CN2700628Y - Theftproof bolt - Google Patents
Theftproof bolt Download PDFInfo
- Publication number
- CN2700628Y CN2700628Y CN 200420017944 CN200420017944U CN2700628Y CN 2700628 Y CN2700628 Y CN 2700628Y CN 200420017944 CN200420017944 CN 200420017944 CN 200420017944 U CN200420017944 U CN 200420017944U CN 2700628 Y CN2700628 Y CN 2700628Y
- Authority
- CN
- China
- Prior art keywords
- taper pin
- small sircle
- sircle hole
- screw rod
- theft bolt
- 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
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- Dowels (AREA)
Abstract
The utility model provides a theft-proof bolt, comprising a small circular hole drilled at the top centre of one end of a screw thread, a screw rod which is provided with a cross-shaped opening, and a circular wedge pin. The circular wedge pin can be inserted from the small circular hole and can be fastened at the bottom of the small circular hole after nuts are tightened when the facility of a high voltage line tower is arranged at the outdoor and is used, and the nuts can not be quit after the cross-shaped opening is expanded and cracked, having good theft-proof function.
Description
Technical field
The utility model relates to a kind of clamping bolt, can play the anti-theft bolt of antitheft effect after especially tightening.
Background technique
At present, general bolt is made up of screw rod and nut, during use nut screwing clamping is got final product, but when using in the open air, as high-tension line iron tower installation etc., demounting bolt, the stolen incident that causes power failure of equipment often take place, model utility 98225750.3 anti-theft screws of having announced, though also can play certain antitheft effect, as with the screw thread filing, or the position of expanding, hole beaten and reset, also can lose antitheft effect.
Can not fine antitheft problem in order to overcome existing clamping bolt, the utility model provides a kind of anti-theft bolt, can play the good especially effect of anti-theft effect.
The technological scheme that the utility model adopted is: the screw thread one end top center at common screw is bored a small sircle hole, the top is opened " ten " font opening again, and the degree of depth of cross opening is equivalent to 2/3rds of the small sircle hole degree of depth.Select the steel of material hardness for use, process a circular taper pin greater than screw rod, its length and small sircle hole deep equality, microcephaly's bore is less than screw rod roundlet aperture 0.1-1.5mm.When using bolt, behind nut screwing clamping, be bumped into from small sircle hole with circular taper pin, the expansion of cross opening is split, the major part bore of circular taper pin is according to the expansion needs design of breach, with the diameter at the bottom of the root diameter 〉=nut thread tooth of the screw flight of guaranteeing its breach, the bottom of the direct injection small sircle hole of circular taper pin chucking makes it taper pin and fixes and can't come off.
The beneficial effects of the utility model are: behind the nut screwing clamping, taper pin is bumped into from the cross opening, because the material hardness of taper pin is big, directly injection small sircle hole bottom tightens, forming taper pin can't come off, and the screw rod that makes it to ftracture can not reset, and the screw flight root diameter 〉=nut thread root diameter of cracking, can guarantee that the thief can't take away the screw thread filing on nut or return nut by force with other instrument, thereby make anti-theft bolt play real antitheft effect.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings
Fig. 1 is the utility model schematic representation;
Fig. 2 is the utility model cut-away view;
Fig. 3 is the utility model embodiment schematic representation.
Embodiment:
Among Fig. 1, bore a small sircle hole (2) in the screw thread one end top center of screw rod (1), threaded top is opened a cross opening (3), and the degree of depth is equivalent to 2/3rds of small sircle hole (2) degree of depth, selects for use material hardness to process circular taper pin (4) greater than the steel of screw rod.
Among Fig. 2 embodiment: nut (5) is screwed into the circular taper pin of screw rod (1) (4) and is bumped into small sircle hole (2), cross opening (3) swelling cracking.
Claims (4)
1, a kind of anti-theft bolt is characterized in that: screw rod (1) screw thread one end top center is drilled with small sircle hole (2), and cross opening (3) is arranged, and is furnished with circular taper pin (4);
2, anti-theft bolt according to claim 1 is characterized in that the degree of depth of cross opening (3) is equivalent to 2/3rds of small sircle hole (2) degree of depth.
3, anti-theft bolt according to claim 1, it is characterized in that the length of circular taper pin (4) and the deep equality of small sircle hole (2), the major part bore will be guaranteed behind cross opening (3) swelling cracking root diameter of mouth diameter 〉=nut thread at the bottom of the screw flight tooth.
4, anti-theft bolt according to claim 1 is characterized in that the hardness of the material hardness of circular taper pin greater than the screw rod material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017944 CN2700628Y (en) | 2004-04-27 | 2004-04-27 | Theftproof bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017944 CN2700628Y (en) | 2004-04-27 | 2004-04-27 | Theftproof bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700628Y true CN2700628Y (en) | 2005-05-18 |
Family
ID=34769267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017944 Expired - Fee Related CN2700628Y (en) | 2004-04-27 | 2004-04-27 | Theftproof bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2700628Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335003A (en) * | 2013-07-24 | 2013-10-02 | 太仓市协诚金属制品有限公司 | Lock bolt with groove |
| CN104482023A (en) * | 2014-12-07 | 2015-04-01 | 泉州市永茂电子科技有限公司 | Screw rod, expansion rod and anti-loosening bolt available for strong-shock environments or mining machinery |
| CN107269669A (en) * | 2017-07-27 | 2017-10-20 | 海盐东盛紧固件制造有限公司 | A kind of anti-theft bolt group for being difficult to remove |
| CN110131281A (en) * | 2019-06-04 | 2019-08-16 | 贵州航天精工制造有限公司 | A kind of threaded fastener anti-loose method and structure |
-
2004
- 2004-04-27 CN CN 200420017944 patent/CN2700628Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335003A (en) * | 2013-07-24 | 2013-10-02 | 太仓市协诚金属制品有限公司 | Lock bolt with groove |
| CN104482023A (en) * | 2014-12-07 | 2015-04-01 | 泉州市永茂电子科技有限公司 | Screw rod, expansion rod and anti-loosening bolt available for strong-shock environments or mining machinery |
| CN107269669A (en) * | 2017-07-27 | 2017-10-20 | 海盐东盛紧固件制造有限公司 | A kind of anti-theft bolt group for being difficult to remove |
| CN110131281A (en) * | 2019-06-04 | 2019-08-16 | 贵州航天精工制造有限公司 | A kind of threaded fastener anti-loose method and structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |