JPS5928818A - Electric part for automobile - 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 automotive electrical component for an interconnection device of a wire harness incorporated in an automobile or the like.

(a) Joint Box Car With the advancement of electronics, the number of electrical components in automobiles continues to increase.

Electrical components are powered by batteries. Protection mechanisms such as fuses and circuit breakers, and electromagnetic relays are often installed between electrical components and batteries.

On the other hand, the switch mechanisms that drive each electrical component are installed near the driver's seat. The operating switch is connected in series to a circuit that includes a battery and a control winding of an electromagnetic relay.

The circuit that includes the operation switch and the control winding of the electromagnetic relay is called the trust system. The current that flows directly through the operation switch does not necessarily flow through the control winding.

In many cases, the current flowing through the operating switch is amplified and applied to the control winding of the relay. For this reason, the amplifier circuit is often integrated with the electromagnetic relay.

It is not only the amplifier circuit that is integrated with the electromagnetic relay.
There are also timing circuits that open and close relays intermittently.

Hereinafter, the electromagnetic relay, including the amplification, timing circuit, etc. provided integrally with the electromagnetic relay, will be referred to as an electromagnetic relay in a broad sense.

In a car, the wiring that connects batteries, switches, relays, and electrical components is called a wire harness.

Wire harnesses can be roughly divided into signal wire harnesses that connect control switches and electromagnetic relay control windings, electrical components,
It becomes a power system wiring harness that connects protection mechanisms, electromagnetic relay opening/closing contacts, batteries, etc.

Consider, for example, a fuse as a protection mechanism. Fuses shall be installed in areas to be replaced for service.

The parts of a JIJ vehicle that can be easily replaced are ( There are many things.

The fuse and the switching contacts of the electromagnetic relay must be connected in series. If the fuse and electromagnetic relay are separated,
The two must be connected by a soyano-ness. There is no problem if the number of electrical components is small, but if there are too many, the wiring harness becomes bloated and becomes difficult to disassemble.

Wire harnesses should be kept as small as possible.

In the end, it is better to place the electromagnetic relay near the fuse as well.

This is how the joint box was conceived.

A joint box has, for example, a three-layer copper plate circuit between four plastic plates, a fuse and an electromagnetic relay on the side, and a signal system and a power system wire harness attached removably.

Here, the copper plate circuit is a circuit made by punching out a copper plate, appropriately bending the bus bars, and arranging them so that they do not touch each other.

The reason for using three layers is to make the circuit three-dimensional and increase the degree of freedom in wiring. Depending on the case, there may be two layers or four layers.

Since the copper plate is thick, a depression corresponding to the thickness is formed on the surface of the plastic plate. Fit the busper into the depression.

The plus deck board V7c has through holes opening downward at -L in some places. The end of the buspar is bent,
Exit upward or downward from the through hole.

FIG. 1 is an exploded perspective view showing an example of a known joint box.

This explains the structure of the joint box.

The joint box consists of a large number of copper busbars sandwiched between four plastic insulating plates.

The four insulating plates are, in order from the bottom: lower plate 1, second-tier plate 2, third-tier plate 3, and fourth-tier plate 4. Although they are flat plastic plates, there are through holes and Shallow grooves are formed to accommodate many bus bars 5.

The bus bar 5 is a thin conductive plate made by punching out a copper plate. Most of them have a shape parallel to the longitudinal direction or the direction of lateral force, and are bent several times at right angles.

The passper 5 is placed on the lower plate 1, the second-tier plate 2, and the third-tier plate 3, respectively, and has a maze-like appearance as a whole.

On the same plane, the passers 5 are spaced apart from each other and do not intersect. Buspars 5 are not connected to each other,
There is no soldering.

The shapes and lengths of bus bars vary. Although they are bent, some have a single curved shape.

There is also a passer that branches into two trees in the middle.

In any case, the passper is bent in at least two places, so that it can be connected to a fuse, relay, or twist harness above it, or to a twist harness below it.

In many cases, a connecting portion is provided at the end of the passper 5. In the figure, this is the double-folded vertical end piece 6 that is obtained by folding the end of the passper 5 into two.

A through hole 7.7 is always bored in the vertical plate 2.3.4 of the upper folded end piece 6 at a corresponding position.

