Tilted Vertical Strut Belt Frame for Vehicle Seat
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Solution Overview
Problem
Existing passenger restraint systems in vehicles face challenges in balancing cost-effectiveness with safety and stability criteria, particularly in dynamic loading scenarios, and require designs that meet stringent regulatory standards while optimizing vehicle space usage.
Innovation Solution
A belt frame design featuring a vertical strut attached to the vehicle floor with a restraining element at one end, where the strut's longitudinal axis is tilted relative to the vehicle floor, allowing for a compact and cost-effective structure that can absorb and distribute forces during dynamic loading, incorporating a horizontal strut and support elements for enhanced stability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the vertical strut is designed to extend in a straight line perpendicular to the vehicle floor, then the structural simplicity and ease of manufacture are improved, but the vehicle space utilization deteriorates
Solution Approach 1:
The vertical strut is tilted at an angle between 5-45 degrees relative to the perpendicular direction, transitioning from a purely vertical orientation to an angled orientation. This dimensional change allows the strut to utilize diagonal space in the vehicle, improving space utilization while maintaining structural integrity and ease of manufacture.
2Reliability
If the belt frame is designed with additional support elements and horizontal struts, then the stability and safety criteria are improved, but the device complexity increases
Solution Approach 1:
The belt frame is segmented into distinct functional components: mounting element, vertical strut, horizontal strut, and support elements. Each segment performs a specific function (mounting, load transmission, lateral support, vertical support), allowing the complex structure to be designed and manufactured modularly, thereby managing complexity while achieving high reliability.
Solution Approach 2:
Different parts of the belt frame have optimized local properties: the mounting element is designed for secure attachment to the vehicle floor, the vertical strut for axial load bearing, the horizontal strut for lateral stability, and support elements for additional reinforcement. This localized optimization achieves high overall reliability without requiring uniform complexity throughout the entire structure.
3Volume of moving object
If the vertical strut is tilted at an angle relative to the perpendicular direction, then the vehicle space utilization is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The tilt angle is defined as a variable parameter within a specific range (5-45 degrees) rather than a fixed value. This allows manufacturers to select angles that are easiest to achieve with their specific manufacturing capabilities, while still obtaining the space utilization benefits of tilting. The performance requirements are specified in terms of acceptable angle ranges rather than precise single values.
Data Source
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Figure 6
AI summary
A belt frame (1, 12, 20, 28, 36, 39) for a vehicle seat or a vehicle bench seat in a vehicle, wherein the belt frame comprises a mounting element (13, 22, 30, 41) and a vertical strut (4, 21, 29, 35, 40), wherein the mounting element is designed to be arranged on a vehicle structure of the vehicle in the area of a vehicle floor (2) so that the belt frame can be fixed in the area of the vehicle floor, wherein the vertical strut is connected to the mounting element at a first end (5) of the vertical strut, wherein the vertical strut has a second end, wherein a restraint element (8) of a occupant restraint system (6) is formed in the area of the second end of the vertical strut, wherein the second end of the vertical strut is spaced apart from the first end of the vertical strut, and wherein a longitudinal axis of the vertical strut extends from the first end of the vertical strut to the second end the vertical strut runs,wherein the vertical strut runs in a straight line from the first end to the second end, wherein, in the arranged state of the belt frame on a vehicle floor of the vehicle, the longitudinal axis of the vertical strut is tilted relative to the normal of a plane of the vehicle floor.