Dual Axis Hinge for Portable Terminal Orientation
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Solution Overview
Problem
Conventional portable terminals are inconvenient for multimedia services due to their design, which prioritizes voice communication, making it difficult to view moving image files effectively.
Innovation Solution
A dual axis hinge device is integrated into the portable terminal, allowing the housing to be opened or closed in two directions, with hinge axes perpendicular to each other, enabling the second housing to be rotated independently about each axis, thereby enhancing user convenience and accommodating different orientations for multimedia use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional portable terminal with a single hinge axis is used, then the structure is simple and reliable, but the terminal cannot be opened in multiple directions, making it inconvenient for multimedia services
Solution Approach 1:
The patent introduces a second hinge axis perpendicular to the first hinge axis, transforming the single-axis rotation into a dual-axis rotation system. This allows the second housing to be opened not only in the longitudinal direction (first axis) but also in the lateral direction (second axis), adding dimensional flexibility to the terminal's opening movements and enabling multimedia service orientations
2Adaptability or versatility
If the display device is sized larger in the longitudinal direction, then it is suitable for voice communication, but it is inconvenient to view moving image files
Solution Approach 1:
The patent makes the terminal's display orientation dynamic by introducing a second hinge axis that allows the second housing to rotate laterally. This enables the display to adapt its orientation based on the service type: longitudinal opening for voice communication and lateral opening for multimedia viewing, transforming a static display orientation into a dynamic, service-adaptive configuration
3Reliability
If the second housing is rotated about the first hinge axis to the open position, then voice communication function is enabled, but rotation about the second hinge axis is not limited
Solution Approach 1:
The patent applies preliminary anti-action by using the first housing and hinge structure to preemptively constrain the second housing's movement. When the second housing is opened about the first hinge axis, the physical structure of the first housing and the hinge mechanism itself prevent simultaneous or unintended rotation about the second hinge axis, ensuring functional stability without requiring additional active control systems
Data Source
AI summary
A portable terminal includes: a first housing; a second housing rotatably connected to the first housing to open or close the housings. A hinge device interconnects the first and second housings. The hinge device provides first and second hinge axes extending perpendicular to each other, wherein the hinge device limits the rotation of the second housing about the second hinge axis when the second housing has been rotated about the hinge axis to the open position, and the hinge device limits the rotation of the second housing about the first hinge axis when the second housing has been rotated to the open position. The portable terminal with the inventive dual axis hinge device is configured in such a way that one housing can be positioned at the top side or lateral side of the other housing, whereby it is convenient to use the portable terminal and it is possible to secure structural stability and reliability.