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    • 84. 发明授权
    • Self-drilling expansion fastener and method of forming same
    • 自钻式膨胀紧固件及其形成方法
    • US09309906B2
    • 2016-04-12
    • US14083641
    • 2013-11-19
    • Fu-Chuan Hsu
    • Fu-Chuan Hsu
    • F16B13/04F16B5/06F16B13/00F16B13/08
    • F16B5/0642B21D51/36B21D53/24F16B13/003F16B13/061F16B13/0808
    • A self-drilling expansion fastener is integrally formed of a sheet metal material for locking two or more sheet workpieces together, and includes an expansion structure and a drill structure. The expansion structure has a plurality of internal threads and force-distributing bars. The drill structure has a chip guard for covering a head of the expansion structure, and a drill forward projected from the chip guar for self-drilling a hole. When an externally threaded element is screwed into the expansion structure to mesh with the internal threads, the force-distributing bars are brought to expand outward and are finally compressed into a folded state to thereby tightly lock the sheet workpieces to one another. A method of forming the self-drilling expansion fastener is also disclosed.
    • 自钻式膨胀紧固件由用于将两个或更多个片材工件锁定在一起的金属板材一体地形成,并且包括膨胀结构和钻孔结构。 膨胀结构具有多个内螺纹和力分配杆。 钻头结构具有用于覆盖膨胀结构的头部的芯片保护罩和从芯片齿圈向前突出的用于自钻孔的钻头。 当外螺纹元件拧入膨胀结构以与内螺纹啮合时,分力杆向外膨胀并最终被压缩成折叠状态,从而将片材工件彼此紧紧地锁定。 还公开了一种形成自钻扩张紧固件的方法。