Integrated Cord Tensioning Rail Insert for Fast Sunshade Assembly
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Solution Overview
Problem
Existing sun protection systems require complex installation and assembly of cord tensioners, which are space-consuming and increase the risk of errors, while also needing manual retensioning, and separate end caps and tensioners detract from aesthetic appeal.
Innovation Solution
A cord tensioning device with a spring element and receiving unit that can be integrated into a profile rail, allowing for easy installation and tensioning of multiple cords without individual threading, featuring deflection points to enhance friction and self-regulating tension, reducing space requirements and assembly effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate cord tensioners and end caps are used, then cord tensioning function is achieved, but assembly complexity and installation effort increase significantly
Solution Approach 1:
The patent combines the cord tensioner and end cap with cover plate into a single integrated cord tensioning device. This merging eliminates the need for separate components, reducing assembly steps and installation effort while maintaining all necessary functions (cord tensioning, aesthetic coverage, and structural support).
Solution Approach 2:
The integrated cord tensioning device performs multiple functions simultaneously: it acts as a cord tensioner, an end cap cover, and a structural component of the profile rail. This multi-functionality reduces the total number of components needed in the system.
2Volume of moving object
If multiple separate components are used for cord tensioning, then adequate space is available for installation, but space within the profile rail increases
Solution Approach 1:
By merging the cord tensioner and end cap into a single compact integrated device, the overall volume occupied within the profile rail is reduced compared to having separate components that would each require their own space.
3Productivity
If individual threading of each tensioning cord through separate tensioners is performed, then proper cord tensioning is achieved, but installation time and error potential increase
Solution Approach 1:
The integrated design allows multiple tensioning cords to be threaded through a single unified structure rather than requiring separate threading operations for multiple separate tensioners, significantly reducing installation time and error potential.
4Shape
If separate end cap and cord tensioner are attached at spaced positions, then both functions are fulfilled, but aesthetic appearance and manufacturing efficiency decrease
Solution Approach 1:
The integrated cord tensioning device provides a unified, streamlined appearance at the end of the profile rail, eliminating the visual disruption of separately mounted components. It also simplifies manufacturing by reducing the number of parts that need to be produced and assembled.
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 simplifies installation, reduces space consumption, and provides an aesthetically pleasing finish by integrating tensioning and deflection functions, eliminating the need for separate components and manual retensioning.
Implementation Method 1
The spring element is positioned to apply a tension force to the tension cord. This tightens the tension cord, particularly after the mounting unit is fixed within the profile rail.
Implementation Method 2
It was discovered that deflecting the tension cord by 360° at a deflection point increases the frictional force to such an extent that ease of use is significantly reduced.
Data Source
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Figure 10~11
AI summary
The invention relates to a cord tensioning device (20) for tensioning and deflecting a tensioning cord (102) of a sun protection system (100), comprising a spring element (24) and a receiving unit (21) on which the spring element (24) is fixed, wherein the receiving unit (21) can be at least partially inserted into a profile rail (103, 104) of the sun protection system (100) and fixed to the profile rail (103, 104), wherein the cord tensioning device (20) has at least one deflection point (30), preferably at least two deflection points (30), for deflecting the tensioning cord (102), and wherein the spring element (24) applies a tensioning force to the tensioning cord (102) so that the tensioning cord (102) is taut, in particular after fixing the receiving unit (21) within the profile rail (103, 104).Furthermore, the invention relates to a sun protection system (10) with a profile rail (103, 104), with a tension cord (102), with a sun protection curtain (101) and with a cord tensioning device (20).