Foldable Hinge Housing Layout for a Thinner Folded Phone

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Solution Overview

Problem

Conventional foldable mobile phones are thick in the folded state, leading to poor appearance and handling experience.

Innovation Solution

A foldable electronic device with a hinge apparatus connecting two housings, featuring a flexible display and uneven thickness distribution, allowing for a thin folded state and improved handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional foldable mobile phone structure is used, then the device can be folded, but the device becomes thick in folded state

Engineering Contradiction:
Improvefolding capabilityVSAvoidthickness in folded state
Core Design Contradiction:
Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent applies dimensionality change by transitioning from a traditional side-fold configuration to a top-fold configuration. The hinge apparatus is positioned at the top end of the device rather than at the side, allowing the device to fold in a different dimensional orientation. This enables the device to achieve a thinner profile in the folded state by utilizing the top surface area for folding rather than adding thickness at the sides.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent employs asymmetry in the thickness distribution of the second housing. The second housing has different thicknesses at its two ends, with the end away from the hinge apparatus being thinner. This asymmetric design allows the device to achieve an aesthetically pleasing thin appearance at the bottom end when folded, while maintaining structural integrity near the hinge apparatus where greater thickness is needed for mechanical support.

Inventive Principle:
Principle #4Asymmetry

2Ease of manufacture

If the second housing has uniform thickness, then manufacturing is simpler, but appearance experience is poor

Engineering Contradiction:
Improvehousing manufacturing simplicityVSAvoidappearance experience
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The patent applies local quality by varying the thickness of the second housing at different locations. Specifically, the second housing has a first thickness at the end close to the hinge apparatus and a second, smaller thickness at the end away from the hinge apparatus. This localized variation in thickness allows the device to achieve an aesthetically pleasing appearance with a thin bottom end, while maintaining sufficient structural strength near the hinge mechanism where it is most needed.

Inventive Principle:
Principle #3Local quality

3Length of stationary object

If the device is made thin in folded state, then appearance and handling are improved, but structural strength may be compromised

Engineering Contradiction:
Improvethickness in folded stateVSAvoidstructural strength
Core Design Contradiction:
Length of stationary objectVSStrength

Solution Approach 1:

The patent employs asymmetry in the thickness distribution of the second housing. The second housing has different thicknesses at its two ends, with the end away from the hinge apparatus being thinner. This asymmetric design allows the device to achieve an aesthetically pleasing thin appearance at the bottom end when folded, while maintaining structural integrity near the hinge apparatus where greater thickness is needed for mechanical support.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent applies local quality by varying the thickness of the second housing at different locations. Specifically, the second housing has a first thickness at the end close to the hinge apparatus and a second, smaller thickness at the end away from the hinge apparatus. This localized variation in thickness allows the device to achieve an aesthetically pleasing appearance with a thin bottom end, while maintaining sufficient structural strength near the hinge mechanism where it is most needed.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4016971B1Electronic device
Publication Date: 2025.11.26 HUAWEI TECH CO LTD
  • EP4016971B1 patent drawingFigure 1~2
  • EP4016971B1 patent drawingFigure 3~4
  • EP4016971B1 patent drawingFigure 5~6

AI summary

This application provides an electronic device, including a first housing, a hinge apparatus, a second housing, and a flexible display, where two opposite ends of the hinge apparatus are respectively connected to the first housing and the second housing, and the hinge apparatus can be deformed, so that the first housing is folded or unfolded relative to the second housing, and the flexible display is mounted on the first housing and the second housing; and a thickness of one end that is of the second housing and that is close to the hinge apparatus is different from a thickness of one end that is of the second housing and that is away from the hinge apparatus, and in a folded state, a thickness of one end that is of the electronic device and that is close to the hinge apparatus is different from a thickness of one end that is of the electronic device and that is away from the hinge apparatus. The electronic device in this application is thin when being folded. This implements good appearance experience, and is conducive to holding the electronic device by a hand.