CN204921609U - Modified self -tapping screw - Google Patents
Modified self -tapping screw Download PDFInfo
- Publication number
- CN204921609U CN204921609U CN201520683830.9U CN201520683830U CN204921609U CN 204921609 U CN204921609 U CN 204921609U CN 201520683830 U CN201520683830 U CN 201520683830U CN 204921609 U CN204921609 U CN 204921609U
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- nut
- tapping screw
- utility
- 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
Abstract
The utility model relates to a screw especially relates to a modified self -tapping screw. The utility model provides a modified self -tapping screw, includes nut, screw rod, be equipped with the linkage segment between nut and the screw rod, the lower extreme of screw rod is equipped with the screwhead, and the outer fringe of screw rod is equipped with tapping screw thread, be equipped with between the adjacent tapping screw thread soon to revolving to the screw thread of assisting on the contrary with tapping screw thread, the below of nut is equipped with the square washer. The utility model has the advantages that: the utility model discloses a self -tapping screw, processing is simple and convenient, and the assembly is simple, and anti -skidding effect is showing, and the cutting dynamics is big, excellent in use effect.
Description
Technical field
The utility model relates to a kind of screw, particularly relates to a kind of tapping screw of improvement.
Background technique
Screw is the fastening piece for mounting article, and it uses comparatively extensive, usually screw is mounted to fixation and with in the screw of fixture articles, just can implements to fix.Tapping screw comprises the head of a nail and rivet nut, its head of a nail has yi word pattern or cross is begun to speak, and is convenient to install, its rivet nut has screw thread, and screw thread is arranged in rivet nut in the shape of a spiral, screw court is rotated in the same direction during installation, screw can be screwed in object, to install related item.The occasion used at some screws at present, in order to avoid screw cap be exposed to that outside causes unsightly or the potential safety hazard brought, people normally knock screw head, be embedded into physical internal, this way, one is that workload is large, inefficiency, two is also can damage screw head.Therefore, a kind of new technological scheme should be provided to solve the problem.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, the tapping screw of the improvement that using effect is good.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of tapping screw of improvement, comprise nut, screw rod, the outer rim of described screw rod is provided with Thread Forming TF, the secondary attack screw thread that rotation direction is contrary with Thread Forming TF rotation direction is provided with between adjacent Thread Forming TF, described screw rod upper end has the screw rod joint concaved, the lower end of nut has outstanding nut joint, and described screw rod joint is the female screw of tool, and described nut joint is for having externally threaded connecting rod.
Described nut is provided with handle.
The outer surface of described screw rod is provided with the anti-bite dead layer of one deck teflon.
Due to the application of technique scheme, the utility model compared with prior art tool has the following advantages:
Tapping screw of the present utility model, processes easy, and assembling is simple, and can realize screw head easily and leak outside, screw cutting great efforts, have decay resistance simultaneously, and long service life is applied widely.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation.
In above accompanying drawing: 1, nut, 2, screw rod, 3, screw rod joint, 4, nut joint, 5, Thread Forming TF, 6, secondary attack screw thread, 7, handle, 8, the anti-bite dead layer of teflon.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment one:
As shown in Figure 1, the tapping screw of a kind of improvement of the utility model, comprise nut 1, screw rod 2, the outer rim of screw rod 2 is provided with Thread Forming TF 5, be provided with the secondary attack screw thread 6 that rotation direction is contrary with Thread Forming TF 5 rotation direction between adjacent Thread Forming TF 5, screw rod 2 upper end has the screw rod joint 3 concaved, and the lower end of nut 1 has outstanding nut joint 4, described screw rod joint 3 is the female screw of tool, and described nut joint 4 is for having externally threaded connecting rod.
Preferably, as an embodiment, described nut 1 is provided with handle 7.
Preferably, as another embodiment, the outer surface of described screw rod 2 is provided with the anti-bite dead layer 8 of one deck teflon.
Tapping screw of the present utility model, processes easy, and assembling is simple, first nut 1 and screw rod 2 is combined in use, and the screw after combination is hung in article to be connected by recycling screw-driver, then takes out nut, can realize screw head easily and leak outside.The setting of handle 7, can person easy to use convenient, easily take out nut 1.Tapping screw of the present utility model, the outer rim of screw rod 2 is provided with Thread Forming TF 5, and be provided with the secondary attack screw thread 6 that rotation direction is contrary with Thread Forming TF 5 rotation direction between adjacent Thread Forming TF 5, such structural design can improve the cutting dynamics in screw rod installation process.The outer surface of screw rod 2 is provided with the anti-bite dead layer 8 of one deck teflon, and the anti-bite dead layer 8 of teflon can completely cut off the chance that screw rod 2 directly contacts with corrosive corporation, extends the working life of screw.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvement or replacement, these improve or replace and also should be considered as protection domain of the present utility model.
Claims (3)
1. the tapping screw improved, it is characterized in that: comprise nut (1), screw rod (2), the outer rim of described screw rod (2) is provided with Thread Forming TF (5), the secondary attack screw thread (6) that rotation direction is contrary with Thread Forming TF rotation direction is provided with between adjacent Thread Forming TF (5), described screw rod (2) upper end has the screw rod joint (3) concaved, the lower end of nut (1) has outstanding nut joint (4), described screw rod joint (3) is the female screw of tool, described nut joint (4) is for having externally threaded connecting rod.
2. the tapping screw of a kind of improvement according to claim 1, is characterized in that: described nut (1) is provided with handle (7).
3. the tapping screw of a kind of improvement according to claim 1, is characterized in that: the outer surface of described screw rod (2) is provided with the anti-bite dead layer of one deck teflon (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683830.9U CN204921609U (en) | 2015-09-06 | 2015-09-06 | Modified self -tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683830.9U CN204921609U (en) | 2015-09-06 | 2015-09-06 | Modified self -tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921609U true CN204921609U (en) | 2015-12-30 |
Family
ID=54970740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520683830.9U Expired - Fee Related CN204921609U (en) | 2015-09-06 | 2015-09-06 | Modified self -tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921609U (en) |
-
2015
- 2015-09-06 CN CN201520683830.9U patent/CN204921609U/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: 20151230 Termination date: 20170906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |