CN217873708U - Novel nut with locking anti-loosening structure - Google Patents
Novel nut with locking anti-loosening structure Download PDFInfo
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- CN217873708U CN217873708U CN202220728903.1U CN202220728903U CN217873708U CN 217873708 U CN217873708 U CN 217873708U CN 202220728903 U CN202220728903 U CN 202220728903U CN 217873708 U CN217873708 U CN 217873708U
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Abstract
A novel nut with a locking anti-loosening structure comprises a screw, a first nut and a second nut, wherein the first nut and the second nut are both screwed in and arranged outside the screw; the middle part of the first nut is provided with a first through hole for accommodating a screw to penetrate through, the surface of the first through hole is provided with a first internal thread, the lower part of the first nut comprises a protruding part, and the outer surface of the protruding part is provided with an external thread; a second through hole for accommodating a screw to penetrate through is formed in the middle of the second nut, second internal threads are formed in the surface of the second through hole, an inner concave cavity is formed in the upper portion of the second nut, and third internal threads are formed in the surface of the inner concave cavity; the inner edge of the lower end of the protruding part is provided with a chamfer surface; the bottom of the inner concave cavity is provided with a rubber ring; has the advantages of convenient use, simple structure and difficult looseness.
Description
The technical field is as follows:
the utility model belongs to the technical field of engineering part technique and specifically relates to a novel nut with locking structure that moves that says so.
Background art:
the bolt and the nut are used as industrial basic components, are widely applied to fastening and connecting parts, structures and components in industrial equipment and devices, and are mechanical parts with extremely wide application. The reliability of the connection directly affects the operation stability and safety of the connected equipment and components. The reliability of the bolt and the nut is realized by applying a predetermined pretightening force to the connected parts and components and keeping the pretightening force within a certain range in the whole service cycle. Under most practical conditions, the failure of the bolt and the nut is caused by the loosening of the nut due to the additional movement or external force of components, parts and the like in work, so that the connected components, the components and the like lose the connection pretightening force to cause the connection failure.
The invention content is as follows:
for solving the problem, overcome the not enough of prior art, the utility model provides a use is convenient, simple structure, difficult not hard up have the locking novel nut of moving structure of locking.
In order to achieve the purpose, the utility model provides a novel nut with a locking anti-loosening structure, which comprises a screw, a first nut and a second nut, wherein the first nut and the second nut are both screwed in and arranged outside the screw; the middle part of the first nut is provided with a first through hole for accommodating a screw to penetrate through, the surface of the first through hole is provided with a first internal thread, the lower part of the first nut comprises a protruding part, and the outer surface of the protruding part is provided with an external thread; a second through hole for accommodating a screw to penetrate through is formed in the middle of the second nut, second internal threads are formed in the surface of the second through hole, an inner concave cavity is formed in the upper portion of the second nut, and third internal threads are formed in the surface of the inner concave cavity;
the inner edge of the lower end of the protruding part is provided with a chamfer surface;
the bottom of the inner concave cavity is provided with a rubber ring.
Further, the outer surface of the screw is provided with screw threads, and the first internal threads and the second internal threads are both in threaded engagement with the screw threads.
Further, the external thread and the third internal thread are engaged.
Further, the height of the protrusion is the same as the depth of the inner cavity.
Further, the thread pitch of the screw thread, the external thread, the first internal thread, the second internal thread and the third internal thread is the same.
Furthermore, the diameter of the cross section of the rubber ring is larger than the longitudinal projection width of the oblique cutting plane.
Furthermore, the lower surface of the first nut and the upper surface of the second nut are both provided with friction fine lines.
The utility model has the advantages that:
the utility model provides a novel nut with locking anti-loosening structure, which has the advantages of convenient use, simple structure and difficult loosening, the first nut and the second nut can be screwed in and connected and are in close contact with each other, thereby preventing the nut from loosening due to vibration; after the concave cavity in the protruding part screw in, the scarf can extrude the rubber circle, makes it warp and fills the space that forms to scarf and screw thread to frictional force between greatly increased nut and the screw, and the rubber circle can also the shock attenuation, effectively plays locking effect.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the screw-on state of the present invention;
in the drawings: 1. screw, 2, first nut, 3, protruding portion, 4, second nut, 5, rubber circle, 11, screw thread, 21, first internal thread, 31, external screw thread, 32, chamfer, 41, second internal thread, 42, third internal thread, 43, interior concave cavity.
The specific implementation mode is as follows:
in order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the accompanying drawings 1-2 of the present invention to perform more detailed description of the present invention.
The utility model provides a novel nut with locking anti-loosening structure, which comprises a screw 1, a first nut 2 and a second nut 4, wherein the first nut 2 and the second nut 4 are both screwed in and arranged outside the screw 1; a first through hole for accommodating the screw 1 to penetrate is formed in the middle of the first nut 2, a first internal thread 21 is formed in the surface of the first through hole, the lower portion of the first nut 2 comprises a protruding portion 3, and an external thread 31 is formed on the outer surface of the protruding portion 3; a second through hole for accommodating the screw 1 to penetrate is formed in the middle of the second nut 4, a second internal thread 41 is formed in the surface of the second through hole, an inner concave cavity 43 is formed in the upper portion of the second nut 4, and a third internal thread 42 is formed in the surface of the inner concave cavity 43; the lower end inner edge of the protruding part 3 is provided with a chamfer surface 32; the bottom of the inner concave cavity 43 is provided with a rubber ring 5; the outer surface of the screw 1 is provided with a screw thread 11, and the first internal thread 21 and the second internal thread 41 are both meshed with the screw thread 11; the external thread 31 and the third internal thread 42 are engaged; the height of the protrusion 3 is the same as the depth of the inner cavity 43; the pitch of the screw thread 11, the external thread 31, the first internal thread 21, the second internal thread 41 and the third internal thread 42 is the same; the diameter of the section of the rubber ring 5 is larger than the longitudinal projection width of the chamfer surface 32; the lower surface of the first nut 2 and the upper surface of the second nut 4 are both provided with friction fine threads.
The utility model discloses a one of them embodiment as follows:
the novel nut with the locking anti-loosening structure comprises a screw 1, a first nut 2 and a second nut 4, wherein the first nut 2 and the second nut 4 are both screwed in and arranged outside the screw 1;
a first through hole for accommodating the screw 1 to penetrate is formed in the middle of the first nut 2, a first internal thread 21 is formed in the surface of the first through hole, the lower portion of the first nut 2 comprises a protruding portion 3, and an external thread 31 is formed on the outer surface of the protruding portion 3;
a second through hole for accommodating the screw 1 to penetrate through is formed in the middle of the second nut 4, a second internal thread 41 is formed in the surface of the second through hole, an inner concave cavity 43 is formed in the upper portion of the second nut 4, and a third internal thread 42 is formed in the surface of the inner concave cavity 43;
the outer surface of the screw 1 is provided with a screw thread 11, the first internal thread 21 and the second internal thread 41 are all meshed with the screw thread 11, the external thread 31 is meshed with the third internal thread 42, the thread pitch of the screw thread 11, the external thread 31, the first internal thread 21, the second internal thread 41 and the third internal thread 42 is the same, the height of the protruding part 3 is the same as the depth of the inner concave cavity 43, and the first nut 2 and the second nut 4 can be screwed together and tightly attached to prevent the nuts from loosening due to vibration.
The inner edge of the lower end of the protruding portion 3 is provided with the inclined cut surface 32, the bottom of the inner concave cavity 43 is provided with the rubber ring 5, the diameter of the cross section of the rubber ring 5 is larger than the longitudinal projection width of the inclined cut surface 32, and after the protruding portion 3 is screwed into the inner concave cavity 43, the inclined cut surface 32 can extrude the rubber ring 5 to enable the rubber ring 5 to deform and fill the space formed by the inclined cut surface 32 and the screw thread 11, so that the friction force between the nut and the screw 1 is greatly increased, the rubber ring 5 can also absorb shock, and the anti-loosening effect is effectively achieved;
friction fine lines are arranged on the lower surface of the first nut 2 and the upper surface of the second nut 4, and after the first nut 2 and the second nut 4 are screwed, larger friction force can be generated between the friction fine lines.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A novel nut with a locking anti-loosening structure comprises a screw, a first nut and a second nut, wherein the first nut and the second nut are both screwed in and arranged outside the screw; the method is characterized in that: the middle part of the first nut is provided with a first through hole for accommodating a screw to penetrate through, the surface of the first through hole is provided with a first internal thread, the lower part of the first nut comprises a protruding part, and the outer surface of the protruding part is provided with an external thread; a second through hole for accommodating a screw to penetrate through is formed in the middle of the second nut, second internal threads are formed in the surface of the second through hole, an inner concave cavity is formed in the upper portion of the second nut, and third internal threads are formed in the surface of the inner concave cavity;
the inner edge of the lower end of the protruding part is provided with a chamfer surface;
and a rubber ring is arranged at the bottom of the inner concave cavity.
2. The novel nut with locking anti-loosening structure as claimed in claim 1, wherein: the outer surface of the screw is provided with screw threads, and the first internal threads and the second internal threads are both meshed with the screw threads.
3. The novel nut with locking anti-loosening structure as claimed in claim 1, wherein: the external thread and the third internal thread are engaged.
4. The novel nut with locking anti-loosening structure as claimed in claim 1, wherein: the height of the protrusion is the same as the depth of the inner cavity.
5. The novel nut with locking anti-loosening structure as claimed in claim 1, wherein: the outer surface of the screw is provided with screw threads, and the thread pitch of the screw threads, the external threads, the first internal threads, the second internal threads and the third internal threads is the same.
6. The novel nut with locking anti-loosening structure as claimed in claim 1, wherein: the diameter of the cross section of the rubber ring is larger than the longitudinal projection width of the oblique cutting plane.
7. The novel nut with locking anti-loosening structure according to claim 1, wherein: and friction fine grains are arranged on the lower surface of the first nut and the upper surface of the second nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220728903.1U CN217873708U (en) | 2022-03-31 | 2022-03-31 | Novel nut with locking anti-loosening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220728903.1U CN217873708U (en) | 2022-03-31 | 2022-03-31 | Novel nut with locking anti-loosening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217873708U true CN217873708U (en) | 2022-11-22 |
Family
ID=84085379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220728903.1U Active CN217873708U (en) | 2022-03-31 | 2022-03-31 | Novel nut with locking anti-loosening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217873708U (en) |
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2022
- 2022-03-31 CN CN202220728903.1U patent/CN217873708U/en active Active
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