Motorized Roller Shade Spring Pre-Winding at Installation
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Solution Overview
Problem
Existing motorized window treatments require pre-winding of springs during manufacturing, which is inefficient and may lead to increased manufacturing costs and complexity.
Innovation Solution
A spring assist assembly is pre-wound at the installation site, eliminating the need for pre-winding during manufacturing, and includes a spring assist assembly with a bracket coupling portion and roller tube coupling portion to provide constant torque assistance during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-winding of springs is performed during manufacturing, then the motorized window treatment is ready for operation, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The spring is pre-wound at the installation site rather than during manufacturing, performing the necessary action in advance but at a different stage of the product lifecycle. This eliminates the need for complex manufacturing processes while ensuring the spring is ready to provide torque assistance when installed.
Solution Approach 2:
The system allows for on-site pre-winding of the spring, enabling the installation process itself to complete the preparation that would otherwise require separate manufacturing steps. This self-service approach simplifies manufacturing while maintaining operational readiness.
2Reliability
If pre-winding of springs is performed during manufacturing, then the product is ready for immediate use, but manufacturing time and costs increase
Solution Approach 1:
The spring pre-winding action is moved from the manufacturing stage to the installation stage, maintaining operational readiness while improving manufacturing productivity by eliminating this time-consuming step from the production line.
Solution Approach 2:
The installation process itself performs the spring pre-winding function, combining two steps into one and eliminating the need for separate manufacturing preparation, thereby improving overall productivity.
3Force
If a spring assist assembly is added to provide constant torque assistance, then the torque required by the motor drive unit is reduced, but the device complexity increases
Solution Approach 1:
The spring assist assembly acts as a counterweight or opposing force mechanism, storing mechanical energy when the shade is lowered and releasing it to assist in raising the shade. This reduces the torque requirement for the motor drive unit by providing mechanical assistance in the opposite direction of gravity's effect on the shade.
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 method reduces the torque required by the motor drive unit, simplifies the manufacturing process, and lowers costs by allowing on-site pre-winding, ensuring efficient operation of motorized window treatments.
Implementation Method 1
The spring may be configured to coil and uncoil as the roller tube rotates
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.