CN2742210Y - Anti-theft device for screw piece and dismantling tool used with it - Google Patents
Anti-theft device for screw piece and dismantling tool used with it Download PDFInfo
- Publication number
- CN2742210Y CN2742210Y CN 200420047970 CN200420047970U CN2742210Y CN 2742210 Y CN2742210 Y CN 2742210Y CN 200420047970 CN200420047970 CN 200420047970 CN 200420047970 U CN200420047970 U CN 200420047970U CN 2742210 Y CN2742210 Y CN 2742210Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- theft device
- overcoat
- diameter
- 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 - Lifetime
Links
- 238000013329 compounding Methods 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model provides an anti-theft device for the screw piece, which is provided with a bolt; the upper part of the bolt head of the bolt is provided with a dismantling part; the center of the dismantling part is deflected from the axial center of the bolt; the anti-theft device is also provided with an outer sleeve; the inner diameter of the outer sleeve is bigger than the maximum diameter of the bolt head; the bottom of the outer sleeve is provided with an inward extending flange; the inner diameter of the flange is bigger than the outer diameter of the screw rod of the bolt. The utility model also provides a dismantling tool which is matched with the anti-theft device of the screw piece; the dismantling tool is provided with a tool main body whose outer diameter is smaller than the inner diameter of the outer sleeve; the lower part of the tool main body is provided with a dismantling part; the center of the dismantling part is deflected from the axial center of the nut. The utility model can prevent government property from being stolen by thieves with common wrenches, pipe wrenches, etc., to screw nuts (or bolts).
Description
Technical field
The utility model relates to a kind of attachment means, particularly relates to a kind of anti-theft device and removal tool special thereof of threaded fastener.
Background technique
The threaded piece of widespread usage mainly be screw bolt and nut, and screw bolt and nut has outer-hexagonal shape at present, outer quadrilateral, and interior quadrilateral and circle wait other shape.These fastening pieces are as long as use corresponding common wrench or pipe wrench can screw or unclamp and causes using fastening equipment of this class fastening piece or the normal stolen molecule of member to unload modes such as bolt, nut carrying out various stealthy activitys, cause very big loss to national wealth.
Summary of the invention
The purpose of this utility model provides a kind of threaded piece anti-theft device and removal tool special thereof that can address the above problem.
Technical solution of the present utility model is:
A kind of threaded piece anti-theft device that the utility model provides, this device has a bolt, on the bolt head top of bolt a dismounting portion is arranged, the center of dismounting portion and the axial centre of bolt depart from, this anti-theft device also has an overcoat, the internal diameter of overcoat is greater than the maximum diameter of bolt head, and the bottom of overcoat has a flange that extends internally, and the internal diameter of said flange is greater than the external diameter of bolt screw rod.
The utility model also provides another threaded piece anti-theft device, this device has a nut, a dismounting portion is arranged at the top at the nut of bolt, the center of dismounting portion and the axial centre of nut depart from, this anti-theft device also has in the overcoat, the internal diameter of overcoat is greater than the maximum diameter of bolt head, and the bottom of overcoat has a flange that extends internally, and the internal diameter of flange is less than the maximum outside diameter of nut.
The utility model also provides a kind of extracting tool that is used with the threaded piece anti-theft device, it has a tool body, the external diameter of tool body has a disassembling part less than the internal diameter of overcoat in the bottom of tool body, and the center of dismounting portion and the axial centre of nut depart from.
In the utility model, the dismounting portion on anti-theft device or extracting tool can be groove and projection, and groove and projection in anti-theft device and the extracting tool dismounting portion cooperatively interact.
Characteristics of the present utility model are:
Be tightened in the used above-mentioned anti-demounting bolt on equipment or the parts, bolt head is placed in the rotating overcoat, the outside diameter on bolt head top is greater than the internal diameter of lower flange, overcoat is blocked, overcoat can only rotate with respect to bolt head, can not take out, and the overcoat outside is a cylindrical shape, thereby the molecule that avoids theft is turned on nut (or bolt) theft of state property with instruments such as common wrench, pipe wrench.
Description of drawings
Fig. 1 is threaded piece anti-theft device of the present utility model and the sectional view that is mated the extracting tool of use.
Fig. 2 is another threaded piece anti-theft device of the present utility model and the sectional view that is mated the extracting tool of use.
Embodiment
Below in conjunction with drawings and Examples content of the present utility model is further elaborated:
As shown in Figure 1, threaded fastener of the present utility model has a bolt, and the bolt head 2 of bolt is positioned on the flange surface of rotating jacket 4 endoporus, and matches with endoporus.Have a groove shaped dismounting portion 3 on the top of bolt head 2, the center of groove 3 is m with the eccentric axis amount of circle bolt.The internal diameter of this overcoat 4 is greater than the maximum diameter of bolt head 2, and the bottom of overcoat 4 has a flange that extends internally, and the internal diameter of flange is greater than the external diameter of bolt screw rod.
As a kind of alternative embodiment, groove 3 can be a kind of projection.
