Electric steering lock

Electric steering lock for motor vehicles with a locking pin (10) which, with respect to a steering column (15), can move back and forth (14) between a locking end position (10.1) and an unlocking end position (10.2);

• with a device for detecting the position of the locking pin (10), comprising:
• a permanent magnet (20) and two different Hall sensors (21, 22), which are connected to an evaluator (19);
• where the permanent magnet (20) or the Hall sensors (21, 22) move back and forth (14) along with the locking pin (10) and where, during this concomitant movement (14), a pole transition (23) of the permanent magnet (20) passes over the Hall sensors (21, 22), and
• one sensor (21) monitors the locking position (10.1), while the other sensor (22) monitors the unlocking position (10.2), wherein,
• both sensors (21, 22) are digital, one of the sensors (22) is S-active, whereas the other sensor (22) is N-active,
• the two Hall sensors (21, 22) are mounted in an intermediate space (25) between the two end positions (10.1, 10.2) of the pole transition (23) of the permanent magnet (20) and have a defined final distance (38;
• 39) in the two end positions (10.1, 10.2),
• when in one end position (10.1), the N-active sensor (21) faces the north pole of the permanent magnet (20), and when in the other end position (10.2) the S-active sensor (22) faces the south pole of the permanent magnet (20), and
• the final distance (38;
• 39) corresponds to a distance at which the magnetic flux density (30.1) of the permanent magnet (20) at a highest temperature which can occur during operation is at least equal to a threshold value (22.1, 21.1) required to turn on (26.1, 27.1;
• 28.1, 29.1) the N- or S-active sensor (22;
• 21).