CN206320157U - The Anti-loosen stop nut radially locked - Google Patents

Abstract

Radially the Anti-loosen stop nut of locking, is combined by thick hexagonnut with hexagon thin nut.High nut right-hand member has one section of outer cone boss, and thin nut left end has one section of inner circle taper hole, and both tapers correspondence is consistent.Outer cone boss small end end face direction is uniformly arranged 28 slit blind slots, extends terminated after a segment length in the axial direction.Outer cone boss is divided at least two pieces internal thread arc-shaped voussoirs by adjacent two slit blind slots.The internal thread of thin nut right-hand member can make its left end internal conical surface compress internal thread arc-shaped voussoir elimination gap radially therebetween in the presence of bolt helicla flute, reach the purpose of Anti-loosen stop.When that need to dismantle, reversely backing out thin nut first can be such that its left end inner circle taper hole is separated with outer cone boss on high nut, then several piece internal thread arc-shaped voussoir resets under metallic elastic effect departs from closely sealed between bolt helicla flute, then reversely backs out high nut with spanner and can easily unload a whole set of nut.

Description

The Anti-loosen stop nut radially locked

Technical field

The utility model is related to a kind of Anti-loosen stop nut, and the Anti-loosen stop nut of particularly radial locking uses practicality New Anti-loosen stop nut remains to keep normal operating conditions in vibration frequently violent workplace, will not cause because The adverse consequences for loosening and causing, belongs to mechanical field.

Background technology

Screw thread is all be unable to do without since forefathers invent and apply threaded fastener, in the equipment of all trades and professions, facility tight The extensive use of firmware, it may be said that threaded fastener turns 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 used in violent occasion in various equipment, facility, past It is led to a disaster toward meeting because nut is released.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.It is widely used in the market and the elimination introduced in the document gap 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 have both at the same time simultaneously.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 one kind is simple in construction, Anti-loosen stop function-stable is 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 plays itself axial locking to standard thread fastener in fastening Under situation, and increase it function of radially locking, whole gaps when reaching elimination bolts and nuts work comprehensively reach complete The effect of Anti-loosen stop.

The utility model is combined by standard hex high nut with standard hex thin nut, and the right-hand member of thick hexagonnut has One section of outer cone boss, the left end of hexagon thin nut has one section of inner circle taper hole, and both tapers are corresponding, and one is combined into when using Body.One section of outer cone boss of thick hexagonnut right-hand member, its taper is between 5 °~30 °, and its axial length is same specification standard Between 1.5~2.5 times of thread pitch, and the small end end face direction of conical boss is uniformly arranged 2-8 bars and opened with boss small end Begin the slit blind slot extended along thick hexagonnut circular cone axis direction, and its length is 2-3 times of pitch length, its slit blind slot Width is between 0.5~3mm, its slit groove width gets the small value when the nominal diameter of nut is smaller, when the nominal diameter of nut Taken large values when larger, and descend insertion in radial directions.Its cone of one section of inner circle taper hole of another part hexagon thin nut left end Degree also between 5 °~30 °, and same specification hexagon thin nut inner circle taper hole taper should be with thick hexagonnut right-hand member boss Outer cone taper is corresponding to the same.And inner circle taper hole outside diameter size should be less than conical boss outside diameter chi on high nut Very little, inner circle taper hole end diameter size also should be less than conical boss end diameter size on high nut, and the purpose is to prevent taper Phenomenon is interfered during the extreme position of cooperation.In addition, the length of hexagon thin nut right-hand member internal thread is at least at one times of pitch More than.