Equally as shown in Figure 1, the invention also discloses a kind of extracting tool that is used with the threaded piece anti-theft device, it has a tool body 6, the external diameter of tool body 6 is less than the internal diameter of overcoat 4, has a convex shaped disassembling part 5 in the bottom of tool body, the center of convex shaped dismounting portion and the axial centre of nut depart from, and offset is m.
This projection matches with the groove 3 of bolt, and tool body 6 is an one with disassembling part 5, and tool body 6 is provided with the joint with other spanner compounding practices, as the hexagon joint among the figure.The outside diameter of projection 5 and the internal diameter of groove 3 are complementary, the outside diameter of main body 6 matches with the internal diameter of rotating jacket 4, and it is identical with the outside diameter of bolt head 2, main body 6 is put into rotating jacket 4, and when inserting projection 5 in the grooves 3, can will screw on circle bolt head 2 and its connected body spare that combines 1 or unclamp.
As a kind of alternative embodiment, projection 5 can be a kind of groove.
As a kind of alternative embodiment, dismounting handle (not shown) is set on the tool body 6, that is, tool body 6 constitutes with a dismounting handle.
Structure of the present utility model is used for the situation of nut, with embodiment one difference be main body 7 inside are hollow cylinders, all the other are identical with enforcement shown in Figure 1.As can be seen from Figure 2, this device has a nut, a dismounting portion is arranged at the top at the nut of bolt, the center of dismounting portion and the axial centre of nut depart from, this anti-theft device also has in the overcoat, the internal diameter of overcoat is greater than the maximum diameter of bolt head, and the bottom of overcoat has a flange that extends internally, and the internal diameter of flange is less than the maximum outside diameter of nut.
Claims (9)
1, a kind of threaded piece anti-theft device, has a bolt, it is characterized in that, on the bolt head top of bolt a dismounting portion is arranged, axially departing from of the center of said dismounting portion and bolt, this anti-theft device also has an overcoat, and the internal diameter of said overcoat is greater than the maximum diameter of bolt head, the bottom of said overcoat has a flange that extends internally, and the internal diameter of said flange is greater than the external diameter of bolt screw rod.
2, a kind of threaded piece anti-theft device, has a nut, it is characterized in that, a dismounting portion is arranged at the top at the nut of bolt, the center of said dismounting portion and the axial centre of nut depart from, and this anti-theft device also has an overcoat, and the internal diameter of said overcoat is greater than the maximum diameter of bolt head, the bottom of said overcoat has a flange that extends internally, and the internal diameter of said flange is greater than the maximum outside diameter of nut.
According to claim 1 or described anti-theft device, it is characterized in that 3, said dismounting portion is a groove.
According to claim 1 or described anti-theft device, it is characterized in that 4, said dismounting portion is a projection.
5, a kind of extracting tool is characterized in that, has a tool body, and the external diameter of said main body has a disassembling part less than the internal diameter of overcoat in the bottom of said tool body, and the center of said dismounting portion and the axial centre of nut depart from.
6, extracting tool according to claim 5 is characterized in that, said dismounting portion is a groove.
7, extracting tool according to claim 5 is characterized in that, said dismounting portion is a projection.
8, according to any described extracting tool among the claim 5-7, it is characterized in that said tool body is provided with the joint with the spanner compounding practice.
9, extracting tool according to claim 8 is characterized in that, the dismounting handle is set on the said tool body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047970 CN2742210Y (en) | 2004-04-09 | 2004-04-09 | Anti-theft device for screw piece and dismantling tool used with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047970 CN2742210Y (en) | 2004-04-09 | 2004-04-09 | Anti-theft device for screw piece and dismantling tool used with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742210Y true CN2742210Y (en) | 2005-11-23 |
Family
ID=35477679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420047970 Expired - Lifetime CN2742210Y (en) | 2004-04-09 | 2004-04-09 | Anti-theft device for screw piece and dismantling tool used with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742210Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314955A (en) * | 2014-09-15 | 2015-01-28 | 常州市耀华仪器有限公司 | Torx handle screw |
| CN118532384A (en) * | 2024-07-26 | 2024-08-23 | 成都市欣欣高强度紧固件制造有限公司 | Anti-disassembly fastener and disassembly tool thereof |
-
2004
- 2004-04-09 CN CN 200420047970 patent/CN2742210Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314955A (en) * | 2014-09-15 | 2015-01-28 | 常州市耀华仪器有限公司 | Torx handle screw |
| CN118532384A (en) * | 2024-07-26 | 2024-08-23 | 成都市欣欣高强度紧固件制造有限公司 | Anti-disassembly fastener and disassembly tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENGJIA SCIENCE AND TECHNOLOGY CO., LTD., DAQING Free format text: FORMER OWNER: LI FUSHAN Effective date: 20110928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110928 Address after: Room 304, block C, entrepreneurial service center, hi tech Zone, Daqing, Heilongjiang Patentee after: Daqing high tech Zone Starey Technology Co. Ltd. Address before: 163316 room 106, block C, pioneer zone, Daqing hi tech Zone, Heilongjiang, Daqing Patentee before: Li Fushan |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Fushan Document name: Notification of Passing Examination on Formalities |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140409 Granted publication date: 20051123 |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Fushan Document name: Notification of Expiration of Patent Right Duration |