Motorized Sheer Shade Positioning With Variable Speed Control

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Solution Overview

Problem

Existing sheer shading systems, such as horizontal sheer blinds or soft sheer shades, require manual adjustment via pull cords, which is time-consuming and detracts from the aesthetic, especially in installations with multiple systems.

Innovation Solution

A motorized sheer shading system with a motor-driven roller tube that controls the movement of sheer shade materials between open, closed, and view positions, featuring variable rotational speeds and automatic control limits, allowing for remote operation and precise positioning of the vanes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual pull cord adjustment is used, then device complexity is reduced, but ease of operation deteriorates due to time-consuming manual adjustment

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the manual pull cord mechanical system with an electric motor system. The motor is operably coupled to the roller tube and automatically raises or lowers the sheer shade material between open and closed positions, eliminating the need for manual pull cord operation and significantly improving ease of operation.

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

2Productivity

If pull cord is used for multiple systems, then device complexity remains low, but loss of time increases due to adjusting each shade individually

Engineering Contradiction:
ImproveproductivityVSAvoidloss of time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The electric motor system replaces manual pull cord operation, enabling automated control of the sheer shade material. This automation eliminates the time required to manually adjust each shade individually, significantly improving productivity when managing multiple shading systems.

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

3Ease of operation

If motorized control is implemented, then ease of operation improves, but device complexity increases due to adding motor and control systems

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent implements a motorized system where the motor is operably coupled to the roller tube, replacing manual pull cord operation. This substitution provides automated control that significantly improves ease of operation, accepting the necessary increase in device complexity as a trade-off for operational convenience.

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

4Manufacturing precision

If variable rotational speeds are used, then manufacturing precision improves for positioning, but device complexity increases due to speed control mechanisms

Engineering Contradiction:
Improvepositioning precisionVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent implements variable rotational speeds of the roller tube to achieve precise positioning of the sheer shade material. By dynamically adjusting the rotational speed, the system can accurately position the shade at desired locations while maintaining operational efficiency, accepting the necessary complexity for precision control.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12553282B2Motorized sheer shading system
Publication Date: 2026.02.17 LUTRON TECHNOLOGY COMPANY LLC
  • US12553282B2 patent drawing
  • US12553282B2 patent drawing
  • US12553282B2 patent drawing

AI summary

A motorized sheer shading system may move a sheer shade material between an open position, a closed position, and a view position. The shading system may move the sheer shade material from the open position to the closed position at a first average rotational speed, and from the closed position to the view position at a second average rotational speed. The shading system may automatically determine a control limit that corresponds to the closed position of the sheer shade material after control limits have been set for the open position and the view position. The shading system may cause the sheer shade material to stop moving once it reaches the closed position if the raise button of a remote control is still depressed, and may cause the sheer shade material to stop moving once it reaches the closed position if the lower button of the remote control is still depressed.