Furniture Actuator Arm Drive with Curved Contact Contour

The contact contour on the main lever is designed as a curved surface instead of a straight line or point. This curved contact contour allows the force introduction element to move along an arc-shaped path, providing a larger adjustment range for the force application point while maintaining a simple adjustment mechanism. The curvature enables continuous variation of the force application position without requiring complex discrete adjustment mechanisms.

A force introduction element is introduced as an intermediary component between the actuator arm and the main lever. This element mediates the force transmission by contacting the curved surface of the main lever at variable positions. The force introduction element simplifies the adjustment mechanism by allowing continuous force application point variation through its movement along the contact contour, eliminating the need for complex discrete adjustment mechanisms.

The contact contour is designed with a specific curvature radius that balances the adjustment range with manufacturability. The curved surface provides continuous adjustment capability while the radius is chosen to be large enough to reduce the stringency of manufacturing tolerances. This allows the force introduction element to move along the contour with acceptable precision without requiring ultra-precise manufacturing.

The curvature radius of the contact contour is optimized as a design parameter to achieve the desired compromise between adjustment range and manufacturing precision. By selecting an appropriate radius value, the system achieves sufficient adjustment range while keeping the manufacturing tolerances within practical limits. The parameter optimization allows the curved contour to provide continuous adjustment without excessive precision requirements.

The curved contact contour is specifically shaped to maintain favorable loading conditions throughout the adjustment range. The curvature is designed so that the force introduction element always contacts the main lever in a way that avoids impact loads and unfavorable stress concentrations. This eliminates noise generation while preserving the ability to adjust the drive force by changing the force application point along the curved contour.

The geometry parameters of the contact contour are optimized to maintain consistent and favorable loading conditions across all positions of the force introduction element. By carefully selecting the curvature radius and profile of the contact contour, the system ensures that the force transmission remains smooth and noise-free throughout the entire adjustment range, while still allowing continuous variation of the drive force.