CN110307239A - A kind of anti-loosening combination nut - Google Patents
A kind of anti-loosening combination nut Download PDFInfo
- Publication number
- CN110307239A CN110307239A CN201910737546.8A CN201910737546A CN110307239A CN 110307239 A CN110307239 A CN 110307239A CN 201910737546 A CN201910737546 A CN 201910737546A CN 110307239 A CN110307239 A CN 110307239A
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- China
- Prior art keywords
- nut
- recessed
- knurled
- rotary table
- screw 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
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- 230000000994 depressogenic effect Effects 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 230000006378 damage Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012958 reprocessing Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 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
- 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
- F16B39/02—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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention belongs to fastener areas, and in particular to a kind of anti-loosening combination nut.Including knurled nut (1) and recessed nut (2), the protrusion part of the knurled nut and the depressed section of the recessed nut are engaged, the identical internal screw thread of parameter is provided in knurled nut and recessed nut, it is characterized in that: the internal screw thread of the knurled nut and protrusion piece axis of partial common, the internal screw thread and depressed section of the recessed nut share an axis, the protrusion part of the knurled nut is dome platform (3), or the assembly (10) of cylinder and rotary table, the depressed section of the recessed nut is recessed rotary table (4), prolong axis direction and be provided with fluting (5) in protrusion part on the knurled nut, the knurled nut is provided with annular groove (6) in the bottom of protrusion part.The invention has the advantages that 1, using rubbing, locking and mechanical both locking modes realize never becoming loose, reliable performance；2, structure is simple, is convenient for manufacture and installs, is at low cost.
Description
Technical field
The invention belongs to fastener areas, and in particular to a kind of anti-loosening combination nut.
Background technique
Various machines and component be unable to do without fastener in being linked and packed, and still, fastener in the operating condition, may
Loosening is generated, especially in the case where vibration, impact, varying load and excessive temperature differentials, loosening is more also easy to produce or even nut is de-
It falls.Lead to the damage of component or whole equipment, disintegrate, or even leads to great mechanical accident or personal injury.
To solve loosening for fastener, since being born threaded fastener, many National Technical personnel have done a large amount of examination
Research is tested, it, can be in certain journey using the methods of spring washer, pin, nylon insertion, deformation screw thread, double nut, strength gluing knot
Alleviate the time that fastener voluntarily loosens on degree.But it cannot tackle the problem at its root.
Japanese Hadlock (hard-lock) company produces a nut for being known as " never becoming loose ", this nut packet
Knurled nut and recessed nut are included, the identical internal screw thread of parameter is provided in knurled nut and recessed nut.It is the screw thread using knurled nut
Axis and the axis of protrusion part have deviation, the generation when the protrusion part of knurled nut and the depressed section of recessed nut are engaged
Chock effect, is realized locking.The disadvantage is that difficulty of processing is high, cost is high, and bolt is easy fatigue fracture by shearing force.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of structures, and simple, cheap, performance can
It leans on, the anti-loosening combination nut convenient for manufacturing and installing.
The technical solution of the invention is as follows: a kind of anti-loosening combination nut, including knurled nut and recessed nut, the convex spiral shell
The depressed section of female protrusion part and the recessed nut is engaged, and it is identical interior that parameter is provided in knurled nut and recessed nut
Screw thread, it is characterised in that: the internal screw thread of the knurled nut and protrusion piece axis of partial common, the internal screw thread of the recessed nut with
Depressed section shares an axis, and the protrusion part of the knurled nut is the assembly of dome platform or cylinder and rotary table, described
The depressed section of recessed nut is recessed rotary table, and the protrusion on the knurled nut prolongs axis direction and is provided with fluting.
The protrusion part of the knurled nut prolongs axis direction, be evenly provided on the circumference of internal screw thread 2 flutings or
4 flutings or 6 flutings or 8 flutings.
The knurled nut is provided with annular groove in the bottom of fluting.
The angle of the dome platform bus and dome platform axis is less than or equal to the recessed rotary table bus and recessed rotary table axis
Angle.
The radius of dome platform bottom surface is greater than or equal to the radius of recessed rotary table bottom surface.
The height of the dome platform is less than or equal to the height of recessed rotary table.
The advantages of anti-loosening combination nut provided by the present invention, is:
1, never becoming loose, reliable performance are realized using both the locking and mechanical locking modes that rub；
2, bolt strained to be uniformly not likely to produce fatigue fracture；
2, structure is simple, is convenient for manufacture and installs, is at low cost, reusable.
Detailed description of the invention
Fig. 1 is the knurled nut outline drawing of the anti-loosening combination nut of the present invention；
Fig. 2 is the knurled nut structure chart of the anti-loosening combination nut of the present invention, is sectional view at the A-A of Fig. 1；
Fig. 3 is the recessed nut outline drawing of the anti-loosening combination nut of the present invention；
Fig. 4 is the recessed nut structure figure of the anti-loosening combination nut of the present invention, is sectional view at the B-B of Fig. 3；
Fig. 5 is the structure chart of the knurled nut and recessed nut of the anti-loosening combination nut of the present invention when bolt locks clamping of workpieces；
Fig. 6 is sectional view at the C-C of Fig. 5；
Fig. 7 is to protrude the knurled nut structure chart that part is the assembly of cylinder and rotary table；
Fig. 8 is M16 closely-pitched hexagonal fluting thin nut outside drawing；
Fig. 9 is M16 closely-pitched hexagonal flange nut outside drawing.
In figure: 1, knurled nut, 2, recessed nut, 3, dome platform, 4, recessed rotary table, 5, fluting, 6, annular groove, 7, bolt, 8,
Hold-down segment, 9, slotted line, 10, the assembly of cylinder and rotary table, 11, workpiece.
Specific embodiment
Fig. 1 to Fig. 6 describes one embodiment of the present of invention, as shown in Figures 1 to 6, the anti-loosening combination nut of the present invention,
Including knurled nut 1 and recessed nut 2.Knurled nut 1 includes nut main body and dome platform 3, and the top surface of dome platform 3 is knurled nut 1
One end face；Recessed nut 2 includes nut main body and recessed rotary table 4, and the bottom surface of recessed rotary table 4 is on an end face of recessed nut 2.Dome
Platform 3 is engaged with recessed rotary table 4, and the identical internal screw thread of parameter, the internal screw thread of knurled nut 1 are provided in knurled nut 1 and recessed nut 2
An axis is shared with dome platform 3, the internal screw thread of recessed nut 2 and recessed rotary table 4 share an axis, and the dome platform 3 of knurled nut 1 prolongs
Axis direction is evenly provided with 6 flutings 5 on the circumference of internal screw thread, and knurled nut 1 is provided with annular in the bottom of fluting 5
Groove 6.
For the sake of simplicity, knurled nut 1 is thin nut (as shown in Figure 8) conduct of being slotted using M16 closely-pitched hexagonal in the present embodiment
Substrate carries out reprocessing and is made, and reprocessing content is: 1, opening width with cutter (can also use wire cutting) in the end of fluting 5 is
The annular groove 6 of 0.6mm, groover rot diameter 18mm；2, it is slotting 30 ° of end-beveling of this side, the part that nut is chamfered
It forms a band to slot the dome platform 3 of 5 and internal screw thread, it is 4mm that the radius of 3 bottom surface of dome platform, which is 11mm, height,.Such design has
Two effects, first is the intensity for guaranteeing knurled nut 1, i.e., in the case where torsion is big, nut main body is not in fracture, damage
Phenomenon, second is that the dome platform 3 for having allowed chock to act on is easy to happen flexible deformation, so that the groove width of fluting 5 becomes smaller, is interior after deformation
The diameter of thread becomes smaller, and the internal screw thread of dome platform 3 can hold the external screw thread of bolt 7 tightly.
Recessed nut be using M16 closely-pitched hexagonal flange nut it is (as shown in Figure 9) as substrate to carry out reprocessing obtained, then plus
Work content is: 35 ° of chamfering at flange inner hole, and the part that nut is chamfered forms a recessed rotary table 4.The radius of recessed 4 bottom surface of rotary table
It is 11mm, the height of recessed rotary table 4 is 5mm.
Below against attached drawing, the locking principle of anti-loosening combination nut provided by the present invention is described as follows:
One, rub locking: comparative diagram 5, after the main body of knurled nut 1 is bonded workpiece 11 and is tightened, knurled nut 1 is relative to spiral shell
Bolt 7 is in relative static conditions.Recessed nut 2 is tightened, the side of the recessed rotary table 4 of recessed nut starts to compress the dome of knurled nut at this time
The side of platform 3.Since the dome platform 3 of knurled nut 1 is provided with fluting 5 and annular groove 6, and convex frustum cone side and screw thread axis
The angle of line is 30 °, and the angle of recessed 4 side of rotary table and screw thread central axes is 35 °, and 3 bottom surface radius of dome platform is 11mm, with recessed circle
The bottom surface radius of platform 4 is identical, so, it is original between the internal screw thread of dome platform 3 and the external screw thread of bolt 7 after recessed nut 2 is tightened
Fit clearance be eliminated, the internal screw thread at the top of dome platform 3 can be pressed on the external screw thread of bolt 7, and pressing force is very big, this
The total frictional force invented between the screw thread and bolt thread of anti-loosening combination nut is very big.
In addition, since 3 side of dome platform and recessed 4 side of rotary table form the effect of cone pressure and chock, 3 side of dome platform with it is recessed
The frictional force that the compression fit of 4 side of rotary table generates is also very big, so that knurled nut 1 and recessed nut 2 will not occur that phase occurs easily
Rotation, recessed nut 2 will not be loosened easily.
The friction of anti-loosening combination nut provided by the present invention is locking to lean on the two above-mentioned frictional force to realize.
Two, mechanical locking: comparative diagram 6, after the main body of knurled nut 1 is bonded workpiece 11 and tightens, knurled nut 1 is relative to spiral shell
Bolt 7 remains static.Recessed nut 2 is tightened, the dome platform 3 of the lateral surface compressing knurled nut 1 of the recessed rotary table 4 of recessed nut 2 is passed through
Side, since dome platform 3 is provided with fluting 5, and due to having annular groove 6, dome platform 3 and recessed 4 shape of rotary table in the bottom of fluting 5
At the effect of cone pressure and chock, so the internal screw thread of dome platform 3 can be pressed on the external screw thread of bolt 7, and pressing force is very big, makes
It obtains bolt 7 and generates certain flexible deformation, the screw thread that the screw thread at 3 top of dome platform can be pressed into bolt 7 forms hold-down segment 8, fluting 5
Locate the thread surface of bolt 7 not by pressure initiation slotted line 9, because hold-down segment 8 is different from the diameter of slotted line 9, that is to say, that
There are differences of height with slotted line 9 for hold-down segment 8.So dome platform 3 will not relatively rotate with bolt 7 under tight condition, this
Inventing anti-loosening combination nut also has the effect of that machinery is locking.
Fig. 7 describe protrusion part be cylinder and rotary table assembly 10 knurled nut structure, the radius of cylinder be less than or
Equal to the radius of recessed 4 bottom surface of rotary table, the assembly 10 of the cylinder and rotary table falls angle namely in cylinder edge, so that
Knurled nut processing is simpler, and the cooperation and locking principle and above-described embodiment with recessed nut are essentially identical.
When needing to dismantle workpiece 11, recessed nut 2 need to be first only screwed off, the mechanical anti-loose effect of knurled nut 1 disappears at this time, then
Workpiece 11 can be unclamped by screwing off knurled nut 1.
In above-described embodiment, the technology segment being not described in detail can refer to GB/T41, GB/T6177 and GB/T6181 standard
Technical requirement as defined in middle nut.
As seen from the above-described embodiment, the present invention on the dome platform 3 of knurled nut 1 by prolonging axis direction setting fluting 5
Method, is effectively utilized the action principle of cone pressure and chock, while realizing that friction is locking and mechanical locking both are locking
Mode.The present invention can achieve the effect that " never becoming loose " as the nut of Japan hard-lock, but the configuration of the present invention is simple,
Convenient for manufacturing and installing, it is at low cost, it is reusable.
