CN203796720U - Anti-theft bolt with inner thimble - Google Patents
Anti-theft bolt with inner thimble Download PDFInfo
- Publication number
- CN203796720U CN203796720U CN201420199386.9U CN201420199386U CN203796720U CN 203796720 U CN203796720 U CN 203796720U CN 201420199386 U CN201420199386 U CN 201420199386U CN 203796720 U CN203796720 U CN 203796720U
- Authority
- CN
- China
- Prior art keywords
- thimble
- hole
- bolt
- theft
- double
- 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
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- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses an anti-theft bolt with an inner thimble. The anti-theft bolt comprises a double-screw bolt, a nut, and the thimble, wherein a through hole is formed in the double-screw bolt and perpendicular to the axis of the double-screw bolt; internal threads are arranged in the through hole; the thimble is located in the through hole; external threads are arranged on the thimble; the thimble external threads are matched with the internal threads of the through hole; the front end of the thimble is conical; an irregular groove is formed in the rear end of the thimble; the length of the thimble is less than that of the through hole. When the front end part of the thimble protrudes out of the through hole, the nut cannot be reverted, in order to prevent burglary. The anti-theft bolt provided by the utility model is simple in structure, low in production cost, and good in anti-theft effect.
Description
Technical field
The present invention relates to a kind of anti-theft bolt, especially a kind of interior thimble anti-theft bolt.
Background technique
General, bolt is made up of double-screw bolt and nut, and nut coordinates and plays fastening effect with double-screw bolt, but it is higher for more fastening economic values to work as bolt, particularly when outdoor equipment or part, can be used the general utility tools such as spanner to open and steal by robber, bring grave danger to device security.
Summary of the invention
Technical problem solved by the invention, is to provide a kind of interior thimble anti-theft bolt, to solve above-mentioned background technical problem.
Thimble anti-theft bolt in a kind of, comprises double-screw bolt, nut, thimble, on described double-screw bolt, has through hole, and described through hole is perpendicular to double-screw bolt axle center; In through hole, be provided with internal thread.
Described thimble is positioned at through hole; Described thimble is provided with outside thread; Described thimble outside thread and through hole screw-internal thread fit; Described thimble front end is conical; Described thimble rear end is provided with special impression; Described thimble length is less than described through hole length.
Compared with prior art, the present invention is simple in structure, and cost of production is lower, and anti-theft effect is better.
Brief description of the drawings
Fig. 1 is fragmentary cross-sectional view of the present invention
Fig. 2 is side view of the present invention
Embodiment
Thimble anti-theft bolt in a kind of, comprises double-screw bolt 2, nut 4, thimble 3, on described double-screw bolt 2, has through hole 1; Described through hole 1 is perpendicular to double-screw bolt 2 axle center; In through hole 1, be provided with internal thread.Described thimble 3 is positioned at through hole 1; Described thimble 3 is provided with outside thread; Described thimble 3 outside threads and through hole 1 screw-internal thread fit; Described thimble 3 front ends are conical; Described thimble 3 rear ends are provided with special impression; Described thimble 3 length are less than described through hole 1 length.
In the time that nut 4 need to be tightened, rotating special tool is retracted in through hole 1 thimble 3 entirety; After nut 4 is fastening, rotating special tool makes outside the outstanding through hole 1 of thimble 3 fore-ends, makes the nut 4 cannot backspin, plays anti-theft function.In the time that nut 4 need to be opened, rotating special tool, is retracted in through hole 1 thimble 3 entirety, can open nut 4.
The invention provides a kind of cost of production low, the anti-theft bolt that using effect is good.
Claims (5)
1. a thimble anti-theft bolt in, comprises double-screw bolt, nut, thimble, it is characterized in that: on described double-screw bolt, have through hole; In described through hole, be provided with internal thread; Described thimble is positioned at through hole; Described thimble is provided with outside thread.
2. thimble anti-theft bolt in one as claimed in claim 1, is characterized in that: described thimble outside thread and through hole screw-internal thread fit.
3. thimble anti-theft bolt in one as claimed in claim 1, is characterized in that: described thimble front end is for conical.
4. thimble anti-theft bolt in one as claimed in claim 1, is characterized in that: described thimble rear end is provided with special impression.
5. thimble anti-theft bolt in one as claimed in claim 1, is characterized in that: described thimble length is less than described through hole length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199386.9U CN203796720U (en) | 2014-04-21 | 2014-04-21 | Anti-theft bolt with inner thimble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199386.9U CN203796720U (en) | 2014-04-21 | 2014-04-21 | Anti-theft bolt with inner thimble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796720U true CN203796720U (en) | 2014-08-27 |
Family
ID=51378933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199386.9U Expired - Fee Related CN203796720U (en) | 2014-04-21 | 2014-04-21 | Anti-theft bolt with inner thimble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796720U (en) |
-
2014
- 2014-04-21 CN CN201420199386.9U patent/CN203796720U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150421 |
|
| EXPY | Termination of patent right or utility model |