CN202251319U - Screw with multiple threads - Google Patents
Screw with multiple threads Download PDFInfo
- Publication number
- CN202251319U CN202251319U CN2011203387874U CN201120338787U CN202251319U CN 202251319 U CN202251319 U CN 202251319U CN 2011203387874 U CN2011203387874 U CN 2011203387874U CN 201120338787 U CN201120338787 U CN 201120338787U CN 202251319 U CN202251319 U CN 202251319U
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- screw
- thread
- threads
- nut
- utility
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Abstract
The utility model relates to the technical field of screws, in particular to a screw with multiple threads. The screw comprises a threaded stud and a screw cap arranged at one end of the threaded stud, wherein two to six threads are distributed on the outer surface of the threaded stud at equal intervals along the axial direction. Lead angles of the multiple threads of the screw are larger, the friction force formed by the engagement of the screw and a nut is smaller, the screw is easy to slide, and the rapid engagement of the screw can be realized, so the engagement time of the multiple threads is much shorter than that of single threads under the condition of the same pitch, length and diameter; sections of the threads are trapezoidal; the manufacturability is high; and the strength of tooth roots of the screw is high.
Description
Technical field:
The utility model relates to the screw technical field, relates in particular to a kind of multi start thread screw.
Background technique:
Screw is the instrument of fastening implements parts, and screw is an industrial necessity indispensable in the daily life: like the minimum screw of uses such as photographic camera, glasses, clock and watch, electronics; Screw as one of TV, electric product, musical instrument, furniture etc.; Then use large-scale screw, nut as for engineering, building, bridge; Traffic utensil, aircraft, electric car, automobile etc. then are big primary screw and use.Existing screw generally all is the single thread structure, and single thread is because its lead angle is less, and the frictional force that screw and nut screw formation is bigger, and the time that screws is long, and the speed that screws is slow.
The model utility content:
The purpose of the utility model is exactly to provide a kind of to the deficiency of existing technology existence can screw, screw short multi start thread screw of time fast.
To achieve these goals, the technological scheme of the utility model employing is:
The multi start thread screw includes screw column, is arranged on the nut of screw column one end, 2～6 screw threads that have been equally spaced vertically on the outer surface of screw column, and the sectional shape of screw thread is trapezoidal.
The screw thread of said screw column outer surface is preferably 4.
Pitch between adjacent two screw threads is 2.5mm, and the helical pitch of screw thread is 10mm.
In the trapezoid cross section of screw thread, be 75 degree towards a side of nut and the angle of bottom, the angle of another side of nut and bottom is 45 degree dorsad.
Said nut is provided with T type round platform.
The utility model beneficial effect is: the utility model includes screw column, is arranged on the nut of screw column one end, 2～6 screw threads that have been equally spaced vertically on the outer surface of screw column, and its lead angle of the multi start thread of the utility model is bigger; It is less that screw and nut screw the frictional force of formation; Slide easily, can realize that screw thread screws fast, under the situation of same pitch, length, diameter; To screw the time a lot of less for the time ratio single thread that screws of multi start thread; The sectional shape of screw thread is trapezoidal, good manufacturability, and thread root intensity is high.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the partial cutaway diagrammatic sketch of the utility model screw column.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described, sees shown in Fig. 1～2, the multi start thread screw, it includes screw column 1, is arranged on the nut 2 of screw column 1 one ends, and 4 screw threads 3 vertically have been equally spaced on the outer surface of screw column 1.Pitch between adjacent two screw threads 3 is 2.5mm, and the helical pitch of screw thread 3 is 10mm.
The sectional shape of screw thread 3 is trapezoidal, good manufacturability, and thread root intensity is high.In the trapezoid cross section of screw thread 3, be 75 degree towards a side of nut 2 and the angle of bottom, the angle of another side of nut 2 and bottom is 45 degree dorsad.Nut 2 is provided with T type round platform 4, is convenient to screw and screws operation.
Its screw thread 3 lift angles of the multi start thread of the utility model are bigger; It is less that screw and nut screw the frictional force of formation, slides easily, can realize that screw thread 3 screws fast; Under the situation of same pitch, length, diameter; To screw the time a lot of less for the time ratio single thread 3 that screws of multi start thread, and the utility model can be used for transferring power and motion, for example be used to raise the wheel maintenance jack, be used for clamping work pieces and carry out the bench vice of pincers worker processing and be used for machining screw 3 lathe screw mandrels etc.
Certainly, the above only is the preferred embodiment of the utility model, so all equivalences of doing according to the described structure of the utility model patent claim, characteristic and principle change or modify, includes in the utility model patent claim.
Claims (5)
1. multi start thread screw includes screw column (1), is arranged on the nut (2) of screw column (1) one end, and it is characterized in that: 2～6 screw threads (3) that have been equally spaced vertically on the outer surface of said screw column (1), the sectional shape of screw thread (3) is trapezoidal.
2. multi start thread screw according to claim 1 is characterized in that: the screw thread (3) of said screw column (1) outer surface is 4.
3. multi start thread screw according to claim 2 is characterized in that: the pitch between adjacent two screw threads (3) is 2.5mm, and the helical pitch of screw thread (3) is 10mm.
4. multi start thread screw according to claim 1 is characterized in that: in the trapezoid cross section of screw thread (3), be 75 degree towards a side of nut (2) and the angle of bottom, the angle of another side of nut (2) and bottom is 45 degree dorsad.
5. according to any described multi start thread screw of claim 1-4, it is characterized in that: said nut (2) is provided with T type round platform (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203387874U CN202251319U (en) | 2011-09-05 | 2011-09-05 | Screw with multiple threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203387874U CN202251319U (en) | 2011-09-05 | 2011-09-05 | Screw with multiple threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251319U true CN202251319U (en) | 2012-05-30 |
Family
ID=46112568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203387874U Expired - Fee Related CN202251319U (en) | 2011-09-05 | 2011-09-05 | Screw with multiple threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564993A (en) * | 2015-01-19 | 2015-04-29 | 深圳市欣天科技股份有限公司 | Fastening screw self-locking force design method |
-
2011
- 2011-09-05 CN CN2011203387874U patent/CN202251319U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564993A (en) * | 2015-01-19 | 2015-04-29 | 深圳市欣天科技股份有限公司 | Fastening screw self-locking force design method |
| CN104564993B (en) * | 2015-01-19 | 2017-02-01 | 深圳市欣天科技股份有限公司 | Fastening screw self-locking force design method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20180905 |