Terminal Block Joint Structure for Compact Tool-Free Connections
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Solution Overview
Problem
Conventional terminal blocks require space for bolting tools, leading to increased size and inefficiency in terminal arrangements.
Innovation Solution
A terminal block design featuring a synthetic resin housing with columnar metal connection terminals and tubular metal joint portions that allow for tool-free electrical connections, enabling closer terminal spacing by using mathematically similar shapes and tapered guide sections for secure contact and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bolting tools are used to connect terminals, then reliable electrical connection is achieved, but the terminal block size increases due to required clearances
Solution Approach 1:
The invention extracts the bolting tool from the connection process by providing pre-formed through-holes in the terminal blocks that directly receive bolts. This eliminates the need for external bolting tools and their associated clearances, achieving reliable electrical connection without increasing terminal block size.
Solution Approach 2:
The through-holes serve as intermediaries that facilitate direct bolt insertion between terminal blocks. These pre-formed openings act as mediators that enable reliable mechanical and electrical connection without requiring additional space for tool manipulation.
2Ease of operation
If clearances are provided for bolting tools, then bolting work can be performed, but terminal arrangement efficiency decreases
Solution Approach 1:
The invention removes the requirement for external bolting tools by integrating through-holes directly into the terminal block structure. This extraction of the tooling requirement eliminates the need for clearance spaces, thereby improving terminal arrangement efficiency while maintaining ease of operation.
Solution Approach 2:
The terminal blocks are designed with self-service connection capability through pre-formed through-holes that enable direct bolt insertion without external tools. This self-contained design improves both operational ease and arrangement efficiency by eliminating tool clearance requirements.
3Reliability
If traditional bolting method is used, then electrical connection is achieved, but space is wasted due to required clearances
Solution Approach 1:
The invention extracts the clearance requirement from the connection system by providing integrated through-holes in the terminal blocks. This eliminates wasted space while maintaining reliable electrical connection, as the through-holes are formed within the existing terminal block structure without requiring additional clearance zones.
Data Source
AI summary
The present disclosure provides a terminal block that can be kept compact. A terminal block has a housing made of a synthetic resin, a columnar metal connection terminal held by the housing, and a cylindrical metal joint part in which a device connection part of the connection terminal is inserted. The joint part has a cylindrical part in which the device connection part is inserted and a cylindrical part in which an end part of a device-side terminal electrically connected to the connection terminal is inserted. The connection terminal is electrically connected to the device-side terminal via the joint part.