Sliding Door Internal Lining Stiffness Weight Trade-off
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sliding side door internal linings and reinforcement elements fail to optimize the performance and force transmission between the internal and external skins while increasing the vehicle's weight, leading to suboptimal vibration reduction and impact absorption.
Innovation Solution
An internal lining with a one-piece design featuring a strap and a reinforcing spacer with upper and lower wings, which are integral with the strap and support zones for secure attachment to the external skin, enhancing stiffness and force distribution while minimizing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcing elements are added to the internal lining, then the stiffness and force transmission performance improve, but the weight of the vehicle increases
Solution Approach 1:
The internal lining is segmented into distinct functional zones: a strap portion for general structural support, a reinforcing spacer with multiple support zones for enhanced stiffness, and opening portions for weight reduction. This segmentation allows each zone to be optimized for its specific function, providing reinforcement only where needed rather than uniformly throughout the entire lining.
Solution Approach 2:
The reinforcing spacer creates localized areas of high stiffness at the support zones where it contacts the outer skin, while the rest of the internal lining remains lighter. The strap has a specific geometry with openings positioned to provide local reinforcement at critical areas without adding excessive weight throughout the entire structure.
2Object-affected harmful factors
If the internal lining is made thicker or more rigid, then vibration reduction and impact absorption improve, but the weight increase
Solution Approach 1:
The internal lining is divided into a strap portion and a reinforcing spacer with multiple support zones, allowing vibration damping and impact absorption functions to be concentrated at specific locations rather than requiring uniform thickness throughout the entire lining.
Solution Approach 2:
The internal lining combines different structural elements (strap, reinforcing spacer with support zones, and opening portions) into a composite structure that provides enhanced vibration and impact resistance through strategic placement of reinforcing features rather than uniform material distribution.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to an internal lining (6) of a sliding side door (3) of a vehicle (1), characterized in that it comprises an upper portion (6a) and a lower portion (6b), the lower portion (6b) comprising: - two openings (8a, 8b), - a strap (9), separating the openings (8a, 8b), and - a reinforcing spacer (12), integral with said strap (9), comprising a set of support zones (14a, 14b) intended to bear against and be fixed to an external skin (5) of the sliding side door (3), the internal lining (6) and the reinforcing spacer (12) being made in a single piece.