CN206190685U - Cross sphere self -tapping screw - Google Patents
Cross sphere self -tapping screw Download PDFInfo
- Publication number
- CN206190685U CN206190685U CN201621264688.5U CN201621264688U CN206190685U CN 206190685 U CN206190685 U CN 206190685U CN 201621264688 U CN201621264688 U CN 201621264688U CN 206190685 U CN206190685 U CN 206190685U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- nut
- guide part
- screw
- cross
- 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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- Connection Of Plates (AREA)
Abstract
The utility model relates to a cross sphere self -tapping screw, including nut, screw rod, the up end of nut be circular arc camber, and be provided with the cross recess on the up end of nut, nut and screw rod between be provided with the step, be provided with the transition chamfer between step and the screw rod, the screw rod include external screw thread portion and guide part, the diameter of section of external screw thread portion is greater than the diameter of section of guide part, is provided with the external screw thread in the external screw thread portion, the front end of guide part is provided with the direction chamfer. The utility model has the advantages of simple structure, convenient, the high strength of installation, stable performance are reliable.
Description
Technical field
The utility model is related to technical field of fastening, and in particular to a kind of cross-shaped spherical tapping screw.
Background technology
Tapping screw is voluntarily to attack to get out one kind of negative thread joined together and have in the prebored hole of metal or nonmetallic materials
Threaded fasteners.Tapping screw is used for the connection between thin metallic plate (steel plate, saw plate etc.).During connection, first to connected piece
Thread Pilot hole is made, then tapping screw is screwed into the thread Pilot hole of connected piece.However, existing tapping screw is present installing
The insecure defect of not convenient, performance.
The content of the invention
The purpose of this utility model is the defect for overcoming prior art, there is provided a kind of simple structure, install convenient, high-strength
Degree, cross-shaped spherical tapping screw stable and reliable for performance.
To achieve the above object, the utility model uses a kind of cross-shaped spherical tapping screw, including nut, screw rod, described
Nut upper surface to be provided with cross recess on circular arc camber, and the upper surface of nut, set between described nut and screw rod
Step is equipped with, transition chamfering is provided between step and screw rod, described screw rod includes external thread part and guide part, external thread part
Diameter of section more than guide part diameter of section, external screw thread is provided with external thread part, the front end of guide part is provided with guiding
Chamfering.
The beneficial effects of the utility model are：Guide part, guide part are provided with the screw rod of the cross-shaped spherical tapping screw
Guide effect can be played, consequently facilitating the installation of the screw；And step is provided with the screw, so that screw rod does not allow frangibility,
And can play a part of positioning when assembling, so that the socket cap attachment screw has simple structure, install convenient, height
Intensity, advantage stable and reliable for performance.
Brief description of the drawings
Fig. 1 is the utility model embodiment stereogram.
Fig. 2 is the utility model embodiment front view.
Fig. 3 is the utility model embodiment top view.
Specific embodiment
As shown in Figures 1 to 3, the utility model embodiment is a kind of cross-shaped spherical tapping screw, including nut 10, screw rod
11, the upper surface of described nut 10 is to be provided with cross recess 101, described spiral shell on circular arc camber, and the upper surface of nut 10
Step 12 is provided between cap 10 and screw rod 11, transition chamfering 121, described screw rod 11 are provided between step 12 and screw rod 11
Including external thread part 111 and guide part 112, the diameter of section of the diameter of section more than guide part 112 of external thread part 111, outer spiral shell
External screw thread is provided with line portion 111, the front end of guide part 112 is provided with guiding chamfering 113.The spiral shell of the cross-shaped spherical tapping screw
Guide part is provided with bar, guide part can play guide effect, consequently facilitating the installation of the screw；And it is provided with platform on the screw
Rank, so that screw rod does not allow frangibility, and can play a part of positioning, so that the socket cap attachment screw has when assembling
There is simple structure, install convenient, high intensity, stable and reliable for performance.
Claims (1)
1. a kind of cross-shaped spherical tapping screw, including nut, screw rod, it is characterised in that：The upper surface of described nut is circular arc
Cross recess is provided with curved surface, and the upper surface of nut, step is provided between described nut and screw rod, step and screw rod it
Between be provided with transition chamfering, described screw rod includes external thread part and guide part, and the diameter of section of external thread part is more than guide part
Diameter of section, external screw thread is provided with external thread part, the front end of guide part is provided with guiding chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264688.5U CN206190685U (en) | 2016-11-22 | 2016-11-22 | Cross sphere self -tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264688.5U CN206190685U (en) | 2016-11-22 | 2016-11-22 | Cross sphere self -tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190685U true CN206190685U (en) | 2017-05-24 |
Family
ID=58724424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621264688.5U Expired - Fee Related CN206190685U (en) | 2016-11-22 | 2016-11-22 | Cross sphere self -tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340237A (en) * | 2018-11-06 | 2019-02-15 | 辽宁福瑞达建筑科技有限公司 | Self-positioning drilling tail nail |
-
2016
- 2016-11-22 CN CN201621264688.5U patent/CN206190685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340237A (en) * | 2018-11-06 | 2019-02-15 | 辽宁福瑞达建筑科技有限公司 | Self-positioning drilling tail nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20211122 |