CN201502600U - Fast earthquake and looseness prevention self-tapping screw for assembling plastic product - Google Patents
Fast earthquake and looseness prevention self-tapping screw for assembling plastic product Download PDFInfo
- Publication number
- CN201502600U CN201502600U CN2009202077977U CN200920207797U CN201502600U CN 201502600 U CN201502600 U CN 201502600U CN 2009202077977 U CN2009202077977 U CN 2009202077977U CN 200920207797 U CN200920207797 U CN 200920207797U CN 201502600 U CN201502600 U CN 201502600U
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- China
- Prior art keywords
- screw
- screw rod
- thread
- threads
- plasthetics
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- Expired - Lifetime
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Abstract
The utility model relates to a fast earthquake and looseness prevention self-tapping screw for assembling a plastic product, comprising a screw head and a screw rod provided with threads on the surface, wherein the threads on the surface of the screw rod are double threads with same pitches, same bottom diameters and different outside diameters, a thread angle with large outside diameter threads is 30 degrees, and a thread angle with small outside diameter threads is 60 degrees; and three non-equilateral stop grooves which are uniformly arranged along the threads are arranged on thread teeth on a certain length at the end of the screw rod, and the stop direction of the stop grooves are reverse with the thread direction of a screw. As the double threads with same pitches, same bottom diameters and different outside diameters are adopted, the self-tapping screw can be fast locked into a plastic hole and keep circumferential and uniform stress in the locking process so as to prevent the screw from inclining during locking; three non-equilateral stop grooves which are uniformly arranged along the thread teeth are arranged on the thread teeth of about 4 thread pitches at the end of the screw, and the structure can lead the screw to be locked in with lower assembly torque force and fulfill the functions of stop and looseness prevention after assembly. The self-tapping screw has the advantages of unique concept and safe and convenient use and has popularization value.
Description
Technical field:
The utility model relates to a kind of fastening connection piece, more specifically to a kind of quick shockproof locking tapping screw that is used for the plasthetics assembling.
Background technique:
In the prior art, the screw that is used for the plasthetics assembling is generally common single start thread screw, and its tooth form angle is 30 ° or 45 °, and its problem that produces in assembly process mainly is: speed was slower when common monofilament screw assembled, and, easily tilt and cause workpiece to be scrapped because of misalignment plastic cement hole.The screw that adopts common double-start thread is also arranged recently, though part has solved the problem that the single start thread screw produces in assembly process, it is bigger to lock torsion, has strengthened the tool loss that is used to assemble, and has increased cost of production.Another deficiency is that the anti-loosening property after the screw of common double-start thread assembles is unsatisfactory.For solving locking problem, general enterprise adopts the way of dwindling the plastic cement aperture to meet the demands, but need the bigger torsion of locking when so just causing the screw assembling, the increase of locking torsion has not only increased the loss of assembly tool, even can take place because of locking torsion too big, and make screw produce the risk of fracture, bring no small puzzlement to enterprise.
The model utility content:
The purpose of this utility model be provide at the prior art deficiency a kind of have good to neutrality, assembling torsion is low and the quick shockproof locking tapping screw that is used for plasthetics assembling that can lock fast.
The purpose of this utility model is to realize by following measure: a kind of quick shockproof locking tapping screw that is used for the plasthetics assembling, comprise screw head, surperficial threaded screw rod, its special way is, described screw surface screw thread is the double-start thread with footpath various outer diameter of the identical end of identical pitch, described big outer-diameter threads tooth form angle is 30 degree, and little outer-diameter threads tooth form angle is 60 degree.
Worm tooth on the certain-length of described screw rod end is provided with along three uniform inequilateral retaining grooves of screw thread, and the retaining direction of described retaining groove is opposite with spiral shell Nail hand of spiral.
Described screw rod end certain-length is the tooth distance of 3-5 the tooth in screw rod end.
The inequilateral locking trough of a described screw rod end 3-5 Ya Geya becomes to arrange with the screw rod shaft axis is consistent.
The inequilateral locking trough of a described screw rod end 3-5 Ya Geya becomes and the angled arrangement of screw rod shaft axis.
Described screw rod end is the horizontal tail shape.
Compared with prior art, the quick shockproof locking tapping screw that is used for the plasthetics assembling that employing the utility model proposes, owing to adopted double-start thread with footpath various outer diameter of the identical end of identical pitch, because of pitch ambassador screw can be locked in the plastic cement hole fast, and lock and to keep circumference stressed evenly in the process, it is good that balance is locked the centering performance, prevents to tilt when screw from locking.The worm tooth of about 4 the tooth distances in screw end is provided with along three uniform inequilateral locking troughs of screw thread, such structure can make screw lock with lower assembling torsion, and can play the locking effect of retaining after the assembling, be particularly suitable for to bear in the environment than strong motion, as electric tool.Design of the present utility model is unique, and is safe and convenient to use, has promotional value.
Description of drawings:
Fig. 1 is the utility model embodiment plan view.
Fig. 2 is Fig. 1 embodiment A-A sectional view.
