Fire-resistant exterior wall structure

The fire-resistant exterior wall structure uses vertical bars and multiple fireproof layers to prevent fire spread, addressing the risk of flame radiation through windows.

JP2025180507AActive Publication Date: 2025-12-11MISAWA HOMES CO LTD
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Patent Information

Application Number
JP2024087880
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-30
Publication Date
2025-12-11
Estimated Expiration
2044-05-30

AI Technical Summary

Technical Problem

Exterior walls are susceptible to fire spreading due to flame radiation through windows, posing a risk of fire spreading from the perimeter of the window.

Method used

A fire-resistant exterior wall structure is designed with vertical bars, a fireproof frame body, and multiple layers of fireproof materials to prevent flames from reaching the exterior wall and vertical bars, both from the outside and inside the building.

Benefits of technology

The structure effectively prevents the spread of fire by blocking flames with multiple fireproof layers and a robust frame system, ensuring the exterior wall and vertical bars remain unaffected by fire.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a fire-resistant exterior wall structure that is less susceptible to the spread of fire.SOLUTION: A fire-resistant exterior wall structure (1) includes: an exterior wall (10), a pair of vertical bars (22 and 27) spaced apart from each other on the left and right sides and extending vertically from the lower edge to the upper edge of an opening (19) at positions spaced apart from the left and right edges of the opening (19) of the exterior wall (10) to the center of the opening (19); a fire-resistant frame body (30) fitted between the vertical bars (22 and 27) and joined to the lower and upper edges of the opening (19) and the vertical bars (22 and 27); a frame (40) fitted inside the fire-resistant frame body (30) and joined to the inner periphery of the fire-resistant frame body (30); a sash (70) attached to the frame (40); a first fire-resistant layer (80) attached to the surface of the exterior wall (10), vertical bars (22 and 27) and fire-resistant frame body (30); and a second fir-resistant frame body (90) attached to the back surface of the exterior wall (10), vertical bars (22 and 27) and fire-resistant frame body (30).SELECTED DRAWING: Figure 3
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Citation Information

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