Vehicle Window Screen Magnetic Border Assembly
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Solution Overview
Problem
Existing retractable screen assemblies for vehicle windows often require additional mechanisms to maintain tension, which can damage the screen material and hinder smooth horizontal movement, especially in thin or inferior materials.
Innovation Solution
A retractable screen and doorframe assembly featuring a screen storage reel with a reel motor, axially connected wheel sets, and a positive magnetic border that interacts with a negative magnetic rod in the doorframe, allowing for smooth horizontal movement and secure closure without excessive weight or tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional mechanisms are added to maintain screen tension, then the screen remains secure in position, but the screen material may be damaged and smooth horizontal movement is hindered
Solution Approach 1:
The patent replaces traditional mechanical tensioning mechanisms (weights, springs, or tensioning devices) with a magnetic field-based retention system. The screen border contains magnetic material that interacts with magnetic rods in the doorframe to hold the screen in position without mechanical tension, eliminating the need for weighted mechanisms and enabling smooth horizontal movement.
Solution Approach 2:
The patent changes the physical state of the screen border by incorporating magnetic material, transforming it from a passive structural element to an active magnetic component. This parameter change enables the screen to be retained through magnetic attraction rather than mechanical tension, resolving the contradiction between security and smooth movement.
2Ease of operation
If additional weighted mechanisms are provided to balance screen movement, then horizontal movement is improved, but the increased weight can damage the screen material
Solution Approach 1:
The patent eliminates the need for weighted balancing mechanisms by using a magnetic field to provide retention force. The magnetic interaction between the screen border and doorframe magnetic rods provides the necessary holding force without adding mechanical weight that could damage thin or inferior screen materials.
Solution Approach 2:
The patent changes the force application method from mechanical weight to magnetic field interaction. This parameter change allows for effective screen retention and controlled movement without the damaging effects of additional weight on the screen material.
3Reliability
If the screen is placed under tension to maintain position, then the screen remains secure, but the tension can damage the screen material
Solution Approach 1:
The patent substitutes mechanical tension with magnetic attraction for screen position retention. The magnetic border interacts with magnetic rods in the doorframe to hold the screen securely without applying damaging tensile forces to the screen material, thereby maintaining both position stability and material durability.
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
Enables the screen to move smoothly and securely across the vehicle window, reducing the risk of damage and improving airflow while maintaining safety for occupants, particularly children and pets.
Implementation Method 1
the retractable screen is provided with a positive magnetic border that quickly advances with positive magnetic force towards a conventional doorframe assembly having a negative magnetic rod being provided therein
Data Source
AI summary
An improved retractable screen and doorframe assembly for a vehicle is presented. The novel construction is provided wherein the window and the retractable screen reside in the housing of a vehicle doorframe once the retractable screen and window are deployed. A plurality of axially connected wheel sets residing within an inner frame track facilitates the frictionless movement of the retractable screen in a horizontal direction and secures movement of the same as it is recoiled in a backward disposition onto the screen storage reel of a screen cartridge. Forward movement is further facilitated with a positive magnetic border that quickly advances with positive magnetic force towards the doorframe assembly having a negative magnetic rod being provided therein.