Seat Belt Anchor Sidewall Layout for Rigid Lightweight Floor Panels
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Solution Overview
Problem
The existing vehicle structure with an anchor unit struggles to secure rigidity against tensile loads from seat belts, leading to potential deformation of the floor panel, and increasing rigidity may result in increased vehicle weight.
Innovation Solution
A vehicle structure with an anchor unit where the anchor member is connected to a floor panel with a wall portion extending upward/downward, allowing the tensile load to be applied in a shearing direction, enhancing rigidity without increasing weight, and additional features like raised portions, stiffeners, and bead portions are used to distribute and support the load effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the rigidity of the seat placing portion is increased to prevent deformation under tensile load, then the support rigidity of the seat belt is improved, but the vehicle weight increases
Solution Approach 1:
The patent changes the attachment orientation from vertical (perpendicular to floor panel) to horizontal (parallel to floor panel) by utilizing the side surface of the raised portion. This dimensional change allows the tensile load to be transferred to the reinforcement member without requiring increased vertical rigidity of the seat placing portion, thus avoiding weight increase while maintaining support rigidity
Solution Approach 2:
The reinforcement member acts as an intermediary element that transfers the tensile load from the anchor attachment portion to the floor pan. By introducing this intermediate load transfer path, the patent avoids the need to increase the rigidity of the seat placing portion itself, thereby preventing weight increase while ensuring adequate support rigidity
2Stability of the object's composition
If the anchor attachment portion is attached to the seat placing portion via reinforcement member, then the position stability of anchor member is improved, but the floor panel deformation occurs under vertical tensile load
Solution Approach 1:
The patent utilizes the asymmetric geometry of the raised portion with its side surface oriented perpendicular to the vehicle width direction. This asymmetric configuration allows the anchor attachment portion to be positioned such that tensile loads are applied horizontally to the side surface, converting vertical loading into shear loading that the raised portion can resist without deforming the floor panel
Data Source
AI summary
A vehicle structure with an anchor unit includes a floor panel, a left anchor member and a right anchor member. The floor panel is disposed below a rear seat. The left anchor member and the right anchor member are connected to the floor panel by a left anchor attachment portion and a right anchor attachment portion. The floor panel has a left raised sidewall and a right raised sidewall extending in an upward/downward direction, and the left anchor attachment portion and the right anchor attachment portion are provided on the left raised sidewall and the right raised sidewall.