Compact Hinge Assembly With Interference-Fit Damping
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Solution Overview
Problem
Existing hinge assemblies in foldable electronic devices, such as notebook computers, have a complex structure and large volume, hindering thinning and lightening of the device.
Innovation Solution
A hinge assembly with a base, rotating base, and fastening base, featuring a rotating shaft in interference fit with a shaft hole, and a simplified rotary connection mechanism that reduces the number of components and overall volume, while providing damping force and improved installation precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional hinge assembly structure is used, then the rotational connection function is achieved, but the overall volume and number of components increase
Solution Approach 1:
The patent merges multiple components into an integrated hinge assembly structure where the rotating shaft, fastening base, and damping mechanism are combined into a unified design. The rotating shaft is directly integrated with the fastening base, eliminating the need for separate connection components, and the damping structure is incorporated within the existing components rather than as an add-on element.
Solution Approach 2:
The hinge assembly components perform multiple functions simultaneously. The rotating shaft serves both as a rotational connection element and as a structural support component. The fastening base provides both mechanical attachment and houses the damping mechanism. This multi-functionality reduces the need for dedicated separate components for each function.
2Device complexity
If a traditional hinge assembly structure is used, then the rotational connection function is achieved, but the weight of the electronic device increases
Solution Approach 1:
The patent merges multiple components into an integrated hinge assembly structure where the rotating shaft, fastening base, and damping mechanism are combined into a unified design. The rotating shaft is directly integrated with the fastening base, eliminating the need for separate connection components, and the damping structure is incorporated within the existing components rather than as an add-on element.
Solution Approach 2:
The patent eliminates unnecessary components from traditional hinge assemblies, discarding redundant parts that do not contribute to the core functions. By recovering and reusing the space and material that would have been occupied by separate components, the design achieves weight reduction while maintaining functional integrity.
3Volume of moving object
If a simplified hinge assembly is used, then the volume is reduced, but the assembly precision and damping effect must be maintained
Solution Approach 1:
The patent optimizes geometric parameters of the rotating shaft and shaft hole to achieve precise interference fit. The diameter tolerance, length, and fit allowance are carefully controlled to ensure proper assembly precision. The damping coefficient and friction characteristics are adjusted through parameter optimization to maintain the desired damping effect within the compact structure.
Solution Approach 2:
The patent applies different quality requirements to different regions of the hinge assembly. The rotating shaft and shaft hole interfaces have high precision requirements for interference fit, while other non-critical areas have relaxed tolerances. The damping structure is concentrated at specific locations where it is most effective, rather than uniformly distributed throughout the assembly.
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 simplified hinge assembly reduces the overall volume and weight of the electronic device, enhances assembly efficiency, and improves user experience by allowing smoother rotation and maintaining the display position, facilitating thinning and lightening.
Implementation Method 1
the rotating shaft and the shaft hole rotate relatively to each other, a friction force generated when the rotating shaft and the shaft hole rotate relatively to each other can form a damping force
Data Source
AI summary
Embodiments include a hinge assembly and an electronic device. The hinge assembly includes a base, a rotating base, a rotating assembly, and a fastening base. The base is configured to be fixedly connected to a first portion. The rotating base is configured to be fixedly connected to a second component. The rotating assembly includes a rotating shaft and a through hole, one of the rotating shaft and the through hole is disposed on the base, the other of the rotating shaft and the through hole is disposed on the rotating base, and the rotating shaft is inserted into the through hole, so that the base is rotatably connected to the rotating base. A shaft hole is provided on the fastening base, an end portion of the rotating shaft is inserted into the shaft hole, and the rotating shaft is in interference fit with the shaft hole.