Rotary Shaft Link Device for Compact Dual-Shaft Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dual-shaft mechanisms in electronic devices suffer from weakened structural strength, increased volume, and complex assembly due to minimized gear and link plate engagement, leading to rotational slippage and compromised user experience.
Innovation Solution
A rotary shaft link device with a simplified structure featuring a transmission unit on one shaft, a reaction unit on another, and a plate-like link unit with tooth structures between them, allowing for minimal cooperative gaps and easy assembly, enabling modular adjustment and a compact, lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the gears and link plates are minimized to meet lightweight and thin structure requirements, then the electronic apparatus achieves simplified structure and beautiful appearance, but the engagement/transmission working depth between components is reduced, leading to weakened structural strength and shortened gear lifetime
Solution Approach 1:
The patent merges the gear and link plate functions into a single integrated component - the link unit with tooth structures. This eliminates the need for separate gears and link plates, achieving miniaturization while maintaining sufficient engagement depth through the vertical arrangement of multiple tooth structures on the link unit that engage with corresponding teeth on the transmission and reaction units.
Solution Approach 2:
The patent transitions from planar gear engagement to three-dimensional engagement by arranging tooth structures vertically on the link unit. The link unit engages transmission units on both sides simultaneously through these vertically arranged teeth, creating multi-dimensional engagement that maintains strength while reducing overall component volume.
2Device complexity
If the gears and link plates are minimized, then the electronic apparatus achieves simplified structure, but the use lifetime of gears is shortened due to reduced engagement depth and rotational slippage
Solution Approach 1:
By combining multiple gear engagement points into the single link unit structure with multiple tooth structures, the patent achieves simplified structure while increasing total engagement depth. The multiple vertical teeth on the link unit engage simultaneously with transmission units, distributing wear across multiple contact points and preventing rotational slippage.
3Reliability
If multiple gears and link plates are used for power transmission, then the rotary shafts can synchronously rotate, but the structural relationship between components becomes complicated and the volume increases
Solution Approach 1:
The patent merges multiple separate gear and link plate components into a single integrated link unit that connects two rotary shafts directly. This single link unit with vertically arranged tooth structures simultaneously engages both transmission units, achieving synchronous rotation while dramatically simplifying the structural relationship and reducing component count.
4Adaptability or versatility
If the number of link devices is increased to meet product specifications, then the application range is widened, but the assembly becomes more troublesome and volume increases
Solution Approach 1:
The link unit is designed as a universal modular component that can be applied to various product specifications. By adjusting the number of link units rather than redesigning the entire mechanism, the same basic link unit structure serves multiple functions and adapts to different application requirements while maintaining simple assembly procedures.
Data Source
AI summary
A rotary shaft link device has a simplified structure occupying less room and is easy to assemble and includes a transmission unit disposed on a first shaft, a reaction unit disposed on a second shaft and a link unit disposed between the transmission unit and the reaction unit. Two ends of the link unit are formed with driving sections engaged with the transmission unit and the reaction unit. The link unit is assembled in the rail of the restriction plate. When the first shaft is rotated, the link unit responsively moves from a first position to a second position to drive the reaction unit and the second shaft to synchronously rotate. According to the specification of the product, the number of the link devices can be easily adjusted to achieve the object of modularized assembly.