Closure device for linearly displacing obturator in front of opening of case, has rotary actuator assuring linear displacement between opening and closing positions by controlling rotation of tracks

摘要

The device has a roller (14) integrated with an obturator (10) via a support part (22). Tracks comprise a soft inclined helical ramp along which the roller rolls during passage of the obturator from an opening position to a closing position, and comprise a flat part and a vertical ramp. An elastic element (20) is assembled between a case (12) and the support part, and is compressed during the passage of the roller on a part of the tracks. A rotary actuator (18) assures linear displacement between the opening and closing positions by controlling rotation of the tracks.