CN206092662U - Elastic cone wedging formula locknut - Google Patents

Abstract

The utility model discloses - - - elastic cone wedging formula locknut, mainly form by the high nut of right -hand member area conical bore and left end outband cone boss's thin nut combination, open the blind groove that the other end was not opened in two at least one end of each equipartition of the both ends of thin nut, when using since the wedging of cone and the effect of tightening up in blind groove can eliminate its and bolt thread axle clearance and radial clearance within a definite time effectively and reach the utility model discloses - - - the effect of elastic cone wedging formula locknut's locking stopping. The utility model discloses - - - elastic cone wedging formula locknut uses the principle of plane wedging ingeniously and combines with blind groove elastic shrinkage principle among three -dimensional cone, simple structure, and locking stopping effect is reliable and stable, and the installation is convenient with the dismantlement, can extensively utilize in the various occasions that have strict locking requirement to threaded fastener, especially relaxs the occasion that has the special requirement in aircraft, car, high -speed railway etc. To the fastener.

Description

Elastic cone wedging type stop nut

Technical field

This utility model is related to a kind of new elastic cone wedging type stop nut, particularly by thread on bolt simultaneously By axially and radially wedging, prevent the nut of the present utility model for having fastened thereon from producing loosening, the phenomenon of retaining when vibrating.

Background technology

Since forefathers invent and using threaded fastener since, screw thread is all be unable to do without on the equipment of all trades and professions, facility tight The extensive application of firmware, it may be said that threaded fastener has become classic products, it is tens of from now on, or even in centuries all without Withdraw from the market and be eliminated.

But its is inherent to have the disadvantage, it is past used in particularly vibrating violent occasion in various equipment, facility Lead to a disaster because nut is released toward meeting.Trace it to its cause be threaded fastener screw bolt and nut with the use of when, its inside and outside spiral shell Tooth is in engagement, it is necessary to leave space.This result in nut on bolt it is in place tighten after, its gap is still present.And be somebody's turn to do Gap can be analyzed to axial gap and the class of radial clearance two.The elimination gap for being widely used in the market and introducing in document Product and method, mainly have flat shim, spring washer, double nut, the nut with nylon union thimble, inserted sheet metal nut and hexagonal Binding nut etc..But the axial gap being only capable of in utilization mostly between elimination standard nut and bolt thread or the one of radial clearance Kind, it is impossible to while having both at the same time.Once the vibration of place equipment, facility is frequently acutely, the function of Anti-loosen stop is just immediately lost. Current highway, in the case that high ferro motor-car is increasingly used widely, its Anti-loosen stop to threaded fastener requires to get over Come higher, in the urgent need to a kind of simple structure, Anti-loosen stop function-stable are reliable, and can operationally eliminate bolt spiral shell simultaneously The threaded fastener of axial gap and radial clearance is taking on this important task between female thread.

The content of the invention

Content of the present utility model is to provide a kind of stop nut of novelty, particularly can eliminate simultaneously between thread radially Gap and axial gap, wedging type anti-loosening locking makes to have fastened spiral shell of the present utility model on the bolt in advance on bolt thread Mother will not loosen the effect of simultaneously energy retaining.

This utility model --- elastic cone wedging type stop nut is by the high nut with inner circle taper hole and band outer cone The thin nut of boss is combined, and inner circle flare nut is to process one section of inner circle taper hole in the right-hand member of standard hex high nut, outward Conical nut is to process one section of outer cone boss in the left end of standard hex thin nut, both tapered segments its taper sizes Corresponding, it is open-minded that the conical boss and right-hand member of hexagon thin nut left end are respectively provided with the axial direction at least two one end, the other end The blind slot do not opened, the blind slot that left and right is outputed is uniformly distributed in the plane on the basis of each end face, and left and right two ends are along axle The blind slot interlaced arrangement of line distribution.The aperture of standard hex high nut right-hand member inner circle taper hole small end should be less than standard hex thin nut The diameter at left end outer cone boss small end circular cone position, and more than the size in the big footpath of female thread.In standard hex high nut right-hand member Conical bore is corresponding with the taper requirement of standard hex thin nut left end conical boss, and its cone angle is greater than 3 °, its purpose It is to exit difficulty to prevent generation self-locking during dismounting.In addition uniform blind slot its width in two ends is extremely on standard hex thin nut It is less more than 1mm, and up/down perforation, its objective is to prevent this utility model --- elastic cone wedging type stop nut is being answered When used time groove width is retracted to extreme position, still embraces incessantly bolt thread and do not reach the effect of Anti-loosen stop.

