CN202431697U - Multi-section screw - Google Patents
Multi-section screw Download PDFInfo
- Publication number
- CN202431697U CN202431697U CN201120528436XU CN201120528436U CN202431697U CN 202431697 U CN202431697 U CN 202431697U CN 201120528436X U CN201120528436X U CN 201120528436XU CN 201120528436 U CN201120528436 U CN 201120528436U CN 202431697 U CN202431697 U CN 202431697U
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- drill bit
- multistage
- screw stem
- 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 relates to a multi-section screw, which is characterized by comprising a screw head and a screw stem, wherein the front end of the screw stem is additionally provided with a drill bit; thread is arranged on the outer wall of the screw stem; a transition clamping edge is arranged between the screw head and the screw stem; the diameter of the right edge of the drill bit is less than the diameter of the screw stem; the right edge of the drill bit and the screw stem form a step shape; and an included angle a is formed by the transition clamping edge and the axis of the screw stem and has a size range of 50-75 degrees. The multi-section screw has the advantages of reducing rotation torque, being more easily screwed into a nailed object and increasing internal engagement force.
Description
Technical field
The utility model relates to a kind of screw, and it is easier especially to relate to a kind of nail, dress of making, and increases the multistage screw of inner snap-in force.
Background technique
General common screw commonly used all is directly to comprise screw head and screw rod, through the effect of external force; Suppress by force at interior of articles, in the needs dismounting, can just can very easily screw be extracted, do not have the effect of nail, dress at all with common bottle opener; And; The external force that needs is very big, is not easy to pound partially if screw is set upright, and also is easy to injure by a crashing object finger.Summary of the invention
The utility model technical problem to be solved provides a kind of through screw thread rotation, reduces the precession moment of torsion, and the multistage screw with strong snap-in force.
The technological scheme that its technical problem of the utility model solution is taked is: a kind of multistage screw; Said multistage screw comprises screw head and screw rod; Front end at said screw rod is equipped with drill bit, and said screw rod outer wall offers screw thread, is provided with the transition edge between said screw head and the screw rod.
In order to reduce the resistance that screw head receives object, increase its precessing force, said drill bit the right diameter forms stepped on drill bit the right with screw rod less than the diameter of screw rod.
In order to prevent that screw from can be extracted by bottle opener easily, the shaft axis of said transition edge and screw rod forms angle a, and the magnitude range of this angle a is 50-75 °, skids when making bottle opener contact screw head.
The beneficial effect of the utility model is: the utility model multistage screw reduces rotation torque, and the rotation that can be more prone to is advanced by in the nail object, and strengthens inner snap-in force.
Description of drawings
Fig. 1 is the utility model schematic representation of apparatus.
Among the figure: 1, drill bit 2, screw rod 3, transition edge 4, screw head 5, screw thread.
Embodiment
A kind of multistage screw shown in Figure 1, said multistage screw comprise screw head 4 and screw rod 2, are equipped with drill bit 1 at the front end of said screw rod 2, and said screw rod 2 outer walls offer screw thread 5, are provided with transition edge 3 between said screw head 4 and the screw rod 2.
In order to reduce the resistance that screw head 4 receives object, increase its precessing force, said drill bit 1 the right diameter forms stepped less than the diameter of screw rod 2 on drill bit 1 the right and screw rod 2.
In order to prevent that screw from can be extracted by bottle opener easily, said transition edge 3 forms angle a with the shaft axis of screw rod 2, and the magnitude range of this angle a is 50-75 °, skids when making bottle opener contact screw head.
The utility model multistage screw reduces rotation torque, and the rotation that can be more prone to is advanced by in the nail object, and strengthens inner snap-in force.
It is emphasized that: above only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Every technical spirit according to the utility model all still belongs in the scope of the utility model technological scheme any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. multistage screw; It is characterized in that: said multistage screw comprises screw head (4) and screw rod (2); Front end at said screw rod (2) is equipped with drill bit (1); Said screw rod (2) outer wall offers screw thread (5), is provided with transition edge (3) between said screw head (4) and the screw rod (2).
2. multistage screw according to claim 1 is characterized in that: said drill bit (1) the right diameter forms stepped on drill bit the right with screw rod less than the diameter of screw rod (2).
3. multistage screw according to claim 1 is characterized in that: said transition edge (3) forms angle a with the shaft axis of screw rod (2), and the magnitude range of this angle a is 50-75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120528436XU CN202431697U (en) | 2011-12-16 | 2011-12-16 | Multi-section screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120528436XU CN202431697U (en) | 2011-12-16 | 2011-12-16 | Multi-section screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431697U true CN202431697U (en) | 2012-09-12 |
Family
ID=46781144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120528436XU Expired - Fee Related CN202431697U (en) | 2011-12-16 | 2011-12-16 | Multi-section screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434560A (en) * | 2011-12-16 | 2012-05-02 | 吴江市黎里科龙铁艺装饰材料厂 | Multi-section screw |
| TWI668376B (en) * | 2014-12-12 | 2019-08-11 | 瑞典商艾斯維製造公司 | Concrete screw |
-
2011
- 2011-12-16 CN CN201120528436XU patent/CN202431697U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434560A (en) * | 2011-12-16 | 2012-05-02 | 吴江市黎里科龙铁艺装饰材料厂 | Multi-section screw |
| TWI668376B (en) * | 2014-12-12 | 2019-08-11 | 瑞典商艾斯維製造公司 | Concrete 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: 20120912 Termination date: 20121216 |