Roller Blind Balance Regulator Torque Compensation
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Solution Overview
Problem
Current hand-propelled roller blind systems face challenges in balancing torque generated by return springs due to varying widths, heights, and fabric types, leading to difficulties in use and increased inventory complexity.
Innovation Solution
A roller blind balance regulator featuring a stepped shaft with a friction cylinder and mandrel, where the friction cylinder is connected to the roller blind rod, allowing the friction force to dynamically adjust to balance the torque by changing the contact area between the friction cylinder and the friction layer, thereby compensating for torque differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring systems are specially designed for different widths, heights, and fabric types, then torque balancing is improved, but device complexity and inventory requirements increase
Solution Approach 1:
The patent changes the parameter of friction coefficient through different friction layers and adjustable friction cylinders, allowing a single spring system design to adapt to various torque requirements by modifying friction parameters rather than designing multiple spring systems
Solution Approach 2:
The patent introduces an adjustable friction cylinder that can dynamically modify the friction force between the roller blind rod and the support structure, enabling real-time torque compensation without changing the spring system configuration
2Device complexity
If a fixed spring pretightening force is used, then device complexity is reduced, but torque balancing deteriorates during long-term use
Solution Approach 1:
The patent implements a self-adjusting mechanism where the adjustable friction cylinder automatically compensates for torque changes through friction regulation, allowing the system to self-correct without external intervention or complex control systems
Solution Approach 2:
The patent creates a feedback loop through the friction adjustment mechanism that responds to torque imbalances by modifying friction force, thereby automatically restoring balance when transmission forces change during long-term use
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 effectively balances the torque of the return spring, ensuring smooth operation and preventing the blind fabric from falling or becoming misaligned, by dynamically adjusting the friction force as the roller blind rod rotates, thus enhancing user experience and simplifying production.
Implementation Method 1
a friction layer is arranged between the friction cylinder and a large-diameter section of the stepped shaft
Data Source
AI summary
Disclosed are a roller blind balance regulator and a roller blind composed thereof. The roller blind balance regulator includes a stepped shaft and a friction cylinder, where the stepped shaft is provided with an external thread, the stepped shaft penetrates the friction cylinder, the friction cylinder is provided with an internal thread and is in threaded connection with the stepped shaft, and a friction layer is arranged between the friction cylinder and the stepped shaft. The roller blind includes a roller blind rod, a blind fabric, two mounting members, and the roller blind balance regulator, and a return spring is arranged in the roller blind rod. In the present invention, the roller blind rod drives the friction cylinder to rotate, so that the friction cylinder axially moves along a limiting screw while rotating, thereby increasing or decreasing a friction force between the friction cylinder and the friction layer.