Actuating Arm Drive Lever Compensation
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Solution Overview
Problem
Existing actuating arm drives with levers connected in an articulated manner face challenges in achieving high precision and accuracy without increased material usage and space requirements, often requiring compromises in production precision and time.
Innovation Solution
The actuating arm drive design features first and second levers arranged in parallel with lateral spacing, each with two axle holes of a standard spacing, and a third lever with receivers for the axle pins, where the second standard spacing differs from the first, allowing for stabilization and compensation of production deviations, enabling a play-free assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual parts are manufactured with high precision and accuracy to achieve high-quality action without play, then manufacturing quality improves, but production time and manufacturing cost increase
Solution Approach 1:
The invention uses standard axle pins with deliberately larger tolerances instead of precision-machined custom pins. These standardized components are manufactured more quickly and cheaply, accepting that they will have some play which is then compensated by the elastic deformation of the third lever to achieve the required assembly precision without tight manufacturing tolerances on individual parts
Solution Approach 2:
The invention changes the tolerance parameters of the axle pins and axle holes from tight tolerances to loose tolerances, allowing for faster, less expensive manufacturing. The precision requirement is then shifted to the assembly level through the elastic compensation mechanism of the third lever, which adapts to accommodate the varied dimensions of standard components
2Stability of the object's composition
If complicated connections between individual levers are used to stabilize the assembly, then assembly stability improves, but material usage and space requirements increase
Solution Approach 1:
The third lever acts as an intermediary component between the first and second levers. Instead of creating complicated direct connections between multiple levers to achieve stability, the third lever mediates by elastically deforming to compensate for dimensional variations in standard axle pins and holes, thereby stabilizing the assembly with a simple, elegant intermediate element rather than complex multi-lever connections
Solution Approach 2:
The third lever is designed with elastic flexibility, allowing it to deform and adapt to the actual dimensions of standard components. This flexible approach provides assembly stability without requiring rigid, complex connections, thereby reducing material usage compared to stiff, over-engineered alternative designs
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves a stable and compact assembly with reduced material usage and space requirements while maintaining high precision and accuracy, ensuring easy assembly and movability of the actuating arm drive.
Implementation Method 1
the third lever is formed elastically resilient. The third lever can thereby be deformed to at least partially receive the axle pins respectively passing through the axle holes of the first lever and of the second lever. A spring force thereby exerted on the axle pins can advantageously result in a play-free bracing of the assemblage of the levers.
Data Source
AI summary
An actuating arm drive for a pivotably mounted actuating arm, in particular for driving a flap of a piece of furniture, includes a plurality of articulatedly interconnected levers. A first lever and a second lever of the actuating arm drive are arranged parallel to one another with a lateral spacing, and the levers each have two axial bores with a first standard spacing, through each of which bores an axial pin projects. A third lever has receptacles for the axial pins with a second standard spacing, and the second standard spacing is different than the first standard spacing. The axial pins each project through the axial bores of the first and second lever and are at least partially received in the receptacles of the third lever.