Optoelectronic Sensor Measuring Unit Potting Method
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Solution Overview
Problem
Existing optoelectronic sensor systems face challenges in securely fastening optical components and sealing against moisture and dirt ingress, which affects their reliability and durability.
Innovation Solution
A method for producing a measuring unit for an optoelectronic sensor system involves arranging a light emitting unit and/or a receiving unit with holding elements in a housing, introducing a potting compound to enclose the holding elements, and curing the compound to form a filler body that securely fastens and seals the optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical components are fastened using traditional mechanical fastening methods, then the components can be securely attached, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The patent replaces traditional mechanical fastening systems (screws, clips, adhesives) with a potting compound system. The optical components are embedded in a potting compound that is introduced into the housing, eliminating the need for separate mechanical fastening mechanisms. This substitution simplifies the manufacturing process while maintaining secure attachment of optical components.
Solution Approach 2:
The patent merges multiple functions into a single potting compound application step. The potting compound simultaneously provides mechanical support, electrical insulation, environmental sealing, and vibration damping that would otherwise require multiple separate components and assembly steps. This consolidation reduces manufacturing complexity and assembly time.
2Object-affected harmful factors
If the housing is sealed using complex sealing mechanisms, then protection against moisture and dirt ingress is improved, but the manufacturing cost and process complexity increase
Solution Approach 1:
The patent replaces complex mechanical sealing mechanisms (gaskets, seals, flanges) with a potting compound-based sealing system. The potting compound is introduced into the housing and cures to form a continuous sealing matrix that protects optical components from moisture and dirt ingress without requiring separate sealing components or complex assembly procedures.
Solution Approach 2:
The patent uses potting compound as a composite material that combines sealing, mechanical support, and environmental protection functions. The potting compound creates a homogeneous sealed environment that protects against harmful factors while simplifying the manufacturing process compared to traditional multi-component sealing systems.
3Reliability
If multiple separate fastening and sealing components are used, then the reliability of component attachment and sealing is improved, but the manufacturing time and cost increase
Solution Approach 1:
The patent combines multiple separate fastening and sealing components into a single integrated potting compound system. The potting compound is introduced in one step and simultaneously provides mechanical attachment, electrical insulation, and environmental sealing functions, eliminating the need for multiple separate assembly operations and improving manufacturing productivity.
Solution Approach 2:
The patent applies preliminary action by pre-positioning optical components in the housing before introducing the potting compound. The components are arranged in their final positions, and the potting compound is then introduced to simultaneously secure and seal them, eliminating the need for subsequent fastening and sealing operations.
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 provides a measuring unit with securely fastened optical components and a sealed housing, enhancing the system's reliability, durability, and resistance to moisture and dirt, while also simplifying and cost-reducing the manufacturing process.
Implementation Method 1
introducing the potting compound into the housing via the opening so that the holding element is at least partially enclosed by the potting compound, and curing the potting compound
Data Source
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AI summary
The invention relates to a method for producing a measuring unit (1) for an optoelectronic sensor system, the measuring unit (1) comprising a housing (7) in which a light emitting unit (5) with a light source and/or a receiving unit (2) with a photodetector (3), as well as a control circuit, are arranged; wherein the light emitting unit (5) and/or the receiving unit (2) comprises at least one holding element (59, 91a, 91b) for fastening and is arranged in a region of a first distal end (8a) of the housing (7), and wherein an opening (71) for introducing a casting compound is formed on the housing (7), said opening being spaced from the first distal end.The method comprises the steps of: - arranging the light transmitting unit (5) and/or the receiving unit (2) in the region of the first distal end (8a) within the housing (7), - introducing the potting compound (101) into the housing (7) via the opening (71) such that the holding element (59, 91a, 91b) is at least partially enclosed by the potting compound (101), and - curing the potting compound (101), wherein the light transmitting unit (5) and/or the receiving unit (2) are connected to it in a force-fitting and/or form-fitting manner. In a further aspect, the invention relates to a corresponding measuring unit (1) with a filler body (101a) formed from the potting compound (101).