CN105090219B - A kind of annular groove eccentric nut - Google Patents
A kind of annular groove eccentric nut Download PDFInfo
- Publication number
- CN105090219B CN105090219B CN201510541122.6A CN201510541122A CN105090219B CN 105090219 B CN105090219 B CN 105090219B CN 201510541122 A CN201510541122 A CN 201510541122A CN 105090219 B CN105090219 B CN 105090219B
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- CN
- China
- Prior art keywords
- nut
- annular
- bearing
- spron
- eccentric
- 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.)
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- 241000826860 Trapezium Species 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000579971 Terebridae Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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- 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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
-
- 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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
-
- 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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/284—Locking by means of elastic deformation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention provides a kind of annular groove eccentric nut, the nut center is provided with screwed hole, the perpendicular bisector of the axis of thread of the screwed hole and the bearing-surface of the nut has an eccentric angle, and the bearing-surface of the nut is provided with the annular spron coaxial with the perpendicular bisector of the bearing-surface extended internally.The invention has a simple structure, it is locking it is reliable, with low cost, the features such as can dismantle repeatedly, be adapted to the locking of Conventional mechanisms, with fabulous economic and social benefit.
Description
Technical field
The invention belongs to anchor design and manufacturing technology field, more particularly to a kind of eccentric spiral shell of annular groove with the flank of tooth
It is female.
Background technology
Threaded connection has that suitability is strong, is readily disassembled, it is reusable the characteristics of, therefore be widely used in all kinds of machineries
Mechanism, its main failure mode is the tired and loosening certainly under cyclic load.It is to be threaded in vibratory impulse from loosening
In the presence of, especially under alternation transverse load, the phenomenon that pretightning force is gradually lost.However, bolt and nut auxiliary connection is being held
Loosened by caused bolt connection during alternation transverse load, be one long-term an open question.It is each in mechanical industry
Individual industry, is widely present threaded connection loosening problem.At present, the counter-measure being commonly used in practical application is periodically again
Bolt is tightened, to keep satisfactory pretightning force.Due to the substantial amounts used of threaded connection pair, therefore this periodicity
Maintaining will expend substantial amounts of manpower and materials.Therefore, using a kind of locking reliable, simple structure, the screw thread being readily disassembled
Auxiliary connection will produce fabulous economic and social benefit.
Widely used whole metal self-locking nut and non-metallic insert self-locking nut is respectively provided with excellent in aerospace industry
Anti-loosening property, but its repeat performance is not good, and while its processing technology is relative complex, production cost is higher, and economy is bad,
It is constrained to promote the use of on a large scale.
The content of the invention
The invention is solves the problems of the prior art there is provided a kind of annular groove eccentric nut, with simple structure,
It is locking it is reliable, with low cost, the features such as can dismantle repeatedly, be adapted to the locking of Conventional mechanisms, with fabulous economic and society
Benefit.
A kind of annular groove eccentric nut that the invention is provided, the nut center is provided with screwed hole, the screwed hole
The perpendicular bisector of the axis of thread and the bearing-surface of the nut has an eccentric angle, and the bearing-surface of the nut, which is provided with, inwardly to be prolonged
The annular spron coaxial with bearing-surface perpendicular bisector that be stretching.
Further, during the section of the annular spron is preferably in class right-angled trapezium, the class right-angled trapezium, mutually put down
Shorter one extends to the sharp of the nut interior in nut center, the class right-angled trapezium in two capable sides
Angle part is rounded.It is preferred that, the depth that the annular spron extends into nut is the 1/3-4/5 of the height of nut.
It is furthermore preferred that the Breadth Maximum of the annular spron for inner nut edge size 1/6 and it is following.It is also preferred that the class
The acute angle portion for extending to the nut interior of the annular spron of right-angled trapezium is in 30 ° ± 1 °.
Further, the head end of the nut is a tapered plane, i.e., with the bearing-surface at an angle, the head end
The oblique angle in face is equal with the eccentric angle, can be in processing using the head end as machining benchmark, auger shell pit and tapping,
So as to ensure the processing of eccentric angle.
Further, the eccentric angle is no more than 2 °, preferably 1 ° ± 0.5 °.
Further, on the bearing-surface of the nut, the part between the screwed hole and annular spron is additionally provided with
The annular concave platform connected with the two, prevents bearing-surface when annular spron plays a role positioned at its annular inner portion because of friction
Act on and impact effect.
Further, it is provided with uniform around center positioned at the part of the annular spron periphery on the bearing-surface of the nut
Rib, it is preferred that the rib is curved in bearing-surface overlook direction.
Wherein, the bearing-surface of the nut refers to that nut end comes close to or in contact with the one side of workpiece to be tightened, with the spiral shell
The relative another side of female bearing-surface is the head end of nut.
The fastening of the invention and locking principle are as follows：
Known by practice analysis, lateral impact loading is to cause the main cause of thread looseness, especially lateral impact loading
The tangential component of caused contact causes the microslip of screw thread easily to cause bolt looseness, and the thrust pair being eccentrically formed
The loosening of screw thread has significant suppression, and in the presence of axial pre tightening force, shows extremely excellent anti-loose ability.
(1) annular spron can make nut nut body edge stress in rundown process, and nut is linear around thread spindle
Into symmetrical moment of flexure upwards, nut is set to occur elastic deformation, so that the nut pitch of upper part is pressed into fitted bolt, while nut
Bottom radially outer margin deformation, releases the fractional load of the nut pitch of bottom, makes each ridge stress of nut relatively uniform, carry
The high bearing capacity of nut thread tooth.
(2) because nut thread axis and bearing-surface vertical line have an eccentric angle, fitted bolt is in installation process, due to inclined
The heart away from effect, generate the additional bending moment to fitted bolt, and the moment of flexure collective effect of annular spron formation as previously described,
So that the carrying of all geared screw ridges tends to be uniform, this is mainly preceding two circles ridge with standard nut and carried substantially
It is different.Increasing for ridge is carried, rubbing surface increase produces actively impact to improving anti-loosening property.Further, since eccentric angle
Effect, is more screwed to nut end, eccentric force is bigger, and the screw thread engagement of fitted bolt and nut is closer, and nut thread is as voussoir
Bolt thread tooth bottom region is withstood, the wedging power of bias is generated, further realizes locking.
(3) in addition, the arc rib set on nut seat, considerably increases the friction between nut and workpiece to be tightened
Power.
The invention employs multiple locking design, on the basis of hexagon nut with collar, is unloaded by eccentric angle, annular
The design for carrying groove and arc rib carries out locking step by step, and product is locking reliable.The nut easy making process of the invention, structure compared with
To be simple, cost is relatively low, with significant economy and wide application prospect.
Brief description of the drawings
Fig. 1 is a kind of cross-sectional view of embodiment of the invention；
Fig. 2 is that direction structure schematic diagram is looked up in the invention.
Wherein, 1- screwed holes；2- bearing-surfaces；3- head ends；4- bias angles；5- oblique angles；6- annular sprons；7- rings
Shape concave station；8- ribs.
Embodiment
The invention is further described below by with reference to accompanying drawing.
As shown in Figure 1-2, by taking flange hex nut as an example, nut is central for a kind of preferred embodiment of the invention structure
Provided with screwed hole 1, the perpendicular bisector of the axis of thread of the screwed hole 1 and the bearing-surface 2 of the nut has an eccentric angle 4,
The bearing-surface 2 of the nut is provided with the annular spron 6 coaxial with the perpendicular bisector of the bearing-surface 2 extended internally.
The section of the annular spron 6 is in class right-angled trapezium, in the class right-angled trapezium, in two sides being parallel to each other
Shorter one extends to the acute angle portion of the nut interior in circle in nut center, the class right-angled trapezium
Angle.The depth that the annular spron extends into nut is the 1/3-4/5 of the height of nut, and the annular spron two is flat
The width on row side is the 1/6 of flange hex nut opposite side size, its extend to acute angle portion of the nut interior in 30 ° ±
1°。
The head end 3 of the nut is a tapered plane, i.e., with the bearing-surface 2 at an angle, the head end 3
Oblique angle 5 is equal with the eccentric angle 4.
The eccentric angle 4 is no more than 2 °, preferably 1 ° ± 0.5 °.
On the bearing-surface 2 of the nut, the part between the screwed hole 1 and annular spron 6 is additionally provided with and two
The annular concave platform 7 of person's connection, prevents bearing-surface when annular spron plays a role positioned at its annular inner portion because friction is made
With and impact effect.
Part on the bearing-surface 2 of the nut positioned at the annular periphery of spron 6 is provided with around the uniform rib in center
8, the rib 8 is curved in the overlook direction of bearing-surface 2.
