CN202468654U - Anti-theft nut - Google Patents
Anti-theft nut Download PDFInfo
- Publication number
- CN202468654U CN202468654U CN2012200730532U CN201220073053U CN202468654U CN 202468654 U CN202468654 U CN 202468654U CN 2012200730532 U CN2012200730532 U CN 2012200730532U CN 201220073053 U CN201220073053 U CN 201220073053U CN 202468654 U CN202468654 U CN 202468654U
- Authority
- CN
- China
- Prior art keywords
- circular arc
- nut
- skewed groove
- retainer
- arc skewed
- 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 - Lifetime
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Abstract
The utility model relates to an anti-theft nut, which comprises a nut body. The anti-theft nut is mainly characterized in that an axial circular arc skewed groove is at least formed on a screw hole inner wall of the nut body; the transverse section of the circular arc skewed groove is arc-shaped; the radial depth of the circular arc skewed groove which is far away from the rotary direction of threads is gradually increased; an elastic stop block is arranged at one end of the circular arc skewed groove, which has the maximum radial depth; and a retainer is arranged in the circular arc skewed groove. When the nut body is screwed into a bolt, the retainer moves to a part of the circular arc skewed groove, which has the maximum radial dimension, along the circular arc skewed groove, and screwing of the nut is not inhibited. When the nut rotates reversely, the retainer moves to a part of the circular arc skewed groove, which has the minimum radial dimension; and because the radial dimension of the circular arc skewed groove is gradually decreased, the retainer can be locked, and the nut body cannot rotate, so an anti-theft effect is achieved. The anti-theft nut is suitable to serve as an installation fastener for outdoor facilities in the fields of power, railways, bridges, oil, chemical industry and the like.
Description
Technical field
The utility model belongs to fastener areas, is specifically related to a kind of anti-theft nut.
Background technique
At present; Be installed in facilities such as open-air electric power, railway, bridge, oil, chemical industry and all need a large amount of threaded fasteners that use; Because existing threaded fastener does not mostly possess anti-theft feature, is disassembled easily and steals, and not only can cause any property loss; Also cause potential safety hazard easily, when serious even can cause security incident.
Summary of the invention
To the problems referred to above, the purpose of the utility model provides a kind of fixing back non-removable anti-theft nut of tightening.
The purpose of the utility model realizes as follows: a kind of anti-theft nut; Comprise nut body; It is characterized in that having an axial arc slot at least on the screw inwall of nut body, the cross section of arc slot is arcuation, and its radial depth minus thread turns to cumulative; Be provided with flexible block at the maximum end of the radial depth of arc slot, be provided with retainer in the arc slot; Described retainer is steel ball or steel column; Described flexible block has magnetic; Be provided with neck bush in the screw of described nut body.
During use, screw in the process of bolt at nut body, retainer can move to the radial dimension biggest place of this groove along arc slot, and the screw-in of nut is not had inhibition.After nut was tightened, if the counterrotating nut, retainer then can move toward the minimum place of the radial dimension of arc slot, but because the radial dimension of arc slot diminishes gradually, retainer can be stuck, and nut body can't be screwed out, thereby plays the antitheft effect.
Compare with existing threaded fastener, the utlity model has the non-removable characteristics in back are installed, therefore have tangible anti-theft effect, thus property loss and the potential safety hazard avoiding field facility and possibly cause because fastening piece is stolen.
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 expression nut body; 2 expression arc slots; 3 expression retainers; 4 expression flexible blocks; 5 expression neck bushs; 6 expression bolts.
Embodiment
Below will combine accompanying drawing and the utility model done further description through embodiment.
With reference to Fig. 1; Have an axial arc slot 2 on the screw inwall of the nut body 1 of this anti-theft nut; The cross section of arc slot 2 is arcuation, and its radial depth minus thread turns to cumulative, at the maximum end of the radial depth of arc slot 2 one magnetic flexible block 4 is arranged; Retainer 3 in the arc slot 2 is a steel ball, is provided with neck bush 5 in the screw of nut body 1.
When nut body 1 screws in bolt 6, can move to the radial dimension biggest place of arc slot 2 as the steel ball 3 of retainer, till being tightened.In the process that nut body 1 screws in; Play and prevent that the neck bush 5 that steel ball 3 drops out in the arc slot 2 from can be ejected by bolt 6 gradually; And the magnetic of flexible block 4 has some sucking actions to retainer; In installation process, can make steel ball 3 be difficult for losing, thereby avoid unnecessary trouble as retainer; When especially adopting steel column, steel column can not fallen down, improve the efficient of installment work as retainer; The elastic reaction of flexible block 4 can overcome the gap between bolt 6 and the nut body 1 simultaneously, and is convenient, smooth and easy when nut assembly is installed.When direction swivel nut body 1, steel ball 3 meetings are moved toward the minimum place of the radial dimension of arc slot 2, but owing to the radial dimension of arc slot 2 diminishes gradually; Steel ball 3 can be stuck; Nut body 1 can't rotate, and makes nut assembly on-dismountable, thereby plays the antitheft effect.
Claims (4)
1. anti-theft nut; Comprise nut body (1); It is characterized in that having an axial arc slot (2) at least on the screw inwall of nut body (1), the cross section of arc slot (2) is arcuation, and its radial depth minus thread turns to cumulative; Be provided with flexible block (4) at the maximum end of the radial depth of arc slot (2), be provided with retainer (3) in the arc slot (2).
2. anti-theft nut according to claim 1 is characterized in that retainer (3) is steel ball or steel column.
3. anti-theft nut according to claim 1 and 2 is characterized in that flexible block (4) has magnetic.
4. anti-theft nut according to claim 1 and 2 is characterized in that being provided with neck bush (5) in the screw of nut body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200730532U CN202468654U (en) | 2012-03-01 | 2012-03-01 | Anti-theft nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200730532U CN202468654U (en) | 2012-03-01 | 2012-03-01 | Anti-theft nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468654U true CN202468654U (en) | 2012-10-03 |
Family
ID=46916813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200730532U Expired - Lifetime CN202468654U (en) | 2012-03-01 | 2012-03-01 | Anti-theft nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973503A (en) * | 2019-04-26 | 2019-07-05 | 嘉兴海缙五金科技有限公司 | A kind of track nut of type protective device with teeth |
| CN110056623A (en) * | 2019-04-26 | 2019-07-26 | 嘉兴海缙五金科技有限公司 | A kind of band gets higher the track nut of type protective device |
-
2012
- 2012-03-01 CN CN2012200730532U patent/CN202468654U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973503A (en) * | 2019-04-26 | 2019-07-05 | 嘉兴海缙五金科技有限公司 | A kind of track nut of type protective device with teeth |
| CN110056623A (en) * | 2019-04-26 | 2019-07-26 | 嘉兴海缙五金科技有限公司 | A kind of band gets higher the track nut of type protective device |
| CN109973503B (en) * | 2019-04-26 | 2023-10-03 | 嘉兴海缙五金科技股份有限公司 | Rail nut with latch type protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |