CN202031957U

CN202031957U - Jam antitheft nut

Info

Publication number: CN202031957U
Application number: CN2011200876101U
Authority: CN
Inventors: 陈四甫; 陈明举; 胡永涛; 赵磊成
Original assignee: XUCHANG SIDA ELECTRIC POWER EQUIPMENT CO Ltd
Current assignee: XUCHANG SIDA ELECTRIC POWER EQUIPMENT CO Ltd
Priority date: 2011-03-30
Filing date: 2011-03-30
Publication date: 2011-11-09
Anticipated expiration: 2021-03-30

Abstract

The utility model relates to a jam antitheft nut, which comprises a nut body and a protective sheath. Grooves which are shallow gradually along a screwing direction are arranged on the inner side of the nut body and a steel ball and a spring are arranged inside the grooves, or grooves are arranged inside the nut body and a taper block and a spring are arranged inside the grooves, and the protective sheath is arranged outside the nut body. The jam antitheft nut is characterized by further comprising a pin, a vertically run-through pin hole is arranged on the wall of the nut body, a large hollow cylindrical structure matched with the outer side of the nut body is arranged on the inner upper portion of the protective sheath, an inward boss is arranged on the lower portion of the protective sheath and provided with a boss pin hole corresponding to the pin hole, and the pin is provided with a structure limited in the pin hole and the boss pin hole. The jam antitheft nut has fine screwing effect and not easy to be loosed during use.

Description

Lock the formula anti-theft nut

Technical field

The utility model relates to nut, specifically relates to a kind of anti-theft nut, and it is widely used in the facilities such as electric power, highway.

Background technique

At present, related anti-theft nut is a kind of to have in the nut body inboard along tightening direction groove from depth to shallow, built-in steel ball of groove and spring, and the outside has protective coat; Another kind has recessed poor in nut body inside, be placed with tapering piece and spring in the groove, and the outside has protective coat; Generally is the bonding weak effect of tightening that has in prior art at such nut body and protective coat, and the shortcoming of easily becoming flexible during use influences the normal use of this anti-theft nut.

Summary of the invention

The purpose of this utility model is exactly at above-mentioned shortcoming, provide a kind of tighten effective, be difficult for loosening anti-theft nut when using---lock the formula anti-theft nut.

The purpose of this utility model is achieved in that and locks the formula anti-theft nut, comprises nut body and protective coat, have the edge in the nut body inboard and tighten direction groove from depth to shallow, and built-in steel ball of groove and spring, the outside has protective coat; It is characterized in that: further comprising a pin, have the pin-and-hole that runs through up and down on the described nut body wall; Described protective coat outside has the big hollow cylinder structure that internal upper part has identical nut body outside, and the bottom has inside boss, has the boss pin-and-hole with the pin-and-hole correspondence on the boss; Described pin has the structure of linchpin at pin-and-hole and boss pin-and-hole.

Or lock the formula anti-theft nut, and comprise nut body and protective coat, recessed being pickled with grains or in wine arranged in nut body inside, be placed with tapering piece and spring in the groove, the outside has protective coat; It is characterized in that: further comprising a pin, have the pin-and-hole that runs through up and down on the described nut body wall; Described protective coat outside has the big hollow cylinder structure that internal upper part has identical nut body outside, and the bottom has inside boss, has the boss pin-and-hole with the pin-and-hole correspondence on the boss; Described pin has the structure of linchpin at pin-and-hole and boss pin-and-hole.

The beneficial effects of the utility model are: the formula that the locks anti-theft nut of this spline structure have tighten effective, be difficult for loosening advantage when using.

Description of drawings

Fig. 1 is the structural representation that first kind of situation of the utility model locks the formula anti-theft nut.

Wherein: 1, nut body 2, protective coat 3, pin 4, boss 5, pin-and-hole 6, boss pin-and-hole

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Figure 1, lock the formula anti-theft nut, comprise nut body 1 and protective coat 2, have the edge in nut body 1 inboard and tighten direction groove from depth to shallow, built-in steel ball of groove and spring, the outside has protective coat 2; It is characterized in that: further comprising a pin 3, have the pin-and-hole 3 that runs through up and down on described nut body 1 wall; Described protective coat 2 outsides have the big hollow cylinder structure that internal upper part has identical nut body 1 outside, and the bottom has inside boss 4, have the boss pin-and-hole 6 with the pin-and-hole correspondence on the boss 4; Described pin 5 has the structure of linchpin at pin-and-hole 5 and boss pin-and-hole 6.

Second kind of situation is similar with first kind of situation, is readily appreciated that, repeats no more.

When this anti-theft nut is installed, nut body is placed the big hollow cylinder inside configuration of protective coat, pin 3 passes pin-and-hole 5 and boss pin-and-hole 6; tight on can twisting by outside prism, finish, extract pin; protective coat 2 protection nut bodies are unlikely to unload, and play the purpose of protection.

Claims

1. lock the formula anti-theft nut, comprise nut body and protective coat, have the edge in the nut body inboard and tighten direction groove from depth to shallow, built-in steel ball of groove and spring, the outside has protective coat; It is characterized in that: further comprising a pin, have the pin-and-hole that runs through up and down on the described nut body wall; Described protective coat outside has the big hollow cylinder structure that internal upper part has identical nut body outside, and the bottom has inside boss, has the boss pin-and-hole with the pin-and-hole correspondence on the boss; Described pin has the structure of linchpin at pin-and-hole and boss pin-and-hole.

2. lock the formula anti-theft nut, comprise nut body and protective coat, recessed being pickled with grains or in wine arranged in nut body inside, be placed with tapering piece and spring in the groove, the outside has protective coat; It is characterized in that: further comprising a pin, have the pin-and-hole that runs through up and down on the described nut body wall; Described protective coat outside has the big hollow cylinder structure that internal upper part has identical nut body outside, and the bottom has inside boss, has the boss pin-and-hole with the pin-and-hole correspondence on the boss; Described pin has the structure of linchpin at pin-and-hole and boss pin-and-hole.