CN209510858U - A kind of self drilling tapping screw being easily installed - Google Patents
A kind of self drilling tapping screw being easily installed Download PDFInfo
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- CN209510858U CN209510858U CN201822060822.5U CN201822060822U CN209510858U CN 209510858 U CN209510858 U CN 209510858U CN 201822060822 U CN201822060822 U CN 201822060822U CN 209510858 U CN209510858 U CN 209510858U
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- thread segment
- smooth section
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Abstract
The utility model discloses a kind of self drilling tapping screws being easily installed, and are related to screw field, including screw head, spiral shell body and spiral shell tail, and spiral shell body is disposed with thread segment, changeover portion, smooth section and protrusion section from screw head to spiral shell tail；The outer diameter of protrusion section and thread segment is all larger than the outer diameter of smooth section, changeover portion is close to the outer diameters such as one end of smooth section and smooth section, changeover portion is incremented by close to the outer diameters such as one end of thread segment and thread segment, the outer diameter of changeover portion from smooth section to thread segment, and thread segment is fixedly connected with self tapping thread.Before self drilling tapping screw is installed, self drilling tapping screw is first hammered into designated position, so that in smooth section insertion product, since the protrusion section outer diameter between smooth section and spiral shell tail is larger, therefore the outer diameter that the hole generated after self drilling tapping screw is slightly larger than smooth section is hammered into, the size for being extruded into suitable thread segment tapping in hole and by the internal diameter of hole is entered convenient for changeover portion, enables the easier for installation of self drilling tapping screw.
Description
Technical field
The utility model relates to screw fields, more particularly, to a kind of self drilling tapping screw being easily installed.
Background technique
Screw is a kind of common fastener, is widely used on mechanical, electric appliance and building.
A kind of Multi-head screw as disclosed in the Chinese patent of Publication No. CN102777464A, including screw terminal and screw
Bar, screw terminal are fixedly connected in screw rod, and oblique helicitic texture is offered in screw rod.
It is had a problem that in above-mentioned patent, in the expense for constituting general assembly cost, highest just includes the processing in hole.
Tapping screw in practical applications, needs to process pre-manufactured hole on product.And in order to play pre-manufactured hole in practical applications
Good effect, it is necessary to the size Control of this some holes in quite stringent range.
Utility model content
In view of the above problems, the object of the present invention is to provide a kind of self drilling tapping screws being easily installed, and have
It is not required to the effect that key medicine processing pre-manufactured hole is easily installed.
The above-mentioned purpose of utility model of the utility model has the technical scheme that
A kind of self drilling tapping screw being easily installed, including screw head, spiral shell body and spiral shell tail, the spiral shell body is from the screw head to institute
It states spiral shell tail and is disposed with thread segment, changeover portion, smooth section and protrusion section；
The outer diameter of the protrusion section and the thread segment is all larger than the outer diameter of the smooth section, and the changeover portion is close to described
The outer diameters such as one end of smooth section and the smooth section, the changeover portion are outer close to one end of the thread segment and the thread segment etc.
The outer diameter of diameter, the changeover portion is incremented by from the smooth section to the thread segment, and the thread segment is fixedly connected with self tapping thread.
Self drilling tapping screw is first hammered into specific bit before self drilling tapping screw is installed by using above-mentioned technical proposal
It sets, so that, since the protrusion section outer diameter between smooth section and spiral shell tail is larger, hammering into self-drilling self-tapping in smooth section insertion product
The hole generated after screw is slightly larger than the outer diameter of smooth section, enters in hole and is extruded into the internal diameter of hole suitable convenient for changeover portion
The size for closing thread segment tapping, enables the easier for installation of self drilling tapping screw.
Further: the thread segment is fixedly connected with transition thread, and it is close that the transition thread is located at the thread segment
One end of the changeover portion, the transition thread and self tapping thread screw pitch having the same and helical angle, the transition thread
Thickness and width is gradually increased from the changeover portion to the self tapping thread.
By using above-mentioned technical proposal, be convenient for the tapping of self tapping thread, due to transition thread with self tapping thread with identical
Screw pitch and the angle of rifling, therefore transition thread is overlapped with the thread groove that self tapping thread opens up, and transition thread saves installation more
Power can also reduce the injury of self drilling tapping screw itself.
Further: the self tapping thread and the transition thread are respectively provided with far from the side of the spiral shell body in bladed.
By using above-mentioned technical proposal, so that the ability of self tapping thread and transition thread cutting products increases, Neng Gougeng
Add easily tapping.
It is further: the setting of spiral shell tail point end.
By using above-mentioned technical proposal, sharp spiral shell tail can assist self drilling tapping screw to boring to interiors of products.
Further: the smooth segment length is 2cm to 4cm.
By using above-mentioned technical proposal so that can be relatively stable after smooth section insertion product be fixed on product,
It can be stably fixed on product temporarily without tapping, be convenient for staff's batch operation.
Further: the self drilling tapping screw surface is coated with antistatic backing.
It by using above-mentioned technical proposal, avoids during drilling-tapping, self drilling tapping screw surface is because rub
Electro Sorb clast causes clast to hinder tapping.
Further: the antistatic backing surface is coated with wear-resistant coating.
Can reduce by using above-mentioned technical proposal, after wear-resistant coating can effectively reduce in drilling-tapping from brill certainly
The loss of screw is attacked, so that transition thread and self tapping thread keep sharp, it being capable of light cutting products.
It is further: to be fixedly connected with elastic washer between the screw head and the thread segment.
By using above-mentioned technical proposal, after self drilling tapping screw installs, screw head pushes against elastic washer, elastic washer
Rainwater can be stopped to penetrate into gap, reduce corrosion of the rainwater to self drilling tapping screw.
In conclusion the advantageous effects of the utility model include:
(1) by setting smooth section, changeover portion and protrusion section, before installing self drilling tapping screw, first by self-drilling self-tapping spiral shell
Designated position is hammered into, so that in smooth section insertion product, since the protrusion section outer diameter between smooth section and spiral shell tail is larger,
The outer diameter that the hole that generates after self drilling tapping screw is slightly larger than smooth section is hammered into, is entered in hole convenient for changeover portion and by hole
Internal diameter be extruded into the size of suitable thread segment tapping, enable the easier for installation of self drilling tapping screw；
(2) make tapping more smooth by the way that transition thread is arranged, there is changeover portion to install later more laborsaving, to brill certainly
The injury of tapping screw itself can also reduce；
(3) it can be avoided during drilling-tapping by the way that antistatic backing is arranged, self drilling tapping screw surface is because of friction
Electrify attracting debris, and clast is caused to hinder tapping.
Detailed description of the invention
Fig. 1 is the overall schematic of one embodiment of the utility model；
Fig. 2 is that one embodiment of the utility model shows the schematic diagram of antistatic backing.
Appended drawing reference: 1, screw head；2, spiral shell body；3, spiral shell tail；4, thread segment；5, changeover portion；6, smooth section；7, protrusion section；8,
Self tapping thread；9, elastic washer；10, transition thread；11, antistatic backing；12, wear-resistant coating.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
A kind of self drilling tapping screw being easily installed, as depicted in figs. 1 and 2, including screw head 1, spiral shell body 2 and spiral shell tail 3, spiral shell body
2 include thread segment 4, changeover portion 5, smooth section 6 and protrusion section 7.Thread segment 4, changeover portion 5, smooth section 6 and protrusion section 7 are from screw head 1
It is fixedly connected sequentially to spiral shell tail 3, self tapping thread 8 is fixedly connected on thread segment 4.
Screw head 1 is fixedly connected with elastic washer 9 on the face of thread segment 4, can be rubber ring, work as self drilling tapping screw
After installing, screw head 1 push against elastic washer 9, elastic washer 9 can stop rainwater penetrate into gap in, reduce rainwater to from bore from
Attack the corrosion of screw.
The setting of spiral shell tail 3 is in cone-shaped, therefore staff is before installing self drilling tapping screw, can be first by self-drilling self-tapping spiral shell
Designated position is hammered into, so that columned smooth section 6 is inserted into product, sharp spiral shell tail 3 can assist self drilling tapping screw
To boring to interiors of products.The length of smooth section 6 is 2cm to 4cm, can be 3cm, when staff hammers into self drilling tapping screw
Behind designated position, longer smooth section 6 enables to self drilling tapping screw to keep stablizing, and staff can be by all self tappings certainly
Drilling screw hammers into unified tapping behind designated position, is convenient for staff's batch operation.
The outer diameter of protrusion section 7 and the outer diameter of thread segment 4 are all larger than the outer diameter of smooth section 6, and the outer diameter of changeover portion 5 is from smooth
Section 6 is incremented by thread segment 4, one end of 5 connection screw thread section 4 of changeover portion and the equal outer diameters of thread segment 4, connect one end of smooth section 6 with
The outer diameters such as smooth section 6.
Hole is got on product after smooth section 6 is inserted into product by staff, since the outer diameter of protrusion section 7 is larger,
Therefore hole the outer diameter for being sized slightly larger than smooth section 6 and be connected on changeover portion 5, in this way be convenient for changeover portion 5 get into hole,
And the internal diameter of hole is extruded into the size of suitable 4 tapping of thread segment.
Thread segment 4 is fixedly connected with transition thread 10, the one end of thread segment 4 far from changeover portion 5 close to one end of changeover portion 5
Be fixedly connected with self tapping thread 8, transition thread 10 is connected to self tapping thread 8, and transition thread 10 and self tapping thread 8 have it is identical
Screw pitch and the angle of rifling, therefore transition thread 10 is overlapped with the thread groove that self tapping thread 8 opens up, the thickness and width of transition thread 10
Degree be gradually increased from changeover portion 5 to self tapping thread 8, the thread groove at the place of opening up also is gradually increased, this to install it is more laborsaving,
And the injury of self drilling tapping screw itself can be reduced.
Self tapping thread 8 and transition thread 10 are respectively provided with far from the side of spiral shell body 2 in bladed, and the edge of bladed makes self tapping spiral shell
The ability of 10 cutting products of tooth 8 and transition thread increases, being capable of more easily tapping.
The surface of self drilling tapping screw is coated with antistatic backing 11, and antistatic backing 11 can be static conductive coating, antistatic
Layer 11 can be avoided the surface that clast during drilling-tapping is adsorbed on self drilling tapping screw, and tapping is caused to be hindered by clast
Hinder, wear-resistant coating 12 is further coated on antistatic backing 11, wear-resistant coating 12 can be thermal spraying wear-resistant coating 12, wear-resistant coating 12
Transition thread 10 and self tapping thread 8 is enabled to keep sharp, it being capable of easily cutting products.
In conclusion self drilling tapping screw is hammered into designated position by staff, so that smooth section 6 is submerged in product and protected
It is fixed to keep steady, and protrusion section 7 is connected to punched hole hole outer diameter on changeover portion 5, and changeover portion 5 is got into hole can be by hole
Internal diameter is extruded into the size of 10 tapping of suitable transition thread, and staff utilizes 8 tapping of transition thread 10 and self tapping thread.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of self drilling tapping screw being easily installed, including screw head (1), spiral shell body (2) and spiral shell tail (3), it is characterised in that: described
Spiral shell body (2) is disposed with thread segment (4), changeover portion (5), smooth section (6) from the screw head (1) to the spiral shell tail (3) and dashes forward
It rises section (7)；
The outer diameter of the protrusion section (7) and the thread segment (4) is all larger than the outer diameter of the smooth section (6), the changeover portion (5)
Close to the outer diameters such as the one end of the smooth section (6) and the smooth section (6), the changeover portion (5) is close to the thread segment (4)
The outer diameter of the outer diameters such as one end and the thread segment (4), the changeover portion (5) is passed from the smooth section (6) Xiang Suoshu thread segment (4)
Increase, the thread segment (4) is fixedly connected with self tapping thread (8).
2. self drilling tapping screw according to claim 1, it is characterised in that: the thread segment (4) is fixedly connected with transition
Thread (10), the transition thread (10) are located at the one end of the thread segment (4) close to the changeover portion (5), the transition spiral shell
Tooth (10) and self tapping thread (8) screw pitch having the same and helical angle, the thickness and width of the transition thread (10) is from described
Changeover portion (5) Xiang Suoshu self tapping thread (8) is gradually increased.
3. self drilling tapping screw according to claim 2, it is characterised in that: the self tapping thread (8) and the transition spiral shell
Tooth (10) is respectively provided with far from the side of the spiral shell body (2) in bladed.
4. self drilling tapping screw according to claim 1, it is characterised in that: spiral shell tail (3) the tip setting.
5. self drilling tapping screw according to claim 1, it is characterised in that: smooth section (6) length is 2cm to 4cm.
6. self drilling tapping screw according to claim 1, it is characterised in that: the self drilling tapping screw surface is coated with anti-
Electrostatic layer (11).
7. self drilling tapping screw according to claim 1, it is characterised in that: the self drilling tapping screw surface is coated with resistance to
It grinds coating (12).
8. self drilling tapping screw according to claim 1, it is characterised in that: the screw head (1) and the thread segment (4) it
Between be fixedly connected with elastic washer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060822.5U CN209510858U (en) | 2018-12-08 | 2018-12-08 | A kind of self drilling tapping screw being easily installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060822.5U CN209510858U (en) | 2018-12-08 | 2018-12-08 | A kind of self drilling tapping screw being easily installed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209510858U true CN209510858U (en) | 2019-10-18 |
Family
ID=68193437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822060822.5U Active CN209510858U (en) | 2018-12-08 | 2018-12-08 | A kind of self drilling tapping screw being easily installed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209510858U (en) |
-
2018
- 2018-12-08 CN CN201822060822.5U patent/CN209510858U/en active Active
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