Electric Component Housing With Sprayed Particle Sealing
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Solution Overview
Problem
Hermetic encapsulation of electric components is challenging due to pressure differences and leakage issues caused by viscous soldering or adhesive materials during the joining process, which can lead to cover lifting or channel formation.
Innovation Solution
A housing design with a coating of sprayed-on particles applied to the joining region, providing a mechanical connection and air-tight sealing, using methods like thermal spraying or aerosol jet deposition, which minimizes temperature-induced pressure differences and ensures a stable, hermetically sealed housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If viscous soldering or adhesive materials are used to connect housing parts, then mechanical connection and sealing are achieved, but pressure differences cause cover lifting, slipping, or channel formation leading to leakage
Solution Approach 1:
The patent changes the physical state of the connecting material from viscous (solder/adhesive) to solid (sprayed particles). The sprayed particles form a solid coating that maintains hermetic sealing while eliminating the viscosity-related pressure difference problems that cause cover lifting and channel formation during the joining process.
Solution Approach 2:
The patent replaces the mechanical/chemical joining process (soldering or adhesive bonding) with a physical deposition process (spraying particles). This substitution eliminates the viscous state entirely and creates a solid coating that provides both mechanical connection and hermetic sealing without the harmful pressure difference effects.
2Reliability
If weights or clamps are used to secure covers during joining, then pressure differences are countered, but device complexity increases significantly
Solution Approach 1:
The patent extracts and eliminates the need for separate securing components (weights or clamps) by integrating the sealing function directly into the joining region coating. The sprayed particle coating provides both the mechanical connection and the pressure equalization functions that previously required separate components.
Solution Approach 2:
The coating of sprayed particles serves multiple functions simultaneously: it provides mechanical connection between housing parts, ensures hermetic sealing, and equalizes pressure differences. This multi-functionality replaces what previously required separate components (weights, clamps, and sealing elements).
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 effectively suppresses gas exchange and maintains a precise fit between housing parts, reducing the risk of leakage and enhancing the reliability of electric component enclosures.
Implementation Method 1
The coating is applied by deposition of a directed stream of particles. The particles are directed here onto the surface to be coated, i.e., the joining region. Owing to the kinetic and thermal energy of the particles, good adhesion and a dense layer can be ensured.
Implementation Method 2
The coating is produced by thermal coating, in particular by a thermal spraying method. In this case, for example, particles are directed onto the joining region in a stream of carrier gas. Use can be made, for example, of electric arc spraying, flame spraying, in particular high speed flame spraying, plasma spraying, laser spraying and cold gas spraying.
Implementation Method 3
The coating is applied by deposition of a directed stream of particles. The particles are directed here onto the surface to be coated, i.e., the joining region. Owing to the kinetic and thermal energy of the particles, good adhesion and a dense layer can be ensured.
Data Source
AI summary
A housing for an electric component and a method for producing a housing for an electric component are disclosed. In an embodiment the housing includes a first housing part and a second housing part, wherein the first housing part is connected to the second housing part in a joining region, and wherein the joining region is at least partially covered by a coating containing sprayed-on particles.