CN201087753Y - Anti-theft bolt - Google Patents
Anti-theft bolt Download PDFInfo
- Publication number
- CN201087753Y CN201087753Y CNU2007200217057U CN200720021705U CN201087753Y CN 201087753 Y CN201087753 Y CN 201087753Y CN U2007200217057 U CNU2007200217057 U CN U2007200217057U CN 200720021705 U CN200720021705 U CN 200720021705U CN 201087753 Y CN201087753 Y CN 201087753Y
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- CN
- China
- Prior art keywords
- annular groove
- nut
- utility
- screw rod
- model
- 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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- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a burglarproof screw bolt, which comprises a screw rod and a screw nut, wherein, the screw nut is provided with a decentered annular groove; the shape of the section of the annular groove forms a U shape, and general screw bolt withdrawal tools cannot be used for the annular groove. The periphery of the outside diameter of the screw nut forms a circumference surface; an annular protective sleeve is arranged outside the screw nut; the lower end of a sleeve body of the protective sleeve is provided with an end surface; the end surface is provided with a through hole; the screw rod passes through the through hole to be connected with the screw nut, and the screw rod prevents to be loosened or destroyed by a wrench or other ruinous tools from the outside, and thus the burglarproof performance of the utility model is increased. The utility model has the advantages of simple manufacturing technique, low cost, easy and reliable use and good burglarproof performance, and can be largely used for various devices arranged outdoors.
Description
Technical field
The utility model relates to a kind of bolt that is used for fixing all kinds of machineries zero, parts, especially for the anti-theft bolt on the open-air various kinds of equipment.
Background technique
At present, be used for solid mechanical zero, parts bolt on the various kinds of equipment, mostly be standard bolt, nut on nut and the screw rod is outer hexagonal shaped, can load and unload with general utility tool, though easy to use, but its theftproof performance is poor, easily cause to be installed in losing of zero on the open-air various kinds of equipment, parts, reason is that its bolt head that has faceted pebble is convenient to dismounting very much, and the standard spanner supporting with it can arbitrarily have been bought on market.
Summary of the invention
The purpose of this utility model is to be various kinds of equipment constant zero, parts, provide a kind of simple in structure, be convenient to operation, have the bolt of stronger theftproof performance.
For achieving the above object, the technological scheme that the utility model adopted is:
A kind of anti-theft bolt; comprise screw rod and nut; it is characterized in that: described nut is provided with eccentric annular groove; the sectional shape of described annular groove is a U-shaped; the external diameter periphery of described nut is a circumferential surface, and the arranged outside of described nut has the protecting jacket of annular, and the lower end of described protecting jacket body is provided with end face; described end face is provided with through hole, and described screw rod passes through hole and is connected with nut.
Below be further improvement to technique scheme:
The width of the widest position of described annular groove is 5～20mm, and the width at narrow place is 1～5mm, described annular groove from the widest position to the narrowest rounding off.
As further improving:
The width of the widest position of described annular groove is 10mm, and the width at narrow place is 4mm, described annular groove from the widest position to the narrowest rounding off.
Beneficial effect
The utility model adopts said structure; on nut, be provided with the annular groove of disalignment; make general bolt disassembling tool to be applied to it; can only could be under the special tool effect supporting by degree of tightness with it; therefore has reliable theft protection; and the external diameter of nut periphery is a circumferential surface; the protecting jacket that annular is arranged in the arranged outside of nut; prevented that also it from unclamping it by spanner or other destructive instrument from the outside or destroy; thereby improved its theftproof performance, production technology of the present utility model is simple; cost is low, and is easy to use; reliably; have theftproof performance preferably, can be used to be installed in open-air various kinds of equipment in a large number.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the utility model embodiment's a structural representation;
Accompanying drawing 2 is that A-A in the accompanying drawing 1 is to sectional view.
Embodiment
Embodiment 1; as shown in Figure 1; a kind of anti-theft bolt; comprise screw rod 1 and nut 2; described nut 2 is provided with eccentric annular groove 4; the sectional shape of described annular groove 4 is a U-shaped; make general bolt disassembling tool to be applied to it; can only could be under the special tool effect supporting by degree of tightness with it; therefore has reliable theft protection; the arranged outside of described nut 2 has the protecting jacket 3 of annular; prevented that also it from unclamping it by spanner or other destructive instrument from the outside or destroy; thereby improved its theftproof performance; the lower end of described protecting jacket 3 bodies is provided with end face 6; described end face 6 is provided with through hole 5; described screw rod 1 passes through hole 5 and is connected with nut 2; as shown in Figure 2; the external diameter periphery of described nut 2 is a circumferential surface; the width of the widest position of described annular groove 4 is 10mm, and the width at narrow place is 4mm, and described annular groove 4 is from the widest position to the narrowest rounding off; production technology of the present utility model is simple; cost is low; easy to use; reliably, have theftproof performance preferably, can be used to be installed in open-air various kinds of equipment in a large number.
Claims (3)
1. anti-theft bolt; comprise screw rod (1) and nut (2); it is characterized in that: described nut (2) is provided with eccentric annular groove (4); the sectional shape of described annular groove (4) is a U-shaped; the external diameter periphery of described nut (2) is a circumferential surface, and the arranged outside of described nut (2) has the protecting jacket (3) of annular, and the lower end of described protecting jacket (3) body is provided with end face (6); described end face (6) is provided with through hole (5), and described screw rod (1) passes through hole (5) and is connected with nut (2).
2. anti-theft bolt according to claim 1 is characterized in that: the width of the widest position of described annular groove (4) is 5～20mm, and the width at narrow place is 1～5mm, described annular groove (4) from the widest position to the narrowest rounding off.
3. anti-theft bolt according to claim 2 is characterized in that: the width of the widest position of described annular groove (4) is 10mm, and the width at narrow place is 4mm, described annular groove (4) from the widest position to the narrowest rounding off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200217057U CN201087753Y (en) | 2007-04-30 | 2007-04-30 | Anti-theft bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200217057U CN201087753Y (en) | 2007-04-30 | 2007-04-30 | Anti-theft bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201087753Y true CN201087753Y (en) | 2008-07-16 |
Family
ID=39635346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200217057U Expired - Fee Related CN201087753Y (en) | 2007-04-30 | 2007-04-30 | Anti-theft bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201087753Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530654A (en) * | 2016-11-04 | 2017-03-22 | 国网山东省电力公司日照供电公司 | Electric remote meter reading system |
| CN109083908A (en) * | 2018-11-07 | 2018-12-25 | 嘉兴海缙五金科技有限公司 | A kind of antidetonation anti-theft nut |
-
2007
- 2007-04-30 CN CNU2007200217057U patent/CN201087753Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530654A (en) * | 2016-11-04 | 2017-03-22 | 国网山东省电力公司日照供电公司 | Electric remote meter reading system |
| CN109083908A (en) * | 2018-11-07 | 2018-12-25 | 嘉兴海缙五金科技有限公司 | A kind of antidetonation anti-theft nut |
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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: 20080716 Termination date: 20110430 |