CN107605917B - Anti-back anti-loosening nut - Google Patents
Anti-back anti-loosening nut Download PDFInfo
- Publication number
- CN107605917B CN107605917B CN201711033782.9A CN201711033782A CN107605917B CN 107605917 B CN107605917 B CN 107605917B CN 201711033782 A CN201711033782 A CN 201711033782A CN 107605917 B CN107605917 B CN 107605917B
- Authority
- CN
- China
- Prior art keywords
- cavity
- pawl
- nut
- column
- cylinder
- 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.)
- Active
Links
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
- Dowels (AREA)
Abstract
The invention discloses a non-return anti-loosening nut, which comprises: the nut comprises a nut body, wherein an inner hole of the nut body comprises a first cylinder cavity and a second cylinder cavity which is positioned at one end of the first cylinder cavity and is coaxially arranged with the first cylinder cavity, the inner wall of the first cylinder cavity is provided with an internal thread, the inner diameter of the second cylinder cavity is larger than that of the first cylinder cavity, and a pawl is arranged in the second cylinder cavity; the pawl is made of elastic metal materials, the pawl is axially arranged in the second column body cavity, one end, close to the first column body cavity, of the pawl is fixed with the inner wall of the second column body cavity, one end, far away from the first column body cavity, of the pawl is a free end, and the space between the pawl and the inner wall of the second column body cavity is gradually increased from the fixed end to the free end direction of the space, and the maximum value of the space is larger than the inner diameter difference between the second column body cavity and the first column body cavity. The invention has good backstop and loosening effects.
Description
Technical Field
The invention relates to the technical field of nut and bolt production and manufacturing, in particular to a backstop anti-loosening nut.
Background
At present, the connection of components or the fastening of equipment and parts is usually completed by adopting the cooperation of bolts and nuts. Because the bolts are often used in jolt and swaying environments, the jolt and swaying environments can cause the nuts to loosen and fall off, certain potential safety hazards exist, and improvement is needed.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a backstop anti-loose nut.
The invention provides a backstop anti-loosening nut, which comprises: the nut comprises a nut body, wherein an inner hole of the nut body comprises a first cylinder cavity and a second cylinder cavity which is positioned at one end of the first cylinder cavity and is coaxially arranged with the first cylinder cavity, the inner wall of the first cylinder cavity is provided with an internal thread, the inner diameter of the second cylinder cavity is larger than that of the first cylinder cavity, and a pawl is arranged in the second cylinder cavity; the pawl is made of elastic metal materials, the pawl is axially arranged in the second column body cavity, one end, close to the first column body cavity, of the pawl is fixed with the inner wall of the second column body cavity, one end, far away from the first column body cavity, of the pawl is a free end, and the space between the pawl and the inner wall of the second column body cavity is gradually increased from the fixed end to the free end direction of the space, and the maximum value of the space is larger than the inner diameter difference between the second column body cavity and the first column body cavity.
Preferably, the side edges of the two sides of the pawl are respectively provided with an arc edge which curls towards the inner wall direction of the second cylinder cavity.
Preferably, two pawls are provided, the two pawls being disposed relatively in the second cylinder chamber.
Preferably, the inner hole of the nut further comprises a third cylinder cavity, the third cylinder cavity is located at one end, far away from the first cylinder cavity, of the second cylinder cavity, the inner diameter of the third cylinder cavity is larger than that of the first cylinder cavity, internal threads are arranged in the third cylinder cavity, an inner sleeve in threaded connection with the third cylinder cavity is further arranged in the third cylinder cavity, the inner diameter of the inner sleeve is larger than that of the first cylinder cavity, a first elastic piece and a second elastic piece which are made of elastic metal materials are arranged at one end of the inner sleeve, and the first elastic piece and the second elastic piece are oppositely arranged and are fixedly connected with the inner sleeve.
Preferably, when the inner sleeve is in a threaded connection state with the third cylinder cavity, the first elastic piece and the second elastic piece are positioned at one end of the inner sleeve far away from the third cylinder cavity.
According to the invention, the inner hole structure of the nut is arranged to comprise a first column cavity and a second column cavity, an inner thread is arranged in the first column cavity, a pawl is arranged in the second column cavity, the pawl is axially arranged in the second column cavity, one end of the pawl, which is close to the first column cavity, is fixed with the inner wall of the second column cavity, the space between the pawl and the inner wall of the second column cavity is gradually increased from the fixed end to the free end direction of the pawl, the maximum value of the space is larger than the inner diameter difference between the second column cavity and the first column cavity, so that when the nut is assembled with the bolt, the free end of the pawl is always abutted against the outer wall of the bolt, the pawl does not act in the screwing-in process of the nut due to the limit of the pawl installation mode, and when the nut is unscrewed, the free end of the pawl is abutted against the thread on the bolt, the nut cannot unscrew, and a good stopping and loosening effects are achieved.
Drawings
Fig. 1 is a schematic structural view of a back-up locking nut according to the present invention.
Detailed Description
The technical scheme of the invention is described in detail through specific embodiments.
Fig. 1 is a schematic structural view of a retaining lock nut according to the present invention.
Referring to fig. 1, a back stop lock nut according to an embodiment of the present invention includes: the nut comprises a nut body 1, wherein an inner hole of the nut body 1 comprises a first column cavity 101 and a second column cavity 102 which is positioned at one end of the first column cavity 101 and is coaxially arranged with the first column cavity 101, an inner thread is arranged on the inner wall of the first column cavity 101, the inner diameter of the second column cavity 102 is larger than that of the first column cavity 101, and a pawl 2 is arranged in the second column cavity 102; the pawl 2 is made of elastic metal materials, the pawl 2 is axially arranged in the second column body cavity 102, one end, close to the first column body cavity 101, of the pawl 2 is fixed with the inner wall of the second column body cavity 102, one end, far away from the first column body cavity 101, of the pawl 2 is a free end, and the inner wall of the second column body cavity 102 is provided with a distance which increases gradually from the fixed end to the free end, and the maximum value of the distance is larger than the inner diameter difference between the second column body cavity 102 and the first column body cavity 101.
The invention is used as follows: when the nut is mounted on the bolt, the first cylindrical cavity 101 is in butt joint with the bolt and the nut is rotated to enable the nut to gradually spiral up, in the process, the pawl 2 does not work, only the pawl 2 is gradually moved along with the screw nut, and after the nut is fixed, the free end of the pawl 2 abuts against the screw teeth on the bolt, so that the nut cannot be screwed out, and the anti-back loosening effect is achieved. When the nut needs to be withdrawn, the pawl 2 is pressed towards the second cylinder cavity 102 by the sheet body structure, so that the free end of the pawl 2 and the bolt can be unscrewed after falling off.
As can be seen from the above, the present invention sets the inner hole structure of the nut to include the first post cavity 101 and the second post cavity 102, and sets the internal thread in the first post cavity 101, sets the pawl 2 in the second post cavity 102, and makes the pawl 2 axially disposed in the second post cavity 102, one end of the pawl 2 near the first post cavity 101 is fixed with the inner wall of the second post cavity 102, the space between the pawl 2 and the inner wall of the second post cavity 102 increases gradually from the fixed end to the free end, the maximum value of the space is larger than the inner diameter difference between the second post cavity 102 and the first post cavity 101, so that when the nut is assembled with the bolt, the free end of the pawl 2 always abuts against the outer wall of the bolt, due to the limitation of the installation mode of the pawl 2, the pawl 2 does not work in the screwing-in process of the nut, and when the nut is unscrewed, the free end of the pawl 2 abuts against the thread on the bolt, the nut cannot unscrew, thereby achieving good anti-unscrewing effect.
In addition, in this embodiment, the two sides of the pawl 2 are provided with radian edges curled toward the inner wall of the second cylinder 102, so that the pawl 2 can conveniently and spirally lift up and down around the outer wall of the bolt when the nut and the bolt are assembled.
