Reinforced Trunk Hinge Mounting Structure for Rear Body Rigidity
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Solution Overview
Problem
Existing vehicle body structures lack sufficient rigidity reinforcement in the rear portion, particularly around the trunk hinge mounting area, which can lead to reduced structural integrity under increased load conditions, such as those encountered in rear-wheel drive electric vehicles.
Innovation Solution
A vehicle body structure with a reinforced trunk hinge mounting part is designed, featuring a side outer rear extension, a quarter inner, a trunk hinge, and a connection member that forms a load delivery path to improve the rigidity of the rear vehicle body portion. Additionally, a reinforcing member is bonded to the side outer rear extension to further enhance structural rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a reinforcing member is applied to the portion where the trunk hinge is mounted, then the rigidity of the mounting portion is improved, but the rigidity of the rear portion of the vehicle body is not sufficiently reinforced
Solution Approach 1:
The patent extends the reinforcement from a localized two-dimensional patch to a three-dimensional load delivery path that spans multiple structural components. The connection member creates a spatial network connecting the side outer rear extension to the quarter inner panel, distributing forces across multiple dimensions and achieving comprehensive rear portion rigidity enhancement.
Solution Approach 2:
The reinforcement system is divided into distinct functional segments: the connection member that spans the gap, the side outer rear extension that anchors to the trunk hinge mounting portion, and the quarter inner panel that provides structural support. This segmentation allows each component to be optimized for its specific function while working together to solve the overall rigidity problem.
2Ease of operation
If the trunk hinge is fastened to the vehicle body, then the trunk lid can be opened and closed, but the increased load in rear wheel drive electric vehicles reduces structural integrity
Solution Approach 1:
The connection member acts as an intermediary structural element that mediates between the trunk hinge mounting portion and the quarter inner panel. It transfers and distributes the increased loads from rear wheel drive electric vehicles across the vehicle body structure, preventing concentration of stress at the trunk hinge mounting point while maintaining operational functionality.
3Strength
If a reinforcing member is bonded to the side outer rear extension, then the rigidity of the extension is improved, but the complexity of the structure increases
Solution Approach 1:
The connection member is designed to merge multiple structural functions into a single integrated component. It simultaneously serves as a structural connector, a load distribution element, and a reinforcement for the side outer rear extension. This merging reduces the need for separate reinforcing members and simplifies the overall structural complexity.
Data Source
AI summary
A vehicle body structure with a reinforced trunk hinge mounting part includes a side outer rear extension 11 extending from a side outer 16 to the rear of a vehicle; a quarter inner 12 located under the side outer rear extension 11 and forming a space where wheels of the vehicle are mounted; a trunk hinge 31 installed on a front end of a trunk lid 30 and fastened to an outer surface of the side outer rear extension 11; and a connection member 35 connecting the side outer rear extension 11 to the quarter inner 12.