CN112983961A - Anti-loose nut - Google Patents
Anti-loose nut Download PDFInfo
- Publication number
- CN112983961A CN112983961A CN202110386198.1A CN202110386198A CN112983961A CN 112983961 A CN112983961 A CN 112983961A CN 202110386198 A CN202110386198 A CN 202110386198A CN 112983961 A CN112983961 A CN 112983961A
- Authority
- CN
- China
- Prior art keywords
- thread
- loosening
- locknut
- nut body
- form angle
- 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
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 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
- F16B37/00—Nuts or like thread-engaging members
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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
Abstract
The invention discloses a locknut which comprises a nut body and a flange surface, wherein the nut body is connected to the upper part of the flange surface, and the nut body and the flange surface are integrally formed; the locknut is axially provided with a threaded hole and radially provided with a tool withdrawal groove; the thread at the upper end of the tool withdrawal groove is provided with a locking thread, and the thread at the lower end of the tool withdrawal groove is provided with a common thread; a thread form angle alpha is arranged between two adjacent thread sides of the anti-loosening thread, and a thread form angle beta is arranged between two adjacent thread sides of the common thread. The anti-loosening nut has an integrated structure, is convenient to produce and process, has reliable performance, reduces the angle of the tooth form angle of the anti-loosening thread, can increase the friction force between the anti-loosening nut and the bolt, and plays a role in anti-loosening and locking.
Description
Technical Field
The invention relates to the technical field of mechanical fasteners, in particular to a locknut.
Background
In the design of the connecting part of mechanical equipment, a fastening mode of combining a bolt and a nut is mostly used, and the connecting mode has the advantages of low cost, flexible installation and wide application range. However, this type of connection can become loose or even fall out when the equipment is subjected to severe vibration, resulting in equipment failure, and many major quality safety failures are caused by the loosening of small fasteners. In order to solve the problem of loosening of the fastener, common methods comprise adding a gasket, a pin, chemical glue, a locking plate and the like, but the method only has the effect of temporarily solving the problem and has unstable performance. The existing locknut technology comprises double-nut locknut technology, self-locking nut technology of the United states Dett company, Tang's thread technology and the like, most of the locknuts are complex in structure, multiple in locknut parts and high in processing cost.
Disclosure of Invention
The invention aims to solve the technical problems and provides a locknut.
In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: the utility model provides a locknut, includes nut body and flange face, its characterized in that: the nut body is connected to the upper part of the flange surface, and the nut body and the flange surface are integrally formed; the locknut is axially provided with a threaded hole and radially provided with a tool withdrawal groove; the thread at the upper end of the tool withdrawal groove is provided with a locking thread, and the thread at the lower end of the tool withdrawal groove is provided with a common thread; a thread form angle alpha is arranged between two adjacent thread sides of the anti-loosening thread, and a thread form angle beta is arranged between two adjacent thread sides of the common thread.
Preferably: the tooth form angle alpha of the anti-loosening thread is set to be 55-58 degrees.
Preferably: the common thread form angle beta is set to 60 deg..
Preferably: the screwing length of the anti-loosening screw thread is 1/3-1/4 of the screwing length of the nut body.
Compared with the traditional structure, the invention has the beneficial effects that:
1. the locknut is of an integrated structure, novel in structure, convenient to produce and process, reliable in performance and low in production cost;
2. the angle of the tooth form angle of the anti-loosening thread is reduced, so that the friction force between the anti-loosening nut and the bolt can be increased, and the anti-loosening and locking effects are achieved.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view of the portion A of the present invention.
In the figure: 1. the nut comprises a nut body, 2 parts of a flange surface, 3 parts of common threads, 4 parts of anti-loosening threads and 5 parts of a tool withdrawal groove.
Detailed Description
The present invention is further described below.
Example 1
Locknut, including nut body 1 and flange face 2, its characterized in that: the nut body 1 is connected to the upper part of the flange surface 2, and the nut body 1 and the flange surface 2 are integrally formed; the locknut is axially provided with a threaded hole and radially provided with a tool withdrawal groove 5; the upper end thread of the tool withdrawal groove 5 is set as a locking thread 4, and the lower end thread of the tool withdrawal groove 5 is set as a common thread 3; a thread form angle alpha is arranged between two adjacent thread sides of the anti-loosening thread 4, and a thread form angle beta is arranged between two adjacent thread sides of the common thread 3.
In the preferred embodiment, the thread form angle α of the check thread 4 is set to 55 °.
In the preferred embodiment, the common thread 3 profile angle β is set to 60 °.
In the preferred embodiment, the screwing length of the anti-loose thread 4 is 1/3 of the screwing length of the nut body 1.
Example 2
Locknut, including nut body 1 and flange face 2, its characterized in that: the nut body 1 is connected to the upper part of the flange surface 2, and the nut body 1 and the flange surface 2 are integrally formed; the locknut is axially provided with a threaded hole and radially provided with a tool withdrawal groove 5; the upper end thread of the tool withdrawal groove 5 is set as a locking thread 4, and the lower end thread of the tool withdrawal groove 5 is set as a common thread 3; a thread form angle alpha is arranged between two adjacent thread sides of the anti-loosening thread 4, and a thread form angle beta is arranged between two adjacent thread sides of the common thread 3.
In the preferred embodiment, the thread form angle α of the check thread 4 is set to 58 °.
In the preferred embodiment, the common thread 3 profile angle β is set to 60 °.
In the preferred embodiment, the screwing length of the anti-loose thread 4 is 1/4 of the screwing length of the nut body 1.
A, processing a locknut, namely, blanking; b. cold heading hexagonal, c, turning an outer circle and an end face, drilling, boring a tool withdrawal groove, and d, processing common threads by using a standard screw tap; e. turning, screwing the workpiece on the thread of the core rod, and turning the anti-loose thread by using a 55-58-degree threading tool.
During specific implementation, when the locknut is screwed, the bolt firstly passes through the common threads, the thread line of the top of the bolt is meshed with the bottom line of the common thread, friction force is generated, when the bolt is screwed to the locknut, because the angle of the bottom angle of the locknut is reduced, the friction force of the thread line of the top of the bolt and the bottom line of the locknut is increased, the locknut generates elastic deformation, thereby generating great locking force and achieving the locking effect.
The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, but not intended to limit the scope of the present invention, and all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (4)
1. Locknut, including nut body (1) and flange face (2), its characterized in that: the nut body (1) is connected to the upper part of the flange surface (2), and the nut body (1) and the flange surface (2) are integrally formed; the locknut is axially provided with a threaded hole, and a tool withdrawal groove (5) is radially arranged; the upper end threads of the tool withdrawal grooves (5) are arranged into anti-loosening threads (4), and the lower end threads of the tool withdrawal grooves (5) are arranged into common threads (3); a thread form angle alpha is arranged between two adjacent thread sides of the anti-loosening thread (4), and a thread form angle beta is arranged between two adjacent thread sides of the common thread (3).
2. The locknut of claim 1, wherein: the tooth form angle alpha of the anti-loosening thread (4) is set to be 55-58 degrees.
3. The locknut of claim 1, wherein: the thread form angle beta of the common thread (3) is set to be 60 degrees.
4. The locknut of claim 1, wherein: the screwing length of the anti-loosening thread (4) is 1/3-1/4 of the screwing length of the nut body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110386198.1A CN112983961A (en) | 2021-04-12 | 2021-04-12 | Anti-loose nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110386198.1A CN112983961A (en) | 2021-04-12 | 2021-04-12 | Anti-loose nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983961A true CN112983961A (en) | 2021-06-18 |
Family
ID=76337786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110386198.1A Pending CN112983961A (en) | 2021-04-12 | 2021-04-12 | Anti-loose nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112983961A (en) |
-
2021
- 2021-04-12 CN CN202110386198.1A patent/CN112983961A/en active Pending
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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 |