CN110388367A - A kind of novel not Unscrewed screw - Google Patents
A kind of novel not Unscrewed screw Download PDFInfo
- Publication number
- CN110388367A CN110388367A CN201810353035.1A CN201810353035A CN110388367A CN 110388367 A CN110388367 A CN 110388367A CN 201810353035 A CN201810353035 A CN 201810353035A CN 110388367 A CN110388367 A CN 110388367A
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- CN
- China
- Prior art keywords
- nut
- screw
- loose
- main
- duplex
- 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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- 230000000750 progressive effect Effects 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 241000209094 Oryza Species 0.000 claims 2
- 235000007164 Oryza sativa Nutrition 0.000 claims 2
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 2
- 235000009566 rice Nutrition 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 210000000515 tooth Anatomy 0.000 description 22
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- 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
-
- 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
- F16B39/08—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a cap interacting with the nut, connected to the bolt by a pin or cotter pin
Abstract
A kind of novel not Unscrewed screw, the screw are mainly paid five nut, an anti-loosing device, duplex loose-proof sleeve component combinations by a diameter progressive screw, a main nut, one and are formed.This novel not Unscrewed screw, structure is simple, and anti-loosing effect is more satisfactory.It can be used on the special installations such as high revolving speed, high-speed motion, judder, high/low temperature variation, it can be achieved that high reliability, long-life requirement, without voluntarily loose or dislocation.
Description
Technical field
The present invention relates to a kind of special screw, especially a kind of special screw that will not be loosened.I.e. in regular service conditions
Under, it will not be because of high-speed rotation, judder, high temperature (in the range of its metal material keeps mechanical strength), low temperature is (in its gold
Belong to material to keep within the scope of mechanical strength) and indirect destruction under, and the voluntarily screw of loose or dislocation.
Background technique
Screw is the standardized element generally used in industrial equipment and product, and purposes is extremely wide.Screw structural is simple, makes
With conveniently, connection and fastening effect are played in various structural bodies.With the development of science and technology, many infant industry equipment,
Heavy equipment, and the special equipment used in particular circumstances, Yao Gao revolving speed, high-speed motion, judder, high/low temperature variation
Deng using under conditions of complicated.In face of these situations, normal screws not competent high reliability, the requirement of long-life,
Normal screws are under these use conditions, it may occur that voluntarily loosen, until falling off.Normal use that is light then influencing equipment, it is heavy then
It will cause great safety accident.In this regard, people have carried out a large amount of exploration and research, design and manufacture a plurality of types of not loose
Dynamic screw and screwed retaining ring, are made that different contributions thus.But until today, screw check takes off problem, is still puzzlement industry
One technical problem on boundary.
China's industrial manufacturing industry is in large scale, and a large amount of industrial equipment and product are all among upgrading, to highly reliable
Property the long-life safety set screw demand it is very big, domestic required high-grade safety set screw largely relies on import for a long time, serious to restrict
The developing steps of China's industrial technology, the novel not Unscrewed screw of the advanced reliable in quality of research structure be one in industrial circle
Item urgent task.
Summary of the invention
The novel not Unscrewed screw of one kind provided the purpose of the present invention is to solve the above problem, especially turns in height
Speed, high-speed motion, judder under the harsh complicated use condition of high/low temperature variation, are able to satisfy mechanical equipment and product
High reliability, long-life run without voluntarily loosening, the special screw of disabler, in order to achieve the above object, the present invention
It is simple to provide a kind of structure, and the novel not Unscrewed screw that anti-loosening effect is more satisfactory.It is provided by the present invention it is novel not
Unscrewed screw is mainly by a diameter progressive screw, and a main nut, one is paid nut, and an anti-loosing device and a duplex are locking
Set assembles.
The part of its securing objects of diameter progressive screw, including screw head is until at screw rod variable diameter, referred to as main paragraph, screw rod tail
Nut portion is paid in portion's installation, referred to as pays nut segment.The screw diameter of main paragraph, length and screw thread specification are the standard rule of screw
Lattice.Its national standard or other nonstandard specification systems for needing to specify in accordance with chinese national standard or international standard or client according to client
It makes, pays nut segment diameter than main paragraph diameter and reduce 1-10 millimeters, it is 1-10 millimeters big to pay nut Length Ratio pair nut thickness.It is main
Body section screw thread is opposite with nut segment rotation direction of thread is paid.That is the silk if main paragraph screw thread is positive, it is just anti-for paying nut segment screw thread
Silk, main paragraph silking rotate clockwise, pay nut segment screw thread and just rotate counterclockwise, vice versa.Screw head
Portion can be fabricated to various geometries, including but not limited to trigonocephalia, square head, five angle heads, turret head, bihexagonal head, flat
The various screw head dummys of head, round end, cup head, countersunk head type etc..Main nut and pair equal configuration standard nut of nut, main nut screw thread
Nut thread direction of rotation is opposite each other with paying.Main nut is mounted on the screw thread of main paragraph, is paid nut and is mounted on a pair nut segment
Screw thread on.
Anti-loosing device is a particular component of the novel not Unscrewed screw, and there are two types of styles, and one is a metals
There is a centre bore at laminated structure, center, and centre bore is standard according to nut segment diameter is paid, and center-hole diameter, which is greater than, pays nut segment
1-2 millimeters of diameter.It can be sleeved on and pay in nut segment, 1-5 millimeters of sheet thicknesses.Outside diameter is outer to angle square with pair nut
It is very little consistent, have within outer circle one week 3-12 long tooth, tooth is long to be greater than and pays 5-10 millimeters of nut thickness, the particular number of long tooth with it is selected
Nut exterior angle quantity it is consistent, such as select tetragonal nut, just set four long tooths on sheet anti-loosing device；Such as select hexagonal spiral shell
Mother just sets six long tooths on sheet anti-loosing device, and so on.Another anti-loosing device is to cover cap-type, so-called set cap-type,
It is exactly similar to a bottle cap, base has that a mesoporous is identical as the centre bore of sheet anti-loosing device, and the cylinder cross section of upper shield is
The multiangular cylinder at 3-12 angle, the particular number at angle are consistent with the quantity at selected nut exterior angle.Cylinder lumen to angle square
Very little to be greater than outer 1-2 millimeters of the diagonal-size of pair nut, energy will pay nut and be embedded among set cover cavity, make a pair nut cannot in upper shield
It move freely.
Duplex loose-proof sleeve can use metal material, engineering plastics or other appropriate materials systems according to the actual needs of client
Make, be the cylindrical body of one section of both ends open, inner cavity cross section is more interior angle cylindrical bodies at 3-12 angle, specific interior angle quantity
It is consistent with the exterior angle quantity of main nut, triangle nut is such as selected, angle number is 3 in duplex sleeve retainer body, hex nut is such as selected,
Angle number is 6 in duplex sleeve retainer body, and so on.Locking sleeve wall thickness 1-10 millimeters of duplex, the length of cylinder is equivalent to main spiral shell
Female thickness, which adds, pays the sum of nut thickness.
Steps are as follows for the installation method of the novel not Unscrewed screw: after screw rod to be passed through to the screw hole that need to connect fastening, installation
Gasket, then install main nut, main nut completes stubborn process eventually, qualified on inspection, and make one side from main nut to screw rod tail with
It is concordant at screw rod variable diameter, then sheet anti-loosing device is installed, then install and pay nut, and keep the exterior angle alignment sheet for paying nut locking
Notch between de- device long tooth is paid after a nut tightens, then pay 90 ° of nut bending for the long teeth directional on sheet anti-loosing device,
The corner angle that long tooth bending is formed then will cover duplex loose-proof sleeve with angle alignment outside main nut from the anti-loosing device of screw rod tail
Enter.Main nut is also all entangled always, outer end is concordant with nut outerplanar is paid, and inner end is as close as possible to main nut internal gasket, most
The long tooth of sheet anti-loosing device is longer than to the tip portions of duplex loose-proof sleeve afterwards, compresses the outer opening's edge bending of duplex loose-proof sleeve
180 °, the external port in duplex loose-proof sleeve is wrapped along upper.90 ° of the preparatory bending of the long tooth of sheet anti-loosing device can also be made sheet
Anti-loosing device becomes the anti-loosing device for being similar to set cap-type, will pay nut and be embedded, and became one the two and pacified
Dress.
