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    • 7. 发明公开
    • Tapping screw
    • Gewindeschneidende Schraube
    • EP1840390A2
    • 2007-10-03
    • EP07251299.9
    • 2007-03-27
    • Simpson Strong-Tie Co., Inc.
    • Hale, Troy
    • F16B25/10F16B35/04
    • F16B25/10F16B25/0015F16B25/0057F16B25/0063F16B25/0078F16B25/0089F16B35/041F16B2033/025
    • A tapping screw (100) is disclosed for use in composite wood material. The tapping screw (100) includes wings (116) extending radially outward from the screw shank (102). As the winged screw is driven down into a composite wood material, the wings (116) shear off the composite material and granulate the composite material with which the wings (116) come into contact. As the granulated material moves upward along the shank (102), when the screw head (106) enters the composite material, the granulated material at the top of the screw bore is forced out of the screw bore and is removed The counterbore created by the wings (116) prevents the formation of an annular ring at the surface and allows the screw head (106) to be countersunk into the composite material.
    • 公开了用于复合木材材料的自攻螺钉(100)。 自攻螺钉(100)包括从螺杆(102)径向向外延伸的翼(116)。 当翼形螺钉被向下驱动到复合木材材料中时,翼部(116)剪切复合材料并使与翅片(116)接触的复合材料成粒。 当颗粒材料沿着柄(102)向上移动时,当螺钉头(106)进入复合材料时,螺钉孔顶部的造粒材料被迫从螺孔中排出并被移除。由 翼(116)防止在表面处形成环形圈,并允许螺钉头(106)沉入复合材料中。