Vacuum Contactor Terminal Assembly with Adjustable Bush
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Solution Overview
Problem
Conventional vacuum contactor switches require separate terminal assemblies for cradles with different terminal hole diameters, leading to management difficulties and increased manufacturing costs due to the need for multiple diameter-specific assemblies.
Innovation Solution
A terminal assembly for vacuum contactor switches featuring a body portion with adjustable clearance via a detachable bush, allowing a single assembly to fit cradles with terminal holes of varying sizes by adjusting the bush's position around the body portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate terminal assemblies are manufactured for different terminal hole diameters, then the fit precision for specific cradle types is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The terminal assembly is designed with a universal body portion that can be used across different cradle types. The bush component provides adaptability to accommodate various terminal hole diameters (29mm and 35mm), allowing a single terminal assembly design to serve multiple functions and fit different cradle specifications without requiring separate assemblies for each size.
Solution Approach 2:
The terminal assembly is divided into distinct components: a body portion and a bush. The bush acts as a separate segment that can be selectively positioned or configured to match different terminal hole diameters. This segmentation allows the main body portion to remain standardized while only the bush component varies to accommodate different sizes, reducing overall device complexity.
2Adaptability or versatility
If multiple diameter-specific terminal assemblies are manufactured, then the adaptability to different cradle sizes is improved, but the manufacturing cost increases
Solution Approach 1:
A single terminal assembly design with a universal body portion and adjustable bush configuration can accommodate both 29mm and 35mm terminal holes, eliminating the need to manufacture separate assemblies for each size. This reduces manufacturing costs by consolidating production into one standardized design while maintaining full adaptability to different cradle types.
Solution Approach 2:
The bush component's positioning or configuration can be adjusted to change the effective diameter accommodation parameter. By modifying the bush's position or orientation rather than changing the entire terminal assembly, the system adapts to different terminal hole sizes using the same base component, thereby reducing manufacturing complexity and cost.
3Reliability
If separate terminal assemblies are used for different cradle types, then the reliability of connection is improved, but the ease of operation and management deteriorates
Solution Approach 1:
The standardized body portion combined with adaptable bush components creates a universal terminal assembly that maintains reliable connections across different cradle types. Engineers and technicians only need to manage one type of terminal assembly design rather than multiple diameter-specific versions, significantly improving ease of operation and component management while preserving connection reliability through proper bush configuration.
Data Source
AI summary
The present disclosure relates a terminal assembly for a vacuum contactor switch which is connected to a terminal of a cradle with electricity applicability to protect a power system by breaking circuits in the event of a dangerous situation such as a short circuit or an overcurrent. The terminal assembly includes a body portion, a connecting member, a contactor and a bush. The body portion is inserted into a terminal hole formed in the terminal of the cradle and provided with first fastening holes formed in opposite side surface thereof. The contactor is connected to one end of the body portion through a connecting member. The bush has a pair of pieces disposed to surround a periphery of the body portion with both ends of one of the pieces facing both ends of the other piece.