Dual-Spool Cord Housing With Multi-Aperture Cord Routing
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Solution Overview
Problem
Existing cord spool assemblies for architectural coverings are inefficient in terms of manufacturing and installation, and there is a need for a design that allows straightforward installation and effective use in various situations.
Innovation Solution
A single housing design supporting two cord spools with parallel axes, featuring bottom and side apertures for cord guidance, and a tongue portion with guide surfaces to facilitate cord threading and reduce wear, allowing installation directly over or along the headrail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single housing supports two cord spools with parallel axes, then manufacturing efficiency is improved and device complexity is reduced, but the housing depth and internal space requirements increase
Solution Approach 1:
The patent combines two cord spools with parallel axes into a single housing structure, integrating multiple functional elements (first cord spool, second cord spool, first bottom aperture, second bottom aperture, first side aperture, second side aperture) into one unified assembly. This merging reduces the number of separate components needed, simplifies manufacturing processes, and improves production efficiency while maintaining the functional independence of each cord spool system.
Solution Approach 2:
The single housing structure serves multiple functions simultaneously: it houses both cord spools, provides multiple aperture options for cord routing (bottom and side apertures), and supports various installation configurations. This multi-functionality allows the same housing design to accommodate different architectural covering applications and installation scenarios, enhancing versatility without requiring additional specialized components.
2Adaptability or versatility
If bottom apertures and side apertures are provided in the housing, then the assembly can be used in multiple locations and installation flexibility is improved, but the housing structure becomes more complex
Solution Approach 1:
The housing is designed with both bottom apertures and side apertures, enabling the same assembly to be installed in multiple locations and configurations. The bottom apertures allow cords to pass through the lower portion for direct downward routing, while the side apertures enable lateral cord exit options. This multi-functional aperture design accommodates various architectural covering types and installation scenarios without requiring multiple specialized housing variants.
Solution Approach 2:
The housing structure incorporates multiple aperture openings that provide dynamic adaptability for cord routing. The presence of both bottom and side apertures allows the installation configuration to be adjusted based on the specific application requirements, enabling the system to adapt to different spatial arrangements and architectural covering designs while maintaining a consistent housing structure.
3Reliability
If cords are guided through multiple apertures with guide surfaces, then cord wear is reduced and cord lifespan is improved, but the manufacturing complexity increases
Solution Approach 1:
Guide surfaces are provided within the housing at the apertures to mediate the interaction between cords and the housing structure. These guide surfaces create smooth transition paths for cords as they pass through bottom and side apertures, reducing friction, preventing sharp bends, and minimizing wear on the cords. The guide surfaces act as intermediary elements that protect the cords from direct contact with rough edges or sharp corners of the aperture openings.
Solution Approach 2:
The guide surfaces are pre-formed as integral parts of the housing structure during manufacturing, preparing the cord routing paths in advance. This preliminary action ensures that cords will experience reduced wear from the outset of installation, as the smooth transition surfaces are already in place to guide cord movement and prevent damage during normal operation.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(b)
AI summary
A cord spool assembly for an architectural covering, including a housing, a first cord spool and a second cord spool. The housing has an upper portion and a lower portion. The first cord spool is configured to supply and withdraw a first cord through the lower portion of the housing and the second cord spool is configured to supply and withdraw a second cord through the lower portion of the housing. The housing defines, in the lower portion, a first bottom aperture for guiding the first cord and a second bottom aperture for guiding the second cord. It additionally defines, in the lower portion, a first side aperture for guiding the first cord and a second side aperture for guiding the second cord.