Dual Axis Slider Hinge for Compact Synchronized Flipping
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Solution Overview
Problem
Conventional dual axis hinges for portable electronic devices are large and heavy due to the use of pivot assemblies and gears, which hinder the goal of reducing device size and weight.
Innovation Solution
A dual axis slider hinge design featuring a fixing base with sockets and sliders, along with a link unit, that enables synchronized flipping movements of holders without the need for heavy or large gears, utilizing straight and curved tracks for sliding and pivoting mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pivot assemblies and gears are used in conventional dual axis hinges, then synchronized rotation function is achieved, but the hinge becomes large and heavy
Solution Approach 1:
The patent replaces the traditional mechanical gear system with a slider mechanism that moves along guide rails. The connecting block with connecting pins substitutes for gears, achieving synchronized rotation through linear sliding motion constrained by the guide rails and connecting pins, thereby reducing weight while maintaining the synchronization function
Solution Approach 2:
The patent extracts and eliminates the heavy gear components from the hinge structure. By removing the gears and using a simplified slider-connecting block mechanism with guide rails, the design achieves the same synchronized rotation function with significantly reduced weight and complexity
2Reliability
If pivot assemblies and gears are used in conventional dual axis hinges, then synchronized rotation function is achieved, but the hinge volume increases
Solution Approach 1:
The patent substitutes the bulky gear mechanism with a compact slider system that moves along guide rails. The connecting block with pins provides the necessary mechanical linkage in a much smaller volume, achieving synchronized rotation without the space requirements of traditional gears
Solution Approach 2:
The hinge is segmented into distinct functional components: guide rails for motion constraint, sliders for linear movement, and connecting blocks with pins for synchronization. This segmentation allows each component to be optimized for minimal volume while maintaining the overall synchronized rotation function
3Reliability
If conventional dual axis hinge structure is used, then synchronized rotation is achieved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the complex gear manufacturing requirements and replaces them with simpler slider and guide rail components. The connecting blocks with pins can be manufactured using standard machining processes, reducing manufacturing cost while maintaining the synchronized rotation function
Data Source
AI summary
A dual axis slider hinge has a fixing base, two sliders, two holders, and a link unit. The fixing base has two sockets and a positioning hole, and each of the two sockets has two straight tracks. Each of the sliders has two lateral sliding grooves, a holder connecting portion, and an inner sliding slot. The sliders are respectively mounted in the sockets, and the lateral sliding grooves engage with the straight tracks. Each of the holders has a connecting plug and a combining portion, and the connecting plug is pivotably connected to the holder connecting portion. The link unit has two connecting portions and a rotating portion. Each of the connecting portions has a connecting pin. The connecting pins are movably mounted in the inner sliding slots respectively, thereby synchronizing the two holders via the link unit to flip simultaneously.