Electrical switch for detecting and setting at least one limit point of a machine part which is supported such that it can pivot

摘要

In an electrical switch for detecting and setting at least one limit point of a machine part which is supported such that it can pivot and has a pivoting shaft which rotates alternately in opposite directions through a specific rotation angle, at least one adjustable switching finger, which interacts with a switching contact which is held fixed to the frame, is coupled to the pivoting shaft, by means of which switching finger the rotation direction of the pivoting shaft can be controlled. In order to achieve a very precise setting of the reversal points or stopping points of machine parts which are supported such that they can pivot, in an extremely simple manner using such a switch, the switching finger (8, 8') is arranged on one end part of a two-armed lever (7, 7') whose other end part (10, 10') rests on an adjustable stop (12, 12'), which is fixed to the frame, by means of a clamping spring (11, 11'), the lever (7, 7') having, in particular approximately centrally, a passage for a bearing bolt (6) which is arranged eccentrically on the end of the pivoting shaft (2), and the switching contact (9, 9') is arranged fixed to the frame in the pivoting region of the switching finger (8, 8'). IMAGE