Remote-Drive Retractable Power Step for Vehicle Packaging
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Solution Overview
Problem
Existing retractable power step systems face packaging constraints due to limited space, particularly when a motor is directly mounted to the hinge link mechanism, restricting its location and orientation on vehicles.
Innovation Solution
The invention employs various drive mechanisms to remotely locate the motor from the drive shaft, allowing it to be positioned at a distance from the linkage, using bell crank, remote motor torque transfer shaft, remote motor flex shaft, or remote motor push/pull cable types, which transfer rotational force to the drive shaft through different mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a power step is integrated into a vehicle, then convenience for loading/unloading cargo and passengers is improved, but vehicle theft risk increases due to exposed remote controls
Solution Approach 1:
The patent extracts the power step from its fixed position and makes it retractable into the vehicle body, removing the exposed remote control functionality that attracted thieves while maintaining the convenience benefit when needed
Solution Approach 2:
The power step transitions from a static exposed component to a dynamic retractable component that can move between extended and retracted positions, allowing the system to adapt between providing convenience and preventing theft vulnerability
2Object-affected harmful factors
If a retractable power step is implemented, then theft risk is reduced by hiding the remote, but additional mechanical complexity is introduced
Solution Approach 1:
The patent combines the power step mechanism with the vehicle's existing power system and control architecture, integrating the retractable functionality into the overall vehicle control system rather than adding completely separate complex subsystems
Solution Approach 2:
The power step system serves multiple functions: it provides cargo loading assistance when extended, acts as a theft deterrent when retracted, and integrates with existing vehicle power and control systems, maximizing utility while minimizing added complexity
3Object-affected harmful factors
If the power step is made retractable into the vehicle, then security is improved, but the time required for deployment and retraction is added
Solution Approach 1:
The power step is pre-positioned within the vehicle body and can be rapidly deployed when needed, eliminating the time required to assemble or position the component from scratch while maintaining security when retracted
Data Source
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AI summary
The present invention includes a foldable step assembly for a vehicle. The step assembly includes a linkage arrangement for connection to a vehicle and articulating a step assembly from a deployed position to a stowed position. A drive mechanism is positioned remotely from the step assembly and is operatively in communication with the linkage arrangement for articulating said step assembly between the deployed position to the stowed position.