Commercial Vehicle Partition Wall Sliding Door Mechanism
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Solution Overview
Problem
Commercial vehicle sliding doors experience instability, vibrations, and noise due to backlash in the coupling of components, and lack adequate protection for the cockpit during load movements.
Innovation Solution
A partition wall with sliding wheels having a grooved profile that couples with conjugated rails, featuring elastic means such as springs or elastic materials to compensate for backlash, and made of anti-noise plastic material, along with a modular design using aluminium extrusions for robustness and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sliding door with a counter-frame is used to enable easy access from cockpit to loading compartment, then access convenience is improved, but the mounting stability deteriorates causing vibrations and noises during driving
Solution Approach 1:
The sliding door system is divided into separate functional components: the door assembly, the guide rails fixed to the vehicle structure, and the sliding mechanism. This segmentation allows the door to be easily operated while the fixed guides maintain mounting stability and reduce vibrations during driving.
2Ease of operation
If conventional sliding door components are assembled together, then the sliding function is achieved, but backlash between components generates annoying noises
Solution Approach 1:
A buffer element is introduced as an intermediary component between the sliding door and the guide rail system. This buffer absorbs backlash and impacts between components, eliminating the annoying noises generated during sliding operations while maintaining the sliding function.
3Strength
If a rigid sliding door structure is used to ensure strength, then structural integrity is improved, but the protection of cockpit during load movements deteriorates
Solution Approach 1:
The sliding door is designed with dynamic characteristics that allow it to move and absorb impacts from load movements. The door can flexibly respond to external forces while maintaining structural integrity, thereby protecting the cockpit during sudden manoeuvres or load shifts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces vibrations and noise, ensures cockpit safety, and simplifies mounting while maintaining structural integrity and cost-effectiveness.
Implementation Method 1
At least one between said upper guide and said lower guide has elastic features to compensate for backlash present in the coupling of said sliding wheels with said respective guides
Implementation Method 2
said spring means include helical springs, rod springs, or strip springs. The spring means keep each guide in a compression state, ensuring an optimal coupling between each of said sliding wheel and said rail
Data Source
AI summary
The partition wall for commercial vehicles comprises at least one fixed plate (20) and a sliding door (10) able to slide with respect to said fixed wall (20), predisposed to separate the cockpit of the vehicle from the loading compartment. The sliding door (10) is provided, along the upper edge and along the bottom edge, with a plurality of sliding wheels (11, 12) predisposed to slide respectively on an upper guide (13) and on a lower guide (14) associated with the structure of the vehicle. The sliding wheels (11, 12) have a grooved profile predisposed to be coupled with a corresponding rail (19) of said guides (13, 14) having conjugated profile.