Claims (6)
1. a kind of anti-loosening combination nut, including knurled nut (1) and recessed nut (2), the protrusion part of the knurled nut (1) and institute
The depressed section for stating recessed nut (2) is engaged, and is provided with the identical internal screw thread of parameter in knurled nut (1) and recessed nut (2),
It is characterized by: the internal screw thread of the knurled nut (1) and protrusion piece axis of partial common, the recessed nut (2) it is interior
Screw thread and depressed section share an axis, and the protrusion part of the knurled nut (1) is dome platform (3) or cylinder and rotary table
Assembly (10), the depressed section of the recessed nut (2) is recessed rotary table (4), and the protrusion on the knurled nut (1) prolongs axis
Line direction is provided with fluting (5).
2. anti-loosening combination nut according to claim 1, it is characterised in that: prolong the protrusion part of the knurled nut (1)
Axis direction is evenly provided with 2 flutings or 4 flutings or 6 flutings or 8 flutings on the circumference of internal screw thread.
3. anti-loosening combination nut according to claim 1, it is characterised in that: bottom of the knurled nut (1) in fluting (5)
Portion is provided with annular groove (6).
4. anti-loosening combination nut according to claim 1, it is characterised in that: dome platform (3) bus and dome platform
(3) angle (e) of axis is less than or equal to the angle (f) of recessed rotary table (4) bus and recessed rotary table (4) axis.
5. anti-loosening combination nut according to claim 1, it is characterised in that: the radius (d) of dome platform (3) bottom surface
More than or equal to the radius (D) of recessed rotary table (4) bottom surface.
6. anti-loosening combination nut according to claim 1, it is characterised in that: the height of the dome platform (3) be less than or
Equal to the height of recessed rotary table (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737546.8A CN110307239A (en) | 2019-08-08 | 2019-08-08 | A kind of anti-loosening combination nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737546.8A CN110307239A (en) | 2019-08-08 | 2019-08-08 | A kind of anti-loosening combination nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110307239A true CN110307239A (en) | 2019-10-08 |
Family
ID=68082225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910737546.8A Pending CN110307239A (en) | 2019-08-08 | 2019-08-08 | A kind of anti-loosening combination nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110307239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018105367A (en) * | 2016-12-24 | 2018-07-05 | 守弘 和田 | Lock nut |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004113744A1 (en) * | 2003-06-18 | 2004-12-29 | Japan Mechanical Engineering Co.,Ltd. | Loosening prevention structure for bolt and nut |
| CN105003518A (en) * | 2015-07-15 | 2015-10-28 | 蒋昆明 | Hub bolt component |
| CN106640914A (en) * | 2016-12-12 | 2017-05-10 | 华和平 | Radial locking anti-loose retreating-stopping nut |
| CN108775325A (en) * | 2018-08-03 | 2018-11-09 | 王平安 | Deformation type combines stop nut |
| CN108799304A (en) * | 2018-08-22 | 2018-11-13 | 董尊久 | A kind of Combined locknut |
| CN210461355U (en) * | 2019-08-08 | 2020-05-05 | 朱正唯 | Anti-loosening combined nut |
-
2019
- 2019-08-08 CN CN201910737546.8A patent/CN110307239A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004113744A1 (en) * | 2003-06-18 | 2004-12-29 | Japan Mechanical Engineering Co.,Ltd. | Loosening prevention structure for bolt and nut |
| CN105003518A (en) * | 2015-07-15 | 2015-10-28 | 蒋昆明 | Hub bolt component |
| CN106640914A (en) * | 2016-12-12 | 2017-05-10 | 华和平 | Radial locking anti-loose retreating-stopping nut |
| CN108775325A (en) * | 2018-08-03 | 2018-11-09 | 王平安 | Deformation type combines stop nut |
| CN108799304A (en) * | 2018-08-22 | 2018-11-13 | 董尊久 | A kind of Combined locknut |
| CN210461355U (en) * | 2019-08-08 | 2020-05-05 | 朱正唯 | Anti-loosening combined nut |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018105367A (en) * | 2016-12-24 | 2018-07-05 | 守弘 和田 | Lock nut |
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