CN2292936Y - Nut with quincunx locking piece - Google Patents

Abstract

The utility model relates to a nut with a quincunx anti-loosing sheet, which comprises a nylon anti-loosing sheet whose center is provided with a clamping hole and a tightening part which is formed by press fitting in a hollow part on one side end of a nut body. The diameter of the clamping hole which is arranged by the nylon anti-loosing sheet is equal to the diameter of the bottom circle of the thread of a corresponding screw bolt. A plurality of semicircular notch grooves are arranged on the inner periphery of the clamping hole. The utility model can give play to excellent clamping force by means of the design of the notch grooves in the clamping hole of the nylon anti-loosing sheet. Then, the self-locking and anti-loosing functions can be achieved. The utility model has the effect of multiple reuse.

Description

Nut with quincunx anti-loosing slice

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

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

In addition, so-called spring lock nut is arranged, 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, just the reinforcement of its frictional force also is limited to the direct part that contacts of metal and metal, and its locking functions is still still inadequate.

Because the locking anti-loosing effect deficiency of above-mentioned existing jam nut, so relevant dealer just studies a kind of nylon jam nut is provided, shown in Fig. 6,7, it is to be equiped with a nylon anti-loosing slice 41 in nut 40 extended frameworks, and these nylon anti-loosing slice 41 central authorities are provided with a rounded endoporus 411, and make the endoporus 411 of this anti-loosing slice 41 be aligned in the screw 42 of corresponding nut 40; Because of its aperture with endoporus 411 is set as circular diameter at the bottom of the screw thread that is slightly less than bolt 30, so when being screwed together in bolt 30, the screw thread of tightening with the bolt 30 of its engagement is out of shape in the hole enlargement of the endoporus 411 of mat anti-loosing slice 41, 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 the anti-loosing effect than above-mentioned conventional construction is good, but its locking effect is of short duration also, and can't repeated multiple times use, because aforementioned jam nut is with screw threaded the time, the circular inner hole of anti-loosing slice 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 anti-loosing slice produces resistance (being torsion) in the mode of direct depressed deformation, but the part of extruding depression for a long time so that distortion is not because of there being any extension space, and cause the anti-loosing slice permanent deformation to make its elastic fatigue, so this jam nut is when using repeatedly, every use once its torsion just reduces once, and dropped to invalid following time of torsion numerical value, the anti-loosing effect natural depletion when its torsion.

Main purpose of the present utility model provides a kind of reusable and tool self-locking locking functions, can be repeatedly used and the nut with quincunx anti-loosing slice of long service life.

The technical solution of the utility model is to provide a kind of nut with quincunx anti-loosing slice, and body one side of this nut is formed with fastening portions, and pressing has an anti-loosing slice in the hollow portion of fastening portions central authorities, it is characterized in that:

Anti-loosing slice central authorities offer a clip hole, and its aperture approximates the end circular diameter of the corresponding bolt that screws togather with it, and the inwall periphery in clip hole is provided with several and is axially and is circular-arc short slot.

The utility model compared with the prior art advantage and good effect is very obvious.By above technological scheme as can be known, the utility model--the nut with quincunx anti-loosing slice is to have the following advantages:

(1) long service life: when in the middle of the inner circle wall in clip hole is screwing togather, being subjected to coming from the pressure of bolt, the excess stock that is extruded can be to the displacement of dredging property of short slot place, make the unlikely elastic fatique of material of anti-loosing slice, it is destroyed and permanent deformation takes place also can to avoid being extruded the part material structure.

(2) keep effective elasticity and recoverability: when its unnecessary local material was dredged to the short slot place, it was to have space fully flexible and that extend, and can keep material itself effectively elasticity and powerful recuperability.

(3) self-locking effect: when anti-loosing slice screws togather with corresponding bolt the time, because the friction factor of the nut body portion of this conventional metals system, friction factor much smaller than the anti-loosing slice of nonmetal system, so after the utility model and bolt locking, clip hole inner circumference 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.

Brief Description Of Drawings:

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

Fig. 3 is a floor map of the present utility model, shows that anti-loosing slice is installed in the 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 action of conventional construction.

Fig. 7 is the end view of conventional construction.

Referring to shown in Figure 1, the utility model is to be extended with a fastening portions 22 on nut body 20, is formed with the hollow portion 23 of a circle in the fastening portions 22, 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 to be the discoideus and central clip hole 11 that offers, and on the inner circle wall in clip hole 11 and be provided with several and be axial setting and be the short slot 12 of circular arc, what disclosed in graphic is to be designed to six short slots 12.

Shown in Fig. 2,3, during combination, earlier anti-loosing slice 10 is put into the hollow portion 23 of fastening portions 22, then the wall end face 221 of the external side brim 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.

Referring to Fig. 4 and shown in Figure 5, clip hole 11 diameters of anti-loosing slice 10 approximate the circular diameter of the externally threaded end of bolt 30, and are provided with several short slot 12 because of the inner circle wall in clip hole 11; Therefore, when the inner circle wall face in clip hole 11 be in screw togather in the middle of, when being subjected to from the extrusion of the pressure of bolt 30, the unnecessary local material that is stressed can be to short slot 12 dredging property displacements, make clip hole 11 that rhegma not take place, except that avoiding losing the elasticity of its recovery, the material structure that also can avoid being stressed part is destroyed and permanent deformation takes place.

Claims (1)

1, a kind of nut with quincunx anti-loosing slice, its body one side is formed with fastening portions, and pressing has an anti-loosing slice in the hollow portion of fastening portions central authorities, it is characterized in that:

Anti-loosing slice central authorities offer a clip hole, and its aperture approximates the end circular diameter of the corresponding bolt that screws togather with it, and the inwall periphery in clip hole is provided with several and is axially and is circular-arc short slot.

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