SU583777A3 - Nut fastenable on panel with hole - Google Patents

Description

The invention relates to mechanical engineering. Known is a nut attached to a panel with a hole, having a threaded hole and a notch into which the edge of the hole of the panel is 9-bent, while the side wall of the notch is made with undercut, its bottom is straight ij. The central part of this nut, where the rope is a threaded hole, protrudes over the end of the recess. However, the dimensions of the central part of the nut limit the size of the threaded hole, and a simple-shaped recess does not reliably hold the panel. Also known is a nut attached to a panel with a hole, having a threaded hole and a notch into which the edge of the panel I hole is bent. The side of the notch is made with an undercut and its bottom is stepped from two upper and lower ring-shaped parts,. parallel to each other, the perpendicular axis of the threaded bore and the connected intermediate part. This nut is the closest to the invention in its technical essence. However, the dimensions of its central part also limit the size of the axial threaded hole. The purpose of the invention is to increase the reliability of fastening. This goal is achieved by the fact that the recess of the nut is made in the form of an end strip, the lower part of the bottom of which is located at the level of the end face of the threaded hole. The intermediate part of the cavity bottom is made of a regular polygon, for example, a hexagon with cut off vertices, and in the cross section of an arcuate shape it has a transition inclined to the axis of the threaded hole to the bottom of the bottom. On (rig 1 is shown a nut, attached e {va to a panel with a hole, view cBSpxv: in Fig. 2 - section A - A,. Ny-Fi zG. 3; - nut and rivet tool / nor figure 4 - that Fig. 3 shows the nut after fastening it to the panel, transverse section. Nut 1 has an axial threaded recess 2 and a notch 3 open from the end 4 Lower part 5 of the notch bottom surrounds an axial threaded the opening, the upper part 6 of the bottom is located adjacent to the side wall 7, and the intermediate part 8 connects the first and second parts of the bottom of the recess.

The inclined section 9 of the lower part: part 5 of the bottom is located adjacent to the intermediate part 8, which ensures the development of the nut from the planting machine during its manufacture. Preferably, the side wall 7 is inclined inwardly and overlaps the upper part 6 of the bottom, thereby allowing the panel to be held after riveting. Part 5 of the bottom is located farther oi of the butt end -4 of the nut than the top-np part b of the bottom — this is how a tool is formed under the tool (see figure 2). The intermediate part 8 has a cross section g | p; i1 a very arcuate shape (L: M. Fi1.) And is made in the form of a regular polyhedron, concentrically distant, lying relatively axially open to form a part of reduced load. Vertices 1 About the polyhedron of the intermediate part yi; (; 4i,; HLi; (see fig. D. 1), with the aim of preventing (Eni hr the formation of stress cracking during the manufacture of the nut).

13 G1rsd1; complete side wall construction} and grooves and outer wall I I G.I.KI Keptidichnye ppil shishchigoniki, having the same K-tj form, as well as the humorous hour; c11, and.

l ijiJi: r 1MYKS and grooves is important -liifr-ioiiHC. CHA1) uzhnya wall 11 owing to Mfx-n / j-o-iTHi as a polyhedron and serve i for ;; a: a place; nor a nut with respect to ny jHcoHa. The panel has a shaped screwdriver .1-TIS for the primrose and the installation of the nut when implementing the riveting sloger.

The round rivet end 12 of the puanone 13 fits snugly into the recess formed by the bottom of the recess bottom and the intermediate part. In the multi-faceted part 14 of the punch, an axial cylindrical recess 15 is provided, which helps to reduce the pressure during the riveting process. During the punching process, the cylindrical through hole must be made in it. Here, the member passes through the punch or threaded nut and the cutting is removed through the punch.

Panel 16 sec. The opening 17 of the mustache is inserted between the nut and the punch (see FIG. 4).

Opening the end 12 of the punch interacts with the panel, 5 which causes the edge of the panel to defrost and enter the recess of the nut. In this case, it is pressed against the side wall and part of the bottom by the arcuate surface 19 of the punch. Horses 1 punch comes to the bottom of the bottom of the recess, extruding the edge 20 in sk./s

vertices of the intermediate part. The arc-shaped surface 19 and the part 14 of the uycuison deform the edge of the panel, go under the inclined side wall and are fixed in the recess. If metal gets into the dimple under the plug, it can lead to too high pressure and damage to the plug. However, this me-DjaeT implementation; the intermediate part in the form of a hexagon or MHOI OIPCInnik, which provides for the creation of areas of pressure reduction.

Claims (2)

1. A nut. Attached to a panel with a hole, having a threaded hole and a notch into which it bends: - the edge of the hole of the panel, while the sock is completely undercut and the bottom is stepped of two (upper and lower) ring-shaped parts parallel to each other, perpendicular to the axis of the threaded hole and connected by an intermediate part, characterized by ijo, in order to increase the reliability of fastening, the recess is made in the form of an end cavity, the bottom part of which is .i; to open 2. A nut according to claim 1, distinguished by the fact that the intermediate part of the bottom of the cavity is made in the form of a regular runner, for example a hexagon with cut tops, and in cross section is arcuate, and has a transition to the bottom of the threaded hole bottom. Sources of information taken into account in the examination of the application, 1. The US patent number 3464747, CL 151-41.73, 1972. 2. US patent number 3724520, kl.151-41.73, 3 i S7 ff 9 J HEY -U-i 2 Rig 2 2  / ////////// // //// L / t./v- J / / Shlou ////////// Л v