Blood Glucose Meter Battery Cover Locking Against Accidental Removal
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Solution Overview
Problem
Conventional blood glucose meters pose a risk of accidental battery cover removal, which can lead to serious accidents, especially when forced opening leads to swallowing by children, and there is a lack of effective prevention against liquid ingress into the battery compartment.
Innovation Solution
A blood glucose meter with a locking mechanism that requires a jig to open the battery cover and includes capillary flow paths to guide liquids away from the battery compartment, featuring a hinge with a lock pin that resists damage and ensures secure battery cover attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to prevent battery cover removal, then safety against accidental swallowing is improved, but device complexity increases
Solution Approach 1:
A lock pin acts as an intermediary element between the battery cover and main body, providing the locking function. The lock pin engages with a groove in the battery cover and a corresponding structure in the main body, creating a simple mechanical interlock that prevents accidental removal while maintaining device simplicity
Solution Approach 2:
The locking function is extracted as a separate, simple component (lock pin) rather than being integrated into the battery cover or main body structure. This allows the locking mechanism to be implemented with minimal additional complexity while effectively addressing the safety concern
2Reliability
If the battery cover is made secure with a locking mechanism, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The lock pin serves as a simple mechanical intermediary that provides secure locking while allowing easy operation. When the battery cover is attached, the lock pin automatically engages with the groove and locking structure, securing the cover without requiring additional user actions. The simple pin-groove design enables reliable locking that does not complicate the attachment and removal process
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
The locking mechanism prevents accidental battery cover removal by children and effectively guides liquids away from the battery compartment, enhancing safety and durability.
Implementation Method 1
a capillary flow path that is provided so as to surround at least part of the opening in the battery cover, and that guides liquid that has entered through the opening by capillary action to the outside of the main body part
Implementation Method 2
The elastic deformation part is provided at a position opposite the battery cover in the main body part and deforms when pressed by the jig inserted through the opening
Data Source
AI summary
A blood glucose meter (10) comprises a main body part (11), a sensor mounting part (13), a measurement unit (14), a battery compartment (11a), a battery cover (12), a hinge (21), a lock pin (21a), and sliding surfaces (SL1, SL2). The battery cover (12) has an opening (12a) into which a jig Z is inserted during removal from the body portion (11). The hinge (21) deforms when pressed by the jig (Z) inserted through the opening (12a). The lock pin (21a) is provided at a position where it is exposed to the outside through the opening (12a), and when pressed by the jig (Z), the battery cover (12) is unlatched from the main body portion (11). When the battery cover (12) is slid along the sliding surfaces (SL1 and SL2) in a state in which the battery cover (12) is latched to the main body portion (11) by the lock pin (21a), a force in a compression direction is exerted on the hinge (21).