A sealing structure for a temperature fuse assembly

By using a flame-retardant plastic shell and a flexible sealing plug in close fit, the problems of poor resistance to external damage and low production efficiency of temperature fuse sealing methods are solved, achieving a high-efficiency and low-cost sealing effect, and improving product consistency and safety.

CN224708758UActive Publication Date: 2026-09-01TENG ZE DIAN GONG SHANG HAI YOU XIAN GONG SI
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Patent Information

Application Number
CN202522110801.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-29
Publication Date
2026-09-01
Estimated Expiration
2035-09-29

AI Technical Summary

Technical Problem

Existing thermal fuses suffer from poor resistance to external damage, long production cycles, high costs, and low efficiency due to their sealing methods.

Method used

The shell is made of flame-retardant plastic and the sealing plug is flexible. The tight fit between the sealing plug and the shell achieves double sealing, which simplifies the production process. The hardness and wear resistance of the flame-retardant plastic, combined with the snap-fit ​​and abutment structure, ensures sealing and consistency.

Benefits of technology

It achieves stable sealing, improves production efficiency, reduces production costs, enhances product consistency and safety, reduces volume, and simplifies the installation process.

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Abstract

This application discloses a sealing structure for a temperature fuse assembly, relating to the technical field of fuses. It includes a housing made of flame-retardant plastic, a fuse, a wire, and a resilient sealing plug. The fuse is disposed inside the housing, and the wire is connected to the fuse. The housing has an opening, and the sealing plug is inserted into the housing and engages with the opening to seal the housing. The sealing plug fits tightly against the inner wall of the housing. The sealing plug has a wire through-hole for the wire to pass through, and the inner wall of the wire through-hole fits tightly against the wire. The tight fit between the sealing plug and the inner wall of the housing provides a first layer of sealing, preventing moisture and dust from entering through the housing opening. The tight fit between the wire through-hole and the wire provides a second layer of sealing, preventing moisture and dust from seeping into the housing through the gaps in the wire. Furthermore, the housing and sealing plug structure is simple; the sealing operation is completed simply by inserting the sealing plug into the housing, simplifying the production process, improving production efficiency, and reducing production costs.
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