JPS61150512U

JPS61150512U -

Info

Publication number: JPS61150512U
Application number: JP3383185U
Authority: JP
Priority date: 1985-03-08
Filing date: 1985-03-08
Publication date: 1986-09-17
Also published as: JPH031610Y2

Description

[Brief explanation of the drawing]

第１図は一実施例としてのダブルナツトを示し
、イは半截断面図、ロは平面図。第２図は介挿体
の平面図。第３図は一実施例としてのナツトの緩
み防止機構の断面図。第４図は作用を説明するた
めの要部拡大断面図で、イは連接部の分断前、ロ
は分断後を示す。第５図は介挿体の他実施例の平
面図。第６図は他実施例の断面図で、イは連接部
の分断前、ロは分断後を示す。第７図及び第８図
は他実施例の要部拡大断面図。第９図及び第１０
図は他実施例の要部拡大断面図で、イは分断前、
ロは分断後をそれぞれ示す。第１１図は従来例の
断面図。１…上部ナツト体、２…下部ナツト体、４…連
接部、５…溝部、６…介挿体、９…ボルト。 FIG. 1 shows a double nut as an embodiment, in which A is a half-cut sectional view and B is a plan view. FIG. 2 is a plan view of the insert. FIG. 3 is a sectional view of a nut loosening prevention mechanism as an embodiment. FIG. 4 is an enlarged cross-sectional view of the main part for explaining the operation, in which A shows the connecting part before it is separated, and B shows it after it is separated. FIG. 5 is a plan view of another embodiment of the insert. FIG. 6 is a cross-sectional view of another embodiment, in which A shows the connecting portion before it is separated, and B shows it after it is separated. FIGS. 7 and 8 are enlarged sectional views of main parts of other embodiments. Figures 9 and 10
The figure is an enlarged cross-sectional view of the main part of another embodiment, and A is before separation;
B shows the results after division. FIG. 11 is a sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Upper nut body, 2... Lower nut body, 4... Connecting part, 5... Groove part, 6... Insert body, 9... Bolt.

Claims

[Claims for Utility Model Registration] 1. Two nut bodies 1 and 2 are integrally connected vertically via a connecting part 4 that can be separated by a preset tightening torque, and A groove 5 is formed between the nut bodies 1 and 2 on the axis side of the continuous portion 4, and a substantially ring-shaped insert 6 having an inner diameter larger than the outer diameter of the bolt 9 is disposed within the groove 5. Moreover, after the connecting portion 4 is separated, the insert 6 is pressed and deformed between the two nut bodies 1 and 2, and a part of the deformed insert 6 on the axis side becomes a bolt. A mechanism for preventing loosening of a nut, characterized in that the nut body is prevented from loosening by protruding toward the threaded portion 10 side of the nut body. 2. The nut loosening prevention mechanism according to claim 1, wherein the insert 6 is made of a stainless steel member having a substantially U-shaped cross section. 3. The nut loosening prevention mechanism according to claim 1, wherein the insert 6 is made of an elastic member.