Friction Hinge With Segmented Resistance Stages For Device Orientation
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Solution Overview
Problem
Mobile computing devices lack effective solutions for transitioning from handheld use to other orientations without compromising their mobile aesthetic, as existing hinges often provide inadequate support and resistance for various usage scenarios.
Innovation Solution
A friction hinge with multiple friction stages, allowing the support component to be adjustably attached to a computing device, providing different frictional resistances based on activity mechanisms to accommodate various orientations and usage scenarios, including an emergency release position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional hinge mechanism is used to support the mobile device in non-handheld orientations, then the device can be used in multiple orientations, but the mobile aesthetic is compromised and the hinge provides inadequate support and resistance
Solution Approach 1:
The hinge mechanism is divided into multiple friction stages, with each stage providing different frictional resistance characteristics. The first friction stage engages at smaller angles while the second friction stage engages at larger angles, creating segmented resistance zones that collectively support multiple orientations without requiring a complex overall structure.
Solution Approach 2:
Different portions of the hinge mechanism are designed with different frictional properties. The first and second friction stages have distinct friction coefficients and engagement characteristics, allowing each local region to provide optimized resistance for specific angle ranges, thereby achieving versatile support with minimal overall complexity.
2Reliability
If a single friction stage is used in the hinge, then the structure is simpler, but the hinge cannot provide adequate resistance across all usage angles
Solution Approach 1:
The hinge mechanism changes friction parameters across different angle ranges. The first friction stage provides appropriate resistance for smaller angles, while the second friction stage provides different resistance characteristics for larger angles. This parameter variation ensures reliable position stability throughout the entire range of motion without requiring excessive structural complexity.
3Ease of operation
If friction resistance is uniformly applied across all angles, then the hinge structure is simpler, but the device cannot maintain desired positions across different usage scenarios
Solution Approach 1:
The hinge mechanism dynamically adjusts frictional resistance based on the operating angle. As the hinge moves through different angle ranges, different friction stages are activated, providing dynamically adapted resistance that facilitates easy adjustment during movement while maintaining stable positions when stationary at various usage angles.
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 the computing device to maintain desired positions relative to a surface across different usage scenarios, supporting multiple orientations while ensuring stability and ease of use, and preventing accidental collapse through increasing resistance to opening as the angle becomes more shallow.
Implementation Method 1
a first opening angle range in which frictional resistance to opening of the hinge is provided by a first friction mechanism of the hinge
Implementation Method 2
a second opening angle range in which frictional resistance to opening of the hinge is provided by both the first friction mechanism and a second friction mechanism of the hinge
Data Source
Figure 1
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AI summary
A friction hinge is described. In at least some implementations, the described friction hinge enables a support component to be adjustably attached to an apparatus, such as a computing device. According to various implementations, a friction hinge includes different friction stages where movement of the hinge is based on different activity mechanisms.