CN204267480U - A kind of triangular tooth flange pointed tail screw - Google Patents
A kind of triangular tooth flange pointed tail screw Download PDFInfo
- Publication number
- CN204267480U CN204267480U CN201420736336.XU CN201420736336U CN204267480U CN 204267480 U CN204267480 U CN 204267480U CN 201420736336 U CN201420736336 U CN 201420736336U CN 204267480 U CN204267480 U CN 204267480U
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- CN
- China
- Prior art keywords
- screw
- spiral shell
- tail
- flange
- screw 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of triangular tooth flange pointed tail screw, comprise spiral shell head, flange circle, lock tooth and screw rod, the first side of described spiral shell is provided with flange circle, be provided with some lock teeth around described flange circle, be provided with screw rod in the middle of flange circle, described screw rod is provided with outside thread, screw rod end is provided with spiral shell tail, described spiral shell tail is taper, and described lock tooth cross section is triangular in shape or semicircle, and the length of described spiral shell tail is 1/3rd of spiro rod length.Different parts can be fixedly connected with by the utility model, can penetrate interior of articles, also can be fixedly connected with by tapped hole, fixation, have good locking function, are not easy to come off.
Description
[technical field]
The utility model relates to the technical field of fastening piece, particularly a kind of technical field of triangular tooth flange pointed tail screw.
[background technique]
Starting commercialization from self tapping screw in 1914, through the development in more than 80 years, four periods can be divided into altogether-thread forming, thread cutting, screw thread are rolled into and certainly bore.Thread forming self tapping screw: must hole in advance when thread forming self tapping screw uses, then by screw advances through hole, strong force extruding coordinates female thread, and original material on female thread position will be pressed against between external screw thread, the thread forming self tapping screw of this meaning.Only be applicable to thin and there is the material of plasticity, therefore developing again; Thread cutting self tapping screw, cuts out one or more cutting mouth at the tail end of screw thread, enable when screwing in pre-drilled, utilizes screw afterbody and tooth portion to cut cooperation female thread in the mode of similar tap.It can be used in slab, the material that harder or frangible etc. is not easily moulded, screw thread is rolled into self tapping screw: be that the principle development of attacking based on shaped screw forms, and screw thread is rolled into self tapping screw and has the screw thread of particular design and tail end makes screw under interrupted pressure, can be rolled into the female thread of cooperation voluntarily.Material simultaneously around hole can fill up the space at the bottom of self tapping screw screw thread and tooth more easily, because its friction is little compared with thread forming self tapping screw, therefore can be used on thicker material, rotate required moment of torsion and better control, and after combination, intensity be higher.Screw thread is rolled into the definition of its engineering standard of self tapping screw than shaping or cut self tapping screw at material, and heat treatment, the definition in intensity is higher and more clear and definite, and making screw thread be rolled into self tapping screw becomes real " structure use " fastener.Bore tail self tapping screw: in all processes of assembling self tapping screw, most Expenses Cost be the preparation of pre-drilled.The use of self tapping screw, must first hole.And aperture also must limit.Cost can be saved in some aspects without the need to pre-drilled.Here it is, and collection bores, attacks, and is tightened in the brill tail self tapping screw of one-stop operation.Than general self tapping screw height a bit, this is because the many operations of a boring of SELF DRILLING SCREWS, SELF DRILLING SCREWS is still needed and is done piercing test in addition for the surface hardness of SELF DRILLING SCREWS and centre hardness, can hole at the appointed time and tap out in order to test screw.Above-mentioned is design and the evolution of four kinds of main self tapping screws, and separately have two kinds of screws designed for special thread, the first is; Height tooth self tapping screw, is used in plastics or other low density material.Two Design of Screw Thread, high screw thread (tooth portion external diameter is larger) has the screw type that more flat more sharp-pointed thread angle is 30 degree.Low thread (tooth portion external diameter is less) has the thread angle of one 60 degree, the high half only having high screw thread of tooth.The Combination Design of high low thread reduces rotation torque, improves pull off strength, significantly reduces the danger another kind that combination workpiece breaks and is used in the assembling purposes of universe wall in building industry.The self tapping screw with this type of Design of Screw Thread is particularly suitable for plastics, part plate and wood.Two screw thread is from boring tail head of the trumpet self tapping screw: can screw in Qian Qiang easily during assembling, from boring a hole and the female thread of tapping cooperation in iron and steel gear rack.The bearing surface that its head of the trumpet tool is recessed into can be unlikely to be corrupted to wallpaper or gypsum surface when screwing in.The self tapping screw of great majority all belongs to commercial use, such as, when self tapping screw provides with SEM screw SEM Scr (SEMS), can provide tightr service.Screw is conceived to assemble afterwards locking as having thickness screw thread particular design person.
Screw is common on the parts such as machinery, electrical equipment and building, be generally metal manufacture, cross section is rounded, there is screw thread on surface, by instrument bottle opener or the rotatable screw of spanner, outstanding spiral shell head makes screw can not be drilled too deeply and through material, can raising screw to a certain degree to the pressure of material, screw screw head in application process is easily out of shape, and head deflects.The not circle that the head of screw is beaten, screw has burr or burr, and screw head ftractures, and screw head has slight crack.Simultaneously when being applied in by screw on the larger equipment of vibrations, screw easily comes off, and market demand one is fixing reliable, and vibrations equipment is not easy to come off, screw firm in structure.
[model utility content]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of triangular tooth flange pointed tail screw, different parts can be fixedly connected with, can interior of articles be penetrated, also can be fixedly connected with by tapped hole, fixation, there is good locking function, be not easy to come off.
