DE1021078B - Electromagnetic relay and its use in a circuit arrangement for dialing checks - Google Patents

Description

The demands placed on electromagnetic relays by circuit technology are generally very high of different types. B. the requirement that certain contacts within a Switching before other contacts belonging to the same relay are actuated.

In the known relays this requirement is due to additional mechanical effort on springs or Anchor parts met. Apart from the susceptibility of such relays to failure, in many cases artificial circuitry that requires additional switching elements, z. B. capacitors, rectifiers od Allow the relay to work within the circuit.

The object of the invention is to avoid these disadvantages of the known relays. This is achieved by that, according to the invention, contacts (protective tube contacts) are arranged in the scattering path of an armature actuating coil are whose contact springs guide the magnetic flux that actuates them. When energized the coil will be first the contacts arranged in the scatter path of the coil and then the contacts influenced by the armature actuated. Such a relay can e.g. B. very useful in the test circuits of fast switching Step switch dials or motor selectors can be used. With the known test circuits for motor selectors two relays are used, of which the first is a fast switching relay with only a few contacts and only serves to shut down the selector, while the second auxiliary test relay is switched on by the first the other switching tasks of the test circuit, e.g. B. through switching, blocking, etc., takes over. By the invention, the cost of such test circuits is reduced, since the relay described both the requirements placed on the high-speed relay and the auxiliary test relay are met.

The relay can also be designed so that the contacts arranged in the scattering path of the coil are already actuated when the relay is energized which is not yet sufficient to actuate the armature. Whether the armature actuates further contacts, a stepping mechanism, printing mechanism or a counter is immaterial for the invention. So it is z. B. conceivable that the protective tube contacts are arranged in the scattering path of the coil of a counter. The contacts can then either be actuated together with the counter or, with a corresponding arrangement or design, with an excitation of the coil that is insufficient for actuating the armature alone.

Such a counter is shown in FIGS. 1 and 2; however, only the essential details are shown this counter.

1 shows a longitudinal section through the counter, Hg. 2 shows the section I-I indicated in FIG. 1; in

Electromagnetic relay

and its use in a

Circuit arrangement for voter testing

Applicant:

Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Witteisbacherplatz 2

Dipl.-Ing. Gerhard Rolle, Munich,

and Helmut Hahn, Munich-Großhadern,

have been named as inventors

3 to 5 are shown three circuit examples for a counter, in which, according to a further training of the invention, the contacts arranged in the litter path of the coil, in the telephone systems when lifted of the handset at a subscriber station before checking a call finder or pre-selector closed supply circuit or in the speech wires of the subscriber line and / or in the circuit of a through-connection the subscriber line causing switching means are switched.

First, the structure of the counter will be described in detail with reference to FIGS. 1 and 2.

The coil 2, in the scattering path of which contacts 3 are arranged, is wound around the core 6, which is attached to both of its from the coil protruding ends 7 is angled. With the ends 7 of the core 6 are the contact spring ends 5 of the contact springs 4 are magnetically conductive, but connected in an electrically insulated manner. The flux guide plates 8 are partially magnetically connected to the contact spring ends 5 and partially run parallel to the contact springs, so that when the coil is excited, each of the contact springs is removed from the flux guide plate assigned to it is repelled in the direction of the other contact spring.

The contacts located in the scattering path of the coil can be arranged or the flux guide plates can be designed in such a way that contacts located at different locations are subjected to different excitation be operated. So it is z. B. conceivable that the outer shown in the section I-I in FIG Contacts are only actuated when the excitation is greater than that of the inner contacts.

709 810/253

The armature 1 of the relay can also be actuated with a different excitation, e.g. B. with a third stronger arousal level. When the armature is actuated, the dial 9 of the counter is activated via the lever 10 adjusted. However, as already stated, it is also conceivable that the armature actuates further contacts or advance a voter.

With reference to FIGS. 3 to 5, the structure and mode of operation of circuits for voter verification using the aforementioned relays will be described in detail below. In the circuit example shown in FIG. 3, contacts 1ζ to 4z are arranged in the scatter path of the counting relay Z. These contacts take on the task of the contacts of an isolating relay used in the known subscriber circuits in addition to the counter Z and call relay R; they are operated via the winding I of the counter Z , regardless of whether the earth is connected to the winding of the counter directly or via the resistor Wi. The armature of the counter, on the other hand, which adjusts the dials, is only actuated when earth is connected directly to winding I.

When the receiver is picked up at the subscriber station Tn , the call relay R responds in a circuit running over the subscriber line:

1. Earth, 2z, b, Tn, a, Iz, R, -.

The relay R causes the selector W to be triggered, which adjusts itself to the calling subscriber with its switching arms aw, bw, cw and zw. The test relay P is switched on at the step at which the calling subscriber is switched on:

2. Earth, ..., P, cw, ..., Wi, IZ, -.

Simultaneously with the relay P the counter Z of the participant is energized in the first stage. This actuates the contacts arranged in the scattering path of the coil. Contacts Iz ₁ 2z open and contacts 3z, 42 close. Opening the contacts Iz, 2z interrupts the circuit 1 and disconnects the relay R from the subscriber line. The other lines ajb and al / bl are switched through at contacts 3 ^ and 4 ζ.

Upon arrival of counts of the contact 16 ζ 1 is in each case closed, and thus via the switching arm zw given a current gain to the counter Z, so that this also actuates its anchor. At the same time as the armature, further contacts located in the leakage path of the coil can also be actuated by current amplification, via which the counting pulse current source can be connected to the subscriber line, for example when counting at the subscriber station.

In the circuit example shown in FIG. 4, contacts arranged in the scatter path of the counter Z replace the call relay of the subscriber circuit, while the isolating relay T is designed separately.

When the receiver is picked up at the subscriber station Tn , the relay Z responds in a circuit running over the subscriber line:

3. Earth, 12t, b, Tn, a, Ut ₁ IlZ, -.

With this circuit, the counter Z is only excited in the first stage, so that it only actuates the contacts arranged in the scattering path of the coil. The isolating relay T is connected to the test arm cw of the selector W at contact 15z. When the selector is set to the step assigned to the calling subscriber, a circuit for the test relay P and the isolating relay T is closed: ■ - ..

4. Earth, ..., P, cw, ISz, T, -.

Test relay P and isolating relay T respond. The relay Γ opens its contacts 11 1, 12t and switches off the winding HZ from the α wire of the subscriber line. The connection is switched through at contacts 13 1, 14t.

When counting pulses arrive, a pulse is given at the contact 16z 1, as in the exemplary embodiment according to FIG. 3, via the arm zw of the selector. The counter Z is thereby excited in the second stage via its windings I and II, so that it actuates its armature.

In the circuit example shown in FIG. 5, the contacts arranged in the scatter path of the counter Z replace both the ringing relay R and the isolating relay T.

Via the winding II, the counter Z is excited in the first stage, in which it actuates its contact 15z and thus connects the winding III to the bank contact rows swept by the test arm cw of the selector W.

In the test circuit, the counter Z is excited in the second stage via its winding III, in which it opens its contacts 21z, 22z and closes its contacts 23z, 24z.

When counting pulses arrive, the counter is excited in the third stage via its winding I, as far as he operates his anchor.

As in the embodiment of FIG. 3, the various windings of the Counters combined in one and the individual current levels achieved through upstream resistors will.

Claims (7)

Patent claims: 1. Electromagnetic relay, characterized in that an armature (1) in the scattering path actuating coil (2) contacts (protective tube contacts 3) are arranged, their contact springs (4) lead the actuating magnetic flux. 2. Electromagnetic relay according to claim 1, characterized characterized in that the contact spring ends (5) are arranged in the scattering path of the coil (2) Contacts (3) magnetically conductive, but electrically isolated from the core (6) in the coil (2) are connected. 3. Electromagnetic relay according to claim 2, characterized in that the contact spring ends (5) the contacts (3) arranged in the scattering path of the coil (2) are magnetically conductive, however electrically insulated with angled ends (7) of the coil core (6) are connected. 4. Electromagnetic relay according to one of the preceding claims, characterized in that that in the scattering path of the coil (2) flux guide plates (8) are arranged, some of which are magnetically conductive the contact spring ends (5) are connected and partially guided parallel to the contact springs (4) in such a way, that when the coil (2) is excited, each of the contact springs (4) is removed from its associated flux guide plate (8) is repelled in the direction of the other contact spring. 5. Electromagnetic relay according to one of the preceding claims, characterized in that that one or more contacts (3) are arranged in the scattering path of the coil (2) that they at a certain magnetic flux, other contacts (3) such that they are at a stronger or weaker magnetic flux can be operated. 6. Electromagnetic relay according to one of the preceding claims, characterized in that that the coil (2), the contacts (3), their contact springs (4) in their scattering path, the magnetic flux that actuates them lead, are arranged, actuated an armature (1), which advances a counter (number wheel 9) in a manner known per se. 7. Circuit arrangement for voter testing using an electromagnetic relay according to claim 6, characterized in that the contacts (3 or z) arranged in the telephone systems in the scatter path of the coil (2 or windings I Z, II Z, III Z) when picking up the handset at a subscriber station (Tn) before checking a caller or pre-selector, the supply circuit is closed or in the speech wires (a, b) of the subscriber line and / or in the circuit of a switching means (T or Ill Z) that switches the subscriber line through are switched. 1 sheet of drawings