Vehicle Tensile Bracing Lever for Tolerance Compensation
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Solution Overview
Problem
Existing vehicle bracing systems using tensioning cables face complexity in equalizing component-related and production-related tolerances, making it difficult to simplify the tensioning process and accurately adjust cable lengths.
Innovation Solution
A system featuring an elongate tensile element with a traction eyelet, a structurally fixed holder, and a tensioning device with an angled tensioning lever and a spring-elastic element, allowing for variable spacing and independent adjustment of the tensile element's tension, thereby compensating for length tolerances and maintaining the element's tautness during vehicle movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional truss-type frame constructions or cables are used to fasten installation elements to vehicle ceilings, then the installation elements can be linked to the vehicle structure, but it becomes complex to equalize component-related and production-related tolerances when linking the installation elements
Solution Approach 1:
The tensioning lever provides mechanical advantage to adjust the effective length of the tensile element, allowing compensation for manufacturing tolerances through controlled parameter changes in the bracing mechanism rather than requiring precise manufacturing of each component
Solution Approach 2:
The tensioning device acts as an intermediary mechanism between the structurally fixed holder and the installation element, mediating the connection and absorbing tolerance variations through its adjustable bracing action
2Reliability
If the bearing is fixed in position relative to the structurally fixed holder, then the structure is simpler, but the system cannot compensate for variations in tensile element length and maintain optimal tension under dynamic loads
Solution Approach 1:
The bearing is made displaceable along a defined path within the holder, transforming the static connection into a dynamic system that can adapt to varying loads and tolerance conditions while maintaining reliable tension
Solution Approach 2:
The holder structure is segmented into fixed and movable components, with the bearing separated from the fixed holder structure, allowing independent optimization of structural support and tension adjustment functions
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
The system simplifies the bracing process, effectively equalizes length tolerances, and maintains the tensile element's tension, ensuring precise bracing and stability regardless of vehicle deformation, with the spring-elastic element providing additional support during dynamic loads.
Implementation Method 1
a spring-elastic element, which is configured for pushing onto the tensioning face
Implementation Method 2
a pivot bearing being disposed therebetween
Data Source
AI summary
A system for bracing a tensile element in a vehicle has an elongate tensile element having a traction eyelet, a structurally fixed holder, and a tensioning device. The tensioning device has an angled tensioning lever having first and second leg portions with a pivot bearing disposed therebetween. The fixed holder has a bearing which for coupling to the traction eyelet is displaceable along a first direction. The tensioning lever by way of the pivot bearing is coupled to the holder. The first leg portion is coupled to the bearing such that the bearing by pivoting the tensioning lever is displaced in the holder. The second leg portion has a tensioning means which by displacing the bearing sets a variable spacing between the second leg portion and a tensioning face that faces the second leg portion.