| 摘要 |
The invention relates to a splashproof operating device ( 1 ), especially of a tachograph. A faulty seal often results in the entire apparatus breaking down because the fault remains undiscovered. The aim of the invention is to create an operating device ( 1 ) that ensures good functional safety and seals well towards the surroundings with the adjacent components. Said aim is achieved by an operating device in which contact areas ( 17 ) are elastically braced against each other. A decisive advantage of the inventive operating device consists of the fact that the abutting contact areas ( 17 ) of the operating element ( 9 ) are braced.
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