Tolerance Compensation Fastener with Form-Fit Ring Under High Torque
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Solution Overview
Problem
Existing devices for tolerance compensation in the automotive industry face issues with reliable fastening under high forces and torques, leading to potential damage and production stoppages if not properly secured.
Innovation Solution
A device with a base body and compensating element connected via a thread, featuring a form fit between the base element and retaining ring, along with centering elements and a spring-like driver device for secure screw alignment and rotation, preventing separation and damage during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a force fit is used to fix the base element and retaining ring together, then the device can be manufactured simpler, but the components may separate from each other under high torques during assembly
Solution Approach 1:
The base body is divided into two separate components: a base element and a retaining ring. These segmented parts are connected through a form fit connection with complementary geometric features (protrusions and recesses), allowing them to remain firmly connected under high torques while still being manufacturable using standard processes.
Solution Approach 2:
The form fit connection utilizes asymmetric geometric features including protrusions on one component and complementary recesses on the other. This asymmetric design creates a mechanically interlocked connection that prevents separation under torque while maintaining manufacturing simplicity through standard forming processes.
2Ease of operation
If the screw is not perfectly aligned with the passage during insertion, then the assembly process may be more flexible, but the screw may tilt on the driver device and cause damage
Solution Approach 1:
Centering elements are provided in the passage to preliminarily align the screw with the passage axis during insertion. These centering features guide the screw into the correct position before the main fastening action occurs, preventing tilting and damage to the driver device while maintaining assembly flexibility.
Data Source
AI summary
The present disclosure relates to a device for fastening to a component, comprising a base body and a compensating element, the compensating element being connected to the base body via a thread, and the compensating element having a passage with a driver device for a screw. The base body has a base element and a holding ring which is connected to the base element in a form-fitting manner.