protection component are integrated, the electric wiring that reciprocates between the electric junction box and the ignition switch becomes unnecessary.
This reduces the number of wires around the driver's seat,
The form of the wire harness is simplified, and the manufacturing work and the assembly work on the automobile manufacturer side are greatly improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a wiring diagram around an instrument panel using an electric junction box with an IGSW according to the present invention, FIG. 2 is a block wiring diagram thereof, and FIG. 3 is a wiring explanatory diagram of the wiring harness. The same components as those of the conventional example will be described using the same reference numerals. In Fig. 1, electrical junction box A with IGSW
Is the seven fuses 3 in the electrical junction box f of FIG.
The busbar circuit 2 ′ protected by these is incorporated, and the ignition switch e is directly connected by the connector 5.

As is clear from the comparison between FIG. 1 and FIG. 10, the four electric wires 1a to 1d that reciprocate between the conventional ignition switch e and the electric connection box f are unnecessary. Further, as shown in FIG. 2, the power supply circuit to the switch a around the instrument panel d and the electrical equipment including the instrument panel d is IGSW.
Directly supplied from the attached electric junction box A, four electric wires 4a-4
It is possible to shorten d. Further, by incorporating the branching function of each signal circuit around the instrument panel into the electrical connection box A with IGSW, the electrical connection box A, the instrument panel d around the instrument panel, and the switches a are provided as shown in FIG. It is possible to connect with a simple circuit body such as the flat cable 6. In this way, the number of wires around the instrument panel is greatly reduced, and the arrangement form thereof is simplified.

FIG. 4 is a perspective view showing an example of an electric junction box with an IGSW having the above-mentioned internal circuit configuration, FIG. 5 is an exploded perspective view thereof, and FIG. 6 is a description of a connection structure between the electric junction box and an FPC. FIG. 7 and FIG. 7 are explanatory views of the connection structure with the instrument panel. In these figures, electrical junction box A with IGSW
Is a laminated circuit board A ₁ in which a plurality of bus bar circuit boards 7 are laminated.
And its cover A ₂ are fixed by known means such as screws and nuts.

The bus bar circuit board 7 is formed by arranging a plurality of bus bars 9 punched and formed in a desired pattern on an insulating substrate 8, and tab-shaped connection terminals 10 are erected continuously at the ends or in the middle of the bus bars 9. Then, as shown in FIGS. 4 to 6, these are collectively arranged in several places such as a fuse connecting terminal group 10A, an IGSW connecting terminal group 10B, and an FPC connecting terminal group 10C. Reference numeral 11 is a terminal insertion hole provided in the insulating substrate 8. The bus bar circuit board 7 has the fuse connecting terminal group 10A and the IGSW connecting terminal group 1
In addition to 0B and the like, circuits for connecting electrical components such as various meters and switches are also formed.

The cover A ₂ has a terminal group 10 for IGS connection.
Fuse block 1 with terminal insertion hole 11 'for B
2 and an FPC connection connector 13 are provided. The fuse block 12 has a plurality of fuse cavities 12a for the fuse 3 (see FIG. 1), and female-female relay terminals 14 of which one end is inserted into the connection terminals 10 of the fuse connection terminal group 10A are provided in the cavities. Is housed. F
The PC connector 13 has a slit-shaped FPC insertion port 13a, and the FPC relay terminal 15 is housed inside.

As shown in FIG. 6, this FPC relay terminal 15 has a square tube-shaped terminal receiving portion 15b provided upright at one end of a connecting base portion 15a having a U-shaped cross section, and a folded back elastic contact piece at the other end. 1
It comprises an electrical contact 15c with 5d. The connection terminals 10 of the FPC connection terminal group 10C are inserted from the base end side of the terminal receiving portion 15b, and the FPC insertion opening 13a is provided between the terminal receiving portion 15b and the electric contact portion 15c, for example, a composite switch a'described later. When the FPC 16 extended from (see FIG. 8) is inserted, the elastic contact piece 15d comes into contact with the copper foil circuit 16a and is electrically connected. Reference numeral 16b is a plate-like fixture that holds the end portion of the FPC 16 in a folded state, and has locking arms 16c on both sides.
Engages with the C-connector 13.

