公开(公告)号：US4599024A

公开(公告)日：1986-07-08

申请号：US571713

申请日：1984-01-18

申请人： Nariaki Sano ,  Tetsuo Amano

发明人： Nariaki Sano ,  Tetsuo Amano

IPC分类号： F16B25/10 ,  F16B25/00

CPC分类号： F16B25/103 ,  F16B25/0021 ,  F16B25/0084 ,  Y10T408/9093

摘要： A drill screw having an integral driving shank, head, and entering end portion. The shank has formed on it thread convolutions of uniform outer and root diameters. The entering end portion has a cylindrical portion coaxial with the shank provided with two flutes inclined with respect to the center axis of the cylindrical portion and disposed on opposite sides of it, and end surfaces of roof-shape. Each of the flutes includes conical flute surfaces. The intersection of each of the conical flute surfaces and each of the end surfaces forms a cutting edge. And each of the conical flute surfaces forms a rake angle with respect to one of the cutting edges, while each of the end surfaces forms a relief angle with respect to one of the cutting edges.In a preferred construction each fluted surface is located outside or beyond a plane containing the center axis of the drill screw, and the fluted surfaces each have a vertex angle of 35.degree. to 54.degree..

摘要翻译： 一种具有整体驱动柄，头部和进入端部的钻螺丝。 柄上形成有均匀外径和根直径的螺纹卷。 入口端部具有与柄同轴的圆柱形部分，其具有相对于圆柱形部分的中心轴线倾斜并设置在其相对侧上的两个凹槽和顶部形状的端面。 每个凹槽包括圆锥形凹槽表面。 每个锥形槽表面和每个端面的交点形成切削刃。 并且每个锥形凹槽表面相对于一个切削刃形成前角，而每个端面相对于其中一个切削刃形成一个倾斜角。 在优选的结构中，每个槽纹表面位于包含钻螺丝的中心轴线的平面的外侧或外侧，并且凹槽表面各自具有35°至54°的顶角。

公开(公告)号：US4329099A

公开(公告)日：1982-05-11

申请号：US113049

申请日：1980-01-17

申请人： Mituo Shimizu ,  Hidenori Miyake

发明人： Mituo Shimizu ,  Hidenori Miyake

IPC分类号： F16B25/04 ,  F16B25/10 ,  F16B25/00

CPC分类号： F16B25/10 ,  F16B25/0031 ,  F16B25/0057 ,  F16B25/0068

摘要： A self-drilling and self-extruding fastener having a constant cross section stem and a tapering end portion terminating in a sharp point. The stem is provided with a pair of screw threads of like configuration. The tapering portion is provided with a third thread which begins at the pointed forward end in a very steep lead angle which functions as a drilling portion and thereafter the lead angle decreases so that the third thread may function to extrude the metal surrounding a guide opening formed by the drilling portion. Depending upon the screw thread configurations, one or both of the screw threads cooperate with the third thread to further extrude sheetmetal surrounding the guide opening into a cylindrical bore, after which the screw threads self-tap into the wall of the cylindrical bore of the projection and thereby firmly grip the sheetmetal.

摘要翻译： 自钻和自挤压紧固件具有恒定的横截面杆和终止于尖锐点的锥形端部。 杆设置有一对类似构造的螺纹。 锥形部分设置有第三螺纹，其以尖锐的前端以非常陡的引导角开始，其作为钻孔部分，此后引导角度减小，使得第三螺纹可用于挤压形成的引导开口周围的金属 通过钻孔部分。 根据螺纹构造，一个或两个螺纹螺纹与第三螺纹配合，以进一步将围绕引导孔的金属板拉伸成圆柱形孔，之后螺纹自身进入突出部的圆柱孔的壁 从而牢固地夹紧钣金。

公开(公告)号：US4136597A

公开(公告)日：1979-01-30

申请号：US826555

申请日：1977-08-22

申请人： Akira Takemura ,  Tadao Utsumi

发明人： Akira Takemura ,  Tadao Utsumi

IPC分类号： B21J5/02 ,  B21J13/02 ,  B21K1/46 ,  B21K1/56 ,  F16B25/10 ,  F16B25/00

CPC分类号： F16B25/0084 ,  B21K1/56 ,  F16B25/106

摘要： A drill screw is produced by a pinch pointing die comprising a pair of substantially identical drill point forming portions each of which includes a half conical recess, a half cylindrical recess and a half truncated conical recess. The drill screw thus produced comprises, therefore, substantially identical two half drill point portions each of which includes a half conical portion, a half cylindrical portion and a half truncated conical portion.

摘要翻译： 钻头螺钉由捏合模具制成，其包括一对基本相同的钻孔形成部分，每个钻头形成部分包括半圆锥形凹部，半圆柱形凹部和半圆锥形凹部。 因此，如此制造的钻螺杆包括基本相同的两个半钻头部分，每个钻头点包括半圆锥形部分，半圆柱形部分和半圆锥形部分。

公开(公告)号：US4241638A

公开(公告)日：1980-12-30

申请号：US14919

申请日：1979-02-26

申请人： Mituo Shimizu ,  Hidenori Miyake

发明人： Mituo Shimizu ,  Hidenori Miyake

IPC分类号： F16B25/04 ,  F16B25/10 ,  F16B25/00

CPC分类号： F16B25/10 ,  F16B25/0031 ,  F16B25/0057 ,  F16B25/0068

摘要： A self-extruding fastener having a head provided with a cross groove, a stem having two screw threads and a tapering portion terminating at a sharp pointed forward end adapted to form a guide opening in a thin sheet of metal. A third screw thread generates in a position midway between said two screw threads and in a portion where the stem ends and the tapering portion begins, and extends to the pointed forward end, while the two screw threads disappear in the tapering portion. Therefore, the self-extruding fastener according to the invention comprises three sections, that is, two screw thread section, three screw thread section and one screw thread section.

摘要翻译： 一种自挤出紧固件，其具有设置有十字槽的头部，具有两个螺纹的杆，以及终止于尖锐的尖端的锥形部分，其适于在薄金属片中形成引导开口。 第三螺纹在所述两个螺纹之间的中间位置产生，并且在杆端部和锥形部分开始的部分中产生并延伸到尖的前端，同时两个螺纹消失在锥形部分中。 因此，根据本发明的自挤压紧固件包括三个部分，即两个螺纹部分，三个螺纹部分和一个螺纹部分。