Earthquake-resistant door components and earthquake-resistant doors equipped therewith

JP7874846B2Active Publication Date: 2026-06-17石川 润一
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
石川 润一
Filing Date
2025-01-15
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing earthquake-resistant door components made from resin materials are thin, lack sufficient mechanical strength and durability, require delicate handling, and are prone to detachment during earthquakes, hindering door opening and necessitating specialized installation, which limits their widespread adoption.

Method used

A rectangular, thin plate-shaped earthquake-resistant door member made from metal or ceramic materials with a gradually decreasing thickness and surface treatments for enhanced friction and low-friction layers, allowing it to maintain position and reduce opening force during earthquakes.

Benefits of technology

The door member provides improved durability, ease of handling, and reliable door opening with reduced force, enabling widespread adoption without specialized installation and enhancing disaster prevention during earthquakes.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide an earthquake-resistant door member used to prevent a door opening operation of a door body in a closed state from being hindered by deformation of a door frame body, and an earthquake-resistant door to which the earthquake-resistant door member is attached.SOLUTION: An earthquake-resistant door component is made of metal or ceramic, includes a first surface 20 that abuts against a door frame and a second surface 10 on the opposite side, and has a tapered portion formed so that a distance between the first surface 20 and the second surface 10 continuously decreases from a maximum thickness to a minimum thickness in the short direction. At least a rear portion 21 of the first surface at or near the maximum plate thickness portion is subjected to a surface roughening process S, and a low-friction layer C is formed on the second surface 10.SELECTED DRAWING: Figure 4
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