Selective Blind Tilting via Driven Drum Mechanisms
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Solution Overview
Problem
Conventional Venetian blinds lack the ability to selectively tilt open or close portions independently, limiting light control, privacy, and aesthetic options, especially in scenarios requiring balanced light entry and glare management.
Innovation Solution
A blind system with drum portions and tilt cables/actuator cords allows for the tilting of entire blinds or selective tilting of blind portions, utilizing co-axial, parallel, or variable radius mechanisms to achieve double pitch, pleated, or split configurations, enabling enhanced light control and privacy through adjustable slat orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If standard width slats are used with adjacent pairs moving together to stack against each other when tilted open, then the open area between adjacent pairs of slats is doubled (double pitch arrangement), but the blind cannot selectively tilt open or close portions independently
Solution Approach 1:
The blind is divided into multiple independently controllable sections, each with its own tilt mechanism. This segmentation allows different portions of the blind to be tilted independently while maintaining the double pitch configuration in each section, thus achieving both maximum open area and selective tilt capability.
Solution Approach 2:
The blind incorporates dynamic control mechanisms that allow the tilt angle and tilt state (open/closed) of each section to be adjusted independently in real-time. This dynamic control enables the blind to adapt to different lighting and privacy requirements while maintaining the double pitch configuration for maximum light entry when needed.
2Object-affected harmful factors
If the entire blind is tilted closed to block light and provide privacy, then light control and privacy are improved, but natural light and ventilation are reduced
Solution Approach 1:
Different sections of the blind are assigned different tilt states based on local requirements. For example, the upper portion can be tilted closed to block direct sunlight and provide privacy, while the lower portion remains tilted open to allow natural light and ventilation. This local differentiation resolves the contradiction between light blocking and natural light admission.
3Illumination intensity
If slats are tilted to allow maximum light through the blind, then illumination intensity is improved, but privacy is reduced
Solution Approach 1:
The blind is segmented into multiple independently controllable sections, allowing different tilt angles to be applied to different portions. This enables the upper section to be tilted at a steeper angle for privacy while the lower section maintains a shallower angle for light transmission, or vice versa depending on the time of day and external conditions.
Solution Approach 2:
The blind sections can be periodically adjusted between different tilt states to balance light transmission and privacy requirements. For example, during morning hours when direct sunlight is less problematic, more sections can be tilted open for light transmission, while during afternoon hours when glare and privacy concerns increase, more sections are tilted closed.
Data Source
AI summary
A tilter system for a window blind permits the slats of the blind to be tilted open or closed in a number of different configurations, including a double pitch configuration, depending on the routing of tilt cables or actuator cords.