Pivotable Belt Winder for Roller Shutters
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Solution Overview
Problem
Existing belt winders for blackout devices, such as roller shutters, face challenges in improving the operation of surface-mounted units, particularly in terms of leverage ratios and aesthetic appeal compared to flush mounting.
Innovation Solution
The belt winder is designed to pivot about a vertical axis during surface mounting, allowing the side that faces forward in flush mounting to point upwards or downwards, optimizing the belt webbing inlet's location and leveraging ratios, with a pivot hinge and adjustable mounting options for universal applicability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the belt winder is surface-mounted on a masonry section, then the installation flexibility is improved, but the leverage ratios deteriorate compared to flush mounting
Solution Approach 1:
The belt winder is designed with a pivotable mounting mechanism that allows dynamic adjustment between different mounting orientations. The device can be mounted flush or surface-mounted, and the housing can be rotated to align the webbing inlet optimally, transforming a static mounting solution into a dynamic one that adapts to different installation scenarios while maintaining mechanical efficiency
Solution Approach 2:
The invention introduces rotational freedom around a vertical pivot axis, adding a new dimensional degree of freedom to the mounting system. This allows the belt winder to be oriented in different directions (horizontal for flush mounting, vertical for surface mounting) without compromising the leverage ratios, effectively solving the contradiction by operating in multiple spatial dimensions
2Shape
If the belt winder is surface-mounted, then the aesthetic appeal is improved, but the belt webbing inlet distance from masonry section increases
Solution Approach 1:
The pivotable mounting mechanism enables the housing to be rotated around a vertical axis, allowing the webbing inlet to be positioned close to the masonry section regardless of whether the device is surface-mounted or flush-mounted. This dynamic repositioning capability maintains both aesthetic appeal and optimal webbing routing
Solution Approach 2:
The housing is designed with an asymmetric configuration where the webbing inlet is positioned on a specific side that can be oriented toward the masonry section through rotation. This asymmetric design allows the aesthetic surface-mounted configuration to simultaneously achieve optimal inlet positioning by simply rotating the housing to the appropriate orientation
3Adaptability or versatility
If the belt winder is designed for universal mounting (flush and surface), then the versatility is improved, but the device complexity increases
Solution Approach 1:
The fastening arrangement is designed with universal mounting means that can function in both flush-mounted and surface-mounted configurations. The same mounting brackets and fastening mechanisms are used for both mounting types, allowing the device to achieve multi-functionality without proportionally increasing complexity
Solution Approach 2:
The invention combines the mounting functions for flush and surface mounting into a single integrated fastening arrangement. By merging the mounting capabilities and using common components for both mounting types, the complexity increase is minimized while achieving universal versatility
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
The winder has a fixing arrangement (14) for fixing of the winder in a mounted condition, where the winder is mountable in a flush mount in a recess (15) of a brickwork section (16) and in a surface mount on a mounting surface of the brickwork section. The fixing arrangement is provided with a flush mount fitting unit (18) and a surface mount fitting unit. The fixing arrangement is designed such that a side (7) of the winder points inward or outward to the surface mount, where the side of the winder points towards the flush mount.