CN202100590U - Anti-detachment screw - Google Patents
Anti-detachment screw Download PDFInfo
- Publication number
- CN202100590U CN202100590U CN2011201061485U CN201120106148U CN202100590U CN 202100590 U CN202100590 U CN 202100590U CN 2011201061485 U CN2011201061485 U CN 2011201061485U CN 201120106148 U CN201120106148 U CN 201120106148U CN 202100590 U CN202100590 U CN 202100590U
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- China
- Prior art keywords
- head
- tensile strength
- tie layer
- nti
- threaded stem
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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.)
- Expired - Fee Related
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- Portable Nailing Machines And Staplers (AREA)
Abstract
The utility model provides an anti-detachment screw which comprises a threaded rod and a pushing head, wherein, the threaded rod is connected with the pushing head; a protuberance formed on the pushing head is connected with the pushing head by a connecting layer; the tensile strength of the connecting layer is smaller than the tensile strength of the pushing head; and the connecting layer has limit tensile strength. When the threaded rod is totally screwed into the inner part of an object and a force with strength larger than the limit tensile strength of the connecting layer is continuously exerted, the anti-detachment screw is rotated, the connecting layer cracks, the protuberance falls off from the pushing head, and the pushing head becomes a pushing head with a smooth surface, so that the anti-detachment screw cannot be detached after utilized to fix the object, and the stability of the fixed object is guaranteed.
Description
Technical field
The utility model relates to a kind of screw, relates in particular to a kind of nti-removing nut nail.
Background technique
Screw frequency of utilization in daily life is very high, no matter be furniture, door and window, the traffic tool and even electronic product etc., is seen everywhere, and is used for connecting, fixing various assemblies.And the use of conventional screw just can push ahead or withdraw from backward by screw-driver or other similar instruments, use comparatively easy, but when the screw object, discharged by the people easily in public.Such as the car plate of automobile or the article such as direction board in the park; If the screw of fixing these article is removed, some problems then appear easily, and stolen like car plate, direction board is lost etc.; Bring some inconvenience for people's life, even even more serious will produce behavior such as illegal stealing.Therefore just hope in the practical application to have a kind of can be in case the screw that unloads, though rivet can prevent dismounting, rivet needs professional tool to operate; Operation requires high, if misoperation, even can damage by the connection object; Not only not attractive in appearance, reliability also can not guarantee.Therefore hope to have a kind of manipulable nti-removing nut nail of common non-industry professional tool that can let.
Summary of the invention
In order to overcome the deficiency of existing technology, prevent that screw from will being taken off, the utility model provides a kind of nti-removing nut nail; Comprise threaded stem and advance head, threaded stem is connected with advancing head, and described propelling head is provided with projection; Described projection is connected by tie layer with advancing head, and said tie layer tensile strength is less than advancing a tensile strength, and there is ultimate tensile strength in said tie layer; When threaded stem is threaded into interior of articles fully, when continuing to apply the power greater than the ultimate tensile strength of tie layer, rotate the nti-removing nut nail; The tie layer fracture, projection comes off from advancing head.
The utility model is worked as threaded stem and is threaded into before the interior of articles fully; Because the tip of threaded stem and the effect of helical thread portion make the nti-removing nut nail constantly be threaded into interior of articles; That is to say that the part of the force mainly is distributed in threaded shank portion, therefore be unlikely to make tie layer to rupture; When threaded stem is threaded into interior of articles fully, continues to strengthen strength and rotate the nti-removing nut nail, because threaded stem has been embedded into object surfaces fully; That is to say and all stressedly all will be added on the tie layer; At this moment, when the power that continues to apply greater than the ultimate tensile strength of tie layer, stressed its ultimate tensile strength that surpassed of tie layer; Thereby cause fracture, projection comes off from advancing head.The post-rift nti-removing nut nail of tie layer no longer comprises projection; Advance head to become the propelling head of surface smoothing; Promptly advance head to become the propelling head the same with round-headed nail; So just can not utilize screw-driver or other similar instruments to dismantle again, reach and prevent the purpose that is removed, easily realize the nti-removing nut nail.
The further improvement of the utility model is that the ultimate tensile strength of said tie layer is 850～2000N.The words that the ultimate tensile strength of tie layer is too little cause wrong diagnosis easily, that is to say that tie layer has just ruptured before threaded stem is threaded into interior of articles fully, will cause the nti-removing nut nail also not to be threaded into interior of articles fully so and just can not continue to have twisted again; On the contrary, if the ultimate tensile strength of tie layer is too big, even after threaded stem is threaded into interior of articles fully; Tie layer also is difficult to fracture; So just do not distinguished with traditional screw, the ultimate tensile strength of the said tie layer of the utility model is 850～2000N, and being provided with of this scope can guarantee that threaded stem is threaded into after the interior of articles fully; Excessive or the too small misgivings of its ultimate tensile strength have been avoided in the tie layer fracture.
The further improvement of the utility model is; Described propelling head is cross propelling head, advances head and threaded stem facing surfaces to be provided with a cross groove, and four identical projections that are centrosymmetric are arranged around the cross groove; Four identical projections that are centrosymmetric can guarantee stressed more even; Be convenient to nti-removing nut nail is threaded into interior of articles, more laborsaving, also because stressedly evenly and better avoid wrong diagnosis; That is to say and avoided before threaded stem is threaded into interior of articles fully that tie layer just problem such as has ruptured.
The further improvement of the utility model is; Described propelling head advances head for yi word pattern, advances head and threaded stem facing surfaces to be provided with a yi word pattern groove, and two identical projections that are centrosymmetric are arranged; Two identical projections that are centrosymmetric; Utilize folk prescription to the principle of rotating, when saving material, also can guarantee well stressed evenly.
