CN2255523Y - Anti-theft screw bolt and its special mating tool - Google Patents
Anti-theft screw bolt and its special mating tool Download PDFInfo
- Publication number
- CN2255523Y CN2255523Y CN 96219513 CN96219513U CN2255523Y CN 2255523 Y CN2255523 Y CN 2255523Y CN 96219513 CN96219513 CN 96219513 CN 96219513 U CN96219513 U CN 96219513U CN 2255523 Y CN2255523 Y CN 2255523Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- hole
- key
- nut
- circular hole
- 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
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model relates to an anti-theft screw bolt and the matched special tool, wherein, a circular hole is arranged at the end of the screw bolt, and a key hole is arranged on the wall of the hole; one T-shaped key is arranged on the utility model, the convex key of the T-shaped key is penetrated through the key hole of the screw bolt, and the inner wall of the circular hole of the screw bolt is supported with the arc board; the place between the bottom of the arc board of the T-shaped key and the hole wall of the circular hole of the screw bolt is supported with a spring steel sheet; the circular hole is closed with a circular block; an axial key way is arranged on the hole wall of the screw thread of a screw nut, and the key way is provided with a 30 DEG chamfering along the rear side of the screwing in direction of the screw thread; a through hole and a special sleeve spanner are aligned with the key way, the through hole of the screw nut is aligned with a through hole on the sleeve, the boosting rod is hinged on the bracket connected with sleeve, and the top of the boosting rod is fixedly connected with a pressing pin. The utility model has the advantages of simple structure, anti-theft, and reliability, and can be disassembled with a specific tool.
Description
The utility model relates to the machanical fastener bolt, a kind of specifically anti-theft bolt and supporting special tool thereof.
Bolt, nut are machanical fasteners, and using scope is very wide, and the plain bolt nut can use plank to tighten to unscrew, but in industries such as electric industry, railway, oil field, bigger based on working attributes, installation in the open air, workload.Simultaneously as iron tower, rail, the installation that reaches equipment such as transformer all to lean on screw fastening.Plain screw tends to become flexible voluntarily, or is dismantled easily by some lawless persons owing to there is not anti-theft feature, steals national valuable cargo, causes immeasurable loss to nation-building.A kind of anti-theft screw of market demand comes equipment is protected.
For addressing this problem, way originally is directly screw and nut to be welded, and perhaps with rivet screw and nut is riveted together, though do antitheftly like this, brings certain difficulty for again later dismounting maintenance.Increase government investment in addition again, make screw form disposable user mode, cause certain waste.In order to address this problem, the producer that also has develops dismountable anti-theft bolt, the more employing of China is the anti-theft screw cap of " two cap bag ", " single cap bag " formula now, principle all is to utilize two nuts, first nut plays the role of fastening, and puts " cap bag " and uses second nut cap bag and first nut screwing clamping again, and these two nuts all are within " the cover footpath " of cap bag, common wrench can't directly contact with nut, just can avoid theft effectively.Screw will extend but do on the one hand relatively like this, how to overlap " cap bag " with a nut and, and cost correspondingly increases.On the other hand, " sleeve pipe " instrument of selling on the market is done slightly to repair and just can be unloaded nut down easily.So often do not have antitheft effect, dismountable anti-theft bolt remains further to be developed and is perfect.
The purpose of this utility model provides a kind of anti-theft bolt and supporting special tool thereof, is applicable to that the connection that is exposed to open-air mechanical facility is fastening, has the anti-back silk, and the theft protection function can use special tool for convenience detach again.
The purpose of this utility model is achieved in that
A kind of anti-theft bolt and supporting special tool thereof are made up of bolt, nut and kit, and it is configured to
One bolt, its end have the suitable circular hole of the degree of depth, and an axial narrow flute profile keyhole is arranged on the hole wall between this circular hole and the bolt external diameter;
One T shape key is made of protruding key and perpendicular arc plate, and the arc plate periphery is greater than protruding key, and T shape key is loaded in the circular hole of bolt end, and its protruding key is by passing in the bolt keyhole and being higher than the bolt cylindrical, and its arc plate is supported on the bolt circular-hole internal-wall;
One spring steel plate is loaded in the circular hole of bolt end, is supported between the arc plate bottom and bolt circular hole hole wall of T shape key;
One circle is stifled, becomes fixedly connected with bolt end circular hole and with this circular hole sealing;
One nut matches with bolt thread, on its screw thread hole wall axial keyway is arranged, the protruding key of its size and T shape key is corresponding, this axial keyway has 30 ° of chamferings along the rear side of screw thread precession direction, and the front side is the right angle, has a through hole to align keyway on the external diameter of nut and communicates with this keyway;
One supporting special tool, by the sleeve plank, extension lever and pad constitute, the sleeve plank has hexagonal internal bore corresponding with the nut profile, there is a through hole to align the through hole of nut on this sleeve plank, extension lever is articulated on the support of coupling sleeve, and the extension lever top is connected with a pad, aligns protruding key on the bolt thereby this pad aligns perforation on the sleeve.
