Sealed Contactor Manufacturing with Integrated Elastomeric Seal
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Solution Overview
Problem
Existing methods for manufacturing sealed contactors of electromagnetic switching devices fail to effectively seal the space filled with arc extinguishing gas, leading to inefficient arc extinction and reduced component lifespan.
Innovation Solution
A method involving the formation of an air-tight space by coupling a housing, plate, and cylinder, with insulating gas injection under vacuum conditions, followed by tight attachment and laser welding to ensure a sealed environment without using additional sub-materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sealing methods are used for the arc extinguishing gas space, then the sealing process becomes complex with additional sub-materials, but the sealing reliability is insufficient leading to gas leakage
Solution Approach 1:
The invention merges the sealing function directly into the contactor housing structure by forming an integrated sealing groove and elastomeric sealing member that is molded as part of the housing. This eliminates the need for separate sealing components and sub-materials, achieving reliable sealing through structural integration rather than adding complex sealing mechanisms.
Solution Approach 2:
The invention employs an elastomeric sealing member that utilizes the flexible properties of elastomeric material to create an effective seal. The sealing groove is designed to receive and deform the elastomeric member, allowing it to conform to the mating surface and prevent gas leakage without requiring rigid or complex sealing structures.
2Duration of action of moving object
If the air-tight space is not properly sealed, then the manufacturing process is simpler, but the arc extinguishing gas leaks reducing component lifespan
Solution Approach 1:
The sealing structure is designed and integrated into the housing during the initial molding process, with the sealing groove and elastomeric sealing member formed as part of the housing structure before assembly. This preliminary integration ensures proper sealing is built-in from the start, preventing gas leakage that would reduce component lifespan, while the molding process itself remains a standard manufacturing technique.
3Reliability
If additional sub-materials are used for sealing, then the sealing effectiveness improves, but the production cost increases
Solution Approach 1:
The invention combines the sealing function with the existing housing material by integrating the elastomeric sealing member directly into the housing structure during molding. This eliminates the need for additional separate sealing materials and sub-materials, achieving effective sealing while reducing the total quantity of materials required and lowering production costs.
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
This method effectively seals the arc extinguishing gas within the electromagnetic switching device, enhancing the reliability and longevity of the components while reducing production costs.
Implementation Method 1
an insulating gas is injected into the chamber in a vacuum state at a certain pressure
Implementation Method 2
tightly attaching the cylinder to the plate by a tight-attachment inducing member mounted at a lower portion of the plate to form a sealing structure
Implementation Method 3
sealing the tightly attached plate and the cylinder
Data Source
AI summary
A method for manufacturing a sealed contact point is performed by injecting an arc extinguishing gas into an air-tight space of an electromagnetic switching device and sealing it. The method for manufacturing a sealed contactor, including: forming a driving body and coupling a housing and a plate; air-tightly fixing a detachable chamber and forming the interior of the chamber under an insulating gas atmosphere; tightly attaching the cylinder to the plate by a tight-attachment inducing member within the chamber under the insulating gas atmosphere to form a sealing structure; exhausting the chamber; disassembling the chamber from the plate; and sealing the tightly attached plate and the cylinder.