DE1765126A1 - Magnetically operated armature contact - Google Patents

Description

Dipl.-Ing. Heinz Claeasen

Patent attorney
7000 Stuttgart W.
Rotebühlstrasse 70

ISE / Reg. 3868

M. Scata - 223-46

INTERNATIONAL STANDARD ELECTRIC CORPORATION, NEW YORK

Magnetically operated armature contact

The priority of application No. H 688 A / 67 dated April 7, 1967 in Italy is used

The invention relates to a magnetically actuated armature contact whose armature is under the influence of at least a permanent magnet and cooperates with rod-shaped counter-contacts arranged in pairs on the end faces of the housing, which are opposite each other in such a way that four electrically separated contact points are created.

Such an anchor contact is through the German usage amuutüi « 1-925 297 and the German patent specification 1 219 588 are known. In the contact arrangements shown and described there the armature is designed as a ball and freely movable between the opposing fixed contact pieces. This movement takes place for example by the magnetic field of one outside the Housing slidably arranged permanent magnets.

It is also known to use a V-shaped armature in a hermetically sealed contact arrangement. Such an arrangement is shown in US Pat . No. 3,238,325, eds. 1 and 2. 04/04/1968

■ I 109827/0464 '~ ² ""

ISE / Reg. 3868 '

—2—

Here, however, the anchor is used in a conventional manner for deflection of contact springs ..

The invention is based on this prior art. Her lies the task of creating a magnetically actuated armature contact, the structure of which is extremely simple and therefore a cheap, automatic mass production allowed. According to the invention this is achieved in that the armature has a V-shaped shape and is tiltable on a cutting edge in a two-part Insulating housing is stored.

According to an embodiment of the invention, the insulating parts connected by pins which are formed on the lower insulating part and pressed into bores in the upper insulating part.

According to a further embodiment of the invention, the armature moves suddenly and occurs through excitation or actuation of electromagnets and / or permanent magnets.

In a further embodiment of the invention it is provided that the 3 the insulating parts of the housing are pushed into a small tube made of metal or plastic. The insulating parts of the housing but can also only be wrapped with an adhesive tape.

According to a further embodiment of the invention, the protective tube has a greater length than the insulating parts and is hermetically sealed at the front ends by means of a common material. ·

According to a further embodiment of the invention , the connecting ends can be held together and the actuating magnets arranged in such a way that a polarized, monostable or bistable relay is created

109827/0464

-3-

ISB / Reg. 3868

The "magnetically actuated armature contact described has various Benefits on. For example, this contact does not have to be adjusted and is tolerable due to the balanced armature shape also shocks and high acceleration forces without adversely affecting its switching behavior. Y / still are no springs included in the structure, which allows easy assembly. The housing is in the simplest possible way without screws or rivets plugged together and consists of two insulating parts, for example made of glass, ceramic or various plastics can be shaped. The anchor contact also offers the possibility of a very small design as a miniature contact, he but can also be made larger. Its possible uses are diverse, e.g. in single or multiple pushbuttons, Switches, microswitches, relays with single or multiple contacts etc. The housing of the armature contact can also enclose several contact arrangements, so that a multiple switch arises. Due to the versatile actuation and switching options, the armature contact can be used as a double break contact or can be used as a changeover contact.

The invention is described with reference to drawings. In the drawings show:

Pig. 1 the armature contact described, cut open;

2 shows the armature contact seen from above, partially cut open;

Pig. 3 one of an axially magnetized ring-shaped Permanent magnets enclosed armature contact, in three-dimensional representation;

Pig. 4 shows a schematic diagram of a polarized relay with the armature contact described;

109827/0464

-4-

ISE / Reg. "3868

-4-

Mg. 5 a prince ipdars notification of a bistable relay the anchor contact described;

6 shows the armature contact as a changeover contact;

Pig. 7 and FIG. 8 two exemplary embodiments of the armature contact in the assembled state. , -. ■■.

In the pig. 1 and 2 show two insulating parts 1 and 2 which are held together by pins 3 arranged on the insulating part 1 and pressed into bores 4 of the insulating part 2. These insulating parts 1 and 2 form a housing in which a movable armature 6 and four fixed contact pieces 9 »9 ¹ are arranged. The armature 6 has a V-shaped shape, is on

a cutting edge 8 of the housing and is held in place by projections 7 of the housing. The armature 6 and the contact pieces 9 »9 ¹ consist of magnetically conductive material and are coated with a conventional, electrically conductive material. The armature 6 is freely supported, ie it has no predetermined position. The position of the armature 6 is determined by the position of a permanent magnet 10 (Pig. 1) or an annular permanent magnet 11 (Pig. 3). A movement of the permanent magnet in the longitudinal direction of the housing causes the armature 6 to suddenly tilt from one fixed contact ^{piece pair 9 or 9 1} to the other fixed contact ^{piece pair 9 f} or 9 without the armature 6 assuming a central position.

The assembly of the housing can be done in different ways.For example, the insulating parts 1 and 2 can be inserted into a small tube made of plastic or metal or just an adhesive tape 14 can be wrapped around the insulating parts 1 and 2 (Pig. 7 and 8 ). Here, when the protective tube, or the adhesive tape 14 have the same length as the Ieolierteile 1 and 2, one obtains a contact arrangement, which works in the normal atmosphere, but is protected from dust; is

109827/0464

ISE / Reg. 3868 ^BC

However, on the contrary, the protective tube or the like. Somewhat longer than the insulating parts 1 and 2, the contact arrangement can be hermetically sealed by potting the two ends of the housing with resin or another common material 15. If this operation is carried out in a protective gas atmosphere, for example under an inert gas, the housing is also filled with this gas after the hermetic sealing. The fixed contact pieces 9 »9 ¹ can be bent together in hairpin-shaped pairs and placed in the housing in order to facilitate the positional fixing of the contact pieces 9» 9 ¹ . The ends 24 are then sheared off (FIG. 2).

The anchor contact described is mainly used to alternate Switching of two normally closed contacts used.

If two of the outer connection ends 17 or 18 are connected to one another by a conductor 16, as shown in S ¹ Xg. 6, a conventional changeover contact is obtained.

In Pig. 4 is the armature contact in a polarized version Relay shown. In this case, the permanent magnet 12 can also be designed differently from that shown in Mg · 4. Purpose of Permanent magnet 12 is bridging the terminals 5 through the armature 6 on the right side of the Mg. 4. One on the opposite Electromagnet 13 located at the end of the contact arrangement causes the armature 6 to switch to the left side as soon as the Magnetization by the electromagnet 13 neutralizes and exceeds the magnetization applied by the permanent magnet 12. In this way a monostable relay is obtained.

An arrangement similar to the arrangement according to FIG. 4 is shown in FIG. 5, which shows a bistable relay. In this case it flips the armature 6 depending on the direction of excitation of the coils 22 and 23, which interact with the permanent magnet 21, either in the one or in the other end position. The permanent magnet 21 is between

109827/0464

ISE / Reg. '3868

Coils 22 and 23 arranged and holds the armature 6 in the last switched position. The magnetic circuit 19 is isolated from the connections 5 by insulating pieces 20.

7 claims

2 sheets of drawings, 8 figures

109827 / 0A6A

Claims (6)

ISE / Reg. 3868 claims 1. Magnetically operated armature contact, the armature of which is under the Influence of at least one permanent magnet and with rod-shaped arranged in pairs on the end faces of the housing Mating contacts cooperate, which are opposite each other in such a way that four electrically separated contact points are created, characterized in that the armature (6) has a Y-shaped shape and can be tilted on a cutting edge (8) is mounted in a two-part insulating housing (1,2). 2. anchor contact according to claim 1, characterized in that the Insulating parts (1 and 2) 'by pins (3) formed on the lower insulating part (1) and in bores (4) in the upper insulating part (2) are pressed in, are connected 3. Armature contact according to claim 1, characterized in that the armature (6) moves suddenly and is caused by excitation or Actuation of electromagnets (13 »22, 23) and / or permanent magnets (10, 11, 12, 21) happens. 4. An anchor contact according to claim 1, characterized in that the insulating parts (1, 2) of the housing in a small tube made of metal or plastic are inserted. 5. An anchor contact according to claim 1, characterized in that the insulating parts (1, 2) of the housing are wrapped with an adhesive tape (H) are. 6. anchor contact according to claim 1 to 4, characterized in that the protective tube has a greater length than the insulating parts (1, 2) and at the front ends by means of a common material (15) is hermetically sealed. 109827/0464 ISE / Reg *. 3868 -8th- 7β armature contact according to claim 1 to 6, characterized in that that the connection ends (17, 18) are interconnected and the actuating magnets can be arranged so that optionally a polarized, a monostable or a bistable relay is created.