CN202789967U - Square head screw - Google Patents
Square head screw Download PDFInfo
- Publication number
- CN202789967U CN202789967U CN 201220507970 CN201220507970U CN202789967U CN 202789967 U CN202789967 U CN 202789967U CN 201220507970 CN201220507970 CN 201220507970 CN 201220507970 U CN201220507970 U CN 201220507970U CN 202789967 U CN202789967 U CN 202789967U
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- CN
- China
- Prior art keywords
- screw
- screw cap
- square
- cross
- section
- 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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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses a square head screw which is formed by connecting a screw cap and a bolt. Threads are arranged on the bolt, the cross section of the screw cap perpendicular to a central axis is square, the edge on the upper end face of the screw cap has a 45-degree chamfer, and a round groove is arranged at the center on the upper end face of the screw cap. By means of the structure, the cross section of the screw cap perpendicular to the central axis is square, so that a user can hold the screw cap through tools like a wrench to achieve screwing up and disassembly of the screw. The screw cap with the cross section of a square structure is not easy to abrade or damage, so that the square head screw effectively prolongs service life.
Description
Technical field
The utility model belongs to fastener areas, is specifically related to a kind of square headed screw.
Background technique
Screw is connected and composed by screw cap and screw rod usually, described screw rod is provided with screw thread, and the screw cap of existing screw is generally circular arc, and offer in-line groove or cross groove thereon on the end face, tighten or dismantle with cooperating of corresponding screw-driver with realization, but in actual use, in-line groove or cross groove are easy to be worn, cause with the screw-driver head and skid, thereby cause screw again to be tightened or to dismantle, cause shorten the working life of screw.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of working life long square headed screw.
For achieving the above object, the utility model provides a kind of square headed screw, is connected and composed by screw cap and screw rod, and described screw rod is provided with screw thread, and the cross section of described screw cap vertical centre axis is square.
The beneficial effects of the utility model are: adopt said structure, because the screw cap of screw provided by the utility model, the cross section of its vertical centre axis is square, therefore the user can grip screw cap by instruments such as spanners, to realize tightening and dismantling of screw, be difficult for being worn or destroying because cross section is the screw cap of square structure, therefore effectively prolonged the working life of screw.
The upper-end surface seamed edge that the utility model can further be set to described screw cap is 45 degree chamferings.
The center, upper-end surface that the utility model also can further be set to described screw cap offers circular groove.
Adopt said structure, set up circular groove, can reduce the making raw material of screw cap, reduce production costs.
Description of drawings
Fig. 1 is plan view of the present utility model;
Fig. 2 is plan view of the present utility model.
Embodiment
Provided as shown in Figure 1, 2 a kind of square headed screw, connected and composed by screw cap 1 and screw rod 2, described screw rod 2 is provided with screw thread, the cross section of described screw cap 1 vertical centre axis is square, and the upper-end surface seamed edge 11 of described screw cap 1 is 45 degree chamferings, and the center, upper-end surface of screw cap 1 offers circular groove 12.
Adopt said structure, because the screw cap 1 of screw provided by the utility model, the cross section of its vertical centre axis is square, therefore the user can grip screw cap 1 by instruments such as spanners, to realize tightening and dismantling of screw, be difficult for being worn or destroying because cross section is the screw cap 1 of square structure, therefore effectively prolonged the working life of screw.
Claims (3)
1. a square headed screw is connected and composed by screw cap and screw rod, and described screw rod is provided with screw thread, it is characterized in that: the cross section of described screw cap vertical centre axis is square.
2. a kind of square headed screw according to claim 1 is characterized in that: the upper-end surface seamed edge of described screw cap is 45 degree chamferings.
3. a kind of square headed screw according to claim 1 and 2, it is characterized in that: the center, upper-end surface of described screw cap offers circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507970 CN202789967U (en) | 2012-09-27 | 2012-09-27 | Square head screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507970 CN202789967U (en) | 2012-09-27 | 2012-09-27 | Square head screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789967U true CN202789967U (en) | 2013-03-13 |
Family
ID=47817233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220507970 Expired - Fee Related CN202789967U (en) | 2012-09-27 | 2012-09-27 | Square head screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201982A (en) * | 2015-10-19 | 2015-12-30 | 无锡市永亿精密铸造有限公司 | Linear square screw |
-
2012
- 2012-09-27 CN CN 201220507970 patent/CN202789967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201982A (en) * | 2015-10-19 | 2015-12-30 | 无锡市永亿精密铸造有限公司 | Linear square screw |
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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: 20130313 Termination date: 20130927 |