CN2050105U - High-strength taper self-tapping screw - Google Patents
High-strength taper self-tapping screw Download PDFInfo
- Publication number
- CN2050105U CN2050105U CN 88216519 CN88216519U CN2050105U CN 2050105 U CN2050105 U CN 2050105U CN 88216519 CN88216519 CN 88216519 CN 88216519 U CN88216519 U CN 88216519U CN 2050105 U CN2050105 U CN 2050105U
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- tapping screw
- screw
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Abstract
The utility model discloses a high-strength taper self-tapping screw used for various modern building decorations or the electromechanical decorations. The screw thread tooth angle is small, and the height of thread and the screw pitch are both bigger than the normal screw nail. The surface of the high-strength taper self-tapping screw passes through a composed and strengthening heat-treatment, the hardening layer thickness reaches 0.5-3 mm, the hardness reaches HRC60-70, and the center part has the high tenacity. The utility model can lightly and easily tap into the various brick walls, concrete or metal physics, and can storage the concrete powders or the metal cutting and extruding products in the thread groove. The utility model has the advantages of simple structure, easy fabrication, low cost, steel product economization, high tough degree and hardness, and the high-strength taper self-tapping screw can be reused more than ten times.
Description
The utility model is to be widely used in various modern architecture thing finishings or the dynamo-electric fastening piece of installing.
The fastening piece that generally is used at present building finishing or dynamo-electric installation is through-wall bolt, setscrew, cement steel nail or cannon nail etc.But adopt the locking method of these conventional fasteners, building is all had certain damage, and maybe can not dismantle and to reuse because of the intensity of these conventional fasteners is low.The present invention is in order to overcome the shortcoming of existing all kinds of routine building thing fastening pieces, through a large amount of tests, be developed into function and be repeatedly used in the high strength taper tapping screw of modern architecture things such as various concrete, brick wall finishing or the dynamo-electric direct tapping of installing.
The feature of the utility model--high strength taper tapping screw is that its worm tooth angle is littler than the worm tooth angle of conventional fastening screw trip bolt, and its height of thread, pitch are all greater than the height of thread, the pitch that have conventional fastening screw trip bolt now.External diameter is in φ 8～20 scopes, and its tapering is that 1:30～1:200, worm tooth angle are 35 °～50 °, and pitch is 3～6mm, and height of thread is 1.5～2mm.Special its surface is through complex intensifying heat treatment, makes thin hardened layer reach 0.5～3mm, hardness reaches HRC60-70 above (or HV900--1200), and its heart portion then has high-strength tenacity.These features make high strength taper tapping screw to attacking of all kinds of brick walls, concrete or metal object light easy, laborsaving, save time.Less because of its worm tooth angle again, thread groove is dark, broad, makes brick wall, concrete powder or metal chip, extrudate to be stored in the thread groove when it is attacked.The utility model is followed closely relatively with conventional through-wall bolt, setscrew, cannon, have simple in structure, save steel, (saving nut, overcoat etc.) manufactures easily, and has high toughness, hardness, can reuse more than ten time with first-class advantage, if produce in enormous quantities, generally promote the use of, its price is more cheap than conventional same specification fastening piece, and bigger economic benefit and social benefit are arranged.
The structural drawing of high strength taper tapping screw as shown in drawings.Enforcement of the present utility model is as long as press structure shown in the accompanying drawing, according to various different requirements, diameter, length, tapering, the angle of thread, the depth value of selected screw in the number range that specification is given, and select the low carbon steel steel for use, adopt common file silk machine to produce, and then carry out surface recombination reinforcing heat treatment, just can finely implement.The high strength taper tapping screw that the inventor has made plurality of specifications carries out determination test.Wherein an embodiment is: screw diameter is that 9mm, tapering are that 1:30, worm tooth angle are 40, pitch is that 5mm, height of thread are that 1.5mm, surface hardness are HRC60-70, and selected steel are No. 10 steel.The concrete that this screw is attacked 300 labels is easy to, and measures through Guangdong Province's construction engineering quality inspection center, and its stretching resistance intensity is greater than 1.5 tons.Other data please see Appendix " report of building materials laboratory test ".
Annex:
South China Science ﹠ Engineering University's building materials laboratory test report
Claims (1)
- A kind of various modern architecture thing finishings or dynamo-electric high strength taper tapping screw of installing of being applicable to, the external diameter that it is characterized in that it is in 8～20mm scope the time, and its tapering is that 1: 30～1: 200, worm tooth angle are that 35 °～50 °, height of thread are that 1.5～2mm, pitch are 3～6mm; Its surface is through complex intensifying heat treatment, and thin hardened layer reaches 0.5～3mm, hardness reaches more than the HRC60-70.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216519 CN2050105U (en) | 1988-12-21 | 1988-12-21 | High-strength taper self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216519 CN2050105U (en) | 1988-12-21 | 1988-12-21 | High-strength taper self-tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2050105U true CN2050105U (en) | 1989-12-27 |
Family
ID=4849133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88216519 Withdrawn CN2050105U (en) | 1988-12-21 | 1988-12-21 | High-strength taper self-tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2050105U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304767C (en) * | 2003-08-04 | 2007-03-14 | 动力拉链公司 | Fastener for use with frangible material |
| CN100467887C (en) * | 2004-04-30 | 2009-03-11 | 伯尔霍夫连接技术有限公司 | A joining assembly including a plastic support member and a plastic threaded element |
| CN106246692A (en) * | 2016-07-28 | 2016-12-21 | 联想(北京)有限公司 | A kind of input equipment and hole, location manufacture method |
| CN109139653A (en) * | 2018-10-31 | 2019-01-04 | 江苏脒诺甫纳米材料有限公司 | The fastener of zircon sand process equipment |
-
1988
- 1988-12-21 CN CN 88216519 patent/CN2050105U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304767C (en) * | 2003-08-04 | 2007-03-14 | 动力拉链公司 | Fastener for use with frangible material |
| CN100467887C (en) * | 2004-04-30 | 2009-03-11 | 伯尔霍夫连接技术有限公司 | A joining assembly including a plastic support member and a plastic threaded element |
| CN106246692A (en) * | 2016-07-28 | 2016-12-21 | 联想(北京)有限公司 | A kind of input equipment and hole, location manufacture method |
| CN109139653A (en) * | 2018-10-31 | 2019-01-04 | 江苏脒诺甫纳米材料有限公司 | The fastener of zircon sand process equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |