Aluminum material window frame fixing combination tooth inlay drill tail screw

By designing a combination of rotary threaded section and twisted threaded section for the toothed self-drilling screw, the problems of difficult driving, inaccurate positioning, and poor chip removal were solved, enabling a fast and reliable installation process and improving construction efficiency and safety.

CN224717998UActive Publication Date: 2026-09-04HAIYAN NEW SHENGDA FASTENER
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Patent Information

Application Number
CN202522356788.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-06
Publication Date
2026-09-04
Estimated Expiration
2035-11-06

AI Technical Summary

Technical Problem

Existing screws have problems such as difficulty in driving into aluminum and cement substrates, inaccurate positioning, and poor chip removal, which affect construction efficiency and safety.

Method used

A combined toothed drill tail screw was designed, including a screw head, a screw shank, and a screw tail. The screw shank surface is provided with a rotary thread section and a twist thread section. The rotary thread section has a V-shaped missing tooth groove, and the twist thread section has a spiral chip removal groove. The diamond-shaped drill tail is used for initial cutting to form an efficient chip removal and chip removal structure.

Benefits of technology

It enables rapid and reliable entry and precise positioning, improves construction efficiency, reduces the risk of jamming, and ensures the accuracy of installation and continuous operation capability.

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Abstract

The utility model proposes a kind of combined tooth inlaying drill tail screw for aluminium window frame fixation, to solve the problems of existing drill tail screw attack difficulty, inaccurate positioning and unsmooth chip removal, including screw head, screw rod and screw tail, screw head has nut and gasket, the upper end surface and lower end surface of nut are respectively provided with recess and gasket, screw rod surface is equipped with rotation thread section and twisted thread section, multiple V-shaped toothless grooves are equipped on rotation thread section and form broken mouth tooth structure, twisted thread section is equipped with spiral chip flute, screw tail is welded with diamond drill tail, the utility model realizes accurate positioning and rapid tapping by diamond drill tail, rotation thread section efficiently cuts cement matrix, twisted thread section timely removes chip, significantly improves attack efficiency and installation accuracy, and is suitable for aluminium window frame fixation in high-strength cement wall.
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