Motorized Roller Shade Spring Pre-Winding for On-Site Torque Setup
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Solution Overview
Problem
Existing motorized window treatments require pre-winding of springs during manufacturing, which is inefficient and increases production costs.
Innovation Solution
A spring assist assembly is integrated into the motorized roller shade, allowing for pre-winding at the installation site, reducing the need for factory pre-winding and providing consistent torque assistance during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spring pre-winding is performed during manufacturing, then the window treatment is ready for immediate use, but manufacturing complexity and costs increase
Solution Approach 1:
The spring is pre-wound during manufacturing but designed to be easily adjustable at the installation site. The spring assist assembly includes an adjustment mechanism that allows installers to fine-tune the pre-wound spring's tension and rotation count to match specific window treatment requirements, combining the benefits of factory preparation with on-site customization capability
2Productivity
If spring pre-winding is performed during manufacturing, then the product is ready for installation, but production costs and time increase
Solution Approach 1:
The manufacturing process performs preliminary spring winding to a standard baseline configuration, preparing the spring assist assembly for immediate installation. The system is designed with adjustable components that allow final torque and rotation calibration to be performed quickly at the installation site rather than requiring precise factory calibration for every custom application
Solution Approach 2:
The spring assist assembly incorporates adjustable elements that enable dynamic tuning of the spring's pre-wound state. Installers can modify the spring's tension and rotation count based on the specific weight and dimensions of the window treatment, allowing the system to adapt to different applications without requiring complete re-winding during manufacturing
3Reliability
If spring pre-winding is performed during manufacturing, then consistent torque is provided, but manufacturing precision requirements increase
Solution Approach 1:
The manufacturing process establishes a baseline pre-wound configuration that provides consistent starting torque for all units. The spring assist assembly is designed with mechanical stops and guide features that ensure uniform initial winding, while allowing for simple field adjustments to fine-tune the torque characteristics for specific applications
Solution Approach 2:
The system allows adjustment of spring pre-winding parameters such as rotation count and tension force at the installation site. This enables the same manufactured spring to be optimized for different window treatment weights and dimensions, maintaining torque consistency across various applications without requiring precise factory calibration for each specific case
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
This approach reduces manufacturing complexity and costs while ensuring consistent torque requirements for raising and lowering the covering material, enhancing operational efficiency.
Implementation Method 1
The spring assist assembly may include a spring (e.g., a constant-force spring), a bracket coupling portion, and a roller tube coupling portion. The spring may be configured to coil and uncoil as the roller tube rotates
Implementation Method 2
The spring assist assembly may be configured to assist the motor drive unit operate the battery-powered motorized window treatment. For example, the spring assist assembly may reduce the torque required from the motor drive unit to raise and/or lower the covering material
Data Source
AI summary
Systems, methods, and apparatus are described herein for pre-winding a motorized roller shade. The motorized roller shade may include a roller tube, a flexible material attached to the roller tube, a motor drive unit, and mounting brackets configured to support respective ends of the roller tube. The roller tube of the roller shade may be slid to an extended position. A configuration procedure may be determined to have been initiated. The flexible material may be secured, for example, to prevent the flexible material from unrolling. The roller tube may be wound a predetermined number of rotations with the flexible material and a hembar of the roller shade secured, for example, to prevent the flexible material from being raised or lowered. Winding the roller tube may include pre-winding a spring that is coupled to the roller tube. The flexible material may be unsecured when the roller tube has been pre-wound.