Drop-Down Shade Locking Mechanism for Aesthetic and Remote Control
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Solution Overview
Problem
Existing devices for automatically locking drop-down shades in slide tracks fail to maintain aesthetic integrity and enable remote-controlled operation, especially when motorized, as they either compromise the appearance or lack complete automation.
Innovation Solution
A device comprising a cylindrical projection integrated with the bottom rail of the shade and an elastic switch within the slide track, allowing the shade to lock in extended positions and retract under remote control commands, utilizing an elastic mechanism to secure and release the projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device is installed in the slide track, then the shade can be automatically locked in extended position, but the aesthetic appearance of the device is compromised
Solution Approach 1:
The locking mechanism is extracted from the visible slide track area and integrated into the bottom rail structure. The cylindrical projection is mounted on the underside of the bottom rail, making it invisible from the front view of the shade, thus maintaining aesthetic appearance while preserving the automatic locking function.
Solution Approach 2:
The locking mechanism components are nested within the structure of the bottom rail and slide track. The cylindrical projection is integrated into the bottom rail, and the elastic switch is embedded in the slide track, creating a compact nested arrangement that maintains clean lines and aesthetic appearance.
2Reliability
If a locking device is installed in the slide track, then the shade can be automatically locked, but the device complexity increases
Solution Approach 1:
The locking mechanism is merged with the existing bottom rail and slide track structures. The cylindrical projection is integrally formed with or mounted on the bottom rail, and the elastic switch is integrated into the slide track, combining multiple functions into unified structures rather than adding separate complex components.
Solution Approach 2:
The elastic switch automatically detects the position of the cylindrical projection and triggers the locking or unlocking action without requiring external control systems. The mechanism uses the natural elastic deformation of the switch blade to sense position and actuate the locking function, eliminating the need for motors, sensors, or complex control electronics.
3Extent of automation
If the shade is completely extended for remote-controlled operation, then automatic locking can be achieved, but the fabric is exposed to wind action
Solution Approach 1:
The locking mechanism engages automatically as the shade approaches its fully extended position during remote-controlled operation. The elastic switch detects the approach of the cylindrical projection and triggers the locking action before the shade completes its extension, securing the fabric in place and preventing wind exposure while maintaining operational automation.
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 automatic locking and tensioning of the shade, maintaining aesthetic integrity while allowing remote-controlled operation, ensuring the shade can be raised and lowered efficiently without exposing the fabric to wind.
Implementation Method 1
an elastically operating switch disposed inside the slide track... comprising an elastic blade transversely joined to the bottommost extremity of the slide track and bending in both directions along its length
Implementation Method 2
a spring-loaded pin for engagement with said cylindrical projection, said pin being movable between an engaged position, in which the pin engages the projection to lock the shade in an extended position, and a disengaged position
Data Source
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AI summary
The subject of the invention is a specific locking device for drop-drown shades with tracks, which permits the fabric to be tensioned in the fully extended position, or also in an intermediate position, by simple operation of a hand shade winder, or, in the case of a motorised shade, by means of a remote control or by means of automated systems.