JPH0747935Y2 - Electrical junction box - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electrical junction box used for wiring an automobile.

[Conventional technology]

In a conventional electric junction box, a large number of fuses and relays are collectively provided, and a bus bar is used for the internal circuit configuration in order to absorb the joint portion of the wire harness.

FIG. 2 shows an example thereof, in which the main cover 1 and the under cover 2 house wiring board assemblies a, b ... Consisting of an insulating plate 3 and a plurality of bus bars 4. Then, a tab 5 standing upright on the bus bar 4 is inserted into one end of a relay terminal 8 provided with female terminal portions 7 at both ends by penetrating a dove hole 6 of the insulating plate 3 to cover the relay terminal 8 with both covers. The connector housing 9 for the wire harness, the connector housing 10 for the fuse, etc. provided on the above are projected so that the terminal connector 9'of the wire harness W, the fuse 11, etc. can be connected. 12 is a relay and 13 is a circuit breaker.

[Problems to be solved by the device]

As described above, the bus bar 4 is used for the internal circuit configuration, but the arrangement of the tabs 5 and the tab holes 6 in each layer of the insulating plate are penetrated, and the circuit handling is extremely complicated. If a change is required, even if the bus bar 4 is cut, it is impossible to make a large circuit change. Therefore, it is necessary to fundamentally change the circuit design and bus bar mold every time the vehicle type or grade to which the electric junction box is applied is changed, which causes a cost increase.

An object of the present invention is to provide an electric junction box that solves such problems, facilitates the change of the circuit configuration depending on the vehicle type and grade, and can be manufactured at low cost.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a wiring board assembly including a bus bar and an insulating plate is stacked and accommodated in a main cover and an under cover, and a dove for branch connection coupled to the bus bar is provided. In an electric connection box in which various connectors such as a fuse connector and a wire harness connector are formed by projecting into a connector housing provided in a main cover and an under cover, a part of the bus bar and its tab are connected to the electric wire by pressure. It is characterized in that it is composed of a pressure contact terminal.

Hereinafter, the above configuration will be specifically described with reference to the drawings illustrating an embodiment.

〔Example〕

FIG. 1 is an exploded perspective view showing an embodiment of the electric junction box of the present invention. The same components as those in the conventional example are designated by the same reference numerals, and the description thereof will be partially omitted.

In the figure, on the inner surface of the under cover 2, a plurality of electric installation grooves 14 are provided in parallel at a predetermined pitch, and a plurality of press-contact board fitting grooves 15 are provided orthogonally to the grooves 14. .

16 and 16 'are insulation displacement boards, each with multiple holes
17 are provided orthogonally to the arrangement of the wire disposing grooves 14.

18 and 19 are male and female pressure contact terminals,
The male pressure contact terminal 18 has a slot 18a at one end and a tab-shaped male terminal portion 18b at the other end, and the female pressure contact terminal 19 also has a slot 19a at one end and a female terminal portion 19b at the other end.

In order to avoid complication of the drawing, only the first-layer wiring board assembly a is shown, but normally, a plurality of wiring board assemblies are laminated and used as before.

The electrical junction box is assembled as follows.

First, the slot portion of the pressure contact terminal 18 or 19 is press-fitted and fixed in each hole 17 of the pressure contact boards 16 and 16 ', and each slot 18a, 19
Make a project on one side.

Next, the pressure contact board 16 'is fitted into the pressure contact board fitting groove 15 of the under cover 2.

Wire the electric wires 20 along the electric wire arranging groove 14, and press each pressure contact terminal.
The electric wire 20 is press-fitted into the slot 18a (19a) of the 18 (19).

Another press-connecting board 16 is placed on the group of wires 20 arranged, and press-connecting terminals 18 (19) are collectively pressed in the same manner as described above.

The wiring board assembly a is set on the undercover 2 from above (only the first layer in the figure).

Finally, the main cover 1 is covered and fixed to the under cover 2 with screws or the like, and fuses 11, relays 12 and the like are inserted into various connectors (housings) 10.

The above is an example in which the wire disposing groove 14 and the pressure contact board fitting groove 15 are desired to be provided in the under cover 2, but they can be provided in the main cover 1 if necessary.

[Operation] A branch circuit that replaces the conventional bus bar 4 and tab terminal 5 can be formed by the plurality of electric wires 20 and the pressure contact terminals 18 (19).

The circuit configuration of this branch circuit can be arbitrarily and easily changed by changing the number of electric wires 20, the number of pressure contact terminals 18 (19), and the pressure contact position.

The circuit composed of these pressure contact terminals 18 and 19 and the electric wire 20 should be changed especially depending on the load side of the fuse (11) in the bus bar 4 constituting the wiring board assembly a or the like, and the type and grade of the automobile. If it is used for a circuit part that is often requested, a part of the circuit configuration can be changed quickly and easily.

At the same time, the circuit pattern of the bus bar 4 inside the wiring board assembly a can be used as a common circuit that does not change depending on the vehicle type and grade, and cost reduction can be achieved by mass production of small types.

[Effect of device]

With the configuration of the present invention, the common base circuit is
If the bus bar is suitable for mass production and the circuit needs to be recombined depending on the grade variation, a pressure contact board corresponding to the grade variation can be used and the pressure contact pattern for the wire can be changed. And an advantage that it can be performed at low cost and quickly as compared with the conventional circuit changing means of the type in which the circuit is rearranged by using the bus bar.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electrical junction box showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a conventional electrical junction box. 1 ... Main cover, 2 ... Under cover, 3 ... Insulation plate, 4 ... Bus bar, 5 ... Tab, 9 ... Wire harness connector (housing), 10 ... Fuse connector housing, 14 ... Wire installation groove, 15 …… Pressing board fitting groove, 16,16 ′ …… Pressing board, 17 …… Hole, 18,19
... (male and female) insulation displacement terminals, 18a, 19a ... slots, 20 ... electric wires.

Claims (1)

[Scope of utility model registration request] 1. A connector housing in which a wiring board assembly comprising a bus bar and an insulating plate is stacked and accommodated in a main cover and an under cover, and branch connection tabs connected to the bus bar are provided on the main cover and the under cover. In an electrical junction box in which various connectors such as fuse connectors and wire harness connectors are formed by projecting to the inside, a plurality of parallel wire arranging grooves and a plurality of orthogonal electric wire arranging grooves are formed on the inner surface of the main cover or the under cover. A press-fitting board fitting groove is provided, and a plurality of holes are formed in the press-fitting board fitted into the press-fitting board fitting groove, and the press-fitting terminal is press-fitted into the hole, and the electric wire is press-fitted into the slot of the press-fitting terminal. An electrical junction box that is adopted and forms a circuit that corresponds to changes in vehicle type and grade.