Dual Hinge Assembly Stabilizing Touch Display
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Solution Overview
Problem
Hinges in portable computing devices with touch displays face difficulty in supporting the operational forces while allowing the device bodies to expand, leading to wobbling and unstable operation.
Innovation Solution
A hinge assembly comprising a first hinge and a second hinge, where the second hinge is assembled to the first hinge and features positioning surfaces that lean against the back surface of the display, providing additional support and stabilizing the display when rotated relative to the arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single hinge is used to connect the display and arm, then the structure is simple and easy to manufacture, but the hinge cannot simultaneously support the operational forces and allow expansion, causing wobbling and instability
Solution Approach 1:
The hinge assembly is divided into two functional components: a first hinge that enables rotation between the display and arm, and a second hinge that provides positioning and support. This segmentation allows each component to specialize in one function, resolving the contradiction between structural simplicity and stability.
Solution Approach 2:
The second hinge acts as an intermediary element between the first hinge and the display back surface. It mediates the connection by providing positioning surfaces that lean against the display, thereby stabilizing the display while allowing the first hinge to perform its rotation function.
2Reliability
If the hinge is designed to support operational forces on the touch display, then display stability is improved, but the ability to expand the machine bodies smoothly is reduced
Solution Approach 1:
By separating the expansion function (first hinge) from the support function (second hinge), the system can optimize each for its specific purpose. The first hinge ensures smooth expansion while the second hinge provides stability during operation.
Solution Approach 2:
The second hinge provides localized support at specific positioning surfaces that lean against the display back surface. This local quality approach allows support where needed without interfering with the overall expansion motion.
3Ease of operation
If the hinge allows easy expansion of machine bodies, then ease of operation is improved, but the display becomes wobbly and unstable during touch operations
Solution Approach 1:
The hinge assembly segments the functions so that the first hinge handles expansion while the second hinge handles stability. This resolves the contradiction by assigning different responsibilities to different components.
Solution Approach 2:
The second hinge serves as an intermediary that decouples the expansion motion from the display stability requirement, allowing easy expansion while preventing wobbling through its positioning surfaces.
Data Source
AI summary
A hinge assembly used for connecting between an arm and a display of an electronic device is provided. The display has a back surface. The hinge assembly includes a first hinge and a second hinge. The first hinge is pivoted between the display and the arm, such that the display is rotated relative to the arm. The second hinge is assembled to the first hinge. The second hinge has at least one positioning surface leaning against the back surface of the display. An electronic device using the hinge assembly is also provided.