In this embodiment, two pawls 2 are provided, and the two pawls 2 are disposed relatively in the second cylinder chamber 102 to further enhance the anti-backlash effect. The inner hole of the nut in this embodiment further comprises a third cylinder cavity, the third cylinder cavity is located at one end of the second cylinder cavity 102 far away from the first cylinder cavity 101, the inner diameter of the third cylinder cavity is larger than the inner diameter of the first cylinder cavity 101, an internal thread is arranged in the third cylinder cavity, an inner sleeve 3 in threaded connection with the third cylinder cavity is further arranged in the third cylinder cavity, and the inner diameter of the inner sleeve 3 is larger than the inner diameter of the first cylinder cavity 101, so that a bolt matched with the nut can smoothly pass through the inner sleeve 3; the first elastic piece 4 and the second elastic piece 5 which are made of elastic metal materials are arranged at one end of the inner sleeve 3, the first elastic piece 4 and the second elastic piece 5 are oppositely arranged and are fixedly connected with the inner sleeve 3, when a nut is required to be removed, the inner sleeve 3 is only required to be removed, the first elastic piece 3 and the second elastic piece 4 are pressed, the first elastic piece 3 and the second elastic piece 4 extend into the space between the two pawls 2, then the pressing of the first elastic piece 3 and the second elastic piece 4 is released, and the self-elasticity of the first elastic piece 3 and the second elastic piece 4 is utilized for resetting, so that the pawls 2 are separated from the outer wall of a bolt, and the nut can be smoothly rotated out. In this embodiment, when the inner sleeve 3 is in a threaded connection with the third cylinder cavity, the first elastic piece 4 and the second elastic piece 5 are located at one end of the inner sleeve 3 away from the third cylinder cavity, which is convenient for connecting the inner sleeve 3 with the nut, and can reduce the height of the nut, and the structure is simple and compact.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. A backstop locknut, characterized by comprising: the nut comprises a nut body (1), wherein an inner hole of the nut body (1) comprises a first column cavity (101) and a second column cavity (102) which is positioned at one end of the first column cavity (101) and is coaxially arranged with the first column cavity (101), an inner thread is arranged on the inner wall of the first column cavity (101), the inner diameter of the second column cavity (102) is larger than that of the first column cavity (101), and a pawl (2) is arranged in the second column cavity (102); the pawl (2) is made of elastic metal materials, the pawl (2) is axially arranged in the second column body cavity (102), one end, close to the first column body cavity (101), of the pawl (2) is fixed with the inner wall of the second column body cavity (102), one end, far away from the first column body cavity (101), of the pawl (2) is a free end, a space which is gradually increased from the fixed end to the free end is formed between the pawl (2) and the inner wall of the second column body cavity (102), and the maximum value of the space is larger than the inner diameter difference between the second column body cavity (102) and the first column body cavity (101);
when the nut is assembled with the bolt, the free end of the pawl (2) is always abutted against the outer wall of the bolt, the pawl (2) does not act in the screwing process of the nut due to the limit of the installation mode of the pawl (2), and when the nut is unscrewed, the nut cannot be unscrewed due to the fact that the free end of the pawl (2) is abutted against the screw teeth on the bolt;
the two pawls (2) are arranged, and the two pawls (2) are relatively arranged in the second column cavity (102);
the inner hole of the nut further comprises a third cylinder cavity, the third cylinder cavity is positioned at one end, far away from the first cylinder cavity (101), of the second cylinder cavity (102), the inner diameter of the third cylinder cavity is larger than that of the first cylinder cavity (101), internal threads are arranged in the third cylinder cavity, an inner sleeve (3) in threaded connection with the third cylinder cavity is further arranged in the third cylinder cavity, the inner diameter of the inner sleeve (3) is larger than that of the first cylinder cavity (101), a first elastic piece (4) and a second elastic piece (5) which are made of elastic metal materials are arranged at one end of the inner sleeve (3), and the first elastic piece (4) and the second elastic piece (5) are oppositely arranged and are fixedly connected with the inner sleeve (3);
when the inner sleeve (3) is in a threaded connection state with the third cylinder cavity, the first elastic piece (4) and the second elastic piece (5) are positioned at one end of the inner sleeve (3) far away from the third cylinder cavity.
