DE2527213A1 - IMPROVED TAPE-SHAPED LADDER - Google Patents

Description

"Improved Ribbon Ladder."

Applicant: CAYIS Cavetti Isolati SpA

in Turin, Italy.

The invention "relates to an improved belt-shaped, on-one flexible plastic laminate mounted conductor, which is provided with holes suitable to make its connection with other similarly constructed conductors.

It is well known that there are plastic laminates made of thin strips conductive material existing circuit elements can be mounted. -In practical use, such plastic laminates are two- or overlaid on several levels and the electrical connection between The various circuit elements are connected via special connectors carried out.

The named connectors can be made of Oeeen, rivets and other similar things A putty that is forced into holes that are attached to the appropriate Poles in the thickness of the ladder and bearing laminates attached Bind. The electrical continuity between the various circuit elements is due to the contact between the same connecting organs ttnd insured the edges of the above holes. However, it should be emphasized that the electrical resistance of such connections increases progressively as a result of the defor-

Exercises that occur between the parts in contact are the result of the

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thermal changes and / or aging occur. The mentioned functional Kachteil is, however, by the invention " remedied according to improved, functionally structurally built ladder. '

Said tape-like as one on a flexible plastic laminate existing bearing mounted S'bromkreiselement has imaginary ladder in fact, special connection holes are associated with the stability of the electrical connection between a multitude of one another Can insure conductors mounted on as many base laminates.

The strip-shaped conductor according to the invention is printed out more precisely Contact elements provided on the weld metal, which are attached to special holes are formed, which is at an appropriate position in the thickness of the conductor are attached themselves.

Such material generally forms a mushroom-shaped structure the one in the corner of the conductor and the associated storage laminate Stalk.

Axial eit of the aforementioned mushroom-shaped structure is then a Through hole attached, which is a cylindrical connecting element can accommodate.

Through such hatred, the contact area extends to the lower one Flee the bearing laminate, making electrical connections to the the ladder below is ensured by simply pressing.

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-These and other features of a functional and constructive nature of the inventive improved ribbon-shaped, mounted on a flexible bearing, provided with connecting holes - conductor as well as a preferred, Execution methods, which are not to be understood in a limiting sense, can be found in the following detailed The description can be clearly seen on the basis of the various figures reproduced in the accompanying drawing. It demonstrate:

- Fig. 1 shows the end part of a band-shaped according to the invention Conductor perforated with the bearing laminate;

- Fig. 2 shows the section through a multiple conductor superimposed Laminate during the laying of weld metal at the aforementioned holes;

- Fig. 3 shows the end portion of said conductor with the hole filled with weld metal ·;

- Fig. 4 the same final portion as above, after the Weld metal block has been pierced; and

- Fig. 5 shows the connection between a packet of tape-shaped Ladder supported on a flexible plastic laminate. Referring now in particular to those in the various Figures of the accompanying drawings containing reference numerals the strip-shaped conductor 10 according to the invention has its iindportion designed in a ring shape, so that they are a

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Hole 11 delimited by the thickness of the bearing laminate is appropriate.

Around the conductor itself with suitable electrical connection elements To be specially equipped, the surrounding laminate is provided with a two-core masking 12 and through layered material thermally insulated, which is suitable, in order to protect the plastic base 14 · Welding metal is applied to the holes 11 by means of suitable processes laid to form mushroom-shaped passage structures, an expediently widened head 15 and a stem exhibit.

A hole 17 is made along the axis of the latter, which can accommodate a rivet or other similar organ (Fig. 5) "which or" which is suitable for a package of laminates to clamp the thus constructed ribbon-shaped conductors.

The peripheral portion of the heads 15 is also preferred insulated by means of a layer of protective material 18.

It should also be pointed out that the electrical connection between the various superimposed conductors is ensured by the press contact between the edges of the heads 15 and the annular ends of the stems 16, which are intimately connected to the conductors themselves.A preferred execution method is metal on the laminate by Vellensohweissen after pre-cleaning and

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Treatment with flux of the circuit elements laid.

The operating temperature is kept between 2 * f5 ° and 255 ⁰ C by ensuring that the feed speed, the inclination and the shape of the shafts are adapted to the specific structure of the circuits.

For example, using a .003 "polyester based laminate with 3 oz copper tape, one picks up 5/32" holes, with weld metal over a thickness of approx.

0.020 "so that the mushroom-shaped head is only slightly the same * protrudes from the surface of the laminate · The choice of the one realizing the compression coupling The rivet depends on the intended use for the circuit elements.

Basically, the aforementioned rivet should be used for a current of 20 A. made of a copper alloy with a bent edge of 0.0005 ".

Using this type of rivet, four superimposed conductors made of copper 302 can be advantageously connected when used at temperatures varying between -kO ° and 85 ° C.

From the description above and from observation of the various figures reproduced in the accompanying drawing, the considerable functionality and practicality goes Use of the bandfWSnigeni according to the invention on flexible

The plastic laminate of the conductor is clearly visible.

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Claims (2)

PATBN TANSPR UEuHB 11.1 ribbon-shaped conductor supported on a flexible plastic laminate, characterized in that it is provided with suitable holes serving for electrical connection, said holes being clad with conductive material which essentially forms an annular structure with a mushroom-shaped head. 2. Ribbon-shaped conductor according to claim 1, characterized in that it has an annular end portion so that it delimits a hole made through the thickness of its bearing laminate. 3β ribbon-shaped conductor according to claims 1 and 2, characterized in that welding metal is laid at the said hole in such a way that it forms a mushroom-shaped passage structure which has an expediently widened head and a stem, along the axis of which a hole is made, which is a rivet or can accommodate another similar organ., 4, ribbon-shaped conductor according to the preceding claims, characterized in that the peripheral portion & θβ called head is insulated by a layer of a protective substance . 509881/0888 A tape-like conductor i; oh the preceding claims, characterized in that the electrical _f
Connection with other similarly established ones
superimposed ladders ensured by press contact between the obstacles and the annular ends of the above-mentioned stems v / ird that with the ladders themselves
are intimately connected " 509881/0888 Blank page