This utility model belongs to the field of screw structure technology and relates to an adjustable and non loosening screw installation structure and installation nut.
1. Background technology:
With the development of the power electronics industry, the degree of product modularization is increasing. In existing technology, the installation and fixation of modules are generally connected to the cabinet through mounting plates using screws; In order to prevent the screws from falling off during module disassembly and assembly, loose screws 1 were used, and the rivet nut was a circular mounting nut 2. The installation structure of the loose screws is shown in Figure 1-2. Due to installation errors between the mounting holes on the cabinet and the loose screws 1 on module mounting plate 3, it is common for modules to be difficult to install.
2. Technical implementation elements:
In order to solve the technical problem of installation errors and difficulty in the existing screw installation structure, the present utility model provides an adjustable and non loosening screw installation structure and installation nut.
3. The technical solution of this utility model is:
An adjustable installation structure for a non loosening screw, comprising a non loosening screw 11 and an installation nut 22. The rod portion of the non loosening screw 11 comprises a polished rod section and a threaded section, wherein the polished rod section is set near the head of the non loosening screw, and the threaded section is set near the tail of the non loosening screw. The special feature is that:
The inner hole of the mounting nut 22 includes a first superior arc hole and a polished rod through hole connected to it. The first superior arc hole is provided with threads, and the width of the polished rod through hole is smaller than the major diameter of the threads in the first superior arc hole and larger than the diameter of the polished rod segment of the non loosening screw 11.
Furthermore, for the convenience of processing, the light rod through-hole comprises a rectangular hole connected to the first superior arc hole and a second superior arc hole located at the other end of the rectangular hole. The second superior arc hole is a light hole, and the first and second superior arc holes are symmetrical about the rectangular hole. The aperture of the second superior arc hole is the same as that of the first superior arc hole before threading.
Furthermore, for ease of installation, the light rod through-hole comprises a rectangular hole connected to a first superior arc hole, and a second superior arc hole is provided at the other end of the rectangular hole. The first and second superior arc holes are symmetrical about the rectangular hole, and threads are also provided inside the second superior arc hole. When installing screws, they can also be screwed in through the second optimal arc hole.
Furthermore, to ensure consistent wall thickness of the installed nuts and meet the requirements of structural strength. The shape of the installation nut 22 is the same as the shape of the inner hole.
4. The installation nut of the non loosening screw provided by this utility model is special in that:
The inner hole of the mounting nut 22 includes a first superior arc hole connected to it and a polished rod through hole. The first superior arc hole is provided with threads, and the width of the polished rod through hole is smaller than the major diameter of the thread inside the first superior arc hole and larger than the diameter of the polished rod segment of the loosening and non loosening screw 11 used in conjunction with it.
Furthermore, the light rod through-hole comprises a rectangular hole connected to the first optimal arc hole and a second optimal arc hole located at the other end of the rectangular hole. The second optimal arc hole is a light hole, and the first and second optimal arc holes are symmetrical about the rectangular hole. The aperture of the second optimal arc hole is the same as the aperture before the first optimal arc hole is threaded.
Furthermore, the light rod through-hole comprises a rectangular hole connected to a first superior arc hole, wherein the other end of the rectangular hole is provided with a second superior arc hole, the first and second superior arc holes are symmetrical about the rectangular hole, and threads are also provided inside the second superior arc hole. When installing screws, they can also be screwed in through the second optimal arc hole.
Furthermore, the shape of the mounting nut 22 is the same as the shape of the inner hole.
5. Compared with existing technologies, the advantages of this utility model are:
(1) This utility model has an adjustable and non loosening screw installation structure, which is convenient to use and realizes the rapid installation of modules. When the installation threaded holes on the cabinet cannot be installed due to positional deviation with the non loosening screws, the adjustable position function of the non loosening screws in the module can be used to overcome this.
(2) This utility model has an adjustable and non loosening screw installation structure, which is simple in structure and easy to implement.