Coaxial Cable External Conductor Terminal Crimping Structure
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Solution Overview
Problem
The existing connection methods for external conductor terminals of coaxial electric cables result in a long bare portion of the external conductor, leading to inefficient wiring and potential defects due to the need for unwinding and rewinding of helically wound conductive cables, which complicates the connection process and may result in connection quality issues.
Innovation Solution
A connection structure featuring a cylindrical connector portion with a terminal at one end, where the twined cables are crimped to the connector portion with a ring member fitted around them, restricting the bare portion to the gap between the ring member and the protective coating, thereby minimizing the exposed area and enhancing the connection efficiency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the external conductor is made by helically winding conductive cables and connected to the terminal, then the connection can be established, but the bare portion becomes long and the connection process becomes complex
Solution Approach 1:
The conductive cables are pre-twined into a compact bundle before reaching the connection point. This preliminary action eliminates the need for on-site unwinding and rewinding operations, reducing the bare portion length and simplifying the connection process while maintaining reliable electrical contact
2Ease of manufacture
If the conductive cables are loosened and twined during connection, then the terminal can be connected, but the bare portion length increases and work efficiency decreases
Solution Approach 1:
The cables are pre-twined into a compact configuration before installation. This eliminates time-consuming on-site twining operations and reduces the bare portion that needs to be handled, thereby improving connection ease while minimizing time loss
Solution Approach 2:
The complex twining operation is extracted from the connection process and performed in advance during manufacturing. This separates the preparation phase from the installation phase, making the actual connection simpler and faster
3Ease of operation
If the protective coating is peeled off for connection, then the external conductor can be connected to the terminal, but the bare portion becomes long exposing more area
Solution Approach 1:
The cables are pre-twined to a compact diameter before the protective coating is peeled off. This preliminary compaction reduces the surface area that becomes bare after peeling, thereby maintaining ease of operation while minimizing the exposed area
Data Source
AI summary
A connection structure of an external conductor terminal for connection with an external conductor of an electric cable including the external conductor made up of twined cables enclosing an outer periphery of an insulating coating of one or more internal conductors and a protective coating covering the external conductor, wherein the external conductor terminal has a cylindrical connector portion connected to the external conductor and a terminal portion provided at one end of the connector portion; and the connector portion is fitted around a location on an outer periphery of the insulating coating where the external conductor is laid bare, the twined cables of the external conductor are provided in contact with an outer periphery of the connector portion, a ring member is fitted around outer peripheries of the twined cables and the twined cables are crimped.