Hatch mounting structure and hatch construction method

The hatch mounting structure addresses time-consuming waterproofing issues by using a frame-shaped hatch frame and additional frame to seal the waterproof layer, ensuring easy installation and robust waterproofing in wooden buildings.

JP7864599B2Active Publication Date: 2026-05-25TANAKA KOGYO CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TANAKA KOGYO CO LTD
Filing Date
2022-09-01
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Conventional hatch mounting methods, particularly in wooden buildings, face challenges with time-consuming waterproofing installation and edge treatment, leading to potential peeling issues.

Method used

A hatch mounting structure with a frame-shaped hatch frame, a finishing floor, an additional frame, and a waterproof layer, where the waterproof layer is extended to cover the hatch frame's upper surface and sealed by an additional frame's overhang, ensuring double waterproofing and easy installation.

Benefits of technology

The structure provides effective waterproofing by preventing peeling of the waterproof layer and ensuring the hatch frame's structural integrity, facilitating easy installation and enhanced durability.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a hatch mounting structure with good waterproofness and easy construction, and a hatch construction method.SOLUTION: A hatch mounting structure S includes a floor body 14 formed with an opening 14A penetrating vertically, a hatch frame 12 having a frame shape, provided in the opening 14A, fixed to the floor body 14, and having a lower overhang portion 52 projecting outward, a finished floor body 16 provided above the floor body 14 to which the hatch frame 12 is mounted, a waterproof sheet 18 (waterproof layer) provided from the upper surface of the finished floor body 16 to an upper surface 52A of the lower overhang portion 52 in the hatch frame 12, an additional frame 20 mounted to the hatch frame 12 from above, an upper overhang portion 22 provided on the additional frame 20, overhanging to the outside of the hatch frame 12 above the lower overhang portion 52, and covering the end of the waterproof layer on the hatch frame 12 side, and a waterproof portion 24 that closes the gap between the upper overhang portion 22 and the waterproof sheet 18.SELECTED DRAWING: Figure 1
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