DE6608865U - ELECTRICAL CONTACT ARRANGEMENT. - Google Patents

Description

CA ^ CE-SMAS

Jüiektrizitäts Aktiengesellschaft

403 ratings

ßahnstr. 39-47 TP-Nitsch / Sp

Ratingen, September 9th. 197 '

Tr-Mr. 1033

.Electric contact arrangement

The invention is concerned with an electrical contact arrangement with at least one between contacts arranged, inherently flexible contact rod.

In many cases, several such contact rods are used in the association at the same time. SIi form, for example, legs of loops which are made of a contact material, for example wire, strung together in the form of a band to form a contact band. The band is curved lengthways. Such known contact strips are often used to transfer contacts between two concentric conductors and are wound into a king that is inserted into a corresponding gap. These strips are characterized by high economic efficiency, they are easy to manufacture, require little space and are extremely reliable. For these reasons, contact strips are often used, which are punched from resilient L <7 liter sheet metal and deformed accordingly.

ψ '" 66Θ8865-2.1Ζ71

In S ¹ Ig. 1 shows a known contact strip in an exemplary embodiment. The illustration shows the electrical connection of a high-voltage fuse cartridge 1 with the electrically conductive connection base 2 to a stationary, cylindrical conductor element 3, the contact strip 4 being inserted into the annular gap. The latter is shown in sections in FIG. 2 in the extended position. The resilient conductor wire 5 is laid in loops in the form of a band, the loop radius rushing to the smallest permissible bending radius of the LeiteiuiSxiieS. The xCüxxtäktbäxiu 1st ix'x LäxigS - arched or curved in the direction and - wound to form a ring - inserted into the conductor element 3. It is held there by inherent elasticity and is secured against longitudinal displacement by the bead 6.

Now it has been found if to be expected under certain circumstances with unusually large dimensional tolerances of the terminal counter of the terminal base 2 is _f it can come to a permanent deformation of the belt, which in turn leads when using an afflicted with a smaller tolerance terminal in an insufficient contact .

This Kachteil, which is also used in any other contact arrangement with individual or several similarly acting contact rods j occurs should be eliminated. In addition, when using the contact strip shown, the insertion force should be relatively large are reduced and finally the operating current is to be increased, and all without an extra To require installation space.

According to the invention, it is proposed to use the contact rod to adjust or deflect between the contacts in such a way that it primarily stresses torsion when making contact will.

In order to convert the bending force into a torsional force in the case of the contact band implement, the loop legs should be deflected laterally in the direction of the longitudinal curvature of the belt.

As a result, a greater resilience of a contact rod can be achieved, since such a rod is now on its Length can be elastically stressed almost uniformly,

6608 & 65-2.1Z71

while the loading of the known bending bars only extended to certain critical zones and there the material was claimed to the utmost limit.

A wire for a contact strip according to Pig is used for this. 1 the following changes in shape:

a) Looping

b) Deflection of the loop legs

c) Longitudinal curvature of the belt

d) ring-shaped winches

s) "Laotian deformation in the operating state"

In Pig. 3 shows a section of a belt according to the invention.

Pig. 4 shows the arrangement of the contact strip 7 in the gap between the stationary contact element 8 and the movable one Contact element 9 (connection socket 2 of Pig. 1). The contact points 10 between the contact strip 7 and the movable Contact elements 9 are annular in a plane around the latter arranged.

If the movable contact element 9 is introduced into the contact arrangement for making contact, then the spreading force is at the same time and to overcome the contact friction. According to a further development, this push-in force can now be essentially reduce by the fact that the most bent out due to the longitudinal curvature as well as the lateral deflection Place two adjacent legs facing each other offset.

An implementation of this is in Pig. 5, i.e. the legs of the deflection angle ^ L are alternately with different Length fitted. In this way, according to FIG. 6, between the contact strip 11 and the movable one result Contact element 12, the contact points 13 and 14 in two different Levels, and when inserting the movable contact element v / earth first the contact points dex * one level spread and then that of the other levelj the size of the spreading force is thus halved. The number of contact levels can be designed as desired.

As has already been said, is for a specific contact diameter a maximum number of loops - due to the wire diameter = Sctueifenradius - given and thus one certain number of single contact points. That has in connection with a constant contact pressure range a certain permissible operating current result. .A further embodiment of the invention can be used without increase the installation space - almost triple the operating current by increasing the number of contact points.

For this purpose, the loops of the contact strip according to Pig. 2 in a Y / angle (about 45 °) inclined to the plane of the drawing, and above and below either in the same or in opposite directions Direction of rotation.

In this way, the view shown in Fig. 7 is created and it can be seen that the movable Kontal: telement facing contact points 15 have now almost tripled »

In terms of production technology, this tape can be flattened by a and then according to FIG. 9 produce arched wire coils in the longitudinal direction.

Used in Pig. 7 the wire in the operating position analogous to Pig. 2 is subjected to bending stress, a combination with that in Pig. 3 shown Porm with the additional sexual Pig deflection. 8 torsional stress with increased Pressure drop.

8681865-2.1 * 71

Claims (4)

! EP-Mr. 1033 Ratingen, September 9th, 1971 s ρ r ü c η e 1.) Electrical contact arrangement with at least one arranged between contacts, resiliently bendable contact rod, characterized in that the Kon.taktstab is adjusted or deflected between the contacts in such a way that it predominates when making contact experiences a torsional stress. 2.) Electrical contact arrangement according to claim 1, in which the contact bars form the legs of loops, polygons made of a contact material strung together in a band are wound to form a contact band, the band being curved in the longitudinal direction, characterized in that the Loop legs are deflected in the direction of the longitudinal curvature. 3.) Electrical contact arrangement according to claim 2, characterized in that that by the longitudinal curvature as well as by the lateral deflection the furthest bent points two adjacent legs are offset from each other * 4.) Electrical contact arrangement according to claim 2 and 3, characterized characterized in that the loop root is employed obliquely in the longitudinal direction of the belt.