JPH01307108A - Flat wire harness uniting circuit body and electrical equipment - Google Patents

Abstract

PURPOSE:To unite a circuit body and electrical equipments by fixing the circuit body on which wiring patterns for the input/output of the electrical equipment on an insulating sheet and providing a hooking member for fixing the body on the attaching position. CONSTITUTION:A flat wire harness 4 is formed by fixing a circuit board 3' on which wiring patterns to an electrical equipment 2 is formed on an insulating sheet 3. Provided to a terminal fixing board 5 for fixing the terminal portion of the circuit body 3' is the terminals for connecting the circuit body 3' to other circuits such as a power source according to the necessity. Accordingly, the circuit body 3' and a plurality of electrical equipments are united to shorten the workhours, particular space for a wire harness is not needed and noise is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to wiring and wires for electrical components used in vehicles and the like.

[Conventional technology]

As a prior art, roof wire harnesses used in vehicles such as automobiles are shown in FIGS. 11 to 14. usually,
There is a room lamp on the ceiling inside the vehicle.

Electrical components such as spotlights and various switches are installed. FIG. 14 shows a roof wire harness 18 used for these wirings.

The roof wire harness 18 is made by bundling all the electric wires required for input/output of each electrical component installed in the ceiling of the vehicle, and providing a branch part for connecting to each electrical component from there. It was formed. A connector 20 connected to a power source or electrical equipment is attached to the end of each branch, and a plurality of clamps 19 for fixing the wire harness itself are provided in the middle. 1st
As shown in FIG. 1, each electrical component 2' is connected through a hole 6a in the molded ceiling 6 to a roof wire harness 18 that is wired from the lower part of the vehicle body 7 between the ceiling of the vehicle body and the molded ceiling 6.

FIG. 12 explains this installation process.

First, the roof wire harness 18 is attached to the vehicle body 7 using the clamp 19. Next, the molded ceiling 6 is fixed to the vehicle body 7. As shown in FIG. 13, the molded ceiling 6 has sheet-like skin materials 6e, 6 on both sides of a substrate 6d made of foam material.
e is attached, and a nonwoven fabric 6C is attached to the indoor side.

This molded ceiling 6 is provided with a mounting hole 6a for an electrical component 2' such as a room lamp. Roof wire harness 18
The connector 20 provided at the tip of the roof wire harness 18 is passed through the hole 6a in advance before the molded ceiling 6 is fixed. Next, electrical equipment 2 such as room lamps
The connector portion 2'a of the roof wire harness 18 is connected to the connector 20 of the roof wire harness 18. Finally, attach the electrical component 2' to the bolt 21.
and fix it to the molded ceiling 6 with the cover 2'b.

[Problems to be Solved by the Invention] However, this prior art has the following drawbacks.

■ There are many steps to complete the installation of electrical components and it takes time.

- The roof wire harness 18 may vibrate due to vibrations when the vehicle is running, and may hit the vehicle body or the molded ceiling, causing noise. Therefore, fixation using a large number of clamps 19 is required.

■ Roof wire harness 1 between vehicle 7 and molded ceiling 6
8 is required, which reduces the space inside the car.

The present invention was made in view of the above facts, and it is easy to install electrical components, does not generate noise due to vibration, and
The aim is to provide an integrated structure of the circuit body and electrical components, which does not require space for wiring harnesses.

[Means to solve the problem]

In order to achieve the above object, the present invention includes an electrical component, a circuit body in which a wiring pattern for input and output of the electrical component is formed,
The structure includes an insulating sheet that fixes the circuit body to form a flat wire harness, and a locking means that fixes the flat wire harness in a fixed position.

[Examples] Examples of the present invention will be described below with reference to the drawings. 1st
The figure shows one embodiment of the present invention, in which 1 is:
A flat wire harness that integrates a circuit body and electrical components [hereinafter referred to as (wire harness unit)]. ”.

Reference numeral 2 denotes a lamp unit used inside an automobile as an electrical component; one is a room lamp and the other is a spotlight.

3 is an insulating sheet, and 3' is a circuit body on which a wiring pattern to the electrical component 2 is formed, and this circuit body 3' is fixed to the insulating sheet 3 to form a flat wire harness 4.

5 is a terminal fixing board for fixing the terminal part of the circuit body 3'. The terminal fixing board 5 is provided with terminals for connecting the circuit body 3' to other circuits such as a power supply, as necessary.

6 is a molded ceiling provided on the ceiling of an automobile or the like as described above, and 6a is a hole in which the electrical component 2 is installed.

FIG. 2 shows an example in which the wire harness unit 1 according to the present invention is installed on the ceiling of a vehicle such as an automobile. Prior to the installation of the wire harness unit 1, a molded ceiling 6 is placed on the ceiling of the vehicle 7 in advance, and a garnish 6b is placed around the molded ceiling 6.
It is fixed by etc. Since the conventional wire harness 18 (see FIG. 14 described above) is not required, the gap between the vehicle 7 and the molded ceiling 6 can be made narrower than in the conventional case, and the interior of the vehicle becomes wider accordingly. To install the electrical component 2, insert it into the hole 6a,
Fix the terminal fixing board 5 with screws using the port 8, paste the insulating sheet 3 on which the circuit body 3' is fixed, and attach it to the molded ceiling 6.
Fix it with. As will be described later, the insulating sheet 3 is provided with a locking means such as a Velcro tape or a magnet, and is fixed to the molded ceiling 6 so as not to sag. Therefore, no noise is generated due to vibrations caused by the running of the vehicle.

A non-woven fabric 3c is stretched on the inside of the insulating sheet 3.
It matches the nonwoven fabric 6C stretched on the molded ceiling 6 and becomes part of the interior decoration of the car. Since the wiring harness unit l is easy to install as described above, by replacing it, the image of the inside of the vehicle can be easily changed. In addition, the hole 6a was previously connected to the wire harness connector, so it was essential for installation.
If a wire harness unit 1 as shown in FIG. 1 is used, it can be omitted.

The insulation sheet 3 can be made of any insulating material, even a flexible and thin plastic sheet.
On the contrary, it may be rigid and thick.

A circuit body 3' is fixed to an insulating sheet 3 to form a flat wire harness 4, and there are various methods for manufacturing this as exemplified below.

■ A wire method in which a desired circuit pattern is formed two-dimensionally in advance using a conductive member such as a rectangular conductor, and then bonded to an insulating sheet.

■ A subtractive method in which copper foil is bonded to the entire surface of an insulating sheet made of polyethylene or other plastic sheet, and then etched to form the desired circuit pattern.

■ Additive method similar to ■ where a circuit pattern is formed on the surface of an insulating sheet by plating or applying conductive paste.

■ Using a mold in which the desired circuit has been formed, the copper foil with adhesive is cut out, and at the same time it is placed on an insulating sheet, the conductor circuit is adhered by heating and pressure, and the unnecessary copper foil that is not bonded is removed. die stamping method to form a circuit body.

■ The busbar method involves cutting a conductive plate made of thin metal using a die press to form a circuit pattern, and then bonding it to an insulating sheet.

■ A set supply method in which strips or foil manufactured to a certain width and thickness are bonded to an insulating sheet under heat and pressure.

etc.

Note that the bonding between the circuit body 3' and the insulating sheet 3 is not limited to the heating and pressing method, and other methods such as ultrasonic welding can also be used.

3 and 4 are diagrams showing structural examples of the flat wire harness 4. FIG. In these figures, the circuit body 3' is formed by any one of the methods (1) to (4) above. In FIG. 3(a), a circuit body 3' is fixed to an insulating board 3b, and a skin 3a is pasted thereon. The skin 3a has the same shape as the wire harness unit 1,
The wire cover covers the entire nest unit l to protect the circuit body 3'. On the underside of the insulation board 3b, there is a non-woven fabric 3C.
is stretched. These skin 3a and insulation board 3b.

The insulating sheet 3 is formed of a nonwoven fabric 3c. Figure 3℃)
This is an embodiment in which a circuit body 3' is stretched on the underside of an insulating board 3b, and although not shown, a nonwoven fabric is stretched from the underside of the circuit body 3' to protect the circuit body 3'.

FIG. 4(a) is almost the same as FIG. 3(a), and the epidermis 3a
In this example, the board has the same shape as the insulating board 3b.

Figure 4(a) is the opposite of Figure 3(b), and the insulating board 3b
This is an example in which a circuit body 3' is pasted on the upper side to form a flat wire harness 4. The upper side of the circuit body 3' is exposed, but when installed in a vehicle or the like, it is covered and protected by a molded ceiling 6.

In FIG. 5, the insulation board 3b is connected to the wire harness unit 1.
This is an example in which it is formed as an integral piece with the same shape as . Although the circuit body 3' is fixed on the lower side, the same applies even if it is on the upper side. However, when the circuit body 3' is on the lower side, it is covered with a nonwoven fabric or the like so that the circuit body 3' is not exposed inside the vehicle, as described in the embodiment of FIG. 3.

FIG. 6 is similar to FIG. 5, but shows an embodiment in which the insulating board 3b is extended to a portion corresponding to the terminal fixing board 5 shown in FIG. Note that in this embodiment, the circuit body 3' is fixed to the insulating board 3b by a lug fitting 9 or the like. At the same time, this eyelet fitting 9 reaches the opposite side of the insulating board 3b, and also fixes the bus bar 2b forming the circuit inside the lamp unit 2. 2a is a lamp forming a lamp unit, and like 2c1, it is a cover. A groove 36 into which the circuit body 3' is fitted is formed as necessary in a portion of the insulating board 3b corresponding to the terminal fixing board 5, and forms a connection portion between the wire harness unit 1 and other circuits such as a power source. ing.

FIG. 7 shows an example of a locking means for attaching the insulating sheet 3 to the molded ceiling 6. FIG. 2A shows an example in which a magic tee 111 is used as the locking means, and the magic tape 11 is bonded to both the molded ceiling 6 and the insulating sheet 3. (b
) is an example in which a magnetic material 12 is applied to a molded ceiling 6, a plurality of magnets 13 are adhered to an insulating sheet 3, and the magnetic material is fixed by magnetic force. (C) is an example in which a plurality of recesses 15 are formed in the molded ceiling 6, protrusions 16 are provided in corresponding positions on the insulating sheet 3, and the two are fixed by fitting together.

The magnetic body 12 and the magnet 13 or the recess 15 and the protrusion 16 each constitute a locking means. According to these locking means, it is also possible to prevent the insulating sheet 3 from sagging after being fixed.

FIG. 8 is a diagram showing an example of the connection state between the circuit body 3' and the electrical component 2 in the wire harness unit 1. In these figures, 2d1 to 2da are connection terminals provided on the electrical component 2, which are elastic contact pieces formed by bending a thin metal plate. FIG. 8(a) shows a case where electrical components are embedded in the circuit body 3'. (b) shows the connection state when the insulating board 3b is integrated as in the embodiments of FIGS. 5 and 6.

(C) shows an elastic contact piece 2da inserted into the hole formed in the circuit body 3'.
It is used when the circuit body 3' is formed of a relatively thick plate such as a bus bar.

The embodiment shown in FIGS. 9 and 10 shows an example in which the wire harness unit 1 is extended to a part of the pillar of an automobile. An insulating sheet 3 is formed to fit part of the pillar, and a connector 17 is connected to the end. By doing this, there is no need for a wire harness to be routed to part of the pillar.
It becomes possible to further facilitate wiring work. 10th
The figure is a view of the embodiment of FIG. 9 from below. The insulating sheet 3 on the inside of the car is covered with a nonwoven fabric for the molded ceiling and a punched nonwoven fabric.

〔Effect of the invention〕

As described above, according to the present invention, since a flat wire harness is provided in which a circuit body and a plurality of electrical components are integrated, the following effects can be achieved.

■ By attaching the integrated flat wire harness to the molded ceiling, wiring work can be completed, greatly reducing work time.

■ No special space is required to route the wire harness.

■ Even if it is subjected to vibration after installation, it will not generate noise.

■ Integration makes installation and removal easier.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the integrated structure of the circuit body and electrical components of the present invention, and Fig. 2 shows an example in which the integrated structure of the circuit body and electrical components of the present invention is used in an automobile. Front view, Figures 3 and 4 (a)
, (b) is an exploded perspective view showing the combined state of the insulating sheet and the circuit body, Figure 5 is an exploded perspective view showing the combined state of the insulating sheet and the circuit body when the insulating sheet is integrated, and Figure 6 is the insulating sheet. An exploded perspective view of an embodiment in which the sheet also serves as a terminal fixing board. Figures 7(a) to (C) are configuration diagrams showing an embodiment of the locking means for the insulating sheet. Figure 8 is a circuit body and electrical components. Fig. 9 is an exploded perspective view showing the installation state of an example in which the insulating sheet is extended to part of the pillar, and Fig. 1O is a view of the example shown in Fig. 9 from below. A perspective view, FIG. 11 is a front view showing an example in which the conventional technology is used in an automobile, FIG. 12 is an exploded perspective view showing the installation state shown in FIG. 11, and FIG. 13 is a sectional view showing the configuration of a molded ceiling. FIG. 14 is a perspective view of a conventional wire harness. 1... Integrated flat wire harness, 2...
・Electrical equipment, 3... Insulation sheet, 3'... Circuit body, 4
...Flat wire harness. Patent applicant: Yazaki Sogyo Co., Ltd. Figure 3 Figure 4 Figure 1o Figure 11 Tuna 13 Figure 60 Figure 14

Claims (1)

[Claims] An electrical component, a circuit body on which a wiring pattern for inputting and outputting the electrical component is formed, an insulating sheet that fixes the circuit body to form a flat wire harness, and a retainer that fixes the flat wire harness in a mounting position. A flat wire harness that integrates a circuit body and electrical components, characterized by comprising a stop means.