JPH0612149B2 - Flat wire harness mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a device for mounting a flat wire harness, which is a flat wire bundle of a plurality of electric wires or conductors, on a vehicle body.

[Conventional technology and problems]

As shown in FIGS. 5 and 6, the flat wire harness has a configuration in which a plurality of parallel insulated coated electric wires a are bundled in a flat shape by an appropriate bonding means, and the flat wire harness is mounted on the vehicle body. Mounting unit b formed by projecting a clip d on a plate-like body c on one side of W
Is fixed with a tape e, and the clip d is fitted into a hole of the vehicle body.

With such an attachment method, it takes time to wind the tape manually, the productivity is low, the fixing force of the attachment unit is weakened due to the deterioration of the tape over time, and the wire harness moves due to the vibration of the car. Installation,
There was a defect that the fixing action was not achieved.

An object of the present invention is to solve the above-mentioned problems, and to provide a mounting device which has a strong fixing force of a mounting unit to a flat wire harness and is stable for a long period of time, and whose fixing work can be easily automated.

Configuration of the Invention [Means for Solving the Problems] Referring to the drawings, a flat wire harness mounting device according to the present invention, as shown in FIG. 1 to FIG. The flat wire harness W is provided between the mounting plate 7 on which the clip 8 to be locked to the stand is provided and the plate-shaped locking base 4 provided with the means 5 for engaging with the mounting plate 7.
Bonding layer 3 made of the same synthetic resin as the insulating coating layer 2
A laminate sheet 3 having a and a protective layer 3b made of a synthetic resin having heat resistance higher than that and having a joint margin 3a 'which is slightly larger than the plate-like locking base 4 is sandwiched. The mounting unit A is configured, and the mounting unit A is fixed on the flat wire harness W by fixing the bonding margin 3a 'of the bonding layer 3a on the laminate sheet 3 and the insulating coating layer 2 of the flat wire harness W. Is characterized by.

As shown in FIGS. 1 and 2, the wire harness W
Is a plurality of electric wires 1 arranged in parallel, which are integrally flattened by a synthetic resin insulating coating layer 2. The electric wire 1 is an ordinary covered electric wire in which the circumference of the conductor 1a is covered with a polyvinyl chloride insulator 1b, and the insulating covering layer 2 is also made of polyvinyl chloride resin or an adhesive or an adhesive sheet to integrally fuse the two. I'm wearing it.

The laminate sheet 3 is made of a synthetic resin such as polyester or polyamide resin (for example, nylon), which has a relatively high thermal and mechanical strength, on the bonding layer 3a made of polyvinyl chloride which is the same material as the insulating coating layer 2. It is formed by stacking layers 3b, and has a hole 3c in the center and slots 3d on both sides through which the locking portions 5 pass. This laminate sheet 3 is slightly larger than the plate-like locking base portion 4, and the periphery of the joining layer 3a made of polyvinyl chloride is formed as a joining margin 3a '.

The plate-like locking base 4 is made of a synthetic resin having a relatively high strength such as polyacetal or 6-nylon. The plate-like engaging portion 4 has a long engaging portion 5 formed in a hook shape in cross section at both ends, and a protrusion 6 for positioning with respect to the clip 8 is provided in the central portion.

The mounting plate 7 is made of the same synthetic resin material as the plate-like locking base 4 and is formed to have substantially the same dimensions. The clip 8 erected on the mounting plate 7 has a shoulder 8d facing downward on both sides of the upper end of a prismatic (or columnar) main body 8a, which engages with holes (not shown) in the vehicle body or panel. A stop claw 8b is provided and a fitting recess 8c for the protrusion 6 is provided at the lower end.
Is provided.

[Work]

As shown in FIGS. 3A and 3B, the holes 3 of the laminate sheet 3
The protrusion 6 and the locking portion 5 of the plate-shaped locking base portion 4 are respectively passed through the c and the long hole 3d from the lower surface (the polyvinyl chloride layer 3a side),
When the fitting recess 8c is aligned with the protrusion 6 and the mounting plate 7 is pressed, both ends of the mounting plate 7 are fitted and locked to the hook-shaped locking portions 5. As a result, the mounting unit A in which the laminated sheet 3 is sandwiched between the plate-shaped locking base 4 and the mounting plate 7 is assembled.

