Tolerance Compensation Fastener With Screw Centering Under High Torque
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Solution Overview
Problem
Existing devices for tolerance compensation in the automotive industry face issues with reliable and quick fastening, as driver devices are prone to damage under high forces during assembly, leading to production stoppages when proper fastening is not achieved.
Innovation Solution
Incorporating a centering element within the passage of the compensating element to ensure central screw insertion, combined with a spring clamp driver device and form-fit connections between components to prevent slipping and ensure secure rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver device is designed to handle high forces during screw insertion, then reliable fastening is achieved, but the device becomes more complex and prone to damage
Solution Approach 1:
A centering element is introduced as an intermediary component between the screw and the driver device. This centering element aligns the screw during insertion, ensuring that the driver device does not bear eccentric loads or tilting forces. By mediating the interaction between the screw and driver device, the centering element protects the driver device from damage while maintaining reliable fastening capability.
2Productivity
If the screw insertion process is quick and simple, then productivity increases, but the risk of screw misalignment and driver device damage increases
Solution Approach 1:
The centering element performs the alignment function preliminarily, before the screw engages with the driver device. By pre-aligning the screw in the radial direction, the centering element ensures that subsequent insertion proceeds smoothly without misalignment issues. This preliminary alignment action enables quick assembly while maintaining high reliability of screw positioning.
3Strength
If the driver device is made robust to withstand high forces, then damage during assembly is prevented, but the device complexity and manufacturing cost increase
Solution Approach 1:
The centering element serves as a protective intermediary that prevents eccentric and tilting forces from reaching the driver device. Instead of making the driver device itself more robust and complex, the centering element absorbs and redirects the alignment-related forces, allowing the driver device to maintain a simpler, more economical structure while still withstanding the necessary operational forces.
Data Source
AI summary
A device for fastening to a component having a base body and a compensating element, wherein the compensating element is connected to the base body via a thread, and wherein the compensating element has a passage with a driver device for a screw. At least one centering element for aligning the screw is formed in the passage.