CN206647391U - Screw with two sections of helicitic textures - Google Patents
Screw with two sections of helicitic textures Download PDFInfo
- Publication number
- CN206647391U CN206647391U CN201720227363.8U CN201720227363U CN206647391U CN 206647391 U CN206647391 U CN 206647391U CN 201720227363 U CN201720227363 U CN 201720227363U CN 206647391 U CN206647391 U CN 206647391U
- Authority
- CN
- China
- Prior art keywords
- fin
- bar portion
- screw
- sections
- differs
- 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 discloses a kind of screw with two sections of helicitic textures, including head and bar portion, the bottom on head and the top of bar portion are connected, and external screw thread, the first fin and the second fin are provided with the excircle of bar portion；Helically line extends to the lower end of bar portion from the upper end of bar portion for first fin and the second fin；First fin differs 180 ° with the upper end of the second fin, and the first fin differs 180 ° with the lower end of the second fin；The upper end of first fin differs 360 ° with the lower end of the first fin, and the upper end of the second fin differs 360 ° with the lower end of the second fin.First fin and the second fin and bar portion are formed in one structure.The bottom of bar portion is provided with introduction part.The cross section of introduction part tapers into from top to bottom.The utility model effectively raises the tightness of screw, improves security performance.With the beneficial effect such as low with manufacturing cost simple in construction.
Description
Technical field
A kind of screw is the utility model is related to, specifically, more particularly to a kind of automobile using screw.
Background technology
For screw as one of parts essential on automobile, main function is by the part with through hole and with spiral shell
The part in hole is fixed together, and existing automobile using screw includes screw rod and head, and the thread pitch on screw rod is equal, makes
Used time, screw is directly screwed in into screw, so as to which two parts be fixedly connected, such connected mode, use a timing
After length, screw easily loosens, and is especially for use in this screw on automobile, is jolted by automobile, and screw even has
It may be come off among screw, security performance is poor.
Therefore those skilled in the art are directed to developing a kind of bolt structure with anti-loosening function.
Utility model content
In view of the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of with anti-
Loosen the bolt structure of function.
To achieve the above object, the utility model provides a kind of screw with two sections of helicitic textures, including head and
Bar portion, the bottom on the head are connected with the top of the bar portion, it is characterized in that：Outer spiral shell is provided with the excircle of the bar portion
Line, the first fin and the second fin；Helically line extends first fin from the upper end of the bar portion with second fin
To the lower end of the bar portion；First fin differs 180 ° with the upper end of second fin, first fin with it is described
The lower end of second fin differs 180 °；The upper end of first fin differs 360 ° with the lower end of first fin, and described
The upper end of two fins differs 360 ° with the lower end of second fin.
For the ease of manufacture, first fin and second fin and the bar portion are formed in one structure.
For the ease of importing.The bottom of the bar portion is provided with introduction part.
Preferably, the cross section of the introduction part tapers into from top to bottom.
The beneficial effects of the utility model are：The utility model effectively raises the tightness of screw, improves safety
Performance.With the beneficial effect such as low with manufacturing cost simple in construction.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model one.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples：
As shown in figure 1, a kind of screw with two sections of helicitic textures, including head 1 and bar portion 2, the bottom on the head 1
It is connected with the top of the bar portion 2, external screw thread, the first fin 3 and the second fin 4 is provided with the excircle of the bar portion 2；Institute
Stating the first fin 3 and second fin 4, helically line extends to the lower end of the bar portion 2 from the upper end of the bar portion 2；It is described
First fin 3 differs 180 ° with the upper end of second fin 4, and first fin 3 differs with the lower end of second fin 4
180°；The upper end of first fin 3 differs 360 ° with the lower end of first fin 3, the upper end of second fin 4 and institute
The lower end for stating the second fin 4 differs 360 °.
In the present embodiment, first fin 3 and second fin 4 and the bar portion 2 are formed in one structure.It is described
The bottom of bar portion 2 is provided with introduction part 5.The cross section of the introduction part tapers into from top to bottom.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member makes many modifications and variations without creative work can according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. a kind of screw with two sections of helicitic textures, including head（1）And bar portion（2）, the head（1）Bottom with it is described
Bar portion（2）Top connection, it is characterized in that：The bar portion（2）Excircle on be provided with external screw thread, the first fin（3）With
Two fins（4）；First fin（3）With second fin（4）Helically line is from the bar portion（2）Upper end extend to institute
State bar portion（2）Lower end；First fin（3）With second fin（4）Upper end differ 180 °, first fin
（3）With second fin（4）Lower end differ 180 °；First fin（3）Upper end and first fin（3）Under
360 ° of end difference, second fin（4）Upper end and second fin（4）Lower end differ 360 °.
2. there is the screw of two sections of helicitic textures as claimed in claim 1, it is characterized in that：First fin（3）With described
Two fins（4）With the bar portion（2）Be formed in one structure.
3. there is the screw of two sections of helicitic textures as claimed in claim 1 or 2, it is characterized in that：The bar portion（2）Bottom set
There is introduction part（5）.
4. there is the screw of two sections of helicitic textures as claimed in claim 3, it is characterized in that：The introduction part（5）Cross section from
Up to taper into down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720227363.8U CN206647391U (en) | 2017-03-10 | 2017-03-10 | Screw with two sections of helicitic textures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720227363.8U CN206647391U (en) | 2017-03-10 | 2017-03-10 | Screw with two sections of helicitic textures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206647391U true CN206647391U (en) | 2017-11-17 |
Family
ID=60281034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720227363.8U Expired - Fee Related CN206647391U (en) | 2017-03-10 | 2017-03-10 | Screw with two sections of helicitic textures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206647391U (en) |
-
2017
- 2017-03-10 CN CN201720227363.8U patent/CN206647391U/en not_active Expired - Fee Related
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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: 20171117 Termination date: 20210310 |