The invention makes spiral shell in use, fitted bolt is screwed by the screwed hole 1 of nut to inside workpiece to be tightened
One end of female bearing-surface 2 props up workpiece surface to be tightened, until fastening completely.
The preferred embodiment of the invention is the foregoing is only, creation is not intended to limit the invention, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc. should be included in the invention
Protection domain within.
Claims (7)
1. a kind of annular groove eccentric nut, the nut center is provided with screwed hole, the axis of thread of the screwed hole and the nut
The perpendicular bisector of bearing-surface there is an eccentric angle, the bearing-surface of the nut be provided with extend internally with the bearing-surface
The coaxial annular spron of perpendicular bisector；The section of the annular spron is in class right-angled trapezium, in the class right-angled trapezium, mutually
Shorter one extends to the nut interior in nut center, the class right-angled trapezium in two parallel sides
Acute angle portion is rounded；The depth that the annular spron extends into nut is the 1/3-4/5 of the height of nut, the ring
The Breadth Maximum of shape spron for inner nut edge size 1/6 and it is following.
2. a kind of annular groove eccentric nut according to claim 1, it is characterised in that the head end of the nut is one oblique
Plane, the oblique angle of the head end is equal with the eccentric angle.
3. a kind of annular groove eccentric nut according to claim 1, it is characterised in that the eccentric angle is no more than 2 °.
4. a kind of annular groove eccentric nut according to claim 3, it is characterised in that the eccentric angle is 1 ° ± 0.5 °.
5. a kind of annular groove eccentric nut according to claim 1, it is characterised in that on the bearing-surface of the nut, be located at
Part between the screwed hole and annular spron is additionally provided with the annular concave platform connected with the two.
6. a kind of annular groove eccentric nut according to claim 1, it is characterised in that be located at institute on the bearing-surface of the nut
The part for stating annular spron periphery is provided with around the uniform rib in center.
7. a kind of annular groove eccentric nut according to claim 6, it is characterised in that the rib is in bearing-surface overlook direction
It is upper curved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541122.6A CN105090219B (en) | 2015-08-28 | 2015-08-28 | A kind of annular groove eccentric nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541122.6A CN105090219B (en) | 2015-08-28 | 2015-08-28 | A kind of annular groove eccentric nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105090219A CN105090219A (en) | 2015-11-25 |
| CN105090219B true CN105090219B (en) | 2017-08-29 |
Family
ID=54571318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510541122.6A Active CN105090219B (en) | 2015-08-28 | 2015-08-28 | A kind of annular groove eccentric nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090219B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757699A (en) * | 2018-06-16 | 2018-11-06 | 荆门创佳机械科技有限公司 | A kind of interlockable stop nut |
| CN108425934B (en) * | 2018-06-21 | 2021-03-09 | 荆门市佰思机械科技有限公司 | Interlocking anti-loose bolt and nut |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110433A (en) * | 2013-04-17 | 2014-10-22 | 江苏浩瀚汽车标准件有限公司 | Automatic locking anti-loosening nut |
| CN204186754U (en) * | 2014-10-08 | 2015-03-04 | 宁波市鄞州广翔机械制造有限公司 | A kind of eccentric nut with self-locking function |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3346288A1 (en) * | 1983-12-21 | 1985-07-04 | Susumu Neyagawa Osaka Yamauchi | Self-locking nut, and a method for its production |
| JPH01176808A (en) * | 1987-12-28 | 1989-07-13 | Akira Yamauchi | Locking nut and bolt |
| CN200993149Y (en) * | 2006-12-22 | 2007-12-19 | 魏民 | Eccentric self-locking nut |
| CN203809468U (en) * | 2014-04-15 | 2014-09-03 | 郑州科润机电工程有限公司 | Lifting hook nut |
| CN204809468U (en) * | 2015-03-31 | 2015-11-25 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN204961539U (en) * | 2015-08-28 | 2016-01-13 | 航天精工股份有限公司 | Annular eccentric nut |
-
2015
- 2015-08-28 CN CN201510541122.6A patent/CN105090219B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110433A (en) * | 2013-04-17 | 2014-10-22 | 江苏浩瀚汽车标准件有限公司 | Automatic locking anti-loosening nut |
| CN204186754U (en) * | 2014-10-08 | 2015-03-04 | 宁波市鄞州广翔机械制造有限公司 | A kind of eccentric nut with self-locking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105090219A (en) | 2015-11-25 |
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