CN201100301Y - Theft-prevention screw and special spanner - Google Patents
Theft-prevention screw and special spanner Download PDFInfo
- Publication number
- CN201100301Y CN201100301Y CNU2007200432956U CN200720043295U CN201100301Y CN 201100301 Y CN201100301 Y CN 201100301Y CN U2007200432956 U CNU2007200432956 U CN U2007200432956U CN 200720043295 U CN200720043295 U CN 200720043295U CN 201100301 Y CN201100301 Y CN 201100301Y
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- CN
- China
- Prior art keywords
- platform
- projection
- screw
- depression
- theft
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- 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 discloses an anti-theft screw, which comprises a screw rod (1), a screw cap (2) which comprises a first platform (3), and a special spanner, wherein a projection (4) is arranged on the first platform (3), the side surface of the projection (4) is a curved surface, a first hole (5) is arranged on the projection (4), the special spanner comprises a handle (7), a second platform (8) is arranged on the handle (7), a depression (9) is arranged in the second platform (8), the depression (9) is corresponding to the projection (4) of the above anti-theft screw, the side surface of the depression (9) is the curved surface which is corresponding to the side surface of the projection (4), and a second column (10) is arranged on the second platform (8). Because of the special design of the working surface and the stress points of the anti-theftscrew, the special tools can only be used to open, thereby achieving the anti-theft function.
Description
Technical field
The utility model relates to a kind of anti-theft screw and special spanner thereof, belongs to machinery and is connected and fixed and uses the component technical field.
Background technique
At present, various device fastening be connected link devices such as all needing screw, the problem that exists is that the screw of different specification can find corresponding instrument to open on the market easily, when therefore the visual plant of installing when departments such as electric power, communications is stolen, will influence the normal operation of equipment, and produce serious consequence.
Summary of the invention
The utility model provides a kind of anti-theft screw and special spanner thereof with theftproof performance.
The utility model adopts following technological scheme:
A kind of anti-theft screw comprises screw rod and nut, and nut comprises first platform, is provided with projection on first platform, and the projection side surface be curved surface, on projection, be provided with first hole.
A kind of special spanner comprises handle, is provided with second platform on handle, in second platform, be provided with depression, and should depression protruding corresponding with above-mentioned anti-theft screw, the side surface of depression is a curved surface, and this curved surface is corresponding with the side surface of projection, is provided with second column on second platform.
Compared with prior art, the utlity model has following advantage:
The utlity model has theftproof performance.Because the side surface of the top bump of screw of the present utility model is curved, and on projection, be provided with first hole, working surface with the matching used special opening instrument of this screw also is curved surface simultaneously, and on working surface, be provided with column, column just in time is arranged in first hole on the screw bosses when opening like this, therefore in use, the utility model is by changing the force bearing point and the stress surface of screw and special spanner thereof, make this kind screw not only possess the fastening characteristic that screw itself has, and this kind screw must be used and could open with corresponding opener, strengthened the theftproof performance of screw.
Description of drawings
Fig. 1 is the plan view of anti-theft screw in the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right elevation of Fig. 1.
Fig. 4 is the plan view of Fig. 1.
Fig. 5 is the A-A sectional view of Fig. 2.
Fig. 6 is the plan view of special-purpose spanner in the utility model.
Fig. 7 is the plan view of Fig. 6.
Fig. 8 is the A-A sectional view of Fig. 7.
Have among the above figure: screw rod 1, nut 2, first platform 3, projection 4, first hole 5, first column 6, handle 7, second platform 8, depression 9, second column 10, second hole 11.
Embodiment
A kind of anti-theft screw, comprise that material is the screw rod 1 and the nut 2 of 45# steel, nut 2 comprises first platform 3, on first platform 3, be provided with projection 4, and projection 4 side surface is curved surface, on projection 4, is provided with first hole 5, the diameter in this hole is 1.2mm, the curved surface of projection 4 side surface is S-shaped, and being provided with diameter on first platform 3 is first column 6 of 1.2mm, and first column 6 and first hole 5 lay respectively at the both sides of protruding 4 side surface.
A kind of material is the special spanner of 45# steel, comprise handle 7, on handle 7, be provided with second platform 8, in second platform 8, be provided with depression 9, and this depression 9 is corresponding with the projection 4 of above-mentioned anti-theft screw, the side surface of depression 9 is a curved surface, and this curved surface is corresponding with the side surface of projection 4, and being provided with diameter on second platform 8 is second column 10 of 1.0mm, and the curved surface of the side surface of depression 9 is S-shaped, be provided with second hole 11 on second platform 8, the diameter in this hole is 1.4mm.
When with this special spanner, second column 10 of special spanner is arranged in first hole 5 on the screw, first column 6 on the anti-theft screw just in time is arranged in second hole 11 of special opening instrument, and simultaneously the side surface of the depression 9 of special opening instrument is that working surface just in time matches with the side surface of the projection 4 of anti-theft screw.
Claims (6)
1, a kind of anti-theft screw comprises screw rod (1) and nut (2), it is characterized in that nut (2) comprises first platform (3), is provided with projection (4) on first platform (3), and the side surface of projection (4) is curved surface, is provided with first hole (5) in projection on (4).
2, anti-theft screw according to claim 1 is characterized in that the curved surface of side surface of described projection (4) is S-shaped.
3, anti-theft screw according to claim 2 is characterized in that being provided with first column (6) on first platform (3), and first column (6) and first hole (5) lay respectively at the both sides of the side surface of projection (4).
4, a kind of special spanner, comprise handle (7), on handle (7), be provided with second platform (8), it is characterized in that in second platform (8), being provided with depression (9), and should cave in (9) are corresponding with the projection (4) of above-mentioned anti-theft screw, the side surface of depression (9) is a curved surface, and this curved surface is corresponding with the side surface of projection (4), is provided with second column (10) on second platform (8).
5, special spanner according to claim 4 is characterized in that the curved surface of side surface of described depression (9) is S-shaped.
6, spanner according to claim 5 is characterized in that being provided with second hole (11) on second platform (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200432956U CN201100301Y (en) | 2007-08-17 | 2007-08-17 | Theft-prevention screw and special spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200432956U CN201100301Y (en) | 2007-08-17 | 2007-08-17 | Theft-prevention screw and special spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100301Y true CN201100301Y (en) | 2008-08-13 |
Family
ID=39936836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200432956U Expired - Fee Related CN201100301Y (en) | 2007-08-17 | 2007-08-17 | Theft-prevention screw and special spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100301Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384325A (en) * | 2010-08-28 | 2012-03-21 | 诺马德国有限责任公司 | Hose clamp with a clamping screw, clamping screw and tool for driving the clamping screw |
| CN106272246A (en) * | 2016-08-31 | 2017-01-04 | 中国冶集团有限公司 | The extracting tool of S type one word tamper proof screws and method |
-
2007
- 2007-08-17 CN CNU2007200432956U patent/CN201100301Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384325A (en) * | 2010-08-28 | 2012-03-21 | 诺马德国有限责任公司 | Hose clamp with a clamping screw, clamping screw and tool for driving the clamping screw |
| CN102384325B (en) * | 2010-08-28 | 2016-05-04 | 诺马德国有限责任公司 | With the instrument of hose clamp, clamping screw and the driving clamping screw of clamping screw |
| CN106272246A (en) * | 2016-08-31 | 2017-01-04 | 中国冶集团有限公司 | The extracting tool of S type one word tamper proof screws and method |
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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: 20080813 Termination date: 20090917 |