CN217926706U - Flat-head sharp-tail screw - Google Patents
Flat-head sharp-tail screw Download PDFInfo
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- CN217926706U CN217926706U CN202221210422.8U CN202221210422U CN217926706U CN 217926706 U CN217926706 U CN 217926706U CN 202221210422 U CN202221210422 U CN 202221210422U CN 217926706 U CN217926706 U CN 217926706U
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- arc
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- screw
- thread
- tail screw
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Abstract
The utility model discloses a crew cut pointed tail screw belongs to screw technical field, this crew cut pointed tail screw, including the peaceful head of screw thread portion, screw thread portion includes four arc thread boards and connects the king-rod on flush head surface, four arc thread board annular installation respectively the surface of king-rod, four the arc thread board with all be provided with guider and extrusion device between the king-rod, extrusion device is used for four the arc thread board extrudees to the outside, most advanced is installed to the tip of king-rod. Through setting up four arc thread boards, wrap up the arc thread board on the surface of well pole, extrusion device between arc thread board and the well pole makes the arc thread board in continuous by the extrusion, has formed the extrusion force this moment between arc thread board and the thread groove, and according to the computational formula of frictional force, frictional force between the two also can increase, just can not conveniently twist out after screwing in the screw simultaneously, has improved the fastening.
Description
Technical Field
The utility model belongs to the technical field of the screw, concretely relates to crew cut pointed tail screw.
Background
The flat-head pointed tail screw has the advantages that the threaded end of the flat-head pointed tail screw is pointed and the other end of the flat-head pointed tail screw is planar, when an object is connected by the flat-head pointed tail screw, the flat-head pointed tail screw can be easily screwed into the inside of a connected piece, and meanwhile, the exposed end face of the flat-head pointed tail screw is flat, so that the flat-head pointed tail screw is more convenient to use in certain environments on a desktop. However, the conventional screw has problems that the screw which is screwed in is easily screwed out in the screwing direction, and the screw connection is not fastened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flat head pointed tail screw to propose current flat head pointed tail screw in solving above-mentioned background art in the use, because the screw of screwing in will twist out along the direction that the screw was screwed in very easily, thereby lead to the problem that screwed connection is not fastened.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a crew cut pointed tail screw, includes screw thread portion and flat head portion, screw thread portion includes four arc thread boards and connects the king-rod on flat head portion surface, four arc thread board annular installation respectively is in the surface of king-rod, four arc thread board with all be provided with guider and extrusion device between the king-rod, extrusion device is used for four arc thread board extrudees to the outside, most advanced is installed to the tip of king-rod.
Preferably, the guide device comprises a guide rod, the guide rod is fixedly installed on the inner side of the arc-shaped threaded plate, a guide groove is formed in the surface of the middle rod, and the guide rod is movably installed inside the guide groove.
Preferably, the guide means is installed at both end positions of an inner side of the arc-shaped thread plate.
Preferably, the extrusion device comprises a groove and a spring, the groove is formed in the surface of the middle rod, and two ends of the spring are fixedly installed in the arc-shaped threaded plate and the groove respectively.
Preferably, four of the arc-shaped thread plates form an integral tubular shape, and the inner diameter of the integral tubular shape is the same as the diameter of the middle rod.
Preferably, the radius of the tip is the same as the thickness of the arc-shaped threaded plate and the radius of the middle rod.
Preferably, the surface of the flat head part is provided with a transverse groove.
Preferably, rubber gaskets are arranged between the four arc-shaped thread plates.
Preferably, the rubber gasket has the same shape as the cross section of the arc-shaped thread plate.
Preferably, the rubber gasket is fixed on the surface of the arc-shaped thread plate through glue.
Compared with the prior art, the beneficial effects of the utility model are that:
1. through setting up four arc thread boards, wrap up the arc thread board on the surface of well pole, extrusion device between arc thread board and the well pole makes the arc thread board in continuous by the extrusion, has formed the extrusion force this moment between arc thread board and the thread groove, and according to the computational formula of frictional force, frictional force between the two also can increase, just can not conveniently twist out after screwing in the screw simultaneously, has improved the fastening.
Drawings
FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;
fig. 2 is an enlarged schematic structural view of fig. 1 a according to the present invention;
FIG. 3 is a schematic view of a partial three-dimensional structure of the present invention;
fig. 4 is an enlarged schematic structural diagram of the position B of fig. 3 according to the present invention.
In the figure: 1. a flat head; 2. an arc-shaped thread plate; 3. a middle rod; 4. a guide device; 41. a guide rod; 42. a guide groove; 5. an extrusion device; 51. a groove; 52. a spring; 6. a tip; 7. a transverse groove; 8. a rubber gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a flat head pointed tail screw, includes screw thread portion and flat head portion 1, screw thread portion includes four arc thread boards 2 and connects the king-rod 3 on flat head portion 1 surface, four arc thread board 2 is the annular respectively and installs the surface of king-rod 3, four arc thread board 2 with all be provided with guider 4 and extrusion device 5 between the king-rod 3, extrusion device 5 is used for four arc thread board 2 extrudees to the outside, most advanced 6 is installed to the tip of king-rod 3.
In this embodiment, through setting up four arc threading boards 2, wrap up arc threading board 2 on the surface of well pole 3, extrusion device 5 between arc threading board 2 and the well pole 3 makes arc threading board 2 extruded at continuous, has formed the extrusion force between arc threading board 2 and the thread groove this moment, and according to the computational formula of frictional force, frictional force between the two also can increase, just can not conveniently twist out after screwing in simultaneously.
Specifically, the guide device 4 includes a guide rod 41, the guide rod 41 is fixedly installed on the inner side of the arc-shaped thread plate 2, a guide groove 42 is formed on the surface of the middle rod 3, and the guide rod 41 is movably installed inside the guide groove 42.
In this embodiment, the guide rod 41 moves in the guide groove 42 along the pulling direction of the guide rod 41, so that the position of the arc-shaped thread plate 2 is ensured not to deviate, and the whole screw can be normally screwed into the connected part, and is not easy to dislocate.
Specifically, the guide devices 4 are installed at two end positions of the inner side of the arc-shaped thread plate 2.
In the embodiment, a straight line is determined for two arc points, so that the arc thread plate 2 is ensured not to rotate in the moving process.
Specifically, the extruding device 5 comprises a groove 51 and a spring 52, the groove 51 is formed in the surface of the middle rod 3, and two ends of the spring 52 are fixedly installed in the arc-shaped threaded plate 2 and the groove 51 respectively.
In this embodiment, the pressing by the spring 52 enables the arc-shaped thread plate 2 to be tightly pressed inside the connected member.
Specifically, the four arc-shaped thread plates 2 form an integral tubular shape, and the inner diameter of the integral tubular shape is the same as the diameter of the middle rod 3.
In this embodiment, the screw can be ensured to screw into the interior of the connected member.
Specifically, the radius of the tip 6 is the same as the thickness of the arc-shaped thread plate 2 and the radius of the central rod 3.
In the embodiment, after the surface of the connected piece is extruded and indented by the tip 6, the whole screw can be smoothly installed into the inside of the connected piece.
Specifically, the surface of the flat head part 1 is provided with a transverse groove 7.
In this embodiment, the entire screw is conveniently screwed into the interior of the connected member by means of the transverse slot 7.
Specifically, rubber gaskets 8 are arranged between the four arc-shaped thread plates 2.
In this embodiment, utilize rubber gasket 8 increase leakproofness, prevent that debris from falling into between king-rod 3 and arc thread plate 2 when precession.
Specifically, the shape of the rubber gasket 8 is the same as the cross section of the arc-shaped thread plate 2.
In this embodiment, guarantee that whole screw can normal precession.
Specifically, the rubber gasket 8 is fixed on the surface of the arc-shaped thread plate 2 through glue.
In this embodiment, glue is fixed comparatively firmly, is difficult to drop, and fixed mode is comparatively simple.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A flat-head pointed tail screw comprises a threaded part and a flat head part (1), and is characterized in that: screw thread portion includes four arc thread boards (2) and connects well pole (3), four on flat head portion (1) surface arc thread board (2) are annular respectively and are installed the surface of well pole (3), four arc thread board (2) with all be provided with guider (4) and extrusion device (5) between well pole (3), extrusion device (5) are used for four arc thread board (2) extrude to the outside, most advanced (6) are installed to the tip of well pole (3).
2. The flat-pointed tail screw of claim 1, which is characterized in that: the guide device (4) comprises a guide rod (41), the guide rod (41) is fixedly installed on the inner side of the arc-shaped threaded plate (2), a guide groove (42) is formed in the surface of the middle rod (3), and the guide rod (41) is movably installed inside the guide groove (42).
3. The flat-pointed tail screw of claim 1, which is characterized in that: the guide devices (4) are arranged at two ends of the inner side of the arc-shaped thread plate (2).
4. The flat-pointed tail screw of claim 1, which is characterized in that: the extruding device (5) comprises a groove (51) and a spring (52), the groove (51) is formed in the surface of the middle rod (3), and two ends of the spring (52) are fixedly installed in the arc-shaped threaded plate (2) and the groove (51) respectively.
5. The flat-pointed tail screw of claim 1, which is characterized in that: the four arc-shaped thread plates (2) form an integral tubular shape, and the inner diameter of the integral tubular shape is the same as the diameter of the middle rod (3).
6. The flat-pointed tail screw of claim 1, which is characterized in that: the radius of the tip (6) is the same as the thickness of the arc-shaped thread plate (2) and the radius of the middle rod (3).
7. The flat-pointed tail screw of claim 1, which is characterized in that: the surface of the flat head part (1) is provided with a transverse groove (7).
8. The flat-pointed tail screw of claim 1, which is characterized in that: rubber gaskets (8) are arranged between the four arc-shaped thread plates (2).
9. The flat-pointed tail screw of claim 8, which is characterized in that: the shape of the rubber gasket (8) is the same as the cross section of the arc-shaped thread plate (2).
10. The flat-pointed tail screw of claim 8, which is characterized in that: the rubber gasket (8) is fixed on the surface of the arc-shaped thread plate (2) through glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221210422.8U CN217926706U (en) | 2022-05-12 | 2022-05-12 | Flat-head sharp-tail screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221210422.8U CN217926706U (en) | 2022-05-12 | 2022-05-12 | Flat-head sharp-tail screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217926706U true CN217926706U (en) | 2022-11-29 |
Family
ID=84177190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221210422.8U Active CN217926706U (en) | 2022-05-12 | 2022-05-12 | Flat-head sharp-tail screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217926706U (en) |
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2022
- 2022-05-12 CN CN202221210422.8U patent/CN217926706U/en active Active
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