Electrical connectors – With magnet
Patent
1997-09-29
1998-11-03
Abrams, Neil
Electrical connectors
With magnet
200 5109, H01R 1130, H01R 1370
Patent
active
058299874
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an electromechanical connecting device according to the type more closely defined in the preamble of claim 1.
The connecting device of this type is described in EP 0 573 471 B1. The previously known connecting device, which consists of a switching mechanism which takes over the function of a socket-outlet of conventional type, and a tripping mechanism which takes over the function of a plug, provides a connecting device which exhibits a very small overall depth and which, in addition, meets high safety requirements.
In the electromechanical connecting device according to EP 0 573 471 B1, both the mechanical and the electrical contact are performed via magnets. For this purpose, both the operating slide, which can be connected to power supply contacts, and the actuating magnet are electrically conductive. The power connection is led directly via contact hats to tripping magnets in the tripping mechanism, which are likewise electrically conductive. The magnets are surrounded on the outside by an earthing ring which is let flush into the electrically insulating housing of the switching mechanism.
It is, however, disadvantageous in this connecting device that, because of the configuration of the actuating magnets and tripping magnets as mutually corresponding annular magnets, in the event of attaching the sensor in a twisted fashion to the switching mechanism, the operating slide does not switch immediately, and thus there is no immediate current conduction.
A further disadvantage consists in that magnetic materials are heat-sensitive, and thus a short circuit would lead to loss of the magnetic components.
It is therefore the object of the present invention to improve further the electromechanical connecting device mentioned at the beginning, in particular to ensure a still greater reliability by more rapidly connecting and returning the operating slide.
This object is achieved according to the invention by means of the features named in the characterizing part of claim 1.
According to the invention, a plurality of actuating magnets are now arranged with a spacing from one another with magnet parts which have different polarities. An equal number of tripping magnets having magnet parts of opposite polarity are arranged in the same circumferential region as the actuating magnets in the tripping mechanism. Owing to the fact that the contact pins in the tripping mechanism are mounted resiliently and project in the non-connected state, there is a reliable contact in the connected state.
The actuating magnets and tripping magnets can advantageously be constructed as segments. The segments and magnet parts in this case can be arranged in corresponding groupings with a spacing from one another at the edge of a circularly constructed operating slide. In this way, relatively small rotations of the tripping mechanism have a stronger effect on the switching mechanism, since in the case of rotations the respective opposite poles of the magnets are reached earlier, as a result of which a repulsion force is produced which additionally strengthens the restoring force through the restoring spring. The overall result of this is a larger restoring force and a more rapid return of the operating slide, current conduction thereby being more rapidly interrupted and overall safety being substantially increased.
For this purpose, the magnet parts can advantageously be arranged in appropriate codings, for example in alternating north/south combinations having 180.degree. symmetry, thus achieving a very rapid return of the operating slide in the event of rotations of the tripping mechanism. The relatively large angular lengths which occur in this case give rise even in the event of very small rotations to fields in opposite direction and thus to correspondingly high repulsion forces, with the result that the magnet slide returns to the non-connected rest state.
A further very advantageous refinement of the invention can consist in that the magnets no longer participate in the conduction of current or voltage; t
REFERENCES:
patent: 3521216 (1970-07-01), Tolegian
patent: 4317969 (1982-03-01), Riegler et al.
Bullinger Achim
Fritsch Klaus-Dieter
Neidlein Hermann
Abrams Neil
Byrd Eugene G.
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