CN2272961Y

CN2272961Y - Nut with polygonal chenk piece

Info

Publication number: CN2272961Y
Application number: CN 96243582
Authority: CN
Inventors: 吴水生
Original assignee: Luomao Enterprise Co ltd
Current assignee: Luomao Enterprise Co ltd
Priority date: 1996-10-17
Filing date: 1996-10-17
Publication date: 1998-01-21
Anticipated expiration: 2006-10-17

Abstract

The utility model relates to a nut with polygonal anti-loosing sheet, which is composed of a nylon anti-loosing sheet whose center is provided with a polygonal frame body and a tightening part which is formed by press fitting in a hollow part on one side end of a nut body. Two opposite edges of the frame body which is arranged by the nylon anti-loosing sheet are made into be a little smaller than the diameter of the bottom circle of the thread of a corresponding screw bolt. A chamfering edge is formed between the two opposite edges. The polygonal frame body which is provided with the chamfering edge give play to excellent clamping force by means of frame body of the nylon anti-loosing sheet, so the self-locking and anti-loosing functions are achieved. In addition, the utility model has the effect of multiple reuse.

Description

Nut with polygonal anti-loosing slice

The utility model relates to a kind of nut with polygonal anti-loosing slice, refers to a kind of self-locking locking functions that has especially, and the practicability jam nut that can be repeatedly used.

At appreciable jam nut on the market, adopt mostly and add a spring washer below the traditional type nut at present, it is that the upwards elastic force that utilizes the spring washer of pad below this nut to produce nut with roof pressure, is difficult for getting loose when it is vibrated; The frictional force when yet the locking effect of this kind only depends on above-mentioned elastic force to be incorporated into bolt to improve nut between both screw threads and oneself, so its anti-loosing effect is limited and can not be lasting.

In addition, a kind of spring lock nut, it is to rely on taper shape on the nut to be divided into spring detent to strengthen screw thread side frictional force between this nut and bolt, make this nut when being vibrated, be difficult for getting loose, but the reinforcement of its frictional force also is limited to metal to be contacted partly with the direct of metal, and its locking functions is still still inadequate.

Because the locking anti-loosing effect of above-mentioned existing jam nut is undesirable, relevant dealer designs a kind of nylon jam nut, shown in Fig. 6,7, it is to be to be equiped with a nylon anti-loosing slice 41 in the nut 40 extended frameworks, and these locking nylon6 chips 41 central authorities are provided with a rounded perforation 411, and the perforation 411 of this nylon anti-loosing slice 41 are aligned in the screw 42 of corresponding nut 40; Become to be slightly less than circular diameter at the bottom of the screw thread of bolt 30 because of its aperture design of 411 of will boring a hole, so when being screwed together in bolt 30, utilize the hole enlargement of the perforation 411 of nylon anti-loosing slice 41 to be out of shape to tighten screw thread with the bolt 30 of its engagement, to produce the similar friction tight effect of tightening, increase the frictional force of both mates, prevent the effect that nut gets loose with performance.

This nut prevents the effect that gets loose, though better than the anti-loosing effect of above-mentioned conventional construction, aforementioned its anti-loosing effect of jam nut that nylon6 chips is set in framework is of short duration, and can't repeatedly use by repetitiousness.Because, aforementioned jam nut is with screw threaded the time, the circular perforations of its nylon6 chips central authorities is slightly less than the end circular diameter of bolt thread because of the aperture, so can reach the locking effect of its stop because of nylon6 chips produces resistance (being torsion) in the mode of direct depressed deformation, but the part of for a long time extruding depression so that distortion is not because of there being any extension space, and causes the anti-loosing slice permanent deformation to make its elastic fatique.So this jam nut is when using repeatedly, every use once its torsion just reduces once, and has dropped to invalid following time of torsion digital, the anti-loosing effect natural depletion when its torsion.

The main purpose of the utility model design is to be to provide a kind of reusable nut with polygonal anti-loosing slice with self-locking locking functions and long service life.

The technical solution of the utility model is to provide a kind of nut with polygonal anti-loosing slice, comprise that an one end is formed with the nut body of fastening portions, pressing has an anti-loosing slice in the hollow portion of the fastening portions of described nut body, its characteristics are: these anti-loosing slice central authorities are a polygonal framework, this polygonal framework is formed by several relative edges and bevel edge, and wherein bevel edge is smaller than the relative edge and between two adjacent relative edges.

