CN203979057U - Self tapping screw - Google Patents
Self tapping screw Download PDFInfo
- Publication number
- CN203979057U CN203979057U CN201420424822.8U CN201420424822U CN203979057U CN 203979057 U CN203979057 U CN 203979057U CN 201420424822 U CN201420424822 U CN 201420424822U CN 203979057 U CN203979057 U CN 203979057U
- Authority
- CN
- China
- Prior art keywords
- head
- tapping screw
- self tapping
- spiral shell
- rod
- 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.)
- Active
Links
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 37
- 239000002699 waste material Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002023 wood Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
- F16B35/065—Specially-shaped heads with self-countersink-cutting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0015—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a soft organic material, e.g. wood or plastic
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
A self tapping screw, it comprises a spiral shell head, a body of rod, and is formed at the drill bit of body of rod bottom and a spiralization in the threaded elements of body of rod outer surface.Spiral shell head has a head, and extends to form in lower head and the necking part being connected with body of rod one end, a plurality of compacting sword and a plurality of cutting edge that is convexly set in head bottom surface that is connected to necking part by head root edge arc, and each cutting edge lays respectively between two adjacent compacting swords.The waste material that this self tapping screw produces in the process of twist bit one object whereby, through the secondary cut effect of described compacting sword and described cutting edge and be broken state, and be compacted at the necking part periphery of self tapping screw, and make the head of spiral shell head can positively immerse oneself in object, it is smooth and attractive in appearance that object outer surface maintains, and can improve safety in utilization.
Description
Technical field
The utility model, relevant for a kind of screw, refers to a kind of self tapping screw especially.
Background technique
Consulting Fig. 1, is a kind of existing self tapping screw 1, and its structure design comprises a spiral shell head 11, a screw rod 12, a drill bit 13, and a spiralization is in the screw thread 14 of these screw rod 12 outer surfaces.These spiral shell head 11 bottoms convergent are formed with a necking part 111 and are connected with these screw rod 12 one end, and 13, this drill bit is to be formed at this screw rod 12 the other ends.When this self tapping screw 1 is during for a sealed timber 2, utilize a driving tool (not shown) to be sheathed on the spiral shell head 11 of this self tapping screw 1, and then drive this self tapping screw 1 to carry out spiral in this timber 2 to advance, to reach the effect of sealed timber 2.
Because the wood chip 21 producing in twist bit process can be pushed toward spiral shell head 11 directions along with the turn of screw thread 14, but because wood chip 21 is sheet long fibre, therefore easily chip removal is piled up in and bores mouthful 22 places, the wood chip 21 that bores mouthful 22 places along with the sinking to gradually this timber 2 of spiral shell head 11 to being positioned at produces the effect of pressing, further cause the necking part 111 of this spiral shell head 11 cannot imbed completely in this timber 2, this spiral shell head 11 also cannot be immersed oneself in this timber 2 completely and be convex, if now continue again application of force spiral, the wood chip 21 that is piled up in brill mouthful 22 places can be with powerful reaction force acts in boring mouth 22, can cause at last this timber 2 to crack, the wood chip 21 so exposing, spiral shell head 11 and the crackle of projection all can affect the attractive in appearance of this timber 2, and careless slightly spiral shell head 11 and protruding wood chip 21 scratches that expose that more easily suffer this self tapping screw 1 of personnel, safety in utilization is not good.
Model utility content
Therefore, the purpose of this utility model is to provide a kind of can make the certain compacting of waste material producing in twist bit process take in and not expose, and then can also improve the self tapping screw of safety in utilization.
The utility model self tapping screw, it comprises a spiral shell head, a body of rod, a drill bit and a threaded elements.This spiral shell head has a head, a compacting sword that extends to form the necking part in the below of this head, this necking part of a plurality of root edge arc by this head extension connection, and a plurality of cutting edges that are convexly set in the bottom surface of this head, each cutting edge is positioned between two adjacent compacting swords.One end of this body of rod connects the necking part of this spiral shell head.This drill bit is formed at the other end of this body of rod.This threaded elements spiralization is in the outer surface of this body of rod.
The utility model self tapping screw, the angle between the bottom surface of the head of described cutting edge and this spiral shell head is for being less than or equal to 90 degree.
The utility model self tapping screw, this threaded elements has first thread section and second thread section.
