Deployable Bumper Step Assembly for One-Step Cargo Access
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Solution Overview
Problem
Existing deployable step assemblies for accessing vehicle cargo spaces often require multiple manipulations to transition to a use position, which can be cumbersome and inefficient.
Innovation Solution
A deployable step assembly that is pivotable back-and-forth between a stowed position and a deployed position, where the step pad is received within a bumper pocket in the stowed position and becomes rearward and vertically lower than the bumper in the deployed position, allowing for easy access to cargo spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing deployable step assemblies are used, then cargo space access is enabled, but multiple manipulations are required to transition to use position
Solution Approach 1:
The step assembly utilizes the user's own body weight and the mechanical advantage of the pivot mechanism to automatically transition from stowed to deployed position. When the user steps on the step, their weight automatically triggers the deployment sequence without requiring separate manual manipulation steps
Solution Approach 2:
The step assembly transitions from a static stowed position to a dynamic deployed position through a pivot mechanism. The system is designed to be dynamically responsive to user interaction, automatically adjusting its configuration based on the applied force and position
2Ease of operation
If the step assembly is always deployed, then cargo space access is easy, but it occupies space and may interfere with bumper functionality
Solution Approach 1:
The step assembly is nested within the bumper structure when in the stowed position. The step components are recessed into the bumper, utilizing the existing bumper geometry to house the step mechanism without occupying additional external space
Solution Approach 2:
The step assembly transitions between static (stowed) and dynamic (deployed) states based on user need. When not in use, the step remains concealed within the bumper, maintaining a clean exterior profile while being readily deployable when required
Data Source
AI summary
A vehicle assembly includes a bumper of a vehicle and a deployable step assembly that is pivotable back-and-forth between a stowed position and a deployed position relative to the bumper. When in the stowed position, a step pad of the deployable step assembly is received within a bumper pocket of the bumper. When in the deployed position, the step pad is rearward and vertically lower than the bumper.