Rear Panel Extension Structure for Larger Vehicle Luggage Rooms
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Solution Overview
Problem
Conventional vehicle rear portion structures face challenges in balancing luggage room space, safety, convenience, and manufacturing cost, particularly due to the need for large falling prevention members that restrict space and increase costs when the rear panel height increases.
Innovation Solution
A vehicle rear portion structure design that incorporates a rear panel with a front extension portion and a rear in-panel connected to form a vehicle width direction side surface, eliminating the need for separate falling prevention members by distributing load through these extensions, allowing for increased luggage room space and improved rigidity without additional costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a falling prevention member is provided on the rear panel to prevent falling during rear collision, then vehicle safety is improved, but the luggage room space is restricted and manufacturing cost increases
Solution Approach 1:
The patent merges the falling prevention function into the rear panel structure itself by adding a front extension portion that connects to the rear in-panel. This integration eliminates the need for separate falling prevention members, thereby maintaining safety while preserving luggage room space and reducing manufacturing cost.
Solution Approach 2:
The rear panel is designed to serve multiple functions: it provides the structural boundary of the luggage room and simultaneously acts as a falling prevention mechanism through its front extension portion. This multi-functionality resolves the contradiction by making the safety feature inherent to the panel structure rather than an additional component.
2Reliability
If the height of the rear panel is increased to match high luggage room height, then the falling prevention capability is improved, but the luggage room space is further restricted
Solution Approach 1:
Instead of increasing the vertical height of the rear panel for falling prevention, the patent extends the panel in the front-rear direction through the front extension portion. This dimensional shift allows falling prevention functionality to be achieved without compromising the vertical space available for luggage storage.
3Reliability
If a separate falling prevention member is provided, then the rear panel falling is prevented, but the device complexity and manufacturing cost increase
Solution Approach 1:
The falling prevention function is merged into the rear panel structure itself through the front extension portion, eliminating the need for separate falling prevention members. This integration reduces structural complexity and manufacturing cost while maintaining the falling prevention capability.
Data Source
AI summary
A rear panel extending in a vehicle width direction at a rear portion of a vehicle, and a rear in-panel extending in a vehicle front-rear direction on a vehicle width direction side surface of the rear portion of the vehicle are provided. The rear panel includes: a rear panel body extending in the vehicle width direction, and a front extension portion bent and extended from an outer side of the rear panel body in the vehicle width direction toward a front side. The front extension portion and the rear in-panel are connected to form a side surface of a luggage room.