For achieving the above object, the utility model proposes a kind of triangular tooth flange pointed tail screw, comprise spiral shell head, flange circle, lock tooth and screw rod, the first side of described spiral shell is provided with flange circle, is provided with some lock teeth around described flange circle, screw rod is provided with in the middle of flange circle, described screw rod is provided with outside thread, and screw rod end is provided with spiral shell tail, and described spiral shell tail is taper, described lock tooth cross section is triangular in shape or semicircle, and the length of described spiral shell tail is 1/3rd of spiro rod length.
As preferably, the height of described lock tooth is 1 ~ 3mm, and lock tooth cross section is triangular in shape.
As preferably, described spiral shell cephalic region is provided with pit, and the degree of depth of described pit is 1 ~ 2mm.
As preferably, described spiral shell head cross section is Hexagon.
As preferably, the thickness of described flange circle is 2 ~ 4mm.
The beneficial effects of the utility model: the utility model, by arranging flange circle on spiral shell head, can making screw and parts fixation, be not easy to come off, by arranging spiral shell tail on screw rod, screw can be made to adapt to different work requirements, screw strong adaptability.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the plan view of a kind of triangular tooth flange of the utility model pointed tail screw;
Fig. 2 is the worm's eye view of a kind of triangular tooth flange of the utility model pointed tail screw.
In figure: 1-spiral shell head, 2-flange circle, 3-lock tooth, 4-screw rod, 41-outside thread, 42-spiral shell tail.
[embodiment]
Consult Fig. 1 and Fig. 2, a kind of triangular tooth flange of the utility model pointed tail screw, comprise spiral shell head 1, flange circle 2, lock tooth 3 and screw rod 4, described spiral shell head 1 side is provided with flange circle 2, is provided with some lock teeth 3 around described flange circle 2, screw rod 4 is provided with in the middle of flange circle 2, described screw rod 4 is provided with outside thread 41, and screw rod 4 end is provided with spiral shell tail 42, and described spiral shell tail 42 is in taper, described lock tooth 3 cross section is triangular in shape or semicircle, and the length of described spiral shell tail 42 is 1/3rd of screw rod 4 length.The height of described lock tooth 3 is 1 ~ 3mm, and lock tooth 3 cross section is triangular in shape.Described spiral shell head 1 sidepiece is provided with pit, and the degree of depth of described pit is 1 ~ 2mm.Described spiral shell head 1 cross section is Hexagon.The thickness of described flange circle 2 is 2 ~ 4mm.
A kind of triangular tooth flange of the utility model pointed tail screw, by arranging flange circle 2 on spiral shell head 1, can make screw and parts fixation, be not easy to come off, by arranging spiral shell tail 42 on screw rod 4, screw can be made to adapt to different work requirements, screw strong adaptability.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (5)
1. a triangular tooth flange pointed tail screw, it is characterized in that: comprise spiral shell head (1), flange circle (2), lock tooth (3) and screw rod (4), described spiral shell head (1) side is provided with flange circle (2), described flange circle (2) is provided with some lock teeth (3) around, screw rod (4) is provided with in the middle of flange circle (2), described screw rod (4) is provided with outside thread (41), screw rod (4) end is provided with spiral shell tail (42), described spiral shell tail (42) is in taper, described lock tooth (3) cross section is triangular in shape or semicircle, the length of described spiral shell tail (42) is 1/3rd of screw rod (4) length.
2. a kind of triangular tooth flange pointed tail screw as claimed in claim 1, is characterized in that: the height of described lock tooth (3) is 1 ~ 3mm, and lock tooth (3) cross section is triangular in shape.
3. a kind of triangular tooth flange pointed tail screw as claimed in claim 1, is characterized in that: described spiral shell head (1) sidepiece is provided with pit, and the degree of depth of described pit is 1 ~ 2mm.
4. a kind of triangular tooth flange pointed tail screw as claimed in claim 1, is characterized in that: described spiral shell head (1) cross section is Hexagon.
5. a kind of triangular tooth flange pointed tail screw as claimed in claim 1, is characterized in that: the thickness of described flange circle (2) is 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736336.XU CN204267480U (en) | 2014-11-30 | 2014-11-30 | A kind of triangular tooth flange pointed tail screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736336.XU CN204267480U (en) | 2014-11-30 | 2014-11-30 | A kind of triangular tooth flange pointed tail screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267480U true CN204267480U (en) | 2015-04-15 |
Family
ID=52802351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420736336.XU Expired - Fee Related CN204267480U (en) | 2014-11-30 | 2014-11-30 | A kind of triangular tooth flange pointed tail screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267480U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160826A (en) * | 2018-02-09 | 2018-06-15 | 浙江俊荣五金工业有限公司 | For the molding die of trigonodont self-tapping screw |
| CN108869504A (en) * | 2018-07-25 | 2018-11-23 | 浙江鼎盛汽车紧固件有限公司 | A kind of non-dismountable type anti-theft bolt |
-
2014
- 2014-11-30 CN CN201420736336.XU patent/CN204267480U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160826A (en) * | 2018-02-09 | 2018-06-15 | 浙江俊荣五金工业有限公司 | For the molding die of trigonodont self-tapping screw |
| CN108869504A (en) * | 2018-07-25 | 2018-11-23 | 浙江鼎盛汽车紧固件有限公司 | A kind of non-dismountable type anti-theft bolt |
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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 |
Granted publication date: 20150415 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |