CN2893283Y

CN2893283Y - Structural improvement of tensile antitheft nut

Info

Publication number: CN2893283Y
Application number: CN 200620059155
Authority: CN
Inventors: 韩安卓
Original assignee: FOSHAN ZISHENG DIANLI ACCESSORIES MANUFACTURING Co Ltd
Current assignee: FOSHAN ZISHENG DIANLI ACCESSORIES MANUFACTURING Co Ltd
Priority date: 2006-05-19
Filing date: 2006-05-19
Publication date: 2007-04-25
Anticipated expiration: 2016-05-19

Abstract

The utility model discloses a theft-protecting nut with simple installation, reliable locking, and greatly enhanced tensile performance. The theft-protecting nut comprises a main body of nut, and a steel ball; wherein, an inner wall of the main body of the theft-protecting nut is provided with at least a transverse semi-wedge type groove, the transverse semi-wedge type groove goes in from shallow to deep following the spinning direction of the bolt, a spring is pre-arranged at the deeper side, and the steel balls are positioned at the shallower side, the main wall top of the outward spinning end of the bolt of the main body of the nut are integrally provided with a circular tensile member, the inner diameter of the circular tensile member is the same as that of the main body of the nut, and the inner wall is provided with screw threads identical with the screw thread pitch and direction and direction of the main body of the nut. The existence of the circular tensile member greatly enhances the tensile performance of the nut and simultaneously saves the step of enchasing an anti-loosing ring in the circular deep groove, enables customers to identify the inward spinning end and the outward spinning of the nut and reaches a more reliable locking made by the nut through the cooperation between the spring and the steel balls.

Description

The structure improvement of tension anti-theft nut

Technical field:

The utility model relates to construction and uses technical field of fastening, refers in particular to a kind of structure improvement of the tension anti-theft nut of being convenient to install.

Background technique:

The common structure of the anti-theft nut that engineering is used in the prior art is for including nut body, the retaining pin, the retaining pin is located in the wedge type groove of inwall of nut body, on the bolt back-out end inner hole wall of nut body, be provided with the ring-like deep trouth of a circle, be embedded the anti-DNA releaxed circular DNA of a nylon that cooperates with the wedge type groove in this annular deep trouth, the anti-DNA releaxed circular DNA of this nylon can prevent that pin from dropping out and cause nut anti-loose with cooperating of bolt, though this kind structure has played anti-loosing effect effectively, but this kind structure of anti-DNA releaxed circular DNA of nylon and nut, in practice of construction, installation steps are more, and the retaining pin produces displacement easily after the nut check toward the half wedge type slot depths, thereby loses anti-theft feature.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art part, provide a kind of rational in infrastructure, the anti-theft nut that simple, reliable lock, tensility greatly improve is installed.

For achieving the above object, the technological scheme that the utility model provides is: include nut body, retaining spare, it is characterized in that: the inwall in nut body is provided with at least one horizontal half wedge type slot and a vertical half wedge type slot, described horizontal half wedge type slot and vertical half wedge type slot are even along the bolt screw-in direction from shallow to deep, wherein laterally the darker side of half wedge type slot is preset spring, steel ball is placed in a more shallow side activity, vertically presets the column type pin in the half wedge type slot.

The bolt of nut body screws out that the Ben Bi top of end is one-body molded a ring-like tensile members, and the internal diameter of this annular tensile members is identical with the internal diameter size of nut body, and forms thread pitch and the consistent screw thread of direction with nut body on the inwall.

After the utility model adopts technique scheme, because the effect of spring, steel ball in the horizontal half wedge type slot is pushed up all the time to the more shallow end of horizontal half wedge type slot, vertically the column type pin in the half wedge type slot pushes up simultaneously to the more shallow end of vertical half wedge type slot, thereby improved the antitheft reliability of nut greatly, after nut was installed, horizontal half wedge type slot and vertically half wedge type slot is locked under the cooperation of spring, steel ball and column type pin respectively made the nut can't counterrotating.Ring-like tensile members is arranged owing to the Ben Bi top of holding in the bolt back-out of nut body is one-body molded in addition, this tensile members has replaced the anti-DNA releaxed circular DNA of prior art, strengthened the tensility of nut greatly, also saved the step that in the annular deep trouth of circle, embeds locking ring during installation, and the existence of tensile members, make the user be convenient to discern the screw terminal of nut and screw out end, thereby improved installation efficiency.

Description of drawings:

Accompanying drawing 1 for the utility model preferred embodiment be unkitted retaining spare the time nut vertically partly cut open schematic representation;

Accompanying drawing 2 is the horizontal sectional structure schematic representation of the nut of the utility model preferred embodiment;

Accompanying drawing 3 is vertical assembly structure sectional view of putting steel ball and cylindricality pin back nut into of the utility model preferred embodiment;

Accompanying drawing 4 is the horizontal assembly structure sectional view of putting steel ball and cylindricality pin back nut into of the utility model preferred embodiment;

Accompanying drawing 5 is the steel ball structural representation of the utility model preferred embodiment;

Accompanying drawing 6 is the cylindrical pin pin structure schematic representation of the utility model preferred embodiment;

Accompanying drawing 7 is the spring structure schematic representation of the utility model preferred embodiment.

Embodiment:

One preferred embodiment is described further the utility model to the utility model below in conjunction with accompanying drawing, sees shown in accompanying drawing 1～accompanying drawing 7:

Present embodiment includes nut body 1, steel ball 2a, column type pin 2b, with spring 5, on the inwall of nut body 1, have a horizontal half wedge type slot 3 and a vertical half wedge type slot (can increase as required or reduce) symmetrically, laterally half wedge type slot 3 along the bolt screw-in direction from shallow to deep, the built-in spring 5 of its darker side, a steel ball 2a (can increase as required) is placed in a more shallow side activity, the movable cylindricality pin 2b (can increase as required) that places in another half wedge type slot 3b, like this, because the effect of spring 5, steel ball 2a is remained and the bolt mating reaction, effectively prevent from when screwing state, to make nut 1 body loosening owing to the darker side of the often vertical half wedge type slot 3b of cylindricality pin 2b produces displacement, lose the locking anti-theft feature, thereby increase the theftproof performance of nut; The bolt of nut body screws out that the Ben Bi top of end is one-body molded a ring-like tensile members 4, the internal diameter of this annular tensile members 4 is identical with the internal diameter size of nut body 1, and form thread pitch and the consistent screw thread of direction with nut body 1 on the inwall, the said structure of tensile members 4 has not only strengthened the tensility of nut greatly but also has guaranteed the smooth back-out of bolt; During construction, earlier spring 5 and steel ball 2a are put in the horizontal half wedge type slot 3a, and cylindricality pin 2b puts in vertical half wedge type slot 3b, again an auxiliary installing stopper is filled in the center hole of nut, screw in bolt then, along with bolt screws in nut 1, auxiliary installing stopper is released the center hole of nut gradually by bolt.

The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection domain of the present utility model.

Claims

1, the structure improvement of tension anti-theft nut, include nut body (1), half wedge type slot, it is characterized in that: the inwall in nut body (1) is provided with at least one a horizontal half wedge type slot (3a) and a vertical half wedge type slot (3b), described horizontal half wedge type slot (3a) and vertical half wedge type slot (3b) are even along the bolt screw-in direction from shallow to deep, wherein laterally the darker side of half wedge type slot (3a) is preset spring (5), steel ball (2a) is placed in a more shallow side activity, vertically presets column type pin (2b) in the half wedge type slot (3b).

2, a kind of tension anti-theft nut of being convenient to install according to claim 1, it is characterized in that: the bolt of nut body screws out that the Ben Bi top of end is one-body molded a ring-like tensile members (4), the internal diameter of this annular tensile members (4) is identical with the internal diameter size of nut body (1), and forms thread pitch and the consistent screw thread of direction with nut body (1) on the inwall.