Electronic Picture Frame Assembly with Tool-Free Nested Layers

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Solution Overview

Problem

Existing electronic frames are difficult to disassemble and assemble, which complicates maintenance and affects their usability in home decoration.

Innovation Solution

A frame design that includes a first frame, a back case, and a second frame, where the frames are engaged with each other using engagement protrusions and recesses, allowing for tool-free assembly and disassembly, and featuring a second frame that surrounds the first frame and back case for protection and decoration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional fixation structures are used to assemble frame components, then connection strength is improved, but assembly and disassembly complexity increases

Engineering Contradiction:
Improveconnection strengthVSAvoidassembly complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The frame is divided into multiple separable components (first frame, back case, second frame) that can be independently assembled and disassembled. Each component has standardized engagement structures that enable tool-free assembly while maintaining connection strength, resolving the contradiction between strong fixation and assembly simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The first frame and back case are nested within the second frame, creating a hierarchical assembly structure. The engagement protrusions and recesses allow inner components to be securely held by outer components, providing strong connection while enabling sequential assembly and disassembly without complex fastening mechanisms.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Strength

If multiple frame layers are added for protection and decoration, then structural strength and aesthetics are improved, but device complexity increases

Engineering Contradiction:
Improvestructural strengthVSAvoidframe structure complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The frame structure employs three nested layers (first frame, back case, second frame) where each layer provides specific functions. The second frame surrounds and protects the inner components while the engagement structures simplify the overall assembly process, allowing multiple layers to be added without proportionally increasing complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The second frame serves multiple functions simultaneously: it provides structural protection for inner components, offers aesthetic decoration by hiding fixation structures, and maintains assembly simplicity through standardized engagement structures. This multi-functionality resolves the contradiction between added complexity and improved performance.

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

3Ease of operation

If engagement protrusions and recesses are used for assembly, then ease of assembly is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improveease of assemblyVSAvoidengagement structure precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The engagement structures are designed as separate, modular features on each frame component rather than integrated complex mechanisms. This segmentation allows for standardized manufacturing of engagement protrusions and recesses, reducing precision requirements while maintaining ease of assembly through simple matching geometries.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3879514B1Frame body and electronic picture frame
Publication Date: 2025.08.20 BOE TECHNOLOGY GROUP CO LTD
  • EP3879514B1 patent drawingFigure 1~2
  • EP3879514B1 patent drawingFigure 3~4
  • EP3879514B1 patent drawingFigure 5~6

AI summary

Embodiments of the present disclosure provide a frame and an electronic frame. The frame includes a first frame, a back case and a second frame. The first frame includes a first frame plate and a first frame wall, the back case includes a back case plate and a back case wall, the second frame includes a second frame plate and a second frame wall, and the second frame is configured to surround the first frame and the back case. The first frame plate is disposed opposite to the back case plate, and the second frame plate is located on a side of the first frame plate facing away from the back case plate, and the first frame wall is protruded from a surface of the first frame plate facing towards the back case plate, the back case wall is protruded from a surface of the back case plate facing towards the first frame plate, and the second frame wall is protruded from a surface of the second frame plate facing towards the first frame plate.