Charging Pile Interface Sealing Ring Retention Against Cable Pull
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Solution Overview
Problem
Existing sealing devices for charging pile interfaces lack a fixing assembly, leading to loosening or falling off of the sealing ring due to long-term external pulling of the wiring, compromising the waterproof performance.
Innovation Solution
A sealing device with a fixed buckle and detachable buckle system, where the sealing ring is embedded between the interface and the power cord, and the buckles are connected through screws, featuring an I-shaped cross-section sealing ring and arc-shaped slots to ensure tight sealing and prevent power cord loosening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sealing ring is embedded between the interface and the power cord without a fixing assembly, then the sealing ring can be easily installed, but the sealing ring is prone to loosening or falling off due to long-term external pulling of the wiring
Solution Approach 1:
The fixing assembly is divided into a fixed buckle attached to the charging pile housing and a detachable buckle attached to the power cord. This segmentation allows the sealing ring to be secured through the collaboration of two separate components rather than a single complex fixture, maintaining installation simplicity while ensuring reliability.
Solution Approach 2:
The fixed buckle is pre-installed on the charging pile housing before the power cord is connected. This preliminary action ensures that the sealing ring is already positioned and secured in place before the power cord exerts any pulling force, preventing loosening or falling off during operation.
2Reliability
If the sealing ring is secured with a complex fixing assembly, then the sealing ring stability is improved, but the device complexity increases
Solution Approach 1:
The fixing assembly is segmented into two simple buckles rather than one complex mechanism. The fixed buckle attaches to the housing and the detachable buckle attaches to the power cord, creating a distributed simple structure that is easier to manufacture and install while providing reliable sealing ring stabilization.
Solution Approach 2:
The detachable buckle provides dynamic adjustment capability, allowing the fixing assembly to adapt to different power cord positions and tensions. This dynamic feature maintains simplicity by using a straightforward buckle mechanism rather than a complex rigid structure, while ensuring the sealing ring remains stable under varying operational conditions.
3Object-affected harmful factors
If the sealing ring is compressed tightly against the interface, then the waterproof effect is improved, but the force required to maintain the compression increases
Solution Approach 1:
The fixed buckle is pre-installed on the charging pile housing to provide initial compression force on the sealing ring. This preliminary compression ensures the sealing ring is already tightly sealed against the interface before the power cord is connected, maintaining waterproof performance without requiring excessive force during assembly.
Solution Approach 2:
The detachable buckle allows for dynamic compression adjustment. When attached to the power cord, it provides additional compression force to maintain the waterproof seal under operational tension. The dynamic nature of the buckle system enables it to adapt to varying forces, maintaining effective sealing without requiring permanently high compression force.
Data Source
AI summary
A sealing device for a charging pile interface includes a charging pile housing, where an upper end of the charging pile housing is fixedly connected to an upper cover through a bolt; left and right sides of the charging pile housing are fixedly provided with interfaces, respectively; two power cords are provided in the interfaces on the left and right sides, respectively; a sealing ring is embedded between the interface and the power cord to ensure sealing; each of left and right sides of an inner bottom of the charging pile housing is fixedly provided with a fixed buckle; and the fixed buckle is detachably connected to a detachable buckle. In the sealing device, the fixed buckle and the detachable buckle are fixed, such that the fixed buckle and the detachable buckle make the sealing ring abut against the interface.