CN103671424A - Stop countersunk head self-tapping screw with threaded hole - Google Patents
Stop countersunk head self-tapping screw with threaded hole Download PDFInfo
- Publication number
- CN103671424A CN103671424A CN201310641589.9A CN201310641589A CN103671424A CN 103671424 A CN103671424 A CN 103671424A CN 201310641589 A CN201310641589 A CN 201310641589A CN 103671424 A CN103671424 A CN 103671424A
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- Prior art keywords
- screw
- countersunk head
- threaded hole
- self
- tapping screw
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- 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.)
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 36
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- -1 plank Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
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Abstract
The invention discloses a stop countersunk head self-tapping screw with a threaded hole, and belongs to the technical field of threaded fasteners. The stop countersunk head self-tapping screw comprises a screw body, self-tapping threads, the standard threaded hole, a straight slot, a circular countersink and a spiral blocking clamp. The screw body is a countersunk head screw with the self-tapping threads, the straight slot and the circular countersink are formed in the top of a countersunk head of the screw body, the standard threaded hole is formed in the center of the screw body, and the spiral blocking clamp is arranged on a lower conical surface of the countersunk head of the screw body. The stop countersunk head self-tapping screw has the advantages that the standard threaded hole is added to the center of the countersunk head screw, the spiral blocking clamp is arranged on the lower conical surface of the countersunk head of the countersunk head screw, accordingly, effects of reducing damage to mounting plates due to component assembly and disassembly and preventing the screw from being loosened can be realized, the component mounting reliability can be improved, and the requirement on mounting components at the same positions on two layers can be met.
Description
Technical field
The invention belongs to threaded fastener technology field, relate to a kind of anti-loosing type countersunk self-tapping screw with threaded hole.
Background technique
In the prior art, for installing on as materials such as plank, woodwork plate, cardboard, wood veneer, plastic boards in some softwood matter, during switching object, because material is tightened installation compared with the soft tapping screw that uses more, easy for installation and random.But the tapping screw mounting type for this class material also comes with some shortcomings, first, mounting plate material is relatively soft, when needs are pulled down assembly, takes apart after tapping screw, this will be become flexible by the screw hole of tapping screw tapping, cause tapping screw no longer can install and use at same position, if many mounting or dismounting several times, even cause this hole total failure, parts are serious after installing and going back to be become flexible and comes off, and finally causes whole damage parts; In addition, too much when the parts that needs are installed, mounting plate peace be can not load, or need again miscellaneous part to be installed being mounted on parts, and mounting plate is not while there is no installing space, such mounting structure and mode will no longer can meet the demands, and have limited the design and installation of part.
Summary of the invention
In order to address the above problem, to the invention provides a kind of anti-loosing type countersunk self-tapping screw with threaded hole, thereby reach the effect of avoiding preferably mounting plate to damage.
The present invention is achieved by following technical solution.
A kind of anti-loosing type countersunk self-tapping screw with threaded hole, comprise screw body, Thread Forming TF, standard thread hole, a word fluting, circle counterbore and spiral block card, described screw body is the sunk screw with Thread Forming TF, one word fluting and circle counterbore are arranged at the countersunk head top of screw body, at described screw body center, be processed with standard thread hole, under the countersunk head of screw body, on the conical surface, establish spiral block card.
The rotation direction of described spiral block card is consistent with the rotation direction of Thread Forming TF.
The diameter of described round counterbore is greater than the nominal diameter in standard thread hole.
The degree of depth of described round counterbore is concordant with a word fluting bottom.
The rotation direction of described standard thread hole screw thread is identical with the rotation direction of Thread Forming TF.
The invention has the beneficial effects as follows:
A kind of anti-loosing type countersunk self-tapping screw with threaded hole of the present invention, by increase by a standard thread hole structure on sunk screw, after countersunk self-tapping screw in this programme is assembled on mounting plate, also can directly by standard screws, assemble other parts on its basis, reduced the damage of part handling to mounting plate, the double-deck needs of installing of part same position have been met simultaneously, again due to its special card blocking structure design, parts are installed, during dismounting, standard screws tightens and unclamps and be all difficult for making tapping screw loosening, increased the reliability that part is installed.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention while using;
Fig. 2 is structural representation of the present invention;
Fig. 3 is effect structure figure of the present invention.
In figure: 1-standard screws, 2-countersunk self-tapping screw, 21-screw body, 22-Thread Forming TF, 23-standard thread hole, 24-mono-word fluting, 25-circle counterbore, 26-spiral back-up ring, 3-assembly, 4-mounting plate.
Embodiment
Below in conjunction with accompanying drawing, further describe technological scheme of the present invention, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of anti-loosing type countersunk self-tapping screw with threaded hole of the present invention, comprise screw body 21, Thread Forming TF 22, standard thread hole 23, a word fluting 24, circle counterbore 25 and spiral block card 26, described screw body 21 is the sunk screw with Thread Forming TF 22, one word fluting 24 and circle counterbore 25 are arranged at the countersunk head top of described screw body 21, at described screw body 21 centers, be processed with vertically standard thread hole 23, under the countersunk head of screw body 21, on the conical surface, establish spiral block card 26.
The rotation direction of described spiral block card 26 is consistent with the rotation direction of Thread Forming TF 22.
The rotation direction of described standard thread hole 23 screw threads is identical with the rotation direction of Thread Forming TF 22.
Anti-loosing type countersunk self-tapping screw a kind of with threaded hole described in the technical program, its general shape is identical with common fluting countersunk self-tapping screw, at countersunk self-tapping screw 2 centers, be processed with vertically the standard thread hole 23 of certain depth, at countersunk head top, there are a word fluting 24 and circle counterbore 25, one word fluting 24 is used screw-driver rotary screw main body 21 to shoot mounting plate 4 when installing, the diameter of circle counterbore 25 for adding 0.5mm on the nominal diameter basis in standard thread hole 23, the degree of depth and a word 24 bottoms of slotting are concordant, circle counterbore 25 is that a word 24 limits of slotting produce burrs and block tapped hole 23 when avoiding tightening screw body 21, affect the installation of follow-up standard screws 1, under countersunk head, on the conical surface, be processed with spiral block card 26, when tightening screw body 21, spiral block card 26 can be along sense of rotation compression counter sink material, the counter sink material that installs rear one side mounting plate 4 compresses spiral block card 26 to the reaction force of screw body 21, make screw body 21 install tighter and be difficult for loosening, on the other hand, because of spiral block card 26 rotation directions consistent with the rotation direction of Thread Forming TF 22, after screw body 21 is tightened, compressed mounting plate 4 material bounce-backs, at spiral block card 26 end knife-edge parts, form gear lip, block spiral block card 26, assembly 3 is installed, during dismounting, standard screws 1 is tightened and unclamps, screw body 21 is all difficult for loosening, effectively avoided the sunk screw mounting hole on mounting plate 4 to be worn.
The using method of the technical program and instrument thereof are identical with common self tapping slotted screw, the technical program will be used before parts are installed, the mounting point first needing at assembly 3 is vertically shot countersunk self-tapping screw with threaded hole 2 in mounting plate 4, and make the end face of countersunk self-tapping screw 2 concordant with the plane of mounting plate 4, re-use in the standard thread hole 23 that corresponding standard screws 1 is screwed into countersunk self-tapping screw 2, assembly 3 is installed on mounting plate 4, thereby realizes the reliable installation of assembly 3 on softer material.Adopt the technical program, can also be by first with countersunk self-tapping screw 2 parts that fixedly first layer is seldom dismantled, then the parts of often dismantling are installed on this basis, realize component in the even multilayer installation of bilayer of same position.
Such mounting design, only need be by tightening and unclamp to realize the mounting or dismounting of part between standard screws 1 and the standard thread hole 23 of countersunk self-tapping screw 2 while making part install, dismantle, and standard screws 1 and standard thread hole 23 can repeatedly be used, thereby avoided the mounting hole on mounting plate 4 damaged, such mounting type is convenient and reliable, is used in installation and the switching of component on the soft materials such as plank, cardboard, wood veneer.If the technical program is cancelled to spiral block card 26 structures, also can be used as common countersunk self-tapping screw and use.
Claims (5)
1. an anti-loosing type countersunk self-tapping screw with threaded hole, comprise screw body (21), Thread Forming TF (22), standard thread hole (23), a word fluting (24), circle counterbore (25) and spiral block card (26), described screw body (21) is the sunk screw of band Thread Forming TF (22), one word fluting (24) and circle counterbore (25) are arranged at the countersunk head top of screw body (21), it is characterized in that: at described screw body (21) center, be processed with standard thread hole (23), under the countersunk head of screw body (21), on the conical surface, establish spiral block card (26).
2. a kind of anti-loosing type countersunk self-tapping screw with threaded hole according to claim 1, is characterized in that: the rotation direction of described spiral block card (26) is consistent with the rotation direction of Thread Forming TF (22).
3. a kind of anti-loosing type countersunk self-tapping screw with threaded hole according to claim 1, is characterized in that: the diameter of described round counterbore (25) is greater than the nominal diameter of standard thread hole (23).
4. a kind of anti-loosing type countersunk self-tapping screw with threaded hole according to claim 1, is characterized in that: the degree of depth of described round counterbore (25) and a word (24) bottom of slotting is concordant.
5. a kind of anti-loosing type countersunk self-tapping screw with threaded hole according to claim 1, is characterized in that: the rotation direction of described standard thread hole (23) screw thread is identical with the rotation direction of Thread Forming TF (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641589.9A CN103671424B (en) | 2013-12-03 | 2013-12-03 | Stop countersunk head self-tapping screw with threaded hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641589.9A CN103671424B (en) | 2013-12-03 | 2013-12-03 | Stop countersunk head self-tapping screw with threaded hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671424A true CN103671424A (en) | 2014-03-26 |
| CN103671424B CN103671424B (en) | 2017-01-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310641589.9A Active CN103671424B (en) | 2013-12-03 | 2013-12-03 | Stop countersunk head self-tapping screw with threaded hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103671424B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091661A (en) * | 2014-06-12 | 2014-10-08 | 宜兴华源电工设备有限公司 | Dual lightning protection and explosion-proof composite post type insulator |
| CN109823013A (en) * | 2019-01-01 | 2019-05-31 | 北京菲尔泰科技有限公司 | Anti- adherency conveyer belt |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191323744A (en) * | 1913-10-20 | 1914-01-15 | William Anthony Minchin | Improved Devices for Securing Carpets, Rugs and the like in Position. |
| US2002741A (en) * | 1932-07-30 | 1935-05-28 | Emma F Hunt | Screw fastening means |
| GB2237615A (en) * | 1989-11-02 | 1991-05-08 | Itw Ateco Gmbh | Threaded insert |
| JPH07279929A (en) * | 1994-04-01 | 1995-10-27 | Ricoh Co Ltd | Fastener and fastening method |
| CN1251886A (en) * | 1998-10-19 | 2000-05-03 | 维奈克斯公司 | Sunk wood screw |
| CN201420756Y (en) * | 2009-06-01 | 2010-03-10 | 宁波东港紧固件制造有限公司 | Full-thread screw with female screw hole in-line countersunk head nut removing structure |
| CN203655830U (en) * | 2013-12-03 | 2014-06-18 | 贵阳永青仪电科技有限公司 | Anti-loosing sunk screw |
-
2013
- 2013-12-03 CN CN201310641589.9A patent/CN103671424B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191323744A (en) * | 1913-10-20 | 1914-01-15 | William Anthony Minchin | Improved Devices for Securing Carpets, Rugs and the like in Position. |
| US2002741A (en) * | 1932-07-30 | 1935-05-28 | Emma F Hunt | Screw fastening means |
| GB2237615A (en) * | 1989-11-02 | 1991-05-08 | Itw Ateco Gmbh | Threaded insert |
| JPH07279929A (en) * | 1994-04-01 | 1995-10-27 | Ricoh Co Ltd | Fastener and fastening method |
| CN1251886A (en) * | 1998-10-19 | 2000-05-03 | 维奈克斯公司 | Sunk wood screw |
| CN201420756Y (en) * | 2009-06-01 | 2010-03-10 | 宁波东港紧固件制造有限公司 | Full-thread screw with female screw hole in-line countersunk head nut removing structure |
| CN203655830U (en) * | 2013-12-03 | 2014-06-18 | 贵阳永青仪电科技有限公司 | Anti-loosing sunk screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091661A (en) * | 2014-06-12 | 2014-10-08 | 宜兴华源电工设备有限公司 | Dual lightning protection and explosion-proof composite post type insulator |
| CN109823013A (en) * | 2019-01-01 | 2019-05-31 | 北京菲尔泰科技有限公司 | Anti- adherency conveyer belt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671424B (en) | 2017-01-25 |
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Address after: No. 249, Baiyun North Road, Baiyun District, Guiyang City, Guizhou Province Patentee after: Guiyang Yongqing Intelligent Control Technology Co.,Ltd. Address before: No. 249, Baiyun North Road, Baiyun District, Guiyang City, Guizhou Province Patentee before: GUIYANG YONGQING INSTRUMENTS & ELECTRONIC SCIENCEAND TECHNOLOGY Co.,Ltd. |