CN202031946U - Antiskid expansion screw - Google Patents
Antiskid expansion screw Download PDFInfo
- Publication number
- CN202031946U CN202031946U CN2011200924228U CN201120092422U CN202031946U CN 202031946 U CN202031946 U CN 202031946U CN 2011200924228 U CN2011200924228 U CN 2011200924228U CN 201120092422 U CN201120092422 U CN 201120092422U CN 202031946 U CN202031946 U CN 202031946U
- Authority
- CN
- China
- Prior art keywords
- expansion
- screw
- expansion screw
- nut
- setscrew
- 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 provides an antiskid expansion screw. On the premise of not changing the other structures and components of an ordinary expansion screw, the end of a screw rod of the expansion screw, which is used for screwing a nut, is made into a cross recess or a linear recess through adopting a mechanical method; the matching between the outer threads of the screw rod of the expansion screw, which is provided with the cross recess or the linear recess, and the nut is not influenced; and all that is needed is to use a linear or a cross screwdriver to be matched with the expansion screw placed into an expansion hole when the expansion screw is used, at this time, the nut is tightened by a wrench, and the screw rod of the expansion screw does not rotate following with the nut as the direction of the screw rod of the expansion screw is fixed by the screwdriver, accordingly, the expansion of the expansion pipe is inevitable, and the problem that the screw rod of the expansion screw rotates following with the nut due to the dimension error of a drill bit of a churn drill and the expansion screw head is avoided. The utilization ratio and the safety performance of the expansion screw are greatly improved, and the cost performance is very high, and the expansion screw is simple and easy to manufacture.
Description
Technical field
The utility model relates to a kind of setscrew, especially a kind of anti-skidding setscrew.
Background technique
At present, the setscrew kind on the market is a lot, but in use, because the drill bit of percussion drill and the size error of setscrew head screw often might occur under the situation of not tightening, the screw mandrel of its setscrew and nut transfer cause trouble.
Summary of the invention
The utility model provides a kind of anti-skidding setscrew, and no matter the size error size of chopping bit and setscrew head can both well solve this type of problem.
The technological scheme that the invention for solving the technical problem adopted is: under all constant situation of other structure of common setscrew and parts, method with machinery of the screw mandrel nutting of setscrew is made cross recess or straight groove, the outer silk of screw mandrel of having made cross recess or straight groove setscrew is unaffected with cooperating of nut, only need during use to cooperate the setscrew of having put into inflation port with the screwdriver set of a word or crosshead, at this moment nut screws up with a wrench, because the screw mandrel of setscrew is lived direction surely by screwdriver set, thus the screw mandrel of setscrew not can with the nut transfer.At this moment expansion tube has to expand, also with regard to very simple this type of problem that solved.
The beneficial effects of the utility model are: change under the very little situation at the cost of production with common expansion, improved the utilization rate and the Safety performance of setscrew greatly.Has very high cost performance.
Description of drawings
Fig. 1 is a kind of plan view of anti-skidding setscrew.
1. screw mandrel of having made cross recess or straight groove setscrew, 2. nuts among the figure
Embodiment
Among Fig. 1, with all constant situation of other structure of common setscrew and parts under, method with machinery of the screw mandrel nutting of setscrew is made cross recess or straight groove, the outer silk of screw mandrel (1) of having made cross recess or straight groove setscrew is unaffected with cooperating of nut (2), only need during use to cooperate the setscrew of having put into inflation port with the screwdriver set of a word or crosshead, at this moment nut (2) screws up with a wrench, because the screw mandrel (1) of make cross recess or straight groove setscrew is by screwdriver set direction firmly surely, thus the screw mandrel of setscrew (1) not can with nut (2) transfer.Expansion tube has to expand, and has simply solved the original common setscrew screw mandrel and the problem of nut (2) transfer.
Claims (1)
1. an anti-skidding setscrew is characterized in that: a method with machinery of the screw mandrel nutting of setscrew is made cross recess or straight groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200924228U CN202031946U (en) | 2011-03-29 | 2011-03-29 | Antiskid expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200924228U CN202031946U (en) | 2011-03-29 | 2011-03-29 | Antiskid expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031946U true CN202031946U (en) | 2011-11-09 |
Family
ID=44894244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200924228U Expired - Fee Related CN202031946U (en) | 2011-03-29 | 2011-03-29 | Antiskid expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031946U (en) |
-
2011
- 2011-03-29 CN CN2011200924228U patent/CN202031946U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20120329 |