Shading Device Kit Segmentation for Tolerance and Cost
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Solution Overview
Problem
Existing shading device kits for building openings, such as vertical awnings and roller shutters, face challenges in achieving uniformity and large manufacturing tolerances while maintaining a lightweight construction, making them unsuitable for new builds due to cost and dimension variability.
Innovation Solution
A basic system with a winding shaft, curtain, and support, combined with an additional housing that forms a casing around the winding shaft, allowing for relative displacement and using inexpensive materials with high tolerances, while the basic system maintains precise dimensions and necessary components for function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a basic system with precise dimensions is used, then functional reliability is improved, but manufacturing cost increases and manufacturing tolerances must be tight
Solution Approach 1:
The system is divided into two distinct segments: a basic system (carrying frame, winding shaft, curtain) requiring precise dimensions for functional reliability, and an auxiliary housing providing thermal/acoustic insulation with relaxed tolerances. This segmentation allows each part to be manufactured according to its specific requirements, reducing overall manufacturing cost while maintaining functionality.
Solution Approach 2:
The insulation function is extracted from the basic system and implemented as a separate auxiliary housing. This extraction allows the basic system to focus solely on functional requirements with precise dimensions, while the auxiliary housing can be manufactured with larger tolerances using inexpensive materials, thereby reducing manufacturing costs.
2Object-affected harmful factors
If a complete housing is integrated into the kit, then thermal and acoustic insulation is improved, but device complexity and manufacturing precision requirements increase
Solution Approach 1:
The auxiliary housing is designed to be detachably connected to the basic system, allowing dynamic assembly and disassembly. This dynamic connection reduces device complexity by enabling separate manufacturing and assembly of the insulation housing, rather than requiring a permanently integrated complex structure.
Solution Approach 2:
A connection interface acts as an intermediary between the basic system and the auxiliary housing. This intermediary element enables the two components to be joined while maintaining their independence, reducing overall device complexity by allowing separate optimization of each component.
3Productivity
If standardized components are used, then productivity and cost-effectiveness are improved, but adaptability to different installation spaces decreases
Solution Approach 1:
The auxiliary housing is designed as a universal component that can be adapted to different installation spaces through adjustable mounting mechanisms. This universal design allows the same standardized housing to serve multiple functions and fit various opening sizes, maintaining both productivity and adaptability.
Solution Approach 2:
The system allows parameter changes in the auxiliary housing (such as dimensions, mounting positions) to adapt to different installation requirements. By enabling parameter adjustment, the standardized components can be configured for various applications without requiring custom manufacturing, thus maintaining productivity while improving adaptability.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The application relates to a kit for a building opening shading device, with at least one winding shaft and a curtain that can be wound up and unwound on it, as well as a box enclosing the winding shaft with a slot on the underside for the curtain, wherein the box is designed as a top-mounted box for mounting on a door or window frame with a shell (3, 4) extending coaxially around the winding shaft and end-face covers (2).