Thick hexagonnut is screwed into needs tightly when in use, first by this utility model --- elastic cone wedging type stop nut Solid bolt on, but band in one end of inner circle taper hole towards outer end, after being screwed up with a wrench, then by with the thin of conical boss Nut makes conical boss one end be introduced on bolt, until its projection section outer cone boss is contacted with high nut inner circle taper hole, Now thick, thin two nut is connected, due at first with usual manner eliminated when high nut is screwed into its thread with The axial gap of bolt thread, after the thin nut that is screwed into when continuing to turn with spanner again, it is uniform on the conical boss of its left end Blind slot will be tightened up in the presence of taper, then the female thread thread of thin nut conical section will be held tightly on the thread of bolt, Eliminate radial clearance therebetween.The hexagonal position of thin nut right-hand member is twisted by spanner must be tighter, then it eliminates the effect of radial clearance Fruit is better, and thick, thin two nut now of the present utility model has been connected in the presence of cone, and each takes elimination axle To the effect of gap and radial clearance, the reliable effect for preventing this utility model from releasing is served.Because cone is plane wedge The stereogenic of block, thereon open-blind groove the purpose of locking is reached by the way of radial contraction.Therefore this utility model is called Elastic cone wedging type stop nut.When this utility model elastic cone wedging type stop nut is dismantled, can be with conventional side Thin nut right-hand member outer-hexagonal position is first inserted in spanner, the tapered segment of then thin nut left end is reversely firmly turned by from thick spiral shell Separate in the conical bore of female right-hand member, blind slot thereon is gradually flicked reinstatement in the presence of elasticity, until thin nut quilt Pull down.At this moment the high nut being tightened reversely is pulled down with the conventional method of spanner again.

Description of the drawings

Fig. 1 is the assembling schematic diagram that this utility model elastic cone wedging type stop nut is used on standard bolt.

Fig. 2 is the high nut schematic diagram with inner circle taper hole in this utility model elastic cone wedging type stop nut.

Fig. 3 is the thin nut schematic diagram with outer cone boss in this utility model elastic cone wedging type stop nut.

Specific embodiment

As shown in Figure 1, Figure 2, Figure 3 shows, the high nut (1) with inner circle taper hole is screwed into first on bolt (2), until being tightened To required mounting torque numerical value.Axial gap is eliminated between the thread that now it is contacted with bolt (2), thereafter outside band Thin nut (3) boss one end of conical boss is screwed on bolt (2) until its left end conical boss is interior with high nut (1) right-hand member Conical bore is contacted.Now thin nut (3) can be turned under outer moment loading with spanner, on the outer cone boss of thin nut (3) its Uniform blind slot width is compressed, and will produce the effect radially tightened up, then the corresponding female thread thread of conical boss, quilt Hold tightly on the thread of bolt (2), until eliminating radial clearance therebetween.Thin nut (3) is screwed tighter, then in cone The effect of radial clearance is better between its elimination and bolt (2) thread in the presence of wedging.Now high nut (1) and thin nut (3) It is connected in the presence of tapered segment, and high nut (1) is responsible for eliminating and the axial gap between bolt (2) thread, it is thin Nut (3) is responsible for eliminating and the radial clearance between bolt (2) thread.The then combination of both can be completely achieved on a nut It is completely eliminated and all gaps between bolt (2), reaches the effect of Anti-loosen stop.If dismantling elasticity of the present utility model Circular cone wedging type stop nut, as long as reversely first turning the outer-hexagonal part of thin nut (3) right-hand member, its left end with conventional direction Outer cone boss can disengage contact with the inner circle taper hole of high nut (1) right-hand member, and blind slot uniform on outer cone boss Progressively can reset under elastic reaction, then can easily dismantle lower thin nut (3), finally can use conventional method to pull down high nut (1)。

This utility model --- elastic cone wedging type stop nut simple structure, Anti-loosen stop effect stability reliability.Can For all size, various occasions to bolt and nut using having where strict Anti-loosen stop functional requirement, easy installation and removal, The field for having a particular/special requirement locking to threaded fastener such as aircraft, high ferro, automobile can be especially widely used in.

Claims (4)

1. elastic cone wedging type stop nut, combined with the thin nut with outer cone boss by the high nut with inner circle taper hole and It is to process one section of inner circle taper hole in the right-hand member of standard hex high nut into, inner circle flare nut, cylindrical flare nut is in standard six The left end of angle thin nut processes one section of outer cone boss, and its taper size of both tapered segments is corresponding, hexagon thin nut It is open-minded that the conical boss and right-hand member outer-hexagonal one of left end is respectively provided with the axial direction at least two one end, what the other end was not opened Blind slot, the blind slot that left and right is outputed is uniformly distributed in the plane on the basis of each end face, and left and right two ends are distributed along axis Blind slot interlaced arrangement.

2. elastic cone wedging type stop nut according to claim 1, it is characterised in that：Standard hex high nut right-hand member The aperture of inner circle taper hole small end should be less than the diameter at standard hex thin nut left end outer cone boss small end circular cone position, and be more than The size in the big footpath of female thread.

3. elastic cone wedging type stop nut according to claim 1, it is characterised in that：Standard hex high nut right-hand member Inner circle taper hole is corresponding with the taper requirement of standard hex thin nut left end conical boss and its cone angle is more than 3 °.

4. elastic cone wedging type stop nut according to claim 1, it is characterised in that：Two on standard hex thin nut Uniform its width of blind slot in end is at least more than 1mm, and up/down perforation.