CN2459475Y - Self-tapping screw structure - Google Patents
Self-tapping screw structure Download PDFInfo
- Publication number
- CN2459475Y CN2459475Y CN 00266718 CN00266718U CN2459475Y CN 2459475 Y CN2459475 Y CN 2459475Y CN 00266718 CN00266718 CN 00266718 CN 00266718 U CN00266718 U CN 00266718U CN 2459475 Y CN2459475 Y CN 2459475Y
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- screw
- spiral
- termination
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model relates to a self-tapping screw structure, which is composed of a screw body 1, a rod body 10, a screw head 11, spiral cross grains 12, and a tip-shaped terminal 13, wherein, the rod body 10 with spiral grains is arranged between the screw head 11 of the screw body 1 and the spiral cross grains 12 which are provided with a plurality of corner surfaces and sharp corners; the bottom of the screw body 1 is provided with the tip-shaped terminal 13. Therefore, a screw can be easily locked and easily cut to achieve the effects of shock resistance and difficult desquamation.
Description
The utility model relates to mechanical, particularly a kind of self tapping screw structure.
General common self tapping screw, it is the screw terminal that above body, is provided with for the clamping of instrument fit for turn, and for using this physical efficiency to screw in ferrous materials, its body stage casing is provided with the cylindrical screw bar, and the termination, below is provided with for the groove that cuts in a side, the common screw of this kind is because structural design is improper, therefore its cutting is to be whole contact in the self tapping process, therefore need with sizable strength turn, and because of body does not have any support, so be easy to cause loose or dislocation, be difficult for fastening, more can't be shockproof, this all shortcoming is perplexing people for a long time always.
The purpose of this utility model is exactly all shortcomings that exist at above-mentioned common self tapping screw, and a kind of self tapping screw structure is provided.
Technical conceive of the present utility model:
According to the purpose of this utility model, a kind of self tapping screw structure is provided, mainly be between screw terminal and spiral twill, establish the body of rod with spiral, the bottom of body then is made as pointed termination, makes screw when sealed ferrous materials, is easy to screw-in, fastening; Extend to the pointed termination of body bottom at the spiral twill, the cutting after being beneficial to screw in makes the turn of screw more laborsaving.
Accompanying drawings structure of the present utility model and embodiment:
Fig. 1 is a three-dimensional appearance schematic representation of the present utility model.
Fig. 2 is a front elevational schematic of the present utility model.
Fig. 3 is embodiment's schematic representation of the present utility model.
1 is that screw body, 10 is that the body of rod, 11 is that screw terminal, 12 is that spiral twill, 13 is pointed termination.
Shown in accompanying drawing 1 and accompanying drawing 2, the utility model is made of screw body 1, the body of rod 10, screw terminal 11, spiral twill 12, pointed termination 13, wherein above body 1, be provided with screw terminal 11 for the rotation of tool holding fit, the below then is provided with the spiral twill 12 of screw rod body 10 and polygonal mask wedge angle, and establish with pointed termination 13 in the bottom of body 1, make this spiral twill 12 extend to this termination 13; Because the spiral twill 12 on this polygonal mask wedge angle limit is to extend to pointed termination 13 by the body of rod 10, make screw body 1 when locking materials such as iron and steel, be able to more easily lock by its termination 13, and make it be easy to cutting by spiral twill 12, and it is quite laborsaving, and after locking, have more support force, and be difficult for loose or dislocation.
As shown in Figure 3, be another embodiment of the present utility model, it is in the screw terminal 11 of screw body 1 and pointed termination 13, establishes the spiral twill 12 with whole section polygonal mask wedge angle limit, makes it have more snap-in force, is applicable to that different material-structures is sealed.
The utility model is simple in structure, and the bottom of screw body is provided with pointed termination, and makes the spiral twill extend to this pointed termination, thus easier turn, sealed, and laborsaving.
Claims (2)
1, a kind of self tapping screw structure, it is made of screw body (1), the body of rod (10), screw terminal (11), spiral twill (12), pointed termination (13), it is characterized in that being provided with the screw terminal (11) that rotates for the tool holding fit in screw body (1) top, the below then is provided with the spiral twill (12) of screw rod body (10) and polygonal mask wedge angle and establishes with pointed termination (13) in the bottom of body, makes this spiral twill (12) extend to this termination (13).
2, according to the described a kind of self tapping screw structure of claim 1, be characterised in that altogether between the screw terminal (11) and pointed termination (13) of said screw body (1), be provided with the spiral twill (12) on whole section polygonal mask wedge angle limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00266718 CN2459475Y (en) | 2000-12-18 | 2000-12-18 | Self-tapping screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00266718 CN2459475Y (en) | 2000-12-18 | 2000-12-18 | Self-tapping screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2459475Y true CN2459475Y (en) | 2001-11-14 |
Family
ID=33620730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00266718 Expired - Fee Related CN2459475Y (en) | 2000-12-18 | 2000-12-18 | Self-tapping screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2459475Y (en) |
-
2000
- 2000-12-18 CN CN 00266718 patent/CN2459475Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |