A waterproof power adapter

By incorporating the nested fit between the annular positioning groove and the positioning ring wall, and through the innovative connection design between the potting groove and the wiring port, the problem of water leakage in the power adapter in humid environments is solved, material costs and curing heat stress damage are reduced, assembly efficiency is improved, and the service life of the adapter is extended.

CN224289595UActive Publication Date: 2026-05-26FOSHAN SIJU ELECTRONIC TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN SIJU ELECTRONIC TECHNOLOGY CO LTD
Filing Date
2025-05-21
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional power adapters suffer from water leakage in humid, high-humidity, and condensation environments. Furthermore, the full potting process results in high material costs, damage to components due to curing thermal stress, and low assembly efficiency.

Method used

The design employs a nested fit between the annular positioning groove and the positioning ring wall, combined with an innovative connection design between the potting groove and the wiring port. Localized sealant injection reduces the amount of adhesive used and wraps the power cord connection terminals, forming a multi-level sealing structure.

Benefits of technology

It achieves improved sealing, reduced costs, and increased assembly efficiency, making it suitable for high humidity and harsh outdoor environments, and extending the adapter's lifespan.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a waterproof power adapter. The housing has an annular top step; the top step has an annular positioning groove, and the underside of the cover has an annular positioning ring wall that can fit into the positioning groove. The housing has an upward-extending annular surrounding wall outside the positioning groove. The annular surrounding wall, the top step, and the positioning ring wall form a sealing groove for injecting sealant. The housing has a connector for a power cord; the connector extends upward to connect to the sealing groove; the power cord's connector terminal can be inserted into the connector from above. This utility model, through the nested fit of the annular positioning groove and the positioning ring wall, combined with the innovative connection design between the sealing groove and the connector, achieves significant optimization in sealing performance, cost control, and assembly efficiency.
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