Modular Sensor Housing Twist-Lock Coupling for Luminaire Upgrades
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Solution Overview
Problem
Existing luminaires lack modularity, making it difficult for end users to upgrade, replace, or install different sensors without disassembling the luminaire, limiting flexibility and adaptability to technological changes.
Innovation Solution
A modular sensor system featuring a receptacle with snap fit assemblies and a locking tab that allows the sensor housing to be easily removably coupled and decoupled from the luminaire, enabling field installation and replacement without tools, and supporting various sensor devices across different luminaires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sensors are integrated into the luminaire, then the luminaire structure is simplified and manufacturing is easier, but the sensors cannot be easily removed or replaced in the field
Solution Approach 1:
The sensor system is divided into separate modular components: a sensor housing containing the sensor device, a receptacle interface in the luminaire, and a coupling mechanism with snap fit features and locking tabs. This segmentation allows the sensor to be independently removed and replaced without affecting the luminaire structure, resolving the contradiction between simplified manufacturing and easy field replacement.
Solution Approach 2:
The coupling mechanism incorporates dynamic elements including flexible cantilever snap fit assemblies that can deflect during engagement and disengagement, and locking tabs that can be actuated to secure or release the sensor. This dynamic design enables easy sensor replacement while maintaining a simple integrated appearance during normal operation.
2Reliability
If sensors are factory installed in luminaires, then quality control is improved, but end users cannot upgrade to newer sensor technologies
Solution Approach 1:
By separating the sensor device from the luminaire through a modular interface, the system maintains reliable factory installation quality while enabling users to replace sensors with different technologies or generations. The standardized receptacle and coupling mechanism ensure consistent installation quality regardless of who performs the installation.
Solution Approach 2:
The receptacle design with standardized snap fit features and locking tab configurations creates a universal interface that can accommodate different sensor types and generations. This universality allows the luminaire to adapt to various sensor technologies while maintaining consistent installation quality and reliability.
3Device complexity
If sensors are integrated into the luminaire housing, then the overall device complexity is reduced, but the sensors cannot be easily accessed for maintenance or replacement
Solution Approach 1:
The sensor system is segmented into an accessible sensor housing that can be independently removed from the luminaire through a simplified coupling interface. This segmentation maintains low overall system complexity while dramatically improving sensor accessibility for maintenance and replacement operations.
Solution Approach 2:
The sensor device is extracted from the luminaire housing as a separate removable module. The coupling mechanism with snap fit features and locking tabs provides a simple extraction interface that reduces device complexity while enabling easy sensor removal and replacement without disassembling the luminaire structure.
4Ease of operation
If a modular sensor system with coupling mechanisms is implemented, then sensor replacement ease is improved, but the device complexity increases
Solution Approach 1:
The coupling mechanism uses dynamic flexible cantilever snap fit assemblies that automatically engage and lock when the sensor is inserted, and can be easily actuated for release. This dynamic design simplifies the user interaction despite the presence of multiple coupling features, balancing ease of operation with acceptable device complexity.
Solution Approach 2:
The snap fit assemblies are designed to self-engage and self-lock when the sensor housing is inserted into the receptacle, eliminating the need for complex manual assembly procedures. The locking tabs and snap fit features automatically secure the sensor without requiring additional fastening steps, reducing operational complexity while maintaining ease of replacement.
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 easy upgrade and replacement of sensors by end users, enhancing flexibility and adaptability to technological changes without requiring disassembly of the luminaire, ensuring compatibility with multiple luminaire types and reducing maintenance complexity.
Implementation Method 1
The sensor housing includes a second side wall that comprises a pair of curved cantilever snap fit assemblies formed therein
Data Source
AI summary
A modular sensor system includes a receptacle that is configured to be coupled to a luminaire. Further, the modular sensor system includes a sensor housing that is configured house a sensor device therein. The sensor housing includes flexible snap fit features that are configured to removably couple the sensor housing to the receptacle by a twist and lock mechanism. Each flexible snap fit feature includes a curved cantilever snap fit defined by a portion of the sidewall of the sensor housing and a hook that extends radially outward from the curved cantilever snap fit. The hooks are configured to engage corresponding slots in the receptacle to couple the sensor housing to the receptacle by rotating the sensor housing within the receptacle in a first direction. The hooks are also configured to decouple the sensor housing from the receptacle by further rotating the sensor housing in the first direction.