Locking Element Visibility Shift for Reliable CPA State Detection
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Solution Overview
Problem
Existing Connector Position Assurance (CPA) systems fail to reliably indicate a locked state, particularly in plug connections, due to the need for a scannable element that can only be readable when the CPA is closed, and are prone to unintentional detachment from mechanical influences.
Innovation Solution
A security device with a display element featuring an identification feature that changes visibility from a first field of view to a second field of view upon locking, allowing reliable detection of the lock state using a detection element positioned in the second field of view, ensuring the information is only readable when the locking element is in the locked position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a scannable element is positioned to be readable only when CPA is closed, then reliable detection of locked state is improved, but the element may be obscured or inaccessible in certain positions
Solution Approach 1:
The patent transitions the scannable element from a two-dimensional surface code to a three-dimensional raised relief pattern. This elevation allows the code to be scanned from multiple angles and positions, solving the problem of obscuration while maintaining reliable detection. The raised feature creates a new spatial dimension for reading accessibility.
Solution Approach 2:
The patent changes the physical parameters of the scannable element by raising it from a flat surface to a three-dimensional relief pattern. This parameter change in elevation and geometry enables the code to be detected from various angles and positions, resolving the contradiction between reliable locked-state detection and element accessibility.
2Productivity
If automation in production and assembly is increased, then productivity is improved, but the requirement for scannable control functions increases complexity
Solution Approach 1:
The locking mechanism automatically performs the function of displaying its state through the raised scannable code. When the locking element moves to the locked position, the code automatically becomes accessible in the second field of view without requiring additional actuators or complex control systems. This self-service approach enables automation while minimizing added complexity.
3Ease of operation
If the identification feature is always visible, then ease of operation is improved, but the ability to distinguish locked state is worsened
Solution Approach 1:
The patent creates an asymmetric spatial relationship between the scannable code and the reader. The code is positioned and oriented such that it is only readable from the second field of view when the locking element is in the locked position. This asymmetric arrangement provides both continuous visibility for ease of operation and state-specific readability for precise detection.
Data Source
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AI summary
The disclosure relates to a locking device (100) for securing a locking of a locking element (110), wherein the locking device (100) comprises: a locking element (110) that is movable from a first locking position (111) to a second locking position (112), wherein the locking element (110) effects a locking in the second locking position (112); a display element (120) with a recognition feature (200) for displaying information; wherein in the first locking position (111) of the locking element (110) the recognition feature (200) is visible within a first field of view (212); and wherein in the second locking position (112) of the locking element (110) the recognition feature (200) is visible within a second field of view (214).