Roller Blind Drive Layout With Worm Self-Locking for Multi-Size Windows
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Solution Overview
Problem
Existing electric-driven roller blind driving devices face challenges such as complex assembly processes, high costs, and limited compatibility with various window sizes due to the need for multiple tubular motor types and sizes, as well as difficulties in noise control and torque requirements.
Innovation Solution
A driving device with a deceleration transmission assembly featuring a duplex gear worm and worm wheel, integrated control and power modules within a mounting seat, and a self-locking mechanism, allowing for a single motor to be compatible with different roller tube diameters, reducing assembly complexity and cost, and enabling narrower blind curtains for smaller windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple tubular motors with different diameters are used to match various roller tubes, then compatibility with different window sizes is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent designs a universal tubular motor with a standardized diameter that can be adapted to drive roller tubes of various diameters through a universal coupling mechanism. This allows a single motor type to serve multiple functions across different window sizes, eliminating the need for multiple specialized motor types and reducing device complexity.
Solution Approach 2:
The patent employs adjustable parameters in the coupling mechanism, such as variable gear ratios or adjustable transmission components, that allow the same motor to deliver appropriate torque and speed characteristics for different roller tube diameters. This parameter adjustment capability enables one motor design to accommodate multiple application scenarios.
2Length of moving object
If the tubular motor length is reduced to fit smaller windows, then adaptability to small windows is improved, but mounting space for internal components is reduced
Solution Approach 1:
The patent redistributes internal components from a linear arrangement along the motor axis to a three-dimensional compact layout, utilizing radial space and vertical stacking. This dimensional reorganization allows components to be arranged more efficiently within the constrained volume, maintaining adequate mounting space while reducing the overall motor length.
Solution Approach 2:
The patent implements a nested arrangement where smaller components are positioned within the spaces created by larger components, or where components are stacked concentrically around the motor shaft. This nesting strategy maximizes the utilization of available mounting space within the shortened motor housing.
3Reliability
If a combined planetary gear and brake block structure is used, then self-locking function is achieved, but noise control becomes more difficult especially in smaller motors
Solution Approach 1:
The patent separates the self-locking function from the planetary gear mechanism by extracting the brake block as an independent component. This isolation allows the planetary gear to operate without the noise-generating engagement of friction materials, while the brake block provides self-locking functionality through a separate, optimized design that can be tuned for quieter operation.
Solution Approach 2:
The patent introduces damping materials or noise-absorbing structures as intermediaries between the moving components and the motor housing. These intermediary elements absorb vibrations and reduce noise transmission, particularly in smaller motors where space for noise control features is limited.
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 simplifies assembly, reduces costs, stabilizes torque, minimizes noise, and allows for a single motor to fit various roller tubes, saving resources and improving product competitiveness by integrating components and using a self-locking structure, enabling the electric-driven roller blinds to be adaptable to different window sizes.
Implementation Method 1
The driving device... comprises a worm wheel and a worm which are in transmission fit in sequence... has a self-locking function
Implementation Method 2
The deceleration transmission assembly comprises a duplex gear worm and a worm wheel... stabilizes torque
Data Source
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AI summary
A driving device for an electric-driven roller blind and an electric-driven roller blind thereof are provided which comprise a control module and a power module, and further comprise a mounting seat (1), a motor (2) and a deceleration transmission assembly; the mounting seat (1) comprises a horizontal part (4) and a vertical part (5); the control module, the power module and the motor (2) are all contained within the horizontal part of the mounting seat. The deceleration transmission assembly is placed within the vertical part of the mounting seat (1); the upper end of the deceleration transmission assembly is connected with the output end (9) of the motor (2). The present invention is simple in structure, with self-locking function, convenience in assembly, low cost, capability of consolidating motors of different diameter types, and suitable for fitting windows of various sizes.