CN201554747U - Theft-proof nut - Google Patents
Theft-proof nut Download PDFInfo
- Publication number
- CN201554747U CN201554747U CN2009201998626U CN200920199862U CN201554747U CN 201554747 U CN201554747 U CN 201554747U CN 2009201998626 U CN2009201998626 U CN 2009201998626U CN 200920199862 U CN200920199862 U CN 200920199862U CN 201554747 U CN201554747 U CN 201554747U
- Authority
- CN
- China
- Prior art keywords
- circular cone
- nut
- neck
- theft
- spiral shell
- 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
Abstract
The utility model discloses a theft-proof nut which comprises a nut main body, wherein the nut main body is composed of a screwed head with a multi-angle structure and a circular cone arranged on the lower portion of the screwed head, wherein the circular cone and the screwed head are connected into a whole through an indent torsion neck, integral screws are arranged in the circular cone, the torsion neck and the screwed head, and the torsion neck is designed into a reversed circular cone shape. Through the arrangement of the torsion neck, and after components are screwed on the nut main body to be tight, the screwed head is further forced to rotate, the torsion neck can be twisted off, the circular cone can be firmly fastened on the components, and nuts and devices are effectively prevented from being stolen under the condition that the nut can not be detached by special tools.
Description
Technical field
The utility model relates to nut class fastening piece, especially a kind of nut with anti-theft feature.
Background technique
Nut is that mechanical part connects and device indispensable part fixedly the time, especially at some special occasions, as railway, highway, bridge facility, or all need to use the fastening piece of nut class on the power equipment of peripheral hardware, this just requires nut except fastening, also need have certain anti-theft feature, prevent that the lawless person from carrying out theft to equipment.But present nut majority is the polygon nut of regular shape, tool using even directly just can unload with hand, in order to address this problem, the technician has designed various nuts with anti-theft feature, be to disclose a kind of anti-theft nut in 200720090142.7 the patent as the patent No., include nut body, nut body top is circular cone, the circular cone bottom is connected with cylinder, be provided with antitheft groove in the nut body, in the antitheft groove hoodle be set, spring and block are though the theftproof performance of this structure improves greatly, but the also corresponding raising of nut structure complexity, fabricating cost.And for example the patent No. is to disclose a kind of anti-theft nut in 200810162961.7 the patent, nut body has been arranged to circular cone, and be provided with a plurality of shallow pit patterns on the surface of circular cone, simple in structure, have anti-theft effect, but according to its structure as can be seen, though shallow pit pattern screws conveniently, unscrew difficulty, still can outward winding as spanner class instrument if use, the lawless person still has assistant's chance.
Summary of the invention
Problem to be solved in the utility model is exactly the shortcoming at prior art, provides a kind of simple in structure, the anti-theft nut that fabricating cost is low, and the form structure design is ingenious, and theftproof performance is good.
For reaching above-mentioned purpose, the utility model adopts following technological scheme: a kind of anti-theft nut, comprise nut body, it is characterized in that: nut body is made up of the spiral shell head of polygonal structure and the circular cone of being located at spiral shell head below, and the neck that twists off by indent between circular cone and spiral shell head connects as one.
Further, described circular cone, twist off the screw thread that neck and spiral shell head inside are structure as a whole.
Further, twist off neck and be set to inverted truncated cone, reduce to twist off the moment that twists off of neck, be convenient to after circular cone screws it be twisted off.
Further, the conical surface of circular cone is set to the arc of evagination, and difficult more when circular cone unscrews, anti-theft effect improves.
Further, the tapering of circular cone is set to 30 ° ~ 38 °.
Further, described spiral shell head adopts four jiaos or hexagon nut.
Advantage of the present utility model: by twisting off the setting of neck, screw on part after tight at nut body, firmly rotate the spiral shell head once more, twisting off neck can be twisted off, and circular cone just can firmly be fastened on the part, and no special instrument can't unload, prevent that effectively nut and equipment are stolen, the utility model fabricating cost is low, and structure and mode of execution are simpler, is fit to multiple occasion and uses.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model is a kind of anti-theft nut, comprises nut body, and nut body is made up of the spiral shell head 1 of polygonal structure and the circular cone 3 of being located at spiral shell head 1 below, and the tapering of circular cone 3 is traditionally arranged to be 30 ° ~ 38 °; 1 neck 2 that twists off by indent of circular cone 3 and spiral shell head connects as one, and circular cone 3, twists off the screw thread that neck 2 and spiral shell head 1 inside are structure as a whole; In order to reduce to twist off the moment that twists off of neck 2, be convenient to more after circular cone 3 screws it be twisted off, twist off neck 2 and be set to inverted truncated cone.The conical surface 31 of circular cone 3 is set to the arc of evagination, and hand is puted forth effort more nowhere, and difficult more when circular cone unscrews, anti-theft effect improves.Spiral shell head 1 can adopt common four jiaos or hexagon nut, is convenient to screw.
Compare other anti-theft nut, it is simple that the utility model structure more becomes, operating method is also easier, nut is beautiful shape not only, anti-theft effect is good, and owing to twist off neck 2 this special theft-prevention structures, make that the moment when each nut screws on the equipment is identical, guarantee the fixing more solid and reliable of equipment.
Claims (6)
1. an anti-theft nut comprises nut body, it is characterized in that: nut body is made up of the spiral shell head (1) of polygonal structure and the circular cone (3) of being located at spiral shell head (1) below, and the neck (2) that twists off by indent between circular cone (3) and spiral shell head (1) connects as one.
2. a kind of anti-theft nut according to claim 1 is characterized in that: described circular cone (3), twist off the screw thread that neck (2) and spiral shell head (1) inside are structure as a whole.
3. a kind of anti-theft nut according to claim 2 is characterized in that: twist off neck (2) and be set to inverted truncated cone.
4. a kind of anti-theft nut according to claim 3 is characterized in that: the conical surface (31) of circular cone (3) is set to the arc of evagination.
5. according to any described a kind of anti-theft nut of claim 1 to 4, it is characterized in that: the tapering of circular cone (3) is set to 30 ° ~ 38 °.
6. according to any described a kind of anti-theft nut of claim 1 to 4, it is characterized in that: described spiral shell head (1) adopts four jiaos or hexagon nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201998626U CN201554747U (en) | 2009-11-19 | 2009-11-19 | Theft-proof nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201998626U CN201554747U (en) | 2009-11-19 | 2009-11-19 | Theft-proof nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554747U true CN201554747U (en) | 2010-08-18 |
Family
ID=42614429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201998626U Expired - Lifetime CN201554747U (en) | 2009-11-19 | 2009-11-19 | Theft-proof nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155485A (en) * | 2011-03-25 | 2011-08-17 | 苏州工业园区新凯精密五金有限公司 | Wring-off nut |
| CN102410296A (en) * | 2011-10-26 | 2012-04-11 | 郑柏林 | Anti-loosening and anti-disassembling nut |
-
2009
- 2009-11-19 CN CN2009201998626U patent/CN201554747U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155485A (en) * | 2011-03-25 | 2011-08-17 | 苏州工业园区新凯精密五金有限公司 | Wring-off nut |
| CN102410296A (en) * | 2011-10-26 | 2012-04-11 | 郑柏林 | Anti-loosening and anti-disassembling nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |