CN201358999Y - Hamstring-type antitheft screw - Google Patents
Hamstring-type antitheft screw Download PDFInfo
- Publication number
- CN201358999Y CN201358999Y CNU2009200794049U CN200920079404U CN201358999Y CN 201358999 Y CN201358999 Y CN 201358999Y CN U2009200794049 U CNU2009200794049 U CN U2009200794049U CN 200920079404 U CN200920079404 U CN 200920079404U CN 201358999 Y CN201358999 Y CN 201358999Y
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- CN
- China
- Prior art keywords
- cap
- screw
- flat
- groove
- muscle
- 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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Abstract
The utility model relates to hardware, in particular to a hamstring-type antitheft screw. The antitheft screw consists of a groove cap, a safety string, a flat cap and a screw stem, wherein the upper end of the screw stem is provided with the flat-cylinder flat cap which is integrated with the screw stem; the upper surface of the flat cap is the smooth flat; the groove cap is arranged right above the flat cap; the upper surface of the groove cap is provided with a screw driver groove; the diameter of the safety string is 1/3-1/5 of the diameter of the screw thread; the upper end of the safety string is welded with the lower bottom surface of the groove cap, and the lower end thereof is welded with the upper end surface of the flat cap; and the groove cap, the safety string, the flat cap and the screw stem are arranged in the same axle center. As the antitheft screw can not be disassembled after being screwed tightly, the antitheft screw can be used for a specific occasion with higher antitheft requirement, furthermore, compared with the existing common screw, the safety due to connection can be improved greatly.
Description
Technical field
The utility model relates to a kind of hardware, particularly relates to a kind of disconnected muscle formula anti-theft screw.
Background technique
The head end of conventional screw generally has straight groove, cross recess or plum blossom groove.Be placed in one with instruments such as screw-drivers, rotary screw is carried out fastening or spin-up.Make screw have more versatility like this, made things convenient for user's use.But in some specific occasion, require screw to screw after, must not arbitrarily dismantle, to prevent article lost in the fastened device or stolen, existing screw can't satisfy this requirement.
The model utility content
The utility model provides a kind of disconnected muscle formula anti-theft screw that can't be disassembled after screwing on for solving the deficiencies in the prior art.
The scheme that solves the utility model technical problem is: disconnected muscle formula anti-theft screw is made of groove cap, insurance muscle, flat cap and screw rod.The upper end of screw rod is to be the flat cap of holistic oblate cylindricality with screw rod, and the upper surface of flat cap is a smooth flat.The groove cap be in flat cap directly over, the upper surface of groove cap has driver flutes.The insurance muscle is cylindrical, and the diameter of insurance muscle is the 1/3-1/5 of screw diameter.The bottom surface welding of the upper end of insurance muscle and groove cap, the upper-end surface welding of the lower end of insurance muscle and flat cap.Groove cap, insurance muscle, flat cap, the screw coaxial heart.
After adopting the utility model to screw member, continue firmly to turn clockwise screw-driver, being applied to moment of torsion on the groove cap will insure muscle and twist into two parts, at this moment, staying on the member is screw rod and the ganoid flat cap that has cylindrical insurance breaking of muscle and tendon head, adopt existing screw-driver screw rod to be rotated counterclockwise to be very difficulty again.
Adopt such scheme, can reach following effect:
Owing to can't be disassembled after disconnected muscle formula anti-theft screw is screwed, can be used for the specific occasion of having relatively high expectations to antitheft, compare with existing plain screw, the Security that is connected structure is improved greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1. groove cap 2. insures muscle 3. flat cap 4. screw rods
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Disconnected muscle formula anti-theft screw is made of groove cap 1, insurance muscle 2, flat cap 3 and screw rod 4.The upper end of screw rod 4 is to be the flat cap 3 of holistic oblate cylindricality with screw rod 4, and the upper surface of flat cap 3 is a smooth flat.Groove cap 1 be in flat cap 3 directly over, the upper surface of groove cap 1 has driver flutes.Insurance muscle 2 is cylindrical, and the diameter of insurance muscle 2 is 1/4 of screw rod 4 diameters.The bottom surface welding of the upper end of insurance muscle 2 and groove cap 1, the upper-end surface welding of the lower end of insurance muscle 2 and flat cap 3.Groove cap 1, insurance muscle 2, flat cap 3, screw rod 4 concentrics.After adopting the utility model to screw member, continue firmly to turn clockwise screw-driver, being applied to moment of torsion on the groove cap 1 will insure muscle 2 and twist into two parts, at this moment, staying on the member is screw rod and the ganoid flat cap 3 that has cylindrical insurance muscle 2 broken ends, adopt existing screw-driver screw rod to be rotated counterclockwise to be very difficulty again.
Claims (1)
1. a disconnected muscle formula anti-theft screw is made of groove cap, insurance muscle, flat cap and screw rod, it is characterized in that: the upper end of screw rod is to be the flat cap of holistic oblate cylindricality with screw rod, the upper surface of flat cap is a smooth flat, the groove cap be in flat cap directly over, the upper surface of groove cap has driver flutes, the insurance muscle is cylindrical, the diameter of insurance muscle is the 1/3-1/5 of screw diameter, the bottom surface welding of the upper end of insurance muscle and groove cap, the upper-end surface welding of the lower end of insurance muscle and flat cap, groove cap, insurance muscle, flat cap, the screw coaxial heart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200794049U CN201358999Y (en) | 2009-03-06 | 2009-03-06 | Hamstring-type antitheft screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200794049U CN201358999Y (en) | 2009-03-06 | 2009-03-06 | Hamstring-type antitheft screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358999Y true CN201358999Y (en) | 2009-12-09 |
Family
ID=41424762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200794049U Expired - Fee Related CN201358999Y (en) | 2009-03-06 | 2009-03-06 | Hamstring-type antitheft screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358999Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775469A (en) * | 2012-10-23 | 2014-05-07 | 浙江喜乐嘉电器有限公司 | Anti-theft structure of fastener and recovery tool thereof |
-
2009
- 2009-03-06 CN CNU2009200794049U patent/CN201358999Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775469A (en) * | 2012-10-23 | 2014-05-07 | 浙江喜乐嘉电器有限公司 | Anti-theft structure of fastener and recovery tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20100306 |