Cargo Space Well Structure With Overlapping Floor Reinforcement
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Solution Overview
Problem
Existing cargo space wells in motor vehicles face challenges in achieving high stability with low weight and manufacturing efficiency, particularly in the floor region, which is prone to flexure and requires additional reinforcement.
Innovation Solution
A cargo space well design comprising two tray parts with overlapping floor sections and non-overlapping side wall sections, connected by a frame structure, where the tray parts are rotated 90° relative to each other, providing enhanced reinforcement in the floor region while maintaining the same side wall strength and reducing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcing structures such as ribs are provided in the cargo space well floor to increase strength and reduce deflection under weight loading, then the strength and stiffness of the cargo space well are improved, but the weight of the cargo space well increases
Solution Approach 1:
The cargo space well is divided into multiple tray parts (first tray part, second tray part, third tray part) that are arranged in a stepped manner. This segmentation allows the structure to achieve the required strength through the stepped arrangement and overlapping floor sections without requiring additional reinforcing ribs, thereby avoiding increased weight.
Solution Approach 2:
Instead of adding reinforcing structures in the horizontal plane (which would increase weight), the invention utilizes the vertical dimension by arranging tray parts in a stepped configuration with overlapping floor sections. This dimensional approach provides structural strength and stiffness without adding horizontal reinforcing elements.
2Reliability
If the cargo space well is constructed with sufficient strength to withstand flexural loads on the floor region, then the stability and reliability are improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The cargo space well is segmented into multiple tray parts with different heights arranged in a stepped configuration. This segmentation simplifies manufacturing by allowing each tray part to be produced separately using standard injection molding processes, while the overall structure achieves the required stability through the stepped arrangement and overlapping sections.
Solution Approach 2:
The invention changes the geometric parameters of the tray parts by arranging them in a stepped configuration with specific overlapping relationships. The floor sections of adjacent tray parts overlap by a defined amount (5-20% of the tray part length), and the side wall sections are positioned at different heights. These parameter changes provide structural stability without requiring complex manufacturing processes.
Data Source
AI summary
A motor vehicle having a cargo space and a cargo space well bounding the cargo space, wherein the cargo space well includes at least two tray parts and a frame structure connected to the tray parts. The respective tray part includes a floor section and at least one side wall section extending from the floor section, wherein the tray parts are arranged in such a way that the floor sections overlap in the region of their main expansion surfaces. The side wall sections of the tray parts circumferentially bound the cargo space, wherein adjacent side wall sections of the tray parts are connected to one another.