CN107237806A - Nut retaining locking device - Google Patents
Nut retaining locking device Download PDFInfo
- Publication number
- CN107237806A CN107237806A CN201710678071.0A CN201710678071A CN107237806A CN 107237806 A CN107237806 A CN 107237806A CN 201710678071 A CN201710678071 A CN 201710678071A CN 107237806 A CN107237806 A CN 107237806A
- Authority
- CN
- China
- Prior art keywords
- nut
- interior external
- external thread
- thread sleeve
- thread
- 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
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 235000010599 Verbascum thapsus Nutrition 0.000 claims abstract 2
- 244000178289 Verbascum thapsus Species 0.000 claims abstract 2
- 229910000639 Spring steel Inorganic materials 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/122—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts foreseen with mating surfaces inclined, i.e. not normal, to the bolt axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/20—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of steel wire or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
Abstract
Nut retaining locking device, by interior external thread sleeve (1), tighten up nut (2) and spacing helical ring (3) composition, the inside of interior external thread sleeve (1) is the standard female of two ends all insertions, outside is the big taper thread of the small left end of right-hand member, the interior external thread sleeve (1) is along its axis direction, often hold and be provided with least one blind slot, and left and right end is interlaced, the inside for tightening up nut (2) is the inside tapered thread of insertion, its left end is the big end of inside tapered thread, right-hand member is inside tapered thread small end, this nut retaining locking device is before use, above-mentioned nut (2) of tightening up is spun on interior external thread sleeve right-hand member, and be clamped on the spacing helical ring (3) of interior external thread sleeve low order end and block, prevent it from being come off to retrogressing during extreme position.Before using the present apparatus, first by plain nut, it is tightened in by specification on bolt, then the present apparatus is screwed in hand on bolt until the left end of interior external thread sleeve (1) props up the outer end of plain nut, finally turned with spanner and tighten up nut (2) and be moved to the left, the internal thread holding of interior external thread sleeve (1) will be made motionless on bolt, plain nut retaining is propped up locking.
Description
Technical field
The present invention relates to nut retaining locking device --- the mode of self-locking is tightened up it and standard in particular with screw thread
Nut is supported the use, and to reach effect that protective standard nut retaining is locking, belongs to mechanical field.
Background technology
Screw thread is all be unable to do without since forefathers invent and apply threaded fastener, in the equipment of all trades and professions, facility tight
The extensive use of firmware, it may be said that threaded fastener turns into classic products, it is tens of from now on, or even in centuries all without
Withdraw from the market and be eliminated.
But its is inherent to have the disadvantage, it particularly vibrates and used in violent occasion in various equipment, facility, past
It is led to a disaster toward meeting because nut is released.Trace it to its cause be threaded fastener screw bolt and nut with the use of when, its inside and outside spiral shell
Tooth is in engagement, it is necessary to leave space.This result in nut on bolt it is in place tighten after, its gap is still present.And be somebody's turn to do
Gap can be analyzed to axial gap and the class of radial clearance two.It is widely used in the market and the elimination introduced in the document gap
Product and method, mainly have flat shim, spring washer, double nut, the nut with nylon union thimble, inserted sheet metal nut and hexagonal
Binding nut etc..But it is only capable of eliminating the axial gap between standard nut and bolt thread in utilization mostly, its radial clearance is still
So exist.Once the vibration of place equipment, facility is frequently violent, the function of Anti-loosen stop is just immediately lost.In current highway,
In the case that high ferro motor-car is increasingly applied, its Anti-loosen stop to threaded fastener requires more and more higher, in the urgent need to one
Simple in construction, the reliable threaded fastener of Anti-loosen stop function-stable or its supporting companion is planted to take on this important task.
The content of the invention
Present disclosure is to provide a kind of novel nut retaining locking device, it is characterized in that by interior external thread sleeve, tightening up
Nut and spacing spiral are combined, and the inside of interior external thread sleeve is the standard female of two ends all insertions, and outside is small for right-hand member, left
The big outer cone thread in end, the interior external thread sleeve is often held along its axis direction and is provided with least one blind slot, and left and right end is mutually handed over
Mistake, the inside for tightening up nut is the inside tapered thread of insertion, and its left end is the big end of inside tapered thread, right-hand member for the small of inside tapered thread
Above-mentioned nut of tightening up is spun on interior external thread sleeve right-hand member by end, this nut retaining locking device using preceding, and is clamped on interior
The spacing helical ring of external thread sleeve low order end is blocked, and prevents it from being come off when backing to extreme position, this nut retaining locking device
The plain nut of the parameters such as pitch, the thread form of interior its internal thread of external thread sleeve and same specification is completely the same, the outer spiral shell of the interior external thread sleeve
Line is that right-hand member is small end, and left end is the outer cone thread held greatly, and its taper is between 2 °~30 °.
In addition, the interior external thread sleeve two ends are held at least be provided with a upper and lower insertion, left and right ends one end in the axial direction, often
Be open the obstructed blind slot of the other end, and the phase cross-over equilibrium arrangement of left and right ends blind slot circumferentially, and its groove width is at least
0.5mm。
The profile for tightening up nut in the present apparatus is regular hexagon but the endoporus is also the inner cone screw of left and right insertion, and it is right
The small end for inside tapered thread is held, left end is the big end of inside tapered thread, and its taper is corresponding with the taper of interior external thread sleeve outer cone spiral shell side,
Also between 2 °~30 °, and the parameter such as pitch, the thread form of its inside tapered thread correspondence completely is consistent, and nut is tightened up in the present apparatus
Axial length, be interior external thread sleeve overall length 1/2nd within.
Spacing helical ring in the present apparatus is formed by spring steel wire coiling, and the cross section of the spring steel wire is triangle,
Its pitch is consistent with the pitch of the outer cone thread of supporting interior external thread sleeve, and its internal diameter is less than outer cone thread and tightens up rear right-hand member
The size of end diameter, to be clamped on all the time in the helicla flute of outer cone thread low order end, its girth is more than half cycle, less than etc.
Yu Yizhou.
After the plain nut of fastening is tightened by code requirement, first the present invention assembled --- nut stops
Locking device is moved back, is screwed in hand on bolt, until the big end end face of external thread sleeve touch plain nut to be protected in the present apparatus
Outer end.At this moment the outer regular hexagon for tightening up nut is turned with spanner, due to inside tapered thread and the interior external thread sleeve of the hex nut
Outer cone thread taper it is corresponding, and interior external thread sleeve is in the axial direction, and there is interlaced blind slot left and right ends, pull
It is dynamic to tighten up nut and be moved to the left, the radial dimension contraction of interior external thread sleeve can be more tightened up, the internal thread of the interior external thread sleeve is embraced
Tightly in bolt helicla flute, until gap is completely eliminated therebetween.Because fastening thread is usually the three of 55 ° or 60 ° angle of threads
Angular screw thread, therefore the internal thread of interior external thread sleeve can be forced tightening up when nut is being tightened up, both eliminated in bolt helicla flute
Radial clearance therebetween eliminates axial gap therebetween again, and the loose fit become between its screw pair is interference fit, firmly
It is fastened in bolt helicla flute, steadfastly stands on one's ground.Then the interior external thread sleeve end face of its left end props up protected plain nut not again
It must retreat, realize its locking purpose.
When to unload the nut fastened, the outer-hexagonal part that the present invention tightens up nut is reversely pulled with spanner first
Move right, then its internal inside tapered thread can unclamp the outer cone thread on interior external thread sleeve, in the presence of metallic elastic, by
The interior external thread sleeve shunk is compressed, is put to good use under blind slot effect, is restored to the original state, make between its internal thread and bolt helicla flute
Interference fit becomes loose fit again, when tightening up nut and backing to the extreme position of interior external thread sleeve to the right, be connected in already in
Spacing helical ring in external thread sleeve low order end helicla flute, will hinder this to tighten up nut and continue to retreat, have to drive whole inside and outside
Swivel nut and thereon tighten up nut.Spacing helical ring is integrally exited from bolt.At this moment can successfully it be unloaded with common wrench again
The plain nut being tightened.The pretightning force being threadedly coupled in whole screwing system is all undertaken by plain nut, this spiral shell
Female retaining locking device is tightly to withstand plain nut to prevent it from retreating, to reach locking purpose.
Brief description of the drawings
Fig. 1 is the present invention --- the diagrammatic cross-section of nut retaining locking device general assembly drawing front view
(1) is interior external thread sleeve in Fig. 1, and (2), to tighten up nut, (3) are spacing helical ring.
Fig. 2 is the present invention --- nut retaining locking device, the diagrammatic cross-section of interior external thread sleeve front view
(21) are standard female in Fig. 2, and (22) are outer cone thread, and (23) are up/down perforation one end open, the other end
It is obstructed, left and right phase cross-over, the blind slot of equilibrium arrangement.
Fig. 3 is the present invention --- nut retaining locking device, tightens up the diagrammatic cross-section of nut front view
(31) are regular hexagon profile in Fig. 3, and (32) are inside tapered thread.
Embodiment
As shown schematically in fig. 1, the present apparatus is finished using preceding assembled, when in present apparatus protection equipment to be used or facility
Plain nut do not retreated for reasons such as vibrations when releasing, it is ensured that it is securely by tightly silking is motionless in bolt in advance.
First the pretightning force for wanting the plain nut of pretension to be screwed to meet code requirement with conventional torque spanner, then take
Playing the present apparatus makes big end on interior external thread sleeve (1) forward, that is, illustrates left end, its end internal thread is introduced into the helicla flute of bolt
On, the end face of its left end is touched the plain nut outer face of pretension with hand, at this moment turn this dress with common pull again
The outer regular hexagon of nut (2) is tightened up in putting, it is progressively moved to the left, at this moment due to interior outer cone thread and interior external thread sleeve (1)
The effect of tightening up of upper blind slot, tightens up nut (2) and is more moved to the left, then makes the internal thread thread in interior external thread sleeve (1) in bolt
Being embraced in helicla flute must be tighter.Because the thread of fastening thread is usually the triangle of 55 ° or 60 °, then the radial direction in the screw pair
Gap and axial gap are eliminated simultaneously.The loose fit become in its screw pair is interference fit, the zero of every interference fit
Part is typically what will not be loosened in the vibration of equipment or facility.And pull tighten up nut (2) it is more past move left it is then locking
It is more firm.
Due to the self-locking action of the present apparatus, it is locked on bolt and steadfastly stands on one's ground completely, and the left end end of interior external thread sleeve (1)
Face firmly props up the lateral surface of plain nut again, therefore the plain nut is impossible to retreat, and has also just reached locking mesh
's.In whole screwing system, the pretightning force of screw threads for fastening is undertaken by plain nut completely, and it is common that the present apparatus only plays prevention
Nut retreats and prevented the function of loosening.
When to dismantle the plain nut of pretension, nut (2) is tightened up as long as reversely being turned in the present apparatus with common wrench
When, gradually move right, i.e., moved from the big end of outer cone thread to small end with nut (2) is tightened up, pressed on interior external thread sleeve (1)
The blind slot of contracting is extended in the presence of metallic elastic to come, the internal thread in interior external thread sleeve (1) also with bolt helicla flute
Interference fit is transformed into loose fit again.When tightening up nut (2), to move right to and be clamped on interior external thread sleeve (1) outer cone thread small
When spacing helical ring (3) in the helicla flute at end is contacted, because the helical ring (3) is made up of spring steel wire, its slot cross-section
For 55 ° or 60 ° of triangle, and the pitch of the helical ring is equal with the pitch of outer cone thread on interior external thread sleeve (1), and its
Zhou Changwei was more than half cycle, less than or equal to one week, and its internal diameter is less than end diameter size when interior external thread sleeve (1) shrinks, therefore not
When compressing or restore by interior external thread sleeve (1), the spacing helical ring can not only be limited and tighten up with banding in helicla flute all the time
While nut (2) continues to retreat, the internal thread left end end face and plain nut lateral surface for turning interior external thread sleeve (1) are disengaged, after
And a whole set of present apparatus is very easily taken off from bolt helicla flute.At this moment conventional method can be used, it is general under very easily dismantling
Logical clamp nut.
In addition, tightening up nut (2) its Design of length into 1/2nd of interior external thread sleeve (1) overall length, its mesh in the present apparatus
Be that the space for having overall length 1/2nd can be used for interior outer cone thread to tighten up regulation.
In summary, the present apparatus is the locking protection device of retaining of plain nut, ingenious in design, and function is reliable, at home
Taken the course of its own in outer nut locking device, the use of the device can make to ensure clamp nut in the fierce occasion of various vibrations
Workpiece is perfectly safe reliably.
Claims (5)
1. nut retaining locking device, it is characterized in that by interior external thread sleeve, tightening up nut and spacing helical ring is combined, inside and outside spiral shell
The inside of set is the standard female of two ends all insertions, and outside is the big taper thread of the small left end of right-hand member, and the interior external thread sleeve is along its axle
Line direction, often holds and is provided with least one blind slot, and left and right end is interlaced, and the inside for tightening up nut is the inner cone spiral shell of insertion
Line, its left end is the big end of inside tapered thread, and right-hand member is inside tapered thread small end, and this nut retaining locking device is before use, will be upper
State to tighten up nut and be spun on interior external thread sleeve right-hand member and be clamped on the spacing helical ring of interior external thread sleeve low order end and block, prevent it from arriving
Retreat and come off during extreme position.
2. nut retaining locking device according to claim 1, it is characterized in that：The internal thread of interior external thread sleeve its pitch, tooth
The plain nut of the parameters such as type and same specification is completely the same, and the external screw thread of the interior external thread sleeve is that right-hand member is small end, and left end is big end
Taper thread, its taper be 2 °~30 ° between.
3. nut retaining locking device according to claim 1, it is characterized in that：Interior external thread sleeve two ends in the axial direction,
Often hold and be at least provided with a upper and lower insertion, the obstructed blind slot of the left and right ends one end open other end, and left and right ends blind slot exists
Phase cross-over on circumference, equilibrium arranges that its groove width is at least 0.5mm.
4. nut retaining locking device according to claim 1, it is characterized in that：The profile for tightening up nut is positive six side
Shape, but the endoporus is also the inner cone screw of left and right insertion, and its right-hand member is the small end of inside tapered thread, and left end is big for inside tapered thread
End, its taper is corresponding with the taper of interior external thread sleeve outer cone thread, also between 2 °~30 °, and the pitch of its inside tapered thread,
The parameters such as thread form, the pitch with the outer cone thread of interior external thread sleeve, the parameter such as thread form are corresponded to completely, in the present apparatus, tighten up nut
Axial length, be interior external thread sleeve overall length 1/2nd within.
