JPS5983381A - 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 that has a large number of branch conductive paths formed by arranging bus bars and is used to connect m-wires of a wiring harness to form a branch circuit. It is something.

The wiring harness used for the internal wiring of my 1911 car requires many branch circuits in the middle, so
Is there a branch conductor that corresponds to the branch circuit of the wiring harness?
A wiring harness interconnection device (hereinafter simply referred to as an interconnection device) is a wiring harness interconnection device (hereinafter simply referred to as an interconnection device) that connects tf, m to a wiring board by arranging a bus bar, connects the wiring of the wiring harness, and centrally connects the required branch circuits. It is publicly known. In order to incorporate electronic circuits to perform the functions of each branch circuit, such as an intermittent wiper relay and a universal cut relay, the functions of the control elements necessary for each branch circuit, such as relays, diodes, and capacitors, are incorporated. An interconnection device is used in which components are collected for each branch circuit and housed in a separate casing, and each relay unit is connected to the middle of a pass bar conductive path by a tab-shaped terminal provided in the casing.

However, as automobiles have become more sophisticated in recent years, the number of fFt components attached to the car body has increased significantly and become more sophisticated.
In order to meet the demands for improved performance such as safety, drivability, and comfort, the number of branch circuits in wiring harnesses is increasing.
Moreover, there is a remarkable tendency to incorporate an extremely large number of electronic components into each branch circuit.

Therefore, in the above-mentioned relay unit type interconnection device, as the number of relay units increases, the relay unit gradually becomes larger, so the connection device becomes larger and the space required for mounting it on the vehicle body becomes larger. In addition, as the structure becomes more complex, the productivity of wiring harnesses gradually decreases.

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 collectively arranged, and a wiring board on which the required branch conductive path vY is formed by disposing a pass bar. A printed wiring board is mounted on the wiring board in a parallel three-dimensional manner, and a connection mechanism is provided for connecting a tab-shaped contact part formed at one end of the bus bar and a terminal part of the printed wiring board via a relay terminal, It is characterized by a structure in which functional component circuits are incorporated and connected to the pass bar conductive path.

A detailed explanation will be given below based on the drawings of the embodiment. First, first
The figure shows an embodiment of the present invention, in which a wiring board 1 has a plurality of thin insulating plates 1' stacked together, and each insulating plate 1 has a large number of branches corresponding to branch circuits of the wiring harness. 8N
, a bus bar 8 is disposed to form the road. The end of the bus spar 8 connected to the m-wire 10 of the wiring harness is formed into a tab-shaped contact portion 4 and is concentrated on the right side of the figure, and is attached to a protective case body (not shown).
When VJ is connected to the wiring board 1, the contact part 4 is surrounded by the frame provided on the case body as shown by the dotted line in the figure, and the connection 1 is made.
18, and insert the connector 9 at the end of the m wire 10,
Branch circuits necessary for connection and internal wiring of the vehicle are centrally configured via the busper 8. Further, the buspar 8 is divided at the middle gate portion of the branch conductive path formed by the buspar 8, and each divided end is provided with a tab-shaped contact portion 15.
They are arranged in a generally straight line at the middle gate of the wiring board 1, and are connected to eight electrical circuits on the printed wiring board 2, which will be described later, and are connected to the middle gate of the branch conductive path of the busper 8. The necessary 4t and '161;' component circuits are incorporated respectively.

On the other hand, the printed wiring board 2 consisting of a single rectangular board has six groups of functional parts such as necessary and sufficient relays, diodes, capacitors, etc. in the branch circuit of the wire link harness densely gathered on the board. Functional parts 6 are arranged on the bottom surface.
Each conductive path 7 is printed and wired as shown by the dotted line in the figure. The bases 11 of the conductive paths 7 are arranged in parallel at appropriate intervals on one side edge 2 of the printed wiring board 2, and their positions are such that when the printed wiring board 2 is attached to the wiring board 1, 4 is also a conductive component. This corresponds exactly to the contact portion 15 of the bus spar 8 in which the circuit is to be installed. Then, the printed wiring board 2 is placed on two holding frames 12 provided on the wiring board 1 with the side edge 2' facing forward, and
As shown by the dotted line in the figure, the busbar 8 is attached three-dimensionally in parallel with the wiring board 1, and is
A path 7 is connected to the contact portion 16 of the printed circuit board 2 and the conductor Y1 of the printed wiring board 2. In the figure, numeral 5 is a fuse insertion part for each branch circuit arranged in a concentrated manner on a part of the wiring board 1, and 18 is a fuse insertion part of the printed wiring board 2 formed in a step shape on the outer edge of the 1-point holding frame 12. This is a stopper for internal use.

Next, the connection mechanism will be explained.

Referring to FIGS. 2 to 4, when printed wiring board 2 is attached to a predetermined position on wiring board 1, the end portion of busper 3 connected to conductive path 7 of printed wiring board 2 is connected to conductive path 7 of printed wiring board 2. Side edge 2'
C1 "l if'it L/, and the side edge 2'
t
I'm l. Further, on the upper surface of the printed wiring board 2, in contact with the upper surface;
7, and a tab-shaped terminal 1 facing the tab-shaped contact portion 15
6 are shown in several rows, and the tab-shaped terminal 16 has the front half connected to the side edge 2.
protrudes from ', and its tip faces the tab-shaped contact portion 15 with a slight distance therebetween. Then, two clamping parts 18A18B that receive and sandwich the tab-shaped terminal 16 and the tab-shaped contact part 15 in a short groove body whose three sides are surrounded by plates, and the tab-shaped terminal 16 in which the receiver is inserted. A relay terminal 17 having a press-contacting piece 19 which is elastically press-contacted to one side of the terminal is provided, and together with the tab-shaped terminal 16 and the tab-shaped contact portion 15, constitutes a connecting device 4-j'j.

The pressure contact piece 19 of the relay terminal 17 is connected to the bottom plate 2 forming the groove body.
It is a cantilever-shaped elastic piece bent so that 0 is folded back in front and gradually 1 V\i backward, and the tab-shaped terminal 16 is inserted at the top 19' near 11□1.1 (free). The clamping part 18A18B has a deep groove shape with openings on the front and bottom surfaces of the groove body, and both side walls are cut out, and the tab-shaped terminal 16 is clamped. The tab-shaped contact portion 15 is sandwiched between the upper edge of the portion 18A and the top portion 19' of the pressure contact piece 19, and the tab-shaped contact portion 15 is sandwiched between both edges of the sandwich portion 18B. A small leg piece 16' is provided protruding from the lower surface of the tab-shaped terminal 16, and the small leg piece 16 is inserted into a mounting hole of the printed wiring board 2 and semi-Ifl connected to the conductive Nl path 7 on the back surface. Further, 21 at the end of the clamping part 18B is a "snatched part" which is added in consideration of the elasticity and durability of the clamping part 18B when clamping. The above connection mechanism is connected to the passper 8 in advance as shown in Figure 4.
The relay terminal 17 is attached to the tab-shaped contact portion 15 at the end, and then the printed wiring board 2 slides on the holding frame 12 and is inserted and inserted in parallel with the wiring board 1, and the tab is attached to the clamping portion 18A of the relay terminal 17. The shaped terminal 16 is press-fitted to connect the busper 8 and the conductive path 7.
is connected.

Next, FIG. 5 shows another embodiment of the connection mechanism, which is composed of a tab-shaped contact portion 15, a tab-shaped terminal 16, and a relay terminal 17 similar to those described above. However, the front ends of the tab-shaped terminals 16 are aligned with the side edges 2, the relay terminals 17 are provided with pressure contact pieces 19 above, and the receivers are formed so as to come into elastic contact with the upper surface of the inserted tab-shaped terminals 16. has been done.

FIG. 6.7 illustrates a preferred form of pressure contact between the pressure contact piece 19 and the tab-shaped terminal 16. As shown in FIG. 6, the pressure contact piece 19 is slightly curved and the edge portion of 1Ti1 16 or by providing a notch, groove, etc. in the center as shown in FIG. 7 to increase the etched portion and press contact, the conductive performance of the contact portion will be improved. Furthermore, it is preferable that at least one of the terminals 16 and relay terminals 17 be plated with nickel, tin, etc.).

In the above-mentioned interconnection device, the total functional components required for the branch circuit of the wiring harness are densely arranged on a single printed wiring board 2, and the necessary machine-type component circuits are connected via the connection mechanism. Since the buspar 8 is incorporated and connected to the 114 branch conductive paths, there is an excellent effect of making it extremely small and compact compared to the conventional TM type. That is, due to the structure of the conventional relay unit system in which the functional components of the branch circuit are housed in individual casings, there is a lot of wasted space within the casing, and the casing area becomes large.
The number of relay units that can be obtained in the interconnection device 1't is limited to, for example, 8 to 4, and some functional component circuits are inevitably attached between branch wires.

However, the interconnection device of the present invention has a very small size compared to the conventional structure because all the functional components are densely arranged on a single printed wiring board to offset wasted space. s It is more compact and the above-mentioned conventional difficulties are solved. In addition, it is fully compatible with the function F11 (increase in products and branch circuits) that will occur as automobiles become more sophisticated in the future, and can withstand the narrow installation clearance conditions that are allowed on the car body. .

In the interconnection device of the present invention, all of the many functional component circuits are integrated into a single printed wiring board, which simplifies the overall configuration of the wiring harness and saves 14% on production.
! This has the effect of increasing productivity by facilitating division of labor and mechanization.

- 10,000, the above-mentioned connection mechanism can be installed by making the printed wiring board 2 enter parallel to the wiring board l, so that the guide part on the wiring board 1,
The holding frame etc. are easy to use, making the installation simple and accurate. - Since the tab-shaped terminal 16 can be plated, etc., the conductive performance of the connection part is improved and stable. - The terminal 16 is plate-shaped. Since it does not protrude toward the side of the printed wiring board 2, it does not become an obstacle when connecting the functional component on the printed wiring board 2 and the conductive path 7 with a single port, and it has unique advantages such as making it easier to solder. This makes the effects of the present invention even more effective due to the printed wiring board 4n structure.

In addition, in the connection of the printed wiring board 2, the conductor 1T□l
W'? 57 is not necessarily connected strictly to the middle part where the buspar 8 is divided, but depending on the circumstances of the device, one end of the functional component circuit is connected to the buspar 8, and the other end is connected to the terminal of the connector 9 of the electric wire 10. Is there a direct connection?

In this way, the present invention corresponds to the recent P6 classification of automobiles,
The present invention provides an excellent interconnection device that meets these demands.

[Brief explanation of the drawing]

Figure 1.2 A perspective view showing an embodiment of the present invention. Figure 2: Front view (A) and top view (B) showing a terminal portion of an embodiment of the connection mechanism in the present invention. Figure: Part 12 shows an orthogonal projection view of the relay terminal of the first embodiment, (A) is a front view ('i!!
CB) is a left side view, (C) is a right side view, (D) is a bottom view, (one is a plan view, Figure 4: 2.8) Fig. 5N is a front view showing the state of use of the connection mechanism;
．． Figure 7: Cross-sectional view showing the pressure contact type 1tM of the pressure contact piece of the connection mechanism Main symbols: 1: Wiring board, 2: Printed wiring board, 3: Busper, 6: Functional parts, 7: 4 lead yy paths, 9: Connector, 10
: 'iQ, line, 12: Ho n frame, 15:'
l ';' shape (D'gh'A part, 16: tab-shaped terminal, 17: relay terminal, 18 A 18 B: clamping part, 19
: Pressure welding piece patent applicant: Sumitomo Electric Industries, Ltd. (one person) Representative: Patent attorney Oka Seimi0 Be42 Figure 2 (A) 2 1G 27 (A) @ 3 Figure (B) (C) 18A No. Figure 5 Figure 6 Figure 7

Claims (2)

[Claims] (1) Consisting of a combination of a wiring board on which a group of branch conductive paths is formed by busbar arrangement and a printed wiring board, the printed wiring board is mounted parallel to and three-dimensionally on the wiring board, and
The end of the bus bar is connected to the printed image KI Ili (lj
ll Formed in a tab-shaped contact portion standing approximately parallel to the #1 portion, and on the upper surface of the printed wiring board, a tab-shaped contact portion is formed in contact with the upper surface and facing the tab-shaped contact portion. The i:j connector is held together, and a relay terminal having the tab-shaped contact portion, two clamping portions for receiving the tab-shaped terminal, and a press-contact piece that comes into elastic contact with the tab-shaped terminal is provided. 1. An interconnection device for a wiring harness, characterized in that the wiring harness interconnection device has a structure in which a circuit of the printed wiring board is inserted into and connected to the branch conductive path. (2) Claims ff1T in which the first half of the tab-shaped terminal comprises a connection mechanism protruding from the side wall of the printed wiring board.
The wiring harness interconnection device according to item h(1).