The upper folded end piece 6 may function as a plug piece into which the -it connector (not shown) is inserted.

In this case, the stopper and end piece 6 are often waved in the lateral direction.

''In the case where there is a bi-folded vertical end piece 6, a coupling fitting 8 having two bent cylindrical parts is inserted from above. In this example, the coupling fitting 8
A connecting piece of a relay (not shown) is inserted from above and connected to the upper folded end piece 6 of the pass bar 5.

The busper 50 with the upper folded end piece 6 is inserted into the fuse coupling fitting 9 from below.

The fuse coupling fitting 9 is made by bending a single metal plate, and holds the end piece 6 at the bottom, and has two lips at the top so that the fuse terminal can be fully fitted. There is.

Sixteen metal fittings mounting booths 10 are formed near the end of the three-tiered board 3. The upright end piece 6 is inserted through the through hole at the bottom of the fitting installation booth 10, and the fuse coupling fitting 9 is pushed in from above.

In this example, there are 14 fitting booths 10 in a straight line, and two fitting booths 10 are located next to them (not shown in the figure).

The pathper 5 must be connected to external circuitry, ie fuses, relays, wiring harnesses, in at least two places. Even in pathpers that are not branched, in three places,
Some are connected to external circuits. Some have 4 locations.

In the case of a complex-shaped pathper with branches, it is connected to external circuits at 3 to 5 locations.

Some of the passpers (d) on the bottom plate 1 of the lowest layer have all the connecting end pieces folded up.

However, most passpers have folded pieces on the top and bottom,
” 1 is connected in both directions.

For example, the wide busper of the electric power system, which also extends to the metal fittings mounting booth 10 of the three-tiered board 3, connects the fuse and electrical equipment, and has a vertical end piece 11 folded down at the end. Bottom folded end piece 11
are the through-holes of the third-tier plate 3, the through-holes 12 of the second-tier plate 2, and the lower plate 1.
It penetrates through the through hole 13 to the lower surface of the lower plate 1.

The lower vertical end piece 11 is shaped with horizontal waves. This is to prevent the connector from coming off when the connector (not shown) at the end of the wire/.-nes is inserted into the lower end piece 11.

In addition, the downwardly folded vertical end piece 14 at the terminal end of the pass bar 5 is adapted to be extracted from the through hole 15- to the lower surface of the lower plate 1.

The upper plate 4 is provided with a space for attaching a fuse and an electromagnetic relay.

There are 14 fuse claw side seats 16 along the long sword of the upper plate 4,
Two pieces are molded next to it.

- 1 board 4 has 16 tri fuselage seats, and is opposed to the 3rd board 3 metal fittings booth 10. A fuse (not shown) is inserted from the fuse mounting seat 16 with the terminal facing downward, and the terminal is inserted into the fuse mounting fitting 9 through the through hole 15'.

The top plate 4 also has a space for connecting to a tuia harness. This is the connector insertion tube 17, 18.

The connector insertion tubes 17 and 18 are cylindrical and contain 1 to 1.
The bi-folded standing end piece 6 of the passper 4 protrudes in two directions.

The ends of the wire harness that connect to the electrical components, battery, and operating switches are secured with appropriate connectors.

There is a female terminal (not shown) on the wire harness side in the connector, which clamps the bifold vertical end piece 6 of the connector insertion tube 17,18.

Although not shown in the figure, there are more connector insertion tubes on the lower surface of the lower plate 1. A number of folded upright end pieces 11.14 of the busbar protrude into the connector insertion tube.

The wire harness connector can be easily connected to the bottom of the joint box by inserting it into h and twisting it.

- The remaining space on the top plate 4 is a room 19, 20, 21 with a relay Jr. for all electromagnetic relays. Here, the relay includes a control circuit and the like.

The downward terminal of the relay is inserted into the relay terminal insertion hole 22, and is directly attached to the coupling fitting 8 of the corresponding busper.

The joint box configured as described above can be integrated by connecting the lower plate 1 and the lower plate 4 to each other.

1. At the side of the plate 4, coupling frame portions 23 and 24 are formed. Connecting claws 25 and 26 are protruded from corresponding sides of the lower plate 1. When the coupling frame parts 23.24 are fitted into the coupling claws 25.26, the upper plate 4 and the lower plate 1 are coupled.

