JPS5983371A - Wiring harness interconnection device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a wiring harness interconnection device used to configure a branch circuit by connecting wires of a wiring harness by connecting a large number of branch conductive paths formed by arranging bus bars. It is.

A wiring harness used for internal wiring of an automobile requires a large number of branch circuits in its intermediate portion, so branch conductive paths corresponding to the branch circuits of the wiring harness are consolidated on a wiring board by bus bar arrangement. A wiring harness interconnection device (hereinafter simply referred to as an interconnection device) that centrally configures a required branch circuit by connecting electric wires is well known. Then, in order to incorporate electronic circuits that perform the functions of each branch circuit, such as intermittent W/F parry relays and H/L power relays,
Control elements required for each branch circuit, namely relays,
Functional components such as diodes and capacitors are collected for each branch circuit and housed in individual casings, and interconnection devices are used that have relay units that are connected to the middle of the pass bar conductive paths through tab-shaped terminals provided in the casings. It is being

However, as automobiles have become more luxurious in recent years, there has been a shift in the car body;
As the number of electrical components used increases significantly and becomes more sophisticated,
In order to meet the demands for improvements in various properties such as safety, drivability, and comfort, the number of branch circuits in wiring harnesses has increased.
Moreover, there is a remarkable tendency to incorporate an extremely wide variety of electronic components into each branch circuit.

Therefore, in the interconnection device of the above-mentioned relay unit system, as the number of relay units increases and each relay unit gradually becomes larger, the connection device becomes larger and the space required for installation on the vehicle body becomes larger, which may cause trouble. arise,
Further, as the structure becomes more complex, problems such as a gradual decline in the productivity of wiring harnesses have arisen.

It is an object of the present invention to solve the above-mentioned conventional problems and to provide a small and compact interconnection device that is compatible with the increasingly sophisticated automobiles.

That is, the present invention consists of a combination of a single printed wiring board on which the functional parts necessary for the branch circuit of the wiring harness are arranged in a concentrated manner, and a wiring board on which the necessary branch conductive paths are formed by buspar arrangement. A printed wiring board is mounted on the wiring board in a parallel three-dimensional manner, and a tab-shaped contact portion provided between the conductive path of the printed wiring board and the passper of the wiring board, which does not yet receive the tab-shaped contact portion. It is characterized by a structure in which a functional component circuit is incorporated and connected in the middle of the buspar conductive path by a connection mechanism consisting of a receptacle-like contact portion.

A detailed explanation will be given below based on the drawings of the embodiment. First, first
The figure shows one embodiment of the present invention, in which a wiring board 1 has thin insulating plates 1' stacked in multiple layers, and each insulating plate 1' has a large number of branch conductive paths corresponding to branch circuits of the wiring harness. The constructed buspar 3 is disposed. Then, the pathper 3 is connected to the electric wire 10 of the wiring harness.
The end portion is formed into a tab-shaped contact portion 4 and concentrated on the right side in the figure, and when a protective case body (not shown) is covered with the wiring board 1, a frame portion provided on the case body The connection port 8 is formed by enclosing the contact portion 4 as shown by the dotted line in the figure, and the connector 9 at the end of the electric wire 10 is inserted and connected, and the branch circuit necessary for the internal wiring of the vehicle is connected via the busper 3. centrally organized. In addition, the buspar 3 is divided at the intermediate portion of the branch conductive path formed by the buspar 3, and each divided end becomes a tab-shaped contact portion 15, which gathers in a generally straight line 17 at the intermediate portion of the wiring board 1. They are connected to conductive paths of a printed wiring board 2, which will be described later, so that necessary functional component circuits can be installed and disconnected in the intermediate portions of the branched conductive paths of the busper 3.

On the other hand, the printed wiring board 2 consisting of a single rectangular board has six groups of all necessary and sufficient functional components such as relays, diodes, and capacitors in the branch circuit of the wiring harness densely arranged on the board. Functional parts 6 are placed on the bottom surface.
Each conductive path 7 is printed and wired as shown by the dotted line in the figure. The ends of the conductive paths 7 are arranged side by side on one side edge 2' of the printed wiring board 2 at appropriate intervals, and the positions are such that when the printed wiring board 2 is attached to the wiring board 1, the functional component circuits should be incorporated. It is designed to correspond exactly to the contact portion 15 of the bus spar 3. Then, the printed wiring board 2 is placed on two holding frames 12 provided on the wiring board 1 with the edge 2' facing forward, and is mounted three-dimensionally parallel to the wiring board 1 as shown by the dotted line in the figure. The contact portion 15 of the C1 busper 3 and the conductive path 7 of the printed wiring board 2 are connected by a connection mechanism to be described later. Reference numeral 5 in the figure indicates a heat insertion portion for each branch circuit arranged in a concentrated manner on a part of the wiring board 1, and numeral 13 indicates a guide stop for the printed wiring board 20 formed in a step shape on the outer edge of the holding frame 12. It's a piece.

Next, a connection mechanism between the tag-shaped contact portion 15 provided in the middle of the passper 3 of the wiring board 1 and the conductive path 7 of the printed wiring board 2 will be explained. 2 to 4, when the printed wiring board 2 is attached to a predetermined position on the wiring board 1, the end portion of the passper 3 connected to the conductive path 7 of the printed wiring board 2 is connected to the conductive path 7 of the printed wiring board 2.
It is formed in a tag-shaped contact portion 15 that is located near the side edge 2' and stands upright generally parallel to the side edge 2'.

Further, on the upper surface of the printed wiring board 2, a receptacle-shaped contact portion 17 is provided upright on the upper surface, perpendicular to the bipedal plate-shaped base portion 16 on the back surface of the printed wiring board 2, and into which the tab-shaped contact portion 15 is received. A terminal 18 having a diameter is attached to the recess, and the terminal 18 and the tab-shaped contact portion 15 constitute a connection mechanism. It should be noted that the receptacle-shaped contact part 17 is preferably provided at a position υ below the lower end of the plate-shaped base 16 in order to make it easy to receive the tab-shaped contact part 15, and the plate-shaped base 16 has a small leg piece 16' at the lower end. , and the small leg piece 16' is attached to the printed wiring board 2 (inserted through the hole J and soldered to the conductive path 7 on the back side). In the above connection mechanism, the printed wiring board 2 is attached from above the wiring board 1, the tab-shaped contact part 15 and the receptacle-shaped contact part 17 are press-fitted together as shown in FIG. 4, and the busbar 3 and the conductive path 7 are connected. be done.

In the interconnection device described above, all the functional components required for the branch circuit of the wiring harness are densely arranged on a single printed wiring board 2, and the necessary functional component circuits are connected via the connection mechanism. Since it is incorporated and connected to the branch conductive path constituted by the busper 3, it has an excellent effect of being extremely small and compact compared to the conventional structure. In other words, the conventional relay unit system described above, in which the functional components of the branch circuit are housed in individual casings, has a structure that requires a lot of wasted space within the casing, increasing the casing volume. ) is limited to, for example, 3 to 4, and some functional component circuits are unavoidably installed in the middle of the branch wires (=j).

However, in the interconnection device of the present invention, all of the functional components are densely arranged on a single printed circuit board to offset wasted space, so the interconnection device of the present invention is extremely small and compact compared to the conventional structure. , the above-mentioned conventional difficulties are solved. As automobiles become more sophisticated in the future, the number of functional parts will increase,
It is possible to sufficiently cope with an increase in the number of branch circuits, and to satisfy the narrow installation space conditions allowed by the vehicle body.

In addition, since the interconnection device of the present invention consolidates all of the many functional component circuits onto a single printed wire board, the overall configuration of the wiring harness is simplified, division of labor and mechanization of the production process, etc. This has the effect of improving productivity by making it easier to introduce.

On the other hand, the connection mechanism is as follows: Since the terminal 18 has a bipedal plate base 16 on the back side, there is little deformation during press-fit connection, making the connection operation easy and accurate.Even if the height of the tab-shaped contact portion 15 is low, Since it can be connected, it has unique advantages such as fewer restrictions on the molding of the busper 3 and easier molding, and the above-described effect of the present invention is achieved by effectively exerting the connecting action of the printed wiring board configuration. make it even more effective.

In addition, in the connection of the printed wiring board 2 described above, the conductive path 7 is not necessarily connected strictly to the intermediate part where the busper 3 is divided, and one end of the functional component circuit may be connected to the busper 3 depending on the circumstances of the device. and the other end is wire 1
It is also possible to connect directly to the terminal of connector 9 of
Such changes do not approach the gist of the present invention.

As described above, the present invention provides a useful interconnection device that is compatible with the recent trend toward automatic table grading and meets the demands thereof.

[Brief explanation of the drawing]

Fig. 1 2 A perspective view showing an embodiment of the present invention, No. 2゜3.4
Figure 2 shows the connection mechanism in the present invention, Figure 2 is a perspective view thereof, Figure 3 is a side view thereof, and Figure 4 is a perspective view of its usage state.Main symbols: 1: wiring board, 2: printed wiring board , 3: Busper, 6: Functional component, 7: Conductive path, 9: Connector, 10:
'Fi: line, 12: holding frame, 15: tab-shaped contact part,
16: plate-shaped base, 17: receptacle-shaped contact part, 18
: Terminal patent applicant: Sumitomo Electric Industries, Ltd. (1 person) Representative: Patent attorney Masaru Oka No. 2
Figure 3

Claims (1)

[Claims] (1) Consisting of a combination of a wiring board on which a branch conductive path is formed by arranging bus bars and a printed wiring board, the printed wiring board can be viewed three-dimensionally in parallel to the two sides of the printed wiring board, and The terminal Q of the bus her is formed in a tab-shaped contact portion standing approximately parallel to the side edge of the printed wiring board, and the printed wiring board has its own bipedal plate-like base on the back side and Take the end r- which is orthogonal and has a receptacle-like contact part that receives the tab-like contact part (=1 digit connection mechanism is j
and a wiring harness interconnection device characterized by a structure in which a circuit of a printed wiring board is incorporated and connected to the branch conductive path by the connection mechanism;