Power Pin Socket Locking for Alignment and Leak Prevention
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Solution Overview
Problem
Conventional power connections for arc process operations face issues with loose connections, fluid leaks, and inefficient electrical transfer due to improper alignment and single-element locking mechanisms, posing safety and efficiency risks during operations like welding or plasma cutting.
Innovation Solution
A multi-diameter power pin and receiving block system with separate axial and rotational locking mechanisms, allowing secure one-handed connection and ensuring reliable electrical and fluid transfer by engaging rotational prevention elements and clamp assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-element locking mechanism is used to secure the power pin, then the device complexity is reduced, but the reliability of the connection deteriorates due to loose connections and improper alignment
Solution Approach 1:
The locking mechanism is segmented into two independent functional elements: an axial locking element that prevents pull-out forces, and a rotational locking element that prevents rotation. This segmentation allows each element to specialize in one type of constraint, improving overall connection reliability without requiring a single complex multi-functional mechanism.
Solution Approach 2:
The power pin serves as an intermediary component between the power source and the torch cable, incorporating both axial and rotational prevention features. This intermediary structure mediates the connection by providing dedicated features (such as protrusions and grooves) that engage with corresponding receptacles in the receiving block, ensuring reliable electrical and fluid transfer.
2Reliability
If a rotational prevention element is added to the power pin, then the reliability of electrical and fluid transfer is improved, but the device complexity increases
Solution Approach 1:
The rotational prevention element is merged with the power pin structure itself rather than being a separate component. The power pin incorporates features such as protrusions or keyed sections that directly engage with rotational receptacles in the receiving block, combining the functions of electrical connection, fluid transfer, and rotational prevention into a single integrated component.
Solution Approach 2:
Rotational prevention features are implemented locally at specific locations on the power pin where they are most effective. For example, protrusions or keyed sections are positioned at the interface with the receiving block to provide rotational constraint exactly where needed, without adding complexity to the entire power pin structure.
3Ease of operation
If separate axial and rotational locking mechanisms are implemented, then the ease of operation is improved by enabling one-handed connection, but the device complexity increases
Solution Approach 1:
The connector is designed to perform its own alignment and locking functions without requiring external tools or two-handed operation. The power pin's geometric features (protrusions, grooves, tapered sections) automatically engage with corresponding receptacles in the receiving block, enabling the user to complete the connection with a single hand while maintaining stability.
Solution Approach 2:
The power pin and receiving block employ asymmetric geometric features for rotational prevention, such as keyed sections or protrusions that fit into specific receptacles. This asymmetry provides inherent rotational guidance and locking, eliminating the need for separate rotational adjustment mechanisms and simplifying the user operation.
Data Source
AI summary
An electrical connection system for an arc process system is disclosed. The electrical connection system includes a power pin and a receiving block. The power pin includes a rotational prevention element. The receiving block is configured to receive the power pin and includes a clamp assembly and one or more receptacles. The clamp assembly is configured to selectively engage the power pin to restrict axial movement of the power pin with respect to the receiving block. The one or more receptacles are configured to selectively engage the rotational prevention element and prevent rotational movement of the power pin with respect to the receiving block.