When this unit is placed at a predetermined position on the insulating coating layer 2 of the wire harness W and the laminate sheet 3 is heated, the bonding margin 3a 'of the polyvinyl chloride bonding layer 3a is integrated with the insulating coating layer 2 of the same material. Fused to. The laminated sheet 3 is deformed or embrittled by the heat-melting treatment because the polyvinyl chloride bonding layer 3a is protected and strengthened by another synthetic resin protective layer 3b having higher heat resistance. There is no.

〔Example〕

1 to 3 show a typical example of the present invention, in which a hook-shaped locking portion 5 is used as a locking means between the plate-shaped locking base 4 and the mounting plate 7, and the plate-shaped locking base 4 is provided. Although the example provided on the side has been described, it will be easily understood that this may be provided on the mounting plate 7 side. The hook-shaped locking portion 5 may be formed as a drawer-type insertion member having a U-shaped cross section, and the mounting plate 7 (or the plate-shaped locking base portion 4) may be slid and fitted. In this case, The protrusion 6 is omitted.

Also, an example in which the insulator 1b and the insulating coating layer 2 are formed of polyvinyl chloride has been described, but when these are polyethylene or crosslinked polyethylene, the same material as that for the joining layer 3a of the laminate sheet 3 is also used. . Since the insulating coating layer 2 and the bonding layer 3a are made of the same material, they can be bonded easily and firmly with an adhesive.

FIG. 4 shows another aspect of the flat wire harness. Instead of the covered electric wire, a plurality of narrow strip-shaped conductors (strips) 9 are arranged in parallel to form an insulating cover layer 2'of polyvinyl chloride or the like. It is a flat and integrally molded product.

Unlike the case of using the ordinary covered electric wire 1 shown in FIG. 1, this flat wire harness W'has a conductor 9 group which is insulated and fixed in parallel in a flat shape from the beginning, so that the mounting unit A is directly fused. Can be fixed.

EFFECTS OF THE INVENTION As described above, according to the present invention, the assembly of the mounting unit itself can be made extremely simple because the mounting plate and the plate-like locking base are simply engaged with the laminate sheet interposed therebetween,
This mounting unit can be easily and firmly attached to the flat wire harness by known means such as heat fusion, and the flat wire harness can be reliably fixed for many years to a vehicle body or the like where vibrations are severe. . In addition, the work of fixing the mounting unit to the flat wire harness can be easily automated in place of the conventional manpower, which is useful for improving productivity.

[Brief description of drawings]

FIG. 1 is a perspective view showing a typical example of the device of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIGS. 3A and 3B show the assembly process of the mounting unit in FIG. 4 is a perspective view showing another aspect of the flat wire harness, FIG. 5 is a perspective view of a conventional example, and FIG. 6 is a side view of FIG. A: Mounting unit, W, W '... Flat wire harness, 2 ... Insulation coating layer, 3 ... Laminate sheet,
3a ... bonding layer, 3a '... bonding margin, 3b ... protective layer,
4 ... Plate-shaped locking base, 5 ... Locking part, 7 ... Mounting plate, 8
……clip.

Claims (1)

[Claims] 1. An insulation of a flat wire harness between a mounting plate provided with a clip standing upright in a hole of a vehicle body, a panel or the like and a plate-shaped locking base provided with means for engaging with the mounting plate. A laminate having a joining layer made of a synthetic resin of the same material as that of the coating layer and a synthetic resin protective layer having higher heat resistance than the covering layer, and forming a joining margin by making it one size larger than the plate-like locking base portion. A sheet is sandwiched to form an attachment unit, and the attachment unit is fixed on the flat wire harness by fixing the joining margin of the joining layer in the laminate sheet and the insulating coating layer of the flat wire harness. Flat wire harness attachment device.