Geometrical instruments
Patent
1984-05-01
1985-10-22
Desmond, Eugene F.
Geometrical instruments
339 17F, 339105, H01R 1358
Patent
active
045484600
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to an anti-slip device for ribbon-type straps and cables, particularly in assembly units connected with ribbon cables.
BACKGROUND ART
Such cable arrangement is understood by ribbon cable, in which the electrically conductive metal is a metal wire of circular cross section, or flattened metal ribbon, or optical lead wires laid parallel with and next to each other are arranged with continuous insulation, and the distances of the lead wires measured from each other are characterized in that they generally concur with the raster spacing of the plates with printed wiring.
Use of the ribbon cables is preferred especially in those apparatuses, where the cable follows the shape of the structure, or the components may shift within an apparatus or equipment. The flexible, multi-wire ribbon cables are mostly used with couplings fitted to the two ends. The couplings are required to fix the band shape of the ribbon cables without slipping and to prevent the mechanical joints of the thin wires of low strength from breaking off the printed circuit plate, or from its apparatus.
DISCLOSURE OF INVENTION
The invention relates to such ribbon cable fixing, anti-slip device, which prevents loosening or breakage of the mechanical joints arising as a result of the slip, by fixing the ribbon cable without capable of slipping, and the apparatus itself consists of less components than the apparatuses known so far, its production is simpler, assmebly easier and no failure will occur when the cables are connected up or pulled out of the coupling.
Thus the invention is such a fixing device which prevents the slip and for this purpose it forms the multitude of concentric circles as orthogonal trajectories on the surface of ribbon-type straps, particularly on the surface of ribbon cables, and it consists suitably of two half pieces. A fixing chamber is on one of the half pieces and fixing pins extend from the other half piece, fitting to the cavity of the fixing chamber when assembled.
The invention is explained by way of the enclosed drawings and the presently used general types are introduced.
BRIEF DESCRIPTION OF DRAWINGS
FIGS. 1(a) and (b) illustrates a prior art connecting assembly unit, in which the ribbon cable is folded back between the two main parts of the device enframing a distance piece.
FIG. 2 illustrates a prior art assembly unit in which two ribbon cable couplings are assembled.
FIG. 3 demonstrates a prior art, simple interlaced type coupling unit.
FIGS. 4(a) and (b); FIG. 5 and FIGS. 6(a), (b), (c), (d), (e) and (f) are general arrangements of the solution according to the invention.
FIGS. 7(a) and (b) is suitable embodiment of the invention.
FIG. 8 is embodiment according to the invention including the ribbon cable and illustrates the orthogonal trajectories arising from the surface of the ribbon cable.
FIGS. 9(a), (b) and (c) is section of the ribbon cable, formed by the fixing pins and its position can be interpreted according to the intersecting planes marked in FIG. 8.
FIG. 10 illustrates the suitable connection of the assembly units according to the invention.
BEST MODE OF CARRYING OUT THE INVENTION
In the generally used embodiment according to FIGS. 1(a) and (b), the ribbon cable is marked with reference number 9, the ribbon cable 9 folded back for the contacting part is marked with 9a, the two half pieces are 20, 21, the distance piece 22, onto which the ribbon cable 9 is folded back and thus forming the contacting part. Similar clamping is used by the United Kingdom Pat. No. 1 317 263 and U.S. Pat. No. 3,813,634.
FIG. 2 illustrates the general view of such ribbon cable coupling which demonstrates the connection of two, separate ribbon cables. In the order of the reference numbers the ribbon cable is 9, the ribbon cable end formed for the contact is 9a, the two half pieces encasing the end of the ribbon cable are 20 and 21, and the half pieces of the other ribbon cable are marked with 30, 31, 32. Such solution is shown in the West German patent disclosure No. 1 8
REFERENCES:
patent: 3713073 (1973-01-01), Narozny et al.
patent: 3879099 (1975-04-01), Shaffer
patent: 4225205 (1980-09-01), Sinclair et al.
patent: 4269466 (1981-05-01), Huber
patent: 4323295 (1982-04-01), Davis
Dozsa Laszlo
Pelencei Jeno
Somodi Gyula
Desmond Eugene F.
Telefongyar
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