Movable Mosquito Screen With Flexible U-Shaped Guiding Tape
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Solution Overview
Problem
Existing movable mosquito screens are costly due to complex and expensive guiding elements, such as mutually articulated link tracks, which also pose installation and maintenance challenges and affect the aesthetic appeal.
Innovation Solution
A movable mosquito screen utilizing a flexible tape with a U-shaped cross-section as a guiding element, fixed to a fixed box and a movable box, allowing the net to slide within a channel and be hidden from view, reducing costs and encumbrances while maintaining functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mutually articulated link tracks are used as guiding elements, then the net can be guided during extension and retraction, but the cost and device complexity increase significantly
Solution Approach 1:
The patent replaces rigid articulated link tracks with a flexible guiding tape having a U-shaped cross-section. This flexible tape is substantially planar and can be bent to accommodate the movement of the net, providing guiding functionality while eliminating the complexity of multiple articulated segments. The tape's flexibility allows it to conform to the net's extension and retraction movements without requiring complex mechanical joints.
2Reliability
If mutually articulated link tracks are used as guiding elements, then the net can be guided during extension and retraction, but the manufacturing and installation costs increase
Solution Approach 1:
The flexible guiding tape is a simpler, more cost-effective alternative to articulated link tracks. It can be manufactured as a continuous flexible element rather than assembling multiple rigid segments with joints, reducing material costs and manufacturing complexity. The tape's simple U-shaped cross-section allows for easier production and installation compared to the complex articulated mechanism.
3Shape
If the guiding elements are inserted in a bezel to remain hidden from view, then the aesthetic appearance is improved, but the device complexity and encumbrances increase
Solution Approach 1:
The flexible guiding tape can be easily accommodated within a bezel structure because of its planar and flexible nature. The tape's ability to bend and conform allows it to be hidden within the bezel's profile without requiring additional complex mechanisms. This maintains the aesthetic appearance while reducing the encumbrances associated with rigid articulated link tracks that would be more difficult to conceal.
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 provides a low-cost, aesthetically pleasing, and reliable mosquito screen with reduced encumbrances, ensuring effective insect screening without compromising appearance, by using a flexible tape to guide the net during extension and retraction.
Implementation Method 1
at least one flexible tape (5), which is fixed with a first end (5a) thereof to the fixed box (3) and has a transverse cross-section that is at least partially U-shaped, in order to form a guiding seat for at least one corresponding end portion of the movable box (4) and for the net (2), which can slide within such guiding seat
Data Source
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AI summary
A movable mosquito screen, particularly for windows, doors and the like, which comprises a fine mesh net (2) which is provided with a substantially perimetric frame. The frame, which can be installed in an opening in an element of the type of a wall and the like, comprises a fixed box (3), which is coupled to an edge of the net (2) and is associated stably with a corresponding margin of the opening, and a movable box (4), which is fixed on the side opposite to the net (2) and can perform a translational motion on command, along a direction which is substantially perpendicular to the fixed box (3), for transition from a first configuration, in which the net (2) is substantially gathered around the fixed box (3), to a second configuration, in which the net (2) is extended so as to block the opening, and vice versa. The substantially perimetric frame comprises at least one flexible tape (5), which is fixed with a first end (5a) thereof to the fixed box (3) and has a transverse cross-section that is at least partially U-shaped, so as to form a guiding seat for at least one corresponding end portion of the movable box (4) and for the net (2).