Housing Lock Mechanism for Analysis Device Assembly
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Solution Overview
Problem
Existing analysis devices for medically significant components in bodily fluids, such as blood glucose meters, face challenges in assembly and maintenance due to non-reusable housing parts and increased costs associated with screw connections or snap connections that are designed to be irreversible, making it difficult to perform functionality checks and repairs without damaging the device.
Innovation Solution
The implementation of a lock element that secures the housing parts together only after a functionality check, allowing for the device to be opened and repaired without damage before being locked, using catch hooks that break upon unauthorized opening, ensuring that any tampering is apparent and maintaining the device's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw connections or snap connections are used to secure housing parts, then the housing is locked and secure, but the housing parts become non-reusable and damage occurs during opening for repairs
Solution Approach 1:
The housing connection system is segmented into two distinct phases: a reusable phase using a releaseable connection mechanism during assembly and testing, and a non-reusable phase using breakable catch hooks for final security. This segmentation allows the housing to be opened for repairs without damage during the reusable phase, while maintaining security through the breakable catch hooks that prevent unauthorized opening after final assembly.
Solution Approach 2:
The releaseable connection mechanism is used preliminarily during assembly and functionality testing to allow easy disassembly and repair. Only after successful testing is the final locking step performed by breaking the catch hooks, which then prevent further opening. This preliminary use of a gentle connection method avoids damage while maintaining the ability to repair if needed.
2Ease of repair
If the housing is designed to be opened for functionality checks and repairs, then ease of repair is improved, but device security and protection against unauthorized opening deteriorates
Solution Approach 1:
The housing connection transitions from a dynamic, reversible state during assembly and testing to a static, irreversible state after final locking. The releaseable connection mechanism allows dynamic opening and closing during the testing phase, while the broken catch hooks create a static condition that clearly indicates any subsequent opening attempt, thus providing both accessibility and security at different stages.
Solution Approach 2:
The invention uses visual indication through the catch hook mechanism - the presence of intact catch hooks indicates the device is secure and has not been opened, while broken catch hooks provide clear visual evidence of opening. This visual change serves as a security indicator without requiring complex electronic or mechanical security systems.
3Reliability
If irreversible connections are used to prevent unauthorized opening, then device security is improved, but the ability to perform functionality checks and repairs without damage deteriorates
Solution Approach 1:
The manufacturing process uses the releaseable connection mechanism preliminarily to allow functionality testing and repairs before final assembly. Only after successful testing is the irreversible locking step performed by breaking the catch hooks. This preliminary testing phase ensures device security is achieved without compromising the ability to perform necessary checks and repairs.
Data Source
AI summary
An analysis device is provided comprising a housing having at least two housing parts, a measuring unit and a processor provided therein for purposes of the functionality of the analysis device and generation of analysis data, wherein the device comprises a lock element for producing a generally fixed mechanical connection between the at least two housing parts. Providing such a lock element allows the analysis device to be checked for quality control and/or functionality purposes before the lock element is fitted to the housing, and if the device requires service or repair as a result of such checks then the housing can be reopened without damage to the housing or other aspects of the device. Once the lock element is fitted into a locked position for locking the housing together, subsequent reopening of the housing causes structural effects, including damage or destruction, to either or both of the lock element and the housing or housing parts, ensuring that such reopening becomes apparent to the user.