JPS6127970B2 - - Google Patents

Description

[Detailed Description of the Invention] Many electrical parts are used in electrical equipment, automobiles, etc., and in order to connect these parts, many branch wires are branched from the main line and extend in a tree shape, so-called harness wires. It is used.

The tape winding operation performed to bundle the harness wires and provide reinforcing coating is a cause of high manufacturing costs.

To solve this drawback, for example, US Patent No.
No. 3517702, there is a vertically divided cylinder structure with a so-called zipper on the edge, but since the wire bundle is dendritic, the diameter of the main wire bundle changes greatly, so there is wasted space in the thin part. There were some possible drawbacks.

In this application, vertical wrinkles are provided on the obi part, so
In the thick part of the trunk, the wrinkles are spread out in the circumferential direction of the wire bundle, making it easy to adapt to variations in the diameter of the wire bundle, and since the direction of the wrinkles coincides with the longitudinal direction of the belt, the tube forming body is made of thermoplastic resin, etc. It is also extremely easy to manufacture by profile extrusion.

Furthermore, when taking out the branch line to the outside of the tube forming body, it is possible to fit the protruding line and the groove after passing it through the notch cut out by cutting out one of the protruding lines or grooves, that is, the fitting part. This is extremely convenient as it allows wrapping work to be carried out with electrical parts such as connectors attached to the tip of the branch line.

Examples of the present application will be described below, but the present application is not limited only to the examples.

FIG. 1 shows the tube-forming body 6 shown in FIG. 2 unfolded, and shows a band 3 having vertical wrinkles 2 extending in the longitudinal direction in the center and an ampulla provided along one edge of this band. It is composed of a protruding strip 4 and a groove provided along the other edge.

Further, to explain this band 3 in detail, as long as the shape of the vertical wrinkles 2 is a wave-like shape that can be freely expanded and contracted in the width direction of the band, the periodic pitch can be adjusted as appropriate according to the above-mentioned fluctuation rate of the trunk diameter. Selected.

Normally, the periodic shape is preferably a cross section in which semicircles are combined in a staggered manner, and preferably 15 to 30 weeks, preferably 25 weeks, in the direction of the band width.

That is, as will be described later, the natural diameter of the cylinder formed by the fitting operation (from the center of the semicircular wave to the center) is 25 mm, and the radius of the semicircular wave is 1.
mm, and the number of waves is 19.5, it is possible to cover a harness wire with a trunk wire with a maximum diameter of approximately 38 mm.

Next, the cross-sectional shapes of the protruding strips 4 and the grooves 5 need only have a structure that prevents them from coming apart due to the tension generated in the width direction of the band 3 when the wire bundle to be wrapped is bent. Although various conventionally known shapes are applicable, the one shown in the drawing is preferable because it has appropriate waterproof and dustproof properties at the fitting portion and facilitates the fitting operation.

That is, as shown in FIG. 2, when fitting the missing end 10 provided on the protrusion 4 into the bay 11 of the groove 5, the tightening protrusion 13 of the fitting jig 12 engages with the guide groove. 14 are preferably provided on the back side of the lost butt 10 and the bay 11, respectively.

It is also possible to provide a hole 15 in advance in the band for passing the branch wire 8 branching from the dry wire 7 of the wire bundle 1 shown in FIG. 15, it is difficult to pass the branch wire through the notch 9 by cutting out a part of the fitting part such as the groove 5, as shown in FIG. is preferred.

Furthermore, the purpose can be achieved by connecting two tube forming bodies as shown in Fig. 3 without particularly manufacturing a large-diameter tube forming body, so it is extremely suitable for manufacturing harnesses. Useful.

As described above in detail with respect to the embodiments of the present application, in the wire assembly of the present application, the disadvantage that the wire bundle is tightly bundled and difficult to bend due to conventional taping is solved, and the main wire part of the small end is formed into a tube. There is no unsightly appearance such as the formation body sticking together,
It can be applied to wire bundles of various diameters.

[Brief explanation of the drawing]

The figures are all for explaining the embodiment of the present application, and FIG. 1 is a perspective view of a developed tube forming body, and FIG. 2 is a perspective view illustrating the position where the tube forming body of FIG. 1 is wrapped around an electric wire bundle. , FIG. 3 is a perspective view illustrating another usage situation, and the reference numerals indicate the following. 1... Electric wire bundle, 2... Vertical wrinkles, 3... Band, 4...
Projection strip, 5... Groove, 6... Cylindrical body, 7... Main line, 8... Branch line, 9... Notch, 10... Missing end, 11... Bay, 12... Fitting jig , 13... tightening protrusion, 14... guide groove, 15... hole.

Claims (1)

[Scope of Claims] 1. A band 3 having longitudinal wrinkles 2 extending in the longitudinal direction of the bundle of wires 1 to be wrapped, a large protrusion 4 extending along one edge, and a protrusion extending along the other edge. An electric wire assembly characterized in that a cylindrical body having a groove 5 into which the strip fits is wrapped around the wire bundle, and the protruding strip and the groove are fitted. 2. The electric wire assembly according to claim 1, wherein a branch wire 8 branched from the main line 7 of the electric wire bundle is inserted through a notch 9 of the protrusion or groove.