The beneficial effects of the utility model are, setting by described cutting edge and described compacting sword, can make this self tapping screw in the process of twist bit one object, the waste material producing first cuts for the first time through described compacting sword, then recycling described cutting edge cuts again to the described waste material having shortened, borrow simultaneously this spiral shell head head be sunken to down in this object gradually, so that be the necking part periphery that the waste material of broken state is compacted at this self tapping screw, the head of this spiral shell head also can positively be immersed oneself in this object, so, not only can make this object outer surface remain smooth and attractive in appearance, improve safety in utilization, also can improve the stability of this self tapping screw.
Accompanying drawing explanation
Fig. 1 is a schematic diagram, illustrates that a kind of existing self tapping screw is used aspect.
Fig. 2 is a schematic diagram, and an embodiment of the utility model self tapping screw is described.
Fig. 3 is a bottom view, illustrates that aspect is looked at this embodiment's the end.
Fig. 4 is a partial schematic diagram, and a kind of aspect of a plurality of cutting edges of this embodiment is described.
Fig. 5 is a partial schematic diagram, and the another kind of aspect of this embodiment's described cutting edge is described.
Fig. 6 is a partial schematic diagram, and another aspect of this embodiment's described cutting edge is described.
Fig. 7 is a use schematic diagram, and this embodiment's use aspect is described.
Embodiment
About aforementioned and other technology contents, feature and effect of the present utility model, in the following detailed description coordinating with reference to a graphic preferred embodiment, can clearly present.
Consult Fig. 2, Fig. 3, an embodiment of the utility model self tapping screw 3, it comprises a spiral shell head 31, a body of rod 32, a drill bit 33 and a threaded elements 34.This spiral shell head 31 has a head 311, and extends to form the necking part 312 in this head 311 belows, a plurality of compacting sword 313 that is extended this necking part 312 of connection by these head 311 root edge arcs, and a plurality of cutting edge 314 that is convexly set in these head 311 bottom surfaces.Each cutting edge 314 is positioned at 313 of two adjacent compacting swords.And the angle between head 311 bottom surfaces of described cutting edge 314 and this spiral shell head 31 is for being less than or equal to 90 degree, the aspect as shown in Fig. 4, Fig. 5, Fig. 6.
Continue and consult Fig. 2, these body of rod 32 one end connect the necking part 312 of this spiral shell head 31.33, this drill bit is to be formed at this body of rod 32 the other ends.In addition, 34 of this threaded elements are that spiralization is in these body of rod 32 outer surfaces.This threaded elements 34 has one first thread section 341, and one second thread section 342, but not as limit, this threaded elements 34 also can be single thread section.
Consult Fig. 3, Fig. 7, in the use, this self tapping screw 3 can be used for boring lock one object 4, and in the present embodiment, this object 4 is to explain with timber.This self tapping screw 3 is when twist bit, first with these drill bit 33 these object 4 surfaces of conflict, recycle the head 311 that a driving tool (not shown) is engaged in this self tapping screw 3, then drive this self tapping screw 3 to borrow these spiral unit 34 spirals to enter this object 4, when the compacting sword 313 on the necking part 312 of this self tapping screw 3 touches this object 4, can cut the wood chip 41 producing in twist bit process, wood chip 41 length are shortened, then recycling the wood chip 41 having shortened described in 314 pairs of described cutting edges cuts again, being sunken to down gradually in this object 4 by the head 311 of this spiral shell head 31 simultaneously, the wood chip 41 that is broken state be compacted to necking part 312 peripheries of this self tapping screw 3 and be embedded in completely in this object 4, the head 311 of this spiral shell head 31 also can positively be immersed oneself in this object 4, so not only this object 4 can not crack, and can make these object 4 outer surfaces remain smooth and attractive in appearance, and can improve safety in utilization.In addition, by wood chip 41, be compacted at necking part 312 peripheries of this self tapping screw 3, also can increase the stability of this self tapping screw 3.
