Multi-Roll Blind With Independent Screens for Light and View Control
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Solution Overview
Problem
Conventional blinds struggle with blocking sunlight while maintaining visibility and require additional equipment for tinting, and are difficult to operate in a customized manner to meet various user demands.
Innovation Solution
A serial type multi roll blind with two screens of different light transmissivity (translucent and opaque) connected in series, where each screen is independently adjustable using torsion springs and actuators for balanced torque, allowing customizable operation to block, tint, or transmit light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a window is covered with a blind to block sunlight, then sunlight blocking is improved, but visibility of the outside view deteriorates
Solution Approach 1:
The blind system is divided into multiple independent screens (first screen, second screen) that can be operated separately. Each screen can be in different positions (wound or unwound) to provide different functions: one screen blocks sunlight while another maintains visibility, resolving the contradiction between sunlight blocking and view visibility.
2Object-affected harmful factors
If a window is tinted to reduce sunlight, then sunlight blocking is improved, but additional equipment is required for complete blocking
Solution Approach 1:
The blind system integrates multiple functions into a single device structure. The first screen provides tinting effect while the second screen provides complete blocking, allowing the system to perform both partial and complete sunlight blocking functions without requiring separate tinting equipment and blind equipment.
3Object-affected harmful factors
If a blind is designed to cover the entire window, then sunlight blocking is improved, but customized operation for different window portions deteriorates
Solution Approach 1:
The blind is segmented into multiple independently operable screens that can be positioned at different heights and extents. This allows customized operation where different portions of the window can have different levels of sunlight blocking, satisfying diverse user needs for different window zones.
Solution Approach 2:
Each screen is equipped with independent winding mechanisms that allow dynamic adjustment of position and coverage. The screens can be moved to different positions to create customized configurations, enabling users to adapt the blind system to various situations and preferences.
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
Enables simultaneous or selective use of multiple screens to block sunlight, provide tinting, and maintain visibility, offering customized control over light transmission and blocking, satisfying diverse user needs.
Implementation Method 1
The first winding bar may include a torsion spring that is connected to the first winding roll and generates first torque while being compressed by rotation of the first winding roll, thereby offsetting second torque that is generated in the opposite direction to the first torque by the weight of the first screen and the weight bar in rotation.
Data Source
AI summary
A serial type multi roll blind is provided. The serial type multi roll blind includes: a weight bar, a first screen that has a lower end connected to the weight bar and an upper end connected to a first winding roll and is wound on the first winding roll or unwound from the first winding roll by rotation of the first winding roll, a first winding bar in which the first winding roll is rotatably coupled, a second screen that has a lower end connected to the first winding bar and an upper end connected to a second winding roll and is wound on the second winding roll or unwound from the second winding roll by rotation of the second winding roll, and a first winding bar in which the first winding roll is rotatably coupled.