DEN0009726MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: November 9, 1954. Advertised on May 24, 1956

GERMAN PATENT OFFICE

The invention relates to a connection strip with a number of mutually insulated Contact strips and a method for their production. Such connecting strips are z. B.

often used in automatic telephone systems where between the in racks an- ■ ordered devices with each other and between these devices and one or more multi-core Cables electrical connections must be made! From such stripes is a number of embodiments are known in which the contact strips in insulating holding members being held. There are also known embodiments in which the contact strips are insulated around a metal support.

The aim of the invention is to create a new type of connector strip of the type mentioned above, which is characterized by convenient assembly and easily accessible ends of the contact strips.

According to the invention, the connection strip consists of a U-shaped, strip-like, metal carrier, preferably made of aluminum, between the legs with interposition

609 527/340

Claims (4)

N 9726 VIIIal21a2 of insulating material a row of folded ones, with the two free ends protruding from the open side of the carrier. Contact strip is held. Preferably, the contact strips by means of a hardening plastic, for. B. an Äthoxylinußharzes, which fills the space inside the carrier, held in place. In the production of a connection strip according to the invention, a method is preferably used which is similar to a known method for forming the fixed contacts of a contact bank. In this preferred method, the contact strips are punched from a metal plate in the form of a row connected at the ends. This row is then folded as a whole, whereupon the folded edge is fixed in the carrier with the interposition of dosing material. Finally, the plate parts which still connect the remaining ends of the contact strips protruding from the carrier are removed. The invention is explained in more detail using an exemplary embodiment shown in the drawing. In this drawing, FIG. 1 shows an enlarged view of a connection strip according to the invention, an outer part being broken away at one point; Fig. 2 shows a section along the line II-II of Fig. I, and Fig. 3 shows a series of contact strips prior to application in the carrier. In the embodiment shown in Figs. 1 and 2, a number of folded contact strips ι is attached with their folded edge between two insulating strips 2, which can consist of hard paper, for example. The two strips 2 can of course be replaced by a single U-shaped insulating strip. The strips 2 are clamped with the contact strips 1 in a U-shaped aluminum carrier 3, which consists of an aluminum strip folded in the longitudinal direction. At the ends of the carrier 3 there are metal inserts 4 which fill the interior of the carrier. The ends of the carrier 3 and the inserts 4 are provided with mounting holes. The contact strips 1, of which the two free ends 6 and 7, to the z. B. a wire end can be soldered, protrude from the open side of the carrier 3, are held together with the insulating strips 2 in the interior of the carrier by a hardened plastic compound 8. This mass, which can consist of an Äthoxylinußharz, is poured into the interior of the carrier 3 and cured thereon. The inserts 4 prevent the still liquid cast resin from flowing sideways from the carrier during manufacture. The production of the connection strip described is based on a plate 10 from which, as can be seen from FIG connected by a remaining part 12 of the plate 10. The row of contact strips is now folded around line a-a. The row folded in this way is accommodated in the carrier 3 with the insulating strips 2 interposed. The inlays 4 are also attached. The contact strips 1 can be clamped with the insulating strips 2 by side pressure on the carrier 3. The contact strips are now anchored by means of a cast resin as described above. After the cast resin has hardened, the plate parts 11 and 11, which still connect the contact strips 1, are removed along the lines b-b and c-c (FIG. 3) and the openings 5 are made. If the carrier is made of aluminum, the insulation of the contact strips can possibly be achieved by providing its surface with a strong oxide skin, which is known to be a very good non-conductor. In this case, the insulating strips 2 can be omitted. . Pat ε ntan claims: 1. Connection strips with a number of mutually insulated contact strips, characterized in that that it consists of a U-shaped metal strip, preferably made of aluminum, as a carrier, between the legs with the addition of insulating material, a row of folded ends with the two free ends from the open side of the carrier protruding contact strip is held. 2. Connection strip according to claim 1, characterized in that the interior of the Carrier with a hardened plastic, for. B. a Äthoxylinußharz filled. 3. connecting strip according to claim 1 or 2, in which the carrier is made of aluminum, characterized in that the insulation of the Contact strip is obtained by an insulating oxide layer of the carrier. · 4. A method for producing a connection strip according to one of the preceding claims, characterized in that the contact strips are in the form of a contiguous one at the ends Row can be punched from a metal plate and the row is folded as a whole, after which the folded row is underneath Interposition of insulating material fixed inside the beam and finally the remaining ones Plate parts that connect the ends of the contact strips are removed. 1 sheet of drawings © 609 '527/340 5.56