CN113819133A - A lock nut with S-type thread - Google Patents
A lock nut with S-type thread Download PDFInfo
- Publication number
- CN113819133A CN113819133A CN202111084886.9A CN202111084886A CN113819133A CN 113819133 A CN113819133 A CN 113819133A CN 202111084886 A CN202111084886 A CN 202111084886A CN 113819133 A CN113819133 A CN 113819133A
- Authority
- CN
- China
- Prior art keywords
- nut
- thread
- boss
- locking
- threads
- 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
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000004677 Nylon Substances 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16B39/22—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
- F16B39/30—Locking exclusively by special shape of the screw-thread
-
- 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
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
-
- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
本发明涉及锁紧螺母技术领域，具体的说是一种S型螺纹的锁紧螺母。一种S型螺纹的锁紧螺母，包括螺母，其特征在于：在螺母内侧轴向设有内螺纹，所述的内螺纹包括直螺纹及S螺纹，位于螺母中央上方的内侧设有S螺纹，S螺纹的上方及下方设有直螺纹；位于螺母底部连接凸台，凸台的中央设有通孔；位于螺母的下方设有铝垫圈。与现有技术相比，提供了一种S型螺纹的锁紧螺母，该螺纹采用改变当量摩擦角的技术实现锁紧功能，有效避免松脱，同时有铝垫圈，也能实现密封效果。
The invention relates to the technical field of locking nuts, in particular to a locking nut with S-shaped thread. An S-threaded locking nut, including a nut, is characterized in that: an inner thread is axially arranged on the inner side of the nut, the inner thread includes a straight thread and an S thread, and the inner side located above the center of the nut is provided with an S thread, There are straight threads above and below the S thread; a boss is located at the bottom of the nut, and a through hole is provided in the center of the boss; and an aluminum washer is located below the nut. Compared with the prior art, a locking nut with S-shaped thread is provided. The thread adopts the technology of changing the equivalent friction angle to realize the locking function, which can effectively avoid loosening. Meanwhile, the aluminum washer can also realize the sealing effect.
Description
Technical Field
The invention relates to the technical field of locking nuts, in particular to a locking nut with S-shaped threads.
Background
The anti-loose process of the present common fastener structure mainly comprises the anti-loose and friction anti-loose aspects of the structure, and the relatively common application is as follows: 1. the three-point locking nut or the opposite-side locking nut realizes locking by changing the shape of the internal thread, and is simple to operate. The disadvantages are that: the size matching shape is changed by pressing three points or pressing the opposite side, the sizes of the pressing points are uniform, and the situation that the locking torque is unqualified often occurs. 2. Nylon insert lock nut: the insert is made of metal materials and nylon materials, among various insert materials, the nylon materials are best in toughness and wear resistance and have good resilience and reusability, so that the number of the locknuts using the nylon inserts in the industry and the market is large, but the use temperature and the surface treatment process (such as a coating process) of the locknuts are limited by the use temperature of the nylon materials, the locknuts are used at-54-100 ℃, the nylon materials are softened and deformed at too high temperature, and the nylon materials are brittle and hard at too low temperature and are accelerated to age, so that the locking function is reduced.
In addition, neither of the above two nuts has a sealing function. The parts used at the connecting points of some oil pipes and water pipes need to be sealed by a sealing gasket, and the parts and the gasket are assembled separately during assembly, so that the operation is troublesome, and the risk of neglected assembly also exists.
Disclosure of Invention
The invention provides the locking nut with the S-shaped threads, aiming at overcoming the defects of the prior art, the structural interference of the meshing position is utilized, the friction is increased, the loosening of the nut is prevented, the triangular boss is designed on the tightening surface of the nut, the effect is that the contact surface is more stable, and the effective sealing of the aluminum gasket is ensured.
In order to realize the above-mentioned purpose, design a lock nut of S type screw thread, including the nut, its characterized in that: the inner side of the nut is axially provided with internal threads, the internal threads comprise straight threads and S threads, the inner side above the center of the nut is provided with the S threads, and the straight threads are arranged above and below the S threads; a boss is connected with the bottom of the nut, and a through hole is formed in the center of the boss; an aluminum washer is arranged below the nut.
The S threads are at least provided with 2 threads, and the S threads are sequentially and continuously arranged.
The boss is of a triangular panel structure, three edges of the outer edge of the boss are arc edges, and the thickness of the boss is 0.5 mm.
The nut and the boss are of an integral structure.
The diameter of the aluminum washer is larger than that of the nut, and the thickness of the aluminum washer is 1 mm.
Compared with the prior art, the locking nut with the S-shaped threads has the advantages that the locking function of the threads is realized by changing the equivalent friction angle, the loosening is effectively avoided, and meanwhile, the sealing effect can be realized by the aid of the aluminum washer.
The surface treatment method of the aluminum gasket is simple, only needs passivation treatment, is not easy to rust and has high cost performance.
Drawings
FIG. 1 is a sectional view of the structure of the present invention.
Fig. 2 is a side view of the structure of the present invention.
Fig. 3 is a perspective view of the nut structure.
FIG. 4 is a graph comparing the anti-loosening performance of the lateral vibration test.
Referring to fig. 1 to 3, 1 is a nut, 2 is a boss, 3 is an aluminum washer, 4 is an internal thread, 4-1 is a straight thread, and 4-2 is an S thread.
Detailed Description
The invention is further illustrated below with reference to the accompanying drawings.
As shown in fig. 1 to 3, an inner thread 4 is axially arranged on the inner side of the nut 1, the inner thread 4 comprises a straight thread 4-1 and an S thread 4-2, the S thread 4-2 is arranged on the inner side above the center of the nut 1, and the straight thread 4-1 is arranged above and below the S thread 4-2; the bottom of the nut 1 is connected with a boss 2, and the center of the boss 2 is provided with a through hole; an aluminum washer 3 is arranged below the nut 1.
The S threads 4-2 are at least provided with 2, and the S threads 4-2 are sequentially and continuously arranged.
The boss 2 is in a triangular panel structure, three edges of the outer edge of the boss 2 are arc edges, and the thickness of the boss 2 is 0.5 mm.
The nut 1 and the boss 2 are of an integral structure.
The diameter of the aluminum washer 3 is larger than that of the nut 1, and the thickness of the aluminum washer 3 is 1 mm.
And (3) comparing the processing technology:
1. pressing three points/opposite side type locking nuts: cold heading, tapping, three-point pressing/edge pressing, heat treatment and surface treatment.
The process has the defects that the stamping is carried out before the heat treatment, the stamping size is deformed due to the high heat treatment temperature, and the subsequent locking performance is influenced.
2. Nylon embedded lock nut: cold heading, tapping, heat treatment, surface treatment, riveting and pressing of lock plates and surface treatment.
The process has the defects that the coating is damaged when the locking plate is riveted, the corrosion resistance of the nut is influenced, the surface treatment is needed before riveting, the surface treatment is needed again after riveting, the cost is high, the surface treatment process is only limited to the process of the temperature which can be borne by the locking plate, and the selection is limited.
The invention relates to an S-shaped thread lock nut: when sealing is not required, the process is cold heading-tapping-heat treatment-surface treatment. The production process is simple, and the production efficiency is improved. If the locking plate needs to be sealed, the process is cold heading, tapping, heat treatment, surface treatment and gasket pressing. The gasket is only needed to slightly press the lock catch, and the original surface treatment coating cannot be damaged.
The anti-loosening experimental data of the S-shaped thread locking nut are shown in the table 1.
The anti-loosening effect is confirmed through the residual torque, and the detection result of the locknut with the specification of M8 × 1.25 shows that the residual torque of the S-shaped locking thread is not attenuated, a better locking function can be achieved, and the torque is more stable compared with other types of locking threads.
Table 1.
The anti-loosening performance is compared through a transverse vibration experiment, and as shown in fig. 4, after the transverse vibration experiment, the axial pretightening force retention rate of the S-shaped thread is over 80%.
Claims (5)
1. The utility model provides a lock nut of S type screw thread, includes the nut, its characterized in that: an internal thread (4) is axially arranged on the inner side of the nut (1), the internal thread (4) comprises a straight thread (4-1) and an S thread (4-2), the S thread (4-2) is arranged on the inner side above the center of the nut (1), and the straight thread (4-1) is arranged above and below the S thread (4-2); the bottom of the nut (1) is connected with a boss (2), and the center of the boss (2) is provided with a through hole; an aluminum washer (3) is arranged below the nut (1).
2. An S-thread lock nut as in claim 1, wherein: the S threads (4-2) are at least provided with 2, and the S threads (4-2) are sequentially and continuously arranged.
3. An S-thread lock nut as in claim 1, wherein: the boss (2) is of a triangular panel structure, three sides of the outer edge of the boss (2) are arc sides, and the thickness of the boss (2) is 0.5 mm.
