CN2883763Y - Nut antitheft device and special spanner - Google Patents
Nut antitheft device and special spanner Download PDFInfo
- Publication number
- CN2883763Y CN2883763Y CN 200520099113 CN200520099113U CN2883763Y CN 2883763 Y CN2883763 Y CN 2883763Y CN 200520099113 CN200520099113 CN 200520099113 CN 200520099113 U CN200520099113 U CN 200520099113U CN 2883763 Y CN2883763 Y CN 2883763Y
- Authority
- CN
- China
- Prior art keywords
- nut
- spiral shell
- shell pad
- steel ball
- special spanner
- 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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Abstract
The utility model relates to a nut theftproof device with a special wrench, which comprises a gasket and a plurality of steel balls. The shape of the gasket is an equilateral pentagonal. The inner part of the gasket has a standard internal screw thread, the central part of which is wrung out a direction along the gradually deepening eccentric flute provided with the steel balls. The steel balls are enclosed by a plastic housing and the special wrench is pentagonal socket wrench. The original nuts need not to be disassembled when the theftproof device is arranged, which makes the device has the advantages of convenient arrangement and applicability.
Description
Technical field
The utility model relates to a kind of nut anti-theft device, particularly a kind of nut anti-theft device and spanner thereof that is used to move member nut locking radial.
Background technique
At present, be used for antitheft device numerous species is arranged, be broadly divided into three classes by its structure characteristic: a class is that one of processing is along the screw thread groove that direction deepens gradually of back-outing on the internal thread of common standard nut, and the groove internal fixation has needle roller or ball, and nut reaches antitheft purpose because of can not oppositely screwing out.Second class is machined grooves and boring on screw rod or nut, squeezes into key pin again, in order to pin nut.The 3rd class is to adopt special periphery to be protruding curved nut or abnormity nut structure, reaches the antitheft purpose of nut with the special tool screw rod of packing into.More than the device great majority all will be changed a social system again to standard nut, have weakened the mechanical strength of nut, the locking device structure complexity of increase, cost height.More than the device nut that is used for newly-built member can play certain locking, antitheft effect, but is applied on the nut that moves member, and difficulty is bigger.As will above anti-theft device being installed to the iron tower of power transmission line that has moved, must remove original bolt, nut, and these bolts, nut because of be subjected to the variable load effect with the member asphyxia by external pressure on the chest and abdomen, be difficult to dismounting, even remove, bolt originally, nut are because of distortion, corrosion, great majority can not be reused, and all purchase new anti-theft bolt, nut, and cost is higher.
Summary of the invention
The utility model purpose is to overcome the deficiencies in the prior art part, provides a kind of simple in structure, must not dismantle original bolt, nut and can effectively antitheft nut apparatus.
The utility model is realized by the following technical solutions:
Nut anti-theft device of the present utility model comprises the spiral shell pad, steel ball, and vinyl cover, special spanner is characterized in that the spiral shell pad has standard female, there is there be not screw thread to back-out a groove that direction deepens gradually at internal thread middle part.
Aforesaid nut anti-theft device is characterized in that the wherein said spiral shell pad outside is pentagon.
The special spanner of aforesaid nut anti-theft device is characterized by interior pentagon, M16, M20, three kinds of bolts of M24 can shared one spanner.
Nut anti-theft device working principle process of the present utility model is: by nut, bolt, spiral shell pad, the supporting nut anti-theft device of forming of steel ball.The spiral shell pad has standard female, internal thread middle part have an edge to back-out groove that direction deepens gradually, one steel ball is arranged in the groove, the exposed portions serve that is rotary with the bolt of nut at operation iron tower or member screws in the spiral shell pad with special spanner, in the process of tightening, the vinyl cover that plays the effect of sealing steel ball in the spiral shell pad withdraws from voluntarily owing to bolt end face reaction force, and continuation is tightened till the spiral shell pad with special spanner.If return stubborn spiral shell pad with common wrench, because of spiral shell pad profile is that pentagon skids, ineffective, when desiring to withdraw from even kill the spiral shell pad by force, owing to the friction effect of bolt outside thread and steel ball drives the small end bottom that steel ball is clamp-oned spiral shell pad groove, only can move back tighter and tighter, thereby realize the antitheft effect of nut.
Description of drawings
Fig. 1 is the utility model device user mode schematic representation
Fig. 2 is the spiral shell gasket part dress schematic representation of the utility model device
Fig. 3 is the spanner profile schematic representation of the utility model device
Embodiment
As shown in Figure 1, on the bolt (2) of operation member (1), be fixed with nut (3), the spiral shell pad (4) of the utility model device is tightened by bolt (2) exposed portions serve screw-in and with special spanner (7).Owing to reaction force, vinyl cover (6) can be backed off from spiral shell pad (4) voluntarily in the process that screws in, and steel ball (5) then continues to stay in the groove.Spiral shell pad (4) thickness is 1/3 of standard nut, and for better antitheft, the outside is designed to positive pentagon.This device volume is little, and consumptive material is few, and simple installation needn't be dismantled the nuts and bolt that has moved, shields equally for mounted member nut.
Except that above-mentioned example, all technological schemes that form obtained with spiral shell pad profile equivalent transformation are all within protection domain of the present utility model.
Claims (2)
1. nut anti-theft device and special spanner thereof, comprise spiral shell pad, steel ball, special spanner, it is characterized in that spiral shell pad internal thread middle part has along the screw thread eccentric groove that direction deepens gradually of back-outing, steel ball places in the groove, when oppositely desiring to back-out the spiral shell pad, because friction effect, steel ball is clamp-oned the small end bottom of spiral shell pad groove, move back tighter and tighter, thereby realize antitheft effect.
2. according to claims 1 described a kind of nut anti-theft device and spanner thereof, it is characterized in that spiral shell pad profile is a pentagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520099113 CN2883763Y (en) | 2005-12-01 | 2005-12-01 | Nut antitheft device and special spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520099113 CN2883763Y (en) | 2005-12-01 | 2005-12-01 | Nut antitheft device and special spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2883763Y true CN2883763Y (en) | 2007-03-28 |
Family
ID=37956825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520099113 Expired - Fee Related CN2883763Y (en) | 2005-12-01 | 2005-12-01 | Nut antitheft device and special spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2883763Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511432A (en) * | 2012-06-21 | 2014-01-15 | 昆山神昌精密金属制品有限公司 | Bolt assembly |
| CN106913937A (en) * | 2017-04-21 | 2017-07-04 | 苏州恒瑞迪生医疗科技有限公司 | A kind of syringe and realize the syringe quick load and release device |
| CN108555378A (en) * | 2018-06-29 | 2018-09-21 | 国家电网公司 | Ball-type anti-theft nut dismantles spanner |
-
2005
- 2005-12-01 CN CN 200520099113 patent/CN2883763Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511432A (en) * | 2012-06-21 | 2014-01-15 | 昆山神昌精密金属制品有限公司 | Bolt assembly |
| CN103511432B (en) * | 2012-06-21 | 2016-11-23 | 昆山神昌精密金属制品有限公司 | A kind of bolt assembly |
| CN106913937A (en) * | 2017-04-21 | 2017-07-04 | 苏州恒瑞迪生医疗科技有限公司 | A kind of syringe and realize the syringe quick load and release device |
| CN106913937B (en) * | 2017-04-21 | 2022-07-22 | 苏州恒瑞迪生医疗科技有限公司 | Needle cylinder and device for realizing quick loading and releasing of needle cylinder |
| CN108555378A (en) * | 2018-06-29 | 2018-09-21 | 国家电网公司 | Ball-type anti-theft nut dismantles spanner |
| CN108555378B (en) * | 2018-06-29 | 2019-04-16 | 国家电网公司 | Ball-type anti-theft nut dismantles spanner |
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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 |