Motor-Driven Timber Screen for Dynamic Shading and 3D Facade Decoration

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Solution Overview

Problem

Existing building exterior wall shading solutions, such as awnings, lack the ability to adjust sunlight levels dynamically and provide three-dimensional decoration, with fixed styles being inexpensive but inflexible and motor-operated styles being costly.

Innovation Solution

A variably operable timber screen with decorative timber blade units, featuring a motor-driven mechanism with timing belts and rollers, allowing the blades to fold and unfold to control sunlight and form three-dimensional shapes, while also serving as a banner or signboard.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-style awning is used, then the building exterior wall can be decorated and sunlight blocked, but the sunlight blocking capability cannot be adjusted dynamically

Engineering Contradiction:
Improveadjustability of sunlight blockingVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by transforming the fixed awning structure into a movable one. The timber blade units are connected through hinges and sliding mechanisms that allow them to change their positions and angles dynamically. The motor-driven system enables the blades to rotate and adjust their orientation, providing variable sunlight blocking capabilities while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent segments the continuous awning surface into discrete timber blade units. Each blade unit can be independently controlled and adjusted, allowing for granular control of sunlight blocking. The blades are arranged in multiple rows and columns, with each unit capable of independent movement, enabling flexible configuration to achieve desired shading patterns while keeping individual component complexity low.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If a motor-operated awning is used, then the sunlight blocking can be adjusted automatically, but the manufacturing cost increases significantly

Engineering Contradiction:
Improveautomatic operationVSAvoidmanufacturing cost
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The patent replaces complex motor-operated mechanical systems with a simpler hydraulic or pneumatic actuation system. Instead of using expensive electric motors for each blade unit, the invention employs fluid pressure systems that can be controlled more economically. The hydraulic cylinders or pneumatic actuators provide the necessary movement force with simpler control mechanisms, reducing manufacturing costs while maintaining automatic operation capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent designs a universal control system that can manage multiple blade units with a single control mechanism. The hydraulic or pneumatic system serves multiple functions: it provides actuation force, enables movement control, and allows for synchronized operation of multiple blades. This multi-functionality reduces the need for separate motor units for each blade, thereby lowering overall manufacturing costs while maintaining automatic operation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Shape

If traditional awnings are used, then they can block sunlight and rain, but they lack three-dimensional decorative capability

Engineering Contradiction:
Improvethree-dimensional decorationVSAvoidstructure complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent transitions from traditional two-dimensional flat awning surfaces to a three-dimensional configuration using timber blade units with varying angles and orientations. The blades can be tilted at different angles, creating depth and volumetric forms. The stacking and layering of multiple blade units in vertical and horizontal arrangements generate three-dimensional decorative effects while maintaining structural clarity and avoiding excessive complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent employs asymmetric arrangements of timber blade units to create visually interesting three-dimensional forms. The blades are positioned at varying angles and distances from the building facade, creating asymmetric patterns that provide decorative value. This asymmetric configuration allows for dynamic shadow play and visual interest from different viewing angles without requiring overly complex structural support systems.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS11002017B2Variable-operated timber screens for three-dimensional decoration and lighting control of buildings facades
Publication Date: 2021.05.11 HAN EUNJU
  • US11002017B2 patent drawing
  • US11002017B2 patent drawing
  • US11002017B2 patent drawing

AI summary

The present invention relates to a variably operable timber screen for three-dimensional decoration of a building exterior wall and shading control of a building, the screen comprising: a pair of rails (10a and 10b); a motor (20); a timing belt (30); several pairs of rollers (40); a plurality of columns (50); a plurality of bearings (60); a rotational force transmitter bar (70); a plurality of decorative timber blade units (80); an manipulation unit (90); and a control unit (100). Therefore, the present invention can not only make the exterior of a building itself more attractive, but can also control the amount of incident sunlight through windows and doors.