In sum, the utility model self tapping screw 3 designs by above-mentioned structure, the waste material that can make this self tapping screw 3 produce in the process of this object 4 of twist bit, can successively through described compacting sword 313, cut for the first time, again cut with the waste material having shortened described in 314 pairs of described cutting edges, and the waste cut materials that makes to be broken state can be compacted at necking part 312 peripheries of this self tapping screw 3, the head 311 of this spiral shell head 31 also can positively be immersed oneself in this object 4, not only this object 4 can not crack, and can make these object 4 outer surfaces remain smooth and attractive in appearance, 31 scratches of spiral shell head that personnel also can not be protruded, thereby can improve safety in utilization.In addition, by the waste cut materials that is broken state, be compacted at necking part 312 peripheries of this self tapping screw 3, also can improve the stability of this self tapping screw 3.
The foregoing is only the utility model preferred embodiment; so it is not in order to limit scope of the present utility model; anyone familiar with this technology; within not departing from spirit and scope of the present utility model; can do on this basis further improvement and variation, the scope that claims were defined that therefore protection domain of the present utility model is worked as with the application is as the criterion.
Claims (3)
1. a self tapping screw, is characterized in that, comprises:
A spiral shell head, have a head, compacting sword and an a plurality of cutting edge that is convexly set in the bottom surface of this head that extends to form the necking part in the below of this head, this necking part of a plurality of root edge arc by this head extension connection, each cutting edge is positioned between two adjacent compacting swords;
A body of rod, one end of this body of rod connects the necking part of this spiral shell head;
A drill bit, is formed at the other end of this body of rod; And
A threaded elements, spiralization is in the outer surface of this body of rod.
2. self tapping screw according to claim 1, is characterized in that, the angle between the bottom surface of the head of described cutting edge and this spiral shell head is for being less than or equal to 90 degree.
3. according to self tapping screw described in claim 1 or 2, it is characterized in that, this threaded elements has first thread section and second thread section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424822.8U CN203979057U (en) | 2014-07-30 | 2014-07-30 | Self tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424822.8U CN203979057U (en) | 2014-07-30 | 2014-07-30 | Self tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979057U true CN203979057U (en) | 2014-12-03 |
Family
ID=51976509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420424822.8U Active CN203979057U (en) | 2014-07-30 | 2014-07-30 | Self tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422584A (en) * | 2016-01-11 | 2016-03-23 | 太仓市德浩紧固件有限公司 | Detachable drill tail screw |
| CN105972022A (en) * | 2015-03-11 | 2016-09-28 | 宽仕工业股份有限公司 | Screw for preventing cracking and raising |
-
2014
- 2014-07-30 CN CN201420424822.8U patent/CN203979057U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972022A (en) * | 2015-03-11 | 2016-09-28 | 宽仕工业股份有限公司 | Screw for preventing cracking and raising |
| CN105972022B (en) * | 2015-03-11 | 2017-12-19 | 宽仕工业股份有限公司 | Screw for preventing cracking and raising |
| CN105422584A (en) * | 2016-01-11 | 2016-03-23 | 太仓市德浩紧固件有限公司 | Detachable drill tail screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203979057U (en) | Self tapping screw | |
| CN103047245A (en) | Locking assembly with quick spin locking function | |
| CN204001795U (en) | A kind of multifunctional sax | |
| CN204128851U (en) | A kind of core drill boring core machine | |
| CN203470993U (en) | Drill bit | |
| CN204094223U (en) | Double helix two-edged slotting cutter | |
| CN206632460U (en) | One kind file perching knife | |
| CN203956868U (en) | A kind of engineering hammer | |
| CN203063519U (en) | Single-sided tool bit with decagonal spline hole of chisel | |
| CN204473503U (en) | A kind of canned fish boxing apparatus | |
| CN203557415U (en) | Paper cutter | |
| CN103741942A (en) | Hollow plastic building template | |
| CN204108961U (en) | A kind of engineering hammer | |
| CN203296349U (en) | Wall putty scraper | |
| CN201759617U (en) | Cutting knife of anastomat | |
| CN204238894U (en) | A kind of core drill of Novel drill core machine | |
| CN107264139A (en) | A kind of Novel pencil vase | |
| CN208246744U (en) | A kind of lightweight modified handle | |
| CN201635367U (en) | Multifunctional putty scraper | |
| CN206839246U (en) | A kind of drill bit | |
| CN207202539U (en) | One kind utilizes PVC furniture panels made of waste plastics | |
| CN203253978U (en) | Hard alloy twist drill | |
| CN203063497U (en) | Two-sided chisel head with internal decagonal pattern hole | |
| CN202903011U (en) | Sword | |
| TWM491097U (en) | Self-tapping screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |