CN2890465Y

CN2890465Y - Anti-loose and anti-dismantling nut

Info

Publication number: CN2890465Y
Application number: CN 200620099941
Authority: CN
Inventors: 胡秋庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-28
Filing date: 2006-03-28
Publication date: 2007-04-18
Anticipated expiration: 2016-03-28

Abstract

The utility model discloses a fastening piece, in particular to an anti-loose and anti-dismantling nut, which comprises a screw nut body (1), an internal thread (4) is processed on the screw nut body (1). The utility model is characterized in that the internal thread (4) of the screw nut (1) is provided with a radial groove (2); a roll ball (3) is arranged in the groove (2), the depth of the groove (2) is of gradual change form; the depth dimension at much deeper place is in accord with the diameter of the roll ball (3); a hole is processed on the screw nut body (1); an elastic part (6) is positioned in the hole; one end of the elastic part (6) is against the roll ball (3) and the other end of the elastic part (6) is against a plug (5) which is fastened in the hole of the screw nut body (1). As the elastic part is a spring in the special hole of the screw nut body, the elastic part is arranged in the hole from the outside, quite conveniently and not easy to fall off. As the outer flank of the screw nut is of odd sides and the opposite of each side is an angularity, normal spanners are not possible for turning. Without any suitable tools, the screw nut is not dismantled easily, which together with the squeezing actions of the spring and the roll ball at the time of dismantling the screw nut more effectively prevents dismantling and loosening, in particularly applicable for fastening open-air electric facilities and other equipments.

Description

Locking, removing nut

Technical field:

The utility model relates to a kind of fastening piece, and particularly a kind of locking, removing nut mainly is to match with bolt to be used to prevent that bolt or nut are by occasion that other people unload.

Background technique:

Nut is widely used as fastening piece, and the structure of existing nut is that a nut body is arranged, and is processed with internal thread in the center of nut body and matches with bolt when using, and the cylindrical of nut is processed into equilateral Hexagon or quadrilateral mostly and is used for spanner and twists.This nut is not suitable for anti-unloading occasion, because be easy to unload with spanner, particularly fastening as the field electric facility more can not be used this common nut.In order to address the above problem, the interior threaded hole place at nut that has radially is processed with groove, in groove, be provided with elastic component and ball, the degree of depth of groove is a gradual change shape, depth dimensions than the depths is consistent with the diameter of ball, when swivel nut on bolt, ball contacts with bolt to be driven by friction and presses to elastic component and make ball enter groove than the depths, does not influence the screw-in nut this moment, fastening after, as rotating nut round about, because the effect of elastic component can be pressed to bolt with ball, make ball shift to the more shallow place of groove and squeeze between nut and bolt, causing can not rotating nut, reach the purpose of blocking and antiunloading, the nut of this structure is used in field electric facility or other equipment fastening more, according to the application in the practice, because elastic component and ball are installed by screw inside, will pay close attention to the mutual alignment during use, come off easily, inconvenience, difficulty of processing is big.Because the outside of nut is Hexagon or quadrilateral that available spanner rotates, if use the arm of force long and have the spanner of enough moments of torsion also can destroy the nut fastener of this structure, as twist off bolt or thoroughly destroy screw thread it is come off etc., finally reach the purpose that unloads, therefore, the blocking and antiunloading effect of existing nut is unsatisfactory.

Summary of the invention:

The purpose of this utility model provides a kind of easy for installation, locking, removing nut of using common spanner can not rotating nut and can lock when unloading lower nut direction rotating nut, overcome the deficiencies in the prior art.

Technical solution of the present utility model is: a kind of locking, removing nut, it comprises nut body 1, on nut body 1, be processed with internal thread 4, it is characterized in that: internal thread 4 places at nut body 1 are provided with radial groove 2, be provided with ball 3 in the groove 2, the degree of depth of groove 2 is the gradual change form, depth dimensions than the depths is consistent with the diameter of ball 3, processing is porose on nut body 1, be provided with elastic component 6 in the hole, one end of elastic component 6 leans on ball 3, and the other end of elastic component 6 leans on stifled 5, in stifled 5 holes of being fixed on the nut body 1.

The outer side of described nut body 1 is the polygonal of odd number for the limit number.

The polygonal of described odd number is five limits or seven limits or nine limits or ten one side.

Described polygonal is an equilateral polygon.

The utility model compared with prior art, because elastic component is spring and the special hole that is positioned at nut body, can in stretching into the hole, the outside install, very convenient, difficult drop-off, processing is simple, because the limit number of the outer side of nut is an odd number, the opposite on a limit is horn shape therein, can't use common spanner to rotate, and is not having under the proper tools situation, can not arbitrarily be unloaded, spring and the ball squeezing action when unloading lower nut has prevented to be unloaded and become flexible more effectively in addition, is particularly suitable for the fastening of field electric facility and other equipment.

Description of drawings:

Fig. 1 is the main cross-sectional schematic of the utility model embodiment;

Fig. 2 is an A-A sectional schematic diagram shown in Figure 1.

Embodiment:

As shown in the figure: 1 is nut body, is processed with internal thread 4 in the central hole of nut body 1, and the outer side of nut body 1 is processed into polygonal, its polygonal limit number is 11, the limit number also can be 5 or 7 or 9, and described polygonal is equilateral polygonal, also can be unequal-sided irregular polygon.When cooperating rotation with bolt, utilize the special tool that matches with polygonal to get final product.Promptly in use prevented from effectively after fastening to unload, both just used the grow up common spanner of moment of torsion of the arm of force to destroy the structure of bolts and nuts with general tool, also can't torque nut.

Internal thread 4 places at nut body 1 radially are processed with groove 2, in groove 2, be provided with ball 3, the degree of depth of groove 2 is a gradual change shape, depth dimensions than the depths is consistent with the diameter of ball 3, processing is porose on nut body 1, be provided with elastic component 6 in the hole, elastic component 6 can be the elastic component of spring or the making of other elastic materials.One end of elastic component 6 leans on ball 3, and the other end of elastic component 6 leans on stifled 5, in stifled 5 holes of being fixed on the nut body 1, stifled 5 with nut body 1 between can be scyewed joint or bonding or rivet.When swivel nut on bolt, ball 3 contacts with bolt to be driven by friction and presses to elastic component 6 and make ball 3 enter groove than the depths, do not influence the screw-in nut this moment, after fastening, as rotating nut round about, because the effect of elastic component 6, ball 3 can be pressed to bolt, make ball 3 shift to groove 2 more shallow places and squeeze between nut and bolt under elastic force and the frictional force action, causing can not rotating nut, reaches the purpose of blocking and antiunloading.The slightly larger in diameter of ball 3 enters in this hole to prevent ball 3 in the diameter in hole, elastic component 6 place.

Claims

1, a kind of locking, removing nut, it comprises nut body [1], on nut body [1], be processed with internal thread [4], it is characterized in that: the internal thread [4] in nut body [1] locates to be provided with radial groove [2], be provided with ball [3] in the groove [2], the degree of depth of groove [2] is the gradual change form, depth dimensions than the depths is consistent with the diameter of ball [3], upward processing is porose at nut body [1], be provided with elastic component [6] in the hole, one end of elastic component [6] leans on ball [3], and the other end of elastic component [6] leans on stifled [5], and stifled [5] are fixed in the hole on the nut body [1].

2, locking, removing nut according to claim 1 is characterized in that: the outer side of described nut body [1] is the polygonal of odd number for the limit number.

3, locking, removing nut according to claim 2 is characterized in that: the polygonal of described odd number is five limits or seven limits or nine limits or ten one side.

4, locking, removing nut according to claim 3 is characterized in that: described polygonal is an equilateral polygon.