Tyco Electronics Logistics Ag

Tyco Electronics Amp Gmbh

Siemens Aktiengesellschaft

Siemens Electromechanical Components Gmbh & Co. Kg

Baumer Hubner Gmbh

Miele & Cie. Kg

Baumer Germany Gmbh & Co. Kg

Martin Hanke

Ralf Hoffmann

Karsten Pietsch

Michael Dittmann

Thomas Haehnel

Josef Kern

Matthias Kroeker

Helmut F Schlaak

Bernhard Hiller

Jens Heinrich

Volker Gerth

Joerg Schultheiss

Christian Hunnekuhl

Juergen Breitlow-Hertzfeldt

Martin Behrenswerth

Michael Agethen

Rainer Vogel

Bernd Saffian

Thomas Buescher

Jens Schneider

Thomas H&auml;hnel

Sebastian Stenzel

Willi Geser

Cornelia Chwolka

Fabian Hartmann

Andreas Ringeln

Florian Hartmann

Herr Bernhard Hiller

A shaft encoder arrangement () provides high precision and at the same time can be used in harsh environments and is simple to mount. The shaft encoder arrangement () has at least one measuring device () for determining a rotary position of a rotatable body, for example, of a shaft () of a motor (), with at least one magnetic dimensional scale () that can be mounted on the body and at least one sensor device () for scanning the magnetic dimensional scale (). The sensor device () lies at least partially within a space () enclosed by the magnetic dimensional scale (), and the magnetic dimensional scale () is enclosed by a circumferential magnetic shield (). The magnetic shield permits use of the shaft encoder arrangement () even in harsh environments and even in strong magnetic interference fields.

Shaft encoder with magnetic shield

The invention relates to a bi-stable electric switch comprising a spring () that is configured as a bi-stable snap-action spring and carries contact elements () on the carrier strip () of the spring and comprising at least one drive element made from shape memory material per switch state for actuating the spring, the spring having a plate () that is rigidly fixed at one end () and that is subjected to a pressure in the direction of its linear extension and evades this by bulging towards one side into one of two stable final states, the regions of the spring in the stable final states taking up different lateral positions and the drive elements () acting upon the free end of the plate and as a result of the tilting of free end () cause it to snap into the second stable final state.

Bistable electric switch and relay with a bi-stable electrical switch

The present invention relates to an armature spring ( ) for a relay comprising a fastening section ( ), a connected oblong spring section and a lever ( ). The lever is located on the side of the longitudinal axis of the spring section opposite to that of the fastening section ( ) so that the spring section is subject to torsional stress. Due to the torsional stress of the spring section, an even progression of the spring characteristic curve can be achieved. The stress is very even, so that the spring is very small and simple. In advantageous embodiments, the spring section extends parallel to the armature pivot axis and is formed by a torsion web ( ). The lever section can be flexibly deformable. As a result the spring characteristic can be particularly easily and flexibly adjusted. As a result the spring armature can be combined with a magnet system exhibiting opening angles of 10&deg; to 15&deg;.

Armature spring for a relay

A load-disconnecting switch has a permanent-magnetic holding circuit. A coil ( ), upon excitation thereof, generates a magnetic flux that is opposite to the magnetic flux of the permanent magnet ( ). The armature ( ) is biassed to an open position by an armature spring ( ), so that the armature spring ( ), when a defined operational excitation is exceeded, detaches the armature ( ) from the core ( ) of the magnet system, allowing said armature to open and thereby disconnecting a switching contact ( ) and a fixed contact ( ). The load-disconnecting switch can be switched on again by means of a spring clip ( ) acting on said armature ( ).

Load disconnecting switch especially for use in motor vehicles

The magnet system is part of a relay, which displays particularly low-noise switching. Components of the magnet system include a core unit ( ), an armature ( ) and a not represented coil, whereby the armature ( ) is preloaded in an open position. The low-noise switching behavior is achieved in that the armature ( ) is designed in such a manner that the armature pole face in the region of its front end ( ) in the closing direction is essentially perpendicular to a connecting line ( ) towards the bearing edge ( ). In addition, when the armature ( ) is attracted, the core pole face ( ) extends at least substantially parallel to the armature pole face ( ). The arrangement according to the invention requires no additional parts for the purpose of noise reduction, resulting in a particularly simple and compact structure.

Magnet system for a relay

The invention relates to a relay, especially a miniaturized electrostatic relay, comprising a bridge-type make contact. The contact spring is designed as a torsion spring that is linked with a switching spring ( ) via multiply bent spring parts ( ). It is thus possible in particular to compensate fixed contacts ( ) of different heights. The invention further relates to a method for producing the relay as a micro-mechanical electrostatic relay.

Microelectromechanic relay and method for the production thereof

The relay comprises a base body ( ), a coil ( ), a core arrangement ( ), an armature ( ) and a contact system. The contact spring ( ) is configured as an arc and arranged to be connected with the armature ( ) in such a way that it is subjected to uniform, low mechanical loading. As a result a material can be used for the contact spring ( ) which presents high electrical conductivity, so that the forward resistance of the relay is reduced. The contact spring ( ) and armature ( ) are arranged in such a way that a relay with a compact structure can be obtained.

Electromagnetic relay

A relay has a leaf spring that is secured to a planar seating section of a yoke leg and/or to the planar seating section of the armature and has an unsecured spring section extending beyond the free end of the yoke leg or, respectively, the armature. In order to avoid a plastic deformation of the leaf spring given impacts, the planar seating section respectively merges into a convexly curved roll-off section of which the leaf spring rolls off given a blow without being bent permanently. The end of the roll-off motion is expediently limited by a detent and, in this way, it is assured that the relay does not suffer any permanent modifications of its characteristics, even given heavy blows.

Growing community of inventors

Berlin, Germany

Martin Hanke