Roll-Up Screen Drive Layout for Centered Blackout Alignment

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Solution Overview

Problem

Existing shading systems for blackout installations suffer from light gaps and misalignment due to the protruding torque support and human-machine interface, affecting visual aesthetics and ease of access.

Innovation Solution

A drive device for a winding assembly that integrates the torque support and human-machine interface within the winding tube, allowing the screen to be centered and reducing the external protrusion, with access to the interface through a longitudinal section of the side wall.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the torque support head is located outside the winding tube to allow easy access to the human-machine interface, then user access to the interface is improved, but light gaps and misalignment occur affecting visual aesthetics

Engineering Contradiction:

Improveuser access to human-machine interfaceVSAvoidlight gap and alignment

Core Design Contradiction:

Ease of operationVSShape

Solution Approach 1:

The human-machine interface is nested within the winding tube structure. The torque support head is positioned inside the winding tube, and the interface components (buttons, display, connector) are integrated into the internal structure, allowing access through openings in the winding tube wall rather than requiring external protrusion.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The interface access is shifted from a radial external access (protruding head) to a longitudinal internal access (through openings in the winding tube wall). This dimensional change allows the interface to be accessible while maintaining a compact, centered appearance that eliminates light gaps.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the torque support and human-machine interface protrude from the winding tube, then access to the interface is maintained, but the screen cannot be properly centered causing different clearance on either side

Engineering Contradiction:

Improveaccess to human-machine interfaceVSAvoidscreen centering and alignment

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The torque support is nested within the winding tube, with the human-machine interface components integrated into the internal structure. This eliminates external protrusions that would cause misalignment, allowing the screen to be properly centered on the opening while maintaining interface accessibility through openings in the winding tube wall.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Adaptability or versatility

If the head of the electromechanical actuator is located outside the body to provide functionality, then user interaction is enabled, but the device complexity and external protrusion increase

Engineering Contradiction:

Improvehuman-machine interface functionalityVSAvoidexternal protrusion and structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The human-machine interface components (buttons, display, connector) are merged with the torque support structure and integrated into the winding tube internal structure. This consolidation eliminates separate external head components, reducing device complexity while maintaining full interface functionality through openings in the winding tube wall.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4653660A1Drive device for a winding device of a darkening device

Publication Date: 2025.11.26 SOMFY ACTIVITES SA

Figure 1~2
Figure 3A~3B
Figure 4~6

AI summary

Winding device for a roll-up screen of a blackout installation comprising a longitudinal axis winding assembly (X) and a drive device for rotating the winding assembly about its longitudinal axis (X), said drive device comprising a tubular housing in which are disposed an electric motor, one or more power batteries, a control circuit and a human-machine interface (16) accessible through a side wall of the housing, in which the winding assembly (6) comprises a winding tube and a crown (28), in which said crown (28) is mounted at a longitudinal end of the winding tube (and has an outside diameter equal to that of the winding tube) and in which the crown (28) has in its side wall an access zone (26) for the human-machine interface.