CN110657152B - Self-locking anti-loose fastener - Google Patents
Self-locking anti-loose fastener Download PDFInfo
- Publication number
- CN110657152B CN110657152B CN201910873121.XA CN201910873121A CN110657152B CN 110657152 B CN110657152 B CN 110657152B CN 201910873121 A CN201910873121 A CN 201910873121A CN 110657152 B CN110657152 B CN 110657152B
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- Prior art keywords
- limiting
- nut
- locking
- bolt
- sleeve
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- 238000002425 crystallisation Methods 0.000 description 9
- 230000008025 crystallization Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
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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
- F16B39/02—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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention relates to a self-locking anti-loose fastener which is suitable for the occasions of nut and bolt fastener products. Known anti-loose fasteners are a worldwide technical difficulty. The invention realizes that the locking part is kept in a state of being incapable of loosening through self-limiting. The product is by stop nut, spacing bolt, spacing cover locking nut part owner and becomes characterized by: a limit pin is processed at the front end of the limit bolt; the inner side of one end of the limiting nut is provided with a thread matched with the limiting bolt, the inner side of the other end of the limiting nut is provided with a structure matched with a contact surface of the limiting sleeve and the limiting pin, and the outer side of the limiting nut is also provided with a structure matched with a locking thread of the limiting sleeve and a side wall gap of the limiting sleeve; the outer side is also provided with a structure of a limiting sleeve locking nut; when the locked part is locked with the limiting nut through the limiting bolt, the limiting sleeve locking nut is locked again, and the limiting sleeve locking nut is not easily loosened due to the fact that the limiting sleeve locking nut is not directly acted by external force, and the indirect limiting nut is also not easily loosened, so that the purpose of preventing looseness of the fastener is achieved.
Description
Technical Field
The invention relates to a self-locking anti-loose fastener which is suitable for various occasions and shaft locking and limiting of the use of fastener products such as nuts, bolts, studs, screws and the likeBitIn the application field.
Background
At present, the known anti-loose fasteners improve the locking and anti-loose functions of the fasteners by increasing positive pressure between thread contact surfaces and adopting a method of split structure limiting. Because the uncertain factors of the work of the fastened product are many and the physical characteristics of the material are complicated and diversified, the uncertain factors of the anti-loosening function of the existing anti-loosening fastener are obvious.
Disclosure of Invention
The invention provides a self-locking anti-loose fastener, which can complete the locking part to be kept in a state incapable of being loosened through self-limiting, aiming at the technical defects of the existing fastener products.
The technical scheme adopted by the invention for solving the technical problems is as follows: auto-lock check fastener comprises stop nut (1), spacing bolt (3), stop collar lock nut (2) essential element, characterized by: the front end of the limiting bolt (3) is processed with a structure of a limiting pin (3-2); the inner side of one end of the limiting nut (1) is provided with a thread structure matched with the limiting bolt (3), the inner side of the other end is provided with a structure matched with a contact surface of the limiting sleeve (1-3) and the limiting pin (3-2), the outer side of the other end is provided with a limiting sleeve locking thread (1-4), and the other end is also provided with a structure of a limiting sleeve side wall gap (1-2); the outer side of the other end is provided with a structure of a limit sleeve locking nut (2) matched with the limit sleeve locking thread (1-4); the structure of the self-locking anti-loose fastener is formed, when the locked part is locked by the locking part through the limiting bolt (3) and the limiting nut (1), the limiting nut (1) is locked by the limiting sleeve locking nut (2) to enable the contact surface between the limiting sleeve (1-3) and the limiting pin (3-2) to be tightly locked, and the limiting sleeve locking nut (2) is not directly acted by external force, so that the limiting sleeve locking nut (2) is not easy to loose, the indirect limiting nut (1) is not easy to loose, and the self-locking anti-loose fastener achieves the anti-loose purpose.
The invention has the beneficial effects that: the self-locking anti-loose fastener not only solves the technical difficulty of locking and anti-loose of common fasteners, but also solves the problem that the prior anti-loose fasteners such as aerospace, aviation, high-speed rail, bridge, iron tower and the like depend on import, and the series products of the self-locking anti-loose fasteners are in the leading level in the world technically.
Drawings
Fig. 1 is a front view of the main part of the limit nut (1) of the invention, in full section.
Fig. 2 is a front view of the main part of the stop collar lock nut (2) of the present invention in full section.
Fig. 3 is a front view of the main part of the limit bolt (3) of the present invention.
In the figure, the number 1 is a limit nut; 1-1, a limit pin transition annular groove; 1-2, a gap is formed in the side wall of the limiting sleeve; 1-3, a limit sleeve; 1-4, locking the thread by a limit sleeve; 2. the nut is locked by the limiting sleeve; 3. a limit bolt; 3-1, processing a process groove on the bolt; 3-2, a limit pin.
Detailed Description
In the fastener series products, the production process of processing products should be changed due to different fastener working conditions. The specific embodiment is as follows:
in the preferred embodiment 1, the locking and anti-loose fastener with low product quality requirement is processed: in the processing of the embodiment 1, a screw rod of the existing bolt is lengthened, and a limiting pin (3-2) with a circular truncated cone structure with a certain inclination angle is processed at the front end of the screw rod by adopting an extruding or cutting method, so that the processing of the limiting bolt (3) is completed; in the process of processing the limit nut (1), the height of the existing nut is increased, and the limit nut (1) is processed and finished by a method of extrusion and mechanical cutting. Wherein, the side wall gap (1-2) of the limiting sleeve is processed by laser cutting; processing the number of the side wall gaps (1-2) of the limiting sleeve so as to meet the requirement that the limiting pin (3-2) can pass through the limiting sleeve (1-3) as a reference; the processing inclination angle of the limiting sleeve (1-3) is kept the same as the processing inclination angle of the limiting pin (3-2); the processing structure of the limiting sleeve locking thread (1-4) on the outer side of the limiting nut (1) and the limiting sleeve locking nut (2) are kept to have a locking function. In the processing of the stop collar lock nut (2), the processed structure can press the contact surface of the stop pin (3-2) and the stop collar (1-3) to a tight state when working. The locking and looseness-preventing functions of the looseness-preventing fastener are realized.
In the preferable embodiment 2, under the conditions of large vibration force and high vibration frequency of the locked part, the locking part cannot meet the design requirement of the product only by the structural limit of the locking part, and how to further improve the locking and anti-loosening function of the product is realized in the embodiment 2 by further producing and processing the locking part, after the processing of each part is completed by adopting the processing method of the embodiment 1, the limit bolt (3) is used for generating a certain amount of hard crystallization points on the outer surfaces of the threads of the limit pin (3-2) and the limit bolt (3) of the limit bolt (3) by a heat treatment method, so that the hardness of the generated hard crystallization points is obviously improved compared with the hardness of the peripheries of the hard crystallization points, when the surfaces between the contact surfaces of the limit bolt (3) and the limit nut (1) are in close contact, the pressure generated at the hard crystallization points is greater than the pressure generated between the contact surfaces of the peripheries of the hard crystallization points, therefore, the surface elastic deformation value between the contact surfaces at the hard crystallization points is larger than the surface elastic deformation value between the peripheral contact surfaces at the hard crystallization points, so that the roughness formed by the elastic deformation of the surface between the contact surfaces of the limit bolt (3) and the limit nut (1) is obviously improved, the surface friction coefficient between the contact surfaces of the limit bolt (3) and the limit nut (1) is increased, the anti-loosening function of the self-locking anti-loosening fastener is obviously improved, and the product quality of the self-locking anti-loosening fastener is further improved. The hard crystallization point is generated on the surface of the limit bolt (3) by adopting a heat treatment method of laser instant point heating and instant cooling, and the method for generating the hard crystallization point can be completed by adopting main heat treatment processing technologies of powder metallurgy, blasting metallurgy and electrochemical treatment according to different materials of the limit bolt (3) and different requirements on locking and looseness prevention.
Claims (2)
1. Auto-lock check fastener comprises stop nut (1), spacing bolt (3), stop collar lock nut (2) essential element, characterized by: the front end of the limiting bolt (3) is processed with a structure of a limiting pin (3-2); the inner side of one end of the limiting nut (1) is provided with a thread structure matched with the limiting bolt (3), the inner side of the other end is provided with a structure matched with a contact surface of the limiting sleeve (1-3) and the limiting pin (3-2), the outer side of the other end is provided with a limiting sleeve locking thread (1-4), and the other end is also provided with a structure of a limiting sleeve side wall gap (1-2); the outer side of the other end is provided with a structure of a limit sleeve locking nut (2) matched with the limit sleeve locking thread (1-4); the structure of the self-locking anti-loose fastener is formed, when a locked part is locked by a limiting bolt (3) and a limiting nut (1), the limiting nut (1) is locked by a limiting sleeve locking nut (2), so that the contact surface between the limiting sleeve (1-3) and a limiting pin (3-2) is tightly locked, and the limiting sleeve locking nut (2) is not easy to loose and the indirect limiting nut (1) is not easy to loose because the limiting sleeve locking nut (2) is not directly acted by external force; because a limiting sleeve side wall gap (1-2) is processed at one end of a limiting sleeve (1-3) of the limiting nut (1), the deformation value generated by the limiting sleeve (1-3) is increased, and the largest sectional area of the limiting pin (3-2) can be ensured to pass through the smallest sectional area of the limiting sleeve (1-3); the tail end sectional area of the inclination angle direction of the limiting pin (3-2) of the limiting bolt (3) is larger than the initial inner end sectional area, the inclination angle direction of the limiting pin (3-2) of the limiting bolt (3) is opposite to the inclination direction of the limiting sleeve locking thread (1-4) on the outer side of the limiting nut (1), and the processing inclination angle of the limiting sleeve (1-3) in the limiting nut (1) is kept the same as the processing inclination angle of the limiting pin (3-2) of the limiting bolt (3).
