Electric switch suitable for motor vehicle e.g. throttle flap, steering column or drive - assigns permanent magnets of same polarity to both ends of Hall element, one magnet being connected to adjustable actuator and other adjustable for balancing control

摘要

The electrical switch has a multi-part housing of non-magnetic material, accommodating a Hall switching package (6) which can be changed by an actuating element (3), in association with two permanent magnets arranged with like poles facing one another. The first magnet (4) is attached to the actuating element, while the second magnet (5), acting as a balancing member, is held in the housing and its distance from the switching package can be set by a screw. On one side of the actuating element, there is a projection (3a), with a chamber (7) for the first magnet and in the base (1) of the housing, in the direction of actuation, there are in succession a second chamber (9) for the Hall switching package and a third chamber (16) for the second magnet. All these parts are held in their chambers in such a way that the main surfaces of the package lie between ends of the magnets. ADVANTAGE - Has little or no hysteresis effect and switching point can be set simply.