Electric Pump Connector Anchoring Prevents Cable Disconnection
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Solution Overview
Problem
Existing electric pump systems face issues with accidental disconnection of the electrical cable, leading to interruptions in power supply and compromised operation due to the loose connection between the cable and the terminal strip.
Innovation Solution
A centrifugal electric pump assembly with a connector system featuring a tubular tab and complementary anchoring elements, along with a tubular body and terminal strip, ensures secure connection through a screw or pin fixation and a sealable design, preventing accidental disconnection and providing a secure electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cable is inserted in the electrical box and connected to a terminal strip, then the electric pump can be powered, but the cable can slide out accidentally causing power interruption
Solution Approach 1:
The patent applies preliminary action by providing a dedicated connector with anchoring elements (screw, pin, or bayonet mechanism) that must be engaged before the cable can be considered securely connected. The connector includes pre-positioned anchoring features that prevent accidental disconnection, requiring deliberate action to disconnect rather than allowing accidental sliding out during operation.
Solution Approach 2:
The patent introduces an intermediary connector component between the cable and the electrical box terminal strip. This connector serves as a mediator that provides secure mechanical attachment through anchoring elements (screw holes, pin holes, or bayonet engagement features) while maintaining electrical connection, thereby preventing the cable from sliding out accidentally.
2Reliability
If a connector with anchoring elements is used to prevent accidental disconnection, then connection security is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single connector component: electrical connection (via terminal strip interface), mechanical anchoring (via screw holes, pin holes, or bayonet engagement features), and structural support. This integration reduces the need for separate components while maintaining connection security, thereby limiting the increase in device complexity.
Solution Approach 2:
The connector is designed with multi-functionality to serve multiple purposes: providing electrical connection to the terminal strip, securing the cable through various anchoring mechanisms (screw, pin, or bayonet), and maintaining structural integrity. This universal design approach allows a single component to fulfill multiple roles, reducing overall system complexity.
Data Source
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AI summary
A centrifugal electric pump assembly (10) comprising a pump body (11), which has a wet section, constituted by a volute and by intake and delivery ducts, a casing (12) containing an electric motor, which faces the pump body (11), and an electrical box (13), at the end of the casing (12) that is opposite with respect to the pump body (11); the electric pump assembly (10) further comprises a connector (19) for electric power supply, which is shaped so as to be complementary to a tab (18) of the electrical box (13) and has at least one element (22) for fixing the connector (19) to the electrical box (13).