2. The self-locking loose-proof fastener of claim 1, wherein: when the limiting nut (1) has an axial movement trend, the limiting pin (3-2) is tightly locked with the contact surface of the limiting sleeve (1-3) to form a circular table top structure, so that the axial movement of the limiting nut (1) is stopped, and the self-limiting function is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/000181 WO2021051716A1 (en) | 2019-08-19 | 2020-08-12 | Self-locking and anti-loosening fastener |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812522 | 2019-08-19 | ||
| CN2019108125224 | 2019-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110657152A CN110657152A (en) | 2020-01-07 |
| CN110657152B true CN110657152B (en) | 2021-08-13 |
Family
ID=69037096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910873121.XA Active CN110657152B (en) | 2019-08-19 | 2019-09-16 | Self-locking anti-loose fastener |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110657152B (en) |
| WO (1) | WO2021051716A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657152B (en) * | 2019-08-19 | 2021-08-13 | 冷光君 | Self-locking anti-loose fastener |
| AU2021441323A1 (en) | 2021-04-23 | 2023-10-19 | Techtronic Cordless Gp | Force amplified fastener for power tool implements |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033393A (en) * | 1971-03-08 | 1977-07-05 | Eaton Corporation | Self-locking fastener |
| US4790703A (en) * | 1987-04-24 | 1988-12-13 | Wing George S | Prevailing torque fastener assembly |
| CN2082334U (en) * | 1990-08-07 | 1991-08-07 | 湖南省常德电业局超高压管理所 | Anti-loose and anti-theft nut |
| JPH1122191A (en) * | 1997-06-30 | 1999-01-26 | Toyama Hatsujo Seisakusho:Kk | Interlocking device making use of bar-shaped or linear bearing member |
| CN1263215A (en) * | 1999-02-08 | 2000-08-16 | 阿泰克－维斯两合公司 | Conical bolt connection of coupling for friction plate group |
| CN201455333U (en) * | 2009-06-26 | 2010-05-12 | 罗信精密零件(上海)有限公司 | bidirectional collet |
| CN201779120U (en) * | 2010-09-19 | 2011-03-30 | 李德炳 | Threefold stable anti-looseness expansion screw |
| CN204591951U (en) * | 2015-05-12 | 2015-08-26 | 凯达铁建电气化铁路器材有限公司 | Self locking anti-loose nut |
| CN106640914A (en) * | 2016-12-12 | 2017-05-10 | 华和平 | Radial locking anti-loose retreating-stopping nut |
| CN208330961U (en) * | 2018-05-21 | 2019-01-04 | 廖炳钢 | Combined self stop nut |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1519836A (en) * | 1923-12-14 | 1924-12-16 | Albert D Herschler | Nut lock |
| US3390711A (en) * | 1967-08-09 | 1968-07-02 | Electric Regulator Corp | Screw-lock assembly |
| CN201262180Y (en) * | 2008-09-02 | 2009-06-24 | 汤明 | Alloy locking screw pair |
| DE102009023402A1 (en) * | 2009-05-29 | 2010-12-02 | Esk Ceramics Gmbh & Co. Kg | Suspension for the production of a friction-increasing layer, shaped article with such a friction-increasing layer, process for its preparation and its use |
| CN201723560U (en) * | 2010-08-12 | 2011-01-26 | 贵州航天精工制造有限公司 | Axial deformation self-locking nut |
| CN110657152B (en) * | 2019-08-19 | 2021-08-13 | 冷光君 | Self-locking anti-loose fastener |
-
2019
- 2019-09-16 CN CN201910873121.XA patent/CN110657152B/en active Active
-
2020
- 2020-08-12 WO PCT/CN2020/000181 patent/WO2021051716A1/en not_active Ceased
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033393A (en) * | 1971-03-08 | 1977-07-05 | Eaton Corporation | Self-locking fastener |
| US4790703A (en) * | 1987-04-24 | 1988-12-13 | Wing George S | Prevailing torque fastener assembly |
| CN2082334U (en) * | 1990-08-07 | 1991-08-07 | 湖南省常德电业局超高压管理所 | Anti-loose and anti-theft nut |
| JPH1122191A (en) * | 1997-06-30 | 1999-01-26 | Toyama Hatsujo Seisakusho:Kk | Interlocking device making use of bar-shaped or linear bearing member |
| CN1263215A (en) * | 1999-02-08 | 2000-08-16 | 阿泰克－维斯两合公司 | Conical bolt connection of coupling for friction plate group |
| CN201455333U (en) * | 2009-06-26 | 2010-05-12 | 罗信精密零件(上海)有限公司 | bidirectional collet |
| CN201779120U (en) * | 2010-09-19 | 2011-03-30 | 李德炳 | Threefold stable anti-looseness expansion screw |
| CN204591951U (en) * | 2015-05-12 | 2015-08-26 | 凯达铁建电气化铁路器材有限公司 | Self locking anti-loose nut |
| CN106640914A (en) * | 2016-12-12 | 2017-05-10 | 华和平 | Radial locking anti-loose retreating-stopping nut |
| CN208330961U (en) * | 2018-05-21 | 2019-01-04 | 廖炳钢 | Combined self stop nut |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021051716A1 (en) | 2021-03-25 |
| CN110657152A (en) | 2020-01-07 |
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