CN201173235Y

CN201173235Y - Vibration-resistant anti-loose nut with build in elastic ring

Info

Publication number: CN201173235Y
Application number: CNU2008201054140U
Authority: CN
Inventors: 张连墩
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-03
Filing date: 2008-04-03
Publication date: 2008-12-31
Anticipated expiration: 2018-04-03

Abstract

The utility model discloses an anti-vibration locknut with an elastic ring inside, which comprises a slotted nut and the elastic ring. A groove circumferentially encircling an ordinary nut is arranged at one end or the position of central screw threads of the ordinary nut, the elastic ring is embedded in the groove, and the elastic ring is partially emerged from the groove. After a bolt is screwed in and presses the elastic ring, the self-hold intensity of the locknut is enhanced through the locknut and the bolt because of the pressed elastic ring, and simultaneously, because the elastic ring is pressed, the tightly seamless contact is ensured between the locknut and the bolt, therefore, the anti-vibration locknut with an elastic ring inside is provided with good anti-vibration and anti-loosing performance and sealing effect, and the repeated use can be performed.

Description

The antivibration lock nut of interior dress elastic ring

Technical field

The invention belongs to fastener areas, relate in particular to a kind of antivibration lock nut of interior dress elastic ring.

Technical background

Bolt, nut be modern structure with most widely used being connected and one of fastening accessory of machinery.Though plain bolt, nut all have self-locking performance in use, be subjected to the external force factor effect, when changing greatly as vibration, impact, variable load and thermal stress, the connection of bolts and nuts is prone to loosening, even occurs coming off.Nut loosening will cause connecting or the reducing even lose of fastening strength, thereby influence the quality of connection of bolts and nuts, cause each parts of connection to damage prematurely, even cause equipment failure and personal safety accident.The invention of use or disclosed lock nut at present, the locking safety reliability that has is not ideal, and the complex structure that has is made loaded down with trivial details, the operation inconvenience that has.

Summary of the invention

The purpose of this utility model is at above-mentioned deficiency, provide a kind of locking property strong, safe and reliable, can seal, easy to use a kind of in the antivibration lock nut of dress elastic ring.

To achieve these goals, the technical solution of the utility model is: the antivibration lock nut of dress elastic ring comprises a slotted nut and an elastic ring in a kind of.

Described slotted nut is to be provided with a groove around described one week of nut at plain nut one end or central, threaded place, and the degree of depth of described groove is greater than the described nut thread groove degree of depth.

The external diameter of described elastic ring is smaller or equal to the diameter of described groove bottom land; The internal diameter of described elastic ring is less than the screw thread line peak diameter of described nut.The outer surface of described elastic ring is smooth surface/or thread surface, and when the outer surface of described elastic ring was thread surface, the outer surface thread of described elastic ring communicated with described bolt thread after screwing on bolt.The internal diameter of described elastic ring and described nut thread diameter poor decided by the elasticity size of described elastic ring.

Described elastic ring embeds described groove, and described elastic ring has part to expose described groove.

Described elastic ring comprises rubber, plastics and magnetic rubber and magnetic plastics.

Its working principle is: the antivibration lock nut of a kind of interior dress elastic ring of the present utility model is after bolt screws in and oppresses described elastic ring, described lock nut and bolt increase the self-locking strength of described lock nut owing to described elastic ring pressurized, simultaneously also make described lock nut and bolt closely seamless because of described elastic ring is compressed, therefore described lock nut has locking property of good antivibration and sealing effect.

Description of drawings

Below in conjunction with accompanying drawing and example shown in the drawings, the utility model is described in further detail, but the content of invention is not limited thereto.

Fig. 1 be of the present utility model in one of the cross-sectional view of antivibration lock nut of dress elastic ring;

Fig. 2 is the antivibration lock nut working state structure schematic representation of the interior dress elastic ring of Fig. 1;

Fig. 3 be of the present utility model in the dress elastic ring the antivibration lock nut cross-sectional view two;

Fig. 4 is the antivibration lock nut working state structure schematic representation of the interior dress elastic ring of Fig. 3;

Fig. 5 be of the present utility model in the dress elastic ring the antivibration lock nut cross-sectional view three;

Fig. 6 is the antivibration lock nut working state structure schematic representation of the interior dress elastic ring of Fig. 5;

Embodiment

Embodiment 1

As shown in Figure 1, the antivibration lock nut of interior dress elastic ring of the present utility model comprises a slotted nut 3 and an elastic ring 2 that is provided with a groove.The outer surface 4 of elastic ring 2 has worm structure, and elastic ring 2 is installed in the groove 1 of slotted nut 3, and some is exposed at the outside of groove 1 elastic ring 2.

As shown in Figure 2, after the antivibration lock nut of dress elastic ring screwed in bolt 5 in of the present utility model, the elastic ring 2 among Fig. 1 was compacted into the elastic ring 6 among Fig. 2.

Embodiment 2

As shown in Figure 3, the antivibration lock nut of interior dress elastic ring of the present utility model comprises a slotted nut 10 and an elastic ring 9 that is provided with a groove.The outer surface 8 of elastic ring 9 has worm structure, and elastic ring 9 is installed in the groove 7 of slotted nut 10, and some is exposed at the outside of groove 7 elastic ring 9.

As shown in Figure 4, after the anti-Chun lock nut of dress elastic ring screwed in bolt 5 in of the present utility model, the elastic ring 9 among Fig. 3 was compacted into the elastic ring 11 among Fig. 4.

Embodiment 3

As shown in Figure 5, the antivibration lock nut of interior dress elastic ring of the present utility model comprises a slotted nut 13 and an elastic ring 14 that is provided with a groove.The outer surface 15 of elastic ring 14 is a smooth surface, and elastic ring 14 is installed in the groove 12 of slotted nut 13, and some is exposed at the outside of groove 12 elastic ring 14.

As shown in Figure 6, after the antivibration lock nut of dress elastic ring screwed in bolt 5 in of the present utility model, the elastic ring 14 among Fig. 5 was compacted into the elastic ring 16 among Fig. 6.

Claims

1, a kind of antivibration lock nut of interior dress elastic ring, comprise a slotted nut and an elastic ring, it is characterized in that described slotted nut is to be provided with a groove around described one week of nut at plain nut one end or central, threaded place, described elastic ring embeds described groove, and described elastic ring has part to expose described groove.

2, the antivibration lock nut of a kind of interior dress elastic ring according to claim 1, the degree of depth that it is characterized in that described groove is greater than the described nut thread groove degree of depth.

3, the antivibration lock nut of a kind of interior dress elastic ring according to claim 1 is characterized in that the diameter of the external diameter of described elastic ring smaller or equal to described groove bottom land; The internal diameter of described elastic ring is less than the screw thread line peak diameter of described nut.

4, the antivibration lock nut of a kind of interior dress elastic ring according to claim 1, the outer surface that it is characterized in that described elastic ring is smooth surface/or thread surface, when the outer surface of described elastic ring was thread surface, the outer surface thread of described elastic ring communicated with described bolt thread after screwing on bolt.

5, the antivibration lock nut of a kind of interior dress elastic ring according to claim 1 is characterized in that described elastic ring comprises rubber, plastics and magnetic rubber and magnetic plastics.