Force-transmitting mechanism with a separate lever arm extending to a position sensor

A mechanism for transmitting force in a force-measuring device based on the principle of electromagnetic force compensation, the mechanism comprising:

• a parallel-motion guide mechanism with a movable parallel leg, a stationary parallel leg, and at least two parallel-guiding members;
• flexure pivots that connect the parallel legs and the parallel-guiding members to each other, with the movable parallel leg constrained to the stationary parallel leg in guided mobility by the parallel-guiding members;
• a force-transmitting lever that is pivotally supported on a fulcrum pivot arranged on the stationary parallel leg with a first lever arm having a force-transmitting connection to the movable parallel leg by way of a coupling member, and a second lever arm to which a measurement transducer can be attached through a force-transmitting connection;
• wherein the second lever arm comprises a first partial lever arm and a second partial lever arm, the respective partial lever arms being separated from each other over a lengthwise extension thereof, up to a vicinity of the fulcrum pivot, such that the first partial lever arm receives the compensation force generated by the measurement transducer and transmits the compensation force to the movable parallel leg, and the second partial lever arm detects a displacement of the pivotally supported force-transmitting lever from a null reference of a position sensor.