CN2249328Y - Self-locking anti-theft bolt and magnetic unlocking tool - Google Patents
Self-locking anti-theft bolt and magnetic unlocking tool Download PDFInfo
- Publication number
- CN2249328Y CN2249328Y CN 93214057 CN93214057U CN2249328Y CN 2249328 Y CN2249328 Y CN 2249328Y CN 93214057 CN93214057 CN 93214057 CN 93214057 U CN93214057 U CN 93214057U CN 2249328 Y CN2249328 Y CN 2249328Y
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- CN
- China
- Prior art keywords
- self
- theft bolt
- unlocking tool
- theft
- locking anti
- 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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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a self-locking anti-theft screw bolt and a magnetic field force unlocking tool. The anti-theft screw bolt is composed of a U-shaped screw cap, a screw rod, an inner wrench, a spring, a screw sleeve and a washer. The screw bolt can not be disassembled by any metal tool directly after self-locked, so the screw bolt has strong anti-theft ability. The magnetic field force unlocking tool has an electromagnetic type and a permanent-magnet type. The electromagnetic type magnetic field force unlocking tool is composed of an iron core and a coil, wherein, the iron core is provided with a convex suction nozzle. The permanent-magnet magnetic field force unlocking tool is composed of a permanent magnet with a special shape. The anti-theft screw bolt can be unlocked by the magnetic field force produced by the unlocking tool, which is convenient for the normal disassembly of the screw bolt.
Description
The present invention is a kind of anti-theft bolt and separates lock tool that particularly a kind of anti-theft bolt and magnetic force thereof that has self-locking structure separated lock tool.
At present, the industrial bolt that is used for fastening apparatus mostly is four angle heads, the first-class plain bolt of hexagonal greatly, and the instrument of dismantling these bolts very easily obtains or just can use by simple machining, so the anti-theft capability of plain bolt is poor.
Task of the present invention is to provide a kind of self-locking anti-theft bolt and magnetic force thereof to separate lock tool.After the bolt self-locking, guaranteeing under the bolt design structure situation, can not utilize any metal tools to carry out the non-destructive dismounting, after lock tool is removed self-locking bolt be carried out not damaging dismounting, thereby prevent to be occurred decomposing by bolted equipment and lose and can only utilize magnetic force to separate.
The self-locking anti-theft bolt is finished as follows in the task of the present invention: this bolt is formed (Fig. 1) by U-shaped nut (2), interior spanner (3), spring (5) and (9) four critical pieces of screw rod.The top hole shape of the sectional shape of the extension lever of interior spanner (3) and U-shaped nut (2) matches, and less clearance is only arranged, and makes internally a kind of spanner structural type of spanner (3) formation of U-shaped nut (2).The strip convex tooth (6) that interior spanner (3) has near an end of screw rod (9) and the concave indentation (7) of screw rod (9) matches, the periphery of interior spanner (3) is with spring (5).When U-shaped nut (2) is spun on screw rod (9) when going up, rely on the effect of interior spanner (3) and spring (5) between U-shaped nut (2) and the screw rod (9) and self-locking.At this moment,, also rotate, but U-shaped nut (2) can not separate with screw rod (9), thereby guarantee connected equipment decomposition can not occur and lose to the sense of rotation of U-shaped nut (2) because of self-locking action makes screw rod (9) when rotation U-shaped nut when (2).
Front view when Fig. 1 has been used to connect two sheet metals for the self-locking anti-theft bolt is further described below in conjunction with 1 pair of invention of accompanying drawing.
Among Fig. 1: (2) are the U-shaped nut, its top have except that circular and the hole of given shape.(3) be interior spanner, the shape in the hole of the sectional shape of its extension lever and U-shaped nut (2) matches, interior spanner (3) does not have any thing carried that makes interior spanner (3) propose outside, cap hole at the cap bore portion that is exposed to U-shaped nut (2) maybe can propose setting, is drilled with horizontal perforation (4) in the appropriate location of the extension lever of interior spanner (3).Horizontal perforation (4) is convenient to maintain the self-locking releasing state when removing self-locking carry interior spanner (3) on the direction of cap hole.Spring (5) is for being placed in the peripheral spring of interior spanner (3), self-locking rear spring pressurized, the suitable elasticity of spring, the external solution that proposes the hole of U-shaped nut (2) but the internal spanner of suction instrument (3) that should guarantee to utilize common similar permanent magnet (comprising permanent magnet in the loudspeaker, together following) picks up is removed self-locking.(9) be screw rod, its end is provided with in-line or the cross concave indentation (7) that the strip convex tooth (6) with interior spanner (3) matches.Screw rod (9) adopts non-through vertical both-end subtend boring (11).(10) two sheet metals for being connected by the spiral shell inspection.For reducing moisture content to the corrosion of self-locking part with prevent that foreign material from entering from latching segment and make inconvenience when removing self-locking, overlap with closed swivel nut (1) in the outside of U-shaped nut (2).(8) be packing ring.
