CN2793400Y

CN2793400Y - Safety hard and toughened nut with micrarc convex taper wall

Info

Publication number: CN2793400Y
Application number: CN 200420057220
Authority: CN
Inventors: 徐尚仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-14
Filing date: 2004-11-14
Publication date: 2006-07-05
Anticipated expiration: 2014-11-14

Abstract

The utility model discloses a hard and tough anti-theft screw nut with a micro-cambered concave taper wall, which aims to provide the technology of the utility model having the advantages of simple structure and reliable theft prevention. The utility model comprises a nut body (1) of the anti-theft screw nut with a micro-cambered concave taper wall, a wall bottom (2) of a nut body outer wall, a wall top (3) of the nut body outer wall, a nut top (4), an inner round through hole (5) of the nut body and an inner hole wall screw thread (6) of the nut body, wherein a micro-cambered concave taper wall (7) is arranged at the section between the wall bottom (2) of the nut body outer wall and the wall top (3) of the nut body outer wall. After the utility model is matched and assembled with a hard and tough anti-theft screw with a micro-cambered concave taper wall and a special spanner for the anti-theft screw in a fastening mode, and all the objects need to be fastened can achieve the aim of theft prevention. The utility model is widely suitable for carrying out the theft prevention, fastening and installation for facilities and the components of the facilities which are fixedly installed outdoors and easily stolen.

Description

Hard and the tough anti-theft screw nut of differential of the arc shape recessed taper wall

One, technical field

The utility model is a kind of fastening piece that the equipment of installing and fixing is used that relates to, and more particularly, it is a kind of anti-theft screw nut.

Two, background technique

Known fastener screw mother, its parent outer wall is by the alternate formation with the rib plane of rib of respective numbers, conventional general various spanner or sleeve its screw thread of just advancing and retreat, even the non-standard screw mother of indivisible distortion is arranged, also as long as with hard tooth pipe tongs or make utmost point simple hand instrument its screw thread of just advancing and retreat by oneself, now equipment such as communal facility is fixedly installed in the increasing of outdoor easy robber location, and thief promptly utilizes the non-anti-theft deficiency of this tightening nut, steal and sell illegal activity thereby carry out it, it has caused harm and destruction in various degree to society and people.

Three, summary of the invention

The purpose of this utility model is for overcoming deficiency of the prior art, provide a kind of simple in structure, cheap, adorning, tear open conveniently, antitheft reliable the utility model technology.

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

The utility model is made up of round tube hole 5 and parent inner hole wall screw thread 6 at the bottom of the hard and tough anti-theft screw nut parent 1 of differential of the arc shape recessed taper wall of linking body structure, the parent outer wall wall 2, in the parent outer wall wall top 3, female top 4, parent respectively, at the bottom of the parent outer wall wall 2 between the parent outer wall wall top 3 section be provided with differential of the arc shape recessed taper wall 7.

2 diameters are greater than the diameter on parent outer wall wall top 3 at the bottom of the described parent outer wall wall; The utility model nail system adopts the high-quality steel to increase the brinelling fire through heat treatment and is processed into, and its hardness is stiffer than the hardness of the hard tooth of pipe tongs, but is softer than the hardness of the hard tooth of excircle tapered wall special spanner for safety screw.

The beneficial effects of the utility model are:

1, the parent outer wall adopts differential of the arc shape recessed taper wall construction, and it can make all conventional theft manual tools all can shorten it to the utmost and touch wall supporting point length, thereby has strengthened the effect of anti-back screw thread;

2, parent adopts the high-quality steel to increase the brinelling fire through heat treatment to be processed into. and make hard tooth such as pipe tongs gnaw card and do not go into to follow closely external wall and produce slip, make its screw thread that do not fall back, thereby reach antitheft purpose;

3, the utility model is furnished with the special Patent right excircle tapered wall special spanner for safety screw that has separately, the hard tooth hardness of this special spanner is stiffer than the hardness of the utility model parent outer wall, when rotation the utility model, the hard tooth of this special spanner just can be gnawed easily and snap in the utility model parent outer wall, can be antitheft thereby all fastened things all can be reached screw, withdraw from the purpose that can remove;

4, the utility model is simple in structure, and is cheap, adorns, tears open conveniently, antitheft reliable, obvious social benefit.

Four, description of drawings

Accompanying drawing is the utility model structural representation, and wherein 1 is the hard and tough anti-theft screw nut parent of differential of the arc shape recessed taper wall, 2 be parent outer wall wall at the bottom of, 3 is parent outer wall wall top, and 4 is female top, and 5 is round tube hole in the parent, 6 is parent inner hole wall screw thread, and 7 is a differential of the arc shape recessed taper ancient piece of jade, round, flat and with a hole in its centre.

Five, embodiment

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

Be respectively equipped with at the bottom of the parent outer wall wall of linking body structure 2 on the hard and tough anti-theft screw nut parent 1 of differential of the arc shape recessed taper wall in the accompanying drawings, round tube hole 5, parent inner hole wall screw thread 6 and differential of the arc shape recessed taper wall 7 in the parent outer wall wall top 3, female top 4, parent; The utility model nail body adopts the high-quality steel to increase the brinelling fire through heat treatment and is processed into, and its hardness is stiffer than the hard tooth hardness of pipe tongs, but is softer than the hardness of the hard tooth of excircle tapered wall special spanner for safety screw;

The utility model is when installing and using, earlier the hard and tough anti-theft screw of differential of the arc shape recessed taper wall and the utility model string are packed in the fixed hole of relevant device or parts, again with one or two excircle tapered wall special spanner for safety screw continue it is rotated to complete fastening getting final product; When it meet to need is removed, if this special spanner through just, after the back side is inverted, during again by contrary clockwise direction switching, just can withdraw from screw thread trippingly, to screw energy antitheft thereby reach, and withdraws from the purpose that can remove.

Claims

1, the hard and tough anti-theft screw nut of a kind of differential of the arc shape recessed taper wall, comprise round tube hole (5) and parent inner hole wall screw thread (6) in (2) at the bottom of differential of the arc shape recessed taper wall anti-theft screw nut parent (1), the parent outer wall wall, parent outer wall wall top (3), female top (4), the parent, it is characterized in that: between (2) at the bottom of the parent outer wall wall to parent outer wall wall top (3), section be provided with differential of the arc shape recessed taper wall (7).

2, the hard and tough anti-theft screw nut of differential of the arc shape recessed taper wall according to claim 1 is characterized in that: (2) diameter is greater than the diameter on parent outer wall wall top (3) at the bottom of the parent outer wall wall.