Protective Shell for Vehicle Door Panel Using Locking Well
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Solution Overview
Problem
Existing car door panel protectors either cause damage during installation, are difficult to remove, or fail to protect against common hazards due to their design and attachment methods, which diminish the appearance and resale value of vehicles.
Innovation Solution
A thin, hard plastic protective shell that fits over the vehicle door panel, secured without fasteners or adhesives by interfacing with the door pull and inner panel surfaces, allowing easy installation and removal, and designed to cover the panel while maintaining the original functionality of the door and window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fasteners such as screws or adhesives are used to hold the door protector, then the protector is securely fixed in position, but the interior surfaces are punctured or marred, diminishing the protective purpose
Solution Approach 1:
The patent uses a thin film door protector that can be applied without fasteners. The flexible yet protective film conformally attaches to the door panel surface, providing secure coverage while avoiding punctures or marks from screws or adhesives.
Solution Approach 2:
The patent introduces a tensioning mechanism as an intermediary between the door protector and the door structure. This tensioning system secures the protector in place through distributed tension rather than point-contact fasteners, eliminating surface damage while maintaining reliable fixation.
2Ease of operation
If flexible materials such as cloth are used for the door protector, then the protector can be easily installed without fasteners, but it is blown out the window at highway speeds, requiring additional fastening mechanisms
Solution Approach 1:
The patent employs a thin film material that is flexible enough for easy installation without fasteners but engineered with sufficient tensile strength and aerodynamic properties to resist being blown out at highway speeds. The film's flexibility allows simple application while its material properties ensure reliability under wind load.
Solution Approach 2:
The patent incorporates a tensioning mechanism that dynamically adjusts to wind forces. The system maintains the protector in place through controlled tension that increases with wind pressure, allowing the flexible material to remain secure at highway speeds while staying easily installable.
3Strength
If the door protector is made rigid and sturdy, then it provides ample protection against damage, but it requires screws or adhesive for mounting, reducing vehicle resale value
Solution Approach 1:
The patent uses a thin film protector that provides adequate protection against minor damage while being installable without screws or adhesives. The film's material properties are optimized to balance flexibility for easy installation with sufficient strength to protect the door panel.
Solution Approach 2:
The patent applies the door protector in a preliminary, non-invasive manner using tensioning rather than permanent fastening. This preliminary attachment method provides protection without the installation damage that would reduce resale value, while still delivering adequate protective capability.
4Productivity
If the door protector is frequently removed and reinstalled for cleaning, then the interior can be maintained, but adhesives or fasteners make this process difficult and time-consuming
Solution Approach 1:
The patent employs a thin film door protector that can be easily removed and reinstalled for cleaning purposes. The flexible material allows simple manipulation without tools, enabling frequent removal and reattachment to maintain interior cleanliness efficiently.
Solution Approach 2:
The patent uses a dynamic tensioning system that allows the door protector to be easily attached and detached. The tensioning mechanism can be quickly engaged or disengaged without tools, facilitating frequent removal for cleaning and rapid reinstallation, thereby improving both ease of operation and cleaning efficiency.
Data Source
AI summary
A protective shell protects an interior door panel of a vehicle having an inner face with a protruding door pull defining a door well for receiving a user's fingers and a door sill leading to a window opening. The protective shell has a deformable sheet of hard plastic with an exposed side and a reverse side, the reverse side being profiled to fit over the inner face of the vehicle door interior panel. An outwardly directed top surface portion rests on the door sill. A protrusion on the exposed side of the deformable sheet encloses the vehicle door pull. A locking well extends downwardly from an upper ledge of the door pull and is responsive to downward pressure on the upper ledge to fit snugly into the door well to hold the protective shell securely in position on the interior door panel.