Double-shaft hinge with parallel rotation shafts
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Solution Overview
Problem
Existing double-shaft hinges for electronic devices, such as laptops and foldable tablets, lack versatility in design, limiting user choices and functionality in simultaneous bi-directional rotation capabilities.
Innovation Solution
A double-shaft hinge design featuring parallel first and second rotation shafts with a transmission device, including a first and second transmission member connected by a third transmission member, allowing simultaneous opposite-direction rotation, utilizing mechanisms like worm gears, spiral gears, or helical gears to enhance rotational functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional single-shaft hinge is used, then the structure is simple, but the rotational functionality is limited to single-direction rotation
Solution Approach 1:
The hinge is divided into two independent rotation shafts (first rotation shaft and second rotation shaft) that can rotate in opposite directions simultaneously. Each shaft has its own transmission member (first transmission member and second transmission member) connected through a third transmission member, allowing independent bi-directional rotation while maintaining structural organization through segmentation.
Solution Approach 2:
The invention transitions from single-direction rotation to bi-directional rotation by introducing a second rotation shaft parallel to the first. This dimensional expansion allows the hinge to provide rotational functionality in multiple directions (clockwise and counter-clockwise) simultaneously, enhancing versatility without being constrained by a single rotation plane.
2Adaptability or versatility
If existing double-shaft hinge designs are used, then bi-directional rotation is achieved, but design versatility is limited
Solution Approach 1:
The transmission device is designed with universal applicability through the use of standard transmission components (worm gears, spiral gears, or helical gears) that can be configured in multiple ways. The third transmission member acts as a universal connector between the first and second transmission members, allowing the same basic structure to support various gear configurations and achieve different rotational characteristics while maintaining design versatility.
3Manufacturing precision
If complex transmission mechanisms are added to enhance rotational control, then rotation accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The third transmission member serves as an intermediary component that connects the first transmission member and second transmission member. This intermediary element simplifies the overall assembly by providing a standardized interface between the two rotation shafts, allowing for easier manufacturing and assembly while maintaining precise rotational control through the gear transmission mechanism.
Data Source
AI summary
A double-shaft hinge and an electronic device are provided. The double-shaft hinge includes a transmission device, and a first rotation shaft and a second rotation shaft in parallel with each other. The transmission device includes a first transmission member sleeved on the first rotation shaft and circumferentially fixed on the first rotation shaft, a second transmission member sleeved on the second rotation shaft and circumferentially fixed on the second rotation shaft, and a third transmission member. The third transmission member is arranged between the first transmission member and the second transmission member, and has one end engaged with the first transmission member, and another end engaged with the second transmission member. The first transmission member and the second transmission member are connected by the third transmission member to be rotatable with respect to each other in opposite directions simultaneously.