Removable Vehicle Door Protector with Resilient Magnetic Attachment
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Solution Overview
Problem
Current vehicle door protection solutions, such as plastic sidebars and magnet-based devices, are either ineffective in protecting the entire vehicle body, prone to theft, or risk damaging the vehicle's surface during installation or impact.
Innovation Solution
A removable device with primary and secondary attachment means, including hooks, magnets, and a resilient body support, that can be easily installed and removed without tools, providing comprehensive protection for vehicle doors and adjustable to fit various vehicle types, with optional sound signaling for impact detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnet-based protection devices are used, then the device can be easily attached and removed, but the device risks scratching the vehicle surface during positioning, removal, or impact due to horizontal friction pressing particles onto the door surface
Solution Approach 1:
The patent introduces a resilient body (foam or rubber) as an intermediary between the magnet and the vehicle door surface. This body deforms under compression during impact rather than transmitting friction forces that would scratch the surface. The resilient material absorbs impact energy while preventing direct contact between hard particles and the painted surface, thus resolving the contradiction between easy attachment and surface protection.
2Strength
If plastic sidebars are installed, then local impact protection is provided, but the device only protects very local areas and does not provide comprehensive door protection
Solution Approach 1:
The patent divides the protection system into multiple segments: primary attachment means at one location, secondary attachment means at another location, and a resilient body connecting them. This segmentation allows the device to span across larger areas of the door, providing comprehensive protection rather than just local protection. The modular design also allows adaptation to different door sizes and vehicle types.
3Reliability
If high fasteners inserted in window seals are used, then attachment is achieved, but the device can be easily stolen and damages the window seals preventing their sealing function
Solution Approach 1:
The patent uses magnets as intermediary attachment means that adhere to the metal door surface without penetrating or damaging the window seal structure. The magnetic force provides sufficient holding strength for protection purposes while being completely reversible and non-invasive to the seal integrity, thus avoiding both theft vulnerability and seal damage.
4Reliability
If low attachment points are used, then the device can be attached to the lower part of the door, but the user must bend down practically to ground level making installation difficult
Solution Approach 1:
The patent positions the primary attachment means at the upper part of the door and the secondary attachment means at a middle or lower position, creating a vertical arrangement that allows the user to install the device while standing in a normal position. The resilient body connects these attachment points at different heights, providing stable attachment without requiring the user to bend to ground level, thus resolving the contradiction between secure attachment and installation ease.
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 device effectively absorbs shocks, prevents theft, and minimizes damage risks by being securely attached and adjustable, while also being easy to install and remove, maintaining the vehicle's aesthetics and aerodynamics.
Implementation Method 1
a resilient body support (115) connected to the primary attachment means (105) and to the secondary attachment means (110)
Implementation Method 2
at least one secondary attachment means is a magnet attached to the vehicle body
Data Source
Figure 1
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Figure 7
AI summary
The removable device (10) for protecting the bodywork of a land vehicle comprises: - at least one primary attachment means (105), secured to a door of the vehicle, and non-detachable therefrom when the door of the vehicle is closed, - at least one secondary attachment means (110), - a first body (130) configured to extend over at least one opening panel between at least two attachment means, each of said attachment means being removable without a tool when said door is open, and - at least one link (140) for an additional body.