Tool-Free EMI Shielding Housing With Manual Grip Fasteners

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Solution Overview

Problem

Conventional EMI shielding devices require tools for disassembly, are time-consuming, and need additional space for lateral sliding, making them inconvenient and limited in use.

Innovation Solution

An EMI shielding device with a first and second housing portion, female and male fasteners, and grip members that allow for quick engagement and disengagement along the assembly direction without additional tools or space, enabling efficient assembly and disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If screw fastening method is used to connect housing to electronic device, then connection stability is improved, but disassembly time and tool requirement increase

Engineering Contradiction:

Improveconnection stabilityVSAvoiddisassembly time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The housing is divided into first and second housing portions that can be separated. The fastening mechanism is segmented into male and female fasteners that can be independently engaged and disengaged, allowing the housing to be assembled and disassembled without requiring tool removal steps.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The female fastener includes an engaging groove with an opening that allows the male fastener to be inserted and engaged manually without requiring additional tools. The grip member enables the user to directly manipulate and engage/disengage the fasteners through manual force applied along the assembly direction.

Inventive Principle:

Principle #25Self-service

2Loss of time

If lateral sliding cover design is used to enable easy disassembly, then disassembly time is reduced, but device space requirement increases

Engineering Contradiction:

Improvedisassembly timeVSAvoiddevice space

Core Design Contradiction:

Loss of timeVSVolume of moving object

Solution Approach 1:

The fastening system transitions from a static screw connection to a dynamic engagement system where the male and female fasteners can be easily engaged and disengaged by applying force along the assembly direction. The grip member provides a dynamic interface for manual operation without requiring lateral sliding space.

Inventive Principle:

Principle #15Dynamics

3Strength

If traditional fastening system is used, then connection strength is maintained, but ease of repair is reduced

Engineering Contradiction:

Improveconnection strengthVSAvoidease of repair

Core Design Contradiction:

StrengthVSEase of repair

Solution Approach 1:

The female fastener is pre-formed with an engaging groove and opening that is specifically designed to receive and engage with the male fastener. This preliminary preparation of the fastening interface allows for quick assembly and disassembly during repair operations without requiring additional steps or tools.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8837169B2EMI shielding device which can be easily assembled and disassembled

Publication Date: 2014.09.16 WISTRON CORP

AI summary

An electromagnetic interference (EMI) shielding device includes first and second housing portions assembled along an assembly direction, at least two spaced-apart female fasteners fixed to one of the first and second housing portions, a plurality of male fasteners corresponding in number to the female fasteners and spacedly fixed to the other one of the first and second housing portions, and at least one grip member connected to one of the first and second housing portions. The grip member is applied with a force along the assembly direction or along a direction opposite to the assembly direction to engage or disengage the male and female fasteners.