Fixing disk for waterproof sheet or heat insulating material, fixing tool, and fixing structure
The fixing disk with inclined notches in the seat portion addresses male screw loosening by self-tightening, maintaining secure fastening of waterproofing and insulating materials on roofs.
JP2026014536APending Publication Date: 2026-01-29TAJIMA ROOFING CO LTD
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Patent Information
- Application Number
- JP2024115684
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2026-01-29
AI Technical Summary
Technical Problem
Existing mechanical fixing methods for waterproofing and insulating materials on roofs face issues with male screw loosening due to vibrations and deformation, leading to insufficient friction and potential detachment.
Method used
The solution involves a fixing disk with multiple inclined notches in the seat portion below the countersink, which interferes with the male screw head to prevent loosening and self-tighten if the fastening force weakens, using inclined notches that guide the screw to rotate in the tightening direction.
Benefits of technology
The fixing disk effectively prevents male screw rotation and loosening, ensuring secure fastening even under vibrational stress and material deformation.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a mechanism for restraining rotational looseness of a male screw, in a construction method for fixing a waterproof sheet or a heat insulating material to a metallic roof backing by a fixing disk and the male screw.SOLUTION: A fixing disk (1) for a waterproof sheet or a heat insulating material used for fixing a waterproof sheet (23) or a heat insulating material (22) to a substrate (21) with a male screw (10), wherein the fixing disk has a through hole (2) for inserting a shaft portion (11) of the male screw and a counterbore (3) for accommodating a head portion (12) of the male screw, a plurality of Cut (5) are provided in a seat portion (4) located below the counterbore, and a direction of the Cut does not pass through a center of the through hole. When the external thread is a right-hand thread, the direction of the Cut is inclined to the left with respect to the direction toward the center of the through-hole in a plan view of the fixing disk.SELECTED DRAWING: Figure 1
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