CN203655830U - Anti-loosing sunk screw - Google Patents
Anti-loosing sunk screw Download PDFInfo
- Publication number
- CN203655830U CN203655830U CN201320787342.3U CN201320787342U CN203655830U CN 203655830 U CN203655830 U CN 203655830U CN 201320787342 U CN201320787342 U CN 201320787342U CN 203655830 U CN203655830 U CN 203655830U
- Authority
- CN
- China
- Prior art keywords
- screw
- screw body
- sunk
- thread hole
- sunk screw
- 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
- 238000010079 rubber tapping Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking 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 utility model discloses an anti-loosing sunk screw which comprises a screw body, self-tapping threads, a standard thread hole, a straight-line-shaped groove, a round counter bore and a spiral stopping device. The screw body is a sunk screw body with the self-tapping threads, the sunk head top of the screw body is provided with the straight-line-shaped groove and the round counter bore, the standard thread hole is machined in the center of the screw body, and the spiral stopping device is arranged on the lower conical surface of a sunk head of the screw body. The anti-loosing sunk screw belongs to the technical field of threaded fasteners. The structure of the standard thread hole is additionally arranged in the center of the sunk screw, and the structure of the spiral stopping device is arranged on the lower conical surface of the sunk head of the screw body, so that the effects of reducing damage to installation plates by part assembling and disassembling and preventing screw loosing are achieved, the reliability of part installation is improved, and meanwhile the requirement for double-layer installation of parts at the same position is met.
Description
Technical field
The utility model belongs to threaded fastener technology field, relates to a kind of locking sunk screw.
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, switching is when 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, in the time that 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 thering 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.
Model utility content
In order to address the above problem, the utility model provides a kind of locking sunk screw, thereby reaches the effect of avoiding preferably mounting plate to damage.
The utility model is achieved by following technical solution.
A kind of locking sunk screw, 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, be processed with standard thread hole at described screw body center, 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 beneficial effects of the utility model are:
The locking sunk screw of one described in the utility model, by increase by a standard thread hole structure on sunk screw, after sunk screw in this programme is assembled on mounting plate, also can directly assemble other parts by standard screws on its basis, reduce part and loaded and unloaded the damage 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, when dismounting the tightening and unclamp and be all difficult for making tapping screw loosening of standard screws, increased the reliability that part is installed.
Brief description of the drawings
Structural representation when Fig. 1 is the utility model use;
Fig. 2 is the utility model structural representation;
Fig. 3 is the utility model effect structure figure.
In figure: 1-standard screws, 2-sunk 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
Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, the locking sunk screw of one described in the utility model, 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, be processed with vertically standard thread hole 23 at described screw body 21 centers, 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.
The locking sunk screw of one described in the technical program, its general shape is identical with common fluting countersunk self-tapping screw, be processed with vertically the standard thread hole 23 of certain depth at sunk screw 2 centers, there are a word fluting 24 and circle counterbore 25 at countersunk head top, one word fluting 24 uses screw-driver rotary screw main body 21 to shoot mounting plate 4 when installing, the diameter of circle counterbore 25 is to add 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 one 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, in the time 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, form gear lip at spiral block card 26 end knife-edge parts, block spiral block card 26, assembly 3 is installed, when dismounting, standard screws 1 is tightened and unclamps, screw body 21 is all difficult for loosening, effectively avoid 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 sunk screw with threaded hole 2 in mounting plate 4, and make the end face of sunk 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 sunk 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 the parts of first seldom dismantling with the fixing first layer of sunk screw 2, then the parts of normal dismounting are installed on this basis, realize the bilayer even multilayer installation of component at 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 sunk screw 2 while making part install, dismantle, and standard screws 1 and standard thread hole 23 can repeatedly be used, thereby avoid 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. a locking sunk screw, 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: be processed with standard thread hole (23) at described screw body (21) center, under the countersunk head of screw body (21), on the conical surface, establish spiral block card (26).
2. the locking sunk screw of one 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. the locking sunk screw of one 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. the locking sunk screw of one 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. the locking sunk screw of one 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 |
|---|---|---|---|
| CN201320787342.3U CN203655830U (en) | 2013-12-03 | 2013-12-03 | Anti-loosing sunk screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320787342.3U CN203655830U (en) | 2013-12-03 | 2013-12-03 | Anti-loosing sunk screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655830U true CN203655830U (en) | 2014-06-18 |
Family
ID=50922221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320787342.3U Expired - Fee Related CN203655830U (en) | 2013-12-03 | 2013-12-03 | Anti-loosing sunk screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671424A (en) * | 2013-12-03 | 2014-03-26 | 贵阳永青仪电科技有限公司 | Stop countersunk head self-tapping screw with threaded hole |
| CN107314019A (en) * | 2017-06-07 | 2017-11-03 | 安徽新兴翼凌机电发展有限公司 | A kind of new many adaptation decoration fixing screws |
-
2013
- 2013-12-03 CN CN201320787342.3U patent/CN203655830U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671424A (en) * | 2013-12-03 | 2014-03-26 | 贵阳永青仪电科技有限公司 | Stop countersunk head self-tapping screw with threaded hole |
| CN103671424B (en) * | 2013-12-03 | 2017-01-25 | 贵阳永青仪电科技有限公司 | Stop countersunk head self-tapping screw with threaded hole |
| CN107314019A (en) * | 2017-06-07 | 2017-11-03 | 安徽新兴翼凌机电发展有限公司 | A kind of new many adaptation decoration fixing screws |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |