CN2447560Y

CN2447560Y - Anti-theft locknut

Info

Publication number: CN2447560Y
Application number: CN 00230944
Authority: CN
Inventors: 罗广科; 刘崇林; 刘惊一
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-25
Filing date: 2000-09-25
Publication date: 2001-09-12
Anticipated expiration: 2010-09-25

Abstract

The utility model relates to a double wire sleeve type theftproof locknut, which is composed of six square steel sleeves, double convex wire sleeves and pins. The utility model is characterized in that circular holes of the six square steel sleeves are inside respectively provided with a convex wire sleeve, the contacting point of the outer wall of the wire sleeve and the inner wall of the six square steel sleeve holes is provided with n pin holes, and the pins are arranged in the pin holes. Compared with the existing screw cap, the utility model has the same use method and the coordinative fastening force, after fastening, half section of the pins are cut, the steel sleeves only can run idle and can not drive the wire sleeves to rotate, the goal of the anti-loosing and the theftproof functions is achieved, and the puzzle that the screw cap is easy to loose, break away and steal in the prior art is solved.

Description

Double silk-sleeve type anti-loose anti-theft nut

The utility model provides a kind of mechanical parts, is a kind of double silk-sleeve type anti-loose anti-theft nut specifically.

At present, widely used nut on the market, its profile is a hexagonal shaped, and inwall is a screw thread, and the deficiency of existence is: easily loosening in the process of using, even come off; Easy stolen person lays down, and therefore outdoor machinery is caused very big hidden danger, often causes the generation of mechanical accident.

Goal of the invention of the present utility model is to overcome the above-mentioned deficiency of prior art and a kind of existing anti-loose anti-theft function is provided, and possesses the double silk-sleeve type anti-loose anti-theft nut of the equal fastening force of existing nut again.

The technical solution of the utility model is: in a profile is the circular hole of hexagonal steel bushing, respectively adorn the silk braid of side band boss one by one from both sides, two silk braids form an I-shaped lenticular structure to adorning the back in six square steel cover; There is n pin-and-hole silk braid outer wall and six square steel trepanning inwall contacting points, and this pin-and-hole one side of something is at the silk braid outer wall, and is half of at six square steel cover inwall, and pin is arranged in the pin-and-hole.

Feature of the present utility model is that also two silk braid length sum L should be greater than the length of six square steel covers.

The said n of a utility model pin-and-hole and pin, wherein n is 1-6, the number of n can be selected according to the needs of impacting force.

The said pin of the utility model, its shear strength is not more than nut intensity.

Using method of the present utility model is: the using method of the anti-loose anti-theft nut that assembles by plain nut rotated on the required fastening device, when rotating force during greater than pin intensity, following convex silk braid at first cuts the interior lower half portion pin of six square steel cover, six square steel covers continue be with the rotation of upper half part silk braid, when rotating force during greater than upper half part pin intensity, the convex-shaped silk braid cuts this part pin equally, this moment, six square steel covers can only dally in the I-shaped groove that silk braid forms up and down, can't drive silk braid rotation in two.

The utility model is simple in structure, identical with existing nut using method have equal fastening force again, and twice fastening, fastening after, commonsense method can't become flexible (except that special destruction methods as electricity, oxygen welding), solved nut Yi Songyi robber's problem in the prior art.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is six a square steel cover parts drawing;

Fig. 4 is the silk braid parts drawing;

Fig. 5 is the pin parts drawing.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Among Fig. 1, it is one I-shaped that silk braid 2, two silk braids 2 that a pair of band boss is housed in the six square steel cover 1 are combined to form in six square steel cover, and two silk braid length sum L are greater than the length of six square steel cover 1.

Among Fig. 2, six square steel overlap 1 inwall and there are six pin-and-holes 3 silk braid outer wall contacting point, and one side of something of pin-and-hole 3 is at silk braid 2 outer walls, and one side of something overlaps 1 inwall at six square steel, and pin 4 is arranged in the pin-and-hole 3.

Among Fig. 3, in the six square steel cover 1 half of pin-and-hole 3 is arranged.

Among Fig. 4, screw thread 5 is arranged on the silk braid 2.

Among Fig. 5,4 is pin.

Claims

1, a kind of double silk-sleeve type anti-loose anti-theft nut is characterized in that: in profile is hexagonal steel bushing (1) circular hole, respectively adorn the silk braid of side band boss (2) one by one from both sides; There is n pin-and-hole (3) silk braid (2) outer wall and inwall contacting point, six square steel cover (1) holes, and this pin-and-hole one side of something is at silk braid (2) outer wall, and is half of at six square steel cover (1) inwalls; Pin (4) is arranged in the pin-and-hole (3).

2, nut according to claim 1 is characterized in that two silk braids (2) length sum L should be greater than the length of six square steel covers.

3, nut according to claim 1 is characterized in that a said n pin-and-hole (3), pin (4), and wherein n is 1-6.

4, nut according to claim 1 is characterized in that said pin (4), and its shear strength is not more than nut intensity.