DE7422135U - Ribbon line with branch lines - Google Patents

Description

concerning
Tape & iting with branch lines

The invention relates to a ribbon cable in which a plurality of electrical conductors arranged next to one another in one electrically insulating plastic tape is embedded, with at least one branch line at the end of at least one with a conductor of the ribbon conductor electrically connected conductor is exposed for contacting.

The invention relates in particular to flat conductor ribbon cables, where conductors with a flat cross-section are used.

In a known ribbon cable of the type described the branch lines are also designed as ribbon lines. You are in the way of the continuous leased line connected that in the area of the junction, the insulation of the trunk line has been removed and the exposed ends Head of the branch line, each with a head of the trunk line, for example by soldering or spot welding are electrically connected and the resulting junction is isolated again. At the end of the branch line there are cLi'e conductors exposed as required, so that their contact is made there is possible.

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The production of such a ribbon line with branch lines is relatively expensive due to the large number of operations to be carried out. Since the connections between the conductors of the trunk line and the conductors of the branch line must be made carefully so that there are no unequal contact resistances

If mutual contact exists, trained specialists must be deployed here.

The invention is based on the object of developing a strip line of the type described at the beginning with one or more branch lines in such a way that it can be produced economically and is particularly reliable in operation.

This object is achieved according to the invention in that the üandleitung to form the branch line to a U-loop is placed with legs lying one on top of the other, and at least one conductor in the area of the outside of the curvature of the U-loop exposed for contacting.

The electrical connection of the conductors of the branch line to the conductors of the dedicated line, which has been customary up to now, is therefore not required. Rather, the ribbon line according to the invention, including the branch lines, is in one piece, with the trunk line being routed twice only in the area of the branch lines. At the outer curvature of the U-shaped loop of the ribbon line, the conductors are exposed on the outside, so that at this point the conductors of the trunk line serve as contacting parts of the branch line.

Between the legs of the U-loop formed from the ribbon line in the area of the branch line, a film can be arranged which mediates the adhesion of the legs to one another. If this film is made of thermoplastic material, the sections lying in the area of the legs are glued of the plastic tape by heating the branch line above the softening point of the film · The area of the inversion of the U-loop exposed, self-contained ends of the conductors are mechanically effectively relieved.

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In a preferred embodiment of the ribbon line this is Plastic tape is completely removed in the area of the U-loop and the conductors are pushed in around this area Insulator core guided with a U-shaped profile. This creates a mechanically very stable arrangement of the Head of the branch line reached in the form of the male part of a plug connection, on which the conductors next to each other arranged to be exposed on both sides for their contacting. The male part of the plug connection produced in this way can simply be inserted into a corresponding female part of the plug connection.

By suitable selection of the material from which the plastic tape is made, it can be achieved that the plastic tape of U-loop adheres directly to one another in the area of the branch line, so that the above-mentioned foils are superfluous. These The embodiment of the ribbon cable is special in its manufacture simple. For a branch line, the tape is simply laid in a U-loop, the plastic tape is used heated in the area of the U-loop and thus sticky and adheres to each other. At the ends of the branch line, the through the plastic tape given insulation, for example by milling, removed so that the outsides of the conductors are exposed.

The strip line according to the invention is not only characterized by its ease of manufacture and reliable power supply to the ends of the branch lines; the branch lines can also be subjected to high mechanical loads without the danger there is any change in contact resistance, since the strip line is formed in one piece as a whole. By Soldering or a similar type of connection of the branch lines with the trunk line occurring transition resistances eliminated. The branch lines can be of any desired length and at any desired mutual spacing from one another be created.

The application areas of the company are. s »r through the Material properties of the plastic tape besehräakt uad thus range from the use to the hardening of stationary

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Circuits up to the use in mechanically highly stressed Devices such as electronic components in vehicles or missiles.

The invention is illustrated below with the aid of examples in schematic representations and with advantageous details Further explained.

Show it:

Fig. 1 is a perspective view of a ribbon line,

FIG. 2 shows a vertical section through the ribbon line according to FIG. 1 in a plane through a conductor,

3 shows a section through a ribbon line along the line III-III in FIG. 1 with a modified one Embodiment of an insulator core.

In the illustrated embodiment, three flat conductors 1, for example made of Kupier, in a plastic band 3, for example made of polyethylene, completely embedded and combined into a ribbon cable.

To form a branch line designated as a whole with 5 the ribbon cable is laid along an intermediate piece to form an O-loop, the two legs 7, 9 of which are superimposed. In the area 11 of the U-loop curve, the plastic tape 3 is stripped so that the conductor 1 is made of the plastic tape 3 of one leg of the U-loop exit and after reversing into the plastic band of the other leg of the Re-enter the U-loop. ' In this area 11 at the closed end of the U-loop, the conductors 1 are around an insulator core 13 led around with a U-shaped profile. Between the plastic strips 3 of the two legs of the U of the branch line 5 is a film 15, for example made of thermoplastic material, arranged over which the two plastic strips with each other are connected. The thickness of the Isclatorkems 15 at the points.

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where the lanyards 1 rest on it, is the same Sum of the thickness of the film 15 and twice the thickness between a conductor 1 and the outside of the plastic tape remaining plastic layer. This ensures that each head 1 without a kink in the area of the curvature U-loop emerges from the plastic band 3 of one leg 7 and into the plastic band 3 of the other leg 9 again entry.

The insulator core 13 can, as shown in FIG. 3, with recesses be provided, in which the conductors 1 are received, so that the conductors 1 are safely guided and mechanically protected. The conductors 1 can be refined in their exposed areas, for example gold-coated, so that they do not oxidize and the service life of their contact surfaces is increased.

To produce a branch line 5 shown in the figures, the plastic strip 3 of the strip line is first removed along a distance which corresponds to the length of the conductor 1 exposed in the area 11 of the curve of the U-loop. This can be done in a conventional manner, for example by milling. The ribbon cable is then laid to the U-loop; The film 15 made of thermoplastic material is arranged between the two legs of the U-loop and the insulator core 13j, which can also be formed in one piece with the KLie 15, is arranged in the area of the exposed conductor 1. The two legs 7, 9 of the U-loop are pressed against one another and, depending on the type of film 15, heated so that they adhere to one another. The connection created for contacting the branch line 5 with the conductors 1 passed over the insulator core 13 and exposed on their outsides is very stable and directly forms the male part of a plug connection.

/Expectations;

Claims (3)

Expectations Λ.) Ribbon line, in which a plurality of juxtaposed electrical conductors are embedded in an electrically insulating plastic strip, with at least one branch line, at the end of which at least one conductor electrically connected to a conductor of the 'ribbon line is exposed for contacting, characterized in that the strip line (1, 3) is laid to form the branch line (5) to form a U-loop with legs (7, 9) lying one above the other, and at least one conductor (1) in the area {11) of the outside of the curve of the U-loop for the Contacting is exposed. 2. Banüleitung according to claim 1, characterized in that between the im In the area of the branch line (5) formed legs (7, 9) of the U-loop, a film (15) is arranged which provides the adhesion the legs (7, 9) conveyed to one another. 3. Ribbon line according to claim 1 or 2, characterized in that g e k e η η · shows that the plastic band (3) in the area (11) of the U-loop is completely removed and the Conductor (1) in this area (11) around an inserted insulator core (13) are guided with a U-shaped profile. 67V t · * λ λ · «fc ··