Laptop Hinge Linkage Using Linear Components for Longer Service Life
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Solution Overview
Problem
The existing rotating shaft connection mechanisms in laptop computers have a limited service life and durability due to the requirement for precise alignment and high rotation angles, which affects the opening and closing performance.
Innovation Solution
A device with a rotating shaft connection mechanism that includes multiple rotating shaft components and movable linear components with different rotation radii, generating a torsion force to reduce the rotation angle and improve durability, allowing for flexible placement and increased motion direction without the need for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotating shaft center coincides with the rotation center of the second body, then the opening angle is maximized, but the service life of the rotating shaft deteriorates due to high rotation angles
Solution Approach 1:
The patent introduces a connection component with linear components as an intermediary between the rotating shaft and the second body. This mediator transforms the direct rotational motion into a combination of rotation and linear displacement, reducing the rotation angle of the rotating shaft while still achieving the required opening angle of the second body.
Solution Approach 2:
The patent changes the motion parameter from pure rotation to combined rotation and linear displacement. By allowing the linear components to extend and retract, the system converts part of the rotational requirement into linear motion, thereby reducing the rotation angle parameter of the rotating shaft and improving its service life.
2Ease of operation
If the rotating shaft center coincides with the rotation center of the second body, then the opening angle is maximized, but the manufacturing precision requirement deteriorates due to strict alignment needs
Solution Approach 1:
The connection component acts as a mediator that decouples the precise alignment requirement from the opening angle achievement. The linear components provide adjustment capability, allowing the rotating shaft center to be positioned independently from the second body's rotation center while still achieving the desired opening angle.
Solution Approach 2:
The patent introduces dynamic adjustment capability through the extendable linear components. This allows the system to adapt to manufacturing tolerances and positioning variations, transforming a static precision requirement into a dynamically adjustable configuration that is more tolerant of manufacturing variations.
3Ease of operation
If the rotating shaft center coincides with the rotation center of the second body, then the opening angle is maximized, but the device complexity deteriorates due to fastening requirements
Solution Approach 1:
The connection component serves multiple functions: it connects the rotating shaft to the second body, provides linear displacement capability, and allows for positioning adjustment. This multi-functionality reduces the need for separate fastening mechanisms and simplifies the overall structure compared to a direct rigid connection requiring precise alignment and multiple fasteners.
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 solution effectively reduces the rotation angle of the rotating shaft, enhances the service life and durability of the connection mechanism, and improves the opening and closing performance of laptop computers by generating a torsion force through friction, while allowing for a more flexible placement and increased motion direction.
Implementation Method 1
friction is generated between the rotating shaft and the linear component that is wound around an outer wall of the rotating shaft. This generates a torsion force
Data Source
AI summary
A device includes a first body, a second body, and a rotating shaft connection mechanism configured to connect the first body and the second body. The rotating shaft connection mechanism includes N rotating shaft components, a connection component, and N movable linear components corresponding to the N rotating shaft components. An ith linear component is wound around a rotating shaft of a corresponding ith rotating shaft component. A segment of extending linear component and a segment of extending linear component separately pass through the connection component. When the second body rotates relative to the first body, the segment of linear component and the segment of linear component have different rotation radii.