Further, as shown in FIG. 4, since each connection terminal 10 of the IGSW connection terminal group 10B projects from the terminal insertion hole 11 'of the cover A ₂ , the connector 18 of the switch unit 17 of the ignition switch e is connected. The connection terminal group 10B can be connected with one touch.

In order to connect the electrical junction box A with IGSW to the instrument panel d, instead of using the FPC 16 as described above, for example, as shown in FIG. It may be formed and connected by the female-female relay terminal 14 or the like as described above.

FIG. 8 shows a structure for mounting the electric junction box A with IGSW on an instrument panel. In the figure,
Reference numeral 19 is a case of the instrument panel d, 20 is a meter dial plate, and a switch box 21 having a multipolar connector housing 22 is provided below one side of the dial plate.
Reference numeral 23 denotes an instrument panel (instrument panel). According to the present invention, the instrument panel d is set in the case 19, the meter dial back plate 20 is assembled and fixed thereto by screws (not shown), and then the FPC 1 is attached to the switch box 21.
When the electric connection box A with IGSW to which the collective switch a'is connected by 6 is inserted and connected to the connector connection terminal group (not shown) of the multi-pole connector housing 22 for connecting the wire harness, the electric connection box A with IGSW is obtained. An assembly B is formed in which the instrument panel d and the collective switch a ′ are integrated.

Since this assembly B is assembled with one touch to the cluster finish 23a of the instrument panel 23, the automobile manufacturer side has the conventional instrument panel d, ignition switch e, collective switch a'and electrical connection box f (see FIG. 10). It is possible to omit the electric wiring between them.

[0017]

As described above, the IGSW of the present invention
The attached electric junction box is provided with a branch circuit having a circuit for directly connecting to the circuit protection component such as a fuse and the ignition circuit in the internal circuit of the electric junction box arranged in the instrument panel, and directly to the branch circuit. Since the ignition circuit is connected to the conventional electric junction box, the ignition switch and the circuit protection component are integrated, so that the number of wires around the driver's seat can be reduced and the form of the wire harness can be simplified. This can improve the manufacturing process of the wire harness and the assembling work on the automobile manufacturer side.

[Brief description of drawings]

FIG. 1 shows an ignition switch (IGS according to the present invention.
It is a wiring diagram of the instrument panel periphery using the electric connection box with W).

FIG. 2 is a block wiring diagram around an instrument panel and an engine room using the electric junction box with IGSW of FIG.

FIG. 3 is also a wiring explanatory diagram of a wire harness around an instrument panel using an electric junction box with IGSW.

FIG. 4 is a perspective view showing an example of an electric junction box with IGSW.

FIG. 5 is an exploded perspective view of FIG.

FIG. 6 is an explanatory diagram of a connection structure between the IGSW-equipped electrical junction box of FIG. 4 and an FPC.

7 is an explanatory diagram of a connection structure between the electric connection box with IGSW and the instrument panel in FIG. 4. FIG.

FIG. 8 is an exploded perspective view showing a structure for assembling the electric connection box with IGSW of FIG. 4 to an instrument panel.

FIG. 9 is a diagram for explaining the handling of a conventional wire harness around the instrument panel.

FIG. 10 is a wiring diagram around a conventional IGSW and an instrument panel.

FIG. 11 is a block wiring diagram around a dashboard including a conventional IGSW and an engine room.

[Explanation of symbols] A Electric connection box with ignition switch d Instrument panel e Ignition switch 7 Busbar circuit 9 Busbar 10 Connection terminal

Claims (3)

[Claims] 1. An electrical connection box arranged in an instrument panel, wherein a branch circuit having a circuit for directly connecting to a circuit protection component such as a fuse and an ignition circuit is provided in the internal circuit thereof. An electrical connection box with an ignition switch, characterized in that the ignition circuit and the circuit protection component are integrated by directly connecting the ignition circuit to. 2. The electric connection box with an ignition switch according to claim 1, wherein the internal circuit is provided with a branch circuit having a circuit for directly connecting to a meter circuit together with a circuit protection component such as a fuse and an ignition circuit. 3. The ignition circuit according to claim 2, wherein the internal circuit is provided with a branch circuit having a circuit for directly connecting to a circuit protection component such as a fuse and an ignition circuit, as well as a circuit for connecting electrical components such as a switch. Electrical connection box with switch.