Redundant Retention Mechanism for Secure Removable Device Attachment
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Solution Overview
Problem
Existing wearable technology devices lack secure and reliable retention mechanisms that prevent accidental detachment, especially in applications where GPS signals are blocked, requiring alternative location tracking methods like WLAN, and ensuring secure attachment and detachment of tracking devices.
Innovation Solution
Implementing redundant retention mechanisms with primary and secondary fastening systems that engage and disengage based on force thresholds, maintaining device positioning until sufficient force is applied to fully release, allowing the primary mechanism to reengage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single retention mechanism is used, then the device structure is simple, but the device may detach accidentally under insufficient retention force
Solution Approach 1:
The retention mechanism is divided into two independent segments: a primary retention mechanism and a secondary retention mechanism. Each mechanism operates independently with its own engagement and disengagement characteristics, allowing the system to provide redundant retention without requiring a completely new integrated design
Solution Approach 2:
The secondary retention mechanism acts as a backup that engages beforehand to prevent complete detachment if the primary mechanism fails. The spring-loaded design provides continuous pressure to maintain engagement, cushioning against accidental detachment forces
2Reliability
If a redundant retention mechanism is added, then accidental detachment is prevented, but the device complexity increases
Solution Approach 1:
Both the primary and secondary retention mechanisms are merged into a single integrated assembly that attaches to the mounting surface together. The mechanisms share common mounting structures and work in coordination, reducing the overall complexity compared to having separate attachment systems
Solution Approach 2:
The secondary retention mechanism uses a spring-loaded design that automatically engages and disengages based on applied force thresholds. The mechanism self-regulates its engagement state without requiring external control systems, reducing complexity while maintaining reliable backup retention
3Ease of operation
If the primary retention mechanism is disengaged, then device detachment occurs, but this may be accidental rather than intentional
Solution Approach 1:
The retention system transitions from a static single-state design to a dynamic multi-state design. The primary mechanism can be disengaged independently while the secondary mechanism remains engaged, creating intermediate states that allow controlled detachment scenarios while preventing accidental complete detachment
Solution Approach 2:
The secondary retention mechanism provides preliminary anti-action by maintaining engagement even when the primary mechanism is disengaged. This counteracts the detachment force before complete separation can occur, preventing accidental detachment while allowing intentional release when sufficient force is applied to both mechanisms
Data Source
AI summary
An apparatus for redundant retention of a device comprises a mountable device comprising a first side having a first fastening portion and a second fastening portion, at the first fastening portion, an elongated body having an inclined face parallel to and protruding from the first side and a flat face perpendicular to the first side, at the second fastening portion, a circular body with a smooth circular face, the circular body protruding from the first side, a removable device comprising a corresponding first side having a corresponding first fastening portion and a corresponding second fastening portion, at the corresponding first fastening portion, a first groove for receiving the elongated body and engaging a first retention mechanism, at the corresponding second fastening portion, a second groove for receiving the circular body and engaging a second retention mechanism.