Switchgear Terminal Recess Design for Compact Electrical Connections
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Solution Overview
Problem
Conventional electrical switchgear is not compact enough due to the need for larger cavities to accommodate terminal contacts, which limits space efficiency and accessibility for maintenance.
Innovation Solution
A terminal design where the contact is located in a recess on the inner surface of the housing, allowing the cavity diameter to be reduced, resulting in a more compact switchgear arrangement by minimizing the terminal's diameter over much of its circumference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal contacts are located on the inner surface of the housing, then electrical connection is established, but the cavity diameter must be increased to accommodate the contacts
Solution Approach 1:
The terminal contact is merged with the recess structure, where the contact is positioned within the recess and its outer surface is flush with the inner surface of the housing. This integration eliminates the need for additional space to accommodate protruding contacts, as the contact structure and housing form a unified compact assembly.
Solution Approach 2:
The terminal contact is nested within the recess formed in the inner surface of the housing. The recess acts as a containing structure that houses the contact, allowing the contact to be positioned inside the housing volume rather than requiring external space. This nesting arrangement minimizes the overall cavity diameter while maintaining electrical connection functionality.
2Reliability
If larger cavity diameter is used to accommodate terminal contacts, then electrical connection is maintained, but the switchgear becomes less compact and harder to maintain
Solution Approach 1:
By merging the terminal contact with the recess structure and ensuring the contact surface is flush with the housing inner surface, the design creates a compact terminal assembly. This reduces the overall switchgear size while maintaining electrical connection reliability, thereby improving maintenance accessibility in smaller spaces.
3Reliability
If the terminal contact protrudes from the inner surface, then electrical connection is established, but the terminal diameter must be increased
Solution Approach 1:
The terminal contact is merged with the recess structure, where the contact is positioned within the recess and its outer surface is flush with the inner surface of the housing. This integration eliminates the need for additional terminal diameter to accommodate protruding contacts, as the contact structure and housing form a unified compact assembly.
Solution Approach 2:
The terminal contact is nested within the recess formed in the inner surface of the housing. This nesting arrangement allows the contact to be positioned inside the housing rather than protruding outward, minimizing the terminal's external dimensions while maintaining electrical connection functionality.
Data Source
AI summary
A terminal is provided for an electrical switchgear. The terminal includes: a housing arrangement including an electrically insulating material and having an inner surface defining a cavity; and a first terminal electrical contact contained in the housing arrangement for making an electrical connection with an electrical component insertable into the cavity. The first terminal electrical contact is located in a first recess formed in the inner surface, the first terminal electrical contact being flush with the inner surface.