The nti-removing nut nail of the utility model comprises threaded stem and advances head, and threaded stem and propelling head are connected, and described propelling head is provided with projection; Described projection is connected by tie layer with advancing head, and said tie layer tensile strength is less than advancing a tensile strength, and there is ultimate tensile strength in said tie layer; When threaded stem is threaded into interior of articles fully, when continuing to apply the power greater than the ultimate tensile strength of tie layer, rotate the nti-removing nut nail; The tie layer fracture, projection comes off from advancing head, advances head to become the propelling head of surface smoothing; Just can not be removed afterwards thereby realize utilizing the nti-removing nut nail to fix object, guarantee the advantages such as stability of fixed object.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation that the utility model embodiment 2 advances head;
Fig. 3 is the structural representation that the utility model embodiment 3 advances head.
Mark among the figure: 1-threaded stem; 2-advances head; The 3-projection; The 4-tie layer.
Embodiment
Embodiment below in conjunction with concrete is further described the utility model.
Embodiment 1:
As shown in Figure 1, this example provides a kind of nti-removing nut nail, comprises threaded stem 1 and advances 2, and the length of threaded stem 1 is 3cm; Advancing a maximum cross section diameter of 2 is 1cm, and threaded stem 1 and propelling 2 is connected, and described propelling 2 is provided with projection 3; The maximum cross section radius that projection 3 is surrounded is 0.8cm, described projection 3 with advance 2 to be connected by tie layer 4, the tensile strength of tie layer 4 is less than the tensile strength of propelling 2; There is ultimate tensile strength in tie layer 4, when threaded stem 1 is threaded into interior of articles fully, when continuing to apply the power greater than the ultimate tensile strength of tie layer 4; Rotation nti-removing nut nail, tie layer 4 fractures, projection 3 is from advancing 2 to come off.
This example is before threaded stem 1 is threaded into interior of articles fully; Because threaded stem 1 is provided with tip and helical thread portion; Thereby make the nti-removing nut nail constantly be threaded into interior of articles, that is to say that the part of the force mainly is distributed in threaded stem 1 part, therefore be unlikely to make tie layer 4 to rupture; When threaded stem 1 is threaded into interior of articles fully, continues to strengthen strength and rotate the nti-removing nut nail, at this moment; Because threaded stem 1 has been embedded into object surfaces fully, that is to say all stressedly all will be added on the tie layer 4, at this moment; When the power that continues to apply greater than the ultimate tensile strength of tie layer 4; The stressed of tie layer 4 surpassed its ultimate tensile strength, thereby causes fracture, and projection 3 will come off from advancing 2.Tie layer 4 post-rift nti-removing nut nails no longer comprise projection 3; Advance 2 become surface smoothing the propelling head; Promptly advance 2 to become the propelling head the same with round-headed nail; So just can not utilize screw-driver or other similar instruments to dismantle again, this example has reached and has prevented the purpose that is removed, easily realizes the nti-removing nut nail.
Embodiment 2:
Different with embodiment 1 is, as shown in Figure 2, advances 2 to be cross propelling head; Advance 2 to be provided with a cross groove with threaded stem 1 facing surfaces, the identical projection 3 that has four 3, four of identical projections that are centrosymmetric to be centrosymmetric around the cross groove can guarantee stressed more even; Be convenient to the nti-removing nut nail is threaded into interior of articles; More laborsaving, also, that is to say and avoided before threaded stem is threaded into interior of articles fully because stressedly evenly and better avoid wrong diagnosis; Tie layer 4 just problem such as has ruptured, and equally also can reach the well anti-effect of unloading.
Embodiment 3:
Different with embodiment 2 is, as shown in Figure 3, advances 2 to be yi word pattern propelling head; Advance 2 to be provided with a yi word pattern groove, the identical projection 3 that has two 3, two of identical projections that are centrosymmetric to be centrosymmetric with threaded stem 1 facing surfaces; Utilize folk prescription to the principle of rotating; When saving material, also can guarantee well stressed evenly, reach anti-effect of unloading.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.
Claims (4)
1. a nti-removing nut is followed closely; Comprise threaded stem and advance head, threaded stem is connected with advancing head, it is characterized in that; Described propelling head is provided with projection; Described projection is connected by tie layer with advancing head, and said tie layer tensile strength is less than advancing a tensile strength, and there is ultimate tensile strength in said tie layer.
2. nti-removing nut nail according to claim 1 is characterized in that the ultimate tensile strength of said tie layer is 850～2000N.
3. nti-removing nut nail according to claim 2 is characterized in that, described propelling head is cross propelling head, advances head and threaded stem facing surfaces to be provided with a cross groove, and four identical projections that are centrosymmetric are arranged around the cross groove.
4. nti-removing nut nail according to claim 2 is characterized in that, described propelling head advances head for yi word pattern, advances head and threaded stem facing surfaces to be provided with a yi word pattern groove, and two identical projections that are centrosymmetric are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201061485U CN202100590U (en) | 2011-04-12 | 2011-04-12 | Anti-detachment screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201061485U CN202100590U (en) | 2011-04-12 | 2011-04-12 | Anti-detachment screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100590U true CN202100590U (en) | 2012-01-04 |
Family
ID=45386604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201061485U Expired - Fee Related CN202100590U (en) | 2011-04-12 | 2011-04-12 | Anti-detachment screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI804025B (en) * | 2021-10-27 | 2023-06-01 | 明泰科技股份有限公司 | Screw having stacked screw heads |
-
2011
- 2011-04-12 CN CN2011201061485U patent/CN202100590U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI804025B (en) * | 2021-10-27 | 2023-06-01 | 明泰科技股份有限公司 | Screw having stacked screw heads |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20120412 |