Application method of the present utility model and on bolt install plain nut be as good as, thick hexagonnut is had cylindrical first Cone boss one is faced outwardly, and is screwed in hand on bolt, until the nut left end plane is developed with the accessory end face for needing to be connected on bolt Untill.Again with conventional spanner, thick hexagonnut is tightened on bolt, untill the pre-fastening moment of defined is reached.This Shi Zaiyong hands pick up hexagon thin nut, using inner circle taper hole one end inwardly, are also screwed on bolt, until the inner circle taper hole of its left end Fit, now tightened hexagon thin nut, due to six with conventional spanner again with the outer cone boss of thick hexagonnut right-hand member The taper of the taper of the outer cone boss of angle high nut right-hand member and hexagon thin nut left end inner circle taper hole is corresponding to the same, and six The flexible internal thread arc-shaped wedge of several piece is formed by the part that slit blind slot is split on the high nut right-hand member outer cone boss of angle Block is under the extruding of hexagon thin nut left end inner circle taper hole inwall, constantly voussoir wedging in the helicla flute of bolt, with pulling The moment of face of dynamic hexagon thin nut is bigger, then acts on several piece internal thread arc-shaped voussoir, the enclasping force of bolt helicla flute is got over Greatly, the radial clearance between thick hexagonnut right-hand member internal thread and bolt helicla flute thus can be thoroughly eliminated, at this moment at one's discretion The bolt and nut auxiliary connection, all without releasing easily, reaches the purpose of Anti-loosen stop under worst vibration environment.

When needing to remove the connection of the threaded connection pair, conventional common wrench still can use first reversely to back-out this practicality The hexagon thin nut of the Anti-loosen stop nut of new radial direction locking, the inner circle taper hole of its left end and the outer cone of thick hexagonnut are convex Taper between platform can easily depart from without being difficult to dismantle because of self-locking between selecting 5 °~30 °.Now, the thick spiral shell of hexagonal The several piece internal thread arc-shaped voussoir of female right-hand member resets under metallic elastic effect, and departs from from the helicla flute of bolt, at this moment Reversely exert oneself the outer-hexagonal part for inserting thick hexagonnut with conventional common wrench again, so that it may backed out easily until from spiral shell Unloaded in bolt.Mainly make useful to be to eliminate the radial clearance in screw thread pair due to of the present utility model, therefore the utility model is called The Anti-loosen stop nut radially locked.

Brief description of the drawings

Fig. 1 is the assembling schematic diagram that the Anti-loosen stop nut that the utility model is radially locked is used on bolt.

Fig. 2 is the structural representation of thick hexagonnut in the Anti-loosen stop nut that the utility model is radially locked.

Fig. 3 is the structural representation of hexagon thin nut in the Anti-loosen stop nut that the utility model is radially locked.

As shown in Figure 1：(1) it is standard hex bolts；(2) the six of the Anti-loosen stop nut radially locked for the utility model Angle high nut；(3) hexagon thin nut for the Anti-loosen stop nut radially locked for the utility model.Thick hexagonnut (2) right-hand member Outer cone boss it is corresponding with the inner circle taper hole of hexagon thin nut (3) left end its taper and be brought into close contact.

As shown in Figure 2：(21) it is the standard triangle internal thread of thick hexagonnut insertion, (22) are thick hexagonnut right-hand member The slit blind slot of at least more than two being uniformly arranged on outer cone boss, (23) is divided between adjacent two slit blind slots Into internal thread arc-shaped voussoir, (24) be outer cone boss.

As shown in Figure 3：(31) it is hexagon thin nut left end inner circle taper hole, (32) are the interior spiral shell of hexagon thin nut right-hand member insertion Line.

Embodiment

As shown in Figure 1, Figure 2, Figure 3 shows, it is provided with the outer cone boss (24) of its thick hexagonnut right-hand member of the present embodiment uniform The four slit blind slots (22) set, therefore four pieces of internal thread arc-shaped voussoirs are divided to form on the outer cone boss (24) (23)。

