| 摘要 |
A vibration-free and noise-free electromechanical operating element of a switching device without any magnetic influence and with a low energy consumption has a membrane (32) (diaphragm) which can be moved on at least one side by heated air, acts on an operating plunger (16) and is located in a partially air-permeable housing (30, 31), and a heat-producing element in the form of a film resistor (33, 34) or a spark gap, which together heat the air. The prestressed, bistable membrane (32) divides the housing into two housing halves (30, 31) which are partially permeable to air. <IMAGE>
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