Pre-loadable Spring Roller Blind Torsion Adjustment
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Solution Overview
Problem
Existing spring roller blinds have fixed spring tension that cannot be adjusted by users, making it inconvenient to adjust the torsion force and requiring increased user effort to reset the spring after removal.
Innovation Solution
A pre-loadable spring roller blind design featuring a spring bar with a limiting spring, a spring tail plug, and a limiting pipe plug sleeve, allowing for adjustable tension through a rotating mechanism and holding spring system, enabling users to store and maintain torsion force without discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the spring tension is adjusted by placing the spring inside the scroll to load torsion force, then the spring roller blind becomes adjustable in tension, but the operation becomes inconvenient and requires increased user effort to reset the spring
Solution Approach 1:
The patent extracts the spring loading operation from the scroll cavity by introducing an independent loading plug that can be operated externally. The loading plug allows the spring to be tensioned and locked without requiring disassembly or manipulation inside the scroll, thereby maintaining adjustability while significantly improving ease of operation.
Solution Approach 2:
The loading plug serves as an intermediary mechanism between the user and the spring tensioning system. It provides a convenient external interface for loading the spring with torsion force, eliminating the need for direct manual manipulation of the spring within the confined scroll space, thus resolving the contradiction between adjustability and operational convenience.
2Ease of manufacture
If the spring tension is fixed during production, then the manufacturing process is simple, but the user cannot adjust the tension as required
Solution Approach 1:
The patent implements preliminary action by providing a loading plug that is pre-configured with a locking mechanism and torsion force application interface. This allows the spring to be easily tensioned and locked during installation or maintenance without requiring complex manufacturing processes, thereby maintaining manufacturing simplicity while enabling user adjustability.
Solution Approach 2:
The system transitions from a static fixed-tension design to a dynamic adjustable-tension design by incorporating a loading plug with a locking mechanism. The spring tension can be dynamically adjusted by the user through the loading plug while maintaining a simple manufacturing process, as the adjustment mechanism is added as a separate functional component rather than being integrated into the basic structure.
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
Enables users to easily adjust and maintain spring tension, optimizing force loading and adjustment by preventing the spring from discharging stored force, thus enhancing user convenience and reducing operational effort.
Implementation Method 1
the holding spring and the spring bar are in interference fit; the holding spring is located in the cavity; both ends of the holding spring are respectively provided with two first lead-out parts... the first lead-out part on the left of the first positioning component has a degree of freedom for holding with the spring bar in a counterclockwise direction; and the first lead-out part on the right of the first positioning component has a degree of freedom for holding with the spring bar in a clockwise direction
Implementation Method 2
a limiting spring sleeved on the outer side of the spring bar... the tension of the limiting spring is determined by a distance between the spring tail plug and the first side bracket
Implementation Method 3
the spring must be placed inside the scroll to load a torsion force
Data Source
AI summary
A pre-loadable spring roller blind, including a spring bar, a limiting spring, a spring tail plug and a limiting pipe plug sleeve. By arranging the spring tail plug into the first rotating plug and the first adjusting core and arranging the holding spring between the first rotating plug and the first adjusting core, the first adjusting core can be rotated to store the force for the limiting spring. After the torsion force is stored, the spring may not discharge the force when released. When the limiting pipe plug sleeve is used for loading, as long as the tail of the spring bar is fixed, the limiting pipe plug sleeve is rotated to store a force for the limiting spring. After the force is stored, the limiting pipe plug sleeve can be released at any time and the limiting pipe plug sleeve is kept fixed.