After the parts that need to be fastenedly connected are installed in standard hex bolts (1), thick hexagonnut (2) is had outer first I.e. diagram right side is screwed on bolt (1) outwardly at conical boss (24) end, until it fits with the parts end face in diagram, then is used Untill when common wrench is screwed to required mounting torque value.At this moment the axial gap between thick hexagonnut (2) and bolt (1) screw thread It has been eliminated.Then hexagon thin nut (3) being had into inner circle taper hole (31) end, i.e. diagram left side is screwed on bolt (1) inwardly, until The inner circle taper hole (31) of its left end is fitted with the outer cone boss (24) of thick hexagonnut (2) right-hand member, then is exerted oneself with common wrench The interior of its left end will be forced when tightening mobile in bolt (1) helicla flute of the internal thread (32) of hexagon thin nut (3) thereon Conical bore (31) constantly extrudes four pieces of internal thread arc-shaped voussoirs that thick hexagonnut (2) right-hand member is divided into by slit blind slot (22) Internal thread, the radial direction into bolt (1) helicla flute tightens up, then the footpath between thick hexagonnut (2) right-hand member and bolt (1) Also it is eliminated to gap, because whole gaps between thick hexagonnut (2) and bolt (1) are eliminated and are firmly locked, therefore The purpose that Anti-loosen stop is reached in the violent frequently occasion of vibration can be realized.

, only need to be reverse with the spanner commonly commonly used if dismantle the Anti-loosen stop nut that the utility model is radially locked First backing out hexagon thin nut (3) first makes the inner circle taper hole (31) of its left end and the outer cone boss of thick hexagonnut (2) right-hand member (24) separation easily can remove hexagon thin nut (3) from bolt (1).Now the four of thick hexagonnut (2) right-hand member Block internal thread arc-shaped voussoir (23) can restore to the original state in the presence of metallic elastic unclamps close between bolt (1) helicla flute Close, at this moment reversely firmly can very easily unload thick hexagonnut (2) with commonly conventional spanner again.

In summary：The Anti-loosen stop nut that the utility model is radially locked, its thick hexagonnut (2) is in working condition In, undertake whole fastening forces and eliminate the effect of its axial gap between bolt.And hexagon thin nut (3) then mainly undertakes and tightened up Thick hexagonnut (2) right-hand member outer cone boss (24) and the internal thread arc-shaped voussoir (23) of slit blind slot (22) formation, make it Eliminate the effect that the radial clearance between bolt (1) helicla flute realizes reliable Anti-loosen stop.

As high ferro, subway are in mondial popularization and extensive heavy bridge, the construction of engineering machinery, to screw thread The Anti-loosen stop of fastener requires more and more urgent.At present, at home important equipment, main or application Japan on facility, The patent fastener of the country such as U.S., practice and extension of the present utility model will defeat same kind of products at abroad to do credit to one's country.

Claims (3)

1. the radially Anti-loosen stop nut of locking, it is characterized in that combined with standard hex thin nut by standard hex high nut and Into the right-hand member of thick hexagonnut has one section of outer cone boss, and the left end of hexagon thin nut has one section of inner circle taper hole, both taper phases Correspondence is consistent, is combined into one when using.

2. the Anti-loosen stop nut of radial direction locking according to claim 1, it is characterized in that：Thick hexagonnut right-hand member is one section Outer cone boss, its taper between 5 ° to 30 °, its axial length for 1.5~2.5 times of same specification standard thread pitch it Between, and in terms of the small end end face of conical boss, 2-8 bars are uniformly arranged, since boss small end, along thick hexagonnut circular cone The slit blind slot of axis direction extension, its length is 2-3 times of pitch length, the width of its slit blind slot be 0.5~3mm it Between, and descend to be divided to form several piece on outer conical boss between insertion, adjacent two slit blind slots and have in radial directions The internal thread arc-shaped voussoir of elasticity.

3. the Anti-loosen stop nut of radial direction locking according to claim 1, it is characterized in that：One section of hexagon thin nut left end Its taper of inner circle taper hole is also between 5 ° -30 °, and the hexagon thin nut inner circle taper hole taper of same specification should be with thick hexagonnut The boss outer cone taper of right-hand member is corresponding to the same, and inner circle taper hole outside diameter size should be less than conical boss on high nut Outside diameter size, inner circle taper hole end diameter size also should be less than conical boss end diameter size on high nut, and will More than the size in the big footpath of internal thread, in addition, the length of hexagon thin nut right-hand member internal thread is at least at more than 1 times of pitch.