Aforesaid nut with polygonal anti-loosing slice, its characteristics are: relative edge's length of this anti-loosing slice is slightly less than the internal diameter in nut aperture.

Nut with polygonal anti-loosing slice of the present utility model has the following advantages:

(1) long service life: with the Octagon in scheming is example, when in the middle of two relative edges' of its framework mid point portion is screwing togather, being under pressure, the excess stock that is extruded can be to the displacement of the dredging property of bevel edge that is slightly larger than 113～117 times of relative edges, make the unlikely elastic fatique of its framework, it is destroyed and permanent deformation takes place also can to avoid being extruded the part material structure.

(2) keep effective elasticity and recoverability: dredge to the time when its unnecessary local material, make it that flexible space of extending be arranged, and can keep effective elasticity and powerful recovery capacity greater than bevel edge.

(3) self-locking effect: the nylon anti-loosing slice is when being screwed together in corresponding bolt, because the friction factor of this metal nut body portion is much smaller than the friction factor of the nylon anti-loosing slice of nonmetal system, so behind the lock nut, the framework edge is subjected to the pressure from the nut direction, makes it can bring into play the effect of self-locking.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Fig. 1 is a perspective exploded view of the present utility model, shows that anti-loosing slice is not installed in the stereogram of nut body as yet.

Fig. 2 is a plane of the present utility model decomposing schematic representation, shows that anti-loosing slice is not installed in the schematic representation of nut body as yet.

Fig. 3 is a floor map of the present utility model, shows that anti-loosing slice is installed in the schematic representation of nut body.

Fig. 4 is an end view of the present utility model, shows the situation that anti-loosing slice combines with bolt.

Fig. 5 is that schematic representation is implemented in action of the present utility model.

Fig. 6 is that schematic representation is implemented in the conventional screw cap action.

Fig. 7 is the end view of conventional screw cap.

As shown in Figure 1, the utility model is to be extended with a fastening portions 22 on nut body 20.The end that nut body 20 is positioned at fastening portions 22 is formed with the hollow portion 23 of a circle, so that an anti-loosing slice 10 is installed, this anti-loosing slice 10 can be made by similar materials such as nylon.Aforementioned anti-loosing slice 10 is the tabular and central polygon hole that is provided with of figure, this polygon hole can be odd number side and also can be even number of sides, with disclosed embodiment in scheming, be to be example with the Octagon, be provided with the slightly long relative edge 111 of two length in this polygonal hole, and between two relative edges 111, respectively be formed with bevel edge 112, and wherein each relative edge's 111 length is slightly less than the internal diameter in nut body 20 apertures, and the length of each bevel edge 112 then is smaller than aforementioned relative edge 111 and forms a framework 11 that is anistree prismatic.Please consult shown in Fig. 2,3 again, during combination, earlier anti-loosing slice 10 is put into the hollow portion 23 of aforementioned fastening portions 22, then the wall end face 221 in the outside of this hollow portion 23 of punching press, make its peripheral part of anti-loosing slice 10 of linking closely that curves inwardly, this anti-loosing slice 10 is installed in the fastening portions 22.

Please referring to shown in Figure 4, two couples of relative edges' 111 of the framework 11 of this anti-loosing slice 10 width all is slightly less than the circular diameter of the externally threaded end of bolt 30, and is formed with bevel edge 112 because of two 111 of adjacent relative edges; Therefore, when in the middle of the relative edge's 111 of framework 11 mid point portion is screwing togather, being under pressure, the unnecessary local material that is stressed can be to bevel edge 112 dredging property displacements, make this framework 111 that rhegma not take place, except that avoiding losing the elasticity of its recovery, the material structure that also can avoid being stressed part goes to pot and permanent deformation takes place.

Claims

1. the nut with polygonal anti-loosing slice comprises that an one end is formed with the nut body of fastening portions, and pressing has an anti-loosing slice in the hollow portion of the fastening portions of described nut body, it is characterized in that:

These anti-loosing slice central authorities are a polygonal framework, and this polygonal framework is formed by several relative edges and bevel edge, and wherein bevel edge is smaller than the relative edge and between two adjacent relative edges.

2. the nut with polygonal anti-loosing slice according to claim 1 is characterized in that: relative edge's length of this anti-loosing slice is slightly less than the internal diameter in nut aperture.