Rolling Shutter Torsion Spring Wheel for Safer Tension Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing torsion spring adjusters for rolling shutter systems require manual adjustment, which can be hazardous due to the considerable force needed, posing a risk of injury from broken bones or torn ligaments.
Innovation Solution
A torsion spring adjuster system that uses a wheel with locking pin and winding bar recesses to facilitate controlled rotation and adjustment of the torsion spring, allowing for safer and more precise tension adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of torsion spring is performed by hand, then the adjustment can be made directly, but the risk of injury increases due to considerable force required
Solution Approach 1:
A winding bar is introduced as an intermediary tool between the operator's hand and the torsion spring shaft. The winding bar engages with the shaft and allows the operator to apply adjustment force safely without direct hand contact with the rotating components, thus eliminating the injury risk while maintaining adjustment capability
Solution Approach 2:
The direct manual mechanical adjustment system is replaced with a tool-assisted system. Instead of using bare hands to directly rotate the shaft, the patent introduces a winding bar that interfaces with the shaft, substituting the dangerous direct mechanical interaction with a safer indirect mechanical system
2Manufacturing precision
If torsion spring tension is adjusted by rotating the shaft, then the spring strength can be modified, but precise control during adjustment is difficult
Solution Approach 1:
The winding bar is designed with engagement features that preliminarily establish controlled interaction with the shaft before adjustment begins. The bar's geometry and engagement mechanism pre-position the adjustment interface, enabling precise incremental rotation and tension control from the start of the adjustment process
Solution Approach 2:
The adjustment system transitions from static direct hand-grip to dynamic controlled interaction through the winding bar. The bar allows controlled rotational movement with better force distribution, enabling the operator to dynamically adjust tension with finer control over the rotation speed and force applied
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 system enables safe and efficient adjustment of torsion spring tension, reducing the risk of injury and providing a more reliable and user-friendly solution for rolling shutter systems.
Implementation Method 1
Torsion springs are coil springs that store and release mechanical energy. Unlike a traditional coil spring that stores energy by pulling the ends apart, a torsion spring stores energy by twisting one end relative to the other.
Implementation Method 2
The coil spring 1002 winds by the fact that one end is rotating while the other end is fixed. When the curtain 1012 is later lifted to move from the deployed position to the retracted position, coil spring 1002 unwinds and the mechanical energy pulls the curtain 1012 upwards.
Data Source
AI summary
A torsion spring adjuster for a rolling shutter is provided. A support plate has a first flange with a hole. A wheel is rotatably mountable on the support plate. The wheel has: a drive recess shaped to engage an end of a torsion spring; a first set of recesses around a circumference of the wheel, the first set of recesses being a first lateral distance from a first end of the wheel; a second set of recesses around a circumference of the wheel, the second set of recesses being a second lateral distance from the first end of the wheel. When the wheel is mounted on the support plate the first lateral distance aligns the first set of recesses with the hole of the first flange of the support plate, and the second lateral distance aligns the second set of recess past the first flange of the support plate.