Pleated Screen Compensation System with Telescopic Guide Extension
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Solution Overview
Problem
Pleated screens face challenges in minimizing transverse dimensions while maintaining uniformity and aesthetics, and in compensating for dimensional differences between the screen and the opening without increasing the packed sheet's dimensions or causing the sheet to exit from the guides.
Innovation Solution
The solution involves a specific connection between the guide sectional elements and upright sectional elements of the perimetral structure, where all elements have the same transverse dimension, with corner elements designed for precise coupling and compensation, ensuring the sheet remains within the guides even when adjusting for size differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the transverse dimension of guide sectional elements is increased to house packed screen, then the screen can be contained and hidden, but the overall transverse dimension and aesthetic uniformity deteriorate
Solution Approach 1:
The guide sectional element is divided into two distinct parts: a guide portion with smaller transverse dimension for aesthetic uniformity, and an extension portion that protrudes to provide the necessary housing space for the packed screen. This segmentation allows each part to fulfill its specific function while resolving the contradiction between containment capacity and overall dimension.
Solution Approach 2:
Instead of increasing the transverse dimension of the entire guide sectional element, the invention extends the guide element in the direction perpendicular to the screen plane (the depth dimension). The extension portion protrudes from the guide portion along the direction of opening, providing housing space without compromising the aesthetic transverse dimension.
2Shape
If the transverse dimension of guide sectional elements is reduced for aesthetic uniformity, then the appearance becomes more uniform, but the ability to house packed screen and ensure complete closing deteriorates
Solution Approach 1:
The guide sectional element is segmented into a guide portion with reduced transverse dimension for aesthetic uniformity, and an extension portion that provides the necessary housing capacity. This allows the visible guide portion to maintain uniform appearance while the extension portion ensures reliable screen containment and complete closing.
Solution Approach 2:
The extension portion acts as an intermediary between the aesthetic guide portion and the screen packing requirement. It mediates by providing the additional housing space needed for reliable screen containment without affecting the aesthetic appearance of the main guide structure.
3Length of stationary object
If the distance between pleats is reduced to minimize transverse dimension, then the packed screen size decreases, but the number of pleats increases causing the packed screen to exceed guide capacity
Solution Approach 1:
The guide sectional element is segmented into a guide portion and an extension portion. This segmentation provides additional housing capacity in the extension portion, allowing the system to accommodate screens with more pleats (resulting from reduced pleat spacing) without increasing the aesthetic transverse dimension of the visible guide portion.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A compensation system for screens of openings of windows or doors, such as for example mosquito nets and blinds, comprising at least one pleated sheet (2) inserted in a perimetral structure that can be fixed at least on two opposite sides to the opening to be screened, envisages elements for connection of the corners of the perimetral structure of the screen, i.e., for connection of the ends of the guide sectional elements (10, 18) and of the upright sectional elements (15, 17) of the structure, which are designed to provide a rigid perimetral frame constituted by said fixed upright sectional elements (15, 17) and said guide sectional elements (10, 18) within which the pleated screen (2) is stretched out or packed by displacing at least one mobile sectional element or "handle" (16); there moreover being provided a further sectional element (11), fixed to the opening in which the screen is installed, designed to co-operate with at least one of the guide sectional elements (10) - by means of a telescopic coupling in a direction substantially transverse to the guide sectional element itself - in order to compensate for the dimensional differences between said perimetral structure that contains the sheet (2) and the opening in which it is installed; wherein all the sectional elements of the structure have one and the same transverse dimension with respect to the plane of the screen itself.