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US 2025/0146519 A1Published application
Screw for fastening different
AssigneeSanshu Corporation
InventorMasaki TANIGUCHI
Life of this patent
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Abstract
A more improved screw for fastening different materials is provided. The screw for fastening different materials is configured such that a cross-sectional shape of a sharp head part includes three vertexes, lines connecting the respective vertexes each have a curved shape projecting outward, and ridge parts, and formed by connecting vertexes of the sharp head part are helical toward the tip end along the same direction as a helical direction of a screw thread of a main screw part.
Claims1
A screw for fastening different materials comprising:
- a main screw part in which fastening objects which are made of different materials from each other in a fastened state are positioned, the main screw part having a constant outer diameter and formed with a screw thread on an outer peripheral surface;
- a sharp head part formed continuously from an edge of the main screw part and diametrically contracting toward a tip end;
- wherein
- the fastening objects in the fastened state are not positioned in the sharp head part,
- a cross-sectional shape of the sharp head part includes three vertexes, lines connecting the respective vertexes each have a curved shape projecting outward, and
- three ridge parts formed by connecting the respective vertexes on an outer peripheral surface of the sharp head part are helical toward the tip end along the same direction as a helical direction of the screw thread of the main screw part.
3 more elements
Dependencies are inferred from the claim text.