CN101498333A - Screw, punching implement and screwdriver head - Google Patents
Screw, punching implement and screwdriver head Download PDFInfo
- Publication number
- CN101498333A CN101498333A CNA2008100047888A CN200810004788A CN101498333A CN 101498333 A CN101498333 A CN 101498333A CN A2008100047888 A CNA2008100047888 A CN A2008100047888A CN 200810004788 A CN200810004788 A CN 200810004788A CN 101498333 A CN101498333 A CN 101498333A
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- CN
- China
- Prior art keywords
- screw
- head
- engagement groove
- groove
- 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.)
- Pending
Links
- 238000004080 punching Methods 0.000 title 1
- 210000002421 cell wall Anatomy 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000000399 orthopedic effect Effects 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 230000012447 hatching Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to a screw which comprises a rod body and a head, the rod body is provided with screw threads, the head is connected with the rod body and comprises a combined groove, the combined groove comprises four arc-shaped grooves and a foursquare groove, and the arc-shaped grooves are symmetrically arranged at the four corners of the combined groove, wherein the arc-shaped grooves are limited by four arcs with equal lengths. Furthermore, the foursquare groove is formed at the center of the arc-shaped grooves, wherein the foursquare groove is limited by four straight lines with equal lengths, and the lengths of the straight lines are shorter than or equal to the distance between both ends of the arcs.
Description
Technical field
The present invention relates to a kind of screw, towards tool and head of screwdriver, more particularly, relate to a kind of screw, this screw can be applicable to different types of head of screwdriver, and the distance at the camber line two ends of the curve bath of this screw is more than or equal to the length of the straight line of four chamfered grooves.
Background technique
At present, existing screw or screw, no matter for tack, spin head, taper head or ring-type are first-class, its engagement groove is nothing more than be yi word pattern A, cross B, four jiaos of cross combination type C, four jiaos of type D or rice font E, and is extremely shown in Figure 5 as Fig. 1.Yet, the hand-operated tools that can cooperate with above-mentioned various engagement groove A, B, C, D, E, its head of screwdriver in conjunction with sword be restricted to have only yi word pattern, cross, four jiaos of cross combination types, four jiaos of types or rice font.Therefore, limited applicability, can't provide the head of screwdriver of existing other patterns to plug, and can't produce the screw that big bolt closes torsion for the variety classes head of screwdriver.
Moreover, the combining sword and must reach combination fast of the engagement groove of this screw and this head of screwdriver, and both in conjunction with after, the degree of waving of this head of screwdriver is limited can not be excessive.If waving of this head of screwdriver spent greatly, then when the big torsion of electric tool moment rotation generation, may damage to this engagement groove or in conjunction with sword.In other words, the bonding tightness that combines sword when this engagement groove with this is not good, produces waving of this head of screwdriver and spends when big, and this will be broken away from from this engagement groove in conjunction with sword.
With reference to figure 6a, U. S. Patent 6402449B1 number, title is " improvement of screw head (ScrewWith An Improved Head) ", it discloses a kind of improved screw head 10, and the notch 12 that wherein can reduce stress is formed on each corner of driving engagement groove 11 of this screw head 10.Those notches are identical arc.This driving engagement groove 11 can utilize one four chamfered groove 13, and it is between four arc-shaped slots 12.
With reference to figure 6b, because the distance L 1 at the camber line two ends of the arc-shaped slot 12 of above-mentioned U. S. Patent 6402449B1 number is less than the straight length L2 of this four chamfered groove 13, so the area of this arc-shaped slot 12 is relatively less.Above-mentioned U. S. Patent has following point: the first, the area of the arc-shaped slot 12 of prior art is less, so the arc-shaped slot 12 of prior art causes consent easily when application.The second, arc-shaped slot 12 areas of prior art less (that is the arc moulding is little), the therefore manufacturing moulding of whole driving engagement groove 11 difficulty so will increase in the manufacture process wearing and tearing towards tool, and then reduce life-span and increase manufacture cost towards tool.
With reference to figure 7, U. S. Patent 6685412B2 number, title is " the multi-clove type torsion that is used in particular for the screw of orthopedics implantation drives engagement groove and head of screwdriver (Multi-lobe Torque DrivingRecess and Tool In Particular For An Orthopedic Implant Screw) thereof ", it discloses a kind of fastening piece 20 (such as screw or nut) and head of screwdriver 30, it is designed for the orthopedics implant system especially, and wherein this fastening piece 20 has multi-clove type torsion driving engagement groove 24.This engagement groove 24 has the centre area, and this centre area is defined by five equidistant half slots 26 that are provided with, and these half slots 26 are isolated by internal projections 25, and this internal projections 25 has two sharpened edges.The front end of this head of screwdriver 30 has corresponding drive portion 32, and this drive portion 32 matches with this engagement groove 24.The purpose of design of this head of screwdriver 30 and this engagement groove 24 is do not wearing and tearing this engagement groove 24 or damage under the situation of drive portion 32 of these head of screwdriver 30 front ends, and reaching can controlled twisting load.
Because 6685412B2 number problem to be solved of above-mentioned U. S. Patent is under the situation of this engagement groove 24 of not wearing and tearing, reaching can controlled twisting load, therefore the drive portion 32 of these head of screwdriver 30 front ends must be complementary fully with this engagement groove 24, to avoid this engagement groove 24 that weares and teares.So just, limit the applicability of variety classes head of screwdriver, and can't provide the head of screwdriver of existing other patterns to plug this engagement groove 24.For example, this engagement groove 24 can not be provided with four chamfered grooves simultaneously, plugs wherein in order to the head of screwdriver that existing four jiaos of sword patterns are provided.In other words, if this engagement groove 24 is provided with four chamfered grooves simultaneously, and provide the head of screwdriver of existing four jiaos of sword patterns to plug wherein, it is not good with the bonding tightness of these four jiaos of swords that this engagement groove 24 then may take place.Therefore, these four jiaos of swords this engagement groove 24 that may wear and tear can't reach the effect that reaching of above-mentioned U. S. Patent can controlled twisting load.
Therefore, just having to provide a kind of screw, and this screw is applicable to different types of head of screwdriver, and the distance at the camber line two ends of the curve bath of this screw engagement groove is greater than the straight length of this four chamfered groove, to solve aforesaid problem.
Summary of the invention
The object of the present invention is to provide a kind of screw, this screw is applicable to different types of head of screwdriver, and the distance at the camber line two ends of the curve bath of this screw is more than or equal to the length of the straight line of this four chamfered groove, so the area of this curve bath is relatively bigger.
In order to achieve the above object, the invention provides a kind of screw, this screw comprises the body of rod and head.This body of rod is provided with screw thread.This head is connected with this body of rod, and comprises engagement groove.This engagement groove comprises four curve baths and one four chamfered groove.These curve baths are arranged at four corners of this engagement groove symmetrically, and wherein these curve baths are defined by the camber line of four equal length.This four chamfered groove is formed at the central authorities of these curve baths, and wherein this four chamfered groove is defined by the straight line of four equal length, and the length of this straight line is not more than the distance at these camber line two ends.
Compare with the engagement groove of prior art, the distance at the camber line two ends of curve bath of the present invention is more than or equal to the length of the straight line of this four chamfered groove, so the area of this curve bath is relatively bigger.The present invention has following advantage: the first, the area of curve bath of the present invention is bigger, and therefore curve bath of the present invention can consent when application.The second, curve bath area of the present invention big (that is the arc moulding is big), therefore the manufacturing moulding of whole engagement groove is easier to, thereby can reduce in the manufacture process wearing and tearing towards tool, and then increases towards life-span of tool and reduce manufacture cost.Three, curve bath area of the present invention is bigger, so the special screwdriver head is bigger with the area that engagement groove is contacted, thereby the interlock effect is preferable.
It is a kind of towards tool that the present invention also provides, and should be used to forge the head of screw of the present invention towards tool.Should comprise blade towards tool, this blade is corresponding with the engagement groove of the head of this screw, and comprises respectively curve bath and corresponding four arcuate blades of four chamfered grooves and four jiaos of swords with this engagement groove.
The present invention also provides a kind of head of screwdriver, this head of screwdriver is in order to drive the head of screw of the present invention, this head of screwdriver comprises in conjunction with sword, this is corresponding with the engagement groove of the head of this screw in conjunction with sword, and comprises respectively four curve baths and one four corresponding four arcuate blades of chamfered groove and four jiaos of swords with this engagement groove.
In order to be illustrated more clearly in above-mentioned and other purposes, feature and advantage of the present invention, hereinafter will be described with reference to the accompanying drawings the specific embodiment of the present invention.
