JP2647641B2 - Automotive wire harness equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness device for an automobile, which can simplify the wiring harness and can easily automate the wiring and manufacturing in a limited space inside the vehicle.

[0002]

2. Description of the Related Art As shown in FIG. 6, a conventional wire harness has a trunk line section a in which a large number of electric wires are bundled by tape winding.
Has a structure in which a plurality of branch lines b are derived from the junction block d which is distributed and arranged at appropriate places in the vehicle.
And electrical components at various places via connectors c.

[0003] There are three methods for deriving the branch line portion b: a method of simply bending the electric wire of the trunk line portion a, a method of connecting to the intermediate portion of the electric wire by using a joint terminal, and a method of using the junction block. is there. Of these methods, the method using the joint terminal requires a number of steps such as peeling of the middle portion of the electric wire, crimping of the terminal, and winding of the crimped portion with a tape. Therefore, automation is difficult, and enlargement of the wire harness is inevitable.

[0004] On the other hand, a junction block generally includes a plurality of fuses, relays and the like, and a branch circuit formed by a bus bar. Therefore, as disclosed in, for example, Japanese Patent Publication No. 57-34132, junction blocks are disposed at appropriate locations in the engine room of an automobile, near an instrument panel, or the like, and these blocks are interconnected by a trunk line. If connection and wiring for various electric components are performed through each block, the number of branch lines derived from the trunk line 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 wires making a U-turn to the trunk increases with the increase in the number of terminals and the number of circuits in the block, so that the effect of suppressing the enlargement of the trunk is small. .

[0005]

Since the number of on-vehicle electrical components has been increasing more and more in recent years, enlargement should be avoided 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. It requires considerable space for installation. In addition, it is also difficult to automate the manufacture of the wire harness because the junction block cannot absorb all the branch lines to the trunk line.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wire harness device which solves the above problems, is optimal for preventing enlargement, and can be easily arranged in a small space and mass-produced by automation.

[0007]

In order to achieve the above-mentioned object, the present invention is to disperse and arrange a plurality of junction blocks containing fuses, relays and other control parts at appropriate places in a vehicle, These junction blocks are connected to each other by a trunk portion of a wire harness including a power line connected to a vehicle-mounted power supply and a signal line connected to the relay, and electrical components arranged in various places in the vehicle are connected to the junction block or the wire harness. In a wire harness device for an automobile connected to a branch line derived from a trunk line of a vehicle, the trunk line and the branch line of the wire harness are each configured by a flat harness in which a plurality of parallel conductors are insulated and fixed in a flat shape. The flat harness of the trunk line is connected to the junction Is formed as a unit with a connection to click or other main line of the flat wire harness,
The flat harnesses of the trunk line portion and the branch line portion are crossed and overlapped with each other, and are electrically connected by permanently connecting desired conductors.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The above construction will be described with reference to the drawings. In FIG. 1, A 'is a flat harness which forms a trunk portion of a wire harness, B is a flat harness which also forms a branch line portion, and E and F. Denotes an electronic circuit unit as a junction block and a fuse block.

A flat harness A 'constituting a trunk line portion
Is a method in which a plurality of parallel conductors 2 are arranged on an insulating substrate 1 made of synthetic resin, and another insulating substrate (or insulating sheet)
It has a structure covered with 1 '. This flat harness A '
Can be freely formed by providing a right-angled bent portion as shown in the drawing or by bending it obliquely according to the installation route in the vehicle. The conductors 2 do not necessarily have to have the same standard capacity. For example, the conductors 2 are connected to an in-vehicle power supply (battery or alternator) to combine various standards such as a power line for energizing a load and a signal line for relay operation. Can be arranged.

The flat harness B constituting the branch line section is
As shown in FIGS. 2A and 2B, the conductor 4 is formed in a plurality of parallel grooves 3a provided in the insulating substrate 3. The flat harness B has a connector portion 7 composed of a round pin terminal 5 as a terminal portion coupled to one end of the conductor 4 and a connector housing 6 formed integrally 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 an end of the insulating substrate 3, and fitting and fixing a frame member 6c to the wall member 6b.

The connection between the flat harness A 'and the flat harness B is performed as follows. As shown in FIG. 1, the conductor 4 is crossed over the conductor 2 via the insulating sheet 8 and overlapped. A plurality of holes 8a and 3b necessary for connection are provided in the insulating sheet 8 and the insulating substrate 3, respectively, and the conductors 2 and 4 of the flat harnesses A 'and B are spot-welded and soldered through these holes 3b and 8a. Permanent connection using known means such as attachment.

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 a connector housing 12 provided integrally with the insulating substrates 1 and 1'. The unit 13 is formed as a unit 14 having a predetermined length. In this case, the conductor 2 constituting the flat harness A 'is composed of a power line connected to the vehicle-mounted power supply and a signal line connected to the electronic circuit unit F, and these lines are used as a circuit common to each junction block. You.

Since the flat harness A 'is a thin flat plate, the flat harness A' can be easily disposed in a narrow space, for example, on the back side of an instrument panel (instrument panel) of an automobile, and can be disposed along a floor in an automobile. They take up little space. Further, the flat harness A 'has a simple structure in which a plurality of conductors 2 are juxtaposed on the insulating substrate 1, and the branch line portion B can be led out at any position, and each branch line portion is unitized. As a whole, automation of production can be easily achieved.

Further, the branch connection to the flat harness A ', which is the main line, that is, the branch line can be easily led out, so that the following operation occurs. FIG. 3 (a),
(B) is a comparison of the circuits according to the present invention and the conventional wire harness device, respectively.

In FIG. 3B showing a conventional example, a portion x
Are branch bus bars e ₁ , e in the junction block d.
₂ shows a state in which the electric wires f ₁ and f ₂ are jointed to prevent an increase in the diameter of the trunk line portion a due to the joint between the electric wires. As a result, the number of circuits and the number of connection terminals in the junction block increase, and the number of electric wires in the trunk line section a increases. The electric wires f ₁ and f ₂ shown by bold lines simply represent such a state.

According to the present invention, as is apparent from FIG. 3A, it is not necessary to provide branch bus bars intensively in the junction blocks E and F, and the joint is formed by connecting the flat harnesses A 'and B as described above. Done. Similarly, the electronic components included in the junction block, for example, joints not related to the fuse g or the relay h may be absorbed by the flat harnesses A 'and B outside the block.

As a result, the number of electric wires (conductors) of the flat harness A ', which is a trunk line, is reduced, and the electric wires f ₁ ,
long-distance pull turn, such as the f ₂ is no longer needed, it can be connected to a variety of electrical equipment in the shortest distance, help to a reduction in the weight of the wire harness itself. Further, since the junction block has almost no branch busbar, the number of circuits and the number of terminals are greatly reduced, and the internal structure is simplified and the weight and size are reduced. Thick line conductor 2 ₀ in FIG. 3a, 4 _0, respectively corresponding to the wire f _1, f _2.

FIGS. 4A, 4B and 5 show another connection method of the flat harness constituting the trunk line and the branch line, respectively. 4a and 4b, flat harness (main line)
The conductor 2 'of A' is formed in a narrow band shape by punching a sheet metal or the like, and a slot 10 is formed from a side edge of the conductor 2 '.
The pressure contact terminal 10 having a is formed uprightly. The press 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 press contact terminals 1 are attached to the insulating sheet 8.
If a long hole 8b through which 0 passes is provided, the flat harness B
The conductor 4 on the side can be press-fitted into the slot 10a and jointed easily. FIG. 5 shows that an insulating substrate 1 supporting a conductor 2 on the side of the flat harness A 'is provided with a plurality of grooves 1a for arranging conductors and holes 1b for connection, while the conductor 4' on the side of the flat harness B is narrowed. An example is shown in which a conductor 4 'is provided with a press contact terminal 10 having a slot 10a in the same manner as described above.

[0020]

As described above, according to the present invention, the following effects can be obtained. (1) The number of members for converging and fixing electric wires such as vinyl tapes and clamps in the related art is reduced, and the insulating substrate can be formed in a thin sheet shape or the like, so that the weight of the entire wire harness is reduced. (2) Since the joint portion of the conventional electric wires can be processed by connecting the trunk line portion and the branch line portion, the man-hour 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 are reduced, and it is easy to reduce the size and weight. (4) The connection between the trunk line and the branch line can be made at any position depending on the shortest distance to the electrical equipment or the wiring location,
Circuit design becomes easy. (5) Since the flat harness, which is the main line, can be made into a unit, the length, the bending direction, and the like of the entire wire harness can be freely changed by the combination. Also, various junction blocks can be connected to each other directly or via a flat harness without using a conventional wire harness having a bundle of electric wires. (6) Both the trunk section and the branch section constituting the wire harness have a flat and simple structure, so that the production can be easily automated and the diameter increase due to the conventional wire bundle shape can be avoided.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a wire harness according to the present invention.

2A is an exploded perspective view and FIG. 2B is an exploded perspective view showing the branch line portion in the same manner.

3A is an explanatory diagram of wiring of the present invention, and FIG. 3B is an explanatory diagram of wiring of a conventional wire harness device.

FIGS. 4A and 4B are perspective views showing another connection structure of a trunk line portion and a branch line portion.

FIG. 5 is a perspective view showing still another connection structure between a trunk line portion and a branch line portion.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 A 'Flat harness (as trunk line) B Flat harness (as branch line) E, F Junction block 13 Connection of trunk line 14 Unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication H01R 31/06 H01R 31/06 P H02G 3/28 H02G 3/28 D

Claims (1)

(57) [Claims] A plurality of junction blocks accommodating fuses, relays, and other control parts are dispersed and arranged at appropriate places in a vehicle, and a power line connected to a vehicle-mounted power supply is provided between these junction blocks. A car wire connected by a trunk line of a wire harness including a signal line connected to a relay and connected to a branch line portion derived from the junction block or the trunk line portion of the wire harness by connecting electrical components disposed in various places in the vehicle. In the harness device, the trunk portion and the branch line portion of the wire harness are each configured by a flat harness in which a plurality of parallel conductors are insulated and fixed in a flat shape, and the flat harness of the trunk portion has the junction block or other at both ends. Connection to the flat harness of the main line Is formed as a unit with, the flat harness of the main line and the branch portion is superimposed with cross each other, the desired automobile wire harness apparatus characterized by were passed by permanent connection between conductors.