In this way, the joint box is assembled.

(a) Increased number of relays Several fuses and electromagnetic relays are installed in the joint box, and wire harnesses connected to electrical components, batteries, and operation switches are connected via connectors ffi.

As the number of electrical components increases, so does the number of relays.

/For example, many things are required such as flasher relay, fiber control relay, fuconyl cut relay, seatbelt warning relay, forgotten key quaning relay, rear lamp disconnection detection relay, illuminated entry relay, etc. It's coming.

Since there are a large number of relays, conventional junction boxes that contain relays and the wiring that connects to them are bulky, and the path inside the box is also complicated.

It is necessary to make them smaller and cheaper.

By doing so, the number of electrical components can be further increased.0 (ri) The first electrical component for automobiles developed from the present invention is cheaper and easier to install and replace even if the number of relays increases. Provides automotive electrical components for easy wiring harness interconnection.

The automotive electrical component of the present invention has a joint box connection terminal and a wire harness connection terminal.

Embodiments will be described below with reference to drawings showing examples.

FIG. 2 is a schematic vertical sectional view of an electrical component for an automobile according to an embodiment of the present invention.

As shown in FIG. 1, the joint box 30 has a number of bussers sandwiched between several insulating plates. The buspar 31 has a folded end piece protruding above or below the joint box 30 for connection.

Unlike the joint box shown in FIG. 1, the joint box 30 does not have a space for mounting individual electromagnetic relays like a relay mounting chamber.

Several wire harness connection connector tubes 32 are provided on the bottom or top surface of the joint box 30, and wire harness connection terminals 33 are protruded from these.

Some ends of the bus spar 31: 1. The end piece 34 is folded up, and a connection terminal is provided for connecting an independent relay block 35.

The relay block 35 includes all electromagnetic relays and their control circuits, and is constructed on the second part of the printed circuit board 36.

The entire printed circuit board 36 and relay block 35 are surrounded by a circuit case 37, and a joint box 30
This is an electrical component having a terminal 40 connected to the terminal.

A portion of the terminal connected to the relay block 35 is continuous to a wire harness connection terminal 38 that is raised from the printed circuit board 36.

The electrical components including the relay block 35, the printed circuit board 35, etc. are provided parallel to the joint box 300 surface and on the upper surface of the joint box 30.

The wire harness connection connector 39 is connected to the electrical component case 3
7, surrounds the terminal end of the Tsuya harness connection terminal 38, and continues to the electrical equipment.
is directly connected to the Soyano-nes connection connector 39.

The remaining terminals connected to the relay block 35 are connected from a joint box connection terminal 40 to a path for the joint box.

A connecting fitting 41 connects the joint box connecting terminal 40 on the printed circuit board 36'' and the folded end piece 34 extending upward from the passper 31 of the joint box 30.

(1) Other Examples @ 3 FIG. 3 is a schematic cross-sectional view of an automotive electrical component according to another example.

The joint box 30 includes a large number of passpers 31, and the relay block 35 is provided on a printed circuit board 36 and is separated from the joint box 30.

Furthermore, the printed circuit board 36 and relay block 35 are provided on the upper surface of the joint box 30 in parallel thereto.

They also have in common that the relay block 35 and printed circuit board 36 are covered with a circuit case 37.

Wire harness connection terminal 3 placed on printed circuit board 36
8 passes through the joint box 30,
This example differs from the example shown in FIG. 2 in that it protrudes into the wire harness connection connector 39.

In this way, the connector of the wire harness that connects to other electrical components, batteries, operation switches, etc. is connected to the wire harness connection terminal 38 passed through the joint box 3 (1).The connector on the wire harness side is connected to the relay block. Since the side Tsuya harness connection terminal 38 is prevented from falling out, there is no fear that the relay block will fall out from the joint box 30.

(e) Effects of the present invention Since the electromagnetic relays, including the control circuit, are all assembled on a printed circuit board and further covered with a circuit case, and the joint box and relay block are detachable, the following effects are achieved.

One is that the electrical components are easy to manufacture.

