Cover Locking Mechanism for Child-Resistant Battery Access

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Solution Overview

Problem

Existing electronic devices lack effective anti-disassembly mechanisms that prevent unauthorized access and protect children from easily removing components, particularly batteries, which can lead to device damage or safety hazards.

Innovation Solution

An anti-disassembly mechanism featuring a frame with a fastening mechanism, lock element, and elastic elements that require a tool and multiple steps to unlock, making it difficult to detach the cover and access internal components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If no anti-disassembly mechanism is provided, then the device is easy to disassemble and maintain, but electronic components can be stolen and children can easily remove batteries causing damage or danger

Engineering Contradiction:
Improvedevice securityVSAvoiddisassembly difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The lock element is pre-configured in a locked state that prevents cover removal. The elastic element is pre-compressed to maintain the lock element in the blocking position, requiring a specific unlocking action (pressing the button) to release the constraint before disassembly can proceed.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a simple cover attachment is used, then the device is easy to manufacture and disassemble, but it provides insufficient protection against unauthorized access and component removal

Engineering Contradiction:
Improveanti-disassembly protectionVSAvoidmechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The anti-disassembly mechanism is divided into separate functional components: a lock element for blocking, an elastic element for maintaining the locked state, and a button for unlocking. This segmentation allows each component to perform its specific function while keeping the overall structure relatively simple and manufacturable.

Inventive Principle:
Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Prevents unauthorized access and protects children from easily removing components, enhancing device security and safety by increasing the difficulty of disassembly.

Implementation Method 1

an elastic element disposed in the housing and abutting to the lock element, wherein the elastic element exerts an elastic force on the lock element so that the lock element is maintained in the blocking position

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS12484165B2Electronic device with anti-disassembly mechanism
Publication Date: 2025.11.25 NANNING FUGUI PRECISION IND CO LTD
  • US12484165B2 patent drawing
  • US12484165B2 patent drawing
  • US12484165B2 patent drawing

AI summary

An electronic device with anti-disassembly mechanism includes a housing, a cover, a frame, a fastening mechanism, a locking element, and a rotation button. The cover is detachably disposed on the housing. The frame is disposed in the housing. The fastening mechanism is disposed on the frame and used for fastening on the cover. The locking element is movably disposed on the frame and used to prevent the fastening mechanism from moving. The rotation button is movably disposed on the frame and used to drive the fastening mechanism. In a locked state, the locking element prohibits the fastening mechanism from moving, and the fastening mechanism is fastened to the cover. When the rotation button is pressed to an unlocked position, the rotation button pushes the locking element to disengage from the fastening mechanism.