2. The anti-back lock nut as claimed in claim 1, wherein the side edges of both sides of the pawl (2) are provided with arc edges curled toward the inner wall of the second cylinder chamber (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033782.9A CN107605917B (en) | 2017-10-30 | 2017-10-30 | Anti-back anti-loosening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033782.9A CN107605917B (en) | 2017-10-30 | 2017-10-30 | Anti-back anti-loosening nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605917A CN107605917A (en) | 2018-01-19 |
| CN107605917B true CN107605917B (en) | 2024-03-29 |
Family
ID=61083800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711033782.9A Active CN107605917B (en) | 2017-10-30 | 2017-10-30 | Anti-back anti-loosening nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107605917B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760324Y (en) * | 2004-11-23 | 2006-02-22 | 陈光陶 | Improved fast-attaching screw cap structure |
| CN102483088A (en) * | 2009-07-03 | 2012-05-30 | 哈特马特.弗莱格 | Lock nut |
| CN206419324U (en) * | 2016-12-30 | 2017-08-18 | 北京中航路通科技有限公司 | A kind of stop nut |
| CN107269665A (en) * | 2017-08-08 | 2017-10-20 | 张亚宁 | Super fastening kit |
| CN207364063U (en) * | 2017-10-30 | 2018-05-15 | 安徽凯瑞汽配制造有限公司 | A kind of retaining Anti-loosen nut |
-
2017
- 2017-10-30 CN CN201711033782.9A patent/CN107605917B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760324Y (en) * | 2004-11-23 | 2006-02-22 | 陈光陶 | Improved fast-attaching screw cap structure |
| CN102483088A (en) * | 2009-07-03 | 2012-05-30 | 哈特马特.弗莱格 | Lock nut |
| CN206419324U (en) * | 2016-12-30 | 2017-08-18 | 北京中航路通科技有限公司 | A kind of stop nut |
| CN107269665A (en) * | 2017-08-08 | 2017-10-20 | 张亚宁 | Super fastening kit |
| CN207364063U (en) * | 2017-10-30 | 2018-05-15 | 安徽凯瑞汽配制造有限公司 | A kind of retaining Anti-loosen nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107605917A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201908932U (en) | Self-locking locknut assembly | |
| WO2017084192A1 (en) | Anti-loosening fastener device | |
| CN210164768U (en) | Anti-loosening sleeve bolt | |
| CN103195786A (en) | Anti-looseness nut | |
| CN107605917B (en) | Anti-back anti-loosening nut | |
| CN212028292U (en) | Anti-loosening fastener | |
| CN207569023U (en) | A kind of locking self-locking fastener | |
| CN107588084B (en) | Locking bolt assembly of easily assembling that moves | |
| CN206190708U (en) | Threaded fastener companion | |
| CN213575094U (en) | Double-nut self-locking check bolt | |
| CN206458700U (en) | A kind of Multifunctional bolt | |
| CN206600343U (en) | Combination nut | |
| CN210318125U (en) | Fastening device | |
| CN108361267A (en) | A kind of included clamping head stop nut | |
| CN201982456U (en) | Steel wire thread sleeve | |
| CN111692190B (en) | Check bolt structure | |
| CN207569022U (en) | A kind of never becoming loose bolt | |
| CN210218371U (en) | Combined lock nut | |
| CN106837976A (en) | A kind of threaded fastener companion | |
| CN208619505U (en) | A kind of threaded components of difference screw pitch fastening | |
| CN210686616U (en) | Primary and secondary anti-loosening bolt | |
| CN105422601A (en) | Lock nut | |
| CN203230713U (en) | Locking nut | |
| CN105650083B (en) | A kind of swivel nut and the connection component using the swivel nut | |
| CN209115510U (en) | Locking nut for brother's woods column |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |