Vehicle Seat Belt Frame Layout for Crash Load Absorption
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Solution Overview
Problem
Existing passenger restraint systems in vehicles face challenges in achieving both technical and economic efficiency while meeting stability criteria, particularly during dynamic loading processes such as road traffic accidents, without obstructing vehicle furnishings.
Innovation Solution
A belt frame with a frame-like structure, comprising interconnected profiles and a restraint element, is designed to be attached to the vehicle structure, allowing for deformation under load and efficient force absorption, while being cost-effective and unobtrusive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the belt frame is designed with traditional attachment means only, then the structure is simple and easy to manufacture, but the stability and load absorption capability are insufficient
Solution Approach 1:
The belt frame is divided into multiple functional components: attachment means for securing to the vehicle structure, restraining elements for load absorption, and profiled frames for structural support. This segmentation allows each component to be optimized independently while maintaining overall stability without excessive complexity
Solution Approach 2:
The restraining elements are arranged at vertical distances from the attachment means, creating a three-dimensional load distribution system. This spatial arrangement enhances stability by distributing forces across multiple dimensions rather than relying solely on a single-plane attachment structure
2Strength
If more material is used to enhance load absorption, then the strength and safety are improved, but the weight and cost increase
Solution Approach 1:
The belt frame employs different profile configurations and material distributions in different areas. The attachment means and restraining elements are strategically positioned to provide maximum strength where loads occur, while other areas use optimized material quantities. This local optimization achieves high load absorption capability without uniformly increasing overall material usage and weight
Solution Approach 2:
The belt frame utilizes composite construction combining metallic profiles with restraining elements, creating a structure that leverages the strengths of different materials to achieve superior load absorption per unit weight compared to homogeneous material designs
3Stability of the object's composition
If the restraining element is positioned close to the attachment means, then the structure is compact, but the stability under dynamic load is reduced
Solution Approach 1:
The restraining elements are positioned at optimized vertical distances from the attachment means, creating a three-dimensional load distribution system. This spatial arrangement enhances stability by distributing forces across multiple dimensions, allowing the structure to better resist dynamic loads while maintaining a compact overall form factor
Solution Approach 2:
The restraining elements are pre-positioned at strategic vertical distances to provide advance load distribution and force absorption capability. This preemptive structural arrangement ensures that dynamic loads are efficiently managed from the outset, enhancing stability without requiring excessive structural length
Data Source
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AI summary
A belt frame for a vehicle seat or bench seat, wherein the belt frame has attachment means for mounting it to a vehicle structure in the area of the vehicle floor. The belt frame is characterized by the fact that it includes a restraint element, the restraint element being arranged on the belt frame at a vertical distance from the attachment means for mounting the belt frame to the vehicle structure, and the restraint element being designed to be positioned at an anchor point on the vehicle structure, wherein, in the installed state of the belt frame on the vehicle, the anchor point is located in an area behind the rear of the belt frame with respect to a direction of travel.