Sequential Hinge Axle Control via Cam-Latch Mediation
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Solution Overview
Problem
Existing foldable electronic devices with two axles that cannot revolve in sequence hinder smooth unfolding and usage, impacting user experience.
Innovation Solution
A hinge with a three-stage switching structure, featuring two revolving axles, cams, and latches that allow sequential revolution, enabling smooth folding and unfolding of electronic device plates from 0 to 360 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two axles are provided in the hinge to enable 360-degree folding, then the device can achieve multiple configurations (laptop and tablet modes), but the two axles cannot revolve in sequence which makes the unfolding operation not smooth
Solution Approach 1:
The patent introduces latches as intermediary components that mediate between the two axles. The latches sequentially engage with the axles through cam mechanisms, controlling which axle can rotate at any given time. This intermediary control system enables smooth sequential revolution while maintaining the versatility of multiple device configurations.
Solution Approach 2:
The patent implements dynamic control of the hinge system through the latch-cam mechanism. The latches dynamically switch between locking and unlocking states as the hinge unfolds, allowing the system to transition from one degree of freedom to another in a controlled sequence. This dynamic behavior ensures smooth operation while maintaining adaptability.
2Adaptability or versatility
If two axles are provided in the hinge to enable 360-degree folding, then the device can achieve multiple configurations, but the structure becomes more complex
Solution Approach 1:
The patent merges multiple functions into the hinge structure. The cams are integrated with the axles, and the latches serve both as locking mechanisms and as control elements for sequential revolution. The connecting bracket integrates multiple restriction blocks and cam structures. This merging reduces the need for separate control mechanisms, thereby managing complexity while achieving versatility.
Solution Approach 2:
The latch mechanism serves multiple functions: it locks the hinge at specific angles, controls sequential axle revolution, and enables transitions between different device configurations. The cam structures serve both as geometric constraints and as actuation mechanisms. This multi-functionality reduces the number of separate components needed, managing structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables smooth sequential revolution of axles, improving the user experience by allowing seamless transitions between device configurations, such as laptop and tablet modes.
Implementation Method 1
The first revolving axle is provided with a first cam and a second cam. The first cam cooperates with the first restriction block in restricting a revolving stroke of the first revolving axle. The second revolving axle is provided with a third cam and a fourth cam.
Implementation Method 2
The first latch is slidably disposed between the first cam and the third cam. The first latch has a first end and a second end respectively corresponding to the first cam and the third cam.
Data Source
AI summary
A hinge includes a connecting bracket, first and second revolving axles, and first and second latches. The connecting bracket has first and second restriction blocks. The first and second revolving axles are parallel with each other and pivotally disposed on the connecting bracket. The first revolving axle has first and second cams. The first cam cooperates with the first restriction block in restricting a revolving stroke of the first revolving axle. The second revolving axle has third and fourth cams. The third cam cooperates with the second restriction block in restricting a revolving stroke of the second revolving axle. Peripheries of the first to the fourth cams respectively have a convex portion and a concave portion. The first latch is slidable between the first cam and the third cam. The second latch is slidable between the second cam and the fourth cam.