Rear Bumper Support Ramp to Protect Vehicle Rear Panels
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Solution Overview
Problem
The rear panel of a motor vehicle is vulnerable to deterioration during a rear shock, particularly due to longitudinal reliefs on the bumper that can impact the rear panel.
Innovation Solution
A guidance ramp is integrated into the bumper support, which redirects any longitudinal reliefs on the bumper away from the rear panel during a shock, ensuring they do not impact the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the bumper includes longitudinal reliefs extending towards the rear panel, then the bumper structure is simplified and manufacturing is easier, but the rear panel is vulnerable to damage during rear impact
Solution Approach 1:
A guide ramp is introduced as an intermediary element between the bumper relief and the rear panel. The ramp redirects the relief's movement path during impact, guiding it away from the rear panel to prevent damage while maintaining the original bumper structure with reliefs
Solution Approach 2:
The guide ramp adds a new spatial dimension to the impact management system. By creating an inclined surface at an angle to the original impact direction, it redirects the relief's force vector away from the rear panel, effectively using dimensional redirection to resolve the contradiction
2Object-affected harmful factors
If reinforcement means are added to the rear panel in areas attached to the bumper assembly, then the rear panel protection is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The bumper relief itself serves a dual function: it maintains its original structural role in the bumper assembly while simultaneously acting as a guided element that protects the rear panel during impact. The relief's own movement, when redirected by the guide ramp, becomes the protection mechanism rather than requiring separate reinforcement components
Solution Approach 2:
The harmful impact function is extracted from the relief and redirected away from the rear panel. Instead of trying to strengthen the rear panel to resist impact, the solution extracts the impact force and redirects it through the guide ramp to a safe path, eliminating the need for additional reinforcement means
Data Source
Figure 1
Figure 2(a)~2(c)
AI summary
The invention relates to a device for protecting a rear panel (2) that comprises a motor vehicle bodywork subassembly, further comprising a bumper (1) and a support (6) for supporting the bumper (1), which extends longitudinally between a wing (7) of the rear panel (2) and a wall (8) of the bumper (1). The bumper (1) comprises at least one protrusion (11) which projects longitudinally towards the rear panel (2). The support (6) is provided with a ramp (12) against which the protrusion (11) is able to bear and to be guided offset from the rear panel (2) under the effect of an impact received by the bumper (1).