Multi-Panel Liftgate Assembly With Adjustable Opening Height
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Solution Overview
Problem
Existing liftgate systems in SUVs lack flexibility in opening control, often requiring the entire liftgate to be opened, which is inconvenient and can lead to damage from obstacles. Additionally, these systems do not provide secure, multi-way access to the rear cargo area.
Innovation Solution
A multi-way liftgate assembly that divides the rear cargo area into secure compartments, allowing controlled access through multiple panels, and includes an on-demand open height adjustment feature, enabling users to specify the opening height of the liftgate externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the entire liftgate is opened to access the rear compartment, then access to the cargo area is provided, but damage may occur from obstacles and convenience is reduced
Solution Approach 1:
The liftgate is divided into multiple independent panels (first panel, second panel, third panel) that can be opened separately to different degrees. This segmentation allows selective access to different portions of the cargo area without requiring the entire liftgate to be opened, thereby preventing damage from obstacles while maintaining operational flexibility.
2Ease of operation
If standard liftgate opening systems are used, then the liftgate can be opened, but position control is limited and requires manual settings inside the vehicle
Solution Approach 1:
A control system with multiple controls (first control, second control, third control) is provided, each associated with a specific panel. These controls act as intermediaries between the user and the panel mechanisms, enabling independent position control of each panel. This allows users to select desired opening positions without complex internal manual settings, simplifying the user interface while maintaining precise control.
3Adaptability or versatility
If the liftgate is designed to open fully, then maximum access is provided, but secure multi-way access to different cargo areas is not achieved
Solution Approach 1:
The cargo area is divided into multiple secure areas corresponding to different panels. Each panel can be opened independently to provide secure access to specific compartments while keeping other areas locked. This segmentation enables the vehicle operator to control which portions of the cargo area are accessible to different users, achieving both security and operational flexibility.
Solution Approach 2:
The liftgate system provides multiple functions: full opening for maximum access, partial opening for selective access, and independent panel control for secure multi-user access. Each panel can serve different security zones, making the system versatile for various access scenarios without requiring separate systems.
4Strength
If robust hinging and locking mechanisms are used for large liftgate doors, then structural strength is improved, but the doors become heavy and slow to open and close
Solution Approach 1:
The large liftgate is segmented into multiple smaller panels with separate hinging and locking mechanisms. Each panel is lighter and requires less force to move, enabling faster opening and closing speeds. The robust strength requirements are distributed across multiple smaller mechanisms rather than concentrated in a single large mechanism, maintaining overall structural strength while improving speed.
Data Source
AI summary
A multi-way liftgate assembly providing a plurality of dividers dividing the rear cargo area of a passenger vehicle into a plurality of secure areas assessable from a plurality of panels forming a liftgate to provide controlled access to one or more of those compartments. The vehicle operator has secure control of which portions of the cargo area can be selectively accessed. The multi-way liftgate assembly provides multiple secure openings to the cargo area of a vehicle that typically has only one secure opening to the cargo area. The multi-way liftgate assembly provides on-demand open height adjustment.