4. An S-thread lock nut as in claim 1, wherein: the nut (1) and the boss (2) are of an integral structure.
5. An S-thread lock nut as in claim 1, wherein: the diameter of the aluminum washer (3) is larger than that of the nut (1), and the thickness of the aluminum washer (3) is 1 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084886.9A CN113819133A (en) | 2021-09-16 | 2021-09-16 | A lock nut with S-type thread |
| PCT/CN2021/123974 WO2023039971A1 (en) | 2021-09-16 | 2021-10-15 | Locking nut with s-shaped threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084886.9A CN113819133A (en) | 2021-09-16 | 2021-09-16 | A lock nut with S-type thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113819133A true CN113819133A (en) | 2021-12-21 |
Family
ID=78914666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111084886.9A Pending CN113819133A (en) | 2021-09-16 | 2021-09-16 | A lock nut with S-type thread |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113819133A (en) |
| WO (1) | WO2023039971A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB140186A (en) * | 1919-02-25 | 1920-03-25 | Grip Nut Co | Improvements in lock nuts and the method of constructing the same |
| GB1273146A (en) * | 1968-05-14 | 1972-05-03 | Ronald Ernest Hayden | Improvements relating to lock nuts |
| US20040184897A1 (en) * | 2002-08-12 | 2004-09-23 | Levey Kenneth R. | Threaded fastener particularly suited for plastics |
| CN205446342U (en) * | 2015-12-29 | 2016-08-10 | 北京汽车研究总院有限公司 | Combined nut |
| CN207246201U (en) * | 2017-08-18 | 2018-04-17 | 上海振高螺母有限公司 | A kind of variable-tooth type nut with left-right rotary screw thread |
| CN216199730U (en) * | 2021-09-16 | 2022-04-05 | 日泰（上海）汽车标准件有限公司 | Locking nut with S-shaped threads |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100523527C (en) * | 2004-04-21 | 2009-08-05 | 伊利诺斯器械工程公司 | Threaded fastener |
| CN207814189U (en) * | 2017-12-27 | 2018-09-04 | 朗福紧固科技（西安）有限公司 | Double-nut locking structure |
| CN212272791U (en) * | 2020-04-10 | 2021-01-01 | 湖南申亿机械应用研究院有限公司 | Gradual change formula threaded connection is vice |
| CN212657113U (en) * | 2020-06-27 | 2021-03-05 | 罗章平 | Self-locking nut assembly |
-
2021
- 2021-09-16 CN CN202111084886.9A patent/CN113819133A/en active Pending
- 2021-10-15 WO PCT/CN2021/123974 patent/WO2023039971A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB140186A (en) * | 1919-02-25 | 1920-03-25 | Grip Nut Co | Improvements in lock nuts and the method of constructing the same |
| GB1273146A (en) * | 1968-05-14 | 1972-05-03 | Ronald Ernest Hayden | Improvements relating to lock nuts |
| US20040184897A1 (en) * | 2002-08-12 | 2004-09-23 | Levey Kenneth R. | Threaded fastener particularly suited for plastics |
| CN205446342U (en) * | 2015-12-29 | 2016-08-10 | 北京汽车研究总院有限公司 | Combined nut |
| CN207246201U (en) * | 2017-08-18 | 2018-04-17 | 上海振高螺母有限公司 | A kind of variable-tooth type nut with left-right rotary screw thread |
| CN216199730U (en) * | 2021-09-16 | 2022-04-05 | 日泰（上海）汽车标准件有限公司 | Locking nut with S-shaped threads |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023039971A1 (en) | 2023-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4157725A (en) | Fastener and captive frusto-conical washer assembly | |
| US3125910A (en) | Kavalar | |
| US9080590B2 (en) | Threaded fastener and fastener system | |
| US5915902A (en) | Undeformed lock nut with slot | |
| US3295580A (en) | Fastener having concave locking fins | |
| US8491247B2 (en) | Fastener with improved torque bearing surface | |
| US6688988B2 (en) | Looking thread cold forming tool | |
| CN216199730U (en) | Locking nut with S-shaped threads | |
| CA1126063A (en) | Thread tapping form | |
| JP2019124355A (en) | Hybrid three-point drive fastener | |
| US4079487A (en) | Clamp assembly with locking feature | |
| US4341497A (en) | Prevailing torque bolt | |
| JPH08505925A (en) | Fastener and screw means used therefor | |
| CN113819133A (en) | A lock nut with S-type thread | |
| CN110792678A (en) | A structure that prevents the nut from loosening | |
| CN110529488A (en) | A kind of exhaust pipe spacer for bolt external member and its manufacturing method that high temperature resistant is anti-loosening | |
| CN105972033A (en) | Lock bolt for groove | |
| CN210769783U (en) | Nut anti-loosening composite washer | |
| CN211951127U (en) | Anti-loosening bolt with sawtooth structure | |
| US3975788A (en) | Method of forming a threaded female fastener | |
| CN211039344U (en) | Annular opening type nut | |
| CN2498395Y (en) | Lock bolt | |
| CN223868341U (en) | A type of double-sealing ring rust-proof hexagonal nut | |
| CN207975106U (en) | A kind of band tooth fastening hex nut | |
| US1945216A (en) | Nut lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |