Window Shade Speed Stabilizer Friction Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing window shade actuating systems can cause accidental damage due to the free fall of the bottom part hitting users or damaging components, as the release mechanism may not adequately control the descent.
Innovation Solution
Incorporating a speed stabilizer with a housing and rotary plate carrying friction elements that rotate with the transmission axle, reducing rotational speed and stabilizing its operation to ensure smooth displacement of the window shade components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transmission axle is allowed to rotate freely for lowering the bottom part, then the operation simplicity is improved, but the safety deteriorates due to accidental free fall hitting users or damaging components
Solution Approach 1:
The patent introduces a speed stabilizer as an intermediary device between the transmission axle and the suspension cord mechanism. This speed stabilizer includes a housing with an inner wall and a rotary plate with friction elements that rub against the inner wall, creating controlled friction to limit the rotational speed of the transmission axle. This intermediary mechanism maintains the simplicity of operation while preventing dangerous free fall by actively controlling the descent speed through friction-based speed stabilization.
2Productivity
If the transmission axle rotates quickly for rapid adjustment, then the productivity is improved, but the safety deteriorates due to uncontrolled speed causing accidental damage
Solution Approach 1:
The patent applies parameter changes by dynamically controlling the rotational speed parameter of the transmission axle through the speed stabilizer mechanism. The friction elements rubbing against the inner wall of the housing create a speed-dependent friction force that automatically adjusts to maintain the transmission axle rotation within a safe speed range. This allows rapid adjustment when needed while preventing dangerous speeds that could cause accidental damage.
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 solution provides a safer and more controlled operation of window shades by stabilizing the rotational speed of the transmission axle, preventing accidental damage and ensuring smooth adjustment.
Implementation Method 1
the rotary plate being rotatable along with the transmission axle with the friction elements rubbing against the inner wall of the housing
Data Source
AI summary
An actuating system for a window shade includes a transmission axle rotatable about a longitudinal axis thereof, and a speed stabilizer including a housing having an inner wall, and a rotary plate disposed inside the housing and configured to rotationally couple to the transmission axle, the rotary plate carrying a plurality of friction elements angularly spaced apart from one another about the longitudinal axis of the transmission axis, the rotary plate being rotatable along with the transmission axle with the friction elements rubbing against the inner wall of the housing.