Embodiment:
Below in conjunction with accompanying drawing embodiment is elaborated:
Fig. 1～Fig. 2 has provided the utility model embodiment's structural representation.A kind of quick shockproof locking tapping screw that is used for the plasthetics assembling, comprise screw head 1, surperficial threaded screw rod 2, described screw surface screw thread is the double-start thread with footpath various outer diameter of the identical end of identical pitch, described big outer-diameter threads 3 tooth form angles are 30 degree, and little outer-diameter threads 4 tooth form angles are 60 degree.Owing to adopted large screw pitch, thus screw can lock fast in the plasthetics, little outer-diameter threads can keep getting well to neutrality, balance is locked performance, prevents the fashionable deflection of screw threads.
Worm tooth on the certain-length of described screw rod end is provided with along three uniform inequilateral retaining grooves of screw thread, and the retaining direction of described retaining groove is opposite with spiral shell Nail hand of spiral.Described screw rod end certain-length is the tooth distance of 3-5 the tooth in screw rod end, is 4 tooth distances in the present embodiment.The inequilateral retaining groove of 4 Ya Geya in described screw rod end is arranged with the screw rod shaft axis is consistent, also can make and the angled arrangement of screw rod shaft axis, and its angle can be selected to 40 degree scopes at 0 degree.Described screw rod end is the horizontal tail shape.Such structure characteristic can make screw lock with lower assembling torsion, and can play the locking self-locking action of retaining after the assembling, is specially adapted to bear in the environment than strong motion.
The foregoing description does not constitute restriction of the present utility model, and all employings are equal to the technological scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.
Claims (6)
1. one kind is used for the quick shockproof locking tapping screw that plasthetics assembles, comprise screw head, surperficial threaded screw rod, it is characterized in that: described screw surface screw thread is the double-start thread with footpath various outer diameter of the identical end of identical pitch, described big outer-diameter threads tooth form angle is 30 degree, and little outer-diameter threads tooth form angle is 60 degree.
2. the quick shockproof locking tapping screw that is used for the plasthetics assembling according to claim 1, it is characterized in that the worm tooth on the certain-length of described screw rod end is provided with along three uniform inequilateral retaining grooves of screw thread, the retaining direction of described retaining groove is opposite with the screw thread direction.
3. the quick shockproof locking tapping screw that is used for the plasthetics assembling according to claim 1 and 2 is characterized in that described screw rod end certain-length is the tooth distance of 3-5 the tooth in screw rod end.
4. the quick shockproof locking tapping screw that is used for the plasthetics assembling according to claim 3 is characterized in that the inequilateral retaining groove of a described screw rod end 3-5 Ya Geya is arranged with the screw rod shaft axis is consistent.
5. the quick shockproof locking tapping screw that is used for the plasthetics assembling according to claim 3 is characterized in that inequilateral retaining groove and the angled arrangement of screw rod shaft axis of a described screw rod end 3-5 Ya Geya.
6. the quick shockproof locking tapping screw that is used for the plasthetics assembling according to claim 1 and 2 is characterized in that described screw rod end is the horizontal tail shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202077977U CN201502600U (en) | 2009-08-13 | 2009-08-13 | Fast earthquake and looseness prevention self-tapping screw for assembling plastic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202077977U CN201502600U (en) | 2009-08-13 | 2009-08-13 | Fast earthquake and looseness prevention self-tapping screw for assembling plastic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201502600U true CN201502600U (en) | 2010-06-09 |
Family
ID=42453533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202077977U Expired - Lifetime CN201502600U (en) | 2009-08-13 | 2009-08-13 | Fast earthquake and looseness prevention self-tapping screw for assembling plastic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201502600U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133484A (en) * | 2011-12-01 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Screw with double-layer thread structure |
| CN103128379A (en) * | 2011-12-01 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Preparation technology of screw with double-layer thread structure |
| CN106855076A (en) * | 2017-01-10 | 2017-06-16 | 宝鸡文理学院 | The multi-thread new-type screw thread of compound tooth form |
| CN109099045A (en) * | 2018-10-30 | 2018-12-28 | 浙江斯泰新材料科技股份有限公司 | Locking locking type screw |
-
2009
- 2009-08-13 CN CN2009202077977U patent/CN201502600U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133484A (en) * | 2011-12-01 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Screw with double-layer thread structure |
| CN103128379A (en) * | 2011-12-01 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Preparation technology of screw with double-layer thread structure |
| CN106855076A (en) * | 2017-01-10 | 2017-06-16 | 宝鸡文理学院 | The multi-thread new-type screw thread of compound tooth form |
| CN109099045A (en) * | 2018-10-30 | 2018-12-28 | 浙江斯泰新材料科技股份有限公司 | Locking locking type screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Essence Fastening Systems (Shanghai) Co., Ltd. Assignor: Essence Fastener Industries Co., Ltd. Contract record no.: 2012310000191 Denomination of utility model: Fast earthquake and looseness prevention self-tapping screw for assembling plastic product Granted publication date: 20100609 License type: Exclusive License Record date: 20120926 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100609 |
|
| CX01 | Expiry of patent term |