JPS638415U

JPS638415U -

Info

Publication number: JPS638415U
Application number: JP10181286U
Authority: JP
Priority date: 1986-07-02
Filing date: 1986-07-02
Publication date: 1988-01-20

Description

[Brief explanation of the drawing]

第１図は本案ボルトの分解正面図、第２図は仝
上ボルトを構成するボルト本体の縦断正面図、第
３図は仝上ボルト本体の底面図、第４図は本案ボ
ルトに使用する締付キヤツプの縦断正面図、第５
図は仝上締付キヤツプの他の実施例を示す縦断正
面図である。図中１０はボルト本体、１１は先端部、１２は
切溝、１３は支片、２０は締付キヤツプ、２１は
雌螺子、２２は突起、２３は係止部を示す。 Figure 1 is an exploded front view of the proposed bolt, Figure 2 is a longitudinal sectional front view of the bolt body that constitutes the upper bolt, Figure 3 is a bottom view of the upper bolt body, and Figure 4 is the tightening method used for the bolt of the present invention. Vertical front view of attached cap, No. 5
The figure is a longitudinal sectional front view showing another embodiment of the top tightening cap. In the figure, 10 is a bolt body, 11 is a tip, 12 is a cut groove, 13 is a branch piece, 20 is a tightening cap, 21 is a female screw, 22 is a protrusion, and 23 is a locking part.

Claims

[Scope of utility model registration request]

It has a bolt body with at least a male thread at its tip, and a bottomed tightening cap that is screwed into the tip of the bolt body, and the tip of the bolt body has a notch in the axial direction. A cut groove is provided to divide the tip into an appropriate number of branches, and the tightening cap is provided with a groove that protrudes into the cut groove when the tightening cap is screwed onto the tip of the bolt body. A protrusion that opens the branch in an enlarged manner as the screwing progresses, and a locking part that accommodates the branch that has been opened by this protrusion and that locks the branch so that it cannot be removed is provided. Tightening bolt.