Hinged Wall Attachment for Screen Winder Maintenance Access
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Solution Overview
Problem
Existing screen winding devices face difficulties in accessing battery cells for maintenance, especially when the winder is positioned close to the ceiling, requiring complete disassembly or complex pivoting mechanisms that are not applicable to winders with internal components.
Innovation Solution
A screen winding device with a tubular winder that includes first and second wall attachments allowing for pivoting around a reference axis, enabling easy access to the winder's end portion for maintenance, along with a motorized actuator and battery housing within the winding tube, and a retractable support link for ergonomic handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the winder is fastened close to the lintel in the upper part of an opening, then the screen positioning is optimized, but access to the access hatch becomes difficult requiring complete disassembly
Solution Approach 1:
The wall attachment is made movable through a hinge connection, allowing the attachment to pivot between a fastening position (when installed) and an access position (when maintenance is needed). This dynamic capability enables the access hatch to be reachable without complete disassembly, resolving the contradiction between optimized screen positioning and maintenance accessibility.
2Ease of operation
If the box is made pivotable around a pivot axis parallel to the rotation axis, then access to the access hatch is facilitated, but these solutions are not transposable to winders with internal components
Solution Approach 1:
The wall attachment is segmented into separate components (fastening element and support element) connected by a hinge, allowing independent movement of each segment. This segmentation enables the attachment to pivot for access while accommodating internal components within the box, making the solution adaptable to winders with internal battery housings and motors.
3Ease of operation
If the wall attachment is articulated to allow pivoting, then single-person maintenance is enabled, but the screen must be secured to prevent damage during pivoting
Solution Approach 1:
Before the wall attachment is pivoted for maintenance access, the screen is preliminarily secured in a fixed position using the load bar engagement mechanism. This preliminary action prevents the screen from moving or damaging itself during the pivoting operation, enabling single-person maintenance while ensuring screen safety.
Data Source
AI summary
The invention relates to a device for winding a screen (10) which comprises a tubular winder (12) defining a reference axis (100); a first wall attachment (18A) for fastening a first axial end portion (14A) of the tubular winder (12) to a first wall (16A) in a use position of the screen-winding device (10); and a second wall attachment (18B) for fastening a second axial end portion (14B) of the tubular winder (12) to a second wall (16B) in the use position of the screen-winding device (10). The first wall attachment (18A) comprises at least one tab (54) for fastening to the first wall (16A) and at least one first hinge (58) supported by the fastening tab (54) in order to guide a pivoting of the tubular winder (12) about a first axis of articulation (200) that does not intersect with the reference axis (100) and, in the use position, orthogonal to the reference axis (100). The first wall attachment (18A) comprises a second jointed hinge (66) supported by the fastening tab (54) in order to guide the first hinge (58) so as to rotate about a second axis of articulation (300) that does not intersect with the reference axis and is not parallel to the first axis of articulation (200).