Circuit Breaker Pole Assembly Post-Molding Integration
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Solution Overview
Problem
Conventional sealed type vacuum circuit breakers face contamination and deformation risks due to high injection pressure during molding, leading to increased manufacturing costs and waste, as the main circuit breaker component is often damaged or recycled unnecessarily.
Innovation Solution
A pole component assembly for circuit breakers featuring an external insulating housing molded without the main circuit breaker component, allowing for assembly post-molding, with an elastomer coating on the outer surface to protect against pressure and facilitate separation without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the main circuit breaker component is included during molding, then the manufacturing process is more integrated, but the component is damaged by high injection pressure
Solution Approach 1:
The manufacturing process is divided into two separate stages: first molding the external insulating housing without the main circuit breaker component, then assembling the component into the molded housing. This segmentation allows the housing to withstand high injection pressure during molding while protecting the main circuit breaker component from damage.
Solution Approach 2:
The external insulating housing is molded in advance before the main circuit breaker component is installed. This preliminary action allows the housing to be fully formed and cured before the delicate component is introduced, eliminating exposure to harmful injection pressure.
2Strength
If a component protecting portion is added, then the main circuit breaker component is protected from injection pressure, but manufacturing cost increases
Solution Approach 1:
The main circuit breaker component is extracted from the molding process entirely, removing it from the mold cavity during injection. This eliminates the need for component protecting portions while still achieving protection through the two-stage process of molding the housing first, then assembling the component separately.
3Strength
If the pole component is extruded integrally with the external insulator, then structural strength is improved, but recyclability decreases when molding is poor or replacement is needed
Solution Approach 1:
The pole component is segmented into two separate parts: the external insulating housing and the main circuit breaker component. The housing is molded separately and then assembled with the component through insertion and sealing. This segmentation maintains structural strength through the sealed assembly while enabling easy disassembly and recycling of the expensive main circuit breaker component when needed.
4Manufacturing precision
If high injection pressure is applied during molding, then the external insulator is properly formed, but the main circuit breaker component is damaged
Solution Approach 1:
The main circuit breaker component is completely removed from the mold cavity before injection molding occurs. High injection pressure is applied to form the external insulating housing without the component present, eliminating any risk of damage. After molding, the component is separately assembled into the finished housing.
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 approach prevents contamination and deformation of the main circuit breaker component, reduces manufacturing costs by eliminating separate pressure protection components, and allows for economical recycling and maintenance by enabling assembly without pressure limitations and separate component disposal.
Implementation Method 1
an outer circumferential surface of the main body being coated with an elastomer, and an upper end thereof being most thickly coated
Data Source
AI summary
Disclosed herein is a pole component assembly for a circuit breaker. The pole component assembly for a circuit breaker includes an external insulating housing made by injecting resin into a housing mold, applying injection pressure to mold the injected resin, and separating the molded resin from the housing mold, and a circuit breaker portion assembly detachably inserted into the external insulating housing after the external insulating housing is made. According to embodiments of the present disclosure, the external insulating housing is molded without a main circuit breaker component when manufacturing a sealed type pole component, and the main circuit breaker component is assembled into the finished external insulating housing, thereby preventing the main circuit breaker component from being contaminated or damaged.