Sliding Mobile Terminal Hinge Grounding for Stable Extended Displays
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Solution Overview
Problem
Mobile terminals face challenges in maintaining a stable extended display unit without sagging and ensuring usability by preventing shifts in the center of gravity due to changes in shape, particularly when the size of the terminal is varied.
Innovation Solution
A mobile terminal design featuring a first frame and a second frame that slide relative to each other, with a rolling hinge containing conductive material, a ground pin for electrical connection, and a wireless communication module, along with a bottom frame and slide rail to support the display unit and maintain stability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display unit is extended by sliding the second frame, then the screen size is increased, but the display unit may sag and become unstable
Solution Approach 1:
The mobile terminal is divided into a first frame and a second frame that can slide relative to each other. The display unit is segmented into a fixed part coupled to the first frame and a variable part that bends around the second frame, allowing the display area to be extended while maintaining structural stability through separate supporting frames.
Solution Approach 2:
The patent introduces a sliding mechanism in the horizontal dimension, allowing the second frame to move relative to the first frame. This dimensional change enables the display unit to extend beyond the original terminal boundaries while maintaining stability through the rolling hinge mechanism that operates in a different spatial plane.
2Area of moving object
If the shape of the mobile terminal is changed by extending the display, then the screen area is increased, but the center of gravity shifts and usability deteriorates
Solution Approach 1:
The mobile terminal employs a dynamic sliding mechanism where the second frame can move relative to the first frame along guide rails. This dynamic structure allows the terminal to transition between compact and extended states, with the ground pin and ground metal ensuring stable electrical connection throughout the motion, thereby maintaining usability across different configurations.
3Adaptability or versatility
If the rolling hinge contains conductive material for antenna function, then wireless communication capability is improved, but electrical connection stability may be compromised during sliding
Solution Approach 1:
The patent introduces a ground pin and ground metal as intermediary elements to ensure stable electrical connection between the first frame and the rolling hinge containing conductive material. The ground pin fits into a groove on the ground metal during sliding, providing a reliable electrical pathway that maintains antenna functionality throughout the motion 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 design allows for a stable antenna operation and minimizes the displacement of the center of gravity, enhancing usability and reducing exposure of internal components, thus preventing foreign material entry and maintaining a flat display state.
Implementation Method 1
the rolling hinge containing a conductive material, a ground pin coupled to the rolling hinge... the ground pin contacts the ground metal in the extended mode to electrically connect the rolling hinge and the ground metal
Data Source
AI summary
Provided is a mobile terminal comprising: a first frame; a second frame which slidingly moves with respect to the first frame in a first direction to switch to an extended mode and includes a ground metal, a first side metal, and a second side metal; a display part which includes a fixed portion coupled to the front surface of the first frame and a variable portion bent to surround the second frame; a rolling hinge which is coupled to the rear surface of the variable portion and comprises a conductive material; and a ground pin which is coupled to the rolling hinge, wherein the ground pin is brought into contact with the ground metal in the extended mode to electrically connect the rolling hinge to the ground metal.