Sound insulation door

By combining a threshold-free design with multiple sealing structures, the problem of poor sealing and sound insulation performance of soundproof doors during frequent passage is solved, achieving smooth passage and long-lasting sound insulation effect.

CN224478859UActive Publication Date: 2026-07-10ANHUI CONCH DESIGN & RES INST OF BUILDING MATERIALS CO LTD
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Patent Information

Application Number
CN202521142963.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-05
Publication Date
2026-07-10
Estimated Expiration
2035-06-05

AI Technical Summary

Technical Problem

Existing soundproof doors are easily damaged during frequent passage, affecting their sealing and sound insulation performance. In particular, the bottom door frame and sealing strip are prone to deformation or wear, resulting in poor overall sound insulation.

Method used

The door frame features a thresholdless design with stepped structures on the contact surfaces between the door leaf and the frame, as well as between the two door leaves. A sinkable sealing strip is installed at the bottom. The door frame is fixed with expansion bolts and filled with sound insulation cotton or sound insulation adhesive. The hinges are exposed and use magnetic sealing strips and mechanical automatic lifting sealing strips to improve sealing and sound insulation.

Benefits of technology

It enables smooth passage, extends service life, improves sound insulation, reduces wear and tear on the sealing structure, and enhances sealing performance.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to the technical field of noise control, and discloses a soundproof door which comprises a doorframe (1) without a doorsill and oppositely-opened door leaves (3) installed on the doorframe (1) through hinges (2), step structures used for installing a plurality of sealing pieces are formed on the contact faces of the doorframe (1) and the door leaves (3) and the contact faces of the two door leaves (3), and the door leaves (3) are connected with the doorframe (1) through hinges (2). And a settleable sealing strip (6) is arranged at the bottom of the door leaf (3). The soundproof door is smooth in passing, good in sealing performance and long in service life.
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