JPS6239014U

JPS6239014U -

Info

Publication number: JPS6239014U
Application number: JP13222985U
Authority: JP
Priority date: 1985-08-28
Filing date: 1985-08-28
Publication date: 1987-03-09

Description

[Brief explanation of the drawing]

第１図は本考案のタツピングねじの実施例を示
す正面図、第２図は同上のダイスの概略図、第３
図は同上の転造動作説明図、第４図は本考案のタ
ツピングねじの他の実施例の正面図、第５図は同
上のダイスの概略図、第６図は本考案のタツピン
グねじの更に他の実施例の正面図、第７図は従来
のタツピングねじの正面図、第８図は同上のダイ
スの概略図である。１……ねじ軸、２……尖部、３……ねじ山、４
……尖部ねじ山、５……ねじ棒本体。 Figure 1 is a front view showing an embodiment of the tapping screw of the present invention, Figure 2 is a schematic diagram of the same die, and Figure 3 is a schematic diagram of the same die.
Figure 4 is a front view of another embodiment of the tapping screw of the present invention, Figure 5 is a schematic diagram of the same die, and Figure 6 is a further illustration of the tapping screw of the present invention. FIG. 7 is a front view of another embodiment, FIG. 7 is a front view of a conventional tapping screw, and FIG. 8 is a schematic diagram of the same die. 1...Screw shaft, 2...Point, 3...Screw thread, 4
... Tip thread, 5 ... Threaded rod body.

Claims

[Scope of utility model registration request]

The lead angle of the thread screwed onto the tip of the screw shaft is made larger toward the tip of the tip so that the winding direction of the thread approaches the same direction as the axial direction of the screw shaft. A tapping screw is made up of a separate screw thread that is threaded onto the screw shaft body.