Filmic-type pressure sensitive switch e.g. for installing in vehicle seat cushion for occupant detection

摘要

A pressure sensitive switch comprising a first insulation film (1) on the upper surface, and an electrode plate. An insulation spacer (2), having one surface connected to the primary insulation film (1), comprises an opening (2a) connecting a vent (2x). A second insulation film (3), located on the surface of the switch along with an electrode plate (3a), is connected to the other surface of the spacer. A connection line (4) has primary and secondary lines which feed to the electrode plates, and an air passageway (1d) passes through the films (1,3) and is in contact with the ventilation unit (2x).