CN206190708U - Threaded fastener companion - Google Patents

Abstract

The utility model provides a regular hexagon, but its left end has one section internal cone hole, and the right -hand member also is the cloudy nut of standard triangle -shaped internal screw thread and constitutes that threaded fastener companion is regular hexagon by the periphery left end, and the right -hand member is outer cone boss, and positive nut and another outer fringe that the hole has a perfect understanding for standard triangle -shaped internal thread are same specification. The outer cone boss's of this sun nut right -hand member tapering is corresponding with the tapering in cloudy nut left end internal cone hole. The sun nut is at outer cone boss, and is at least along the blind groove of narrow slit of positive nut the central axis orientation extension more than one along tip terminal surface evenly distributed, to a regular hexagon side end face also have one section apart from the time stop. As standard nut according to after standardizing the requirement and being screwed up on standard bolt, the utility model discloses a sun nut is at first tightened, and the terminal surface pastes tightly outside standard nut, and cone boss lies in the outside, has internal cone hole one side to twist on cloudy nut again, makes the outer cone boss contact of its internal cone hole and positive nut, continues to pull the purpose that cloudy nut just can reach the locking stopping of standard nut.

Description

Threaded fastener companion

Technical field

The utility model is related to a kind of fastener companion --- particularly a kind of threaded fastener companion, it is tight with standard Gu nut screw connection is used, standard clamp nut can be increased and keep normal work in the frequently violent occasion of vibration, prevent from loosening Function, belong to mechanical field.

Background technology

Screw thread is all be unable to do without since forefathers invent and apply threaded fastener, on the equipment of all trades and professions, facility tight The extensive use of firmware, it may be said that threaded fastener has turned into 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 particularly vibrates and use in violent occasion in various equipment, facility, past Be led 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 the 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 being introduced 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 one of the axial gap or radial clearance for being only capable of eliminating in utilization mostly between standard nut and bolt thread Kind, it is impossible to while having both at the same time.Once the vibration of place equipment, facility frequently acutely, just immediately loses the function of Anti-loosen stop. Current highway, in the case that high ferro motor-car is increasingly used widely, its Anti-loosen stop requirement to threaded fastener is got 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 takes on this important task between female thread.

The content of the invention

Content of the present utility model is to provide a kind of nut anti-looseness device --- threaded fastener companion of novelty, its feature It is to be supported the use with protected standard nut with it, its effect is to hinder protected standard nut as a face fire wall It is towering motionless in frequently violent operating mode, reach the purpose of Anti-loosen stop.

The utility model be by profile left end be regular hexagon, right-hand member be outer cone boss composition positive nut be with outer rim Same specification regular hexagon, but its left end has one section of inner circle taper hole, and right-hand member is also for the cloudy nut of standard triangle is constituted.Positive nut is right Hold the taper of conical boss corresponding with the taper of the inner circle taper hole of cloudy nut left end, and both are in the extreme position for coordinating, The small end end diameter of positive nut outer cone boss is greater than the diameter of cloudy nut inner circle taper hole small end, and positive nut cone The size at the big end of boss should be greater than the diameter at the cloudy big end of nut left end inner circle taper hole.Positive nut conical boss in end face direction, It is even to set more than at least one since conical boss small end, along the narrow slit blind slot that positive nut central axis direction extends, away from Terminate when also having a segment distance from positive nut left end regular hexagon end face outside.It is upper and lower that every narrow slit blind slot both passes through internal thread hole Insertion.Be divided at least more than one section of arc-shaped internal thread voussoir between adjacent two slit blind slots, each voussoir left end with Regular hexagon body is connected, the function with elastic reset.Positive nut and the respective outer hex size of cloudy nut, pitch, tooth Shape, total length meet the above-mentioned parameter of the nut that the common thin nut of same specification national standard specifies.The periphery of cloudy nut is whole The regular hexagon with positive nut same specification is in individual length, one section of inner circle taper hole of its left end, its taper is cylindrical with positive nut The taper for boring boss is corresponding, and the conical bore outside diameter should be less than positive nut conical boss outside diameter, and end diameter should be small In positive nut conical boss end diameter, the tooth number of its right-hand member internal thread is at least more than 1 tooth.

