JP3107144B2 - Manufacturing method of electrical junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electric junction box in which the specifications of a connector formed on a cover are changed and all other parts are commonly used.

[0002]

2. Description of the Related Art FIG. 3 shows an electric junction box for an automobile. A main cover 5 and an under cover 6 made of synthetic resin are shown in FIG.
The circuit board 4 on which the bus bar (circuit) 17 is arranged on the surface of the insulating plate 22 is provided inside the
Connecting part 1 formed integrally with the under cover 6
The fuse 23 and the connector 16 of the wire harness 20 are inserted into the connector 4 and the connector 9 ′ for connection with the circuit board 4. The main cover 5 and the under cover 6 are locked by a locking claw 25 and an engagement hole 26.

FIG. 4 shows a circuit in the electric junction box. The circuit includes a floor harness, a roof harness, and the like.
Various wire harnesses such as an engine main harness, an instrument panel harness, and a cowl harness are connected by connectors.

To form the electric junction box 3, the main cover 5, the under cover 6, the bus bar 17 and the insulating plate 22 are formed.
Although it is necessary to use a mold for molding each component and equipment for assembling, when a dedicated electric connection box 3 is created for a certain model, the mold is required especially when the production number of the model is low. Costs and equipment depreciation costs increase, and the cost of the electrical junction box 3 increases, so it is necessary to share the electrical junction box 3 for several types of vehicles and reduce mold costs and equipment depreciation costs Becomes

[0005] At this time, it is desirable that a plurality of types of vehicles have a common power supply system and a common configuration and form of wire harness.
Not all models are the same. In particular, in the wiring harness route, for example, in the sedan type, the wiring harness toward the rear combination lamp is routed on the floor part of the vehicle, but in the van type, there is a need to have variations such as wiring on the roof part because there is a carrier part .

That is, in FIG. 4, tail lamps, stop lamps, turning lamps and the like related to the rear combination lamp are connected via a floor harness in the sedan type and via a roof harness in the van type.

FIG. 5 shows the connection state. In the sedan type shown in FIG. 5A, a seven-pole floor harness 20 is connected to one connector 9 'of the electric connection box 3 by the external connector 1.
In the van type shown in FIG. 5 (b), a connector 19 is interposed between three poles of the seven-pole floor harness 20 connected to one connector portion 9 ', and a rear combination for a rear combination is provided halfway. The roof harness 21 is connected.

[0008]

However, in the connection structure of the conventional electric connection box, although the cost of the electric connection box 3 is reduced by sharing the electric connection box 3, for example, in the van type, Normally, it is desirable to connect the roof wire harness directly to the electric connection box to connect to the rear combination lamp. However, due to the presence of the loading platform as described above, cut the floor harness 20 'in the middle and Since the harness 21 has to be connected, the number of electric wires of the wire harnesses 20 'and 21 and the number of connectors and terminals increase, resulting in an increase in cost. There is a problem that the reliability of the electrical connection is reduced.

In view of the above, the present invention improves the workability of connecting the harness to the electric connection box while sharing the electric connection box, and also reduces the number of electric wires and the cost associated therewith. An object of the present invention is to provide a method for manufacturing an electric junction box that can improve connection reliability.

[0010]

In order to achieve the above-mentioned object, the present invention provides a method of integrally molding a connector portion with a cover by resin molding.
At the same time, start up and arrange multiple terminals on the circuit board,
The circuit board is accommodated inside the cover, and the plurality of terminals are accommodated.
A method for manufacturing an electric junction box in which
Of the molding die for molding one connector part
Top and molding metal for forming divided connector part
Select one type of frame and select one
The connector part or the divided connector part is selectively formed,
In the two connector sections and the divided connector section.
It is characterized in that a plurality of terminals are commonly arranged at the same position.
You.

The operation will be described below. By partially changing the top of the molding die, an electrical junction box having the same shape and different number of connectors only in the other portions is formed. For example, terminals are arranged at the same position in connector portions having different specifications of two electric connection boxes (for example, when one electric connection box has one connector portion and the other electric connection box has two connector portions). Thus, one external connector connection and two external connector connections can be selectively used.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of a method for manufacturing an electric junction box according to the present invention. These electric connection boxes 1 and 2 have completely the same internal circuit board 4 and under cover 6 as compared to the electric connection box 3 shown in FIG. 3 of the prior art, and a connector almost at the center of the main covers 7 and 8. Part (connector housing made of synthetic resin) 9
And only the specifications (shape and quantity) of 10 and 11 are different.

The specifications (shape and quantity) of the connector portions 9 and 10 and 11 of each of the main covers 7 and 8 are partially defined as indicated by chain lines 12 and 13 around the connector portions in FIGS. It can be easily changed by changing the frame (not shown). At this time, the other parts of the main covers 7 and 8 (the fuse connection parts 14 other than the connectors 9 to 11,
The molding die of (14 'etc.) is not changed at all. The circuit board 4 (see FIG. 3 of the prior art) and the under cover 6 inside the electric connection box are all commonly used.

The point is that two types (for example) of the tops 12 and 13 are set as the molds for molding the main cover only in the portions of the connectors 9, 10 and 11, and two types of connectors are changed by changing the tops 12 and 13. The part specification is obtained. As a result, most of the electric connection boxes 1 and 2 can be shared, and a part (connector parts 9 and 10, 11) can be obtained at a minimum cost.
Only the specifications can be changed.

In this embodiment, as shown in FIG. 1, one connector portion 9 located at the center in the width direction of the main cover 7 and two connector portions 1 located in parallel in the width direction of the main cover 8 in FIG.
0 and 11 are set. One connector part 9 of FIG.
Has a male tab terminal 15 ₁ to 15 ₇ 7-pole in this example, corresponding to the external connector 16 of the floor harness connection illustrated in FIG prior art 5 (a). Male tab terminal 15 ₁ to 15 ₇ are those rising formed from bus bars 17 in the electrical connection box (see Figure 3).

[0016] One of the connector portion 10 of FIG. 2 has a male tab terminal 15 ₁ to 15 ₄ of the four-pole, the other connector portion 1
1 has a male tab terminal 15 _{5-15 7} three-pole, likewise corresponds to the floor harness and the connectors 18 and 19 for roof harness connection of FIG. 5 (b). 7-pole male tab terminal 15
_{1-15 7} are arranged in common to the same position in FIG. 1 and the electrical connection box 1 of Figure 2. That circuit board 4 having a male tab terminal 15 ₁ to 15 ₇ are all shared.

FIG. 1 shows a sedan type vehicle, for example.
An electric connection box 1 having one connector section 9 is used, and the two connector sections 1 shown in FIG.
An electrical junction box 2 having 0,11 is used.

According to the single connector section 9 of FIG. 1, the number of external connectors to be inserted is smaller than when the two connector sections 10 and 11 of FIG. 2 are used. Also,
According to the two connector portions 10 and 11 shown in FIG. 2, the floor harness 20 'and the roof harness 2 shown in FIG.
The connection work with the device 1 is not required, and workability is similarly improved.

In the above embodiment, the main cover 7,
8 shows an example in which the connector portions 9 to 11 are formed. However, not only the main covers 7 and 8 but also the under cover 6 (see FIG. 3) can be similarly connected to the connector portion (not shown) by changing the frame of the molding die. ) Specifications (shape, quantity) can be changed.

[0020]

As described above, according to the present invention, a plurality of molding dies can be obtained by partially changing the molding die frame and changing only the specifications (shape and quantity) of the connector portion of the cover. Need not be set, and the cost of the molding die is reduced. In addition, since all parts other than the connector part are commonly used, it is not necessary to set up various types of equipment for assembling the electric junction box, thereby reducing equipment costs. These effects make it possible to reduce the cost of the electric junction box itself.

Further, in the case where one connector portion is formed substantially at the center of one electric connection box and two connector portions are formed at the same position of the other electric connection box by changing the frame of the molding die, for example, The problem was that the harness (floor harness, for example) following one external connector had to be cut off and another connector for the roof harness had to be connected. By doing so, the connection workability of the harness is improved, the number of wires of the harness is reduced, the cost associated therewith is reduced, and the reliability of the connection is further improved. Also, for example, connection of only the floor harness can be performed in the same manner as in the related art by using an electric connection box in which one connector portion is formed by changing a frame.

[Brief description of the drawings]

FIG. 1 is a plan view showing an electric connection box in which one connector portion is formed near the center by changing a frame in the present invention.

FIG. 2 is a plan view showing an example of an electric connection box in which two connector portions are formed at the same position by changing a frame.

FIG. 3 is an exploded perspective view showing a conventional electric junction box.

FIG. 4 is a circuit diagram showing a connection state between the electric connection box and an external harness.

FIG. 5A is a plan view illustrating an example in which one type of harness is connected to a connector portion, and FIG. 5B is a plan view illustrating an example in which two types of harnesses are connected.

[Explanation of symbols]

7,8 cover 9,10～11 connector portions 12 and 13 frames 15 _{1-15 7} terminal 17 busbar

Claims (1)

(57) [Claims] 1. A resin part is integrally formed with a connector part on a cover.
At the same time, start up and arrange multiple terminals on the circuit board,
The circuit board is accommodated inside the cover, and the plurality of terminals are accommodated.
A method for manufacturing an electric junction box in which
In the above, a molding die piece for molding one connector part,
Top of molding die for molding divided connector part
And one connector part on the cover or
The divided connector portion is selectively formed, and the one
The plurality of ends in the connector section and the divided connector section.
Electrical connection, characterized in that the
How to make a connection box.