CN202883652U - Fold-line-shaped self-lock nut - Google Patents
Fold-line-shaped self-lock nut Download PDFInfo
- Publication number
- CN202883652U CN202883652U CN 201220439691 CN201220439691U CN202883652U CN 202883652 U CN202883652 U CN 202883652U CN 201220439691 CN201220439691 CN 201220439691 CN 201220439691 U CN201220439691 U CN 201220439691U CN 202883652 U CN202883652 U CN 202883652U
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- CN
- China
- Prior art keywords
- nut
- line
- fold
- sliding sleeve
- shaped self
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to the field of small hardware parts, in particular to a fastening part. A fold-line-shaped self-lock nut is composed of an upper nut and a lower sliding sleeve. The upper nut is meshed with the lower sliding sleeve through a folding line. Inner threads are arranged in the upper nut and a through hole is arranged in the lower sliding sleeve. An angle of inclination alpha of the folding line of the meshed face is larger than a spiral angle of the inner threads. When the fold-line-shaped self-lock nut locks a screw bolt, the screw bolt is affected by a load, axial initial tension reduces and thread meshing goes loose, as the angle of the slant face is larger than the spiral angle of the threads, the upper and lower portions of the nut rotate relatively and boost the axial initial tension of the screw bolt and self lock is achieved. Thus, the fold-line-shaped self-lock nut is good in anti-loose effect.
Description
Technical field
The utility model relates to hardware part field, relates in particular to a kind of fastening piece.
Background technique
Existing locking nut mainly is nonmetal, full-metallic locking nut etc.Nonmetal is to inlay rubber ring at the nut head end, makes nut cooperate the additional pretightening force of generation to reach locking purpose with bolt thread.The full-metallic locking nut at first makes the nut head produce slight deformation, reaches locking purpose.The Acceptable life of this two classes nut is all shorter, and is operated in when vibrating frequently on the equipment, and reliability is relatively poor.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of fold-line-shaped Self-lock nut, because the bevel angle of top and the bottom surface of contact is greater than the thread helix angle, nut is the two-part axial pre tightening force that can increase bolt that relatively rotates up and down, produces self-locking, and preferably anti-loosing effect is arranged.
The utility model is achieved in that a kind of fold-line-shaped Self-lock nut, consisted of by upper nut and bottom sliding sleeve two-part, mesh by broken line between described upper nut and the bottom sliding sleeve, be provided with internal thread in the described upper nut, be through hole in the sliding sleeve of bottom, the tilt angle alpha of described Surface of action broken line is greater than the internal thread helix angle.
The internal diameter of described bottom sliding sleeve inner via hole equals the large footpath of upper nut internal thread.
Behind the utility model fold-line-shaped Self-lock nut lock bolt, carrying outside bolt is subjected to affects, when becoming flexible appears in axial pre tightening force reduction thread engagement, because the angle on inclined-plane is greater than the thread helix angle, nut is the two-part axial pre tightening force that can increase bolt that relatively rotates up and down, produce self-locking, preferably anti-loosing effect is arranged.
Description of drawings
Fig. 1 is the utility model fold-line-shaped Self-lock nut decomposing schematic representation;
Fig. 2 is the good structural representation of the utility model assembly unit.
Among the figure: 1 upper nut, 2 bottom sliding sleeves.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments only are used for explanation the utility model and are not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1, 2, a kind of fold-line-shaped Self-lock nut, consisted of by upper nut 1 and bottom sliding sleeve 2 two-part, mesh by broken line between described upper nut 1 and the bottom sliding sleeve 2, be provided with internal thread in the described upper nut 1, be through hole in the bottom sliding sleeve 2, the tilt angle alpha of described Surface of action broken line is greater than the internal thread helix angle.
In the present embodiment, the internal diameter of described bottom sliding sleeve 2 inner via holes equals the large footpath of upper nut 1 internal thread.
After the utility model fold-line-shaped Self-lock nut is tightened, carrying outside bolt is subjected to affects, when becoming flexible appears in axial pre tightening force reduction thread engagement, because the angle on inclined-plane is greater than the thread helix angle, nut is the two-part axial pre tightening force that can increase bolt that relatively rotates up and down, produce self-locking, thereby reach locking purpose.During assembling, only need to nut up and down two-part fold-line-shaped face fit together, get final product complete operation with the method for conventional fastening nut.
Claims (2)
1. fold-line-shaped Self-lock nut, it is characterized in that: consisted of by upper nut (1) and bottom sliding sleeve (2) two-part, mesh by broken line between described upper nut (1) and the bottom sliding sleeve (2), described upper nut is provided with internal thread in (1), be through hole in the bottom sliding sleeve (2), the tilt angle alpha of described Surface of action broken line is greater than the internal thread helix angle.
2. fold-line-shaped Self-lock nut as claimed in claim 1, it is characterized in that: the internal diameter of described bottom sliding sleeve (2) inner via hole equals the large footpath of upper nut (1) internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439691 CN202883652U (en) | 2012-08-31 | 2012-08-31 | Fold-line-shaped self-lock nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439691 CN202883652U (en) | 2012-08-31 | 2012-08-31 | Fold-line-shaped self-lock nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883652U true CN202883652U (en) | 2013-04-17 |
Family
ID=48075083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220439691 Expired - Fee Related CN202883652U (en) | 2012-08-31 | 2012-08-31 | Fold-line-shaped self-lock nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649048A (en) * | 2020-07-06 | 2020-09-11 | 罗章平 | Locknut external member |
-
2012
- 2012-08-31 CN CN 201220439691 patent/CN202883652U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649048A (en) * | 2020-07-06 | 2020-09-11 | 罗章平 | Locknut external member |
| CN111649048B (en) * | 2020-07-06 | 2021-09-14 | 罗章平 | Locknut external member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20190831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |