Replaceable Corner Casing Frame for Modular Device Expansion

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Solution Overview

Problem

Conventional electronic devices have limited functionality due to the fixed position of optical disk drives, which cannot be replaced or expanded by other function components, restricting customer options.

Innovation Solution

A casing with a replacement structure that includes an assembly space at the vertical intersection of two side edges, allowing a frame to substitute for part of the casing body, enabling quick and easy installation and removal of expansion devices like optical drives, hard drives, or batteries, while reducing material usage and maintaining structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an optical disk drive is installed in the electronic device, then the device can perform optical disk functions, but the space is occupied and cannot be used for function expansion components

Engineering Contradiction:
Improvefunction expansion capabilityVSAvoidspace occupation
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The electronic device is segmented into a main body and a separate replacement assembly. The optical disk drive is integrated into the replacement assembly rather than being permanently installed in the main body, allowing the space in the main body to remain available for other components while still providing optical disk functionality when needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The replacement assembly is designed to be dynamically replaceable - it can be installed when optical disk functions are needed and removed when not needed. This dynamic configuration allows the device to adapt its functionality and space usage based on requirements, transforming a static space occupation problem into a flexible solution.

Inventive Principle:
Principle #15Dynamics

2Loss of substance

If a frame is installed in the assembly space to substitute for casing parts, then material usage is reduced, but the structural integrity may be compromised

Engineering Contradiction:
Improvematerial usageVSAvoidcasing structural integrity
Core Design Contradiction:
Loss of substanceVSStrength

Solution Approach 1:

The frame of the replacement assembly is designed to merge with and integrate into the casing body structure. When the replacement assembly is installed, its frame combines with the recessed assembly space to form a unified structural unit, maintaining overall structural integrity while using less material than a completely solid casing would require.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The frame serves multiple functions: it provides structural support, creates the accommodating space for expansion devices, and integrates with the casing body. This multi-functionality allows a single component to fulfill several roles, reducing the need for additional materials while maintaining strength.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If the assembly space is provided in a recessed manner at the vertical intersection of two side edges, then alignment and installation are facilitated, but the casing design becomes more complex

Engineering Contradiction:
Improvealignment and installation easeVSAvoidcasing design complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The assembly space is positioned asymmetrically at the vertical intersection of two side edges rather than in a central or symmetric location. This asymmetric positioning naturally guides alignment during installation, as the unique corner position provides inherent orientation cues, simplifying the installation process despite the unconventional location.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentEP4231117B1Casing with replacement structure and electronic device
Publication Date: 2026.05.20 GETAC TECH CORP
  • EP4231117B1 patent drawingFigure 1
  • EP4231117B1 patent drawingFigure 2
  • EP4231117B1 patent drawingFigure 3

AI summary

A casing with a replacement structure includes the casing and a replacement assembly. The casing includes a casing body and an assembly space. The assembly space is provided in a recessed manner at the casing body and is located at a vertical intersection of two side edges of the casing body. The replacement assembly includes a frame, which is installed in the assembly space and encloses with the casing body to form an accommodating space.