CN2474785Y - Antitheft bolt device and its special spanner - Google Patents
Antitheft bolt device and its special spanner Download PDFInfo
- Publication number
- CN2474785Y CN2474785Y CN 00235076 CN00235076U CN2474785Y CN 2474785 Y CN2474785 Y CN 2474785Y CN 00235076 CN00235076 CN 00235076 CN 00235076 U CN00235076 U CN 00235076U CN 2474785 Y CN2474785 Y CN 2474785Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- sleeve
- theft
- groove
- 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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- 230000007812 deficiency Effects 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Disclosed are an anti-theft bolt device and its special spanner, wherein the anti-theft bolt device comprises a bolt, a nut, a sleeve and an anti-theft nut. The screw cap of the bolt is cylinder, and the front end of the bolt has a prism. The diagonal length of the prism cross section is smaller than the bolt diameter. The inner wall of the sleeve center has an annular projection, and the anti-theft nut is provided with two symmetrical axial bores. The special spanner has a bodkin engageable with symmetrical axial bore on the anti-theft nut. One end of the sleeve is sleeved on the nut, and the special spanner is used to connect the anti-theft nut and the bolt in the other end, further fixing the sleeve to the bolt. Because both the force points of the bolt and the nut are in the sleeves, general spanner can not be used to open.
Description
The utility model relates to bolt device, specifically a kind of anti-theft bolt device and special spanner thereof.
Usually, the nut of general nut and bolt is the Hexagon cylinder, so that spanner is puted forth effort fixed object, its deficiency is can not be antitheft, and is easier to be stolen especially for field (as using on the rail).
The purpose of this utility model provides a kind of bolt device and special spanner thereof that can be antitheft.
The utility model is achieved in that the anti-theft bolt device is made up of bolt, nut, sleeve and anti-theft nut, the nut of bolt is a cylindrical body, the front end of bolt is a prism, the catercorner length of prism makes that less than the diameter of bolt nut and anti-theft nut can be by cylinder and Bolt Connection; On the sleeve intermediate inner wall annular lug is arranged, nut and anti-theft nut and bolt be with scyewed joint, and be positioned at the two ends of sleeve projection, has axial bore or groove on the anti-theft nut.Have on the special spanner with anti-theft nut on axial bore or the pin that cooperates of groove.The prism of bolt front end is the spanner Point of Strength, screw bolt and nut is fixed earlier during use with spanner, again with jacket casing on nut, with special spanner anti-theft nut is put into sleeve by the other end of sleeve, be fixed on the bolt, sleeve is fixed.
Because the utility model adopts the fillet nut, and the Point of Strength of bolt and nut are built in the sleeve, can't open with common wrench, reaches antitheft purpose.
Fig. 1 is the utility model structural representation.
Fig. 2 is that Fig. 1 is along A-A line sectional view.
Fig. 3 is the utility model special spanner structural representation.
Below in conjunction with accompanying drawing the utility model is described in detail.
By shown in Figure 1, the nut 14 of bolt 11 is a cylindrical body, the front end of bolt is six prisms 6, six prismatic cross section diagonal length make nut 10 and anti-theft nut 8 to be connected with spanner by bolt 11 front ends six prismatic 6 and nut 10 that workpiece 12,13 is fixing with bolt 11 by six prismatic 6 of bolt 11 front ends less than the diameter of bolt.Sleeve 2 lower ends are enclosed within on the nut 10, annular lug 9 is arranged on the intermediate inner wall, have two symmetrical axial bores or groove 7 on the anti-theft nut 8, special spanner as shown in Figure 3, form by cross bar 15 and vertical two pins 16 that are connected with cross bar, two pins 16 can be put into the axial bore or the groove 7 of anti-theft nut 8, with special spanner the upper end of anti-theft nut 8 by sleeve 2 are connected with bolt 11, by the projection in the middle of the sleeve 29 sleeve are fixed.Bolt six prisms 6 are positioned at sleeve, and its front end has an annular groove 5, and the upper end also is provided with a lock 1 in the sleeve, lock core 3 parallel groove 5 outsides that are positioned at, by shown in Figure 2, there is the hook 4 of projection lock core 3 both sides that are positioned at groove 5 places, and rotary locking cylinder screws in hook 4 in the groove 5 and lock can be pinned.
Claims (3)
1, a kind of anti-theft bolt device comprises bolt, nut, it is characterized in that it also comprises sleeve and anti-theft nut, and the nut of bolt is a cylindrical body, and the front end of bolt is a prism, and the length of prism cross section diagonal is less than the diameter of bolt; On the sleeve intermediate inner wall annular lug is arranged, nut and anti-theft nut and bolt are with scyewed joint and be positioned at the two ends of sleeve projection, and the prism of bolt front end is positioned at sleeve, has two symmetrical axial bores or groove on the anti-theft nut.
2, bolt device according to claim 1 is characterized in that the front end of bolt prism has an annular groove; Be provided with a lock in the sleeve of anti-theft nut outer end, there is the hook of projection in the parallel outside that is positioned at bolt front end annular groove of lock core with the lock core one or both sides of groove corresponding position.
3, a kind of unlatching is by the special spanner of claim 1 or 2 described bolt devices, it is characterized in that forming the axial bore on the position of described pin and the anti-theft nut or the position of groove is corresponding also can insert in corresponding hole or the groove by cross bar and the vertical pin that is connected with cross bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00235076 CN2474785Y (en) | 2000-05-18 | 2000-05-18 | Antitheft bolt device and its special spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00235076 CN2474785Y (en) | 2000-05-18 | 2000-05-18 | Antitheft bolt device and its special spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2474785Y true CN2474785Y (en) | 2002-01-30 |
Family
ID=33596979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00235076 Expired - Fee Related CN2474785Y (en) | 2000-05-18 | 2000-05-18 | Antitheft bolt device and its special spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2474785Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462574C (en) * | 2006-11-28 | 2009-02-18 | 温州信德电力配件有限公司 | Dedicate wrench for disassembling fastener and wrench thereof |
| CN109296622A (en) * | 2018-12-07 | 2019-02-01 | 江西洪都航空工业集团有限责任公司 | A kind of anti-loosening structure for thread connection under space constraint |
-
2000
- 2000-05-18 CN CN 00235076 patent/CN2474785Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462574C (en) * | 2006-11-28 | 2009-02-18 | 温州信德电力配件有限公司 | Dedicate wrench for disassembling fastener and wrench thereof |
| CN109296622A (en) * | 2018-12-07 | 2019-02-01 | 江西洪都航空工业集团有限责任公司 | A kind of anti-loosening structure for thread connection under space constraint |
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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 |