Air pipe fixing self-tapping screw tip protection cap and air pipe connecting structure
By designing protective caps for the tips of self-tapping screws used to fix ducts, the problems of rusting, loosening, and airflow leakage caused by exposed screw tips were solved. This resulted in structural stability, good sealing performance, improved duct service life and safety, and simplified installation and maintenance.
CN224187876UActive Publication Date: 2026-05-01CHANGSHA DACHUAN REFRACTORY MATERIAL CO LTD
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Patent Information
- Application Number
- CN202521290518.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2035-06-23
AI Technical Summary
Technical Problem
Exposed tips of self-tapping screws inside the duct can lead to rust and loosening, causing airflow leakage and safety hazards, and affecting insulation performance and service life.
Method used
Design a protective cap for the tip of a self-tapping screw used for fixing ducts, including a nut, a cap body, and a sealing ring. The screw tip is covered by a threaded connection and the sealing ring cooperate to form a stable sealing structure.
Benefits of technology
It achieves structural stability and good sealing performance, improves the service life and safety of air ducts, reduces airflow leakage and safety hazards, simplifies the installation and maintenance process, and reduces maintenance costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides an air pipe fixing self-tapping screw tip protective cap and an air pipe connecting structure, the protective cap is used for being installed at the self-tapping screw tip for protection, and the protective cap comprises a nut, a cap body and a sealing ring; the nut and the cover body are integrally connected, one end of the nut is sealed by the cover body, the other end of the nut is an open end with an internal thread, and the internal thread is used for being in threaded connection with an external thread of a self-tapping screw; a sealing groove is formed in the opening end face of the nut, the sealing ring is embedded in the sealing groove, and the sealing ring protrudes out of the opening end face of the nut so as to extrude the sealing ring to achieve sealing of the opening end of the nut when the nut is connected to the tip end of the self-tapping screw in a threaded mode. The protective cap for the tip of the air pipe fixing self-tapping screw has the advantages of being firm in structure, good in sealing performance, convenient to install, long in service life and good in safety.
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