CN205117932U - Double thread face self tapping screw - Google Patents
Double thread face self tapping screw Download PDFInfo
- Publication number
- CN205117932U CN205117932U CN201520791332.6U CN201520791332U CN205117932U CN 205117932 U CN205117932 U CN 205117932U CN 201520791332 U CN201520791332 U CN 201520791332U CN 205117932 U CN205117932 U CN 205117932U
- Authority
- CN
- China
- Prior art keywords
- thread
- flank
- screw
- face
- self tapping
- 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
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model relates to a double thread face self tapping screw, including nut (10) and screw rod (20), wherein be equipped with the screw thread on screw rod (20), characterized by, the screw comprises first thread face (1), joint face (3), second thread face (2), wherein links to each other through joint face (3) transition between first thread face (1) and second thread face (2), the screw thread angle of first thread face (1) is greater than the screw thread angle of second thread face (2). The utility model discloses on mainly being used in the three proofings cell -phone, can reduce the rotation torque, improve and pull out intensity, reduce a combination ruptured danger by a wide margin to protect the cell -phone better.
Description
Technical field
The utility model relates to a kind of two flank of thread self tapping screw, is mainly used in three anti-mobile phone industries, can reduces rotation torque, improve pull off strength, significantly reduces the danger that assembly parts breaks.
Background technique
In existing technology, known technology is in current mobile phone industry, and assembly parts mainly comprise the nut of machine tooth screw and in-mould injection, and realizes mobile phone assembling by being engaged between screw with nut.But long by the nut molding cycle of in-mould injection, mould and die accuracy requires high, and manufacturing efficiency is low, and first-pass yield is low, makes troubles to production.
Summary of the invention
The utility model overcomes above-mentioned the deficiencies in the prior art, provides that a kind of technique is simple, two flank of thread self tapping screws of manufacturing efficiency.
For achieving the above object, the utility model adopts following technical proposal:
A kind of two flank of thread self tapping screw, comprise nut (10) and screw rod (20), wherein screw rod (20) is provided with screw thread, it is characterized in that, described screw thread is made up of the first flank of thread (1), interface (3), the second flank of thread (2), is wherein connected by interface (3) transition between the first flank of thread (1) and the second flank of thread (2); The thread angle of described first flank of thread (1) is greater than the thread angle of the second flank of thread (2).
The value range of the thread angle of described first flank of thread (1) is 125 ° ~ 135 °; The value range of the thread angle of the second flank of thread (2) is 100 ° ~ 110 °.
The cross section of described screw thread be one trapezoidal.
Described nut (10) end is provided with countersunk head (4), and this countersunk head (4) is interior hexagonal flower shape.
The beneficial effects of the utility model are: during the assembly parts of fastening three anti-mobile phones, improve pull off strength and reduce rotation torque, reducing the danger that assembly parts breaks.And there is the advantage that technique is simple, reliable, manufacturing efficiency is high.
Accompanying drawing explanation
Fig. 1 is the utility model schematic perspective view.
Fig. 2 is the utility model generalized section.
Fig. 3 is nut schematical top view of the present utility model.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below in conjunction with drawings and Examples, this programme is set forth.
The assembling fittings of existing mobile phone industry, comprises the nut of machine tooth screw and in-mould injection, and realizes mobile phone assembling by being engaged between screw with nut, and wherein in-mould injection adds cost of parts, and waterproof conformity is also difficult to whole guarantee.
The utility model adopts two flank of thread self-tapping screw structure form, eliminates in-mould injection, reduces cost of parts, improving production efficiency.
From Fig. 1 composition graphs 2, Fig. 3, two flank of thread self tapping screw, comprise nut (10) and screw rod (20), wherein screw rod (20) is provided with screw thread, it is characterized in that, described screw thread is respectively equipped with the first flank of thread (1), interface (3), the second flank of thread (2), is wherein connected by interface (3) transition between the first flank of thread (1) and the second flank of thread (2); The thread angle of described first flank of thread (1) is greater than the thread angle of the second flank of thread (2).First flank of thread (1) strengthens cutting dynamics and improves pull off strength, and the second flank of thread (2) reduces the danger that rotation torque reduction assembly parts breaks.
During assembling, three anti-machine fastening combined pieces directly locked by two flank of thread self tapping screw.There is the advantage that technique is simple, reliable, manufacturing efficiency is high.
Embodiment of the present utility model just introduces its embodiment, does not lie in and limits its protection domain.The technician of the industry can make some amendment under the inspiration of the present embodiment, therefore all equivalences done according to the utility model the scope of the claims change or modify, and all belong within the scope of the utility model Patent right requirement.
Claims (4)
1. a two flank of thread self tapping screw, comprise nut (10) and screw rod (20), it is characterized in that, described screw rod (20) is provided with screw thread, this screw thread is made up of the first flank of thread (1), interface (3), the second flank of thread (2), is wherein connected by interface (3) transition between the first flank of thread (1) and the second flank of thread (2); The thread angle of described first flank of thread (1) is greater than the thread angle of the second flank of thread (2).
2. the two flank of thread self tapping screw of one according to claim 1, it is characterized in that, the value range of the thread angle of described first flank of thread (1) is 125 ° ~ 135 °; The value range of the thread angle of the second flank of thread (2) is 100 ° ~ 110 °.
3. the two flank of thread self tapping screw of one according to claim 1, is characterized in that, the cross section of described screw thread be one trapezoidal.
4. the two flank of thread self tapping screw of one according to claim 1, it is characterized in that, described nut (10) end is provided with countersunk head (4), and this countersunk head (4) is interior hexagonal flower shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520791332.6U CN205117932U (en) | 2015-10-14 | 2015-10-14 | Double thread face self tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520791332.6U CN205117932U (en) | 2015-10-14 | 2015-10-14 | Double thread face self tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117932U true CN205117932U (en) | 2016-03-30 |
Family
ID=55573547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520791332.6U Expired - Fee Related CN205117932U (en) | 2015-10-14 | 2015-10-14 | Double thread face self tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU221617U1 (en) * | 2023-06-06 | 2023-11-15 | Азамат Валиханович Османов | SELF-TAPPING SCREW |
-
2015
- 2015-10-14 CN CN201520791332.6U patent/CN205117932U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU221617U1 (en) * | 2023-06-06 | 2023-11-15 | Азамат Валиханович Османов | SELF-TAPPING SCREW |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204387070U (en) | Boats and ships backing-up screw | |
| CN204533112U (en) | Suspension and support connects snap close | |
| CN205117932U (en) | Double thread face self tapping screw | |
| CN202914489U (en) | Composite bolt | |
| CN204226401U (en) | A kind of anti-loosening bolt | |
| CN204704248U (en) | A kind of retention device | |
| CN203516375U (en) | Self-tapping anti-disengaging bolt | |
| CN203362779U (en) | Anti-loose pressure riveting screw | |
| CN203051413U (en) | Sealing bolt | |
| CN203161780U (en) | Anti-loosing fastener | |
| CN202251326U (en) | Bolt with gasket | |
| CN203051373U (en) | Sealing type countersunk screw bolt | |
| CN202391905U (en) | Countersunk bolt | |
| CN204357890U (en) | A kind of anti-demounting bolt | |
| CN204226255U (en) | A kind of blower fan flange plate | |
| CN202418179U (en) | Novel bolt | |
| CN204784046U (en) | Buckle structure easy to assemble, as to promote part outward appearance perceptual quality | |
| CN103615459A (en) | Spline connecting rod nut used for engine | |
| CN205013433U (en) | Adopt hydro -cylinder of novel connected mode | |
| CN103573785A (en) | Bolt with convex round head | |
| CN204005191U (en) | Tooth pipe thread pipe fitting in a kind of combined type | |
| CN203441892U (en) | Connecting structure of clamping plate and support | |
| CN202462842U (en) | Co-extrusion nozzle connection device of extrusion moulding co-extrusion die | |
| CN204878395U (en) | Quick assembly disassembly flange for six axis robot | |
| CN209180198U (en) | A kind of splice type bolt |
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: 20160330 Termination date: 20211014 |