Hinge Device with Curved Grooves and Elastic Feedback for Stable Wide-Angle Rotation
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Solution Overview
Problem
Conventional hinge devices for electronic device stands have limited rotational angles, leading to instability when used at larger angles, causing mobile devices to slide and bother users.
Innovation Solution
A hinge device comprising two half-housings with extending plates, a torque-stroke controlling mechanism, sliding members, an elastic member, and a stop sheet, allowing for a large rotational angle and stable positioning through a combination of curved grooves and sliding rails, enabling the stand to be opened to a maximal angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional hinge devices are used with high freedom mechanism, then the rotational angle is limited to a small angle, but the mechanism becomes unstable when used at larger angles
Solution Approach 1:
The hinge device is divided into multiple modules: a first extending module with half-members, a second extending module with half sliding members, and intermediate sliding components. This segmentation allows the hinge to achieve large rotational angles through coordinated movement of multiple segments while maintaining stability through their interconnected design.
Solution Approach 2:
The half sliding members feature curved guiding tabs that engage with curved grooves in the half-housings. This curvature enables smooth rotational movement over a large angle range while the geometric constraints of the curved surfaces maintain mechanical stability and prevent excessive deviation from the intended rotation path.
2Ease of operation
If the stand is opened to larger angles to prevent sliding, then the rotational angle increases, but the mechanism becomes less stable
Solution Approach 1:
The elastic member provides continuous feedback force that biases the second extending module, automatically adjusting the position and maintaining stability of the hinge mechanism. This elastic feedback compensates for gravitational effects and external forces acting on the device at various angles.
Solution Approach 2:
The sliding device with rails and curved grooves acts as an intermediary mechanism between the first and second extending modules. It mediates the transition between different angular positions, ensuring smooth and stable movement while enabling the stand to reach larger operational angles.
3Adaptability or versatility
If a mechanism with high freedom is used to allow large rotation, then the rotational angle increases, but the device becomes unstable and causes sliding
Solution Approach 1:
The hinge device changes its effective degrees of freedom at different stages of rotation. The first extending module handles initial rotation with one degree of freedom, while the second extending module with curved guiding tabs provides constrained movement for large angle adjustments. This parameter change in freedom maintains stability throughout the entire rotational range.
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
The hinge device provides a stable and adjustable mechanism for electronic device stands, allowing for a wide range of angles, preventing sliding and enhancing user convenience by maintaining the device upright.
Implementation Method 1
an elastic member having one end disposed between the half-housings and the other end biasing the second extending module
Data Source
AI summary
A hinge device includes a housing comprising two half-housings, a first extending module comprising two half-members disposed in the housing, a second extending module comprising two half sliding members and disposed on an outer side of the first extending module, a sliding device disposed between the first extending module and the second extending module, an elastic member disposed between the two half housings, and a stop sheet disposed between the half-housings and having one end facing a bottom of the second extending module.