JPS594547Y2 - Connector for joint box - Google Patents

Description

[Detailed description of the invention] Conventionally, wiring within devices such as automobiles and home appliances has mainly been performed using electric wires.

As these circuits become more complex, a wiring system called a so-called wire harness is generally used, in which electric wires 7 are connected to joints 8, as shown in FIG.

However, as circuits become more complex, the number of joints increases when wires are joined together, leading to problems in reliability and handling.As a result, a single conductor busbar system, as shown in Figure 2, has been adopted for branches on the circuit. It is coming.

This method consists of a bus bar 1 as a conductor and an insulating plate 2, and a terminal 4 is provided at a predetermined position on the bus bar 1.

This product is stacked in one or more layers and installed inside a case, etc., and is used as a joint box in place of the wire joint shown in FIG.

The present invention relates to this joint box connector.

Now, the joint box shown in Fig. 2, which consists of a busper, an insulating board, a printed circuit board, etc., has a large number of connectors 9 (see Fig. 3, for example), and these connectors have a fourth
Connector 1 of input/output wire harness section 10 as shown in the figure
1 is fitted.

When inserting this wire harness side connector into the connector of the joint box, generally the number of poles of each of the many connectors 9 is changed to prevent incorrect assembly to a connector other than the intended one. However, if this method is used, a large number of different types of connectors 11 for the wire harness section must be prepared.

On the other hand, there is a method of using one type or a small number of types of wire harness side connectors.

As shown in FIG. 5, by using the empty hole 12 of the connector 11 shown in FIG. By making it blind, it is impossible to insert the terminal of the mating connector if it is in a position corresponding to this hole, and by changing the setting position of the blind hole, several different types of connectors can be used. Can be used differently.

However, when this method is used, if there are two or more holes that are not used, as shown in FIG. 6, it is difficult to use them properly.

That is, both the connector 11 shown in the figure and the connector 11 shown in figure A can be inserted into the mating joint box connector to which the connector 11 shown in Fig. C fits.

Similarly, the connector 11 in Figure A can be inserted into the mating connector of the connector 11 in Figure A, and the dummy pin 13
loses its meaning.

Note that reference numeral 11 in figures a', l)' and c' in FIG. 6 shows the connector before the dummy pin 13 is inserted.

Further, even when a dummy pin is used as shown in FIG. 7, the terminal 14 of the joint box may be deformed depending on the force applied and may be inserted incorrectly, which is a major drawback.

The present invention solves the above-mentioned problems.The joint box connector side housing is provided with a so-called foolproof hole to prevent incorrect insertion, and the mating harness connector is inserted with a foolproof hole. This is a characteristic feature.

Examples of FIGS. 8 to 12 will be explained below.

In the present invention, as shown in FIG. 8, a cut groove 16 is provided in a part of the outer wall of the joint box side connector 9, and on the wire harness connector side, as shown in FIG. An incorrect insertion prevention pin 17 made of resin or the like that fits into the cut groove 16 of the joint box shown in the figure is inserted into the unused hole from the mating surface side of the wire harness connector. The inserted state is as shown in the fitted cross-sectional view of FIG. 10.

If you try to insert the connector of this invention incorrectly, the cross-sections of the wire harness connector and joint box connector will have a relationship as shown in Figure 11, and the incorrect insertion prevention pin will hit the tip of the wall of the joint box connector, making it impossible to insert it. .

Furthermore, the present invention can prevent erroneous insertion even when there are many empty holes as shown in FIG.

The shape of the incorrect insertion prevention pin may be, for example, as shown in Fig. 12, and it can also be attached to the wire harness connector by tightening it with the gap 18, or by hooking it onto the uneven part of the connector with a lance. It's okay.

Also, a taper, undercut, etc. may be provided to facilitate installation.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the wire harness wiring system, Fig. 2 is an explanatory diagram of the busbar wiring system, and Fig. 3 is an explanatory diagram of the joint box (provided with the kerf 16 of the present invention).
Figure 4 is a perspective view of the connector of the input/output wire harness section, and Figure 5 is a perspective view of the connector in Figure 4 that is designed to prevent incorrect assembly (Figure a) and a perspective view of the dummy pin used therein (Figure 4). Figure b) and Figure 6 are front views (Figures a', l)' of the one corresponding to Figure 4, and front views (Figures a, l), c) of the one corresponding to Figure 5. Figures a', l)', c
'or a, l), and c are cases where the terminals of the connector are used in different situations, Figure 7 is a side view for explaining the drawbacks that occur when using the connector in Figure 5, and Figure a is a side view of the mating of the connector. Figure 8 is a perspective view of the connector installed in the joint box of the present invention, and Figure 9 is a perspective view of the harness connector of the present invention (Figure a). and side view (
Figure b), Figure 10 is a side view showing the state when the connector is correctly inserted and fitted in the present invention, and Figure 11 is a side view showing the state when the connector is incorrectly inserted in the present invention. 12A and 12B respectively illustrate side views showing the shape of the incorrect insertion prevention pin in the present invention. 1... Bus bar, 2... Insulating plate, 4...
...Terminal, 5...Lou connector, 6.
...Fuse terminal, 7...Electric wire, 8.
...Joint, 9...Joint box side connector, 10...Input/output wire harness section, 11...Wire harness side connector, 12...・・・Unused hole of connector, 13・
...Dummy pin, 14...Male terminal, 1
5... Female terminal, 16... Cut groove, 17
...Incorrect hole pin, 18...Gap.

Claims (1)

[Scope of utility model registration request] The connector installed in the joint box that performs electrical distribution has a cut groove 16 on its outer wall, and the mating harness connector has a cut groove 16 at a predetermined position protruding from the outer wall and into the outer wall cut groove 16 of the joint box side connector. A connector for a joint box in which an incorrect insertion prevention pin 17 having a mating part is inserted from the mating surface side using an unused hole.