CN102434560A - Multi-section screw - Google Patents
Multi-section screw Download PDFInfo
- Publication number
- CN102434560A CN102434560A CN2011104227449A CN201110422744A CN102434560A CN 102434560 A CN102434560 A CN 102434560A CN 2011104227449 A CN2011104227449 A CN 2011104227449A CN 201110422744 A CN201110422744 A CN 201110422744A CN 102434560 A CN102434560 A CN 102434560A
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- CN
- China
- Prior art keywords
- screw
- screw rod
- drill bit
- multistage
- head
- 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.)
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Abstract
The invention relates to a multi-section screw, which is characterized by comprising a screw head and a screw rod, wherein the front end of the screw rod is provided with a drill bit; the outer wall of the screw rod is provided with a thread; a transitional blocking edge is arranged between the screw head and the screw rod; the diameter of the right side of the drill bit is smaller than that of the screw rod; the right side of the drill bit and the screw rod form a step shape; and an included angle Alpha is formed between the transitional blocking edge and the axis line of the screw rod, wherein the included angle Alpha ranges from 50 DEG to 75 DEG. The multi-section screw disclosed by the invention is capable of reducing rotating torque, is easier to be screwed into a nailed object and is beneficial to increase of internal occlusion force.
Description
Technical field
The present invention relates to a kind of screw, 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
Technical problem to be solved by this invention provides a kind of through screw thread rotation, reduces the precession moment of torsion, and the multistage screw with strong snap-in force.
The present invention solves the technological scheme that its technical problem takes: 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 invention has the beneficial effects as follows: multistage screw of the present invention 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 schematic representation of apparatus of the present invention.
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.
Multistage screw of the present invention 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 preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technological scheme of the present invention 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 |
|---|---|---|---|
| CN2011104227449A CN102434560A (en) | 2011-12-16 | 2011-12-16 | Multi-section screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104227449A CN102434560A (en) | 2011-12-16 | 2011-12-16 | Multi-section screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434560A true CN102434560A (en) | 2012-05-02 |
Family
ID=45982832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104227449A Pending CN102434560A (en) | 2011-12-16 | 2011-12-16 | Multi-section screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434560A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285913A (en) * | 2019-07-19 | 2019-09-27 | 青岛四方庞巴迪铁路运输设备有限公司 | Bolt capable of detecting axial force of bolt and detection method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29621923U1 (en) * | 1996-12-17 | 1998-04-16 | Mitek Ind Gmbh | Timber structure connection system |
| EP0857879A1 (en) * | 1997-02-11 | 1998-08-12 | W.A. Deutsher Pty. Ltd. | Screw threaded fastener and fastening system |
| CN101054991A (en) * | 2006-04-13 | 2007-10-17 | 日本强力紧固件股份有限公司 | Self-tapping type bolt |
| JP2007298141A (en) * | 2006-05-02 | 2007-11-15 | Japan Power Fastening Co Ltd | Drill screw, and its manufacturing method |
| US20080019792A1 (en) * | 2003-10-10 | 2008-01-24 | Ernst Richard J | Drywall Fastener |
| AU2010200536A1 (en) * | 2010-02-12 | 2011-09-01 | Illinois Tool Works Inc. | Self-drilling screw |
| CN202431697U (en) * | 2011-12-16 | 2012-09-12 | 吴江市黎里科龙铁艺装饰材料厂 | Multi-section screw |
-
2011
- 2011-12-16 CN CN2011104227449A patent/CN102434560A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29621923U1 (en) * | 1996-12-17 | 1998-04-16 | Mitek Ind Gmbh | Timber structure connection system |
| EP0857879A1 (en) * | 1997-02-11 | 1998-08-12 | W.A. Deutsher Pty. Ltd. | Screw threaded fastener and fastening system |
| US20080019792A1 (en) * | 2003-10-10 | 2008-01-24 | Ernst Richard J | Drywall Fastener |
| CN101054991A (en) * | 2006-04-13 | 2007-10-17 | 日本强力紧固件股份有限公司 | Self-tapping type bolt |
| JP2007298141A (en) * | 2006-05-02 | 2007-11-15 | Japan Power Fastening Co Ltd | Drill screw, and its manufacturing method |
| AU2010200536A1 (en) * | 2010-02-12 | 2011-09-01 | Illinois Tool Works Inc. | Self-drilling screw |
| CN202431697U (en) * | 2011-12-16 | 2012-09-12 | 吴江市黎里科龙铁艺装饰材料厂 | Multi-section screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285913A (en) * | 2019-07-19 | 2019-09-27 | 青岛四方庞巴迪铁路运输设备有限公司 | Bolt capable of detecting axial force of bolt and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |