SU45873A1 - Washer to prevent self-loosening of nuts - Google Patents

Description

The invention aims to provide a simple and cheap in its manufacture of a washer, reliably preventing self-loosening of the nuts. To achieve this, the proposed washer combines two devices, one of which serves as an elastic or elastic backing for the nut, and the other with protruding spring teeth, as a predominantly stopper to prevent the washer from rotating and the nut.

In FIG. 1 depicts the view of the plate from above; FIG. 2 is a front view of it; FIG. 3-enlarged section through 3-3 on |) u. one; FIG. 4-magnified view of the washer; Fig, 5 is a top view of a modified form of the washer; FIG. 6 is an enlarged section through 6-b in FIG. five; FIG. 7 is an enlarged section through 7-7 in FIG. five; FIG. 8 is a top view of the second modification of the puck; FIG. 9 is an enlarged section through 9-9 in FIG. eight; FIG. 10 is a top view of the third modification of the puck; FIG. 11 is an enlarged sectional view of FIG. 10 and FIG. 12 is an enlarged section through / 2- 72 in FIG. ten.

FIG. 1-4 shows the washer 75 with an outer rim 76 and an inner rim J8, supplied (298)

the spring-loaded tabs 77 formed by separating the material of the crown J6 by the cuts 79 and the cuts from each other 27.

To manufacture the washer, first of all, stamp the blank from a sheet of material capable of taking hardening, then 7P and 27 cuts are made. After this, the washer is placed in the stamp, giving the tongs 77 an arched or angular shape; at the same time, the wavy parts of the rim 76 are also formed. As a result of the simultaneous formation of waves and tabs 77, the latter undergo an angular shift and enter each other. The ends of each pair of tabs 77 protrude axially over the undulating portions of the rim 76 to engage with the metal of the nut and the part to which the latter is attracted. When the nut fits tightly on the wavy part of the crown J6 of the edge 25 of the tabs 77, the tabs 75 penetrate into the metal of the nut 22 and part 23.

The angle formed by the edge of the tongue with the bottom surface of the nut will be blunt. 3 the direction of tightening the nut, allowing the metal to slide along the tabs. The tightening time. The front side of the tongue is located approximately at a right angle to the surface of the nut.

and counteracts its movement in the opposite direction. This ensures reliable locking to prevent the nut from loosening during vibrations. FIG. 1, 5, 8, the puck is shown with only four tabs, but there can be any number of them.

FIG. 5, b, and 7 show a modified form of the washer, in which the waves of the crown 16 are replaced by protrusions 26 knocked into interleaving from opposite sides in the outer elastic crown 27 of the washer 28. The protrusions 26 assume the pressure of the nut. The formation of protrusions 26 causes internal movements in the metal, sufficient for the teeth to overlap one another.

FIG. 8 and 9, another embodiment of the washer 29 is shown, which is also provided with overlapping tabs / 7, but the outer elastic core of which is made stepwise. The protrusions 31 are formed by setting the metal at a right angle in opposite directions, whereby flat surfaces 32 are obtained, which come into contact with the surfaces of the nut 22 and the part 23.

In the embodiment of the nut shown in FIG. 10, P and 12, the locking teeth 33 are located on the outer rim of the washer. These washers are knocked out of the sheet blanks and during knockout or immediately after it, the material is provided with slots 34. Teeth protruding in opposite directions (Fig. 11) are given the desired shape simultaneously with the formation of crown waves 16 on the inside of the plate.

FIG. 3 and b show two types of tabs. The tongues in FIG. 3 are arcuate. The tongues in FIG. b have an angular shape. With the various washers shown, tongues can be used -one of one type or another.

The subject matter of the invention.

Claims (5)

1. A washer to prevent the nuts from self-unscrewing, characterized in that it combines two devices — the first formed by an outer (Fig. 1, 2, 4, 5, 7, 8) or inner (Fig. 10) crown and the elastic gasket under the nut and the second formed by the inner (Fig. 1, 2, 4, 5, 7, 8) or outer (Fig. 10) crown and representing predominantly a stopper, to prevent the washer and nut from turning, device. 2. The form of the washer according to claim, characterized in that, to form an elastic device, the outer rim 16 (Figs. 1, 4, b) is made wavy, thereby giving some shrinkage to the material of the washer, due to which in the inner locking rim / 6 washers, with springs with short tongues / 7, formed by slots J9, 2 /, these tabs, bent in opposite directions, are made with protruding edges, one behind the other. 3. The form of execution of the puff at paragraphs. 1 and 2, characterized in that the outer elastic crown 27 (FIGS. 5 and 7) is made instead of wavy, with protrusions 2 (5, interleaved on opposite sides. 4. The form of the execution of paragraphs 1-3, characterized in that the outer elastic crown is made stepped (Fig. 8-9). 5. The form of the washer according to Claim. 1, characterized in that its inner elastic crown is made wavy (Fig. 10-12), and the outer one with slots 34 forming protruding bent away in opposite directions and overlapping each other stop teeth 33. to patent Insev S. Easy. E. and D. Stellin № Connel. D. Sammut 45873 2 f., 2 and 11 1. Figig / 5