Multistage Hinge Spring Friction Transition
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Solution Overview
Problem
Mobile computing devices lack efficient mechanisms to transition between handheld and tabletop usage modes without compromising their mobile aesthetic, as existing hinges often require awkward adaptations and do not provide sufficient support for various orientations.
Innovation Solution
A multistage hinge mechanism that integrates a spring-activated mechanism and a friction mechanism, allowing the kickstand to be adjusted through different activity stages based on angle positions, providing a range of orientations and usage scenarios while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional hinge mechanism is used to support tabletop usage, then the device can be positioned at various angles, but the mobile aesthetic is compromised and the design becomes awkward
Solution Approach 1:
The kickstand is nested within the device housing, allowing it to be stored inside the device body when not in use and deployed outward when needed. This nesting approach maintains the sleek mobile aesthetic while providing tabletop support functionality, resolving the contradiction between adaptability and appearance.
Solution Approach 2:
The hinge mechanism transitions between different operational stages dynamically: initially controlled by spring force for compact positioning, then transitioning to friction-controlled stages for stable angled positioning. This dynamic behavior allows the system to adapt to different usage scenarios while maintaining aesthetic appeal in handheld mode.
2Ease of operation
If a spring hinge mechanism is used to enable rotation and preset positions, then automatic opening and friction control are achieved, but the mechanism complexity increases
Solution Approach 1:
The patent combines multiple functions into a single integrated hinge mechanism: the spring provides both the force for automatic opening and the reset capability, while friction elements provide positioning stability. This merging of functions reduces the need for separate mechanisms and simplifies the overall design despite the multifunctional requirements.
Solution Approach 2:
The spring mechanism automatically opens the kickstand when deployed and resets it when released, without requiring manual intervention. The friction elements self-adjust to provide stable positioning at different angles. This self-service behavior achieves ease of operation while keeping the control mechanism relatively simple.
3Stability of the object's composition
If a friction mechanism is used to control hinge movement at different angles, then stable positioning is achieved, but the friction control complexity increases
Solution Approach 1:
The friction control is applied locally at specific contact points within the hinge mechanism rather than throughout the entire structure. Friction elements are strategically positioned to provide stability only when needed for positioning, while allowing smooth movement during transitions. This localized approach achieves position stability without requiring complex friction control systems.
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 seamless transition between handheld and tabletop modes with adjustable support for various device orientations, enhancing user interaction and functionality without detracting from the mobile device's aesthetic.
Implementation Method 1
US 7,097,874 B2 describes a mobile telephone having a hinge with a helical spring that provides both snap opening or automatic opening upon activation of a release means
Implementation Method 2
the hinge mechanism includes a friction mechanism (e.g., a 'friction engine') that controls movement of the hinge over a different range of angles
Data Source
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AI summary
A multistage hinge is described. In at least some embodiments, the described hinge mechanism enables a support component to be adjustably attached to an apparatus, such as a computing device. According to various embodiments, a hinge mechanism includes different activity stages where movement of the hinge is based on different activity mechanisms. For instance, the hinge mechanism includes a spring-activated mechanism that controls movement of the hinge over a particular range of angles. Further, the hinge mechanism includes a friction mechanism (e.g., a "friction engine") that controls movement of the hinge over a different range of angles.