Patent ID: 6472618
Filing Date: 2002-10-29
Classification: G01G

Abstract:
An electronic weighing scale using an integral block member constituted to operate as a Roberval mechanism or an elastic body of a load cell, the integral block member including:a load receiving portion for receiving a load of a scaled object, a fixing portion for fixing the block member as a whole, and a Roberval portion formed by a space portion defining thinned portions between the load receiving portion and the fixing portion for operating as a Roberval mechanism, a load transmitting beam connected to the load receiving portion by a force transmitting member defining a force point of the load transmitting beam and a fulcrum member acting as a fulcrum of the load transmitting beam, the load transmitting beam, the force transmitting member and the fulcrum member being formed separately from the block member, and a member attachment portion constituting a fulcrum and a force point being formed integrally with the block member such that the fulcrum or force point of the load transmitting beam is positioned in the space portion or closely to the space portion, thereby constituting the electronic weighing scale.