It can will be paid in nut insertion upper shield in advance using set cap-type anti-loosing device, make to cover cap-type anti-loosing device and pay spiral shell
Mother is combined as a whole, and after main nut is screwed into place eventually, will pay nut with what set cap-type anti-loosing device was combined as a whole and pays nut
It is installed to and pays in nut segment.And the outer angle alignment of the outer corner angle and main nut of the locking dragging device of cap-type will be covered, then duplex is locking
Set is inserted in from set cap-type anti-loosing device, is always all inserted in main nut, is made duplex loose-proof sleeve inner end as close as possible to main spiral shell
Female internal gasket, one side is concordant outward with nut is paid for the external port of duplex loose-proof sleeve, will finally grow on set cap-type anti-loosing device
The short tooth of duplex loose-proof sleeve compresses 180 ° of outer opening's edge bending of duplex loose-proof sleeve, wraps the external port in duplex loose-proof sleeve along upper.
Detailed description of the invention:
With reference to the accompanying drawing, the invention will be further described
The novel not Unscrewed screw general structure schematic diagram of Fig. 1
1. main paragraph；2. pair nut segment；3. screw head；4. diameter progressive screw；5. main nut；
6. pair nut；7. anti-loosing device；8. duplex loose-proof sleeve；9. at variable diameter；10. gasket
Fig. 2 hexagon sheet anti-loosing device floor map
11. centre bore；12. planar section；13. long tooth；14. the tip portions of long tooth；15. the notch between long tooth
Fig. 3 covers cap-type anti-loosing device schematic diagram
16. mesoporous；17. base plane；18. sleeve part；19. short tooth
Hexangle type duplex loose-proof sleeve schematic diagram in Fig. 4
20. barrel；Hexagonal cavity in 21.；22. opening's edge
Specific embodiment
The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figure 1, a kind of novel not Unscrewed screw of the present invention is mainly by a diameter progressive screw (4), a main nut
(5), nut (6) are paid for one, an anti-loosing device (7), (8) five component compositions of a duplex loose-proof sleeve.So-called variable diameter spiral shell
Bar is the screw rod tail installation because there is (9) at a variable diameter to be known as from screw head at variable diameter main paragraph (1) on screw rod
The part for paying nut is known as paying the screw diameter of nut segment (2) main paragraph, and length and screw thread specification are the standard index of screw,
Main nut (5) is installed on the screw thread of diameter progressive screw (4).The diameter for paying nut segment (2) reduces 1-10 than the diameter of main paragraph (1)
Millimeter is paid nut (6) and is mounted on the screw thread for paying nut segment (2).Anti-loosing device (7) is mounted on main nut (5) and pays nut
(6) between, the long tooth (12) on anti-loosing device (7) can be 90 ° of bending, are tightly attached to and pay except nut (6).Duplex loose-proof sleeve (8)
It covers except anti-loosing device (7) and main nut (5).
Novel not Unscrewed screw is installed in an engineering, first ready diameter progressive screw (4) are passed through and need to connect tightly
Solid screw hole, the first step, install Upper gasket；Main nut (5) is installed on the screw thread of screw body section (1) by second step, is twisted eventually
Later, passed examination；Sheet anti-loosing device (7) is mounted at the variable diameter of screw rod (9) by third step；Spiral shell is paid in 4th step, installation
Female (6)；5th step is all tightly attached to the outside for paying nut for 90 ° of long tooth bending of sheet anti-drop device；6th step, installation are double
Join loose-proof sleeve (8), one side is concordant outward with nut (6) are paid for external port；7th step grows anti-loosing device (7) long tooth (13)
The tip portions (14) of the long tooth of duplex loose-proof sleeve (8) compress 180 ° of outer opening's edge bending of duplex loose-proof sleeve (8), make tip portions
(14) hard-pressed bale is in the outer opening's edge of duplex loose-proof sleeve (7).
Embodiment 2
Novel not Unscrewed screw is used in an engineering, selects set cap-type anti-loosing device.
Installation process is as follows:
Ready diameter progressive screw (4) are first passed through the screw hole for needing to connect fastening, then installed from screw rod tail by the first step
Upper gasket (10)；Main nut (5) is installed on the screw thread of screw body section (1) by second step, after twisting eventually, passed examination；The
Main nut (6) are embedded in the sleeve (18) of set cap-type anti-loosing device by three steps, are made to pay nut (6) and are covered the anti-loose dress of cap-type
It sets and is combined as a whole, they are co-mounted on the screw thread for paying nut segment (2)；4th step, by duplex loose-proof sleeve (8) from screw rod
Tail portion is installed to the outside of set cap-type anti-loosing device (7), duplex loose-proof sleeve (8) is inwardly promoted always, by main nut (5)
All entangle, make the inner end of duplex loose-proof sleeve (8) as close as possible to gasket (10), the outer end of duplex loose-proof sleeve with pay nut (6) to
Outer one side is concordant；5th step will cover the outer opening's edge bending of the compression of the short tooth (19) on cap-type anti-loosing device duplex loose-proof sleeve (8)
180 °, make short tooth (19) hard-pressed bale in the outer opening's edge of duplex loose-proof sleeve (7).
Such as dismantling the screw, steps are as follows:
The first step makes itself and original by short tooth of the packet in the anti-set of duplex (8) outer opening's edge (22) sharp (19) curved 180 ° to inflection
Faceted pebble on anti-loosing device (7) is concordant；Second step exits duplex loose-proof sleeve (8)；Third step is incorporated into integrated pay
Nut (6) and anti-loosing device (7) unload together；4th step unloads main nut (5), gasket (10)；5th step, exits screw rod
(4)。
Claims (5)
1. a kind of novel not Unscrewed screw, characterized in that the screw is mainly by a diameter progressive screw, and a main nut, one is paid
Nut, an anti-loosing device, a duplex loose-proof sleeve are composed, the diameter progressive screw, the part of securing objects, packet
Screw head is included until referred to as main paragraph, tail portion installation pay the part of nut, referred to as pay nut segment, main body at screw rod variable diameter
Nut diameter, length and the screw thread specification of section, are the standard specification of screw, according to the needs of client, in accordance with China national mark
Its national standard or the manufacture of nonstandard specification that quasi- or international standard or client specify, the diameter for paying nut segment are shunk than main paragraph diameter
1-10 millimeters, the length for paying nut segment is 1-10 millimeters bigger than the thickness for paying nut, main paragraph screw thread and a pair nut segment screw thread rotation
Contrary, main nut is mounted on the screw thread of main paragraph, is paid nut and is mounted on the screw thread for paying nut segment, described is anti-loose
There are two types of styles for device, and one is a metallic sheet-like formation, centre bore is standard according to nut segment diameter is paid, and can be sleeved on and pay spiral shell
On parent segment, outside diameter is consistent with the outer diagonal-size of nut is paid, and has within outer circle one week 3-12 long tooth, and tooth is long to be greater than a pair nut thickness
5-10 millimeters of degree, another kind are set cap-type structures, and for base mesoporous such as sheet, cap tube crosspiece face is 3-12 multiangular, cylinder
Deep is more than to pay 1-10 millimeters of nut thickness, and there is 3-12 short tooth at nozzle edge, and tooth is 1-10 millimeters long.The duplex loose-proof sleeve,
It is more interior angle cylindrical bodies of a 3-12.
2. the novel not Unscrewed screw of one kind according to claim 1, it is characterized in that the head of the screw rod of the screw can make
The style made include but is not limited to trigonocephalia, square head, five angle heads, turret head, bihexagonal head, round end, cup head, countersunk head type and
Multiple screws head dummy, the pattern that main nut can be manufactured with the shape for paying nut includes but is not limited to triangle, square, five jiaos
Shape, hexagon, dodecagon and a variety of styles, main nut screw thread are opposite with nut thread direction of rotation is paid.
3. the novel not Unscrewed screw of one kind according to claim 1, characterized in that sheet anti-loosing device, thickness 1-5 milli
Rice, center-hole diameter are greater than 1-2 millimeters of bar diameter of pair nut segment, use the structure of preceding similar circular gasket, outside one week of edge
There is 3-12 long tooth, the quantity of long tooth is consistent with the selected quantity at nut exterior angle, and the length of long tooth, which is greater than, pays nut thickness
5-10 millimeters, the cap tube interior angle quantity for covering cap-type anti-loosing device is consistent with nut exterior angle number is paid, and can will pay nut and be embedded in upper shield
It is interior to move freely.
4. the novel not Unscrewed screw of one kind according to claim 1, characterized in that duplex loose-proof sleeve can be according to practical need
It wants, metal material can be used, engineering plastics or other materials production, the shape of hollow cavity are matched with main nut shape, including
But it is not limited to triangle, square, pentagon, hexagon, dodecagon and other various shapes.The thickness 1-10 milli of barrel
Rice, the length of cylinder are equivalent to main nut thickness and add the sum of pair nut thickness.
5. the novel not Unscrewed screw of one kind according to claim 1, characterized in that in screw installation, first install master
Nut, and it is concordant at screw rod variable diameter to the one side of screw rod tail to make main nut, then installs sheet anti-loosing device, then installs and pay
Nut makes to pay the notch between the exterior angle alignment sheet anti-loosing device long tooth of nut, then by the long tooth of sheet anti-loosing device
To paying 90 ° of nut bending, long tooth bending formed corner angle will with angle alignment outside main nut, then by duplex loose-proof sleeve from anti-loosing device
On be inserted in, main nut is also all entangled always, outer end with pay nut it is concordant, finally the long tooth of sheet anti-loosing device is longer than
180 ° of the tip portions bending of duplex loose-proof sleeve is wrapped in the external port of duplex loose-proof sleeve, can also be by sheet anti-loosing device
90 ° of the preparatory bending of long tooth will be paid nut and be embedded, is combined as a whole and installed, can be pre- using set cap-type anti-loosing device
It will first pay in nut insertion upper shield, and make to cover cap-type anti-loosing device and pay nut to be combined as a whole, install after paying nut, make to cover
The outer corner angle of cap-type anti-loosing device and the outer angle alignment of main nut, then duplex loose-proof sleeve is covered from set cap-type anti-loosing device
Enter, be always all inserted in main nut, making the external port of duplex loose-proof sleeve with nut is paid, one side is concordant outward, will finally cover cap-type
180 ° of short tooth bending on anti-loosing device is wrapped in the external port of duplex loose-proof sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353035.1A CN110388367B (en) | 2018-04-19 | 2018-04-19 | Novel non-loose screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353035.1A CN110388367B (en) | 2018-04-19 | 2018-04-19 | Novel non-loose screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110388367A true CN110388367A (en) | 2019-10-29 |
| CN110388367B CN110388367B (en) | 2022-12-20 |
Family
ID=68283791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810353035.1A Active CN110388367B (en) | 2018-04-19 | 2018-04-19 | Novel non-loose screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388367B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US753415A (en) * | 1904-03-01 | Nut-look | ||
| US850665A (en) * | 1906-09-29 | 1907-04-16 | Howard E Marsch | Nut-lock. |
| CN2289897Y (en) * | 1997-01-27 | 1998-09-02 | 焦勃 | Anti-loosing washer |
| CN201013719Y (en) * | 2007-02-14 | 2008-01-30 | 刘红群 | Self-tightening type anti-drop anti-theft screw |
| CN202251362U (en) * | 2011-09-30 | 2012-05-30 | 中国石油天然气集团公司 | Bolt looseness prevention device |
-
2018
- 2018-04-19 CN CN201810353035.1A patent/CN110388367B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US753415A (en) * | 1904-03-01 | Nut-look | ||
| US850665A (en) * | 1906-09-29 | 1907-04-16 | Howard E Marsch | Nut-lock. |
| CN2289897Y (en) * | 1997-01-27 | 1998-09-02 | 焦勃 | Anti-loosing washer |
| CN201013719Y (en) * | 2007-02-14 | 2008-01-30 | 刘红群 | Self-tightening type anti-drop anti-theft screw |
| CN202251362U (en) * | 2011-09-30 | 2012-05-30 | 中国石油天然气集团公司 | Bolt looseness prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110388367B (en) | 2022-12-20 |
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