This self-locking structure also can be used for the screw rod of existing similar accompanying drawing 2, need only open with concave indentation (7) in the end of screw rod, loads onto the structural type that the U-shaped nut (2) among Fig. 1, interior spanner (3) and (5) three parts of spring can form the self-locking anti-theft bolt.
This self-locking structure also can be installed on nut and survey on the either party of face.As Fig. 3, the acting on of interior spanner among Fig. 1 is equivalent to a stop pin here at this moment, and stop pin can not established the convex tooth by screw rod one end, and screw rod laterally is drilled with the suitable pit of the degree of depth.Bolt also can reach antitheft purpose after leaning on spring and stop pin self-locking.
Magnetic force in the task of the present invention is separated lock tool can make electromagnetic type or magneto.
Fig. 4 separates the lock tool front view for the electromagnetic type magnetic force.Among Fig. 4, the iron core that (15) make for permeability magnetic material is wound with coil (17) on it, and (16) are the convex suction nozzle.Behind coil and power connection, the magnetic field suction that utilizes the suction nozzle place to produce can pick up the interior spanner (3) among Fig. 1 and remove self-locking, and the suction of the internal spanner in magnetic field (3) of suction nozzle place generation this moment should guarantee that interior spanner (3) is picked up the outside, cap hole that proposes U-shaped nut (2) and carry out release.
Magnetic force is separated lock tool when making magneto, can utilize hard magnetic material to obtain after adding the high magnetic fields magnetization.This is special is applied to the suction that the magneto that the self-locking anti-theft bolt carries out release is separated the internal spanner of magnetic force (3) that lock tool produces required that to separate lock tool identical with above-mentioned electromagnetic type magnetic force.
Claims (4)
1. self-locking anti-theft bolt and magnetic force are separated lock tool, form the self-locking anti-theft bolt by U-shaped nut (2), interior spanner (3), spring (5), screw rod (9), swivel nut (1) and packing ring (8), by iron core (15), coil (17) composition magnetic force on iron core is separated lock tool, the top that it is characterized in that U-shaped nut (2) have except that circular and formalize the really hole of shape, iron core (15) has the convex suction nozzle.
2. a kind of self-locking anti-theft bolt according to claim 1 and magnetic force are separated lock tool, it is characterized in that interior spanner (3) has a horizontal perforation (4).
3. a kind of self-locking anti-theft bolt according to claim 1 and magnetic force are separated lock tool, it is characterized in that there is strip convex tooth (6) end of interior spanner (3).
4. a kind of self-locking anti-theft bolt according to claim 1 and magnetic force are separated lock tool, it is characterized in that there is concave indentation (7) screw rod (9) end, and screw rod laterally is drilled with the suitable pit of the degree of depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93214057 CN2249328Y (en) | 1993-05-24 | 1993-05-24 | Self-locking anti-theft bolt and magnetic unlocking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93214057 CN2249328Y (en) | 1993-05-24 | 1993-05-24 | Self-locking anti-theft bolt and magnetic unlocking tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2249328Y true CN2249328Y (en) | 1997-03-12 |
Family
ID=33794959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93214057 Expired - Fee Related CN2249328Y (en) | 1993-05-24 | 1993-05-24 | Self-locking anti-theft bolt and magnetic unlocking tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2249328Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242756A (en) * | 2011-05-27 | 2011-11-16 | 齐齐哈尔轨道交通装备有限责任公司 | Fastening device |
| CN111395856A (en) * | 2020-04-20 | 2020-07-10 | 江西天境精藏科技有限公司 | Gravestone |
-
1993
- 1993-05-24 CN CN 93214057 patent/CN2249328Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242756A (en) * | 2011-05-27 | 2011-11-16 | 齐齐哈尔轨道交通装备有限责任公司 | Fastening device |
| CN102242756B (en) * | 2011-05-27 | 2013-04-24 | 齐齐哈尔轨道交通装备有限责任公司 | Fastening device |
| CN111395856A (en) * | 2020-04-20 | 2020-07-10 | 江西天境精藏科技有限公司 | Gravestone |
| CN111395856B (en) * | 2020-04-20 | 2021-08-20 | 江西天境精藏科技有限公司 | Gravestone |
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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 |