CN102734302A - Twin locking round nut - Google Patents
Twin locking round nut Download PDFInfo
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- CN102734302A CN102734302A CN2012101822305A CN201210182230A CN102734302A CN 102734302 A CN102734302 A CN 102734302A CN 2012101822305 A CN2012101822305 A CN 2012101822305A CN 201210182230 A CN201210182230 A CN 201210182230A CN 102734302 A CN102734302 A CN 102734302A
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- round nut
- trapezoidal round
- trapezoidal
- convex
- nut
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Abstract
The invention relates to a twin locking round nut, which is mainly formed by an inner trapezoidal round nut and an outer trapezoidal round nut, wherein the outer trapezoidal round nut for compressing the inner trapezoidal round nut is arranged on the outer side of the inner trapezoidal round nut; two inner convex grooves are at least arranged on an outer side circumferential face of the inner trapezoidal round nut; at least two axial through holes are arranged in a circumferential face of the outer trapezoidal round nut, corresponding to the inner convex grooves; a locating pin and a locking screw are sequentially arranged in each axial through hole; an outer convex groove matched with each inner convex groove is arranged on the front end face of each locating pin; inner holes of the inner trapezoidal round nut and the outer trapezoidal round nut are respectively provided with trapezoidal threads with thread form angles being beta; the inner convex groove and the outer convex grooves are provided with convex angles alpha; and each convex angle alpha is larger than each thread form angle beta. Compared with the prior art, the twin locking round nut integrates the locking and the locating of the twin locking round nut and the tight conjunction and looseness prevention of the convex grooves, and has the advantages of ingenuous structure, reliability in location, accuracy, looseness prevention, convenience in installation, easiness in disassembly and the like.
Description
Technical field
The present invention relates to a kind of binary stripped nut that is used for devices such as axially locating axle, bearing and reliable lock, belong to mechanical locking device.
Background technique
At present; In mechanical industry locking field; Especially for the round nut of device such as axially locating axle, bearing, its locking mode roughly has the self locking type of employing round nut, the round nut of the tightening position pad that locks or two identical round nuts to lock jointly, but phenomenon such as some locking mode regular meetings wherein take place that locking is unreliable, get loose automatically in the location inaccuracy, running; In practical application, have not fully up to expectations aspect, can not play good locking effect.Employing is axially grooved as existing self-locking performance round nut locks with the screw end face, or the radial aperture screw lock, and these are locked regular meeting with the thread engagement mode of deforming and cause nut end face skew, axially locating inaccuracy; When adopting the lock washer mode to lock because the difficult locking plate of aiming at of bayonet socket direction during nut check causes the location unreliable; Two common locking modes of identical round nut have certain anti-loosing effect, but relatively poor in operating mode, use when longer, and the round nut of outside is prone to get loose voluntarily, does not still have good locking effect.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned existence, and provide a kind of delicate structure, axially locating reliable and accurately locking the binary stripped nut.
The objective of the invention is to accomplish through following technological scheme, it mainly is made up of a trapezoidal round nut in one and an outer trapezoidal round nut, mainly is main function with axially locating; The outer trapezoidal round nut of trapezoidal round nut in the outside of trapezoidal round nut disposes and is used for compressing in said is provided with two (section) interior convex slots on the outer circumference face of trapezoidal round nut in said at least; Offer at least two axial holes corresponding to convex slot in described on the circumferential surface of described outer trapezoidal round nut; Dispose locating stud and lock screw in this axial bore successively, and the front-end face of said locating stud be provided with said in the spirogyrate groove that matches of convex slot.
Three (section) interior convex slots that all are provided with or are uniformly distributed with on the outer circumference face of trapezoidal round nut in said; Offer three axial holes that are uniformly distributed with on the circumferential surface of said outer trapezoidal round nut.
The endoporus of trapezoidal round nut and outer trapezoidal round nut is provided with the trapezoidal thread that angle of thread is β in said, and said interior convex slot and spirogyrate groove are provided with convex angle α, and said convex angle α>angle of thread β.
The present invention is a convenient processing and manufacture, on the position at round nut B circumferencial direction pin-and-hole place, is uniformly distributed with the convex slot (width is general identical with the pin-and-hole diameter) that has certain width equally, and its convex angle is α; And make α>β. the convex slot on the locating stud just can be filled to processing together on the round nut B at it like this, simultaneously, for making locating stud positioning stablity in pin-and-hole; Take pin and pin-and-hole that a small amount of interference fit or spline fitted are arranged; Thereby guaranteed machining accuracy, made processing simple again, cost reduces.
The thickness of trapezoidal round nut is L1 in said, and the thickness of said outer trapezoidal round nut is L2, and said L1>L2, they are main function to lock locking mainly, the two forms a binary stripped nut.
During assembling, in trapezoidal round nut pack into earlier on the axle, and band convex slot one end face is outwardly, and is urgent by prescribed torque; Reinstall outer trapezoidal round nut, and be with convex slot one end face (tight screw one end face with lock is outwardly) inwardly, wherein earlier that outer trapezoidal round nut is urgent, one by one that the lock screw on the end face is urgent by prescribed torque again by prescribed torque.
The locking effect explanation: 1. trapezoidal round nut and outer trapezoidal round nut have same trapezoidal thread in, and trapezoidal thread self has certain self-locking anti-loosening property; 2. trapezoidal round nut function is main with axially locating in, and outer trapezoidal round nut function is mainly axial locking, and its internal trapezoidal round nut axially applies certain pretightening force, can play certain anti-loosing effect; When by the regulation with the lock screw on the outer trapezoidal round nut urgent after; Spirogyrate groove on its locating stud with in interior convex slot on the trapezoidal round nut closely wedging is together each other; Convex angle α on it again>β (angle of thread), outer trapezoidal round nut is in case behind the location, be difficult to get loose voluntarily under the effect of locating stud; Play good locking and positioning effect, thereby guaranteed the reliable lock performance of binary nut-locking device.
When needs are dismantled, earlier lock screw is unclamped, the spirogyrate groove on interior convex slot in making on the trapezoidal round nut and the outer trapezoidal round nut unclamps wedging, unclamps outer trapezoidal round nut again, trapezoidal round nut in unclamping at last, dismounting is also simple and convenient like this.
The present invention compared with prior art, it is locking to integrate trapezoidal round nut locking and positioning of binary and the tight wedging of convex slot, advantage such as have delicate structure, the location is reliable, accurately locking and easy for installation, and is quick detachable.
Description of drawings
Fig. 1 is the overall structure schematic representation of binary round nut of the present invention.
Fig. 2 is the sectional structure schematic representation of binary round nut of the present invention.
Fig. 3 is that the inside and outside convex slot of binary round nut of the present invention combines local enlarged diagram.
Fig. 4 is the structural representation of the outer trapezoidal round nut of the present invention.
Fig. 5 is A-A sectional structure schematic representation of Fig. 4.
Fig. 6 is the structural representation of trapezoidal round nut in the present invention.
Embodiment
To combine below accompanying drawing to the present invention make detailed introduction: Fig. 1, shown in 2; The present invention mainly is made up of with outer trapezoidal round nut 22 trapezoidal round nut 21 in; Wherein trapezoidal round nut 21 in assembly near parts such as axle, bearings; Convex slot 32 in all being provided with on its outer circumference face can select to be provided with a piece or a section interior convex slot in other embodiments, and corresponding to the spirogyrate groove 31 that is provided with on the following said locating stud 24; The thickness of trapezoidal round nut 21 is L1 in said, is main function with axially locating mainly; Trapezoidal round nut A21 in outer trapezoidal round nut 22 is used for compressing; Have at least two axial holes 27 on its circumferencial direction, locating stud 24 and lock screw 23 be installed in said axial hole 27 successively, and the front-end face of locating stud 24 be provided with in the same spirogyrate groove 31 of trapezoidal round nut 21; The thickness of said outer trapezoidal round nut 22 is L2; And L2＜L1 is main function to lock locking mainly, and the two forms a binary stripped nut.In trapezoidal round nut 21 endoporus have trapezoidal thread 26, its angle of thread is β, convex slot 32 in the whole fillet direction in certain diameter scope is gone up in one of which side end face (outside) has continuously, its convex angle is α, and makes α>β.
Outer trapezoidal round nut 22 endoporus be provided with equally with in the same trapezoidal thread of trapezoidal round nut 21; Its angle of thread also is β; On its circumferencial direction, be evenly distributed with some axial holes 27 (shown in the figure being three); Locating stud 24 and lock screw 23 are housed in the axial hole 27, have spirogyrate groove 31 on its locating stud 24 1 ends, its convex angle also is α; Be convenient processing and manufacture; Be uniformly distributed with the convex slot 31 (width is general identical with the pin-and-hole diameter) that has certain width on the position at axial hole 27 places of trapezoidal outside round nut 22 circumferencial directions equally, its convex angle is α, and makes α>β. the convex slot on the locating stud 31 just can be processed on the trapezoidal round nut 22 outside it is filled to together like this; Simultaneously; For making locating stud 24 positioning stablity in axial hole, adopt locating stud 24 and axial hole 27 that a small amount of interference fit or spline fitted are arranged, thereby guaranteed machining accuracy; Make processing simple again, cost reduces.
During assembling, in trapezoidal round nut 21 pack into earlier on the axle, and in the band convex slot 32 1 end faces outwardly, and urgent by prescribed torque; Reinstall outer trapezoidal round nut 22, and band spirogyrate groove 31 1 end faces (tight screw one end face with lock outwardly) inwardly, wherein urgent by earlier will the be outer trapezoidal round nut of prescribed torque 22, it is urgent one by one the lock screw on the end face 23 to be pressed prescribed torque again.
The locking effect explanation: 1. trapezoidal round nut 21 has same trapezoidal thread 25 with outer trapezoidal round nut 22 in, and trapezoidal thread self has certain self-locking anti-loosening property; 2. trapezoidal round nut 21 functions are main with axially locating in, and outer trapezoidal round nut 22 functions are mainly axial locking, and its internal trapezoidal round nut 21 axially applies certain pretightening force, can play certain anti-loosing effect; When will the lock screw on the outer trapezoidal round nut B22 by regulation 23 urgent after, the convex slot 31 on its locating stud 24 with on the trapezoidal round nut 21 convex slot 32 each other tight wedgings together, the convex angle α on it again>β (angle of thread); After in a single day outer trapezoidal round nut 22 locatees, under the effect of locating stud 24, be difficult to get loose voluntarily, play good locking anti-loosing effect, thereby guaranteed the reliable lock performance of binary nut-locking device.
When needs are dismantled; Earlier lock screw 23 is unclamped, the convex slot 32 in making on the trapezoidal round nut 21 unclamps wedging with the convex slot 31 on the outer trapezoidal round nut 22, unclamps outer trapezoidal round nut 22 again; Trapezoidal round nut 21 in unclamping at last, dismounting is also simple and convenient like this.
Claims (4)
1. binary stripped nut; It mainly is made up of a trapezoidal round nut in one and an outer trapezoidal round nut; It is characterized in that said in the outside of trapezoidal round nut dispose be used for compressing in the outer trapezoidal round nut of trapezoidal round nut, be provided with convex slot in two or two sections at least on the outer circumference face of trapezoidal round nut in said; Offer at least two axial holes corresponding to convex slot in described on the circumferential surface of described outer trapezoidal round nut; Dispose locating stud and lock screw in this axial bore successively, and the front-end face of said locating stud be provided with said in the spirogyrate groove that matches of convex slot.
2. binary stripped nut according to claim 1, convex slot in three or three sections of it is characterized in that all being provided with or being uniformly distributed with on the outer circumference face of trapezoidal round nut in said; Offer three axial holes that are uniformly distributed with on the circumferential surface of said outer trapezoidal round nut.
3. binary stripped nut according to claim 1 and 2; It is characterized in that said in the endoporus of trapezoidal round nut and outer trapezoidal round nut be provided with the trapezoidal thread that angle of thread is β; Convex slot and spirogyrate groove are provided with convex angle α in said, and said convex angle α>angle of thread β.
4. binary stripped nut according to claim 3, it is characterized in that said in the thickness of trapezoidal round nut be L1, the thickness of said outer trapezoidal round nut is L2, and said L1>L2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182230.5A CN102734302B (en) | 2012-06-05 | 2012-06-05 | A kind of binary stripped nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182230.5A CN102734302B (en) | 2012-06-05 | 2012-06-05 | A kind of binary stripped nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734302A true CN102734302A (en) | 2012-10-17 |
| CN102734302B CN102734302B (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210182230.5A Active CN102734302B (en) | 2012-06-05 | 2012-06-05 | A kind of binary stripped nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102734302B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105814326A (en) * | 2014-02-11 | 2016-07-27 | 斯比特机械部件有限及两合公司 | Machine element |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144819A (en) * | 1983-08-09 | 1985-03-13 | Andreas Gutt | Torque adjustable locknut |
| US4557652A (en) * | 1983-02-02 | 1985-12-10 | Skf Nova Ab | Lockable nut |
| CN1065911A (en) * | 1991-04-16 | 1992-11-04 | 王常智 | Stress loose-proof self-lock nut |
| CN201162757Y (en) * | 2007-08-14 | 2008-12-10 | 贵州航天精工制造有限公司 | Swinging type locking device |
| CN202646310U (en) * | 2012-06-05 | 2013-01-02 | 杭州前进齿轮箱集团股份有限公司 | Two-body locking round nut |
-
2012
- 2012-06-05 CN CN201210182230.5A patent/CN102734302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4557652A (en) * | 1983-02-02 | 1985-12-10 | Skf Nova Ab | Lockable nut |
| GB2144819A (en) * | 1983-08-09 | 1985-03-13 | Andreas Gutt | Torque adjustable locknut |
| CN1065911A (en) * | 1991-04-16 | 1992-11-04 | 王常智 | Stress loose-proof self-lock nut |
| CN201162757Y (en) * | 2007-08-14 | 2008-12-10 | 贵州航天精工制造有限公司 | Swinging type locking device |
| CN202646310U (en) * | 2012-06-05 | 2013-01-02 | 杭州前进齿轮箱集团股份有限公司 | Two-body locking round nut |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105814326A (en) * | 2014-02-11 | 2016-07-27 | 斯比特机械部件有限及两合公司 | Machine element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102734302B (en) | 2015-10-14 |
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