Electric switch, especially for electric hand tools

An electric switch for an electric hand tool, comprising

• (a) a housing defined by housing walls;
• one of said housing walls having a throughgoing aperture;
• (b) a contact assembly supported in said housing;
• (c) a movable actuating member for switching said contact assembly;
• (d) control electronics, including a power semiconductor, supported in said housing for controlling a motor of the electric hand tool;
• (e) a cooling body disposed externally of said housing;
• said cooling body having a throughgoing orifice in alignment with said throughgoing aperture of said housing wall;
• (f) a heat-conducting and electrically conducting carrier part supported in said housing and being electrically and heat-conductingly connected to said power semiconductor;
• said carrier part extending through said throughgoing aperture of said housing wall and said throughgoing orifice of said cooling body;
• said carrier part being oriented substantially perpendicularly to said cooling body and being in a heat-transferring contact therewith;
• and
• (g) fastening means for holding said cooling body against said housing wall;
• said fastening means including cooperating parts formed on said carrier part and said cooling body for directly affixing said cooling body to said carrier part by at least one of frictional engagement and form-fitting engagement.