DE624273C - Screw locking - Google Patents

Description

As Stihraubensicherungen hiochf edernde corrugated Fiederringe b are ekannt that provide when tightening two spring branches, characterized ¹ in that first flat, long crimp with relatively soft suit and then short dilatations with hard suit come into effect. The various corrugations are either arranged alternately next to one another in the ring, or the long corrugations are overlaid by short corrugations.

The present invention relates to spring washers with a two-branch suspension characteristic; however, the same is not achieved by the interaction of long and short corrugations, but by that the simple corrugations of a ring with a relatively soft suit flat stretched and that then the ring contrary to the original corrugation shape with hard

ao suit waving. The latter is achieved by arranging suitable elevations, e.g. B. Bucking, teething or ribs, on the upper and lower apices of the arches.

It is known in the case of flat washers to have such elevations on both sides and to be arranged alternately offset from one another, creating a wave-like appearance when tensing Twisting of the originally flat rings is achieved. Deliver such rings but again only a steady spring branch.

The subject of the invention is characterized by the Compared to acquaintances in its effect by the fact that by the arrangement of the elevations on the apex of the bulge and below the ends of the primary bulge of the Ring beyond the flattening (first spring branch) to the opposite secondary corrugation is twisted (second spring branch).

Screw connections produced with such rings have excellent Resistant to vibration even after long and heavy use.

The healing drawings show the subject matter of the invention in three examples Embodiments. It shows:

Fig. Ι to 4 the first embodiment, in fact

Fig. Ι the view, Fig. 2 the top view,

Fig. 3 the section along line AB of Fig. 2,

Fig. 4 the section along line CD ¹ of Fig. 2,

Fig. 5 the view of the tensioned and twisted by a screw connection Spring washer,

Fig. 6 and 7 plan and view of a second embodiment,

Figs. 8 and 9 plan and view of a third embodiment.

In the first example (fig. 1 to 4) the ring «is arched horizontally (fig. 1). Teeth sit on the apex of the arches, while humps are provided under the ends of the arches. When tightening a screw connection (Fig. 5)

62427B

the ring, which is expediently made of resilient steel, is first flattened. When the nut is tightened further, the ring is twisted due to the crosswise offset of the bosses and teeth pairs, contrary to the original arching shapes (cf. - Fig. 1 and Fig. 5). The contact pressure increases towards the end of the deflection of the Rin gesa extremely, and it is achieved by the more or less strong penetration of the bosses or teeth into the base and nut, an excellent protection of the screw connection against subsequent unscrewing.

In the example according to Fig. 6 and 7, the ring is four times on the top and bottom radially arched, i.e. the imaginary axes of the arch point in the direction of the radii of the ring to its center. The roof-shaped ribs shown as an example / sit! here on the vertices of the upper or lower. Arch. When tensing the screw connection is this ring in a similar way, as described above, first stretched flat 'and then as a result of the ribs / contrary to its original Wölbujigsform twisted undulating.

In Fig. 8 and 9 'is a triple radially-Ge "bulging ring illustrated. -This g are on the top of hump crests on the buckle attached, imagining on the underside of ribs' are # provided at the ends of the curvature arc. Also when clamping this ring, the described effect, flat clamping and opposite bending, is achieved. "." ■

The ribs, teeth, humps or the like are either molded onto the rings, e.g. B. in the die -here- (Fig. 7, part /), or they are stamped from a previously a smooth ring (e.g. Fig. 8, part® or Fig. 3, parts). With the embossed Increases still have the beneficial effect that when tightened Screw connections and later extremely high ■ load of the same, z. B. by impacts, the parts characterized by this take up this load by, albeit to a small extent Dimensions, flexible springs and thus avoid tearing out the screw threads.

In Fig. 2 and 8 the humps are elongated bridges following the curvature of the ring shown. However, the same can also be used, especially in the case of small rings with circular ones Base be designed as simple spherical sections.

The rings 0: do not have to be round according to their ■ shape, they can be depending on yours Purpose of use all required shapes, e.g. triangular, square and polygonal, oval etc., own.

"Which forms of elevations are used in each individual case - whether round humps or angular teeth, etc., depends on the respective circumstances. Exist z. B. Base and nut made of soft material, light metal, brass or the like, so you will Prefer round bosses or ribs with rounded edges, as this is the material is spared and the nut again when the screw connection is loosened is usable. In the case of resistant material and where there is particularly strong tension because the screw connection is required, sharp-edged teeth are useful or ribs, to use.

Claims (1)

Claim: Corrugated resilient washer with pressed bosses, teeth or ribs, which are alternately offset from one another on the top and bottom of the ring disc and as a high-tension feather ring provides two spring branches when tightening, characterized in that the disc to the known horizontal or radial Corrugation also has teeth (e) on the arching arch and offset crosswise to this boss (e) which, after the first flattening of the disc, cause a twist against the arching. 1 sheet of drawings