CN208397092U - A kind of screw - Google Patents
A kind of screw Download PDFInfo
- Publication number
- CN208397092U CN208397092U CN201721857531.8U CN201721857531U CN208397092U CN 208397092 U CN208397092 U CN 208397092U CN 201721857531 U CN201721857531 U CN 201721857531U CN 208397092 U CN208397092 U CN 208397092U
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- Prior art keywords
- screw
- shank
- tapping
- screw thread
- thread
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Abstract
The utility model discloses a kind of screw, including head of screw and shank of screw, tapping screw thread is provided on shank of screw, tapping screw thread is circular triangle along the end surface shape of shank of screw axis direction；Circular triangle is set by the end surface shape of tapping screw thread, when screw is shot in the objects such as timber or fiberboard by tip and tapping screw thread, the depth of thread of its tapping is deeper, tapping screw thread is bigger to the extruding force of timber or fiberboard, so that screw is not easy loose or dislocation, and tapping screw thread has certain self-locking property, has better anti-loosing effect.
Description
Technical field
The utility model relates to technical field of fastening, more particularly to a kind of screw.
Background technique
Screw is a kind of common fastener, is widely used on mechanical, electric appliance and building.
Current screw is generally made of shank of screw, head of screw, and one end of shank of screw is tip, is provided with self tapping spiral shell on bar
Line.In use, rotary squeezing screw, makes it through tip and tapping screw thread shoots part to be tightened, but shoot object in screw
Afterwards, due to there is no self-locking property, the easy loose or dislocation of screw.
Therefore how to solve the problems, such as that screw does not have self-locking property, easy loose or dislocation, be that those skilled in the art need at present
Technical problems to be solved.
Utility model content
The purpose of the utility model is to provide a kind of screws, and structure is simple, have self-locking property, and when use is not easy to loosen
It falls off.
In order to solve the above technical problems, the utility model provides a kind of screw, including head of screw and shank of screw, the screw
Tapping screw thread is provided on bar, the tapping screw thread is circular triangle along the section outer profile of the shank of screw radial direction.
Preferably, the circumscribed circle diameter of the circular triangle is 1.05 to 1.2 times of the screw nominal diameter.
Preferably, the adjacent edge arc-shaped transition of the circular triangle.
Preferably, the shank of screw is circular triangle along the cross sectional shape of its axis direction.
Preferably, the shank of screw is equipped with locking screw, the rotation direction of the locking screw close to one end of the head of screw
It is oppositely oriented with the tapping screw thread.
Preferably, the end of the shank of screw is cone point, the position of the close cone point on the shank of screw
Equipped with stern notch is cut, the stern notch of cutting is along the axially extending of the shank of screw.
Screw provided by the utility model, including head of screw and shank of screw are provided with tapping screw thread, self tapping spiral shell on shank of screw
Line is circular triangle along the end surface shape of shank of screw axis direction；Circular arc triangle is set by the end surface shape of tapping screw thread
Shape, when screw is shot in the objects such as timber or fiberboard by tip and tapping screw thread, the depth of thread of institute's tapping is deeper,
Tapping screw thread is bigger to the extruding force of timber or fiberboard, so that screw is not easy loose or dislocation, and tapping screw thread has centainly
Self-locking property has better anti-loosing effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of screw provided by the utility model；
Fig. 2 is the sectional view along A-A of Fig. 1.
Specific embodiment
The core of the utility model is to provide a kind of screw, and structure is simple, has self-locking property, and when use is not easy to loosen
It falls off.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is that a kind of structure of specific embodiment of screw provided by the utility model is shown
It is intended to；Fig. 2 is the sectional view along A-A of Fig. 1.
The screw that specific embodiment of the present invention provides, including head of screw 11 and shank of screw 12, wherein shank of screw 12
On be provided with tapping screw thread 13, tapping screw thread 13 is preferably circular triangle along the radial section outer profile of shank of screw 12.
Circular triangle is set along the radial section outer profile of shank of screw 12 by tapping screw thread 13, when screw passes through tip
When shooting in the objects such as timber or fiberboard with tapping screw thread 13, relative to the plain screw of same nominal diameter, institute's tapping
The depth of thread it is deeper, tapping screw thread 13 is bigger to the extruding force of timber or fiberboard, so that screw is not easy loose or dislocation, separately
Outside, the pressure of high spot is larger on tapping screw thread 13, which can be caught in object, so that screw be made to have certain self-locking performance
Can, there is better anti-loosing effect.
Wherein it should be noted that tapping screw thread 13 along the radial section outer profile of shank of screw 12 is circular triangle, refer to
Be every circle screw thread of tapping screw thread 13 along the radial section outer profile of shank of screw 12 be circular triangle.
Further, the screw that specific embodiment of the present invention provides, the circumscribed circle diameter of circular triangle can be with
It is 1.05 to 1.2 times of screw nominal diameter, is specifically as follows 1.1 times of screw nominal diameter.Certainly, the end of tapping screw thread 13
Face size is not limited to this, and can be adjusted according to the actual situation, as long as can guarantee the anti-loosening locking function of screw, is existed
Within the protection scope of the utility model.
Further, the screw that specific embodiment of the present invention provides, the end surface shape of tapping screw thread 13 can be
The circular triangle of adjacent edge arc-shaped transition, can reduce screw using when shoot resistance, make screw is easier to shoot wood
In the objects such as material or fiberboard, using more convenient.
On the basis of above-mentioned each specific embodiment, the screw that specific embodiment of the present invention provides, shank of screw
12 cross sectional shape may be circular triangle, can further increase the self-lock ability of screw, improve the locking effect of screw
Fruit.
On the basis of above-mentioned each specific embodiment, the screw that specific embodiment of the present invention provides, in screw
Bar 12 is also provided with locking screw 15, and the rotation of the rotation direction of locking screw 15 and tapping screw thread 13 close to one end of head of screw 11
To opposite；In use, screw may be implemented close to the self-locking of 11 side of head of screw by locking screw 15, screw can be prevented loose
It is dynamic.It is of course also possible to be not provided with locking screw 15, also it is within the protection scope of the utility model.
On the basis of above-mentioned each specific embodiment, the screw that specific embodiment of the present invention provides, shank of screw
12 end can be cone point, and can be equipped on shank of screw 12 close to the position of cone point and cut stern notch 14, cut tail
Slot 14 is axially extending along shank of screw 12；When screw is shot in the objects such as timber or fiberboard, the edge for cutting stern notch 14 can be with
Timber or fiber around cutting tip, some Integrated Chips that can not be discharged can be retained by cutting in stern notch 14, reduce Integrated Chip for spiral shell
The resistance of nail enables screw is easier to shoot in the objects such as timber or fiberboard, using more convenient.
Screw provided by the utility model is described in detail above.Specific case used herein is to this reality
It is expounded with novel principle and embodiment, the above embodiments are only used to help understand the utility model
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the utility model
Under the premise of principle, several improvements and modifications can be made to this utility model, these improvement and modification also fall into practical
In novel scope of protection of the claims.
Claims (5)
1. a kind of screw, including head of screw (11) and shank of screw (12), tapping screw thread (13) are provided on the shank of screw (12),
It is characterized in that, the tapping screw thread (13) is circular triangle along the section outer profile of the shank of screw (12) radial direction；It is described
Shank of screw (12) close to the head of screw one end be equipped with locking screw (15), the rotation direction of the locking screw (15) and it is described from
Tapping (13) it is oppositely oriented.
2. screw according to claim 1, which is characterized in that the circumscribed circle diameter of the circular triangle is the screw
1.05 to 1.2 times of nominal diameter.
3. screw according to claim 2, which is characterized in that the adjacent edge arc-shaped transition of the circular triangle.
4. screw according to claim 1, which is characterized in that cross sectional shape of the shank of screw (12) along its axis direction
For circular triangle.
5. screw according to claim 1, which is characterized in that the end of the shank of screw (12) is cone point, described
It is equipped with and cuts stern notch (14) close to the position of the cone point on shank of screw (12), the stern notch (14) of cutting is along the shank of screw
(12) axially extending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857531.8U CN208397092U (en) | 2017-12-26 | 2017-12-26 | A kind of screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857531.8U CN208397092U (en) | 2017-12-26 | 2017-12-26 | A kind of screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208397092U true CN208397092U (en) | 2019-01-18 |
Family
ID=65066735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721857531.8U Active CN208397092U (en) | 2017-12-26 | 2017-12-26 | A kind of screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208397092U (en) |
-
2017
- 2017-12-26 CN CN201721857531.8U patent/CN208397092U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |