CN201687825U - Self-drilling screw - Google Patents
Self-drilling screw Download PDFInfo
- Publication number
- CN201687825U CN201687825U CN2010202111580U CN201020211158U CN201687825U CN 201687825 U CN201687825 U CN 201687825U CN 2010202111580 U CN2010202111580 U CN 2010202111580U CN 201020211158 U CN201020211158 U CN 201020211158U CN 201687825 U CN201687825 U CN 201687825U
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- cutting portion
- utility
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- cutting
- self
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Abstract
The utility model discloses a self-drilling screw, which comprises a head, a rod and a cutting portion. One end of the rod is connected with the head while the other end is connected with the cutting portion, threads surround on the outer surface of the rod, the cutting portion comprises a conical edge and a cutting surface, the conical edge is disposed at the tail end of the cutting portion, the edge of the cutting surface extends towards the direction of the threads, and two sides of a connection portion of the cutting portion and the rod are further provided with fins. The self-drilling screw is easy to discharge chips, faster in drilling and more convenient in use.
Description
Technical field
The utility model relates to a kind of SELF DRILLING SCREWS.
Background technique
SELF DRILLING SCREWS is a kind of screw that is used for connecting metal, aluminium, stainless steel etc., is widely used in the connection between the sheet metals such as stainless steel, metal foil, galvanized steel plain sheet.The surface hardness of SELF DRILLING SCREWS and wherein centre hardness is than general self tapping screw height, SELF DRILLING SCREWS is collection, be tightened in the screw of one-stop operation.SELF DRILLING SCREWS mainly comprises: head, bar portion and cutting portion, wherein cutting portion is the key position of realizing boring, attacking function, the cutting portion of existing SELF DRILLING SCREWS is generally bladed, the rotation of the cutting portion of bladed is holed to the parts of drilled tail during work, make thread engagement in the components interior of drilled tail again, the defective of its existence is: the chip that produces in the process of boring is difficult for discharging, and makes that the sharpness of cutting portion is more and more littler, also reduced the speed of boring, used very inconvenient.
The model utility content
The purpose of this utility model provides a kind of SELF DRILLING SCREWS, discharges chip easily, and boring is used more convenient than faster.
For achieving the above object, the technical solution of the utility model is:
A kind of SELF DRILLING SCREWS comprises head, bar portion and cutting portion, and an end of bar portion links to each other with head, and the other end links to each other with cutting portion, around screw thread is arranged, it is characterized in that on the outer surface of bar portion:
Described cutting portion comprises the blade that is arranged at terminal taper and blade towards the cutting face that hand of spiral extends, and the both sides of described cutting portion and bar portion joint also are provided with fin.
Preferably, fin described in the utility model is triangular in shape.
Therefore compared with prior art, the utility model has following beneficial effect:
Fin in the utility model makes the chip that produces in the boring procedure can pass through its smooth discharge, the sharpness of cutting portion can not be subjected to debris influence like this, penetration rate is than very fast, and fin can be severed before screw thread locks in drilled hole parts, and is very easy to use.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute to improper qualification of the present utility model, in the accompanying drawings:
Fig. 1 is the utility model embodiment's a structural representation.
Embodiment
Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.
Be illustrated in figure 1 as the embodiment of a kind of SELF DRILLING SCREWS described in the utility model, comprise head 1, bar portion 2 and cutting portion 3, one end of bar portion 2 links to each other with head 1, the other end links to each other with cutting portion 3, center on the outer surface of bar portion 2 screw thread 4 is arranged, cutting portion 3 comprises the blade 31 that is arranged at terminal taper and blade 31 towards the cutting face 32 that hand of spiral extends, and cutting portion 3 also is provided with fin 5 with the both sides of the joint of bar portion 2.
The chip that fin 5 makes in boring procedure and produced can pass through its smooth discharge, the sharpness of cutting portion 3 can not be subjected to debris influence like this, penetration rate is than very fast, and fin 5 can be severed by the boring parts before screw thread 4 locks in by the boring parts, and is very easy to use.
In the present embodiment, fin 5 is triangular in shape, so in use fin 5 easier being severed.
More than technological scheme that the utility model embodiment is provided be described in detail, used specific case herein the utility model embodiment's principle and mode of execution are set forth, above embodiment's explanation only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and application area, all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (2)
1. a SELF DRILLING SCREWS comprises head, bar portion and cutting portion, and an end of bar portion links to each other with head, and the other end links to each other with cutting portion, around screw thread is arranged, it is characterized in that on the outer surface of bar portion:
Described cutting portion comprises the blade that is arranged at terminal taper and blade towards the cutting face that hand of spiral extends, and the both sides of described cutting portion and bar portion joint also are provided with fin.
2. SELF DRILLING SCREWS according to claim 1 is characterized in that: described fin is triangular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202111580U CN201687825U (en) | 2010-06-01 | 2010-06-01 | Self-drilling screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202111580U CN201687825U (en) | 2010-06-01 | 2010-06-01 | Self-drilling screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687825U true CN201687825U (en) | 2010-12-29 |
Family
ID=43376107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202111580U Expired - Lifetime CN201687825U (en) | 2010-06-01 | 2010-06-01 | Self-drilling screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780027A (en) * | 2017-11-13 | 2019-05-21 | 春雨工厂股份有限公司 | Wing drilling tail self-tapping screw |
| CN110259793A (en) * | 2019-06-17 | 2019-09-20 | 湖北登峰高强螺栓有限公司 | A kind of self-tapping self-locking bolt |
-
2010
- 2010-06-01 CN CN2010202111580U patent/CN201687825U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780027A (en) * | 2017-11-13 | 2019-05-21 | 春雨工厂股份有限公司 | Wing drilling tail self-tapping screw |
| CN110259793A (en) * | 2019-06-17 | 2019-09-20 | 湖北登峰高强螺栓有限公司 | A kind of self-tapping self-locking bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |
|
| CX01 | Expiry of patent term |