CN2434471Y

CN2434471Y - Integrated anti-loose antitheft nut

Info

Publication number: CN2434471Y
Application number: CN 00207709
Authority: CN
Inventors: 刘永熙
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-05
Filing date: 2000-04-05
Publication date: 2001-06-13
Anticipated expiration: 2010-04-05

Abstract

The utility model relates to an integral anti-loosing and anti-theft screw cap which is formed by assembling a screw cap, steel balls, shims, connecting rings and a temporary tube plug, wherein a group of semi-crescent notches with inclined planes are interrupted axially and are arranged on a screw opening of the clamping surface of the screw cap with a flange, and the steel balls are placed in the deepest positions of the notches. The surrounding parts of the outer edges are provided with a group of shims of step notches, which are arranged on the clamping surface of the screw cap; the surrounding parts of the outer edge is provided with a group of connecting rings of winglets, which are sheathed and abutted under the flange of the screw cap, and the notch steps are buckled by the winglets; the temporary tube plug with elasticity is pressed and sheathed in a screw hole of the screw cap to form integration. The utility model has anti-loosing and anti-theft functions, and can be particularly used for railways, iron towers and bridges.

Description

Integrated type anti-loose anti-theft nut

The utility model is that a kind of can work under vibrational state prevents that nature is loosening, and can prevent under particular environment that the people from being a kind of special fastening nut of (stolen) of getting loose.

The utility model be at " axial lock compact form anti-loose anti-theft nut " (patent No.: 91224563.8, the patentee: two shortcomings Liu Yongxi): 1. nut, steel ball, pad are dispersed state, inconvenience is installed; 2. the nut coupling mechanism force is to pass to pad by steel ball, and bearing area is few, pressure is big, nut and pad damage easily, and a kind of new structure of designing.

The purpose of this utility model provides a kind of integrated type anti-loose anti-theft nut with removable locking and non-disconnectable antitheft two kinds of functions.

The purpose of this utility model is achieved in that

Integrated type anti-loose anti-theft nut constitutes an integral body by nut, steel ball, pad, connecting ring and interim pipe close.Having on the seal face of nut of flange has axially to be interrupted a semilune inclined-plane breach, and steel ball is placed in the bosom of breach, and endoporus is placed on the seal face of nut greater than the pad of nut major diameter of thread.Inner edge is greater than the connecting ring of nut catercorner length, and cover is by below the nut flange, and outer perimeter has one group of winglet, and with the past pad of peripheral winglet button.External diameter more than or equal to the interim pipe close gland of nut internal diameter in the screw of nut.

One group on the nut compressing face screw socket axially is interrupted semilune inclined-plane breach, is half moon in horizontal projection; In that a gradient is axially arranged is γ, and a lift angle α greater than 2 times of nut lead angle β is arranged in the horizontal direction; The maximum depth of breach is a bit larger tham the diameter of steel ball.

For non-dismountable that is be used for antitheft integrated type nut, the outer rim of its pad is greater than the flange outer diameter of nut, and the rank breach of organizing a performance on the outer rim; The interior public circle of contact of step breach is more than or equal to the nut flange diameter.

For detachable that is be used for locking integrated type nut, its pad is except that outer rim is identical with non-dismountable integrated type nut, also have on its inner rim one group with the nut screw socket on the corresponding inclined convex thorn of interruption half moon inclined-plane breach, the straight wall of inclined convex thorn is near the innermost steel ball of nut interruption semilune inclined-plane breach.

Cover leans against the connecting ring below the nut flange, and one group of winglet on its outer perimeter is buckled in pad organizing a performance on the breach step of rank correspondingly.

Gland is in the interim pipe close of nut screw mouth, and its material is to have certain flexible nonmetallic material.

The utility model is for ease of installing, nut, steel ball, pad, connecting ring and interim pipe close have been made an integral body, and the seal face that can guarantee nut directly compresses with pad and the transmission of not leaning on steel ball pressure entirely, so pressure-bearing surface is big, pressure is little, has reduced the damage of nut, pad.In the fastening process of nut, its rotation torque is the same with the moment of torsion of plain nut, and does not significantly increase; After locking, if Hui Song occurs, then fastening force will be multiplied.So in fact unjaming angle levels off to zero, the utility model can need constitute removable (locking) respectively and non-disconnectable (antitheft) is threaded by using.Because the utility model can constitute the integrated type anti-loose anti-theft nut of different sizes on demand, and the integrated type jam nut also has certain theftproof performance.So can be widely used in railway, high tension electric tower, bridge, and being threaded of conventional machinery.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is that the overall structure of the removable jam nut of the utility model is faced generalized section.