In conventional joint boxes, control circuits were formed using printed circuit boards for each electrical component, and each was inserted into a chamber with two relays.

At Raikou IJJI, multiple electromagnetic relays and control circuits are mounted on a single printed circuit board, so the number of assembly steps is reduced.
It means being purified. The joint box is
Since all you need to do is attach the pass bar and fuses, the shape is simple and can be made thinner. Furthermore, without passing through the joint box passper from electrical components,
Since all the Tsuya harness connection terminals 38 are directly exposed, the number of passpers can be reduced compared to the conventional one.

Since the electrical components enclosed in the electrical component case 37 and the joint box 30 are separate bodies, inspection and replacement are easy when the relay block breaks down.

Since the relay block 35 (ri) is provided close to the top surface of the joint box 30, it is not customary to have to occupy the entire area of the joint box due to the presence of the relay block 35.

However, since the relay is mounted so that its longitudinal direction is parallel to the printed circuit board 36, it can be made somewhat lower.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an example of a conventional joint box. FIG. 2 is a schematic cross-sectional view of an automotive electrical component and a joint box with interconnection harnesses according to an embodiment of the present invention. FIG. 3 is a schematic diagram showing another embodiment. 1・・・・・・・・・・・・・・・・・・・・・Bottom
Board 2 - 2 stages Board 3 - 3 stages Board 4・・・・・・・・・・・・・・・・・・Top
Plate 5......Curve...Passer 6......Top folded end piece 7...
......Through hole 8...
...Joining metal fittings 9......Fuse joining fittings 10........
Metal fittings installation booth 11・・・・・・・・・・・・・・・
Bottom folded vertical end piece 12.13 .........Through hole 14...
・・・Bottom folded end piece 15・・・・・・・・・・・・・・・
・Through hole 16・・・・・・・・・・・・・・・・・・
・・Fuyusu゛Seikaza 17.18・・・・・・・・・
... Connector insertion tube 19.20.21...
Relay installation room 22... -...
・・Relay terminal insertion hole 23.24・・・・・・・・・
・・・Joining frame 25.26・・・・・・・・・Conclusion
Matching claw 30・・・・・・・・・・・・・・・・・・
Joint box 31-・・・・・・・・・・・・
・・・Busbar 32・・・・・・・・・・・・・・・
・・・・・・ Connection tube 33 for connecting wire harness
・・・・・・・・・・・・・・・・・・・・・ Wire harness connection terminal 34・・・・・・・・・・・・・・・・・・
・・・・・・Folded end piece 35 ・・・・・・・・・・・・・・・
・・ Relay block 36 ・・・・・・・・・・・
・・・・・・Printed circuit board 37 ・・・・・・ ・・・
・・・・・・Electrical component case 38 ・・・・・・・・・
・・・・・・・・・Wire or single wire connection terminal 3
9 ・・・・・・・・・・・・・・・・・・ Soyano・−
Ness connection connector 40 ・・・・・・・・・・・・・・・
...Joint box connection terminal 41...
・・・・・・・・・・・・Connection fittings Hikari
-Iro Isao Yutaka Hashi Shinbetsu

Claims (2)

[Claims] (1) Mount the relay block 35, which is composed of an electromagnetic relay, an electronic circuit including a semiconductor element, etc., on the printed wiring board 36, and connect the external terminals 38 and 40 to the printed wiring board 36 in the same manner as the claw-side electrical equipment. An electrical component for an automobile characterized by providing a connection terminal 38 for a wire harness and a connection terminal 41 for a joint box. (2) A passper 31 made of thin metal plates of various shapes is inserted between several insulating plates, and the end of the passper 31 protrudes outside and is connected to the wire node. A fuse is attached to the upper surface of the joint box 30 having a folded end 34 of the passper facing upward, and a relay block 35 and a wire harness connection terminal 38 connected to the relay block are mounted on the lower surface of the printed circuit board 36. , a joint box connection terminal 40 facing downward, and an electrical component surrounded by an electrical component case 37, and the pass bar of the joint box 30 is folded so that the relay block 35 is located on one side of the joint box 30. The military electrical equipment according to claim 1, wherein the end portion 34 and the wire harness connection terminal 38 of the electrical equipment are connected in a downward direction.