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公开(公告)号：US10385903B2
公开(公告)日：2019-08-20
申请号：US15587436
申请日：2017-05-05
发明人： Qinfeng Yi , Huiying Wang , Xin'an Li
摘要： A metric self-tapping locking screw comprises a screw head which is connected to a thread locking body by a screw rod. The thread locking body and the self-tapping tip are provided with a screw thread on the surface. The self-tapping tip is arranged at the root of the thread locking body; the screw thread adopts the basic structure of the standard ordinary triangular thread. The flank angle back to the fastened surface is 15-20° and the flank angle of the screw thread facing the fastened surface is 30°. The metric self-tapping locking screw in the Invention make the installed parts to be fastened have higher axial clamping force and static loosing moment, which solves the attenuation problem of axial clamping force and static moment of fastened parts.
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公开(公告)号：US20180223889A1
公开(公告)日：2018-08-09
申请号：US15587436
申请日：2017-05-05
发明人： Qinfeng Yi , Huiying Wang , Xin'an Li
CPC分类号： F16B25/106 , B21F5/005 , B21H3/025 , B21H3/027 , B21K1/46 , F16B25/0015 , F16B25/0021 , F16B25/0047 , F16B25/0084 , F16B25/10
摘要： A metric self-tapping locking screw comprises a screw head which is connected to a thread locking body by a screw rod. The thread locking body and the self-tapping tip are provided with a screw thread on the surface. The self-tapping tip is arranged at the root of the thread locking body; the screw thread adopts the basic structure of the standard ordinary triangular thread. The flank angle back to the fastened surface is 15-20° and the flank angle of the screw thread facing the fastened surface is 30°. The metric self-tapping locking screw in the Invention make the installed parts to be fastened have higher axial clamping force and static loosing moment, which solves the attenuation problem of axial clamping force and static moment of fastened parts.
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