CN114810779B - Bullet-head threaded nails - Google Patents
Bullet-head threaded nails Download PDFInfo
- Publication number
- CN114810779B CN114810779B CN202210439004.4A CN202210439004A CN114810779B CN 114810779 B CN114810779 B CN 114810779B CN 202210439004 A CN202210439004 A CN 202210439004A CN 114810779 B CN114810779 B CN 114810779B
- Authority
- CN
- China
- Prior art keywords
- nail
- tip
- diameter
- bullet
- thread
- 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
- 230000007704 transition Effects 0.000 claims abstract description 20
- 230000007423 decrease Effects 0.000 claims abstract description 4
- 238000010304 firing Methods 0.000 claims description 6
- 239000003380 propellant Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 19
- 239000010959 steel Substances 0.000 description 19
- 239000000843 powder Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
- F16B25/0057—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
- F16B25/0063—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections with a non-threaded portion on the shaft of the screw
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
本发明涉及紧固件，具体涉及弹头式螺纹射钉。由尖端到尾端依次为钉尖、过渡段、螺纹段、钉帽；所述的钉尖为椎体，钉尖的椎体母线为弧线，该弧线的曲率自尖端向尾端逐渐先增大后减小，所述的过渡段为圆柱体，过渡段的直径与钉尖尾端直径相同，过渡段的直径小于螺纹段直径，钉帽直径大于螺纹段直径。本发明能够轻松穿入紧固面并保持射入方向稳定，穿入过程形成螺纹自攻，对紧固面破坏小。
The present invention relates to fasteners, and in particular to bullet-shaped threaded nails. From the tip to the tail, there are nail tip, transition section, thread section, and nail cap in sequence; the nail tip is a vertebral body, and the vertebral body generatrix of the nail tip is an arc, and the curvature of the arc gradually increases and then decreases from the tip to the tail, and the transition section is a cylinder, and the diameter of the transition section is the same as the diameter of the tail end of the nail tip, the diameter of the transition section is smaller than the diameter of the thread section, and the diameter of the nail cap is larger than the diameter of the thread section. The present invention can easily penetrate into the fastening surface and keep the injection direction stable, and the thread self-tapping is formed during the penetration process, which causes little damage to the fastening surface.
Description
Technical Field
The invention relates to a fastener, in particular to a bullet type threaded nail.
Background
In the existing nail shooting, threads are not arranged on the nail body, or threads are arranged at the tip end of the nail body. For the nail without screw threads, the fastening surface can be penetrated quickly and the depth can be reached, but the nail without screw threads is easy to pull out. The existing screw with threads is connected by forming the threads after being shot, but the threads need to be rotary cut to form a fastening surface when being shot at the position, a large amount of kinetic energy needs to be consumed, so that the deep depth is influenced and can be solved only by increasing the emission kinetic energy, the screw is easy to deviate due to the fact that the threads are stressed, and the fastening surface is possibly heated, melted or damaged due to the fact that the rotation speed of the screw is high due to the fact that the emission kinetic energy is increased. And if the emission kinetic energy is large, the fastening surface is easily torn directly to cause cracking.
Disclosure of Invention
The invention aims to provide a bullet type threaded shooting nail so as to solve the problems of poor fastening performance and damage to a fastening surface of the existing shooting nail.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the bullet type screw shooting nail comprises a nail tip, a transition section, a screw thread section and a nail cap from the tip to the tail end in sequence, wherein the nail tip is a cone, a cone generatrix of the nail tip is an arc, the curvature of the arc gradually increases from the tip to the tail end and then decreases, the transition section is a cylinder, the diameter of the transition section is the same as the diameter of the tail end of the nail tip, the diameter of the transition section is smaller than the diameter of the screw thread section, and the diameter of the nail cap is larger than the diameter of the screw thread section.
Preferably, the thread segments comprise a cylindrical body and threads on the surface thereof, the thread outer diameter gradually increasing from the tip to the tail.
Preferably, the thread segments comprise a cone and a thread on the surface thereof, the diameter of the cone gradually increasing from the tip to the tail.
Preferably, the threads extend to the nut.
Preferably, the angle between the thread outer diameter connecting line of the thread section and the thread section axis is smaller than 3 degrees.
Preferably, the side wall of the nail cap is provided with a clamping surface.
Preferably, the nail cap is provided with a groove penetrating through the axis of the nail cap to form a straight groove or a cross groove.
Preferably, the nut is connected with a connector, a concave cavity is formed in the rear end of the connector, the concave cavity is filled with propellant powder, and the concave cavity is sealed by a sealing sleeve.
Preferably, the cavity is internally provided with a primer hole on the sealing sleeve, and the primer hole is internally provided with a primer.
Compared with the prior art, the invention has at least one of the following beneficial effects that the invention can easily penetrate into the fastening surface, keeps the injection direction stable, forms thread self-tapping in the penetration process, and does not crack the fastening surface.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of another embodiment of the present invention.
Fig. 3 is a schematic view of another structure of the present invention.
Fig. 4 is a schematic structural view of the present invention provided with a connector.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1, 2, 3, 4 illustrate the construction of such a bullet threaded stud, and several embodiments are listed below in conjunction with the drawings.
Example 1:
the bullet type screw shooting nail comprises a nail tip 1, a transition section 2, a screw thread section 3 and a nail cap 4 from the tip to the tail end, wherein the nail tip 1 is a cone, a cone generatrix of the nail tip 1 is an arc line, and the curvature of the arc line gradually increases from the tip to the tail end and then decreases. The adoption of the structure of the nail tip 1 can reduce the pulsating pressure of the nail tip 1 entering the steel structure, and the steel structure is less prone to cracking.
The transition section 2 is a cylinder, the diameter of the transition section 2 is the same as the diameter of the tail end of the nail tip 1, the diameter of the transition section 2 is smaller than the diameter of the thread section 3, and the diameter of the nail cap 4 is larger than the diameter of the thread section 3.
The bullet type threaded shooting nail can be used for connecting and fixing light steel structures or other metal light structures. Can be used with gas explosion tools, electric spring pressure tools, nail shooting devices and the like. When the nail is impacted by an external tool, the nail can enter a light steel structure, the light steel structure is softer than the nail, the part of the nail tip 1 can penetrate into the surface of the steel structure, the cone body of the nail tip 1 is a cone body, the cone body generatrix of the nail tip 1 is an arc line, the curvature of the arc line is gradually increased from the tip to the tail end and then reduced, and the formed hole is gradually increased. In the process, the acting force of the steel structure around the hole on the nail tip 1 is large, if the screw thread is arranged on the nail tip, the screw thread rotary cutting consumes a large amount of kinetic energy, so that the deep distance of the nail is influenced, meanwhile, the diameter of the nail tip is smaller, the stability is poor, and the nail shooting deflection is easy to cause when the screw thread contacts with the steel structure. The transition section 2 with the same diameter is arranged behind the nail tip 1 to play a role in expanding holes, prevent the nail tip from retracting, enable the nail tip to be shaped, cut threads on the thread section 3 to form threads, enable the force of a steel structure on the threads to be smaller in the process, enable the penetrating distance of the nail to be ensured, enable the temperature generated during cutting to be lower, enable the damage degree of the steel structure to be smaller, enable the nail tip 1 and the transition section 2 to enter the steel structure during cutting of the thread section 3, enable the nail to be kept higher in stability, and enable the nail to not deviate during cutting.
The thread segments 3 may be formed by threads on the cylindrical body and its surface as shown in fig. 1, with the same outside diameter from the tip to the tail. To further increase the tightness of the thread, it is preferable to use two ways, one in which the thread segment 3 comprises a cylindrical body and its surface threads, as shown in fig. 2, with a gradual increase in the outside diameter of the thread from the tip to the tail end, and one in which the thread segment 3 comprises a conical body and its surface threads, as shown in fig. 3, with a gradual increase in the diameter of the conical body from the tip to the tail end. Both of these forms have the effect of gradually increasing the outer diameter of the thread. The screw thread groove formed by the screw thread groove is gradually increased, the screw thread connection formed by the screw thread groove is more firm, the mechanical strength of the transition section matrix of the screw thread groove is better, the tightening degree between the steel structure and the cone of the transition section 2 is higher, and the screw thread groove is suitable for the steel structure with softer texture and can be selected according to the material characteristics. For both structures, the included angle between the thread outer diameter connecting line of the thread section 3 and the axis of the thread section 3 is preferably smaller than 3 degrees, the nail shooting always has no small impact force, and the steel structure is cracked due to the overlarge angle. Further, the thread of the thread section 3 should extend to the position of the nut 4, the thread is formed when the thread section 3 enters the steel structure, namely, the thread is formed at the entrance of the steel structure, the thread of the thread section 3 should extend to the position of the nut 4, even if the thread on the thread section 3 completely fills the thread formed on the steel structure, no gap is formed on the steel structure, on one hand, the tightness and the stability are better, and on the other hand, the corrosion resistance of the steel structure and the nail is increased. For the nail cap 4, in order to facilitate the later taking out of the nail, a clamping surface 5 can be oppositely arranged on the side wall of the nail cap 4, and a hexagonal shape can be formed. The nail cap 4 can be flat, or a groove penetrating through the axis of the nail cap 4 can be arranged on the nail cap 4 to form a straight groove or a cross groove.
Example 2:
As shown in fig. 4, on the basis of embodiment 1, the nail can be processed into an integral nail, the nail cap 4 is connected with the connector 6, the rear end of the connector 6 is provided with the concave cavity 7, the concave cavity 7 is filled with propellant powder, the concave cavity 7 is sealed by the sealing sleeve 8, the structure is suitable for single-base medicine, and the integral nail shooter is used for shooting the nail by striking the propellant powder to fire the propellant powder to generate kinetic energy for combustion. The cavity 7 can be internally provided with a primer hole 9 on the sealing sleeve 8, and the primer hole 9 is internally provided with a primer, so that the structure is suitable for double-base medicines. The firing pin is ejected by striking the firing pin to fire the firing pin to burn and ignite the propellant to generate kinetic energy.
Reference in the specification to a number of illustrative embodiments means that a particular structure described in connection with the embodiments is included in at least one embodiment of the application described generally. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, while a structure is described in connection with any one embodiment, it is intended that such a structure be implemented in connection with other embodiments within the scope of the application.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439004.4A CN114810779B (en) | 2022-04-22 | 2022-04-22 | Bullet-head threaded nails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439004.4A CN114810779B (en) | 2022-04-22 | 2022-04-22 | Bullet-head threaded nails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114810779A CN114810779A (en) | 2022-07-29 |
| CN114810779B true CN114810779B (en) | 2024-12-24 |
Family
ID=82506933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210439004.4A Active CN114810779B (en) | 2022-04-22 | 2022-04-22 | Bullet-head threaded nails |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810779B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205734731U (en) * | 2016-04-29 | 2016-11-30 | 四川圣亚凯紧固器材有限公司 | A kind of new-type one nail |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2768552A (en) * | 1954-03-18 | 1956-10-30 | Remington Arms Co Inc | Explosive stud having ogival point and reduced dimension tip projecting therefrom |
| GB1022355A (en) * | 1962-08-31 | 1966-03-09 | Res Eng & Mfg | Self-tapping screw with lobular work-entering end and methods for manufacturing same |
| GB1479600A (en) * | 1973-11-13 | 1977-07-13 | British Screw Co Ltd | Threaded fastener and method and tool for inserting same |
| US6805525B2 (en) * | 2000-12-12 | 2004-10-19 | Hkn Associates, Llc | Drive pin for fastening to a sheet-metal framing member |
| SE529577C2 (en) * | 2005-12-22 | 2007-09-25 | Essve Produkter Ab | Screw |
| DE102006000232A1 (en) * | 2006-05-16 | 2007-11-22 | Hilti Ag | Chipless thread forming screw |
| DE102008033509A1 (en) * | 2008-07-07 | 2010-01-14 | Arnold Umformtechnik Gmbh & Co. Kg | screw |
| DE202009009651U1 (en) * | 2009-07-15 | 2009-09-17 | Acument Gmbh & Co. Ohg | Self-hole forming fastener |
| DE102010025359A1 (en) * | 2010-06-28 | 2011-12-29 | Audi Ag | Nail for essentially turn-free axial driving into multiple non-prepunched components, has nail shaft comprising surface area profile, where hardness of region of surface area profile is lower than radial depth of nail shaft |
| CN202833498U (en) * | 2012-09-12 | 2013-03-27 | 达州海天紧固件有限公司 | Shoot nail |
| CN203081952U (en) * | 2013-01-23 | 2013-07-24 | 四川德阳市力协有限责任公司 | Drive pin fastening and connecting device |
| CN205734736U (en) * | 2016-04-29 | 2016-11-30 | 四川圣亚凯紧固器材有限公司 | A kind of plane fixed structure piece |
| CN205780144U (en) * | 2016-05-26 | 2016-12-07 | 天津津海达科技有限公司 | A kind of Novel nail |
| CA3092557C (en) * | 2018-06-21 | 2022-08-23 | Halliburton Energy Services, Inc. | Shaped charge with tri-radii liner for oilfield perforating |
| CN209523963U (en) * | 2018-12-19 | 2019-10-22 | 四川南山射钉紧固器材有限公司 | A kind of high-strength stainless steel nailing |
| TWI738043B (en) * | 2019-08-28 | 2021-09-01 | 精法精密工業股份有限公司 | Quick fastening screw |
| CN111810506A (en) * | 2020-07-17 | 2020-10-23 | 山东鑫沈行新材料科技有限公司 | High-strength stainless steel threaded nail resistant to microbial corrosion and processing method thereof |
-
2022
- 2022-04-22 CN CN202210439004.4A patent/CN114810779B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205734731U (en) * | 2016-04-29 | 2016-11-30 | 四川圣亚凯紧固器材有限公司 | A kind of new-type one nail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114810779A (en) | 2022-07-29 |
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