CN214146183U - Double-thread self-tapping screw - Google Patents
Double-thread self-tapping screw Download PDFInfo
- Publication number
- CN214146183U CN214146183U CN202022570675.3U CN202022570675U CN214146183U CN 214146183 U CN214146183 U CN 214146183U CN 202022570675 U CN202022570675 U CN 202022570675U CN 214146183 U CN214146183 U CN 214146183U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- connecting seat
- screw
- tapping
- self
- 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
Images
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a double-thread self-tapping screw, which comprises a first screw rod, a second screw rod and a connecting sleeve, wherein self-tapping threads are arranged on the outer peripheral surface of the first screw rod, a cone head is fixedly arranged at the lower end of the first screw rod, a smooth cylindrical rod body is fixedly arranged at the upper end of the first screw rod, a first connecting seat is fixedly arranged at the upper end of the smooth cylindrical rod body, a clamping groove is arranged at the top end of the first connecting seat, connecting threads are arranged on the outer peripheral surface of the second screw rod, a second connecting seat is fixedly arranged at the lower end of the second screw rod, the second connecting seat is clamped in the clamping groove of the first connecting seat, the connecting sleeve is sleeved on the first connecting seat, two processes of drilling and tapping are combined and completed at one time, the cone head is firstly used for drilling, then tapping is carried out through the self-tapping threads of the first screw rod, the construction time is saved, the construction efficiency is improved, simple structure is effective, and convenient to use.
Description
Technical Field
The utility model relates to a fastener technical field specifically is a two tooth self tapping screws.
Background
The self-tapping screw is mainly used for connection between thin metal plates (steel plates, saw plates and the like), during connection, a thread bottom hole is firstly formed in a connected piece, then the self-tapping screw is screwed into the thread bottom hole of the connected piece, the self-tapping self-drilling screw is one of the self-tapping screws and comprises a screw head, a flange plate is arranged at one end of the screw head, a screw rod is arranged at one end of the flange plate, a self-tapping cone is arranged at the end, opposite to the screw head, of the screw rod, the screw rod is combined with the screw head through an electric hand drill during installation, the self-tapping cone is supported on an object to be fixed, a through hole is drilled through the self-tapping cone, and finally the screw rod directly taps out threads on the through hole to realize screwing.
In the prior art, expansion bolts which are driven into a wall or a wood board are generally used for connecting objects, and in practice, the expansion bolts are troublesome to mount and dismount, while self-tapping screws generally only have a screw rod at one end and can be used for tapping materials such as the wood board for fixing, but the other end of the self-tapping screw is a flange plate, so that the self-tapping screw cannot play a role in connection and cannot be used for connecting equipment, and therefore, the self-tapping screw is necessary to be provided with double teeth so that one end of the self-tapping screw can be self-drilled, and the other end of the self-tapping screw is provided with connecting threads so as to play a role in connecting equipment.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model relates to a two tooth self tapping screws, this hexagon flange flower tooth nut simple structure, reliable has effectively solved above-mentioned technical problem, is fit for using widely, in order to realize above-mentioned purpose, the utility model discloses a following technical scheme realizes:
the utility model provides a two tooth self tapping screws, includes first screw rod, second screw rod, connecting sleeve, be equipped with self tapping screw on the outer peripheral face of first screw rod, the lower extreme of first screw rod has set firmly the conical head, the upper end of first screw rod has set firmly smooth cylindrical rod body, the upper end of smooth cylindrical rod body has set firmly first connecting seat, the top of first connecting seat is equipped with the draw-in groove, be equipped with connecting thread on the outer peripheral face of second screw rod, the lower extreme of second screw rod has set firmly the second connecting seat, the second connecting seat block is in the draw-in groove of first connecting seat, the connecting sleeve cover is established on first connecting seat.
On the basis of the above scheme and as a preferable scheme of the scheme: and the lower end surface of the first connecting seat is provided with anti-skidding teeth.
On the basis of the above scheme and as a preferable scheme of the scheme: the first screw rod, the conical head, the smooth cylindrical rod body and the first connecting seat are integrally formed.
On the basis of the above scheme and as a preferable scheme of the scheme: the second screw rod and the second connecting seat are integrally formed.
On the basis of the above scheme and as a preferable scheme of the scheme: and a cross groove is formed in the top surface of the second screw rod.
On the basis of the above scheme and as a preferable scheme of the scheme: and the top surface of the second screw is sprayed with a wear-resistant coating.
Compared with the prior art, the utility model outstanding and profitable technological effect is: thereby the setting up of conical head is convenient for the screw to bore into panel and can assist first screw rod to attack, merges once the completion with drilling and tapping twice process, drills with the conical head earlier, just carries out the tapping through the self tapping screw thread of first screw rod after that, practices thrift engineering time, improves the efficiency of construction, and the rethread lies in the second screw rod that has connecting thread of top and carries out the butt joint with equipment, and simple structure is effective, convenient to use.
Drawings
FIG. 1 is a schematic sectional view of the structure of the present invention;
fig. 2 is a perspective view of the present invention.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, however, the specific embodiments and embodiments described below are only for illustrative purposes and are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the directions or positional relationships shown in fig. 1, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
As shown in fig. 1-2, the utility model relates to a double-thread self-tapping screw, which comprises a first screw rod 1, a second screw rod 2 and a connecting sleeve 3, wherein self-tapping threads 4 are arranged on the outer peripheral surface of the first screw rod 1, preferably, notches are arranged on the self-tapping threads 4 and are uniformly distributed around the self-tapping threads 4, the notches are arranged to facilitate tapping of the screw into a plate material and also facilitate chip removal, the use effect is good, a conical head 5 is fixedly arranged at the lower end of the first screw rod 1, and a conical drilling head is convenient for drilling the screw into the plate material so as to assist the first screw rod 1 in tapping, two processes of drilling and tapping are combined and completed at one time, the conical head 5 is firstly used for drilling, then tapping is carried out through the self-tapping threads 4 of the first screw rod 1, the construction time is saved, the construction efficiency is improved, a smooth cylindrical rod body 6 is fixedly arranged at the upper end of the first screw rod 1, the smooth cylindrical rod body 6 plays a transition role, the upper end of the smooth cylindrical rod body 6 is fixedly provided with a first connecting seat 7, the top end of the first connecting seat 7 is provided with a clamping groove 8, and the first screw rod 1, the conical head 5, the smooth cylindrical rod body 6 and the first connecting seat 7 are integrally formed and are stable in structure.
Be equipped with connecting thread 10 on the outer peripheral face of second screw rod 2, the lower extreme of second screw rod 2 has set firmly second connecting seat 9, second screw rod 2 and second connecting seat 9 are integrated into one piece, stable in structure, thereby the shape and the draw-in groove 8 looks adaptation of second connecting seat 9 insert draw-in groove 8 with second connecting seat 9 and accomplish the joint after the side is aimed at, establish and the chucking with connecting sleeve 3 back-off cover on first connecting seat 7 again, can avoid second connecting seat 9 roll-off from draw-in groove 8, attack panel when first screw rod 1 after, the setting up of second screw rod 2 makes the screw can be used for jointing equipment etc. and simple to use is effective, can also change the second screw rod that has different specification screw threads with the connection installation etc. of adaptation equipment, the dismouting is convenient.
Furthermore, the lower end surface of the first connecting seat 7 is provided with anti-slip teeth 11, so that the contact friction force of the lower end surface is increased, and looseness is prevented.
Furthermore, the top surface of the second screw rod 2 is provided with a cross groove 12, which can be directly butted with a cross screwdriver bit or a straight screwdriver bit, thereby saving the working time and improving the working efficiency.
Furthermore, the top surface of the second screw rod 2 is sprayed with a wear-resistant coating 13, the wear-resistant coating 13 is a wear-resistant coating adhesive prepared from various resins, elastomers and the like, the wear-resistant coating adhesive is obtained by heating and curing after being coated on the surface of the second screw rod 2, the wear-resistant coating adhesive is a wear-resistant and corrosion-resistant polymer material formed by compounding high-performance wear-resistant ceramic particles and modified toughening resins, the groove on the top surface of the screw can be effectively prevented from being excessively worn after the screw is used for many times, and the use frequency and the service life of the screw are increased.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made by the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. A kind of two-teeth tapping screw, characterized by: including first screw rod, second screw rod, connecting sleeve, be equipped with self tapping screw thread on the outer peripheral face of first screw rod, the lower extreme of first screw rod has set firmly the conical head, the upper end of first screw rod has set firmly smooth cylinder body of rod, the upper end of smooth cylinder body of rod has set firmly first connecting seat, the top of first connecting seat is equipped with the draw-in groove, be equipped with connecting thread on the outer peripheral face of second screw rod, the lower extreme of second screw rod has set firmly the second connecting seat, the second connecting seat block is in the draw-in groove of first connecting seat, the connecting sleeve cover is established on first connecting seat.
2. A bi-dental self-tapping screw as claimed in claim 1, wherein: and the lower end surface of the first connecting seat is provided with anti-skidding teeth.
3. A bi-dental self-tapping screw as claimed in claim 1, wherein: the first screw rod, the conical head, the smooth cylindrical rod body and the first connecting seat are integrally formed.
4. A bi-dental self-tapping screw as claimed in claim 1, wherein: the second screw rod and the second connecting seat are integrally formed.
5. A bi-dental self-tapping screw as claimed in claim 1, wherein: and a cross groove is formed in the top surface of the second screw rod.
6. A bi-dental self-tapping screw as in claim 5 wherein: and the top surface of the second screw is sprayed with a wear-resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022570675.3U CN214146183U (en) | 2020-11-09 | 2020-11-09 | Double-thread self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022570675.3U CN214146183U (en) | 2020-11-09 | 2020-11-09 | Double-thread self-tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214146183U true CN214146183U (en) | 2021-09-07 |
Family
ID=77562697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022570675.3U Expired - Fee Related CN214146183U (en) | 2020-11-09 | 2020-11-09 | Double-thread self-tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214146183U (en) |
-
2020
- 2020-11-09 CN CN202022570675.3U patent/CN214146183U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214146183U (en) | Double-thread self-tapping screw | |
| CN214945667U (en) | Hexagon flange face self-locking nut | |
| US20040156696A1 (en) | Fastener for fiberglass and other composite structures | |
| CN210715422U (en) | Anti-rotation connecting structure for plate connection and combined plate | |
| CN209943303U (en) | Self-tapping screw with inverted teeth | |
| CN210263421U (en) | Self-tapping screw for building component | |
| CN111219402A (en) | Novel self tapping bores combination bolt | |
| CN219317378U (en) | Locking fastening screw | |
| CN110701157A (en) | Anti-rotation connecting structure for plate connection, combined plate and production method | |
| CN212429470U (en) | Special bolt | |
| CN220168320U (en) | Strong reinforced fixing screw | |
| CN216407428U (en) | Reinforced screw structure | |
| CN220470445U (en) | Fastener capable of avoiding loosening | |
| CN210660949U (en) | High-strength triangular tooth screw for drilling steel plate | |
| CN220216982U (en) | Screw external thread tapping cleaning device | |
| CN219343963U (en) | Building external scaffold wall connecting piece | |
| CN217421797U (en) | Self-tapping and self-drilling screw with good anti-loosening effect | |
| CN213393079U (en) | Bolt made of glass fiber reinforced plastic | |
| CN219413225U (en) | Self-tapping screw with stable connectivity | |
| CN211218960U (en) | Tungsten steel connects excellent reamer | |
| CN212202779U (en) | Novel self tapping bores combination bolt | |
| CN215409725U (en) | Self-locking screw with anti-loosening mechanism | |
| CN204477635U (en) | A kind of mounting structure of wall hanging piece | |
| CN219888447U (en) | Self-tapping screw | |
| CN210290421U (en) | Flange self-drilling screw with pad |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20210907 Termination date: 20211109 |