Window Covering Rotation Limiter With Spring Brake Assist
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Solution Overview
Problem
Conventional window blind systems face challenges in efficiently managing the force required to extend and retract window coverings, as the force needed increases as the covering is raised, and there is a lack of flexibility in mounting locations for drive mechanisms, limiting the range of functionality.
Innovation Solution
The integration of a spring motor and drag brake combination that provides assistance in raising and lowering window coverings by varying torque resistance based on direction and position, allowing for flexible mounting and reduced creep or falling of the shades, with the ability to pass lift and tilt shafts through the motor housing for compact installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a spring motor is used to assist in raising and lowering window coverings, then the force required to operate the covering is reduced, but the device complexity increases
Solution Approach 1:
The spring motor and drag brake are combined into a single integrated housing, merging two separate mechanisms into one compact unit. This reduces the overall number of components while providing both the force assistance from the spring motor and the creep prevention from the drag brake, resolving the contradiction between reduced operating force and device complexity
Solution Approach 2:
The integrated motor housing serves multiple functions: it houses the spring motor for force assistance, contains the drag brake for creep prevention, and provides mounting points for flexible installation. This multi-functionality allows a single component to address multiple operational requirements, reducing overall system complexity while maintaining force assistance
2Adaptability or versatility
If the drive mechanism is mounted in a fixed location, then the mounting structure is simplified, but the range of functionality and flexible mounting options is limited
Solution Approach 1:
The motor housing is designed with universal mounting capabilities, featuring multiple mounting points and a compact form factor that allows installation in various locations (head rail, bottom rail, or side mounting). This versatility enables the same housing to adapt to different mounting scenarios without requiring additional complex mounting structures
Solution Approach 2:
The drive system is segmented into a self-contained motor housing unit that can be independently mounted at different locations. This modular segmentation allows the housing to be positioned flexibly along the covering structure, providing adaptability to various installation requirements while keeping the mounting structure relatively simple
3Volume of moving object
If lift and tilt shafts are routed through the motor housing, then the installation becomes more compact, but the device complexity increases
Solution Approach 1:
The lift shaft and tilt shaft are routed through the motor housing, with the shafts passing through hollow passages within the housing structure. This nesting arrangement allows the shafts to be contained within the housing volume, reducing the overall installation space while integrating multiple functional elements into a compact configuration
Solution Approach 2:
The shaft routing utilizes the internal three-dimensional space of the motor housing by creating passageways through the housing structure. This dimensional approach allows the shafts to pass through the housing rather than around it, significantly reducing the external footprint of the installation while maintaining functional separation of components
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 solution provides consistent and manageable force throughout the operation of window coverings, prevents unwanted movement, and allows for a wider range of functional configurations by enabling flexible mounting of drive components, enhancing user experience and system efficiency.
Implementation Method 1
A spring motor and drag brake combination 102 can be used in window coverings to provide assistance in raising and lowering the window coverings
Implementation Method 2
A spring motor and drag brake combination 102 can be used in window coverings to provide assistance in raising and lowering the window coverings
Data Source
AI summary
A covering for architectural openings.