DE1083340B - Circuit arrangement for establishing connections in telecommunication systems, especially telephone systems - Google Patents

Description

GERMAN

The invention relates to a circuit arrangement for establishing connections between Incoming and outgoing connection lines meshed with one another in terms of coordinates with their cross points assigned contact sets and windings of through-switching relays for Telecommunications, in particular telephone systems.

Arrangements of this type are known in which a relay is individually assigned to each cross point between an incoming and an outgoing line. If an arrangement includes the number "x" of incoming lines and the number "y" of outgoing lines, then "x times y" relays with at least one winding and thus at least i> x times 3 / "windings are required to actuate the contacts assigned to the cross points necessary.

In order to reduce the winding costs of these known arrangements, it is known to assign a magnet to each incoming and each outgoing line and to connect the contacts assigned to the intersection points via mechanical links, e.g. B. via rods, bridges and / or brushes to operate or to keep operated. With “x” incoming and “y” outgoing lines, only “x plus y” windings are required. With the last -mentioned arrangement, a considerable saving in winding expenditure thus appears to be possible. However, the saving is not so considerable, since a higher excitation is required for the actuation of the mechanical intermediate links and thus for the actuation of the contacts than when using relays. Furthermore, the mechanical complexity of actuators is not insignificant, and a further disadvantage is that two processes have to take place one after the other when actuating the contacts, namely one process to prepare for actuation by exciting one magnet and the actual actuation by exciting the second Magnets.

The disadvantages mentioned can be avoided by using so-called cross-coil coordinate selectors, in which the incoming lines each have a coil and the outgoing lines also each have one is assigned to the first-mentioned coils vertically arranged coil.

The contacts of these selectors are designed so that they are conductive for the magnetic flux that actuates them are. The magnetic circuits and the windings are dimensioned so that the arranged at a cross point Contacts are only actuated when both enclosing them, intersect at the intersection Coils are energized at the same time. The mechanical complexity of these arrangements is proportionate small amount. On the other hand, it increases when it is lower

Circuit arrangement

for making connections

in telecommunications, especially telephone

Investments

Applicant:

Dipl.-Ing. Dr.-Ing. Sven Arnold Karlsson, Grankulla (Finland)

Representative: Dipl.-Ing. A. Essel, patent attorney, Munich 2, Wittelsbacherplatz 4

Claimed priority: Finland, September 20, 1955

Dipl.-Ing. Dr.-Ing. Sven Arnold Karlsson, Grankulla

(Finland),
has been named as the inventor

2

The number of coils, the expenditure on copper and the expenditure in the magnetic circuit are not insignificant.

The object of the invention is to reduce the effort involved in

knew to belittle orders. This is achieved by the fact that various intersection points between incoming and outgoing connection lines associated windings one and the same Relay belonging to it, which is equipped with changeover contacts with a middle rest position.

During the transition from an arrangement with the crosspoints individually assigned relays to an arrangement with contacts controlled via rods and bridges reduces the winding effort. and the mechanical effort is increased and when transitioning to a cross-coil coordinate selector the mechanical effort is reduced and the effort in the magnetic circuit is increased it is possible with an arrangement according to the invention, with practically the same winding effort to significantly reduce the mechanical effort. As with the arrangements with which everyone Crosspoint a relay is individually assigned, can also in an arrangement according to the invention the switching through of a connection can be triggered with an actuation process.

According to a further embodiment of the invention, the effort is further reduced in that each winding of the relay several crosspoints between other

009 530/123

Incoming and outgoing connection lines is assigned jointly and that the selection of one Contact set actuated by the excitation of a winding, individually assigned to the cross points Contact sets for the effective through-connection of a connection are made by preselecting relays.

Due to the common assignment of each winding to several, e.g. two intersection points, almost constant winding effort, the effort of mechanical links ,, z. B. relay armatures, reduced will. The preselection relays set, as they have several intersections, z. B. an incoming line, can be assigned together, represents a low effort.

Exemplary embodiments of the invention are shown in the figures.

1 shows a coordinate field made up of incoming and outgoing lines;

Fig. 2 shows schematically a relay which is used in an arrangement having the features of the invention can be, and

Fig. 3 shows an example of the possible use of preselection relays.

With reference to the figures, the structure and the mode of operation of arrangements according to of the invention will be described.

1 shows the pilot wires cxl to cxm from incoming lines and the pilot wires cyl to cym from outgoing lines and the windings which are actuated via these pilot wires and are assigned to the intersections 11 to mn. The windings are connected in series with voltage-dependent resistors J, which are used to avoid parallel circuits, in a manner known per se.

According to the invention, windings Ml and M 2 assigned to different intersection points , for example ml and m2, belong to one and the same relay, which is equipped with changeover contacts, the middle contact spring of which assumes a central position between the outer contact springs in the idle state. Such a relay is shown schematically in FIG. 2.

The common armature A of the relay has two working positions, so that the contact spring kxm representing a contact spring set, which is assigned to an incoming line, either with the contact spring kyl representing a contact spring set , depending on whether the winding Ml or the winding M 2 is excited a first outgoing line or with the contact spring ky2, which also represents a contact spring set, of a second outgoing line comes into contact.

If each relay is equipped with several sets of contacts, it is permissible to operate the contacts at several crosspoints simultaneously by one and the same relay, provided that the insertion of preselection relays ensures that only one of the crosspoints operated by a relay is effectively switched through. A corresponding arrangement in which then the coils Ml and M2, respectively, not only the contact springs kxm of a cross point, but also the contact springs KXJ influence of other cross points is shown in FIG. 3. An incoming line Xj can contacts of Vorwählrelais OxIj, 0x2j optionally be connected to one of the intermediate lines Xl / to X4,7, to which contact springs or contact spring sets kx 1 to kx 4 are assigned. In general, as indicated in FIG. 3, several relays, each equipped with two windings in accordance with FIG. 2, are assigned to an incoming line.

Claims (3)

Patent claims: 1. An arrangement for establishing connections between incoming and outgoing connection lines meshed with one another in terms of coordinates with their crosspoints assigned contact sets and windings of switching relays for telecommunications, in particular telephone systems, characterized in that different crosspoints (e.g. ml, m2) assigned between incoming and outgoing connection lines Windings {Ml, M 2) belong to one and the same relay, which is equipped with changeover contacts with a middle rest position. 2. Arrangement according to claim 1, characterized in that each winding (z. B. Ml) is associated with a plurality of crosspoints between incoming and outgoing connecting lines and that the selection of a contact set actuated by the excitation of a winding, the crosspoints individually assigned contact sets for the A connection is effectively switched through via the preselection relay (OZl /, 0X2j) . 3. Arrangement according to claim 1 or 2, characterized in that the central contact springs (z. B. kxm) of the relays assigned to the crosspoints assume a central position between the outer contact springs {kyl, fe; y2) in the idle state. Considered publications:
German patent specifications No. 881958, 893 517, 928 299; German patent application S 34186 VIII a / 21 a ³ (announced on June 23, 1955); "SEG-Nachrichten", 1954, issue 1, pp. 7 to 10. 1 sheet of drawings © 009 530/123 6.