CN206190684U - Back taper head screw - Google Patents
Back taper head screw Download PDFInfo
- Publication number
- CN206190684U CN206190684U CN201621179018.3U CN201621179018U CN206190684U CN 206190684 U CN206190684 U CN 206190684U CN 201621179018 U CN201621179018 U CN 201621179018U CN 206190684 U CN206190684 U CN 206190684U
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- CN
- China
- Prior art keywords
- head
- groove
- torsion
- screw
- utility
- 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
The utility model relates to a back taper head screw, including head and threaded rod portion, the head has the toper section, toper section minor diameter end with threaded rod portion connects, it has the torsion groove to open on the head major diameter terminal surface, the torsion groove include the cuboid recess and connect respectively the two minor faces end of cuboid recess and to the slot that head external diameter direction is extended, a long limit end of cuboid recess is equipped with the arc wall of outside expansion. The utility model discloses utilize the structure of screw own, make the screwdriver apply the area increase of moment of torsion on the torsion groove to form the moment function of an arm of force, the easy power of going up that makes when twisting, locking screw easily, and outside preventing screwdriver roll -off groove, thereby the fracture broken ends of fractured bone is fixed effectual.
Description
Technical field
The utility model is related to a kind of screw, and in particular to a kind of cone-head screw, belongs to orthopaedics technical field of fastening.
Background technology
Current screw is the notch of in-line groove by one point of two halves of the head of a nail, if notch is shallower or screwdriver and spiral shell during operation
The occlusion of head of a nail groove is not tight, or without enough pressure, screwdriver is easy to skid, and is also easy to damage notch.Now this
Plant screw and use little.Cross groove mouthful is better than in-line notch, and screwdriver is difficult to slide, and is adapted to deep part operation,
But the combination of screwdriver and cross recess is tighter when using, enough power is filled up, otherwise screwdriver can be slided or even de- in groove walls again
Fall, when larger revolving force is needed, notch is easily damaged.Interior hexagonal groove mouth is more common in general clinically using relatively broad
Logical screw and pressurization nail-plate screw.Weak point is that the angle of screwdriver easily weares and teares, it is especially desirable to when revolving force is larger, screwdriver
Head can deform, or even close to circle, thus also just lose the effect of bottle opener.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that prior art is present, there is provided a kind of power and not easy to wear of easily making
With the cone-head screw that falls for skidding.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of cone-head screw, including head and spiral shell
Rasp bar portion, the head has conical section；The conical section minor axis end is connected with the thread rod part；At the head major diameter end
Torsion groove is provided with face；The torsion groove includes cuboid groove and is connected to two short ends of cuboid groove and to institute
State the slot of head outer diameter direction extension；The deep-slotted chip breaker for expanding outwardly is provided with a side end long of the cuboid groove.
Preferably, the slot depth is 2-5mm.
Preferably, straight length is at least the half on the cuboid groove side long in the deep-slotted chip breaker.
The deep-slotted chip breaker is with the cuboid groove junction for tangent line is connected.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：
A kind of cone-head screw of the present utility model, using this body structure of screw, makes screwdriver apply moment of torsion on torsion groove
Area increase, and form the torque function of an arm of force, power is easily made when stubborn, can lock-screw easily, and prevent screwdriver from sliding
Go out outside groove, so that fracture site good fixing effect.
Brief description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：
Accompanying drawing 1 is a kind of structural representation of cone-head screw of the present utility model；
Accompanying drawing 2 is a kind of structural representation of upper surface of falling cone-head screw of the present utility model；
Wherein：1- heads；2- thread rod parts；3- cuboid grooves；4- slots；5- deep-slotted chip breakers；6- straight lines.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
As shown in accompanying drawing 1,2, a kind of cone-head screw described in the utility model, including head 1 and thread rod part 2, institute
Head 1 is stated with conical section；The conical section minor axis end is connected with thread rod part 2；Torsion is provided with the major diameter end face of head 1
Groove；The torsion groove include cuboid groove 3 and be connected to two short ends of cuboid groove 3 and to the head 1 outside
Footpath direction extend slot 4, the depth of slot 4 be 2.5mm, slot 4 be mainly designed to when screwdriver or bottle opener insertion allow to by
Gas discharge, makes its smooth insertion in the cuboid groove 3 of closing.
As shown in Figure 2, the side end long in cuboid groove 1 is provided with the deep-slotted chip breaker 5 for expanding outwardly.It is straight in deep-slotted chip breaker 5
The half and deep-slotted chip breaker 5 that line length is at least cuboid groove side long are connected with cuboid groove 3 using straight line 6, the straight line 6 one
End is tangent with deep-slotted chip breaker 5.
The utility model is increased by the structure design to torsion groove, the area for making screwdriver apply moment of torsion on torsion groove,
And form the torque function of an arm of force, power is easily made when stubborn, can lock-screw easily, and prevent screwdriver from slipping out of the slot so that
Fracture site good fixing effect.
The above is only concrete application example of the present utility model, any limit is not constituted to protection domain of the present utility model
System.All use equivalents or equivalence replacement and the technical scheme that is formed, all fall within the utility model rights protection scope it
It is interior.
Claims (4)
1. it is a kind of fall cone-head screw, including head and thread rod part, it is characterised in that：The head has conical section；The cone
Shape section minor axis end is connected with the thread rod part；Torsion groove is provided with the head major diameter end face；The torsion groove includes length
The slot that cube groove extends with two short ends for being connected to cuboid groove and to the head outer diameter direction；Described
One side end long of cuboid groove is provided with the deep-slotted chip breaker for expanding outwardly.
2. it is according to claim 1 fall cone-head screw, it is characterised in that：The slot depth is 2-5mm.
3. it is according to claim 1 fall cone-head screw, it is characterised in that：Straight length is described rectangular in the deep-slotted chip breaker
The half on body groove side long.
4. according to Claims 2 or 3 fall cone-head screw, it is characterised in that：The deep-slotted chip breaker and the cuboid groove
Junction connects for tangent line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179018.3U CN206190684U (en) | 2016-10-27 | 2016-10-27 | Back taper head screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179018.3U CN206190684U (en) | 2016-10-27 | 2016-10-27 | Back taper head screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190684U true CN206190684U (en) | 2017-05-24 |
Family
ID=58732269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621179018.3U Expired - Fee Related CN206190684U (en) | 2016-10-27 | 2016-10-27 | Back taper head screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438632A (en) * | 2016-10-27 | 2017-02-22 | 苏州市淞舜五金有限公司 | Inverted cone point screw |
-
2016
- 2016-10-27 CN CN201621179018.3U patent/CN206190684U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438632A (en) * | 2016-10-27 | 2017-02-22 | 苏州市淞舜五金有限公司 | Inverted cone point screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20171027 |