Durable screw structure

The utility model relates to the technical field of screws, in particular to a durable screw structure which comprises a straight rod, an anti-falling thread is further arranged on the circumferentialouter wall of the straight rod, a circular groove is formed in the straight rod, a plurality of circ...

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Bibliographische Detailangaben
Hauptverfasser: ZENG BIAO, ZENG JIONG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model relates to the technical field of screws, in particular to a durable screw structure which comprises a straight rod, an anti-falling thread is further arranged on the circumferentialouter wall of the straight rod, a circular groove is formed in the straight rod, a plurality of circular holes are further formed in the circumferential outer wall of the straight rod, the circular holes are communicated with the circular groove, and a twisting handle is arranged at the top of the straight rod. A groove is formed in the center of the upper surface of the twisting handle, a crossgroove is formed in the center of the bottom of the groove, a connecting hole is formed in the center of the cross groove, a puncture head is arranged at the bottom of the straight rod, and puncture threads are arranged on the circumferential outer wall of the puncture head. According to the durable screw structure, the round holes are distributed between the gaps of the anti-falling threads at equal intervals, lubricating