Described spring steel plate is S-shaped.
The utility model has following actively useful effect:
The utility model because only need on plain screw, make a call to a circular hole and an elongated slot, pack into protruding key and spring sheet, nut is driven a keyway, so simple in structure, cost reduces relatively.Again because bolt end circular hole can be less, so can be not influential to the original firm degree of screw.Nut is screwing on when screwing off, and steel key all is in hidden state, so can play antitheft effect well.
Now in conjunction with the accompanying drawings with preferred embodiment:
Fig. 1 is the utility model structural representation, is front view.
Fig. 2 is the A-A parting view of Fig. 1.
Fig. 3 is the partial enlarged view of nut keyway among Fig. 2, has only drawn nut half.
Fig. 4 is the decomposing schematic representation of each assembly among Fig. 1.
Fig. 5 is the structural representation of supporting special-purpose plank of the present utility model.
Anti-theft bolt of the present utility model and supporting special tool thereof are made up of bolt 1, nut 2 and kit 3, and it is configured to
One bolt 1, its end have the suitable circular hole of the degree of depth 11, and an axial narrow flute profile keyhole 12 is arranged on the hole wall between this circular hole and the bolt external diameter;
One T shape key 4, be made of protruding key 41 and perpendicular arc plate 42, arc plate 42 peripheries are greater than protruding key 41, and T shape key is loaded in the bolt end circular hole 11, its protruding key is by passing in the bolt keyhole 12 and being higher than the bolt cylindrical, and its arc plate 42 is supported on the inwall of bolt circular hole 11;
One spring steel plate 5 is loaded in the bolt end circular hole 11, is supported between arc plate 42 bottoms and bolt circular hole 11 hole walls of T shape key;
One circle is stifled 6, and is fixedly connected with 11 one-tenths of bolt end circular holes and this circular hole is sealed;
One nut 2, match with bolt thread, on its screw thread hole wall axial keyway 21 is arranged, the protruding key of its size and T shape key is corresponding, this axial keyway has 30 ° of chamferings 22 along the rear side of screw thread precession direction, the front side is the right angle, has a through hole 23 to align keyway 21 on the external diameter of nut and communicates with this keyway, sees Fig. 3;
One supporting special tool 3, by sleeve plank 31, extension lever 32 and pad 33 constitute, the sleeve plank has hexagonal internal bore 34 corresponding with the nut profile, there is a through hole 35 to align the through hole 23 of nut on this sleeve plank, extension lever 32 is articulated on the support 36 of coupling sleeve, and the extension lever top is connected with a pad 33, aligns protruding key 41 on the bolt thereby this pad 33 aligns perforation 35 on the sleeve.
Described spring steel plate 5 is S-shaped.
Number 7,8 in the accompanying drawing and be fastened part.
During installation T shape key 4 is packed in the screw circular hole 11, makes protruding key 41 projecting inward, ＂ S ＂ spring steel plate 5 peaces are gone into the steel key bottom from microscler keyhole 12, use again with screw with isometrical cylindrical stifled 6 circular hole 11 being rivetted of material.Screw promptly installs like this, nut is screwed in screw, owing in the keyway in the nut 30 ° of slopes are arranged, be easy to just can screw in nut on the screw, but owing to there is spring sheet upwards to head on steel key, the side of the keyway of nut and the side of steel key meet at right angles and closely fit together when falling back, the top power that power that nut moves back thread and key the make progress interaction that meets at right angles, so this power can not subdued key, just can not screw off nut yet.
The working principle of special tool dismounting anti-theft bolt: make a call to a φ 4.5mm circular hole in the top of sleeve pipe 31 in Fig. 5, the pad 33 on the extension lever 32 can be probeed into smoothly by this hole, extension lever 32 usefulness steel pins nail is connected on the supporting frame 36, makes it free movable.Like this when dismounting during nut the casing pipe sleeve upper cap nut, circular hole on the sleeve pipe and the circular hole on the nut are aligned, to the moving extension lever 32 of upper plate, pad 33 on the extension lever is just by circular hole on circular hole on the sleeve pipe and the nut, directly act on the steel key 41 on the nut, steel key is pressed in the screw body, and the turn extension lever can optionally be dismantled this anti-theft screw as the dismounting plain nut.
The utility model not needing also to can be used for the place of dismantling, and only needs make the through hole 23 that aligns keyway on the external diameter when the processing nut, or when assembling through hole 23 is blocked, and just changes over non-removable bolt and connects.
Claims (2)
1, a kind of anti-theft bolt and supporting special tool thereof are made up of bolt, nut and kit, and it is characterized in that: it is configured to
One bolt, its end have the suitable circular hole of the degree of depth, and an axial narrow flute profile keyhole is arranged on the hole wall between this circular hole and the bolt external diameter;
One T shape key is made of protruding key and perpendicular arc plate, and the arc plate periphery is greater than protruding key, and T shape key is loaded in the circular hole of bolt end, and its protruding key is by passing in the bolt keyhole and being higher than the bolt cylindrical, and its arc plate is supported on the bolt circular-hole internal-wall;
One spring steel plate is loaded in the circular hole of bolt end, is supported between the arc plate bottom and bolt circular hole hole wall of T shape key;
One circle is stifled, becomes fixedly connected with bolt end circular hole and with this circular hole sealing;
One nut matches with bolt thread, on its screw thread hole wall axial keyway is arranged, the protruding key of its size and T shape key is corresponding, this axial keyway has 30 ° of chamferings along the rear side of screw thread precession direction, and the front side is the right angle, has a through hole to align keyway on the external diameter of nut and communicates with this keyway;
One supporting special tool, by the sleeve plank, extension lever and pad constitute, the sleeve plank has hexagonal internal bore corresponding with the nut profile, there is a through hole to align the through hole of nut on this sleeve plank, extension lever is articulated on the support of coupling sleeve, and the extension lever top is connected with a pad, aligns protruding key on the bolt thereby this pad aligns perforation on the sleeve.
2, anti-theft bolt as claimed in claim 1 is characterized in that: described spring steel plate is S-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96219513 CN2255523Y (en) | 1996-10-07 | 1996-10-07 | Anti-theft screw bolt and its special mating tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96219513 CN2255523Y (en) | 1996-10-07 | 1996-10-07 | Anti-theft screw bolt and its special mating tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255523Y true CN2255523Y (en) | 1997-06-04 |
Family
ID=33900089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96219513 Expired - Fee Related CN2255523Y (en) | 1996-10-07 | 1996-10-07 | Anti-theft screw bolt and its special mating tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255523Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366926C (en) * | 2006-04-06 | 2008-02-06 | 张连墩 | Checkscrew built in spring lamination |
| CN105156449A (en) * | 2015-10-08 | 2015-12-16 | 国网山东省电力公司泰安供电公司 | Anti-dismounting bolt and nut combined structure |
| CN107528948A (en) * | 2017-09-30 | 2017-12-29 | 努比亚技术有限公司 | A kind of tamper threaded components and the mobile terminal with tamper threaded components |
-
1996
- 1996-10-07 CN CN 96219513 patent/CN2255523Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366926C (en) * | 2006-04-06 | 2008-02-06 | 张连墩 | Checkscrew built in spring lamination |
| CN105156449A (en) * | 2015-10-08 | 2015-12-16 | 国网山东省电力公司泰安供电公司 | Anti-dismounting bolt and nut combined structure |
| CN107528948A (en) * | 2017-09-30 | 2017-12-29 | 努比亚技术有限公司 | A kind of tamper threaded components and the mobile terminal with tamper threaded components |
| CN107528948B (en) * | 2017-09-30 | 2020-08-28 | 努比亚技术有限公司 | Anti-dismantling threaded component and mobile terminal with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201636181U (en) | Autolocking rivet nut for preventing rotation | |
| CN2255523Y (en) | Anti-theft screw bolt and its special mating tool | |
| CN207736233U (en) | A kind of piston unt dismantling device | |
| CN2871115Y (en) | Device for detaching crank pin on crank of cooker hood | |
| CN2866936Y (en) | Bolt and nut | |
| CN206643825U (en) | A kind of ratchet spanner | |
| CN2605101Y (en) | Combined tool for bicycle with lock clamp | |
| CN2529004Y (en) | Anti-theft bolt connection and mounting and dismounting tool used by same | |
| CN2292635Y (en) | Magnetic deep hole shocket wrench | |
| CN2536775Y (en) | Polish rod grip | |
| CN2628786Y (en) | Safety screw or screw-bolt and special spanner thereof | |
| CN2080895U (en) | Bushing driver special for stud | |
| CN219262909U (en) | Fracture-preventing hexagonal flange face bolt | |
| CN217805106U (en) | Driving structure of vertical pipe locking device | |
| CN2445134Y (en) | Anti-theft bolt nut | |
| CN215589053U (en) | Bolt fastening device for narrow space | |
| CN214187113U (en) | Tool box for electrical engineering | |
| CN112922951B (en) | Anti-theft bolt assembly | |
| CN113803345B (en) | Flexible automobile fastener | |
| CN220626977U (en) | Lock structure of power supply | |
| CN209520842U (en) | Tooth pipe for shower main body assembling locks machine | |
| CN218508773U (en) | Light gauge steel gypsum board hoist and mount fixed knot construct | |
| CN220816235U (en) | Antitheft bolt | |
| CN2307123Y (en) | Chain clasp for concrete pump | |
| CN2742210Y (en) | Anti-theft device for screw piece and dismantling tool used with it |
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 |