Stringless Blind Rail Structure for Quiet, Simple Assembly
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Solution Overview
Problem
Conventional stringless blind structures have too many components, making assembly costly and difficult, and generate noise due to the movement of the moving base and string controller.
Innovation Solution
A stringless blind structure comprising a main rail, a secondary rail, and a main blind body, where a string body winds between connecting units and through holes, providing a secured positioning and controlling the movement to reduce noise and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional stringless blind structure uses moving base and string controller to control blind body expansion and restoration, then the blind can be controlled to expand or restore, but it generates noise when the moving base moves and when the string controller pulls or releases the transmitting string
Solution Approach 1:
The patent removes the string controller and moving base components from the system, extracting the noise-generating elements while retaining the essential function of blind control through a simplified string-based mechanism
Solution Approach 2:
The patent replaces the complex mechanical system involving inner rotor and spring interaction with a simpler string-based mechanical system that eliminates noise while maintaining control functionality
2Ease of operation
If conventional stringless blind structure uses string controller and moving base with inner rotor and spring, then the blind can be controlled, but it generates noise due to the interaction of inner rotor and spring
Solution Approach 1:
The patent extracts and removes the noise-generating inner rotor and spring components, replacing them with a simple string-based control mechanism that achieves the same functional outcome without mechanical interaction noise
Solution Approach 2:
The patent uses simple, inexpensive string components instead of complex, expensive mechanical controllers, achieving cost reduction while eliminating noise generation
3Ease of operation
If conventional stringless blind structure uses many components including string controller and moving base, then the blind can be controlled, but it is not easy to assemble and the cost to assemble the structure is high
Solution Approach 1:
The patent merges multiple separate components (string controller, moving base, guiding units) into a simplified integrated system using only main rail, secondary rail, and string body, reducing assembly complexity
Solution Approach 2:
The patent creates multi-functional components where the string body serves multiple purposes (control, positioning, restriction) and the rails provide both structural support and guiding functions, reducing the total number of components needed
Data Source
AI summary
A stringless blind structure includes a mail rail, a secondary rail, a main blind body and a string body. The main rail, the secondary rail and the main blind body are connected and operated through the string body and a string, so the cost of the structure is lower and the it is more convenient and easier to assemble. Also, the string body winds around two connecting units, and is restricted by the string. When the main blind body expands or restores through the movement of the main rail and the secondary rail, the movement is restricted and controlled by the string to achieve the goal of stringless movement to reduce the noise when the blind moves and to further improve the life quality at home.