Safety device for an automatic window opening and closing mechanism

摘要

There is disclosed a safety device for an automatic window opening and closing mechanism which includes first catch detecting means (50) for detecting an foreign object caught in a window pane (1) when a relative velocity detected by relative velocity detecting means (38) is greater than a first reference value, with the window pane (1) lying in a safety control range; second catch detecting means (52) for detecting the foreign object caught in the window pane (1) when a plurality of successive changes in closing velocity of the window pane (1) are detected and the sum of the amounts of changes calculated by calculating means (51) is greater than a second reference value, with the window pane (1) lying in the safety control range; operation instructing means (35) for applying a catch release instruction to a motor driving circuit (42) in response to a detection result of the first or second catch detecting means (50 or 52) to drive a motor (9) in an opening direction for release of catch of the foreign object in the window pane (1), thereby ensuring stable detection of the foreign object, if it is a soft object, to prevent the foreign object from being caught in the window pane (1).