L-Shaped Seat Raiser With Offset Welding Points
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Solution Overview
Problem
Existing seat raisers for motor vehicle seats are heavy and costly, compromising weight and cost savings while maintaining load-carrying capacity and ease of assembly/disassembly.
Innovation Solution
A seat raiser with an L-shaped cross-section featuring two spaced welding points for attaching the seat rail and a fastening portion for attaching to the vehicle floor, allowing for reduced dimensions and weight while maintaining stability and ease of assembly, with the welding points offset to compensate for tilting moments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional seat raiser designs are used, then load-carrying capacity is maintained, but weight and cost increase
Solution Approach 1:
The seat raiser is divided into two functional legs: a welding portion for attaching to the seat rail and a fastening portion for attaching to the vehicle floor. This segmentation allows each portion to be optimized for its specific function, reducing overall material usage while maintaining structural integrity and load-carrying capacity.
Solution Approach 2:
The seat raiser employs an asymmetric L-shaped cross-section where the welding portion and fastening portion have different geometries and dimensions. The welding portion extends in a first direction with specific dimensions optimized for welding attachment, while the fastening portion extends in a second direction with dimensions optimized for floor mounting. This asymmetric design eliminates unnecessary material while preserving strength.
2Reliability
If multiple welding points are provided, then fixation stability is improved, but mounting effort and complexity increase
Solution Approach 1:
The invention extracts the essential fixation requirement to its minimum effective form: exactly two welding points. This is sufficient to provide stable fixation of the seat rail to the seat raiser without the complexity of multiple welding points, thereby reducing mounting effort while maintaining reliability.
3Stability of the object's composition
If fastening point is deeply positioned, then structural integrity is improved, but accessibility for assembly/disassembly worsens
Solution Approach 1:
The fastening portion is designed to extend in a second direction that is transverse to the direction of the welding portion, creating an L-shaped configuration. This dimensional arrangement allows the fastening point to be positioned optimally for structural integrity while remaining easily accessible from the side for assembly and disassembly operations.
Data Source
AI summary
A seat raiser for spacing a seat rail of a motor vehicle seat from a vehicle floor is provided. The seat raiser comprising a welding portion which includes at least one specified welding point and is formed and provided to weld the seat rail to the seat raiser at the welding point and a fastening portion which includes at least one specified fastening point and is formed and provided to fasten the seat raiser to the vehicle floor at the fastening point. The seat raiser is formed substantially L-shaped in cross-section and the welding portion and the fastening portion each form a leg of the L-shape. The welding portion includes exactly two specified welding points spaced from each other, via which the seat raiser is to be welded to the seat rail.