Rotating Shaft Structure With Position Limiting to Protect Wires
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Solution Overview
Problem
Conventional rotating shaft structures in adjustable electronic devices often damage wires when detached, due to the separation of connected shafts, and can cause further damage if external forces cause disconnection.
Innovation Solution
A rotating shaft structure incorporating a position limiting member and a fixing member, where the position limiting member includes a hollow portion with a position limiting portion and a fixing member with a thread portion that props against the position limiting portion when the shafts are detached, limiting the distance between the shafts and preventing wire damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the two rotating shafts are detached for angle adjustment, then the angle of the main body device can be changed, but the wires inside would be dragged or damaged
Solution Approach 1:
The patent introduces a fixing member as an intermediary component between the first and second rotating shafts. This fixing member includes a rod portion that extends into a hole of the first rotating shaft and a thread portion that engages with the second rotating shaft. When the shafts are detached, the rod portion remains inserted in the hole, acting as a mediator that prevents excessive separation and protects the wires from being dragged or damaged, while still allowing angle adjustment when needed.
2Stability of the object's composition
If the fixing member is used to fix the two rotating shafts, then the angle of the main body device can be fixed, but the structure becomes more complex
Solution Approach 1:
The fixing member is segmented into distinct functional portions: a head portion for engagement, a rod portion that extends into the hole of the first rotating shaft, and a thread portion that engages with the second rotating shaft. This segmentation allows each portion to perform its specific function independently, providing stable angle fixation while keeping the overall structure relatively simple and manageable.
3Reliability
If the outer diameter of the thread portion is greater than the rod portion, then the fixing member can be properly engaged, but the manufacturing precision requirements increase
Solution Approach 1:
The fixing member exhibits local quality by having different outer diameters at different portions. The thread portion has a larger outer diameter than the rod portion, with each portion's diameter optimized for its specific function. The rod portion's smaller diameter allows it to fit into the hole, while the thread portion's larger diameter provides sufficient engagement surface area with the second rotating shaft. This localized differentiation of dimensions improves engagement reliability while keeping manufacturing requirements reasonable for each specific portion.
Data Source
AI summary
A rotating shaft structure is applied to an adjustable electronic device. The rotating shaft structure includes a first rotating shaft, a second rotating shaft, a position limiting member and a fixing member. The position limiting member is disposed between the first rotating shaft and the second rotating shaft. The position limiting member includes a main body portion, a hollow portion and a position limiting portion. The hollow portion is through the main body portion and corresponding to a hole of the first rotating shaft. The position limiting portion is located at an inner wall of the hollow portion. The fixing member includes a head portion, a rod portion and a thread portion. The rod portion and the thread portion are inserted into the hole, the head portion is located outside the hole, and the thread portion passes through the hollow portion and connects to the second rotating shaft.