CN2924136Y

CN2924136Y - Anti-theft nut

Info

Publication number: CN2924136Y
Application number: CN 200620084240
Authority: CN
Inventors: 隗俊; 程国忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-15
Filing date: 2006-05-15
Publication date: 2007-07-18
Anticipated expiration: 2016-05-15

Abstract

The utility model provides a theftproof nut belonging to the fastener technical field. The utility model takes the nut body as the body and is characterized in that the nut body takes the shape of a cylinder or a truncated cone structure; ladder holes are arranged along the central axes of the nut body; the hole with larger diameter takes the shape of a polygon; the hole with smaller hole is a thread hole with internal thread. The theftproof nut is assembled with a screw by the internal thread of the thread hole; a gap between the screw and the polygon hole with large diameter is formed to arrange a special spanner, in this way, the non-special tool can be prevented for disassembly and assembly, thus the safe and theftproof effect to protect the basic facilities is reached; the utility model can be widely applied to the wild facilities in the fields of traffic, electric power, communication and so on, has an internal and external multi-protection function, and has an obvious theftproof effect.

Description

A kind of anti-theft nut

(1) technical field

The utility model relates to a kind of clamp structure, and the anti-theft nut with the anti-dismounting effect of having of fastening screw is used in specifically a kind of and screw rod collocation.

(2) background technique

Current, a lot of Infrastructure in fields such as expressway and field electric, communication still are in the state of can't in good time supervising, therefore Infrastructure suffer lawless person's theft and destruction often, its consequence that causes is not only the very big harm to country and society, brings in various degree influence also for simultaneously the people's economic development and life safety.This social phenomenon except the law enforcement dynamics that strengthens law enforcement agency, by technological improvement, is strengthened the autoprotection of field field facilities such as traffic, electric power and communication, also is effectively to prevent and reduce one of measure of unlawful infringement.

(3) summary of the invention

Technical assignment of the present utility model is at the deficiencies in the prior art, and a kind of reasonable in design, simple in structure, good anti-theft effect is provided, and adopts general tool to turn, and needs the anti-theft nut of specialist tools.

The technological scheme that its technical problem that solves the utility model adopts is:

This anti-theft nut; its agent structure is a nut body; characteristics are the cylindrical or frustoconic shape structures of nut body; the frustoconic shape structure anti-theft effect than cylindrical structural to a certain extent is good; central axis along nut body offers shoulder hole; the hole that diameter is bigger is a polygonal hole; the less hole of diameter is the tapped hole that has internal thread; this anti-theft nut matches with screw rod by the internal thread of tapped hole; between the bigger polygonal hole of screw rod and diameter, form a gap of laying special-purpose loading and unloading spanner; can prevent non-special tool dismounting fully like this; thereby reach the effect of the safe antitheft that takes good care of infrastructure; can be widely used in traffic; electric power; the field facility in fields such as communication is in having; outer multiple-protection function, anti-theft effect is remarkable.

Above-mentioned anti-theft nut, the limit number of its polygonal hole is more than five limits, is advisable with seven limits.

A kind of anti-theft nut of the present utility model compared with prior art, the beneficial effect that is produced is:

1) reasonable in design, simple in structure, manufacturing process and operation and prior art are similar;

2) good anti-theft effect can only can screw with special special spanner or pine is unloaded.

(4) description of drawings

Accompanying drawing 1 is looked cross-sectional view for master of the present utility model;

Accompanying drawing 2 is the plan structure schematic representation of Fig. 1;

Accompanying drawing 3 is the cooperating structure schematic representation of model utility and screw rod.

Among the figure, 1-nut body, 2-polygonal hole, 3-tapped hole, 4-screw rod.

(5) embodiment

Below in conjunction with explaining below 1,2,3 pairs of a kind of anti-theft nuts works of the present utility model of accompanying drawing.

Shown in the accompanying

drawing

1,2,3, a kind of anti-theft nut of the present utility model, its structure is to be body with nut body 1, nut body 1 is made the frustoconic shape structure, central axis along nut body 1 offers shoulder hole, and the hole that diameter is bigger is a polygonal hole 2, and the less hole of diameter is the tapped hole 3 that has internal thread, polygonal hole 2 and tapped hole 3 concentrics, polygonal hole 2 is interior Heptagon.

This anti-theft nut matches with screw rod 4 by the internal thread of tapped hole 3; between the bigger polygonal hole 2 of screw rod 4 and diameter, form a gap of laying special-purpose loading and unloading spanner; can prevent non-special tool dismounting fully like this, thereby reach the effect of the safe antitheft that takes good care of infrastructure.

Its processing and fabricating of a kind of anti-theft nut of the present utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.The manufacturing process of special-purpose loading and unloading spanner is the process for machining of prior art, and its size and structural feature are decided according to the size of polygonal hole and structural feature.

Except that the described technical characteristics of specification, be the known technology of those skilled in the art.

Claims

1, a kind of anti-theft nut comprises nut body, it is characterized in that, the cylindrical or frustoconic shape structure of nut body offers shoulder hole along the central axis of nut body, and the hole that diameter is bigger is a polygonal hole, and the less hole of diameter is the tapped hole that has internal thread.

2, a kind of anti-theft nut according to claim 1 is characterized in that, the limit number of polygonal hole is more than five limits.

3, a kind of anti-theft nut according to claim 2 is characterized in that, the limit number of polygonal hole is seven limits.