Description of drawings
Fig. 1 is the schematic top view of first kind of screw of prior art;
Fig. 2 is the schematic top view of second kind of screw of prior art;
Fig. 3 is the schematic top view of the third screw of prior art;
Fig. 4 is the schematic top view of the 4th kind of screw of prior art;
Fig. 5 is the schematic top view of the 5th kind of screw of prior art;
Fig. 6 a is the schematic top view of the 6th kind of screw head of prior art;
Fig. 6 b is the schematic top view of engagement groove of the 6th kind of screw head of prior art;
Fig. 7 is the schematic perspective view of the 7th kind of screw of prior art;
Fig. 8 a is the schematic top view of the screw of one embodiment of the present invention;
Fig. 8 b is the generalized section along the hatching line 8b-8b of the screw shown in Fig. 8 a;
Fig. 9 is the schematic top view of engagement groove of the screw head of this mode of execution of the present invention;
Figure 10 is the schematic side view of the screw of this mode of execution of the present invention;
Figure 11 is the part side view that dashes tool of one embodiment of the present invention;
Figure 12 a is the part side view of the head of screwdriver of mode of execution in of the present invention;
Figure 12 b is the sectional drawing along the hatching line 12b-12b of the head of screwdriver shown in Figure 12 a.
Description of reference numerals
10 screw heads, 11 engagement grooves
12 arc-shaped slots, 13 4 chamfered grooves
20 fastening pieces, 24 engagement grooves
25 projections, 26 half slots
30 head of screwdriver, 32 drive portions
100 screws, 102 center lines
112 heads, 114 engagement grooves
120 bodies of rod, 130 screw threads
140 curve baths, 141 4 chamfered grooves
143 central 144 cell walls
145 cell walls, 152 circular arcs
154 camber lines, 162 quadrangles
164 straight lines 200 are towards tool
210 blades, 212 arcuate blades
214 4 jiaos of sword 300 head of screwdriver
310 in conjunction with sword 312 arcuate blades
314 4 jiaos of sword A yi word patterns
Four jiaos of cross combination types of the cross C of B
Four jiaos of type E of D rice font
α angle L1 distance
L2 length
Embodiment
With reference to figure 8a and Fig. 8 b, the screw 100 of one embodiment of the present invention has been described among the figure.This screw 100 comprises the head 112 and the body of rod 120.This body of rod 120 is provided with screw thread 130.This head 112 is connected with this body of rod 120, and comprises engagement groove 114, and this engagement groove 114 is provided with four curve baths 140 and one four chamfered groove 141.These curve baths 140 are arranged at four corners of this engagement groove 114 symmetrically, and this four chamfered groove 141 is formed at the central authorities 143 of these curve baths 140.
With reference to figure 9, in the present embodiment, the circular arc 152 of these curve baths 140 is defined by the camber line 154 of four equal length.In the present embodiment, the circular arc 152 of these curve baths 140 can be equal to or less than 1/2nd circumference.Preferably, the circular arc 152 of these curve baths 140 is 1/2nd circumference, thereby these curve baths 140 that make are easier to make.Similar tetragonal 162 straight lines 164 by four equal length of this four chamfered groove 141 define.The length L 2 of the straight line 164 of this four chamfered groove 141 is not more than the distance L 1 at camber line 154 two ends of these curve baths 140.
With the engagement groove (shown in Fig. 6 b) of prior art, the distance L 1 at camber line 154 two ends of curve bath 140 of the present invention is more than or equal to the length L 2 of the straight line 164 of this four chamfered groove 141, so the area of this curve bath 140 is relatively bigger.The present invention has following advantage: the first, the area of curve bath of the present invention is bigger, and therefore curve bath of the present invention can consent when application.The second, curve bath area of the present invention big (that is the arc moulding is big), therefore the manufacturing of whole engagement groove is shaped and is easier to, thereby can reduce in the manufacture process wearing and tearing towards tool, and then increases towards life-span of tool and reduce manufacture cost.Three, curve bath area of the present invention is bigger, so the special screwdriver head is bigger with the area that engagement groove is contacted, thereby the interlock effect is preferable.In detail, screw of the present invention both can use the special screwdriver head to plug its engagement groove, in order to produce preferable turn-knob effect in sealed process, screw of the present invention also can use the general standard head of screwdriver of four jiaos of types to plug its engagement groove, uses so that screw has the applicability of different head of screwdriver.
With reference to Figure 10, the angle α of the cell wall 144 of this curve bath 140 and the center line 102 of this screw 100 is about between 0 to 5 degree, in order to produce preferable turn-knob effect in sealed process.Moreover the angle of the cell wall 145 of this four chamfered groove 141 and the center line 102 of this screw 100 can be (not shown) between 0 to 5 degree, in order to produce preferable turn-knob effect in sealed process.
With reference to Figure 11, what this figure had illustrated one embodiment of the present invention dashes tool 200.Be somebody's turn to do towards the head 112 of tool 200 in order to forge screw 100 of the present invention, and comprise blade 210, this blade 210 is corresponding with the engagement groove 114 of the head 112 of this screw 100.This blade 210 comprises respectively four curve baths 140 and one four chamfered groove 141 corresponding four arcuate blades 212 and the four jiaos of swords 214 with this engagement groove 114.
With reference to figure 12a and Figure 12 b, the head of screwdriver 300 of one embodiment of the present invention has been described among the figure.The head 112 of this head of screwdriver 300 in order to drive screw 100 of the present invention, and comprise that in conjunction with sword 310 this is in conjunction with the engagement groove 114 of sword 310 corresponding to the head 112 of this screw 100.This comprises respectively four curve baths 140 and one four chamfered groove 141 corresponding four arcuate blades 312 and four jiaos of swords 314 with this engagement groove 114 in conjunction with sword 310.
More than though the present invention is disclosed by embodiment, yet these mode of executions are not in order to limit the present invention, any the technical staff in the technical field of the invention under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes and modification.Therefore protection scope of the present invention should be defined by the scope of appended claim.
Claims (7)
1. screw, this screw comprises:
The body of rod, this body of rod is provided with screw thread; And
Head, this head is connected with the described body of rod, and comprises engagement groove, and this engagement groove comprises:
Four curve baths, these four curve baths are arranged at four corners of this engagement groove symmetrically, and wherein these curve baths are defined by the camber line of four equal length; And
One four chamfered groove, this four chamfered groove is formed at the central authorities of these curve baths, and wherein this four chamfered groove is defined by the straight line of four equal length, and the length of this straight line is not more than the distance at the two ends of this camber line.
2. screw according to claim 1, wherein, each described curve bath has a circular arc, and this circular arc is not more than 1/2nd circumference.
3. screw according to claim 2, wherein, the circular arc of described curve bath is 1/2nd circumference.
4. screw according to claim 1, wherein, described curve bath has cell wall, and the angle of the center line of this cell wall and this screw is between 0 to 5 degree.
5. according to the described screw of claim 1, wherein, described four chamfered grooves have cell wall, and the angle of the center line of this cell wall and this screw is between 0 to 5 degree.
6. one kind towards tool, should should comprise towards tool towards tool in order to forge the head of screw as claimed in claim 1:
Blade, this blade is corresponding with the engagement groove of the head of described screw, and comprises respectively four curve baths and one four corresponding four arcuate blades of chamfered groove and four jiaos of swords with described engagement groove.
7. head of screwdriver, this head of screwdriver is in order to drive the head of screw as claimed in claim 1, and this head of screwdriver comprises:
In conjunction with sword, this is corresponding with the engagement groove of the head of described screw in conjunction with sword, and comprises respectively four curve baths and one four corresponding four arcuate blades of chamfered groove and four jiaos of swords with described engagement groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100047888A CN101498333A (en) | 2008-01-30 | 2008-01-30 | Screw, punching implement and screwdriver head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100047888A CN101498333A (en) | 2008-01-30 | 2008-01-30 | Screw, punching implement and screwdriver head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101498333A true CN101498333A (en) | 2009-08-05 |
Family
ID=40945554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100047888A Pending CN101498333A (en) | 2008-01-30 | 2008-01-30 | Screw, punching implement and screwdriver head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101498333A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007849A (en) * | 2012-12-17 | 2015-10-28 | 德普伊(爱尔兰)有限公司 | Twist-drivable pin assembly |
| CN105757089A (en) * | 2016-05-17 | 2016-07-13 | 王萍 | Car anti-theft bolt |
| CN107427992A (en) * | 2014-12-17 | 2017-12-01 | 研究工程及制造公司 | Groove head fastener and drive combination |
| CN108980175A (en) * | 2017-05-31 | 2018-12-11 | 世享工业股份有限公司 | Screw and corresponding punching tool |
-
2008
- 2008-01-30 CN CNA2008100047888A patent/CN101498333A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007849A (en) * | 2012-12-17 | 2015-10-28 | 德普伊(爱尔兰)有限公司 | Twist-drivable pin assembly |
| US11071574B2 (en) | 2012-12-17 | 2021-07-27 | Depuy Ireland Unlimited Company | Twist-drivable pin assembly |
| CN107427992A (en) * | 2014-12-17 | 2017-12-01 | 研究工程及制造公司 | Groove head fastener and drive combination |
| CN105757089A (en) * | 2016-05-17 | 2016-07-13 | 王萍 | Car anti-theft bolt |
| CN108980175A (en) * | 2017-05-31 | 2018-12-11 | 世享工业股份有限公司 | Screw and corresponding punching tool |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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Open date: 20090805 |