CN201982458U - Anti-theft screw - Google Patents
Anti-theft screw Download PDFInfo
- Publication number
- CN201982458U CN201982458U CN2011200128859U CN201120012885U CN201982458U CN 201982458 U CN201982458 U CN 201982458U CN 2011200128859 U CN2011200128859 U CN 2011200128859U CN 201120012885 U CN201120012885 U CN 201120012885U CN 201982458 U CN201982458 U CN 201982458U
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- CN
- China
- Prior art keywords
- screw
- head
- theft
- spherical crown
- theft screw
- 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
Links
- 210000003371 toe Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 3
- 210000003811 finger Anatomy 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses an anti-theft screw, belonging to a fastener. The anti-theft screw comprises a screw part with external threads and a head part connected to the upper end of the screw part. The head part comprises a spherical crown part and a screw head connected with the upper end of the spherical crown part by a thin neck. The screw head can be one of an internal hexagonal head, an external hexagonal head, a square head, a cylindrical head and a semicircular head. The diameter of the thin neck in the thinnest position can be Phi 0.5-Phi 1. The anti-theft screw can be screwed down by using a tool so as to fasten a connected element, besides, the screw cannot be or is hard to be dismounted after being fastened and installed and cannot be dismounted even by using the initial tool, so the anti-theft screw has good anti-theft function and enables the connected element not to be dismounted by bad people. The anti-theft screw can be widely used for connection and fastening of elements.
Description
Technical field
The utility model belongs to the fastening connection piece technical field, more particularly relates to the design improvement of anti-theft screw.
Background technique
Traditional fastening screw trip bolt comprises the head that has externally threaded screw part and be connected the screw part upper end.Head or be hexagon socket head, outer-hexagonal head, square toes, socket cap or cup head is on it or have a word or a cross recess.During use, tighten or unclamp with spanner or spiral shell cutter and get final product.
But this screw both can be fastening with instrument, also can unclamp with same instrument, easily is removed, thereby do not have anti-theft feature.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned shortcoming and defect, and a kind of anti-theft screw is provided.It can be tightened by instrument, makes connected parts fastening.And, after the in a single day fastened and installation of this screw, just can't or be difficult to be removed, even use former instrument also can't pull down.Thereby have good anti-theft feature, connected parts are avoided by bad empty disassembling.
In order to achieve the above object, the utility model comprises the head that has externally threaded screw part and be connected the screw part upper end.Head comprises spherical crown part and the screw head that is connected with spherical crown part upper end with thin neck.
Screw head can be one of hexagon socket head, outer-hexagonal head, square toes, socket cap or cup head.The thin neck diameter at thin place can be φ 0.5-φ 1.
During use, with instrument this anti-theft screw is tightened earlier, connected parts are fastened to suitably.With special tool or general tool the screw head that is connected with spherical crown part upper end of this anti-theft screw is broken off with the fingers and thumb from thin neck then and broken and take off.Only surplus semicircle spherical crown part.Because should the semicircle spherical crown part both do not had straight groove and do not had cross recess yet, so can't pull down, even use former instrument also can't pull down.Thereby have good anti-theft feature, connected parts are avoided by bad empty disassembling.
Task of the present utility model comes to this and finishes.
The utility model anti-theft screw can be tightened by instrument, makes connected parts fastening.And, after the in a single day fastened and installation of this screw, just can't or be difficult to be removed, even use former instrument also can't pull down.Thereby have good anti-theft feature, connected parts are avoided by bad empty disassembling.It can be widely used in the connection of parts fastening in.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is used to connect the loam cake of two-way amplifier and the schematic representation of drain pan for the utility model.
Embodiment
Embodiment 1.A kind of anti-theft screw, as shown in Figure 1.It comprises screw part 2 that has outside thread 1 and the head that is connected screw part 2 upper ends.Head comprises spherical crown part 3 and the screw head 5 that is connected with spherical crown part 3 upper ends with thin neck 4.
Screw head 5 is the outer-hexagonal head.The thin neck 4 diameter at thin place is φ 0.5.
Consult Fig. 2.During use, with instrument this anti-theft screw is tightened earlier, the loam cake 6 of connected two-way amplifier and drain pan 7 are fastened to suitably.With special tool or general tool the outer-hexagonal head that is connected with spherical crown part 3 upper ends of this anti-theft screw is broken off with the fingers and thumb disconnected and taken off from thin neck 4 then.Only surplus semicircle spherical crown part 3.There was not cross recess because should semicircle spherical crown part 3 have both had straight groove yet, thus can't pull down, even use former instrument also can't pull down.Thereby have good anti-theft feature, connected parts are avoided by bad empty disassembling.
Embodiment's 1 anti-theft screw can be tightened by instrument, makes connected parts fastening.And, after the in a single day fastened and installation of this screw, just can't or be difficult to be removed, even use former instrument also can't pull down.Thereby have good anti-theft feature, connected parts are avoided by bad empty disassembling.It can be widely used in the connection of parts fastening in.
Claims (3)
1. an anti-theft screw comprises the head that has externally threaded screw part and be connected the screw part upper end, it is characterized in that head comprises spherical crown part and the screw head that is connected with spherical crown part upper end with thin neck.
2. according to the described anti-theft screw of claim 1, it is characterized in that said screw head is one of hexagon socket head, outer-hexagonal head, square toes, socket cap or cup head.
3. according to claim 1 or 2 described anti-theft screws, it is characterized in that said thin neck the diameter at thin place be φ 0.5-φ 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200128859U CN201982458U (en) | 2011-01-08 | 2011-01-08 | Anti-theft screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200128859U CN201982458U (en) | 2011-01-08 | 2011-01-08 | Anti-theft screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982458U true CN201982458U (en) | 2011-09-21 |
Family
ID=44609920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200128859U Expired - Fee Related CN201982458U (en) | 2011-01-08 | 2011-01-08 | Anti-theft screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982458U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335008A (en) * | 2013-07-10 | 2013-10-02 | 郑洪蛟 | Universal anti-theft bolt and using method thereof |
| CN110159641A (en) * | 2019-06-13 | 2019-08-23 | 海盐宏诚精工科技有限公司 | A kind of disposable anti-theft screw |
-
2011
- 2011-01-08 CN CN2011200128859U patent/CN201982458U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335008A (en) * | 2013-07-10 | 2013-10-02 | 郑洪蛟 | Universal anti-theft bolt and using method thereof |
| CN110159641A (en) * | 2019-06-13 | 2019-08-23 | 海盐宏诚精工科技有限公司 | A kind of disposable anti-theft screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20180108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |