CN107617998A - Nut wrench for dismounting conical head nut - Google Patents
Nut wrench for dismounting conical head nut Download PDFInfo
- Publication number
- CN107617998A CN107617998A CN201711104722.1A CN201711104722A CN107617998A CN 107617998 A CN107617998 A CN 107617998A CN 201711104722 A CN201711104722 A CN 201711104722A CN 107617998 A CN107617998 A CN 107617998A
- Authority
- CN
- China
- Prior art keywords
- nut
- claw
- arc groove
- wrench
- spanner
- 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.)
- Granted
Links
- 210000000078 claw Anatomy 0.000 claims description 86
- 238000007373 indentation Methods 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a nut wrench for disassembling and assembling a conical-head nut, which comprises a handle, a wrench body and a clamping jaw, wherein the wrench body is connected with the handle, the central part of the wrench body is provided with a first through hole, one end of the first through hole is coaxially provided with a conical notch, the circumferential surface of the conical notch is axially provided with radial arc grooves in a penetrating way, one end of the clamping jaw is clamped in the arc groove and can rotate around the center of the conical notch in a bidirectional way, the other end of the clamping jaw extends out of the arc groove and extends towards the inner cavity of the conical notch, and one end of the clamping jaw extending out of the arc groove is provided with a first bulge and a second bulge. The nut wrench can realize continuous whole-circle rotation of the nut in a limited corner without separating the wrench from the nut, thereby greatly improving the working efficiency. The nut wrench is light and convenient to use, long in service cycle and not easy to damage the surface of the nut to be disassembled and assembled.
Description
Technical field
The present invention relates to a kind of spanner, and in particular to a kind of nut spanner for being used to dismount circular cone head nut.
Background technology
Spanner is a kind of conventional dismantling device, and the more common instrument of existing assembling-disassembling bolt nut is pipe vice or interior
Hexagon wrench, pipe vice can damage the circular conical surface of nose cone nuts and bolt when dismounting conical head bolt and nut, be unfavorable for
Being dismounted for multiple times.Inner hexagon spanner is only used for the dismounting of hexagon socket head cap screw, and once interior hexagonal is damaged, dismounting will be unable to
Into.Limited by dismounting space, existing spanner often rotates, must just removed spanner in rotating nuts, again fixed
Being rotated again behind position, disassembly efficiency is relatively low, and if space very little, it more difficult in operation.
The content of the invention
The present invention provides a kind of nut spanner for being used to dismount circular cone head nut, and nut can be achieved in it in limited corner
Continuous complete cycle revolution, without spanner is separated with nut, drastically increase operating efficiency, and not easy damaged nut
Circular conical surface.
The present invention adopts the technical scheme that：
A kind of nut spanner for being used to dismount circular cone head nut, including handle, in addition to wrench body and claw, the spanner
Handle is linked with body, the central part of wrench body is provided with first through hole, conical indentation is coaxially provided with one end of first through hole,
Axially through radial arc groove is equipped with the periphery of the conical indentation, one end of claw is fastened in arc groove
And Double-directional rotary can be done around the center of conical indentation, the other end of claw stretches out arc groove and prolonged to the inner chamber of conical indentation
Stretch, one end that the claw stretches out arc groove is provided with first raised and the second projection.
The nut spanner for being used to dismount circular cone head nut of the present invention is a kind of self-locking spanner, is enclosed on spanner during use
On the outer peripheral face of nut to be dismounted, one end of claw is freely free against the arc surface of wrench body arc groove, the other end of claw
Against the outer peripheral face of nut to be dismounted, now, the distance of claw end to spanner center is maximum.During work, handle band wrench
Body rotates forward or backwards, while wrench body drives claw to turn around spanner center (i.e. the center of the conical indentation of wrench body)
Dynamic, the distance at claw end to spanner center is gradually reduced, until a projection of claw and nut outer peripheral face to be dismounted are close
Contact finally produces self-locking (another projection of claw separates with nut), claw clamping nut because of friction.It is rotated further hand
Handle, the outer peripheral face of claw binding nut drive nut rotation.Spanner is rotated backward a little, claw, which rotates backward, returns to initial shape
State, claw separate with nut.After handle goes to correct position, continuing to rotate forward spanner, claw continues binding nut, until
Complete work.Therefore, when dismounting circular cone head nut or conical head bolt, even in limited operating space, also it is not required to
Spanner is removed, constantly adjusts the position of spanner.
As improvement of the present invention, the nut spanner also includes spanner end cap, and the central part of spanner end cap is provided with the
Two through holes, the side that spanner end cap is provided with conical indentation by bolt with wrench body are connected.Can by the sealing of spanner end cap
Cleaning inside retaining nut spanner, prevent dust greasy dirt etc. from entering.
As improvement of the present invention, the claw is in prismatic column, includes the claw body of column, claw body
The outer peripheral face of side projects radially outwardly the head to be formed in arc surface, and the head is movably fastened on conical indentation
In arc groove, the outer peripheral face of claw body tail section projects radially outwardly first raised and the second projection to form claw.Column card
The design of pawl body is in order to increase the contact surface of claw and nut, in order to reliably clamp nut.The head design of arc surface
The frictional force that claw slides in wrench body can be reduced, uses spanner light and handy.
As a further refinement of the present invention, the first of the claw is raised and the second raised cross section is circular arc
Shape.First projection and the second projection are in semi-cylindrical, and when claw rotates and turns round, the projection of semi-cylindrical is in nut to be dismounted
Outer peripheral face slide, frictional force can be reduced, reduce the infringement to nut surface.
As improvement of the present invention, the bus of the conical indentation is parallel with the center line of its arc groove.So
Design be that claw is fastened on circle with the gradient equal with conical indentation cone angle in order that arc groove has constant cross section
When in arc groove, claw uniform force, abrasion is reduced.
As the further improvement to the present invention, the claw is in prismatic column, with the cone with conical indentation
The equal gradient in angle is fastened in arc groove.The design makes spanner of the invention uniform force when in use, reduces friction, extends
The service life of spanner.Claw can contact along nut thickness direction to be dismounted is as much as possible with nut, increase friction, enhancing folder
Holding force is to reach more reliable clamping nut.
As the further improvement to the present invention, the taper of the conical indentation is 5~30 degree.It is existing to wait to tear open
The taper of loading nut is usually 5~30 degree, and the taper for designing conical indentation is adapted to it, can obtain claw and with dismounting spiral shell
Female bigger contact surface, makes clamping more reliable.
As a further refinement of the present invention, the claw is equipped with 2~16.When nut size to be dismounted is smaller or
When larger, in order to obtain the spanner being more adapted to, suitable claw quantity is designed, in order that clamping is reliable and spanner structure is light and handy.
Claw is minimum to set 2, at most sets 16, the claw of too many quantity will reduce the weight for turning round distance and increase spanner of spanner
Amount.
As improvement of the present invention, the arc groove of the conical indentation is equipped with 2~16.It is such design be for
More reliably clamp nut.
As improvement of the present invention, the material of the claw is plastics or mild steel.The hardness of claw material is far below spiral shell
Can produce bigger frictional force when mother, will not cause to damage to the outer peripheral face of nut, and clamping when clamping nut rotation makes
Clamping is more reliable.
Beneficial effects of the present invention：The nut spanner of the present invention can realize that the continuous complete cycle of nut returns in limited corner
Turn, without spanner is separated with nut, drastically increase operating efficiency.The flexible clamping spiral shell that the present invention passes through claw
Mother, the overhang of claw is adjustable and claw is easily changed, spanner service life of the invention length.Hardness is selected to be less than the card of nut
Pawl, claw are clamping the face of cylinder that nut is not easy damaged nut, nut will not caused to damage.Present invention may also apply to other
The dismounting of nut, as long as the afterbody of design claw can be against the outer peripheral face of nut.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present invention.
Fig. 2 is Fig. 1 half sectional view (removal handle).
Fig. 3 is the top view of wrench body in Fig. 1.
Fig. 4 is Fig. 3 half sectional view.
Fig. 5 is the front view of claw in Fig. 1.
Fig. 6 is Fig. 5 side view.
Fig. 7 is Fig. 1 A partial enlarged drawing (removing the screw hole on claw body).
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, the technology below in conjunction with accompanying drawing to the present invention
Scheme is clearly and completely described.
The implication of heretofore described " inside and outside " referred to relative to equipment itself, the side inside sensing equipment
To be interior, on the contrary is outer.
The implication of heretofore described " axial direction " refers to referring to the equipment axle center identical direction, the implication of " radial direction "
Be and axial perpendicular direction.
Referring to accompanying drawing 1 and Fig. 2, a kind of nut spanner for being used to dismount circular cone head nut, including handle 3, wrench body 1, card
Pawl 2 and spanner end cap 4, wrench body 1 are in the flat column of polygon-octagonal, are embedded at the center of handle 3, pull in other embodiments
Hand can be also connected with handle using other types of attachment in the prior art.Wrench body is designed in the present embodiment in polygon-octagonal
Flat column, it is embedded the heart in the handle.The wrench body of the different size of identical appearance is designed (by changing the shape inside wrench body
Or the size of claw), suitable wrench body is selected according to the nut to be dismounted of different size during use, it is only necessary to change wrench body
Work can be completed, wrench body, which carries, to be changed conveniently.End cap 4 is arranged on wrench body 1 by bolt 41.
Referring to Fig. 3 and Fig. 4, the central part of wrench body 1 is provided with first through hole 13, and circle is coaxially provided with one end of first through hole
Tapered indentations 11, axially through being equipped with radial arc groove 111 on the periphery of conical indentation 11, arc groove 111
The center line of circular arc is parallel with the bus of conical indentation 11, i.e., arc groove 11 is a prismatic groove.In the present embodiment
The taper of conical indentation is 18 degree, can also be selected in other embodiments between 5~30 degree.It is all provided with altogether in the present embodiment
There are 8 arc grooves, arc groove can also be set to 2~16 in other embodiments.In the present embodiment, wrench body 1 and circular cone
The intersecting face 112 of v notch v 11 is designed as perpendicular with the inclined plane of conical indentation, and such design can make insertion conical
The terminal surface of column claw 2 in the arc groove of breach is completely attached to face 112, and claw can be avoided by the pressing of spanner end cap
Axial motion is produced in use, reduces the service life of the friction extension spanner of claw and wrench body.
Refering to Fig. 5 and Fig. 6, claw 2 is in prismatic column, and the outer peripheral face radially outwardly projecting of the side of column claw body goes out
Formed in arc surface head 21, the outer peripheral face of the afterbody of claw body project radially outwardly to be formed claw first projection 22 and
Second projection 23, the first projection 22 are provided with arc surface 221, and the second projection 23 is provided with arc surface 231, the first projection and second
Projection is in semi-cylindrical.Refering to Fig. 1, the head 21 of claw 1 is fastened in the arc groove 111 of the conical indentation of claw body 1,
Its afterbody stretches out arc groove and extended to the inner chamber of claw body.Refering to Fig. 7, between being provided between arc groove 111 and claw head 21
Gap, the distance S1 at the minimal openings of arc groove 111 are less than the maximum interval S 2 on claw head 21, and claw 2 is by cone shaped opening
After in 11 insertion arc grooves 111, Double-directional rotary can be done around the center line of claw body 1 without deviating from from arc groove.This reality
Apply in example, altogether provided with equal 8 claws, can also be provided with 2~16 in other embodiments.The material of claw is in the present embodiment
Nylon plastic(s), other plastics or mild steel are alternatively in other embodiments, selected according to the hardness of nut to be dismounted.
The present invention operation principle be：
1) according to the suitable nut wrench of the diameter of nut to be dismounted selection；
2) spanner is enclosed on to the periphery of nut to be dismounted by the nutplate gloves assembled on circular cone head nut, during use
On face, one end (claw head) of claw is freely against the arc surface of wrench body arc groove, the other end (claw afterbody) of claw
Freely against the outer peripheral face of nut to be dismounted, now, the distance of claw end to spanner center is maximum.
During work, handle drives wrench body to rotate forward or backwards, while wrench body drives claw (to be pulled around spanner center
The center of the conical indentation of hand body) rotate, the distance at claw end to spanner center is gradually reduced, until the one of claw afterbody
Individual raised be in close contact with nut outer peripheral face to be dismounted finally produces self-locking because of friction, another raised and nut point of claw
From claw clamping nut.Handle is rotated further, the outer peripheral face of claw binding nut drives nut rotation.
Spanner is rotated backward a little, claw, which rotates backward, returns to original state, and claw separates with nut.Treat that handle is gone to
After correct position, continue to rotate forward spanner, claw continues binding nut, until completing work.
It is prior art not do the part illustrated in description above, or can be realized by prior art.
Claims (10)
1. a kind of nut spanner for being used to dismount circular cone head nut, including handle, it is characterised in that：Also include wrench body and card
Pawl, handle is linked with the wrench body, the central part of wrench body is provided with first through hole, is coaxially provided with one end of first through hole
Conical indentation, axially through being equipped with radial arc groove, one end card of claw on the periphery of the conical indentation
It is located in arc groove and Double-directional rotary can be done around the center of conical indentation, the other end of claw stretches out arc groove and lacked to cone
The inner chamber extension of mouth, one end that the claw stretches out arc groove are provided with first raised and the second projection.
2. nut spanner according to claim 1, it is characterised in that：Also include spanner end cap, in the spanner end cap
Center portion is provided with the second through hole, and the side that spanner end cap is provided with conical indentation by bolt with wrench body is connected.
3. nut spanner according to claim 1 or 2, it is characterised in that：The claw is in prismatic column, including post
The claw body of shape, the outer peripheral face of claw body side project radially outwardly the head to be formed in arc surface, and the head can live
It is fastened on dynamicly in the arc groove of conical indentation, the outer peripheral face of claw body tail section projects radially outwardly to form the first of claw
Raised and the second projection.
4. nut spanner according to claim 3, it is characterised in that：The first projection and the second raised horizontal stroke of the claw
Section is circular arc.
5. nut spanner according to claim 1 or 2, it is characterised in that：The bus of the conical indentation and its circular arc
The center line of groove is parallel.
6. nut spanner according to claim 5, it is characterised in that：The claw is in prismatic column, with circular cone
The gradient that the cone angle of v notch v is equal is fastened in arc groove.
7. nut spanner according to claim 6, it is characterised in that：The taper of the conical indentation is 5~30 degree.
8. nut spanner according to claim 1 or 2, it is characterised in that：The claw is equipped with 2~16.
9. nut spanner according to claim 1 or 2, it is characterised in that：The arc groove of the conical indentation is equipped with 2
~16.
10. nut spanner according to claim 1 or 2, it is characterised in that：The material of the claw is plastics or mild steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711104722.1A CN107617998B (en) | 2017-11-10 | 2017-11-10 | Nut wrench for dismounting conical head nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711104722.1A CN107617998B (en) | 2017-11-10 | 2017-11-10 | Nut wrench for dismounting conical head nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107617998A true CN107617998A (en) | 2018-01-23 |
| CN107617998B CN107617998B (en) | 2019-06-18 |
Family
ID=61098904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711104722.1A Active CN107617998B (en) | 2017-11-10 | 2017-11-10 | Nut wrench for dismounting conical head nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107617998B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153933A (en) * | 2019-06-21 | 2019-08-23 | 东莞堡威自动化科技有限公司 | A kind of tool changing tool special spanner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3906822A (en) * | 1973-05-03 | 1975-09-23 | Nicholas Leslie Hertelendy | Ratchet wrenches |
| CN87203459U (en) * | 1987-07-14 | 1988-10-19 | 地方国营盖县锅炉辅机厂 | Spanner for double-head screw bolt |
| JP2001239468A (en) * | 2000-02-28 | 2001-09-04 | Yamashita Kogyo Kenkyusho:Kk | Torque adapter |
| CN202753067U (en) * | 2012-06-20 | 2013-02-27 | 东莞市希普思五金机械有限公司 | an elastic wrench |
| CN104314947A (en) * | 2014-10-30 | 2015-01-28 | 南京信息职业技术学院 | Anti-theft nut and wrench |
| US20150343615A1 (en) * | 2013-02-14 | 2015-12-03 | ToolTech, LLC | Socket Fastener Removal Tool |
-
2017
- 2017-11-10 CN CN201711104722.1A patent/CN107617998B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3906822A (en) * | 1973-05-03 | 1975-09-23 | Nicholas Leslie Hertelendy | Ratchet wrenches |
| CN87203459U (en) * | 1987-07-14 | 1988-10-19 | 地方国营盖县锅炉辅机厂 | Spanner for double-head screw bolt |
| JP2001239468A (en) * | 2000-02-28 | 2001-09-04 | Yamashita Kogyo Kenkyusho:Kk | Torque adapter |
| CN202753067U (en) * | 2012-06-20 | 2013-02-27 | 东莞市希普思五金机械有限公司 | an elastic wrench |
| US20150343615A1 (en) * | 2013-02-14 | 2015-12-03 | ToolTech, LLC | Socket Fastener Removal Tool |
| CN104314947A (en) * | 2014-10-30 | 2015-01-28 | 南京信息职业技术学院 | Anti-theft nut and wrench |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153933A (en) * | 2019-06-21 | 2019-08-23 | 东莞堡威自动化科技有限公司 | A kind of tool changing tool special spanner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107617998B (en) | 2019-06-18 |
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Address after: 210013 99 Wen Lan Road, Xianlin University Town, Nanjing, Jiangsu Applicant after: Nanjing Vocational College of Information Technology Address before: 210013 55 Wen Lan Road, Xianlin University Town, Nanjing, Jiangsu Applicant before: Nanjing Vocational College of Information Technology |
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