Hinge Assembly Hollow Axles Orientation Transition

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Solution Overview

Problem

Existing computing devices with clamshell form factors face challenges in maintaining optimal orientation and airflow while transitioning between closed and tablet orientations, due to limitations in hinge assembly design and component thickness ratios.

Innovation Solution

The computing device incorporates a hinge assembly with hollow axles and coupling mechanisms, such as gears and belts, that allow for adjustable rotational ratios and offset axles, enabling smooth transitions between orientations while maintaining structural integrity and airflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the chassis includes feet on first and second sides with electrical components positioned closer to one side, then the device can maintain stable orientation and improve airflow, but the device complexity increases due to asymmetric component layout and hinge assembly design

Engineering Contradiction:
Improveorientation stabilityVSAvoidchassis structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies asymmetry by positioning electrical components closer to one side rather than symmetrically distributing them. The feet are also asymmetrically positioned on first and second sides, creating an unbalanced layout that optimizes airflow and orientation stability while accepting increased structural complexity as a trade-off.

Inventive Principle:
Principle #4Asymmetry

2Ease of operation

If the hinge assembly uses hollow axles and coupling mechanisms with offset axles, then the device can transition smoothly between closed and tablet orientations, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveorientation transitionVSAvoidaxle alignment
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The hinge assembly is segmented into multiple independent components including hollow axles, coupling mechanisms, and offset axles. This segmentation allows each component to be manufactured and assembled separately, facilitating smooth transitions between orientations while managing the complexity of precise alignment through modular construction.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Coupling mechanisms serve as intermediaries between the hollow axles and offset axles, enabling smooth transmission of motion and force during orientation transitions. These intermediary components buffer the precision requirements by providing controlled engagement and disengagement points.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the hinge assembly allows flexible movement for various orientations, then the device adaptability improves, but the structural integrity may be compromised

Engineering Contradiction:
Improveorientation flexibilityVSAvoidhinge assembly
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The hinge assembly employs dynamic design with hollow axles and coupling mechanisms that allow flexible movement between different orientations. The structure transitions from rigid to flexible as needed, maintaining strength in closed position while enabling adaptability during orientation changes.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3435197B1Hinge assembly
Publication Date: 2020.01.22 LENOVO (SINGAPORE) PTE LTD
  • EP3435197B1 patent drawingFigure 1
  • EP3435197B1 patent drawingFigure 2
  • EP3435197B1 patent drawingFigure 3

AI summary

A device can include a first housing that includes a first thickness; a second housing that comprises a second thickness; and a hinge assembly that couples the first and second housings where the hinge assembly includes two hollow axles operatively coupled to the second housing; a coupling mechanism that couples the two hollow axles; two axles, each received by a respective bore of one of the hollow axles, operatively coupled to the first housing; and a coupling mechanism that couples the two axles.