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(11) | EP 1 729 312 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Transmission mechanism |
(57) The invention relates to a transmission mechanism and push-button module of a personal
electronic measuring device. The transmission mechanism comprises: a transmission
element for transmitting a pushing force provided by the user to an internal switch
of a personal electronic measuring device at the extreme switch position of the transmission
element; and a domed spring structure for directing a return force opposite to the
pushing force provided by the user to the transmission element, the domed spring structure
comprising support areas and being operationally connected from one support area to
the transmission element and from another support area to a structure supporting the
domed spring structure and having a collapsing phase that occurs close to the extreme
switch position and provides a sudden reduction in the return force which the user
can sense and which thus verifies the change in the state of the internal switch.
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