JPH0729585B2 - Automotive wire harness equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a wire for an automobile, which simplifies a wire harness and can easily achieve automation of wiring and manufacturing in a limited vehicle interior space. Regarding the harness device.

[Conventional technology]

As shown in FIG. 8, a conventional wire harness has a structure in which a plurality of branch line parts b are led out from a main line part a in which a large number of electric wires are bundled by tape winding, and the junctions are distributed and arranged at appropriate places of an automobile. It is connected to the block d and electrical components at various places via a connector c.

There are three methods of deriving the branch line portion b: one in which the electric wire in the main line portion a is simply bent, one in which the joint terminal is used to connect to the middle portion of the electric wire, and one in which the junction block is used.

Among them, the method using the joint terminal requires a number of steps such as stripping the intermediate portion of the wire, crimping the terminal, winding tape on the crimping portion, etc., so automation is also difficult and enlargement of the wire harness is inevitable.

On the other hand, the junction block is generally constructed by accommodating a plurality of fuses, relays, etc., and a branch circuit formed by bus bars. Therefore, for example, as disclosed in Japanese Examined Patent Publication (Kokoku) No. 57-34132, junction blocks are dispersed and arranged at appropriate places such as in the engine room of an automobile or near the instrument panel, and these blocks are connected by a main line portion. By connecting and wiring for various electric components through each block, the number of branch lines leading from the main line portion can be greatly reduced and the wiring form can be simplified. However, when most of the joints are absorbed in the junction block, the number of terminals and circuits in the block increases and the number of electric wires that make U-turns in the main line also increases. Therefore, the effect of suppressing enlargement of the main line is small. .

[Problems to be solved by the invention]

Since the number of in-vehicle electrical components tends to increase more and more in recent years, as long as the basic form of the wire harness is a structure in which a large number of electric wires are bundled by tape winding or the like, enlargement is inevitable and a considerably large installation space is required. I need. Further, since it is not possible to absorb all branch lines for the main line into the junction block, it is difficult to automate the production of the wire harness.

An object of the present invention is to provide a wire harness device that solves the above problems, is optimal for preventing enlargement, and can be easily installed in a narrow space and mass-produced by automation.

Configuration of the Invention [Means for Solving the Problems (First Invention)] In order to achieve the above-mentioned object, a plurality of fuses and relays and other control parts are housed in appropriate places in the vehicle of the present invention. The junction blocks are arranged in a distributed manner, and the junction blocks are connected to each other by a main part of a wire harness including a power line connected to an on-vehicle power supply and a signal line connected to the relay, and arranged in various places in the vehicle. In a wire harness device for an automobile, in which electrical components are connected to a branch line portion derived from the junction block or the main line portion of the wire harness, the main line portion and the branch line portion of the wire harness are flattened with a plurality of parallel conductors. It consists of a flat harness that is insulated and fixed. A plurality of junction blocks are connected integrally with each other with or without a connecting portion, and the flat harnesses of the main line portion and the branch line portion are overlapped with each other so as to be electrically connected by permanently connecting desired conductors. It is characterized by that.

The above configuration will be described with reference to the drawings. In FIG. 1, A is a flat harness that constitutes a trunk part of a wire harness, B ₁ and B ₂ are flat harnesses that also constitute branch lines, and C ₁ and C ₂ are Each of the junction blocks is shown, and the two blocks C ₁ and C ₂ are connected to the flat harness A.

The flat harness A constituting the main line portion has a structure in which a plurality of parallel conductors 2 are arranged on an insulating substrate 1 made of synthetic resin, and the conductor is covered with another insulating substrate (or insulating sheet) 1 '. . The flat harness A can be freely formed by providing a bent portion A ₀ at a right angle as shown in the figure or bending it in an oblique direction according to the installation route in the vehicle. It is not always necessary to use the conductors 2 having the same standard capacity. For example, a combination of various standards such as a power line connected to an in-vehicle power source (battery or alternator) for energizing a load and a signal line for relay operation may be combined. Can be installed. In addition, the conductor 2 is the junction block C ₁ , C
It is arranged to include both the one that connects between the _two and the one that is not connected and is connected to another junction block (not shown).

The flat harnesses B ₁ and B ₂ that make up the branch lines are shown in Fig. 2 a and b.
As shown in, the conductor 4 is formed in a plurality of parallel grooves 3a provided in the insulating substrate 3. Each flat harness B ₁ , B
Reference numeral ₂ has a connector portion 7 composed of a round pin terminal 5 as a terminal portion connected to one end of the conductor 4 and a connector housing 6 integrally formed with the insulating substrate 3. The connector housing 6 is assembled by integrally forming a wall member 6b having a support groove 6a for the pin terminal 5 at the end of the insulating substrate 3 and fitting and fixing a frame member 6c to the wall member 6b.

The flat harness A and the flat harness B ₁ (B ₂ ) are connected as follows. As shown in FIG. 1, the conductor 4 is overlapped with the conductor 2 with the insulating sheet 8 interposed therebetween. The insulating sheet 8 and the insulating substrate 3 are provided with a plurality of holes 8a and 3b required for connection, and the conductors 2 and 4 of the flat harness A and B ₁ are spot-welded and soldered through these holes 3b and 8a. Permanent connection is made using known means such as attachment.

In the same manner as the flat harness B ₁ (B ₂ ), the flat harness A is formed with the connection portions D ₁ and D ₂ for the junction blocks C ₁ and C ₂ . Each connection part has input / output connector parts 7 ₁ and 7 ₂ and is fitted and connected to corresponding connector parts (not shown) of the junction blocks C ₁ and C ₂ .

There are no particular restrictions on the types of junction blocks C ₁ and C ₂ used here.
A relay block, a combination of both, and various control units, such as a key removal prevention alarm unit, a wiper control unit, and a power window control, can be used alone or in combination with the fuse block. .

[Work]

In the wire harness device of the present invention, two junction blocks C ₁ and C ₂ arranged at appropriate places of the automobile.
The main line portion connected to is composed of a flat harness A.

Since the flat harness A has a thin flat plate shape, it can be easily arranged in a narrow space such as the backside of an instrument panel (instrument panel) of an automobile, and even if the flat harness A is placed along the floor surface of the vehicle, Does not take up space.

Further, the flat harness A has a simple structure in which a plurality of conductors 2 are arranged side by side on an insulating substrate 1, and branch lines (flat harnesses B ₁ and B ₂ ) can be led out at any place,
Further, since each branch portion is unitized, automation of manufacturing as a whole can be easily achieved.

Furthermore, since the branch connection to the flat harness A that is the main line portion, that is, the branch line portion can be easily led out, the following action occurs.

FIGS. 3a and 3b respectively compare circuits of the present invention and a conventional wire harness device.

In FIG. 3b showing a conventional example, a portion X is provided with branch bus bars e ₁ and e ₂ in a junction block d, and electric wires f ₁ and f ₂ are provided.
Shows a state in which the diameter of the trunk portion a due to the joints of the electric wires is prevented from being increased. As a result, the number of circuits and the number of connection terminals in the junction block increases, and the number of electric wires in the main line portion a increases. The electric wires f ₁ and f ₂ indicated by thick lines are a simple representation of such a state.

According to the present invention, as apparent from FIG. 3a, it is not necessary to centrally provide the branch busbars in the junction block C ₁ (or C ₂ ), and the joints are flat harnesses A and B ₁ (as described above). B ₂ ) and connection. Similarly, electronic components included in the junction block,
For example, a joint unrelated to the fuse g or the relay h may be absorbed by the flat harnesses A and B ₁ outside the block.

As a result, the number of main wires (conductors) of the flat harness A, which is the main line, is reduced, and it is not necessary to run a long distance like the wires f ₁ and f ₂ shown by thick lines, and it is possible to connect various electrical components at the shortest distance. This helps reduce the weight of the wire harness itself. Further, since the junction block has almost no branch busbars, the number of circuits and the number of terminals are greatly reduced, and the internal structure is simplified and the size and weight are reduced. Figure 3 a thick line conductor 2 ₀ at 4 ₀ respectively corresponding to the wire f _1, f _2.

〔Example〕

4A and 4B show another embodiment of the present invention, in which two junction blocks C ₁ ′ and C ₂ ′ are integrally formed and connected to the flat harness A.

That is, a plurality of bus bars shaped conductor 4 'to be connected via an insulating sheet 8, the conductors 4' to the conductor 2 of the flat harness A a group junction block C ₁ '
It is configured as an internal circuit of (C ₂ ′) or a part thereof. A group of tab-shaped male terminals 5'standing up and connected to one end of the conductor 4'is positioned in the connector housing 9 of the insulating substrate 3'to enable direct connection of electronic components such as the relay h and the fuse g. is there. Of course, it is also possible to connect to electrical equipment via a connector. In addition,
The insulating substrates 1 and 3 ', the insulating sheet 8 and the like are molded together with the conductors 2 and 4'.

In this way, the trunk portion is formed of the flat harness A, and the branching conductor 4'is interposed, so that it can be integrated with the junction block.

FIGS. 5a, 5b and 6 show another method of connecting the flat harness which constitutes the main line portion and the branch line portion, respectively.

In FIGS. 5a and 5b, the conductor 2'of the flat harness (main line portion) A is formed into a narrow strip shape by punching a thin sheet metal and the like, and a pressure contact terminal having a slot 10a from the side edge of the conductor 2 '. 10 are standing and coupled. The pressure contact terminal 10 may be formed as a separate member and may be permanently connected to the conductor 2'by means such as spot welding.

In this case, the long hole 8b through which the pressure contact terminal 10 passes through the insulating sheet 8
With the provision of, the conductor 4 on the flat harness B side can be press-fitted into the slot 10a and easily joined.

FIG. 6 shows an insulating substrate 1 supporting a conductor 2 on the flat harness A side, a plurality of grooves 1a for arranging conductors and holes for connection.
While the conductor 1'is provided, the conductor 4'on the side of the flat harness B is formed into a narrow strip shape, and the slot 4a is formed in the conductor 4'as described above.
An example in which a pressure contact terminal 10 having is shown is provided.

In this case, the perforated insulating sheet 8 can be omitted, and one end of the conductor 4'can be used as it is as the male tab terminal 5 '.

[Means for Solving Problems (Second Invention)] Another invention for achieving the above-mentioned object is a plurality of junction blocks in which fuses, relays and other control parts are housed at appropriate places in a vehicle. And the junction blocks are connected to each other by a trunk portion of a wire harness including a power line connected to an in-vehicle power source and a signal line connected to the relay, and electrical components arranged in various places inside the vehicle. In a wire harness device for an automobile, in which an article is connected to a branch line portion derived from the junction block or the main line portion of the wire harness, the main line portion and the branch line portion of the wire harness are each insulated with a plurality of parallel conductors in a flat shape. It consists of a fixed flat harness, and the flat harness of the main line is at both ends. It is formed as a unit having a connection portion to the flat harness of the junction block or other main line portion, and the flat harness of the main line portion and the branch line portion are crossed and overlapped with each other, and the desired conductors are electrically connected by being permanently connected. It is characterized by that.

In the first invention shown in FIGS. 1 to 6, two junction blocks C ₁ , C ₂ or C ₁ ′,
C ₂ ′ are independently connected to the flat harness A.

On the other hand, in the second invention, one wiring harness is completed by connecting the two junction blocks to each other with a flat harness that is a main line portion, or by repeating this in sequence.

The configuration of the second invention will be described with reference to the drawings. In FIG. 7, a flat harness A ′, which is a trunk portion of a wire harness, has connection terminals 11 provided at both ends of a conductor 2 and an insulating substrate 1,1. ′ And a connector housing 12 are provided integrally therewith to form a connector portion 13 for connecting the main line portion, which is configured as a unit 14 having a predetermined length. Reference symbols E and F respectively denote an electronic circuit unit as a junction block and a fuse block. In this case, the conductor 2 forming the flat harness A'is composed of a power line connected to the vehicle-mounted power source and a signal line connected to the electronic circuit unit F, and these lines are used as a circuit common to each junction block. It The branch line portion B is the same as the above, and the description thereof is omitted.

[Work]

According to the second aspect of the invention, since the flat harness that is the main line portion can be unitized, the length and bending direction of the entire wire harness and the bending direction can be freely changed by the combination thereof. In addition, various junction blocks can be connected to each other directly or via a flat harness without using a conventional wire harness having a wire-converging shape.

EFFECTS OF THE INVENTION As described above, according to the present invention, the following effects can be obtained.

(1) Since the number of members for concentrating and fixing electric wires such as vinyl tape and clamps in the past is reduced, and the insulating substrate can be thinly formed into a sheet or the like, the weight of the wire harness as a whole is reduced.

(2) Since the joint part of the conventional electric wires can be processed by connecting the main line part and the branch line part, the number of man-hours for processing the electric wire is reduced.

(3) Since the joint by the bus bar in the junction block can be processed in the same manner as in (2), the number of terminals and the number of circuits in the block can be reduced, and the size and weight can be easily reduced.

(4) The trunk line and the branch line can be connected at any position depending on the shortest distance to the electrical equipment or the place of installation,
Circuit design becomes easy.

(5) Since the main line portion or the branch line portion and the junction block can be integrated with each other, the man-hours for assembling the conventional wire harness can be reduced and the space provided in the vehicle can be relaxed. Further, the circuit conductors in the junction block and the conductors of the main line portion and the branch line portion can be continuously formed without being cut off from each other, so that the electrical reliability is improved.

(6) Both the main line portion and the branch line portion that compose the wire harness have a flat and simple structure, which facilitates automation of production, and avoids the conventional wire bundle concentrating shape having a large diameter.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the first invention. 2A and 2B are an exploded perspective view (a) and an assembled perspective view (b) showing an enlarged branch line portion of the same. FIGS. 3a and 3b are wiring diagrams for the first invention and the conventional wire harness device. 4 (a) and 4 (b) are a schematic perspective view (a) showing another embodiment of the first aspect of the invention and a cutaway perspective view (b) of a main part. FIGS. 5a, 5b and 6 are explanatory views showing another embodiment of the method of connecting the main line portion and the branch line portion, respectively. FIG. 7 is a schematic perspective view showing an embodiment of the second invention. FIG. 8 is an explanatory diagram of a conventional example. A, A ′ …… Flat harness (as a trunk line), B, B ₁ ,
B ₂ …… Flat harness (as branch line), C ₁ , C ₂ ,
C ₁ ′, C ₂ ′ ... junction block, D ₁ , D ₂ ……… connection part, E …… electronic circuit unit, F …… fuse block, 1,1 ′, 3 …… insulation substrate, 2,2 ′, 4,4 ′ …… Conductor, 5 ...
... Round pin terminals, 5 '... Male terminals, 7,7 ₁ , 7 ₂ ...... Connector section, 8 ...... Insulation sheet, 13 ...... Connector section for main line section

Claims (2)

[Claims] 1. A plurality of junction blocks in which fuses, relays and other control components are housed are dispersedly arranged at appropriate locations in a vehicle, and a power line connected to an on-vehicle power source between the junction blocks and the junction block. A wire of an automobile that is connected by a main part of a wire harness including a signal line connected to a relay, and connects electrical components arranged at various places in the vehicle with a branch block part derived from the main part of the junction block or the wire harness. In the harness device, the main line portion and the branch line portion of the wire harness are configured by a flat harness in which a plurality of parallel conductors are flatly insulated and fixed, and the plurality of junction blocks are connected to the flat harness of the main line portion. With integrated connection with or without parts, A wire harness device for an automobile, characterized in that the flat harnesses of the main line portion and the branch line portion are crossed and overlapped with each other, and desired conductors are permanently connected to be electrically connected. 2. A plurality of junction blocks, in which fuses, relays and other control parts are housed, are dispersedly arranged at appropriate places in a vehicle, and a power line connected to an on-vehicle power source and the junction blocks are connected to each other. A wire of an automobile that is connected by a main part of a wire harness including a signal line connected to a relay, and connects electrical components arranged at various places in the vehicle with a branch block part derived from the main part of the junction block or the wire harness. In the harness device, the main line portion and the branch line portion of the wire harness are configured by a flat harness formed by insulatingly fixing a plurality of parallel conductors in a flat shape, and the flat harness of the main line portion has the junction block or the other at both ends. Connect the connection to the flat harness of the main line of A wire harness device for an automobile, characterized in that the flat harness of the main line portion and the branch line portion is formed as a unit having the above and intersects with each other, and the desired conductors are permanently connected to be electrically connected.