Delivery Vehicle Door Lock Assembly for Secure Access and Visibility
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Solution Overview
Problem
Existing delivery vehicles lack efficient door mechanisms that allow for easy access to both the cargo and driver compartments while ensuring secure locking and reduced obstruction for improved visibility and operational efficiency.
Innovation Solution
A delivery vehicle design featuring a sliding door assembly with independent movement of the driver cab door and side cargo door, integrated with a door locking system that prevents unauthorized access and enhances visibility through optimized door and window configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional door locking system is used in delivery vehicles, then secure locking is achieved, but driver visibility is obstructed and access efficiency is reduced
Solution Approach 1:
The door assembly is segmented into multiple independent components: a cargo door and a driver cab door. The driver cab door can be opened independently while the cargo door remains closed and locked, allowing the driver to access the cab without exposing the cargo area. This segmentation resolves the contradiction by enabling selective access that maintains both security and visibility.
Solution Approach 2:
The locking mechanism is extracted from the traditional door configuration and integrated into a dual-door assembly. The lock body is positioned on the cargo door while the driver cab door has its own separate opening mechanism, allowing the locking function to be decoupled from the driver's line of sight while maintaining secure cargo storage.
2Ease of operation
If a dual door system is implemented, then access to both compartments is improved, but device complexity increases
Solution Approach 1:
The dual door system merges the cargo door and driver cab door into a single integrated assembly that shares common structural support and sealing mechanisms. The lock body serves both doors, and the weatherstrip provides sealing for both openings, reducing overall complexity despite the increased functional capability.
Solution Approach 2:
The driver cab door serves multiple functions: it provides access to the driver compartment, acts as a weather barrier, and can be locked independently from the cargo door. The lock body provides universal locking capability for both doors through a single mechanism, simplifying the overall system while maintaining ease of operation.
3Reliability
If the key aperture is positioned on the door, then locking functionality is achieved, but access obstruction increases
Solution Approach 1:
The key aperture is repositioned from a traditional location on the door panel to the lock body itself, which is mounted on the door edge. This dimensional relocation allows the key to be inserted from the side rather than through the door panel, reducing obstruction and improving access while maintaining secure locking functionality.
Data Source
AI summary
A vehicle includes a chassis, a cab coupled to the chassis, a cargo body coupled to the chassis and positioned rearward of the cab, a door coupled to the cab and selectively repositionable relative to the chassis between an open position and a closed position, and a door lock assembly configured to selectively prevent movement of the door from the closed position to the open position. The door lock assembly defines a key aperture configured to receive a key. The door lock assembly is coupled to the cab, and wherein the key aperture is positioned forward of the door.