After the plain nut of standard is tightened on bolt by code requirement, first outside positive nut of the present utility model Hold as regular hexagon inwardly, outer end is tightened for the side of conical boss one towards external application common wrench, until positive nut outer end is positive six side Untill shape end face is adjacent to the end face of the protected standard plain nut tightened.At this moment cloudy nut there is into inner circle taper hole one again End inwardly, is also screwed on bolt with common wrench, until the interior circular hole of cloudy nut is contacted with the outer cone boss of positive nut.At this moment The regular hexagon periphery of cloudy nut is firmly pulled again, due to being evenly arranged in the axial direction at least on the conical boss of positive nut One or more narrow slit blind slot, at this moment continues to be wrenched cloudy nut its inner circle taper hole, will oppress conical boss adjacent two on positive nut The female thread of the conical boss of bar narrow slit blind slot segmentation into a section arc-shaped internal thread voussoir, by wedging bolt spiral shell In spin slot, the radial clearance between the internal thread thread and bolt helicla flute of arc-shaped internal thread voussoir on positive nut is eliminated.By In the thread of the utility model yin, yang nut be the triangle thread of fastening, and its pitch, tooth form with protected Nut, bolt tooth form it is consistent, therefore axial gap therebetween is also eliminated while radial clearance is eliminated.At this moment by cloudy nut Twist must be tighter, will must be tighter with the spiral channel band of bolt the arc-shaped internal thread voussoir in positive nut, allow for this practicality It is new to stop loosening of the standard nut in high vibration and retreat as same stifled fire wall, reach Anti-loosen stop Purpose.

When dismantling standard nut shown in the utility model, cloudy nut is reversely pulled with common wrench first, cloudy nut is left The inner circle taper hole at end will be progressively disengaged and coordinated with the tapered segment of positive nut outer cone boss, until disengaging bolt is backed out, At this moment the multi-section circular arc shape internal thread voussoir split by narrow slit blind slot on positive nut in the presence of metallic elastic, in its arc-shaped Threaded wedge is unclamped in bolt helicla flute, returns to reset condition, outside the regular hexagon at this moment continuing reversely pull positive nut Week, so that it may easily taken out from bolt, then when reversely turning standard nut with common wrench, so that it may reach dismounting or overhaul it The purpose of the part being clamped on bolt.Because the utility model only increases locking functions to standard nut, it is main that it is fastened Function is still provided by protected standard nut, therefore the utility model is called threaded fastener companion.

Brief description of the drawings

Fig. 1 is the assembling schematic diagram that the utility model threaded fastener companion uses on standard bolt nut.

Fig. 2 is the profile of the structural representation of the utility model threaded fastener companion's middle-jiao yang, function of the spleen and stomach nut.

Fig. 3 is the profile of the structural representation of cloudy nut in the utility model threaded fastener companion.

Specific embodiment

As shown in Figure 1, Figure 2,1. it is standard bolt shown in Fig. 3 schematic diagrames, is 2. standard nut, is 3. sun of the present utility model Nut, the positive nut outer cone boss of present embodiment is provided with four slit blind slots, that is, 3. left end is connected to form positive nut Four arcses shape internal thread voussoir on regular hexagon body.3. left end endoporus is provided with a sector hole footpath more than interior spiral shell to the positive nut The stepped hole of the big footpath size of line, is compressing or is unclamping bullet when resetting its purpose is to increase each arc-shaped internal thread voussoir Property.4. it is cloudy nut, its left end inner circle taper hole can constantly tighten up four sections on positive nut (3) when right-hand member internal thread forward direction is pulled Arc-shaped internal thread voussoir is constantly compacted, all gaps during it is completely eliminated with bolt (1) helicla flute.

As shown in figure 1, after standard nut (2) is screwed into the on bolt (1) by code requirement, by positive nut (3) profile For regular hexagon one end inwardly, conical boss one end outwardly, until the outer face for being screwed to regular hexagon end face and standard nut is pasted It is flat, at this moment the outer face that positive nut is wrenched with standard nut (2) on the helicla flute of bolt (1) is adjacent to common wrench again. Cloudy nut (4) is picked up again, makes have conical bore one end inwardly, be screwed on the helicla flute of bolt (1), until the inner circle of cloudy nut (4) Taper hole and the outer cone boss conical surface contact of positive nut (3), are at this moment wrenched cloudy nut (4) with common wrench again, will be continuous The four arcses shape continuous banding of internal thread voussoir is in the helicla flute of bolt (1) on the positive nut (3) of compressing, because fastener threads Triangle thread is, therefore while its radial clearance is eliminated, also eliminates axial gap therebetween.At this moment positive nut (3) it is combined into one with cloudy nut (4), as a wall, the retrogressing of the standard nut (2) fastened in obstruction bolt (1), The purpose of Anti-loosen stop is reached.When standard nut to be dismantled (2), cloudy nut (4) outer rim is inserted with common wrench first Regular hexagon, easily makes to be taken off in the inner circle taper hole of its left end and the outer cone boss of positive nut (3) right-hand member by reversely turning Separation is opened, until cloudy nut (4) is removed from standard bolt (1) first.At this moment positive nut (3) outer cone boss formed four Section arc-shaped internal thread voussoir restores to the original state in the presence of elasticity, is at this moment inserted on positive nut (3) just with common wrench again Hexagon outer rim, easily unloads by reversely firmly turning from bolt (1).At this moment subscript can easily be unloaded with common wrench Quasi- nut (2).

After effect of the present utility model is yin, yang nut screw connection, the several sections of wedgings of arc-shaped internal thread voussoir internally Under effect, the stifled fire wall of composition one is the same, prevents the effect of protected standard nut Anti-loosen stop.The fastening of threaded fastener Function must mainly be undertaken by standard nut (2).The utility model is supported the use with standard nut, and anti-loosing effect is outstanding, therefore is claimed Be threaded fastener companion.

With high ferro motor-car, locking requirement of the dither such as carplane to threaded fastener is more and more urgent, this reality To thoroughly be solved to be born 200 for many years from threaded fastener with the appearance of Novel threaded fastener companion, headachy spiral shell The locking problem of line fastener, the new product for inventing Chinese is enjoyed great prestige at home and abroad.

Claims (4)

1. a kind of threaded fastener companion, is regular hexagon by periphery left end, and right-hand member is outer cone boss, and endoporus is standard triangle The positive nut of shape internal thread insertion is same specification regular hexagon with another outer rim, but its left end has one section of inner circle taper hole, right-hand member For the cloudy nut of standard triangle internal thread is constituted.

2. a kind of threaded fastener companion according to claim 1, it is characterized in that：The taper of positive nut right-hand member conical boss Taper with the inner circle taper hole of cloudy nut left end is corresponding, and both are in the extreme position for coordinating, positive nut outer cone boss Small end end diameter be greater than the diameter of cloudy nut inner circle taper hole small end, the diameter at the positive big end of nut cone boss should be greater than The diameter at the cloudy big end of nut left end inner circle taper hole；The whole endoporus of internal thread insertion of positive nut, but it has one section to be more than in left end The stepped hole in the big footpath of the internal thread.

3. a kind of threaded fastener companion according to claim 1, it is characterized in that：Positive nut conical boss is in small end end face Direction is uniformly arranged more than at least one, and the narrow slit along the extension of positive nut central axis direction since conical boss small end is blind Groove, terminates when the positive nut left end regular hexagon end face outside of distance also has a segment distance, and every narrow slit blind slot both passes through interior spiral shell It is divided at least more than one section of arc-shaped internal thread voussoir, each voussoir between pit up/down perforation, adjacent two narrow slit blind slots Left end is connected with regular hexagon body, the function with elastic reset.

4. a kind of threaded fastener companion according to claim 1, it is characterized in that：The total length of cloudy nut meets national mark The nut length that accurate common thin nut specifies, its periphery is regular hexagon over the entire length, and its left end has one section of female cone Hole, its taper is corresponding with the taper of positive nut outer cone boss, and it is convex that the conical bore outside diameter should be less than positive nut cone The diameter at the big end of platform, end diameter should be less than the diameter of positive nut conical boss small end, and the tooth number of its right-hand member internal thread is at least 1 It is more than tooth.