Multiaxial Hinge for Flexible Display Protection
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Solution Overview
Problem
Conventional hinges damage flexible and touch-operable display sheets when bent, and apply uneven force during touch input, leading to potential damage and operational inefficiencies in electronic devices with large, flexible displays.
Innovation Solution
A multiaxial hinge design featuring multiple hinge shafts, brackets, coupling members, a synchronous rotation mechanism, stopper means, friction mechanisms, and drawing mechanisms that allow for synchronized opening and closing of casings while preventing excessive curvature and ensuring even force distribution on flexible display sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional hinges are used to couple the first casing and the second casing, then the casings can open and close, but the flexible display sheet is bent too much when closed, causing damage to the display sheet
Solution Approach 1:
The hinge is divided into multiple independent hinge shafts (first hinge shaft, second hinge shaft, third hinge shaft) that can rotate relative to each other. This segmentation allows the hinge to achieve the opening and closing function while distributing the bending stress across multiple segments, preventing excessive bending of the display sheet when closed.
2Ease of operation
If conventional hinges are used to couple the first casing and the second casing, then the casings can open and close, but the display sheet with rugged surfaces experiences uneven force application during touch input, causing damage
Solution Approach 1:
The hinge structure is designed with specific local features including the arrangement of multiple hinge shafts and the connection between brackets and coupling members. This local quality design ensures that force is distributed evenly across the hinge structure during touch input, preventing localized stress concentration on the display sheet surface.
3Reliability
If a multiaxial hinge with multiple hinge shafts and synchronous rotation mechanism is used, then the casings can open and close synchronously with controlled bending, but the device complexity increases
Solution Approach 1:
The hinge structure employs a nested arrangement where the first hinge shaft, second hinge shaft, and third hinge shaft are positioned concentrically or in a compact nested configuration. The brackets and coupling members are also nested to achieve a compact overall structure. This nesting reduces the space occupied by the complex multiaxial hinge while maintaining its protective function.
4Adaptability or versatility
If the first casing and the second casing are covered entirely with flexible display sheet, then a large-screen display with touch-panel function is achieved, but the display sheet is more susceptible to damage from bending and uneven force
Solution Approach 1:
The hinge is designed with multiple degrees of freedom through the multiaxial configuration, allowing dynamic adjustment of the bending path and curvature during opening and closing operations. The synchronous rotation mechanism dynamically coordinates the movement of different hinge shafts to minimize stress on the flexible display sheet while maintaining full coverage.
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 multiaxial hinge design prevents damage to flexible display sheets by allowing synchronized and controlled opening and closing of casings, maintaining a flush state and ensuring efficient operation, thus enhancing the durability and usability of electronic devices with large, flexible displays.
Implementation Method 1
a friction mechanism either all in cooperation or each independently from each other are provided on each of the hinge shafts
Data Source
AI summary
In order to provide a multiaxial hinge suitably used in an electronic device, such as a notebook PC having a flexible display sheet, and an electronic device using such a multiaxial hinge, the multiaxial hinge is a multiaxial hinge used as attached below a flexible and touch-operable display sheet for opening and closing the first casing and the second casing, the display sheet being attached so as to cover both inner surfaces of the both casings, several hinge shafts are provided, wherein a first bracket attached to the first casing and a second bracket attached to the second casing are coupled together via several coupling parts, and a synchronous rotation unit, a stopper and a friction unit either all in cooperation or one independently from other are provided on each of the hinge shafts, the multiaxial hinge is designed such that a bent portion is formed on the inner surfaces in a closed state of the first casing and the second casing, and that the first casing and the second casing are flush in a fully opened state of the casings.