CN210153057U - Big flat-head self-tapping screw - Google Patents
Big flat-head self-tapping screw Download PDFInfo
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- CN210153057U CN210153057U CN201920904278.XU CN201920904278U CN210153057U CN 210153057 U CN210153057 U CN 210153057U CN 201920904278 U CN201920904278 U CN 201920904278U CN 210153057 U CN210153057 U CN 210153057U
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- tapping
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Abstract
The utility model discloses a big flat self tapping screw, including nut, nut head, screw rod and self tapping head, the bottom of nut is extended and is connected with a fastening gasket erection section, just the one end of fastening gasket erection section is extended and is connected with the screw rod, just the one end of screw rod is extended and is connected with the self tapping head, the top of nut is equipped with the nut head in the position department of living in, just be equipped with the screwdriver edge of a knife of indent in the nut head, the screwdriver edge of a knife is the cross form, be equipped with first screw thread portion and second screw thread portion on the screw rod, just first screw thread portion is close to the one end of self tapping head, second screw thread portion is close to the one end of nut. The utility model discloses a be equipped with fastening gasket erection section between screw rod and nut to screw thread installation between fastening gasket erection section and the fastening gasket makes fastening gasket fixed mounting increase the fastening effect to the object of screw on the fastening gasket erection section.
Description
Technical Field
The utility model relates to a screw field, in particular to big flat-head self tapping screw.
Background
The self-tapping screw is used for nonmetal or softer metal, and bottom holes and tapping are not needed; the self-tapping screw is pointed, so that self-tapping can be realized; the common screw is flat head with same thickness, the self-tapping screw is that the drilled hole is a hole without tapping, the used screw is different from the common screw, the head is sharp, the tooth pitch is larger, the screw is similar to a chipless screw tap, and can be directly screwed in without tapping, the metal and the plastic are usually used by the method, the solidified material can be tapped with corresponding screw threads by self screw threads, and the solidified material is mutually and tightly matched with the screw threads
However, the fitting installation between the existing self-tapping screw and the fastening gasket is loose, the fixing effect on an object is poor, the drilling and tapping efficiency is high, and the practicability is not enough.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a large flat head self-tapping screw, which can effectively solve the problems of the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a big flat self-tapping screw, includes nut, nut head, screw rod and self-tapping head, the bottom of nut is extended and is connected with a fastening gasket installation section, just the one end of fastening gasket installation section is extended and is connected with the screw rod, just the one end of screw rod is extended and is connected with the self-tapping head, the top of nut is equipped with the nut head in the middle position department, just be equipped with the screwdriver edge of a knife of indent in the nut head, the screwdriver edge of a knife is the cross form, be equipped with first screw portion and second screw portion on the screw rod, just first screw portion is close to the one end from the tapping head, second screw portion is close to the one end of nut.
Further, the nut, the fastening gasket mounting section, the screw and the nut head are integrally formed.
Further, the helical thread of the first thread part is larger than the helical thread of the second thread part.
Furthermore, one end of the self-tapping head is a conical vertex angle, and four guide grooves are formed in the self-tapping head.
Furthermore, a fastening gasket can be installed on the fastening gasket installation section in a matched mode, and the aperture size of the fastening hole in the fastening gasket is slightly larger than the diameter size of the first threaded portion and the second threaded portion.
Furthermore, four reaming angles are arranged at the self-tapping head on the screw rod, the size of the four reaming angles is smaller than that of the thread part, and the reaming angles are semi-conical.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the fastening gasket mounting section is arranged between the screw rod and the nut, and the fastening gasket mounting section and the fastening gasket are in threaded mounting, so that the fastening gasket is fixedly mounted on the fastening gasket mounting section, and the fastening effect of the screw on an object is improved;
2. the utility model discloses a be equipped with first screw portion and second screw portion on the screw rod, and the skewed tooth profile of first screw portion is greater than the skewed tooth profile on the second screw portion, the combination of first screw portion and second screw portion is used, can accelerate the efficiency of boring and attacking;
3. the reaming angle is arranged on the screw rod close to the self-tapping head, and the reaming angle is in a half cone shape, so that the drilling efficiency of the screw is accelerated when the screw is drilled, and the screw thread part on the screw rod is more convenient to drill and tap;
4. the utility model discloses at self tapping overhead four guide slots that are equipped with, the guide slot can be derived the sweeps when self tapping head drills to can accelerate the brill of screw and go into efficiency.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of a partial structure of the present invention.
Fig. 3 is a schematic structural view of the fastening gasket of the present invention.
Fig. 4 is a schematic structural view of the tapping head of the present invention.
Fig. 5 is a top view of the nut of the present invention.
In the figure: 1. a nut; 2. fastening a gasket; 3. a nut head; 301. a screwdriver blade; 4. a screw; 5. a tapping head; 501. a guide groove; 6. reaming a hole angle; 7. a first threaded portion; 8. a second threaded portion; 9. and fastening the gasket mounting section.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Please refer to fig. 1-5, a large flat head self-tapping screw, which comprises a nut 1, a nut head 3, a screw rod 4 and a self-tapping head 5, wherein the bottom of the nut 1 is connected with a fastening gasket mounting section 9 in an extending manner, one end of the fastening gasket mounting section 9 is connected with the screw rod 4 in an extending manner, one end of the screw rod 4 is connected with the self-tapping head 5 in an extending manner, the nut head 3 is arranged at the center of the top of the nut 1, an inwards concave screwdriver edge 301 is arranged in the nut head 3, the screwdriver edge 301 is in a cross shape, a first thread part 7 and a second thread part 8 are arranged on the screw rod 4, the first thread part 7 is close to one end of the self-tapping head 5, and the second thread part 8 is close to one end of the nut 1.
Specifically, as shown in fig. 1, the nut 1, the fastening washer mounting section 9, the screw rod 4 and the nut head 3 are integrally formed.
Through adopting above-mentioned scheme, integrated into one piece between nut 1, fastening gasket installation section 9, screw rod 4 and the nut head 3, the efficiency of self tapping is better during the use.
Specifically, as shown in fig. 1, the helical teeth of the first threaded portion 7 are larger than the helical teeth of the second threaded portion 8.
Through adopting above-mentioned scheme, the skewed tooth profile of first screw portion 7 is greater than the skewed tooth profile on the second screw portion 8, and the cooperation between the two is used, can accelerate the efficiency of drilling.
Specifically, as shown in fig. 1, one end of the self-tapping head 5 is a conical vertex angle, and four guide grooves 501 are formed in the self-tapping head 5.
Through adopting above-mentioned scheme, the one end of self tapping head 5 is the tapered apex angle, is equipped with four guide slots 501 on the self tapping head 5, can upwards arrange the sweeps that produces when drilling with self tapping head 5 through guide slot 501 for the efficiency of self tapping head 5 drilling.
Specifically, as shown in fig. 1, the fastening gasket 2 can be fittingly mounted on the fastening gasket mounting section 9, and the aperture size of the fastening hole in the fastening gasket 2 is slightly larger than the diameter size of the first threaded portion 7 and the second threaded portion 8.
Through adopting above-mentioned scheme, can cooperate on the fastening gasket installation section 9 to install fastening gasket 2, carry out the screw thread fixed mounting effect between fastening gasket 2 and the fastening gasket installation section 9.
Specifically, as shown in fig. 1, four reaming angles 6 are arranged at a self-tapping head 5 on the screw rod 4, the four reaming angles 6 are smaller than the threaded portion, and the reaming angles 6 are semi-conical.
Through adopting above-mentioned scheme, lie in on the screw rod 4 and be equipped with four reaming angles 6 from the head of attacking 5 department, reaming angle 6 can accelerate the efficiency of drilling.
It should be noted that, the utility model relates to a large flat head self-tapping screw, when using the screw, firstly, the slotted hole on the fastening gasket 2 passes through the first screw thread part 7 and the second screw thread part 8 on the screw 4, arrange the fastening gasket installation section 9 in, and the screw thread installation between the two, make the fastening gasket 2 fix on the fastening gasket installation section 9, fix the fastening gasket 2, then use the cross wrench to rotate the nut 1 on the nut head 3, make the self-tapping head 5 drill the material, during the process of drilling, the guide slot 501 can lead out the sweeps produced in the drilling process upwards, thus can accelerate the drilling efficiency of the self-tapping head 5, and is equipped with the first screw thread part 7 and the second screw thread part 8 on the screw 4, the cooperation of the two is used, can accelerate the drilling efficiency and the fixing effect of the screw, the use is more convenient.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a big flat head self tapping screw, includes nut (1), nut head (3), screw rod (4) and self tapping head (5), its characterized in that: the bottom of nut (1) extends and is connected with a fastening gasket erection section (9), just the one end of fastening gasket erection section (9) extends and is connected with screw rod (4), just the one end of screw rod (4) extends and is connected with from attacking head (5), the top of nut (1) is equipped with nut head (3) in the middle position department, just be equipped with screwdriver edge (301) of indent in nut head (3), screwdriver edge (301) are the cross form, be equipped with first screw thread portion (7) and second screw thread portion (8) on screw rod (4), just first screw thread portion (7) are close to the one end from attacking head (5), second screw thread portion (8) are close to the one end of nut (1).
2. A large flat head self-tapping screw as claimed in claim 1, wherein: the nut (1), the fastening gasket mounting section (9), the screw rod (4) and the nut head (3) are integrally formed.
3. A large flat head self-tapping screw as claimed in claim 1, wherein: the inclined tooth thread of the first thread part (7) is larger than that of the second thread part (8).
4. A large flat head self-tapping screw as claimed in claim 1, wherein: one end of the self-tapping head (5) is a conical vertex angle, and four guide grooves (501) are formed in the self-tapping head (5).
5. A large flat head self-tapping screw as claimed in claim 1, wherein: the fastening gasket mounting section (9) can be provided with a fastening gasket (2) in a matched mode, and the aperture size of a fastening hole in the fastening gasket (2) is slightly larger than the diameter size of the first threaded portion (7) and the second threaded portion (8).
6. A large flat head self-tapping screw as claimed in claim 1, wherein: the self-tapping screw is characterized in that four reaming angles (6) are arranged at the self-tapping head (5) on the screw (4), the size of each reaming angle (6) is smaller than that of each thread portion, and each reaming angle (6) is in a half-cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920904278.XU CN210153057U (en) | 2019-06-17 | 2019-06-17 | Big flat-head self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920904278.XU CN210153057U (en) | 2019-06-17 | 2019-06-17 | Big flat-head self-tapping screw |
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| Publication Number | Publication Date |
|---|---|
| CN210153057U true CN210153057U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920904278.XU Active CN210153057U (en) | 2019-06-17 | 2019-06-17 | Big flat-head self-tapping screw |
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| CN (1) | CN210153057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720403A (en) * | 2020-06-29 | 2020-09-29 | 海盐特邦科技股份有限公司 | Fiberboard nail capable of removing chips |
-
2019
- 2019-06-17 CN CN201920904278.XU patent/CN210153057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720403A (en) * | 2020-06-29 | 2020-09-29 | 海盐特邦科技股份有限公司 | Fiberboard nail capable of removing chips |
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