Level Removable End Cap Detent Actuator Mechanism
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Solution Overview
Problem
Conventional level end cap removal systems are often counter-intuitive, difficult to use, and require more than one hand, leading to frustration and abandonment of the removable feature.
Innovation Solution
A level end cap system with a sliding fit and discrete actuators connected by living hinges, allowing for easy and secure attachment and removal with one hand, using detents and a connector interface for secure engagement and audible feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the end cap is securely attached to the level body, then the level is protected against drops, but the end cap becomes difficult to remove
Solution Approach 1:
The end cap assembly is divided into separate components: the end cap body, the interface with detent apertures, and the level body. This segmentation allows the end cap to be securely attached through detent engagement while enabling easy removal by simply pulling the end cap away from the interface, resolving the contradiction between security and ease of removal.
Solution Approach 2:
The interface acts as an intermediary component between the end cap and the level body. It contains detent apertures that engage with the end cap's detents to provide secure attachment, while also allowing smooth removal when the end cap is pulled away. This intermediary structure enables both secure attachment and easy removal without requiring complex mechanisms.
2Ease of operation
If a multi-piece end cap subassembly is used, then the end cap can be removed, but it requires more than one hand and adds complexity
Solution Approach 1:
The end cap body and the interface with detent apertures are merged into a single integrated component. This merging allows the end cap to be removed with one hand by simply pulling it away from the interface, eliminating the need for multi-piece subassemblies that require multiple hands and complex removal procedures.
Solution Approach 2:
The detent engagement mechanism is extracted from the end cap body and placed in the interface as a separate feature. This allows the end cap to be a simple, easy-to-remove component while the interface provides the secure engagement functionality, reducing overall device complexity compared to multi-piece subassemblies.
3Reliability
If the end cap is attached with a press-fit or direct engagement, then it is secure, but it requires two hands to remove
Solution Approach 1:
The attachment mechanism transitions from a static press-fit or direct engagement to a dynamic detent-based system. The detents engage with the detent apertures to provide secure attachment, but can be easily disengaged by pulling the end cap away, allowing one-handed removal while maintaining reliability during use.
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
Enables effortless and secure one-handed removal and reattachment of the end cap, reducing operational complexity and improving user experience.
Implementation Method 1
squeezing with the fingers of one hand two discrete opposing actuators formed in the end cap against the bias of respective living hinges to release detents from corresponding detent apertures
Implementation Method 2
the position of the bubble in the vial indicates whether or not the level is horizontal and/or vertical with respect to gravity
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
A level comprises a level body supporting a level vial, and an end cap releasably connected to the level body. The end cap includes an actuator, and a detent which releasably retains the end cap on the level body. The level body has an interior volume, and the actuator is disposed outside the level volume.