CN2146601Y - Theft-proof cap of screw - Google Patents
Theft-proof cap of screw Download PDFInfo
- Publication number
- CN2146601Y CN2146601Y CN 92243588 CN92243588U CN2146601Y CN 2146601 Y CN2146601 Y CN 2146601Y CN 92243588 CN92243588 CN 92243588 CN 92243588 U CN92243588 U CN 92243588U CN 2146601 Y CN2146601 Y CN 2146601Y
- Authority
- CN
- China
- Prior art keywords
- screw cap
- utility
- model
- theft
- shape
- 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.)
- Ceased
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- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to a theftproof screw cap which relates to the structural improvement of a product of a fastening piece in the class of hardware. The utility model comprises a screw cap body, a threaded hole and internal threads. The utility model is characterized in that the bottom side of the screw cap body which is in the shape of a circular table is cut into the shape of a polygon with circular beads and is preferred to be cut into a pentagon with the circular beads. The theftproof screw cap nut overcomes the defect that the existing like products can be screwed just by general tools, and thus, the purposes of guaranteeing the safe use of electromechanical equipment and enhancing theftproof performance are realized.
Description
The utility model relates to a kind of improvement of five metals class fastener constructions.
The most frequently used Fastener products is traditional hexagon nut in the electromechanical industries at present, because the nut body of hexagon nut is a hexagon, as long as use general tool just can turn.Therefore in various machinery, electric power facility, often be disassembled, steal phenomenon, cause immeasurable loss for collective, country.
Based on above-mentioned existing problems, the purpose of this utility model is to provide a kind of anti-theft screw cap, makes it adopt common instrument to turn.
Described anti-theft screw cap comprises nut body, screw and internal thread, it is characterized in that nut body is a frustoconic shape, and it is polygon-shaped that frustoconic shape nut body bottom side is whittled into fillet, has the special tool that encloses shape in identical and turns so that adopt.
The utility model has overcome the defective that existing like product adopts general tool just can turn, and guarantees the electromechanical equipment safe handling and strengthens antitheft purpose thereby reach.
Below in conjunction with Figure of description, the utility model is further described, and provides embodiment.
Fig. 1 is an anti-theft screw cap plan structure schematic representation;
Fig. 2 is an A-A sectional structure schematic representation;
Fig. 3 is a B-B sectional structure schematic representation.
The nut body 1 of this anti-theft screw cap is a frustoconic shape, and nut body 1 center has screw 2, is provided with internal thread 3 in the screw 2, and it is polygon-shaped that nut body 1 bottom side is whittled into fillet, is preferably the fillet pentagon.Because axially the parallel face or the line of the no any symmetry of periphery can supply tool holding, have broken the routine that common tool clamping two relative parallel surfaces or line are operated.
Claims (2)
1, a kind of anti-theft screw cap comprises nut body (1), screw (2) and internal thread (3), it is characterized in that nut body (1) is frustoconic shape, and it is polygon-shaped that frustoconic shape nut body (1) bottom side is whittled into fillet.
2, a kind of anti-theft screw cap as claimed in claim 1 is characterized in that frustoconic shape nut body (1) bottom side is whittled into fillet pentagon shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92243588 CN2146601Y (en) | 1992-12-08 | 1992-12-08 | Theft-proof cap of screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92243588 CN2146601Y (en) | 1992-12-08 | 1992-12-08 | Theft-proof cap of screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2146601Y true CN2146601Y (en) | 1993-11-17 |
Family
ID=33783086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92243588 Ceased CN2146601Y (en) | 1992-12-08 | 1992-12-08 | Theft-proof cap of screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2146601Y (en) |
-
1992
- 1992-12-08 CN CN 92243588 patent/CN2146601Y/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 19990326 Decision number of declaring invalidation: 1305 |