Actuating device for a battery operated module

DETAILED DESCRIPTION An object of the invention is to realize an actuating device which provides, by means of a push-button, a reliable electrical contact between one of the poles of a battery feeding the module and a terminal mounted on the surface of the module.
Another object of the invention is to ensure a sufficient sealing (watertight protection) of the case.
A further object of the invention is to provide a low cost actuating device comprising a very simple push-button with machining tolerances as large as possible; furthermore the drillings in the case for the push-button and the assembly of the device must be easily accomplished.
Still another object of the invention is to provide an actuating device which can be mounted on a metallic or a plastic case.
To achieve the above, a device is provided wherein the aforesaid push-button comprises at least one resilient section with a collar which, cooperating with an opening made in an element acting as a support for aforesaid return-spring, limits the travel of the push-button in one direction, the travel length being determined by a face of the push-button abuting against a terminal of said module, thus closing a circuit actuating a particular function of the electronic module.
Hereafter two embodiments of the invention are described with reference to FIGS.
1 and 2.