CN205823856U - Anti-loose sunk screw assembly - Google Patents
Anti-loose sunk screw assembly Download PDFInfo
- Publication number
- CN205823856U CN205823856U CN201620615276.5U CN201620615276U CN205823856U CN 205823856 U CN205823856 U CN 205823856U CN 201620615276 U CN201620615276 U CN 201620615276U CN 205823856 U CN205823856 U CN 205823856U
- Authority
- CN
- China
- Prior art keywords
- screw
- loose
- aperture
- short axle
- screwdriver
- 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
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Abstract
This utility model provides a kind of Anti-loose sunk screw assembly, including screw and screwdriver, wherein, the head of described head of screw offers multiple aperture, the bottom of described screwdriver is provided with multiple short axle, the plurality of short axle and the plurality of aperture one_to_one corresponding, and the plurality of short axle is plugged in the plurality of aperture.Anti-loose sunk screw assembly of the present utility model does not damage connected piece counter sink during self possessing anti-loose ability, and use, has great economic worth.
Description
Technical field
This utility model belongs to five metals device arts, is specifically related to a kind of Anti-loose sunk screw assembly.
Background technology
Screw is widely applied in every field as a kind of threaded fastener, and sunk screw is exclusive due to it
Feature (i.e. connected piece surface can add space availability ratio with the installation part of all standing without interfering with screw)
And it is well received.But sunk screw can not install elastic washer additional as common flat head screw easily to carry out locking, in order to
Preventing sunk screw from loosening and increasing fastening force, that is twisted by sunk screw often is tight especially, adds sunk screw head
The normal pressure of the conical surface and the connected piece counter sink conical surface is with increasing friction force, but so too increases the difficulty that screw takes out simultaneously
Degree.Meanwhile, in tightening a period of time terminated and unscrew beginning, the sunk screw conical surface and the connected piece counter sink conical surface are huge
Need under big pressure relative movement, cause the connected piece counter sink conical surface and head of screw conical surface serious wear.Thus it is broken
The protective layer of bad part, causes part start corrosion from screw junction and then spread to whole part, the most even damages whole
Individual part, causes tremendous economic to lose.
Additionally, common sunk screw head has cross recess or flat recess, by Phillips screwdriver or a word screw
Cutter is tightened (being screwed into) and unscrews (back-outing).Rundown process terminates and unscrews in a period of time that process starts, due to screw nose cone
Frictional force between face and the connected piece conical surface and need bigger moment of torsion, screwdriver is not in order to skid off during turning
Screw head, generally requires and axially pushes down head of screw with strength, and screwdriver is the biggest to the pressure of head of screw, skids off during turning
Ability is the least.But screwdriver to the axial compressive force of head of screw increase the most again the head of screw conical surface and the connected piece conical surface it
Between frictional force, add the difficulty tightened and unscrew.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Anti-loose sunk screw assembly, this Anti-loose countersunk head
Screw assembly self does not damage connected piece counter sink during possessing anti-loose ability, and use, has great economic valency
Value.
The technical solution adopted in the utility model is: a kind of Anti-loose sunk screw assembly, including screw and screwdriver, its
In, the head of described head of screw offers multiple aperture, and the bottom of described screwdriver is provided with multiple short axle, the plurality of short axle with
The plurality of aperture one_to_one corresponding, and the plurality of short axle is plugged in the plurality of aperture.
Further, the plurality of aperture is symmetrical and is evenly distributed in the axis of described screw as the center of circle, for diameter
Circle on, the plurality of short axial symmetry and be evenly distributed in the axis of described screwdriver as the center of circle, on the circle of diameter.
Further, the diameter of a circle that the diameter of a circle that described aperture is distributed is distributed slightly larger than described short axle.
Further, the length of described short axle is slightly less than the degree of depth of described aperture.
Further, described aperture and described aperture are respectively provided with chamfering.
Further, the head of described screw is additionally provided with multiple thin seam.
