CN2331784Y - Anti-theft nut - Google Patents
Anti-theft nut Download PDFInfo
- Publication number
- CN2331784Y CN2331784Y CN 98232531 CN98232531U CN2331784Y CN 2331784 Y CN2331784 Y CN 2331784Y CN 98232531 CN98232531 CN 98232531 CN 98232531 U CN98232531 U CN 98232531U CN 2331784 Y CN2331784 Y CN 2331784Y
- Authority
- CN
- China
- Prior art keywords
- inner core
- cylindrical
- overcoat
- theft
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to an anti-theft nut. The shape of an inner core is cylindrical and step-shaped, the upper part of the inner core is provided with a cylindrical lug boss, a cylindrical inner hole is arranged on an outer sleeve, the upper end of the cylindrical inner hole is provided with a chamfer angle, the inner core is positioned in the cylindrical inner hole which is arranged on the outer sleeve, junction surfaces of the outer wall of the cylindrical lug boss of the upper part of the inner core and the inner wall of the cylindrical inner hole of the outer sleeve are in interference fit, and the rest junction surfaces are in gap sliding fit. The utility model has the advantages of reasonable structure, easy processing, standardization of products, large quantity production, high productive efficiency and low cost. Furthermore, the utility model is matched with a clamping nut for protecting pipe sleeves, illegal men have no way to steal, and consequently, a comprehensive anti-theft purpose can be reached.
Description
The utility model relates to a kind of novel anti-theft nut.
With the immediate prior art of the utility model be " burglarproof lock jack panel " (application number: 97242120.3), the interior cover profile of this burglarproof lock jack panel is a stepped shape, put outward and be shaped on the stepped shape endoporus that matches with interior cover profile, the stepped shape outer wall on overcoat upper step shape inwall and interior cover top is an interference fit, all the other are Spielpassung, and the processed complex difficulty is big, the product cost height, and be difficult to make the standardization of products, lots of productionization.This burglarproof lock jack panel is sleeved on the outside of tightening nut in addition, though play certain antitheft effect, because the lawless person adopts the high pulling torque wrench to pull tightening nut, also can destructively remove anti-theft nut, makes it lose antitheft effect.
The purpose of this utility model is to design a kind of novel anti-theft nut, its reasonable in design, and processing technology is simple, can make the standardization of products, lots of productionization, the manufacturing efficiency height, cost is low.Be furnished with pipe box protection tightening nut in addition, the lawless person had no way of doing it, thereby reach comprehensive antitheft purpose.
The utility model design proposal: a kind of novel anti-theft nut, comprise overcoat (1) and inner core (2), the profile of overcoat (1) is identical with the plain nut profile, be shaped on internal thread on the endoporus of inner core (2), and make inner core (2) be positioned at overcoat (1), and overcoat is given prominence in inner core (2) lower end, the profile of inner core (2) is the cylinder stepped shape, its top is cylindrical boss (3), be shaped on cylindrical bore (4) on the overcoat (1), the upper end of cylindrical bore (4) is shaped on chamfering (5), inner core (2) is arranged in cylindrical bore (4), and the junction plane of the outer wall of the cylindrical boss on its top (3) and cylindrical bore (4) inwall is an interference fit, and all the other junction planes are that the gap is slidingly matched.
Described anti-theft screw cap is furnished with pipe box (6), and the internal diameter size of pipe box (6) is greater than tightening nut (7) diagonal-size 0.5-1.0
Mm, outside dimension equals the diagonal-size of anti-theft screw cap, and height is less than tightening nut height 1.0-1.5
Mm
The utility model compared with prior art because the overcoat endoporus is a straight hole, makes its more reasonable structure, and processing technology is simpler, can make the standardization of products, lots of productionization, and the manufacturing efficiency height, cost is low.In addition, be furnished with pipe box protection tightening nut, making the lawless person not have " crack " can take advantage of, and has no way of doing it, antitheft comprehensive, safe.
Fig. 1 is a structure sectional view of the present utility model;
Fig. 2 is the structure sectional view of the utility model pipe box;
Fig. 3 is user mode figure of the present utility model;
1,2,3 embodiment of the present utility model is described in conjunction with the accompanying drawings.
A kind of novel anti-theft nut, comprise overcoat (1) and inner core (2), the profile of overcoat (1) is identical with the plain nut profile, be shaped on internal thread on the endoporus of inner core (2), and make inner core (2) be positioned at overcoat (1), and overcoat is given prominence in inner core (2) lower end, protrude the degree of depth that length approximates chamfering (5) greatly, the profile of inner core (2) is the cylinder stepped shape, its top is cylindrical boss (3), be shaped on cylindrical bore (4) on the overcoat (1), the upper end of cylindrical bore (4) is shaped on chamfering (5), inner core (2) is arranged in cylindrical bore (4), and the junction plane of the outer wall of the cylindrical boss on its top (3) and cylindrical bore (4) inwall is interference fit, and all the other junction planes are that the gap is slidingly matched.Described anti-theft screw cap is furnished with pipe box (6), and the internal diameter size of pipe box (6) is greater than tightening nut (7) diagonal-size 0.5-1.0
Mm, outside dimension equals the diagonal-size of anti-theft screw cap, and height is less than tightening nut height 1.0-1.5
Mm
The chamfering (5) of overcoat (1) cylindrical bore (4) upper end plays double action, and the one, for being press-fitted to provide, interference is pressed into correcting, and the 2nd, when overcoat (1) and the stress relief zone of inner core (2) after throwing off under the also tight power effect.Overcoat (1) and inner core (2) are assembled into one by the interference high pressure, and magnitude of interference is 0.4-0.45
Mm, becoming anti-theft screw cap with specified torsional moment, the height of interference band is directly proportional with torsional moment, i.e. magnitude of interference interference band height ≈ torsional moment, pipe box (3) is an annex, is used to protect tightening nut, is used with anti-theft screw cap.Anti-theft screw cap can use separately, cooperates with pipe box that then effect is better.
During use, earlier pipe box is enclosed within on the tightening nut, makes it to form antitheft guard shield, again anti-theft screw cap is had the end on prominent edge to be installed in the outside of tightening nut, screws with common wrench, when and tight back torsion reach nominal force apart from the time, overcoat and inner core are thrown off, and this moment, inner core locked with tightening nut tightly.Be enclosed within outward under the constraint of the cylindrical convex in inner core top, can only dally, and can not back off around inner core.Tightening nut is covered by pipe box, and pipe box is blocked by the anti-theft screw cap overcoat again, promptly uses any spanner all can't pull down, thereby reaches antitheft purpose comprehensively.Be applicable to industries such as industrial and mineral, electric power, traffic, telecommunication, oil and be used for open-air scyewed joint member in a large number, be specially adapted to locking, the protection, antitheft of electric power transmission iron tower.
Claims (3)
1, a kind of novel anti-theft nut, comprise overcoat (1) and inner core (2), the profile of overcoat (1) is identical with the plain nut profile, be shaped on internal thread on the endoporus of inner core (2), and make inner core (2) be positioned at overcoat (1), and overcoat is given prominence in inner core (2) lower end, it is characterized in that: the profile of inner core (2) is the cylinder stepped shape, its top is cylindrical boss (3), be shaped on cylindrical bore (4) on the overcoat (1), the upper end of cylindrical bore (4) is shaped on chamfering (5), inner core (2) is arranged in cylindrical bore (4), and the junction plane of the outer wall of the cylindrical boss on its top (3) and cylindrical bore (4) inwall is an interference fit, and all the other junction planes are that the gap is slidingly matched.
2, novel anti-theft nut according to claim 1 is characterized in that: described anti-theft screw cap is furnished with pipe box (6).
3, novel anti-theft nut according to claim 2 is characterized in that: the internal diameter size of pipe box (6) is greater than tightening nut (7) diagonal-size 0.5-1.0
Mm, outside dimension equals the diagonal-size of anti-theft screw cap, and height is less than tightening nut height 1.0-1.5
Mm
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232531 CN2331784Y (en) | 1998-03-06 | 1998-03-06 | Anti-theft nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232531 CN2331784Y (en) | 1998-03-06 | 1998-03-06 | Anti-theft nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2331784Y true CN2331784Y (en) | 1999-08-04 |
Family
ID=33981448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98232531 Expired - Fee Related CN2331784Y (en) | 1998-03-06 | 1998-03-06 | Anti-theft nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2331784Y (en) |
-
1998
- 1998-03-06 CN CN 98232531 patent/CN2331784Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |