Synchronized Dual-Pivot Hinge via Linkage Members
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Solution Overview
Problem
Conventional dual-pivot hinges in electronic devices suffer from unsynchronized rotation due to non-uniform force application and torque differences, leading to inefficient operation and reduced lifespan, with existing solutions like gear-based and rail-based systems being complex and prone to errors in manufacturing and functionality.
Innovation Solution
A synchronized multiple-angle rotatable dual-pivot structure comprising a first and second pivot with connection members and a support frame, allowing the pivots to induce mutual pushing and pulling forces for effortless synchronized rotation, capable of reaching at least 180 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional dual-pivot hinge with independent single-pivot hinges is used, then the structure is simple, but the two hinges cannot rotate synchronously leading to uneven operation and reduced lifespan
Solution Approach 1:
The patent introduces connection members as intermediary elements that link the two single-pivot hinges. These connection members transmit forces between the hinges, ensuring they rotate synchronously. This mediator approach resolves the synchronization problem without requiring complex control mechanisms, thereby improving reliability while maintaining reasonable structural complexity.
Solution Approach 2:
The patent combines two independent single-pivot hinge systems into a unified dual-pivot hinge structure through the addition of connection members. By merging the operational systems while maintaining the simplicity of individual hinges, the invention achieves synchronized rotation and extended lifespan without excessive complexity.
2Reliability
If a gear-based simultaneously-driving dual-pivot hinge is used, then synchronized rotation can be achieved, but the structure becomes complicated and manufacturing and assembly become difficult
Solution Approach 1:
The patent extracts the complex gear train from the simultaneously-driving dual-pivot hinge system and replaces it with simpler connection members. This extraction eliminates the manufacturing and assembly difficulties associated with precise gear mating while maintaining the synchronized rotation function through a more manufacturable structure.
Solution Approach 2:
The connection members used in the patent are simpler and more easily manufactured than precision gears. While individual connection members may need replacement, their simplicity makes them cheaper and easier to manufacture and replace compared to precision gear trains, improving ease of manufacture.
3Reliability
If a rail-based simultaneously-driving dual-pivot hinge is used, then synchronized rotation is achieved, but the structure is prone to derailing and has imperfect functionality
Solution Approach 1:
The connection members act as intermediary elements that provide a more stable connection between the two hinges compared to rail-based systems. This intermediary approach eliminates the derailing susceptibility inherent in rail-based designs while maintaining synchronized rotation through a more robust mechanical connection.
4Reliability
If a planetary assembly is used to drive simultaneous rotation, then synchronized operation is achieved, but the operation consumes extended time and requires great user effort
Solution Approach 1:
The connection members are designed to balance the forces between the two hinges, creating a counterbalancing effect that reduces the effort required by the user. This counterweight principle allows synchronized rotation to occur more easily and quickly compared to planetary assembly systems that require greater user effort.
Data Source
AI summary
A synchronized multiple-angle rotatable dual-pivot structure includes a first pivot, a second pivot, a plurality of connection members, and a support frame. The first pivot and the second pivot are each provided with an installation slot. The connection members are of the same length and each has two ends respectively and movably mounted in the installation slots of the first pivot and the second pivot. The support frame has two ends respectively coupled to the first pivot and the second pivot. The connection members are connected between the first pivot and the second pivot so that when one of the first pivot and the second pivot is rotated, forces are induced between the first pivot and the second pivot to mutually pull and push each other so that synchronized rotation can be achieved in an easy and effortless manner and the rotation angle can reach at least 180 degrees.