Roller Blind Gear Stage for Compact Drive Integration
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Solution Overview
Problem
Conventional roller blind devices require expensive and space-consuming drive systems that are not reliable in operation, necessitating a cost-effective and space-efficient solution for the drive mechanism.
Innovation Solution
A gear stage with a worm gearing system that allows the output shaft to be independently positioned relative to the roller blind shaft axis, utilizing a reduction gear to transmit rotational force efficiently, enabling the use of compact and reliable drive devices, such as those from automotive engineering, within the roller blind box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional tubular motor is inserted into the roller blind shaft to drive it, then the drive function is achieved, but the device becomes expensive and space-consuming
Solution Approach 1:
The drive device is segmented into separate functional components: the electric motor is positioned separately from the roller blind shaft, connected through a transmission mechanism (gear stage with first and second gear wheels). This segmentation allows each component to be optimized independently and reduces the space required within the roller blind shaft itself.
Solution Approach 2:
The transmission mechanism transforms the rotational motion from the motor into linear motion of the roller blind shaft through a gear stage arranged in a different spatial dimension. The first gear wheel rotates about a first axis, the second gear wheel about a second axis, creating a dimensional transformation that decouples motor position from shaft position.
2Reliability
If a conventional tubular motor is used to drive the roller blind shaft, then the drive function is achieved, but production costs increase
Solution Approach 1:
The gear stage transmission mechanism serves multiple functions: it transmits power from the motor to the roller blind shaft, reduces the motor's rotational speed to the appropriate level, and provides mechanical advantage for reliable operation. This multi-functionality eliminates the need for specialized expensive motor designs, allowing use of standard reliable motors.
Solution Approach 2:
The gear stage acts as an intermediary between the electric motor and the roller blind shaft. This intermediary transmission mechanism allows the use of simple, reliable, inexpensive motors while achieving the required drive function through mechanical advantage and speed reduction.
3Volume of stationary object
If the output shaft is positioned independently from the roller blind shaft axis using a gear stage, then space efficiency is improved, but the device complexity increases
Solution Approach 1:
The gear stage employs asymmetric arrangement of the first and second gear wheels with their axes of rotation offset from each other and from the roller blind shaft axis. This asymmetric configuration allows compact space utilization while maintaining simple, standard gear wheel components that are easy to manufacture and assemble.
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 configuration allows for a space-efficient and reliable drive mechanism that adapts the movement of the output shaft to the roller blind shaft, utilizing existing automotive components, thereby reducing production costs and optimizing installation space while ensuring reliable operation.
Implementation Method 1
The output shaft of the roller blind device carries a worm gearing, which meshes with an adjusting wheel that is fixedly connected to the first gear wheel
Implementation Method 2
a gear stage via which the output shaft is operatively connected to the roller blind shaft and which has a first gear wheel which is rotatably mounted about a first axis of rotation
Data Source
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AI summary
The roller blind device (12) has a roller blind shaft (121) which is rotated along the roller shaft axis. A driving device (2) is provided with an output shaft and configured to adjust roller blind shaft by an electric motor. The transmission stage is provided to operatively connect the output shaft with the roller blind shaft. The transmission stage is comprised with the first gear which is rotatably mounted about on roller blind shaft parallel to the first rotational axis spaced from the roller blind shaft axis. An independent claim is included for the closing device of building.