Fig. 2 is the overall structure B-B schematic top plan view of the removable jam nut of the utility model

Fig. 3 is the generalized section of facing of the removable jam nut pad of the utility model.

Fig. 4 is the schematic top plan view of the removable jam nut pad of the utility model.

Fig. 5 is the generalized section of facing of the non-disconnectable anti-theft screw cap pad of the utility model.

Fig. 6 is the schematic top plan view of the non-disconnectable anti-theft screw cap pad of the utility model.

Fig. 7 is the schematic top plan view of connecting ring of the present utility model.

Fig. 8 is the generalized section of facing of connecting ring of the present utility model.

The overall structure of this integrated type anti-loose anti-theft nut is assembled by nut (1), steel ball (10), pad (8), connecting ring (3) and interim pipe close (9) as depicted in figs. 1 and 2.The nut and the corresponding bolts of this monolithic construction are connected, to reach two kinds of different using effect.A kind of is demountable after tightening with bolt, but prevents what nature became flexible.In the time will dismantling, then need to use special tool; A kind ofly cannot dismantle after tightening with bolt, it is loosening and antitheft to be used for anti-nature again.The difference of these two kinds of structures only is that its pad (8) is slightly different.

Nut of the present utility model (1), as shown in Figure 1, its seal face has flange (4), on the screw socket of seal face, has one group of axially interruption half moon inclined-plane breach (2) of symmetry, is projected as half moon in the horizontal direction; Breach (2) is axially having a gradient γ, have in the horizontal direction one consistent with lead angle β direction, greater than the lift angle α of 2 times of lead angle β, i.e. α＞2 β.Be interrupted the bosom of half moon inclined-plane breach (2) and place selected steel ball (10), the diameter d that the maximum depth hmax of breach (2) is a bit larger tham steel ball (10).When nut (1) when cooperating with bolt, one group on nut (1) screw socket is interrupted half moon inclined-plane breach (2) and has just formed one group of interruption ring wedge groove with bolt.The maximum nominal width of this wedge groove (wedge groove sidewall span to bolt) can guarantee at nut (1) seal face and pad (8) when compressing fully, makes steel ball (10) form the different grades of tolerance in this interruption ring wedge groove ^P/ _HThe slight interference fit of forming.After nut (1) locking, steel ball (10) will be clamped between the sidewall of bolt and nut (1) half moon inclined-plane breach (2) by pad (8).When artificially returning pine or vibration, steel ball (10) will force steel ball (10) along rising on the half moon inclined-plane of breach (2) because of being tightened the friction couple that is produced by bolt and nut (1) half moon inclined-plane breach (2) sidewall.Because the lift angle α on breach (2) inclined-plane is greater than 2 times of lead angle β, thus in bolt axis to forming bigger coupling mechanism force, make and artificially return pine or in fact vibration Hui Song can not occur, play locking effect.

Pad of the present utility model (8) is as Fig. 3, Fig. 4 and Fig. 5, shown in Figure 6.Fig. 3, shown in Figure 4 be the used pad of dismountable jam nut; Fig. 5, shown in Figure 6 be the used pad of non-removable anti-theft nut.The something in common of these two kinds of pads is: its outer rim has flange (4) diameter of the interior public circle of contact of the rank breach (6) of organizing a performance more than or equal to nut (1) greater than flange (4) external diameter of nut (1) on the outer rim.Difference is the inner edge that is it.For the pad that is used for detachable jam nut (8), also have on its inner edge one group with nut (1) screw socket on the corresponding base of interruption half moon inclined-plane breach (2) have the protruding thorn (11) on inclined-plane; And for the pad that is used for non-dismountable anti-theft screw cap (8), the protruding thorn of slope-less (11) then on its inner edge is the same with the inner edge of conventional pads.

Connecting ring of the present utility model (3), as Fig. 7, shown in Figure 8, its inner edge diameter is greater than the cornerwise length of nut (1), and one group of winglet (5) that is used to fasten the step (7) of pad (8) step breach (6) is arranged on the outer perimeter.

The utility model also has one to be used for prevention and to come off naturally from the screw of nut (1) at when construction steel ball (10), and the interim pipe close (9) with certain flexible nonmetallic material of gland in nut (1) screw.

Combine and assemble of the present utility model, as shown in Figure 1 and Figure 2.Place steel ball (10) in the interruption half moon inclined-plane breach (2) on nut (1) seal face, place pad (8) on the seal face; Connecting ring (3) cover leans against below the flange (4) of nut (1), and the winglet (5) of its outer perimeter is fastened on the step (7) of corresponding breach (6) of pad (8); Again with pipe close (9) gland in the screw of nut (1).

For detachable jam nut, as shown in Figure 1 and Figure 2.Its used pad has the special washer (8) of one group of protruding thorn (11) as shown in Figure 3, Figure 4 on the inner edge.The protruding thorn of this group (11) is corresponding with the interruption half moon inclined-plane breach (2) on nut (1) screw socket.When assembling, the straight wall of this group inclined convex thorn (11) is near the steel ball (10) that is positioned at the maximum depths hmax of nut (1) half moon inclined-plane breach (2), then, winglet (5) by connecting ring (3) fastens pad (8) again, and interim pipe close (9) gland gone in the screw of nut (1), be assembled into an integral body.Connecting ring (3) makes nut (1) and pad (8) unlikely separation, but nut (1) can produce relative rotation with pad (8).When the utility model was screwed into bolt, interim pipe close (9) meeting nature was ejected by bolt and comes off.When this detachable jam nut need be screwed into bolt, must rotate synchronously to guarantee nut (1) and pad (8) with supporting with it special tool, be beneficial to later dismounting.When need are dismantled, then also must nut (1) and pad (8) be rotated synchronously, and guarantee that by the inclined convex thorn (11) of pad (8) steel ball (10) and nut (1) are in relative static conditions with above-mentioned same special tool.Like this, dismounting the utility model is almost completely the same with the required moment of dismounting plain nut.But if need not supporting with it special tool, in case Hui Song appears in nut (1), then coupling mechanism force will be multiplied, and dismounting can not be gone on.So this jam nut in fact also has certain antitheft effect.

For non-dismountable anti-theft screw cap, its used pad (8) is as Fig. 5, shown in Figure 6, it is a kind of flat pad, promptly only need the inclined convex thorn (11) of special washer used in the detachable jam nut is removed, and the geomery and the assembling form that need not change other member get final product, in this case, in case tighten with bolt, with any instrument dismounting, all can not make the steel ball (10) and the half moon inclined-plane breach (2) of nut (1) be in relative static conditions.Steel ball (10) will rise along the half moon inclined-plane breach (2) of nut (1), makes bolt axis to forming bigger coupling mechanism force.So, in fact just formed a kind of non-removable being threaded.

Claims

1. an integrated type anti-loose anti-theft nut is characterized in that constituting an integral body by nut (1), steel ball (10), pad (8), connecting ring (3) and interim pipe close (9); Having on the seal face of nut (1) of flange (4) has axially to be interrupted a half moon inclined-plane breach (2), and steel ball (10) is placed in the bosom of breach (2); Inner edge is placed on the seal face of nut (1) greater than the pad (8) of nut (1) major diameter of thread; Outer perimeter has one group of winglet (5), the inner edge connecting ring (3) greater than nut (1) catercorner length, and cover is by below nut (1) flange (4), and fastens pad (8) with peripheral winglet (5); External diameter more than or equal to interim pipe close (9) gland of the interior warp of nut (1) in the screw of nut (1).

2. by the described integrated type anti-loose anti-theft of claim 1 nut, it is characterized in that a group on nut (1) the seal face screw socket axially is interrupted semilune inclined-plane breach (2), is half moon in horizontal projection; One gradient γ is axially being arranged, a lift angle α greater than 2 times of nut (1) lead angle β is being arranged in the horizontal direction; The maximum depth of breach (2) is a bit larger tham the diameter of steel ball (10).

3. by the described integrated type anti-loose anti-theft of claim 1 nut, it is characterized in that for non-removable anti-theft integrated type nut the outer rim of its pad (8) is greater than the outer warp of flange (4) of nut (1), and the rank breach (6) of organizing a performance on the outer rim; The interior public circle of contact of step breach (6) is more than or equal to flange (4) diameter of nut (1).

4. by claim 1 or 3 described integrated type anti-loose anti-theft nuts, it is characterized in that dismountable locking integrated type nut, its pad (8) except that outer rim is identical with non-dismountable antitheft integrated type nut, also have on its inner rim one group with nut (1) screw socket on the corresponding inclined convex of interruption half moon inclined-plane breach (2) perverse (11); The straight wall of inclined convex thorn (11) is interrupted the innermost steel ball of half moon inclined-plane breach (2) (10) near nut (1).

5. by claim 1 or 3 described integrated type anti-loose anti-theft nuts, it is characterized in that cover leans against the following connecting ring (3) of nut (1) flange (4), one group of winglet (5) on its outer perimeter is buckled in pad (8) organizing a performance on the step (7) of rank breach (6) correspondingly.

6. by the described integrated type anti-loose anti-theft of claim 1 nut, it is characterized in that the interim pipe close (9) of gland in nut (1) screw, its material is for having certain flexible nonmetallic material.