Steel stoving varnish fireproof door

By using a combination structure such as a rotary handle and worm in steel painted fire doors, the connection strength between the door and the door frame is enhanced, and the locking mechanism between the worm and worm gear is used to solve the problem of door clearance under flame impact, achieving higher sealing and impact resistance.

CN222649734UActive Publication Date: 2025-03-21LIUPANSHUI HONGGUO MEINAI SECURITY DOOR CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202420886558.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-26
Publication Date
2025-03-21
Estimated Expiration
2034-04-26

AI Technical Summary

Technical Problem

Existing steel painted fire-proof doors are prone to deformation of the hinge and door lock under the impact of flames, resulting in a gap between the door and the door frame, which in turn allows the fire smoke to pass through the gap and enter the other side.

Method used

The combined structure of the rotating handle, rotating shaft, worm, worm gear, connecting shaft, stud, threaded block, limit plate, limit frame and guide frame is adopted to enhance the connection strength between the door and the door frame, and to prevent the door from shaking when impacted through the locking mechanism between the worm and worm gear.

Benefits of technology

It effectively avoids deformation of the hinge and the door lock under the impact of flame, prevents gaps between the door and the door frame, and enhances the sealing and impact resistance of the fire door.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses a steel stoving varnish fireproof door which comprises a door frame body, a steel stoving varnish fireproof door body is arranged in the door frame body in a hinged mode through hinges, a protective shell is fixedly arranged on the front side of the steel stoving varnish fireproof door body, a rotating handle is rotationally arranged in the protective shell, a rotating shaft is fixedly arranged on the surface of the rotating handle, and the rotating shaft is fixedly connected with the door frame body. And a worm is fixedly arranged at the left end of the rotating handle. Through the arrangement of a rotating handle, a rotating shaft, a worm, a worm gear, a connecting shaft, a stud, a threaded block, a limiting plate, a first limiting frame and a first guide frame, connection between the steel stoving varnish fireproof door and a door frame is enhanced conveniently, and the situation that hinges and a door lock deform due to flame impact force is avoided; according to the steel stoving varnish fireproof door, the situation that a gap is formed between the steel stoving varnish fireproof door and the door frame is avoided, a worm and a worm wheel are arranged, a connecting shaft can be locked, accordingly, a stud is locked, and the situation that when the steel stoving varnish fireproof door is subjected to impact force, the steel stoving varnish fireproof door shakes, and consequently a limiting plate slides out of a first limiting frame is avoided.
Need to check novelty before this filing date? Find Prior Art