Replaceable Gas Detector Module Snap-Fit Sealing
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Solution Overview
Problem
Existing consumable sensor modules for gas detectors are cumbersome to install and replace due to the use of mechanical fasteners and additional sealing components, increasing time and cost associated with maintenance and assembly.
Innovation Solution
A replaceable module for gas detectors featuring a sensor housing and cover that are snap-fit into the enclosure, using resilient engaging members and protrusions for secure attachment without mechanical fasteners, and an integral sealing member to prevent foreign particle ingress, reducing the number of components and assembly steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical fasteners and tools are used to install the consumable sensor module, then the module is securely retained in the enclosure, but the installation process becomes cumbersome and time-consuming
Solution Approach 1:
The patent replaces mechanical fasteners (screws, clips requiring tools) with a snap-fit mechanism using resilient engaging members that utilize elastic deformation and mechanical interlocking. The resilient members deflect during insertion and lock into engagement features on the enclosure, providing secure retention without requiring tools or complex fastening operations.
2Object-affected harmful factors
If multiple sealing provisions are used to prevent foreign particle entry, then sealing effectiveness is improved, but the number of components and assembly inspection steps increase
Solution Approach 1:
The patent combines multiple sealing functions into a single integrated sealing member that forms part of the sensor module assembly. This single component provides the necessary sealing interface with the enclosure, eliminating the need for separate gaskets, O-rings, or multiple sealing provisions while maintaining protection against foreign particles.
3Reliability
If multiple sealing provisions and mechanical fasteners are used, then the module is securely retained and sealed, but the number of components and assembly steps increase
Solution Approach 1:
The patent integrates the sealing function directly into the sensor module housing and cover assembly, eliminating separate sealing components. The resilient engaging members simultaneously provide both mechanical retention and sealing functions, reducing the total component count while maintaining reliability.
Solution Approach 2:
The resilient engaging members serve multiple functions: they provide mechanical retention through engagement with the enclosure, enable tool-free installation through their resilient deflection capability, and contribute to sealing by maintaining contact pressure against the sealing interface. This multi-functionality reduces the need for separate components.
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 solution simplifies the installation and replacement of the sensor module, reducing time and effort, lowering costs, and enhancing serviceability by eliminating the need for mechanical tools and separate sealing components.
Implementation Method 1
The cover may include at least one resilient engaging member extending from the cover
Implementation Method 2
the cover defines at least one protrusion adapted to engage with a lower enclosure of the gas detector to restrict a movement of the cover relative to the lower enclosure
Data Source
AI summary
Embodiments of the disclosure describe a replaceable module for a gas detector. The replaceable module may include a sensor housing and a cover. The sensor housing is adapted to accommodate a sensor and a first sensor circuit of the gas detector. The sensor is detachably connected to the first sensor circuit. The cover is detachably connected to the sensor housing. The cover may include at least one resilient engaging member extending from the cover and defines at least one protrusion adapted to engage with a lower enclosure of the gas detector to restrict a movement of the cover relative to the lower enclosure.