Motor Vehicle Floor Structure with Interlocking Extruded Profiles
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Solution Overview
Problem
Existing motor vehicle floor structures lack stability in all directions and effective sound absorption.
Innovation Solution
A body structure for a motor vehicle floor using sandwich components with two panel-like extruded profiles connected via 90-degree rotated T-shaped ribs and interlocking structures, incorporating metal foam or honeycomb structures for sound absorption and adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sandwich components with foam are used in motor vehicle floors, then sound absorption is improved, but stability in all directions deteriorates
Solution Approach 1:
The floor structure is divided into multiple sandwich components, each comprising two panel-like extruded profiles with T-shaped ribs. These segmented components are arranged in a grid pattern with interlocking connections, providing stability in both longitudinal and transverse directions while maintaining sound absorption properties through the foam filling.
2Ease of manufacture
If simple connection methods are used for floor panels, then ease of manufacture is improved, but stability in longitudinal and transverse directions deteriorates
Solution Approach 1:
The T-shaped ribs from perpendicular extruded profiles are merged through interlocking connections, where the flange of one T-shaped rib engages with the web of another. This combining of structural elements from different directions creates a unified stable structure that resists forces in both longitudinal and transverse directions while maintaining manufacturing simplicity.
3Strength
If foam is introduced between extruded profiles, then adhesive bonding is achieved, but structural complexity increases
Solution Approach 1:
The foam is introduced and allowed to foam up before the extruded profiles are fully connected in their final position. This preliminary action of foam expansion creates the adhesive bonding between profiles beforehand, simplifying the subsequent assembly process and reducing the overall structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides enhanced stability in both longitudinal and transverse directions while achieving sound absorption, ensuring a firm and stable motor vehicle floor.
Implementation Method 1
A foam, a metal foam or a honeycomb structure may be introduced into cavities between the panel-like extruded profiles to achieve sound absorption
Implementation Method 2
The foam may be introduced and foamed up before the connecting position is taken up
Data Source
AI summary
The floor of a vehicle has two planar extruded profiles, located one on top of the other and having opposing T-shaped ribs rotated through 90 degrees with respect to one another. T-shaped recesses are introduced into ribs of one profile, and crosspieces on T-shaped ribs of the opposite extruded profile engaging in an interlocking manner. The extruded profiles are pushed into one another for connection, and a foam is introduced beforehand into the cavities between the ribs. The foam is foamed up so that the two extruded profiles are connected in an adhesively bonded manner.