Tool-Free Curtain Reeling Device with Central Coupling
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Solution Overview
Problem
Conventional reeling devices for curtains and blinds are noisy, difficult to mount and demount, and require tools, leading to inefficiencies and increased product costs, while also risking tangling and skewing of strings.
Innovation Solution
A reeling device with a coupling component that secures to the head rail without screws, allowing for easy, tool-free mounting and operation, minimizing noise and vibrations by positioning the coupling mechanism centrally for balanced mechanical forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reeling devices are secured to the head rail using screws, then the mounting is firm and stable, but the mounting process becomes time-consuming, requires tools, and increases product costs
Solution Approach 1:
The invention extracts and eliminates the screw fastening system from the mounting process. The reeling device incorporates a self-contained bracket structure with engagement elements that directly interface with the head rail, removing the need for separate screws and tool-based fastening operations.
Solution Approach 2:
The bracket component is designed to be self-fastening through its engagement mechanism. The bracket includes protrusions or clamping elements that automatically secure to the head rail upon insertion, allowing the device to mount itself without external tools or additional fastening components.
2Reliability
If hooks are used to engage the head rail for firm mounting, then the mounting is secure, but the reeling unit heavily rattles and oscillates during operation producing loud noise
Solution Approach 1:
The bracket component is designed with dynamic engagement features that allow for controlled movement and absorption of operational vibrations. The bracket may include elastomeric elements or friction-based interfaces that dampen oscillations while maintaining secure attachment during the reeling operation.
Solution Approach 2:
The bracket acts as an intermediary element between the reeling unit and the head rail, providing a buffered connection that reduces direct transmission of vibrations and noise. The bracket's design includes features that absorb and dissipate mechanical energy from string tension changes and reel rotation.
3Adaptability or versatility
If multiple strings are wound on the reeling device, then the curtain or blind can be suspended, but the windings may tangle or overlap causing skewing and oscillation
Solution Approach 1:
The reeling device incorporates individual string guides or channels for each string, segmenting the winding paths to prevent interference between adjacent strings. Each string has its own designated route through the bracket and around the reel, ensuring independent and orderly winding without tangling or crossing.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A reeling device (1) is mounted to a head rail (27) for suspending a curtain or a blind. The reeling device (1) comprises a bracket component (2), a reel component (3), and a detachable coupling component (4) adapted to secure the bracket component (2) with the reel component (3) to the head rail (27). A turnable coupling component (4) serves to secure the reeling device to the head rail at a center position of the head rail. This locking system allows a curtain or blind suspended by the head rail to be noiseless raised and lowered.