公开(公告)号：EP3354913A1

公开(公告)日：2018-08-01

申请号：EP18152239.2

申请日：2018-01-18

申请人： Chao, Ying-Chin

发明人： Chao, Ying-Chin

IPC分类号： F16B25/00 ,  F16B25/10

CPC分类号： F16B25/103 ,  F16B25/0015 ,  F16B25/0057 ,  F16B25/0068 ,  F16B25/0078 ,  F16B25/0084

摘要： A structure of a self-drilling screw is disclosed. The screw includes a screw head (21) and a shank (22) extending downward from the screw head (21). The shank (22) has an outer circumferential surface, around which a thread (23) is circumferentially formed. The shank (22) has a lower end forming a drilling tip section (24). The thread (23) is extended or not extended into the drilling tip section (24). The drilling tip section (24) is formed with at least one first chip removal groove (25). The first chip removal groove (25) has an upper end and at least one second chip removal groove (26) is arranged to extend from the upper end along the shank (22) in a direction toward the screw head (21).

公开(公告)号：EP3364056A1

公开(公告)日：2018-08-22

申请号：EP17185216.3

申请日：2017-08-08

申请人： Chao, Ying-Chin

发明人： Chao, Ying-Chin

IPC分类号： F16B25/00 ,  F16B25/10

CPC分类号： F16B25/103 ,  F16B25/0015 ,  F16B25/0084

摘要： Disclosed is a chip removal structure of a screw. The screw (2, 3) includes a screw head (21, 31). A shank (22,32) extends downward from the screw head (21, 31). The shank (22,32) has an outer circumferential surface on which a thread (23, 33) is formed in a surrounding form. The shank (22, 32) has a lower end that is formed with a tapering tail section (24, 34). The thread (23, 33) is extended to the tapering tail section (24, 34). The tapering tail section (24,34) is formed, through cutting or pressing, with two or more chip removal grooves (25,35). The spacing distance of the chip removal grooves (25,35) can be adjusted as desired. The chip removal grooves (25, 35) are set at an inclination angle and any one of the chip removal grooves (25, 35) may exceed or may not exceed a screw center line (A1). The chip removal grooves (25) on the left side are each 0.5 to 4.5 times in width of the chip removal grooves (25) on the right side.

公开(公告)号：EP3330552A1

公开(公告)日：2018-06-06

申请号：EP17201767.5

申请日：2017-11-15

申请人： Chao, Ying-Chin

发明人： Chao, Ying-Chin

IPC分类号： F16B25/00

CPC分类号： F16B25/0042 ,  F16B25/0015 ,  F16B25/0078

摘要： A structure of a screw is provided, including a shank (22) extending downward from a screw head (21). The shank (22) has an outer circumferential surface on which a thread (23) extending spirally around is formed. The shank has a lower end forming a tapering tail section (24). The thread does not extend into the tapering tail section. The tapering tail section is provided with at least one rib (25) raised on a surface thereof. The rib has an edge that is made in a wavy-toothed form (251) so as to improve the capability of the screw for cutting and chip removal and also to reduce a screw-in torque of a screwing operation of the screw to thereby achieve an effect of saving labor and time in conducting an operation and also to prevent the occurrence of defects of wood cracking.

公开(公告)号：EP2289647A1

公开(公告)日：2011-03-02

申请号：EP09169014.9

申请日：2009-08-31

申请人： Chao, Ying-Chin

发明人： Chao, Ying-Chin

IPC分类号： B21H3/02 ,  F16B25/10

CPC分类号： B21H3/027 ,  F16B25/0031 ,  F16B25/0052 ,  F16B25/0057 ,  F16B25/0063 ,  F16B25/103

摘要： Disclosed is a method for manufacturing a screw (4) with helical chip discharge channel, including providing a blank (41), subjecting an end of the blank to form a head (42) and subjecting the blank to rolling to form one or more sections of threads (43). The screw (4) is formed with one or more helical chip discharge channels (442), which can be of different helical angle according the different applications. The chip discharge channel (442) can be formed by milling, rolling, or combined rolling and milling. The chip discharge channel is extended into the threads (43) to form tapping edges. As such, the tapping operation is made effortless and the shape of the tapped thread excellent. The extending angle of the chip discharge channel (442) can be changed according to different materials of the workpiece to be fastened. The length of the chip discharge channel can be selected according to different applications.

摘要翻译： 本发明公开了一种用于制造螺钉（4）配有螺旋形切屑排出通道，包括：提供坯件（41），在所述坯件的端部进行，以形成一个头部（42）和对所述坯件以滚动的方法，以形成一个或多个部分 的螺纹（43）。 螺钉（4）被形成为与一个或多个螺旋切屑排出通道（442），其可以是不同的螺旋角gemäß不同应用的。 切屑排出通道（442）可以通过铣削来形成，滚动或组合轧制和铣削。 切屑排出通道延伸到螺纹（43），以形成攻丝边缘。 作为测试，攻丝手术由轻松和螺纹螺纹优秀的形状。 切屑排出通道（442）的延伸角度可雅丁于工件的不同材料被紧固被改变。 切屑排出通道的长度可以雅丁到不同的应用程序来选择。

公开(公告)号：EP4123188A1

公开(公告)日：2023-01-25

申请号：EP22180591.4

申请日：2022-06-23

申请人： Chao, Ying-Chin

发明人： Chao, Ying-Chin

IPC分类号： F16B25/00 ,  F16B25/10

摘要： A screw includes a head (2), a shank (3) defining an axis (Z) and including a main body (31) connecting said head (2) and a tip portion (32) connecting an end of said main body (31) opposite to said head (2), a thread (4) helically extending around said shank (3), and a plurality of chip discharge grooves (5) indented into said shank (3). Each discharge groove (5) is inclined at an angle of between 5 and 35 degrees relative to the axis (Z). At least two of the chip discharge grooves (5) are parallel with each other.

公开(公告)号：EP3855028A1

公开(公告)日：2021-07-28

申请号：EP21152821.1

申请日：2021-01-21

申请人： Chao, Ying-Chin

发明人： Chao, Ying-Chin

IPC分类号： F16B25/00 ,  F16B25/10

摘要： A screw includes a head (2), a shank (3), and a collecting groove (30). The shank (3) extends axially from the head (2), and includes a leading end (4) opposite to the head (2), and a thread unit (5) extending helically around an axis (L) of the shank (3). The collecting groove (30) is disposed on the shank (3) in a non-helical fashion between the head (2) and the leading end (4) for collecting scraps and does not criss-crosses with crests of the thread unit (5).