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    • 8. 发明授权
    • Self-drilling wall anchor device
    • 自钻墙锚装置
    • US08740527B2
    • 2014-06-03
    • US13547285
    • 2012-07-12
    • Ming-Chia Cheng
    • Ming-Chia Cheng
    • F16B13/06F16B13/00
    • F16B13/003F16B13/061
    • A self-drilling wall anchor device comprises a threaded member having a first threaded section and a second threaded section that provide different diameters, and an outer sleeve having a through hole that provides connective first area, second area, and third area. A second area diameter of the second area is larger than a first diameter of the first threaded section but smaller than a second diameter of the second threaded section. A third area diameter of the third area is larger than the second area diameter of the second area. When the first threaded section and the second threaded section cooperate with the outer sleeve for drilling, the second threaded section blocks the second area and the third area. Arms of the outer sleeve warp and curl out of a gypsum object, not into the gypsum object. The present invention reaches a favorable gripping effect and a preferable anti-retracting performance.
    • 自钻井壁锚固装置包括具有提供不同直径的第一螺纹部分和第二螺纹部分的螺纹部件和具有提供连接第一区域,第二区域和第三区域的通孔的外部套筒。 第二区域的第二区域直径大于第一螺纹部分的第一直径,但小于第二螺纹部分的第二直径。 第三区域的第三区域直径大于第二区域的第二区域直径。 当第一螺纹部分和第二螺纹部分与用于钻孔的外套管配合时,第二螺纹部分阻挡第二区域和第三区域。 外套的臂扭曲并卷曲出石膏物体,不能进入石膏物体。 本发明达到良好的夹持效果和优选的抗回缩性能。