Compared with prior art, the beneficial effects of the utility model are:
1, reduce rundown process and terminate and unscrew in a period of time that process starts, the difficulty that screwdriver turns, the most not
Need to apply the biggest normal pressure to screw and guarantee that screwdriver does not skid off head of screw during turning.Meanwhile, also it is not required to
To unscrew screw by the biggest moment of torsion, because after screwdriver inserts screw, the head of screw conical surface and the connected piece counter sink conical surface
Between normal pressure substantially reduced, then frictional resistance also significantly reduces, will not be to the head of screw conical surface and connected piece
The counter sink conical surface damages, will not the protective layer of injuring part.
2, screw self possesses anti-loose ability, it is not necessary to the elements such as extra increase special elastic packing ring.
3, the cross recess or the flat recess that eliminate the existence of common sunk screw are destroyed turning when and cause screw
The embarrassment can not taken out with screwdriver.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment Anti-loose sunk screw assembly.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Type embodiment is further described.
As Fig. 1 illustrates, this utility model embodiment provides a kind of Anti-loose sunk screw assembly, including screw 1 and screw
Cutter 2.Wherein, the head of screw 1 has multiple aperture 1a.Being provided with multiple short axle 2a bottom screwdriver 2, multiple short axle 2a are with multiple
In aperture 1a one_to_one corresponding, and multiple short axle 2a multiple pin-and-hole 1a of insertion.
In the present embodiment, the head of described screw 1 also offers multiple thin seam 1b.The bar number of multiple thin seam 1b, width and
The degree of depth is dug according to the required mechanical property in concrete application scenario.It is the most that thin seam is dug, and the intensity of screw 1 is the lowest, but
Elasticity is the best.But if during the fixing part of to aeroelastic requirements higher relatively low to requirement of strength that be cover plate etc of screw 1, then
Thin seam can be opened more.If what screw connected is the block class part that requirement of strength is higher, then should open thin seam less, retain screw strong
Degree.
In the present embodiment, the plurality of aperture 1a is symmetrical and is evenly distributed on the axis of screw 1 as the center of circle, and a is straight
On the circle in footpath, correspondingly, multiple short axle 2a are symmetrical, be evenly distributed on the axis of screwdriver 2 as the center of circle, and b is on the circle of diameter,
The length of the short axle 2a degree of depth less than described aperture 1a.Aperture 1a and short axle 2a is equipped with chamfering, and described aperture 1a is distributed
The diameter of a circle b that is distributed more than short axle 2a of diameter of a circle a.
It should be noted that the material of the screw 1 manufactured in this utility model Anti-loose sunk screw assembly includes manufacturing
All metals required for screw and non-metallic material, the material of screwdriver 2 includes manufacturing all metals required for screwdriver
And non-metallic material.
It should be noted that carefully seam 1b and aperture 2a has following relation: if carefully seam quantity 1, aperture is then 2；
Thin seam is 3, and aperture is 3；Thin seam is 4, and aperture is 4.Head of screw is the least, the diameter of aperture is the least and the degree of depth more
Shallow, aperture can not break-through head of screw.
Work process and the principle of this utility model Anti-loose sunk screw assembly be:
Rundown process: first its short axle 2a is inserted in the aperture 1a of screw 1 by screwdriver 2, makes the contraction of screw 1 and straight
Footpath diminishes.Screw 1 is screwed in the screwed hole of another connected piece 4 through the counter sink of connected piece 3, until screw 1 tension.
Now, the head conical surface of screw 1 just contacts with the counter sink conical surface of connected piece 3 or produces less pressure.Extract screwdriver
2, screw head 1 tightly pushes down the counter sink conical surface under the effect recovering elastic force, to 1 one elastic pre-stress of screw, plays
Locking effect；Unscrewing process: in like manner, first its short axle 2a is inserted in the aperture 1a of screw 1 by screwdriver 2, makes the head of screw 1
Portion shrinks and diameter diminishes.Now, the head conical surface of screw 1 separate with the counter sink conical surface of connected piece 3 or mutually it
Between pressure be greatly reduced, ease rotation screwdriver 2 just can be back-outed screw 1a.
Compared with prior art, the beneficial effects of the utility model are:
1, this utility model Anti-loose sunk screw assembly reduces rundown process and terminates and unscrew that process starts one section
In time, the difficulty that screwdriver 2 turns, i.e. need not apply the biggest normal pressure to guarantee that screwdriver 2 is turning to screw 1
During do not skid off head of screw.Simultaneously, it is not required that the biggest moment of torsion unscrews screw, because inserting screw 1 at screwdriver 2
After, the normal pressure between nose cone face and the counter sink conical surface of connected piece 3 of screw 1 has substantially reduced, then frictional resistance
Also significantly reduce, the counter sink conical surface of the head conical surface of screw 1 and connected piece 3 will not be damaged, zero will not be damaged
The protective layer of part.
2, the screw 1 in this utility model Anti-loose sunk screw assembly self possesses anti-loose ability, it is not necessary to additionally increase
Add the elements such as special elastic packing ring.
3, this utility model Anti-loose sunk screw assembly eliminates cross recess or the flat recess that common sunk screw exists
The embarrassment being destroyed turning when and cause screw can not take out with screwdriver.
These are only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every profit
The equivalent structure made by this utility model description and accompanying drawing content or equivalence flow process conversion, or directly or indirectly it is used in it
The technical field that he is correlated with, is the most in like manner included in scope of patent protection of the present utility model.
Claims (6)
1. an Anti-loose sunk screw assembly, it is characterised in that: include screw (1) and screwdriver (2), wherein, described screw
(1) head offers multiple aperture (1a), and the bottom of described screwdriver (2) is provided with multiple short axle (2a), the plurality of short axle
(2a) with the plurality of aperture (1a) one_to_one corresponding, and the plurality of short axle (2a) is plugged in the plurality of aperture (1a).
Anti-loose sunk screw assembly the most according to claim 1, it is characterised in that: the plurality of aperture (1a) symmetrical and
Being evenly distributed in the axis with described screw (1) as the center of circle, a is on the circle of diameter, and the plurality of short axle (2a) is symmetrical and all
Being distributed in the axis with described screwdriver (2) as the center of circle, b is on the circle of diameter evenly.
Anti-loose sunk screw assembly the most according to claim 1, it is characterised in that: the circle that described aperture (1a) is distributed
The diameter of a circle b that is distributed slightly larger than described short axle (2a) of diameter a.
Anti-loose sunk screw assembly the most according to claim 1, it is characterised in that: the length of described short axle (2a) is smaller
The degree of depth in described aperture (1a).
Anti-loose sunk screw assembly the most according to claim 3, it is characterised in that: described aperture (1a) and described short axle
(2a) it is respectively provided with chamfering.
Anti-loose sunk screw assembly the most according to claim 1, it is characterised in that: the head of described screw (1) also sets
There is multiple thin seam (1b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615276.5U CN205823856U (en) | 2016-06-20 | 2016-06-20 | Anti-loose sunk screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615276.5U CN205823856U (en) | 2016-06-20 | 2016-06-20 | Anti-loose sunk screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823856U true CN205823856U (en) | 2016-12-21 |
Family
ID=58145639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620615276.5U Expired - Fee Related CN205823856U (en) | 2016-06-20 | 2016-06-20 | Anti-loose sunk screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909644A (en) * | 2016-06-20 | 2016-08-31 | 屠雪祥 | Anti-loosing countersunk head screw assembly |
-
2016
- 2016-06-20 CN CN201620615276.5U patent/CN205823856U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909644A (en) * | 2016-06-20 | 2016-08-31 | 屠雪祥 | Anti-loosing countersunk head screw assembly |
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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 |
Granted publication date: 20161221 Termination date: 20170620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |