DETECTOR DEVICE FOR DETECTING THE LOCKING STATE OF A SEAT BELT LOCK, INSERT, AND SEAT BELT LOCK EQUIPPED WITH A DETECTOR DEVICE

A detector device for detecting the locking state of a seat belt lock, such as for an automobile restraint system, is disclosed, which has a swivel lever that is designed like a strap and that is hinged to a switch housing via a swivel axis (A) that is arranged eccentrically and that has at least one operating arm projecting from the swivel axis (A), which arm extends above the switch housing and can move into a second end position by interaction with a component of a locking mechanism of the seat belt lock that can move in translation against a return force from a first end position, in which its at least one operating arm extends above the switch housing. The detector device has a sensor device for detecting the change in position of a section of the swivel lever that can swivel from the starting position into its laterally and vertically changed end position.