5. nut retaining locking device according to claim 1, it is characterized in that：Spacing helical ring is by spring steel wire coiling
Form, the cross section of the spring steel wire is triangle, its pitch and the pitch phase one of the outer cone thread of supporting interior external thread sleeve
Cause, its internal diameter is less than the size that outer cone thread tightens up rear right-hand member end diameter, most right to be clamped on outer cone thread all the time
In the helicla flute at end, its girth was more than half cycle, less than or equal to one week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678071.0A CN107237806A (en) | 2017-08-04 | 2017-08-04 | Nut retaining locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678071.0A CN107237806A (en) | 2017-08-04 | 2017-08-04 | Nut retaining locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107237806A true CN107237806A (en) | 2017-10-10 |
Family
ID=59989904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710678071.0A Pending CN107237806A (en) | 2017-08-04 | 2017-08-04 | Nut retaining locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107237806A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605918A (en) * | 2017-10-30 | 2018-01-19 | 安徽凯瑞汽配制造有限公司 | A kind of retaining loosens dynamic easy-to-dismount nut |
| CN107740807A (en) * | 2017-11-29 | 2018-02-27 | 忻建国 | A kind of combination stop nut locked using tapered thread |
| CN109751323A (en) * | 2019-01-29 | 2019-05-14 | 武筱茜 | A kind of self-locking thread pair |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833067A1 (en) * | 1996-09-26 | 1998-04-01 | Andreas Ortmann | Non-removable threaded joint |
| CN2350580Y (en) * | 1998-03-05 | 1999-11-24 | 曾庆生 | Self-locking locknut for pressing-in friction pairs |
| CN1773132A (en) * | 2004-11-13 | 2006-05-17 | 张明莹 | Elastic pin for preventing nut from pulling-off |
| CN201448340U (en) * | 2009-03-13 | 2010-05-05 | 何天麟 | Semicircular steel wire burglary-resisting retaining ring |
| CN101922500A (en) * | 2010-08-25 | 2010-12-22 | 华和平 | Device for preventing loosening and dismounting nuts and tool special for mounting and dismounting same |
| CN203756706U (en) * | 2013-12-26 | 2014-08-06 | 上海底特精密紧固件股份有限公司 | Controllable-pressure type locking combined nut |
| CN205503711U (en) * | 2016-03-25 | 2016-08-24 | 罗灿 | Independent controllable elasticity cover locknut |
| CN106224355A (en) * | 2016-10-10 | 2016-12-14 | 华和平 | Elastic cone wedging type stop nut |
| CN206092662U (en) * | 2016-10-10 | 2017-04-12 | 华和平 | Elastic cone wedging formula locknut |
| CN207246198U (en) * | 2017-08-04 | 2018-04-17 | 华和平 | Nut retaining locking device |
-
2017
- 2017-08-04 CN CN201710678071.0A patent/CN107237806A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833067A1 (en) * | 1996-09-26 | 1998-04-01 | Andreas Ortmann | Non-removable threaded joint |
| CN2350580Y (en) * | 1998-03-05 | 1999-11-24 | 曾庆生 | Self-locking locknut for pressing-in friction pairs |
| CN1773132A (en) * | 2004-11-13 | 2006-05-17 | 张明莹 | Elastic pin for preventing nut from pulling-off |
| CN201448340U (en) * | 2009-03-13 | 2010-05-05 | 何天麟 | Semicircular steel wire burglary-resisting retaining ring |
| CN101922500A (en) * | 2010-08-25 | 2010-12-22 | 华和平 | Device for preventing loosening and dismounting nuts and tool special for mounting and dismounting same |
| CN203756706U (en) * | 2013-12-26 | 2014-08-06 | 上海底特精密紧固件股份有限公司 | Controllable-pressure type locking combined nut |
| CN205503711U (en) * | 2016-03-25 | 2016-08-24 | 罗灿 | Independent controllable elasticity cover locknut |
| CN106224355A (en) * | 2016-10-10 | 2016-12-14 | 华和平 | Elastic cone wedging type stop nut |
| CN206092662U (en) * | 2016-10-10 | 2017-04-12 | 华和平 | Elastic cone wedging formula locknut |
| CN207246198U (en) * | 2017-08-04 | 2018-04-17 | 华和平 | Nut retaining locking device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605918A (en) * | 2017-10-30 | 2018-01-19 | 安徽凯瑞汽配制造有限公司 | A kind of retaining loosens dynamic easy-to-dismount nut |
| CN107605918B (en) * | 2017-10-30 | 2023-08-22 | 安徽凯瑞汽配制造有限公司 | Anti-loosening nut easy to disassemble and assemble |
| CN107740807A (en) * | 2017-11-29 | 2018-02-27 | 忻建国 | A kind of combination stop nut locked using tapered thread |
| CN107740807B (en) * | 2017-11-29 | 2024-05-10 | 忻建国 | Combined locknut locked by conical threads |
| CN109751323A (en) * | 2019-01-29 | 2019-05-14 | 武筱茜 | A kind of self-locking thread pair |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171010 |
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| RJ01 | Rejection of invention patent application after publication |