Vehicle Seat Structural Component Intermediate Body Connection
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Solution Overview
Problem
Existing vehicle seat structural components lack sufficient mechanical stability, especially under dynamic stress or crash conditions, and have limitations in manufacturing methods and connection design, which affect fatigue strength and torque transmission.
Innovation Solution
A vehicle seat structural component comprising a structural element, a transverse tube, and an intermediate body with a transverse tube supporting section that surrounds a protrusion, providing increased stability and fatigue strength through a reliable connection that can absorb forces and torque, allowing for the use of thin-walled tubes with larger diameters and improved manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a direct connection between structural element and transverse tube is used, then device complexity is reduced, but mechanical stability and fatigue strength are insufficient under dynamic stress or crash conditions
Solution Approach 1:
An intermediate body is introduced between the structural element and the transverse tube to create a reliable connection. The intermediate body includes a transverse tube supporting section with an inwardly extending first recess that receives the outwardly extending first protrusion of the transverse tube, forming an intermediary connection structure that enhances mechanical stability and fatigue strength while allowing for complex geometry that can absorb dynamic forces
2Stability of the object's composition
If a transverse tube with greater diameter is used, then structural stability is improved, but the wall thickness must be reduced which weakens the tube
Solution Approach 1:
The intermediate body acts as a mediator that allows the use of thin-walled tubes with larger diameters. By providing a supporting structure with the first recess that receives the first protrusion, the intermediate body compensates for the reduced wall thickness, enabling the transverse tube to have greater diameter for improved structural stability without compromising strength
Solution Approach 2:
The solution moves from relying solely on the tube wall thickness (one-dimensional strength) to a three-dimensional connection structure. The intermediate body creates a volumetric support system where the first recess and first protrusion form a multi-dimensional connection that distributes stresses and provides stability without requiring thick tube walls
3Strength
If a connection with greater supporting surfaces is realized, then mechanical stability and torque transmission are improved, but manufacturing complexity increases
Solution Approach 1:
The connection is segmented into distinct components: the structural element, the transverse tube with first protrusion, and the intermediate body with first recess. This segmentation allows each component to be manufactured separately with optimized geometries, and then assembled to form the complete connection with large supporting surfaces for improved torque transmission and mechanical stability
Data Source
AI summary
A vehicle seat structural component for a vehicle seat includes a structural element, a transverse tube and an intermediate body. The structural element includes an opening. The transverse tube includes an outwardly extending first protrusion. The transverse tube extends through the opening. The intermediate body connects the structural element and the transverse tube. The intermediate body includes a transverse tube supporting section including an inwardly extending first recess. The transverse tube supporting section is supported at the transverse tube such that the first protrusion extends into the first recess and the transverse tube supporting section surrounds the first protrusion.