CN205956153U - Self -tapping screw - Google Patents
Self -tapping screw Download PDFInfo
- Publication number
- CN205956153U CN205956153U CN201620915957.3U CN201620915957U CN205956153U CN 205956153 U CN205956153 U CN 205956153U CN 201620915957 U CN201620915957 U CN 201620915957U CN 205956153 U CN205956153 U CN 205956153U
- Authority
- CN
- China
- Prior art keywords
- cutting
- tapping screw
- section
- segment
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a self -tapping screw, including head and pole portion, pole portion includes the cutting section that is equipped with cylindricality section, the toper section of external screw thread and has rotary cutter, cylindricality body one end with the head is connected, the other end with the major diameter end of toper section is connected, the minor diameter of toper section end with cutting section one end is connected, cutting end outside diameter is less than the cylindricality section, the cutting section comprises multiunit rotary cutting sword, be formed with the runner groove between the rotatory orbit of cutting cutting part. The utility model discloses a self -tapping screw, have novel structure, easy and simple to handle, save process, labour saving and time saving, reduce cost, raise the efficiency, advantages such as safe and reliable, long service life, convenient and practical, have extensive market prospect in self -tapping screw's popularization.
Description
Technical field
The utility model is related to a kind of screw and in particular to a kind of tapping screw, belongs to technical field of fastening.
Background technology
Popularize more mobile phone in recent years, in the electric equipment products such as laptop computer and portable music player, light from it
Re-quantization, miniaturization and processability well from the point of view of many made using aluminium alloy.Mounted thereon part needs using a lot
Screw.
The termination of general tapping screw is (most advanced and sophisticated) to be reduced overall diameter and extends, but the processing in the slim material such as aluminium alloy
In, the pitch of the tapping screw of prior art and screw diameter are than for 1：2.5-4 ；Fastening 1mm about aluminium alloy slim
The effect of material is bad, and comparatively, tapping screw pitch is wide, and such as using the tapping screw of minor diameter, tightening force is also inadequate.
Above-mentioned prior art fails to solve this problem.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that prior art exists, there is provided a kind of filtration is abundant, and anticorrosion
Reusable efficient aramid fiber slurry filter capable of washing.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is：A kind of tapping screw, including head and bar
Portion, described bar portion includes being provided with externally threaded cylindrical portion, conical section and the segment of cutting with peeling knife；Described cylindrical portion one end with
Described head connects, and the other end is connected with the major diameter end of described conical section；The minor axis end of described conical section and described segment of cutting one
End connects；Described segment of cutting outside diameter is less than described cylindrical portion；Described segment of cutting is made up of multigroup rotary cutting sword, institute
State and be formed with flow path groove between cutting edge portion rotational trajectory.
Preferably, in the end of described segment of cutting and be located at described multigroup rotary cutting sword between place be provided with alloy pressure head.
Preferably, described cutting edge section external diameter is 5-10mm.
Preferably, the inner face of described head is recessed arc groove face positioned at described thread rod part junction periphery；Institute
State arc groove face and be provided with the annular vent groove and multiple insert-molding circular permanent magnet in arc groove face.
Preferably, described annular vent groove has two groups, interval setting and being interconnected.
Preferably, described circular permanent magnet has multiple, and ringwise angularly array.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages：
Tapping screw of the present utility model, have structure novel, easy and simple to handle, save operation, time saving and energy saving, reduce into
This, improve efficiency, safe and reliable, long service life, convenient and practical the advantages of, extensive city is had on the popularization of tapping screw
Field prospect.
Brief description
Below in conjunction with the accompanying drawings technical solutions of the utility model are described further：
Accompanying drawing 1 is the structural representation of tapping screw of the present utility model；
Accompanying drawing 2 is overlooking the structure diagram of the present utility model；
Wherein：1- head；2- bar portion；3- cylindrical portion；4- conical section；5- segment of cutting；6- peeling knife；7- rotary cutting sword；
8- flow path groove；9- alloy pressure head；11- arc groove face；12- annular vent groove；13- circular permanent magnet.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
As shown in accompanying drawing 1,2, a kind of tapping screw described in the utility model, including head 1 and bar portion 2, bar portion 2 includes
It is provided with externally threaded cylindrical portion 3, conical section 4 and the segment of cutting 5 with peeling knife 6；Cylindrical portion 3 one end is connected with described head 1,
The other end is connected with the major diameter end of described conical section 4；The minor axis end of described conical section 4 is connected with described segment of cutting 5 one end；Described
Segment of cutting 5 outside diameter is less than described cylindrical portion 3；Described segment of cutting 5 is made up of multigroup rotary cutting sword 7, cutting edge section
External diameter is 5mm；In the end of segment of cutting 5 and be located at described multigroup rotary cutting sword 7 between place be provided with alloy pressure head 9.This practicality
In new, preliminary crush-cutting can be carried out to processing workpiece in the design of end alloy pressure head 9 and cut, then the rotary cutting by segment of cutting
Sword 7 enters poroid needed for thick tapping, significantly reduces the resistance during screw precession.
It is formed with flow path groove 8 between 7 rotational trajectories of cutting edge, the material entering fashionable generation in screw self tapping is considered to be worth doing from runner
Groove 8 flows out.
Head 1 inner face in the present embodiment is recessed arc groove face 11；Arc groove face 11 is provided with two groups of intervals and sets
Putting and be interconnected, in arc groove face and ringwise angularly the circle of array is forever for annular vent groove 12 and multiple insert-molding
Magnet 13.
Designed by arc groove face 11 and annular vent groove 12, fastening when by its contact surface between air arrange as far as possible
Go out, so formed negative pressure after, then in the presence of circular permanent magnet 13 so as to can be even closer be fixed on fixation,
Can not only effectively prevent from loosening during transport or use, and increased fastening performance, increased the safe and reliable of transport
Property, such that it is able to avoid causing security incident.
The above is only concrete application example of the present utility model, any limit is not constituted to protection domain of the present utility model
System.All employing equivalents or equivalence replacement and the technical scheme that formed, all fall within the utility model rights protection scope it
Interior.
Claims (6)
1. a kind of tapping screw, including head and bar portion it is characterised in that：Described bar portion include being provided with externally threaded cylindrical portion,
Conical section and the segment of cutting with peeling knife；Described cylindrical portion one end is connected with described head, the other end and described conical section
Major diameter end connects；The minor axis end of described conical section is connected with described segment of cutting one end；Described segment of cutting outside diameter is less than described
Described cylindrical portion；Described segment of cutting is made up of multigroup rotary cutting sword, is formed with runner between described cutting edge portion rotational trajectory
Groove.
2. tapping screw according to claim 1 it is characterised in that：In the end of described segment of cutting and positioned at described multigroup
Between rotary cutting sword, place is provided with alloy pressure head.
3. tapping screw according to claim 1 and 2 it is characterised in that：Described cutting edge section external diameter is 5-10mm.
4. tapping screw according to claim 3 it is characterised in that：The inner face of described head is located at described thread rod part
Junction periphery is recessed arc groove face；Described arc groove face is provided with annular vent groove and multiple insert-molding in deep-slotted chip breaker
Circular permanent magnet in face.
5. a kind of tapping screw according to claim 4 it is characterised in that：Described annular vent groove has two groups, interval
Arrange and be interconnected.
6. according to a kind of tapping screw according to claim 5 it is characterised in that：Described circular permanent magnet have multiple,
And ringwise angularly array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620915957.3U CN205956153U (en) | 2016-08-22 | 2016-08-22 | Self -tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620915957.3U CN205956153U (en) | 2016-08-22 | 2016-08-22 | Self -tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956153U true CN205956153U (en) | 2017-02-15 |
Family
ID=57978232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620915957.3U Expired - Fee Related CN205956153U (en) | 2016-08-22 | 2016-08-22 | Self -tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089904A (en) * | 2016-08-22 | 2016-11-09 | 苏州市顺仪五金有限公司 | A kind of tapping screw |
-
2016
- 2016-08-22 CN CN201620915957.3U patent/CN205956153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089904A (en) * | 2016-08-22 | 2016-11-09 | 苏州市顺仪五金有限公司 | A kind of tapping screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170215 Termination date: 20170822 |