Blind Cord Guide Device with Adjustable Tension Mechanism
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Solution Overview
Problem
Existing guide devices for blinds are complex to manufacture, difficult to adjust, and have a short lifespan due to wear and tear, often requiring replacement and compromising the mechanical and physical characteristics of the cords.
Innovation Solution
A guide device for blind cords featuring a containment body with adjustable coupling means that allow for easy tension adjustment and maintenance, ensuring optimal support and longevity of the cords.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known guide devices are used to fix the cord, then the cord can be supported during opening and closing movements, but the fixing means compromise the mechanical and physical characteristics of the cord, leading to premature replacement
Solution Approach 1:
The patent introduces a guide device as an intermediary component between the cord and the fixing mechanism. The guide device includes a containment body that guides the cord and a separate fixing means that attaches to the containment body rather than directly compressing the cord. This intermediary structure distributes the fixing force and prevents direct compromise of the cord's mechanical properties while maintaining reliable support during blind operation.
2Reliability
If known guide devices are used, then the cord can be fixed with adequate tension, but the devices are complex to manufacture and difficult to adjust
Solution Approach 1:
The guide device is segmented into distinct functional components: a containment body for guiding the cord, separate fixing means for applying tension, and adjustment mechanisms. This segmentation allows each component to be manufactured independently using simpler processes and enables easier assembly and adjustment, reducing overall device complexity while maintaining reliable cord tension stability.
Solution Approach 2:
The fixing means incorporates adjustable elements that allow dynamic modification of cord tension. The adjustment mechanism enables users to modify the tension level according to different operating conditions, making the device adaptable without requiring complex manufacturing. The dynamic adjustment capability maintains reliable tension stability while simplifying the overall device structure.
3Reliability
If known guide devices are used, then the cord can be fixed, but the devices have short lifetime due to wear and require replacement
Solution Approach 1:
The guide device serves as an intermediary that protects the cord from direct wear by the fixing mechanism. The containment body guides the cord through a controlled path and the fixing means attaches to the containment body rather than directly compressing or abrasioning the cord. This intermediary structure significantly reduces wear on both the cord and fixing components, extending the overall device lifespan while maintaining reliable fixing function.
4Reliability
If known guide devices are used, then the cord can be supported, but adjustment of components is not convenient
Solution Approach 1:
The fixing means incorporates dynamic adjustment elements that allow convenient modification of cord tension and positioning. The adjustment mechanism is designed to be easily accessible and operable by end-users without requiring disassembly or specialized tools. This dynamic capability maintains reliable cord support while significantly improving ease of operation for component adjustment according to different operating conditions.
Data Source
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AI summary
Described is a guide device (1) for cords of a blind, comprising a containment body (2) having a first channel (21) and a second channel (22) designed to allow the passage of a cord (C), and means (3) for coupling said cord (C) which is adjustable and manoeuvrable from the outside of said containment body.