CN2130953Y

CN2130953Y - Screw-thread coupling part with preventing-looseness and-theft features

Info

Publication number: CN2130953Y
Application number: CN 92209438
Authority: CN
Inventors: 晏成和; 晏成煦
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-28
Filing date: 1992-04-28
Publication date: 1993-04-28
Anticipated expiration: 2002-04-28

Abstract

The utility model relates to a screw-thread coupling part with preventing-looseness and-theft features, comprising a screw bolt 1, a nut 2 and non-return pawl pieces. The bolt 1 is axially opened with a deflecting gap. The inner side of the nut 2 is axially opened with a groove. The non-return pawl pieces are arranged in the groove of the nut 2 and the gap of the screw bolt 1. The utility model with the advantages of low cost, simple structure and easy fabrication, can improve the screw bolt and the nut the existing standard parts. The reverse clearance of the screw-thread coupling part with preventing-looseness and-theft features is smaller than one or half thread pitch. The utility model has the preventing-looseness and-theft performance, can be used to the fields of the traffic, the bridge, the electricity, etc., and can be used for fixedly connecting the unwatched work piece.

Description

Screw-thread coupling part with preventing-looseness and-theft features

The utility model belongs to mechanical engineering technical field, specifically a kind of locking, antitheft thread connector that is used for fastening workpiece.

Threaded connection device uses very extensive; but; it is under varying load or bump and vibration situation; usually can get loose; in unattended many workpiece, equipment; thread connector also takes place often to be disassembled; stolen or the phenomenon damaged of workpiece and equipment; for preventing the loosening of thread connector and dismounting easily; now existing multiple locking; anti-theft bolt, wherein most representative is CN86207878 and CN89219210.0 disclosed " shell fragment stopping device " and " locking and antitheft assembling bolt, nut ".CN8620787 is characterised in that by the bolt of four road chamfered grooves and forms with the floor clip that can be fixed on two retaining sheets on the nut, CN89219210.0 is characterised in that and has one groove on the bolt vertically, check packing ring one end has inflexed right angle spinal plate, one end of nut has recessed cylinder, the right angle spinal plate of check packing ring is inserted in the groove of bolt, when the check packing ring is pressed into the recessed cylinder back nut of nut by check.But the former floor clip and two small columns that only depend on connecting of nut on the floor clip, under forceful action, be easier to be subjected to shearing force and lost efficacy, also to make two arcuation ratchets on the floor clip, in two curved holes of the tangential brill of its circle, and on screw rod, open four road chamfered grooves, its technology difficulty is big and cause the cost of production height, and when its connection of dismounting, only need to stretch in the little curved hole of exposure with two steel wires just detachable, its anti-theft is obviously not good; The latter also exists packing ring, and ratchet is thin and the not high problem of intensity lost efficacy under brute force easily, and need the recessed cylinder in the nut is processed into ratchet etc., its technology difficulty is big and causes cost of production to increase equally, and can't dismantle its connection at all, makes it anti-theft and practicability is relatively poor.

The purpose of this utility model provides a kind of simple in structure, makes easily, and is with low cost, locking, antitheft, safe and reliable, and the threaded connector of certain dismounting difficulty is arranged.

The purpose of this utility model is made up of bolt, nut and retaining spinal plate, has the deflection breach on the bolt vertically, and the nut inboard has groove vertically, and the retaining spinal plate places the deflection breach and the groove of nut and bolt.

The retaining spinal plate is made of shell fragment and retaining sheet, and shell fragment is that grade separation is connected with retaining sheet, and shell fragment is thinner, and retaining sheet is thicker; One side of deflection breach on the bolt and its radial parallel, another side is towards screwing direction.

Outstanding advantage of the present utility model is, structure is very simple, make easily, also can change a social system existing standard bolt, nut, it is with low cost, being easy to the standardization seriation applies, its counter-rotating gap is less than one or half pitch, locking, antitheft and Safety performance is reliable, the different connection form of attaching nut structure, can hold the variation of the complexity and the method for dismounting, make it to have anti-theft and practicability better, can be widely used in traffic, bridge, electric power facility and the unattended workpiece.

Further specify below in conjunction with embodiment's accompanying drawing of the present utility model:

Fig. 1: the utility model embodiment 1 assembling schematic representation;

Fig. 2: A-A portion view among Fig. 1,

Fig. 3: the utility model embodiment 1 bolt plan view;

Fig. 4: B-B sectional view among Fig. 3,

Fig. 5: the utility model embodiment 1 nut structure schematic representation;

Fig. 6: the utility model retaining spinal plate plan view;

Fig. 7: retaining spinal plate plan view;

Fig. 8: the nut three-view diagram among the embodiment 2.

As shown in Figure 1 and Figure 2, wherein: 1, bolt, 2, nut, 3, the retaining spinal plate, 4, be assembled workpiece, device has retaining spinal plate 3 in the groove of the deflection breach of bolt 1 and nut 2.

As shown in Figure 3, Figure 4, on bolt 1, have the deflection breach vertically, one side of its breach and its radial parallel, another side screws direction towards nut.Here, the deflection breach on the bolt 1 also can have two or many.

As shown in Figure 5, have obstructed groove vertically in the inboard of nut 2, its notch is a rectangle.

As Fig. 6, shown in Figure 7, retaining spinal plate 3 is formed by connecting by shell fragment 5 and retaining sheet 6, shell fragment 5 selects thin rubber-like metal or plastic materials to make, retaining sheet 6 is selected for use thick slightly and higher metallic material or other material of intensity, shell fragment 5 and retaining sheet 6 are rectangle, its the size with bolt 1 on the deflection breach and the groove on the nut 2 match, shell fragment 5 is fixedlyed connected V-shaped with retaining sheet 6.The shell fragment 5 here also can be other shape, and it can also have the fixedly grade separation of other form to be connected with retaining sheet 6, for example convex or upright connection etc.

When using assembling, put retaining spinal plate 3 in the groove of nut 2 and be screwed on the bolt 1, wherein, shell fragment 5 on the retaining spinal plate 3 is positioned at nut 2 one sides, retaining sheet 6 is in bolt 1 one sides, when clockwise direction screws nut 2, shell fragment 5 on the retaining spinal plate 4 is pressed and is superimposed with retaining sheet 6, be tightened on the bolt 1 until nut 2, when counter-rotating nut 2, the retaining sheet 6 of retaining spinal plate 3 is sprung in the deflection breach of bolt 1 by the shell fragment above it 5, and retaining sheet 6 promptly stops the reverse of nut 2, and because of retaining sheet 6 stress surfaces are bigger and more abundant, so, brute force can not lose efficacy even reversing yet.

Embodiment 2:

As shown in Figure 8, it is on preceding a kind of embodiment basis, and the axial non-thorough cut groove that changes nut 2 inboards is a groove, end welding and the identical nut of nut 2 internal diameters at nut 2, it uses assembling identical with preceding embodiment, and when wherein nut 2 spun with bolt 1, nut one side of adjunction outwardly.When being connected of dismounting nut 2 and bolt 1, can be according to the material and the variation thereof of nut 2 welds, heating different temperatures tip-off, taking-up retaining spinal plate 3, nut 2 can unload from bolt 1.

The utility model is locking, theftproof performance is good, and is fool proof reliable, can be widely used in the disposable and permanent scyewed joint of any workpiece.

Claims

1, a kind of locking, antitheft thread connector has bolt 1, nut 2, have the deflection breach on the bolt 1 vertically, it is characterized in that retaining spinal plate 3 in addition, nut 2 inboards have groove vertically, and retaining spinal plate 3 places the groove and the deflection breach of nut 2 and bolt 1;

2, according to the described thread connector of claim 1, it is characterized in that retaining spinal plate 3, be made of shell fragment 5 and retaining sheet 6 that shell fragment 5 is fixedlyed connected with retaining sheet 6 grade separations, and retaining sheet 6 is thicker, shell fragment 5 is thinner;

3, according to the described thread connector of claim 1, it is characterized in that one side and its radial parallel of the deflection breach on the bolt 1, another side is towards screwing direction;

4, according to the described thread connector of claim 1, it is characterized in that placing nut 2 and the groove of bolt 1 and the retaining sheet 6 of deflection breach to be positioned at bolt 1 one sides, shell fragment 5 is positioned at nut 2 one sides, and the opening of retaining spinal plate 3 is towards the direction that screws of screw thread.