CRANK MECHANISM IN PARTICULAR FOR A WEIGHING SENSOR ON A BALANCE WORKING ON THE ELECTROMAGNETIC FORCE COMPENSATION PRINCIPLE

摘要

The invention relates to a lever mechanism, particularly for a scale receiver of a scale that works on the principle of electromagnetic force compensation, with at least one lever (23), which is connected to a stationary base body (3) or an element connected to the latter, where the at least one lever arm is connected via an elastically deformable articulation (28), which defines a swivel axis of the at least one lever (23), to the base body (3) or to the element connected to it, and where, on a first lever arm of the at least one lever, a load force (FL) acts, which corresponds to the weight force (FG) or is derived therefrom, and which generates on a second lever arm of the at least one lever a reaction force (FR). According to the invention, the elastically deformable articulation (28) comprises two thin, elastically deformable bending areas (29), which connect the lever indirectly or directly to the base body (3) or to the element connected to it, where each bending area (29) is bendable in a direction that is vertical to a longitudinal extension plane defined by the geometry of the bending area (29), for the generation of a swivel motion of the at least one lever (23), where the longitudinal extension planes of the bending areas (29) enclose an angle (α) that is not equal to zero, and where a virtual swivel axis (D) of the at least one lever (29) [sic; (23)] is defined by the two elastically deformable bending areas (29).