Threaded Winding Mechanism for Lamp with Reduced Friction
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Solution Overview
Problem
Conventional winding mechanisms for adjustable lamps either require excessive space or suffer from poor smoothness of winding and unwinding due to mechanical configurations that lead to wire entanglement.
Innovation Solution
A winding mechanism featuring a housing with an internal thread structure and an inner cylinder with an external thread structure, allowing the inner cylinder to rotate along a central axis, which includes contact and non-contact portions to reduce friction and enable smooth wire winding and unwinding, while also allowing the wire to be wound along a fixed track, thereby reducing the mechanism's volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the suspension wire is wound along a fixed track, then the mechanism volume is reduced, but the wire is easy to get stuck and winding smoothness is poor
Solution Approach 1:
The external thread structure is divided into multiple contact portions and non-contact portions along the winding path. The contact portions engage with the internal thread structure to guide the wire, while the non-contact portions create gaps that prevent entanglement and reduce friction, enabling smooth winding within a compact volume.
2Ease of operation
If the suspension wire is not wound along a fixed track, then the winding smoothness is improved, but a larger space is required for receiving the suspension wire
Solution Approach 1:
The thread structure acts as an intermediary between the inner cylinder and the suspension wire. The external thread structure on the inner cylinder engages with the internal thread structure in the housing to constrain and guide the wire along a controlled path, achieving smooth winding while maintaining a compact mechanism volume.
3Productivity
If the inner cylinder rotates along the central axis, then the wire winding efficiency is improved, but friction between thread structures increases
Solution Approach 1:
The external thread structure is designed with varying local properties: contact portions that engage with the internal thread structure for guidance and non-contact portions that create gaps to reduce friction. This localized differentiation allows efficient winding while minimizing energy loss from friction during the rotation of the inner cylinder.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the smoothness of winding and unwinding operations, reduces the required space, and allows for adjustable hanging lengths of lamps, improving user experience and operational efficiency.
Implementation Method 1
The external thread structure is cooperated with the internal thread structure. The inner cylinder is capable of displacing along the central axis by rotating relative to the housing.
Implementation Method 2
The external thread structure includes at least two contact portions and at least two non-contact portions, and gaps are formed between the non-contact portions of the external thread structure and the internal thread structure.
Data Source
AI summary
A winding mechanism includes a housing, an inner cylinder and a wire. The housing is formed with an accommodating space therein. An inner surface of the housing is formed with an internal thread structure. The inner cylinder is disposed in the accommodating space and defines a central axis. An outer surface of the inner cylinder is formed with an external thread structure. The external thread structure is cooperated with the internal thread structure. The inner cylinder is capable of displacing along the central axis by rotating relative to the housing. The external thread structure includes at least two contact portions and at least two non-contact portions, and gaps are formed between the non-contact portions of the external thread structure and the internal thread structure. An end of the wire is connected to the inner cylinder and is wound along the external thread structure of the inner cylinder.