DE660969C - Branch and connecting terminal, especially for overhead lines - Google Patents

Description

GERMAN EMPIRE

V \ .TI ΐ » r! \ -

ISSUED ON
June 7, 1938

REICH PATENT OFFICE

PATENT LETTERING

JVI 660 CLASS 21 c GROUP 21 οι

have been named as inventors.

Franz Wirschitz in Munich

The branch and connecting terminals for Electric overhead lines have so far been made entirely of metal, as there is no reason existed in terms of mechanical strength and electrical conductivity existing advantages of the uniform metal cross-section to give up. However, the current shortage of metal leaves this type of construction as a waste of metal appear. The fully metallic structure of the With the mass application of these line components, clamping causes a huge consumption of metal. The purpose of the invention is to remedy this and to reduce the need for metal for clamps of this type at an indispensable level To limit the minimum that is disproportionate to the previous need. Achieved this is according to the invention in that the actual terminal body made of non-metallic building material, ζ. Β. insulating Plastic, on which thin-layer pads are used as conductor holders and current bridges or metal inserts are attached. Although it is known per se, insulating materials, in particular insulating molded materials to be used as a carrier for live parts. However, this was done exclusively from the point of view of isolating the tension-inducing ones Parts, but not with a view to the partial replacement of the metallic conductor by a non-metallic building material for the purpose of saving metal.

In the drawing, embodiment c of the invention are shown.

Fig. Ι shows the cross section through a branch terminal for clamping identical metallic conductors.

Fig. 2 shows excerpts from the metal covering of the clamp.

Fig. 3 shows in cross section a connecting terminal for conductors from different Metals.

Fig. 4 shows a longitudinal section of the clamp according to Fig. 3 in its plane of symmetry.

The connecting or branching terminal of Fig. 1 is essentially in its external shape just like the one for

Claims (3)

(UK)! Mi) similar conductors used connectors. An essential difference, however, is that the clamping jaws are not made of a single building material, but instead consist of a non-metallic I main body α or b and a metallic Auflagec each on the clamping surfaces, which have cavities and notches to accommodate the conductors //. The cheek parts α and b, which are made of insulating building material and consist for example of pressed material, such as synthetic resin, with pressed fibers, nestle against the shape of the supports c, which are preferably anchored in them with punched-out tabs e 1.5- as shown in FIG are. The need for high-quality metal, as it is represented by the conductor r -.'.- metals', is very low with this type of terminal, since the cross-section of the supports c only has to be adapted to the conductor cross-section d in such a way that it is too large Contact resistance should be avoided. Mechanical reasons for the cross-cuddling measurement of the conditions c are completely secondary, since the forces are absorbed by the non-metallic clamping parts α and b to be produced accordingly. The invention enables a very advantageous solution to the problem of connecting conductors made of different metals to one another without corrosion. According to the embodiment according to FIGS. 3 and 4, the clamp intended for this purpose again consists of non-metallic clamp parts α and b. Corresponding to the different metals of the conductors d 35-, the thin-layer supports holding the conductors also consist of different sheet-metal pieces / and g, the pieces / corresponding to one conductor metal and the pieces g corresponding to the other conductor metal, so that none at the points of contact with the conductors Corrosion occurs. The support parts / and g are connected to one another at their joints by rivets Λ. There. It is precisely these stub parts that are at risk of corrosion, they do not rest on the non-metallic clamp bodies)! «and b, but are embedded in them, i.e. completely sealed off from moisture and outside air. The pressing process of the jaw manufacture enables this arrangement to be readily made. Otherwise, the supports / and g can also be anchored in the body parts α and b with flaps according to FIG. 2. The cross-sectional dimensioning of the requirements and thus the metal consumption is based again only on the possibility of harmless electricity loading. 'PiTE-VTAXSl1RrCIlE: 1. Abzweig- und Yerbiiidungsklcmme, <i »especially for overhead lines, characterized in that the actual terminal body {a, b? from non-metallic! Building material, e.g. B. insulating plastic, consists on \ velchem as a ladder holder and 6, ¹ ; Current bridges thin-layer layers or inlays (c) made of metal are attached. 2. Branch and connecting terminal according to claim 1 for different metallic conductors, characterized in that the metallic supports (/, "· ) correspond in their building material to the conductors touched by them (d) and are united at their joint, for example riveted, and that the joint is embedded in the non-metallic clamp body (a or / ;; in a corrosion-proof manner). 3. Branch and connecting terminal according to claim ι and 2, characterized in that the metallic supports ( ^c /}> S) ^mlt, for example, punched anchor, flap (e) engage in the non-metallic terminal body Ca, b) . 1 sheet of drawings Ht; ill IV.CtIUIt-CKT IN I) KIt