带母孔十二角法兰面头的半螺纹螺丝

Half-thread screw with female hole dodecagonal flange head

Abstract

The utility model discloses a half-thread screw with a female hole dodecagonal flange head. The half-thread screw comprises a screw body. The screw body has a rod part body and a tail end part body, which are integrally molded, wherein an external thread body with continuous outside recessed convex tooth-socket structure is axially fabricated at the head end of the rod part body, and the thread axial length of the external thread body is at most equal to two thirds of the length of the rod part body; an internal thread body with continuous inside recessed convex tooth-socket female hole structure is axially fabricated at the tail end of the screw body, and the length of the internal thread body is at least equal to the length of the tail end part body; and the screw body is a dodecagonal third structural body. An inwardly-recessed threaded hole is formed at the tail part and has novel structure and convenient fabrication, and the aperture of the inwardly-recessed threaded hole is moderate, so that the half-thread screw maintains the performance of the original screw and is added with the novel rear-part output connection mode without affecting the structural strength of the original screw. The screw thread of the threaded hole is processed in different specifications so as to meet the requirements for different connection modes, for example, metric screw thread, inch screw thread, U.S. standard screw thread and the like.
本实用新型公开了带母孔十二角法兰面头的半螺纹螺丝,包括螺丝本体,该螺丝本体具有一体成型的杆部体和尾端部体,杆部体头端径向制有连续的外凹凸齿槽结构的外螺纹体,并且该外螺纹体的螺纹轴向长度至多等于杆部体长度的三分之二;螺丝本体尾端轴向制有连续的内凹凸齿槽母孔结构的内螺纹体,并且该内螺纹体的长度至少等于尾端部体的长度值,所述的螺丝本体为十二角形状体的第三结构体;采用在尾部制有内凹的螺纹孔,其结构新颖,制作便捷;内凹的螺纹孔其孔径适中,在保持原螺丝体性能的同时,增加了新的后部输出连接方式,且也不会影响原螺丝体的结构强度;将该螺纹孔制成不同规格的螺纹方式,进而可以满足不同的连接方式,如公制螺纹、英制螺纹、美制螺纹等。

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