Multi-joint Synchronous Rotary Axle with Integrated Toothed Plate
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Solution Overview
Problem
Conventional multi-joint synchronous rotary axle structures for electronic devices face issues with coordination and smooth operation due to uneven spindle support, limited rotation degrees, and complexity in design, leading to difficulties in achieving accurate and smooth opening and closing of electronic apparatuses like notebooks.
Innovation Solution
A multi-joint synchronous rotary axle structure featuring a middle shaft with two parallel side shafts, first and second synchronous actuating assemblies connected in a reverse link relationship, and a two-way shaft plate for torsion balance, along with a one-way shaft plate for supporting turning angles, simplifies the torsion supply and reduces part complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple toothed plates are used to achieve better transmission and torsion support, then the turning angle and support strength are improved, but the number of parts increases and quality control becomes difficult
Solution Approach 1:
The patent combines multiple toothed plates into a single integrated toothed plate structure that provides the necessary torsion support and transmission functionality. This merging reduces the number of separate parts while maintaining the required strength and turning angle capabilities, directly resolving the contradiction between support strength and device complexity.
2Adaptability or versatility
If multiple toothed plates are used to achieve better transmission, then the turning angle is increased, but lubricant leakage becomes more likely and quality control is difficult
Solution Approach 1:
By integrating multiple toothed plates into one piece, the patent eliminates the interfaces between separate components where lubricant could leak. The single integrated structure maintains full turning angle capability while preventing lubricant leakage paths that would exist in multi-component designs.
3Strength
If two opposing pivotal devices are used, then the support force is improved, but the coordination between spindles is poor and rotation is limited
Solution Approach 1:
The patent merges the functionality of two separate pivotal devices into a single integrated pivotal device with a unified spindle system. This integration ensures that both spindles are coordinated through the same rotational axis, eliminating coordination problems while maintaining the support force benefits of having opposing pivotal points.
4Device complexity
If conventional pivotal devices are used, then the structure is simple, but the operation smoothness and accuracy are insufficient
Solution Approach 1:
The patent integrates multiple functional elements (toothed plates for torsion, synchronous actuating assemblies for coordination, link members for motion transfer) into a unified pivotal device structure. This integration achieves smooth and accurate operation through coordinated movement of all components while maintaining relative structural simplicity compared to using multiple separate devices.
Data Source
AI summary
A multi-joint synchronous rotary axle structure includes a middle shaft and two parallel side shafts at two sides of the middle shaft. A first synchronous actuating assembly and a second synchronous actuating assembly are provided at two opposite positions of the middle shaft and the side shafts, which are connected in a reverse link relationship. The two side shafts can be rotated about the middle shaft to generate a synchronous reverse turning. A two-way shaft plate is provided between the middle shaft and each of the side shafts to provide the torsion of tuning so as to form a compact multi-joint synchronous rotary axle structure.