| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for detecting a relative angular change of a plurality of objects which outputs a detection signal when a relative angle of the objects changes excessively to not smaller than a predetermined value, and prevent the detection signal from being output wrong when the angle change-detecting apparatus is vibrated in a state not indicating the excessive change. SOLUTION: The detecting apparatus is provided with a substrate 7 which is set to one object 2 among a plurality of objects 2, 3 corresponding to each other, a swing arm 11 pivotally supported to the substrate 7 by a supporting means 10 in a manner to freely swing and set to the other object 3, and a sensor 22 fitted to the substrate 7. The swing arm 11 is coupled to the sensor 22. When a relative angleαof the substrate 7 and swing arm 11 changes to not smaller than a predetermined value, the sensor 22 outputs a detection signal.
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