CN220687807U - Anti-loosening nut - Google Patents
Anti-loosening nut Download PDFInfo
- Publication number
- CN220687807U CN220687807U CN202321507719.5U CN202321507719U CN220687807U CN 220687807 U CN220687807 U CN 220687807U CN 202321507719 U CN202321507719 U CN 202321507719U CN 220687807 U CN220687807 U CN 220687807U
- Authority
- CN
- China
- Prior art keywords
- nut
- utility
- model
- threaded hole
- locknut
- 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
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a locking nut which comprises a first nut and a second nut, wherein a first threaded hole is formed in the first nut, and the surface of the first nut extends upwards along the periphery of the first threaded hole to form a protruding part; the second nut is internally provided with a second threaded hole and a concave part, and the shape of the concave part is matched with that of the convex part. The anti-loosening nut provided by the utility model has good anti-loosening effect and simple structure.
Description
Technical Field
The utility model relates to the technical field of fastening equipment, in particular to a locknut.
Background
The parts connected by the bolt and the nut in a matched manner are easy to loose under the conditions of load change, vibration, impact and the like, and the service performance and the safety and reliability of the equipment are directly affected. The prior anti-loosening measure is to arrange a gasket or a gasket between the nut and the part, after the nut is screwed, the elasticity generated by flattening the gasket or the gasket can compress the screwed threads, but the anti-loosening effect of the gasket or the gasket under the action of vibration impact load is poor.
Disclosure of Invention
The utility model aims to solve the technical problems of providing a locking nut which has good locking effect and simple structure.
In order to solve the technical problems, the utility model provides a locking nut, which comprises a first nut and a second nut, wherein a first threaded hole is formed in the first nut, and the surface of the first nut extends upwards along the periphery of the first threaded hole to form a protruding part; the second nut is internally provided with a second threaded hole and a concave part, and the shape of the concave part is matched with that of the convex part.
As a modification of the above, the bottom diameter of the convex part is D 1 The top diameter of the protruding part is D 2 ，D 1 ＞D 2 。
As an improvement of the scheme, the convex part is in a truncated cone shape or a semi-elliptic shape.
As a modification of the scheme, the top diameter of the concave part is D 3 ，D 2 ≥D 3 。
As an improvement of the scheme, the height of the convex part is H 1 The depth of the concave part is H 2 ，H 1 ≥H 2 。
As an improvement of the scheme, the outer wall of the protruding part is provided with a groove.
As an improvement of the scheme, the grooves are uniformly arranged at intervals.
As an improvement of the scheme, the end part of the groove is arc-shaped.
The implementation of the utility model has the following beneficial effects:
when the first nut is connected with the second nut, the protruding part of the first nut can be well clamped in the concave part of the second nut, the first nut and the bolt are further fastened by extrusion of the second nut, and meanwhile the first nut is difficult to rotate under the limit of the second nut.
Drawings
FIG. 1 is a schematic view of a locknut provided by the present utility model;
FIG. 2 is a cross-sectional view taken along the A-A plane of FIG. 1 in accordance with the present utility model;
FIG. 3 is a front view of a first nut of the present utility model;
FIG. 4 is a top view of a first nut of the present utility model;
FIG. 5 is a front view of a second nut of the present utility model;
fig. 6 is a top view of a second nut of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.
As shown in fig. 1 to 6, the embodiment of the present utility model provides a locknut, which comprises a first nut 1 and a second nut 2, wherein a first threaded hole 11 is formed in the first nut 1, and the surface of the first nut 1 extends upwards along the periphery of the first threaded hole 11 to form a protruding part 12; the second nut 2 is internally provided with a second threaded hole 21 and a concave part 22, and the shape of the concave part 22 is matched with the shape of the convex part 12. In order to prevent the nut fixed on the bolt from loosening due to vibration and the like, the anti-loosening nut provided by the embodiment comprises a first nut 1 and a second nut 2, wherein the first nut 1 is in contact with the fixed part for fastening the part, the second nut 2 is abutted against and fixed with the convex part 12 of the first nut 1 through the concave part 22, the rotation of the first nut 1 can be prevented, and the first nut 1 and the second nut 2 are in combined action, so that the stability of the part and the safety reliability of the whole equipment are ensured.
The diameter of the bottom of the boss 12 is D 1 The top diameter of the boss 12 is D 2 ，D 1 ＞D 2 The convex part 12 with narrow upper part and wide lower part can ensure that the convex part 12 smoothly enters the concave part 22 and contacts, and limit the convex partRotation of the rising portion 12 restricts rotation of the first nut 1.
In order to better ensure the tightening of the second nut 2 against the first nut 1, the projections 12 are provided in the shape of a truncated cone or a semi-ellipsoid. The truncated cone-shaped protruding portion 12 can enable the protruding portion 12 to be inserted into the concave portion 22 more smoothly and abut against the concave portion 22; the semi-ellipsoidal protruding portion 12 can smoothly enter the recessed portion 22 and simultaneously increase the contact area and the abutting strength of the protruding portion 12 and the recessed portion 22, besides the abutting point of the protruding portion top end, the side wall of the recessed portion 22 can also provide inward extrusion force for the protruding portion 12, and the first nut 1 can be fastened on the screw better without rotation.
The top diameter of the recess 22 is D 3 ，D 2 ≥D 3 It is ensured that the tip of the boss 12 can be pressed and abutted against the inner wall of the recess 22 when extending into the recess 22.
The height of the boss 12 is H 1 The depth of the recess 22 is H 2 ，H 1 ≥H 2 The height of the boss 12 is greater than the depth of the recess 22 to ensure that the upper portion of the boss 12 fully enters the recess 22.
The outer wall of the protruding portion 12 is provided with a groove 13, the groove 13 can enable the protruding portion 12 to be inserted into the recessed portion 22 more smoothly, preferably, the protruding portion is made of elastic materials such as rubber, the groove 13 is extruded and contracted by the recessed portion 22 to be closed, and the protruding portion 12 is in firm contact with the recessed portion 22 and the protruding portion 12 is in firm contact with a bolt.
Preferably, the grooves 13 are uniformly spaced, which better ensures uniform force bearing of the boss 12. The number of grooves 13 in this embodiment is 4, and may be specifically selected according to the diameter of the nut, and when the diameter of the nut is larger, the number of grooves 13 may be increased correspondingly.
Further, the end of the groove 13 is arc-shaped, and the arc-shaped groove can avoid the situation that the bulge 12 breaks when being extruded, and the strength of the bulge is improved.
In order to further reduce the possibility of the first nut 1 rotating, the inner wall of the recess 22 may be provided with corresponding protruding strips (not shown in the figure), and after the protruding strips are matched with the grooves 13, the abutting of the protruding strips and the grooves is better and firmer. In addition, the ribs can also provide inward pressing force, so that the first nut 1 is fastened with the bolt, and the first nut 1 is less likely to rotate.
The working principle of the utility model is as follows: when the nut is used, the protruding part 12 of the first nut 1 is inserted into the recessed part 22 of the second nut 2 and tightly pressed and fastened, the protruding part 12 of the first nut 1 is extruded and the groove 13 is closed, so that the first nut 1 and the bolt are fastened, and meanwhile, the first nut 1 and the second nut 2 are mutually restricted, and relative rotation between the locknut and the bolt is prevented.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (6)
1. The anti-loosening nut is characterized by comprising a first nut and a second nut, wherein the first nut is provided with a first threaded hole, and the surface of the first nut extends upwards along the periphery of the first threaded hole to form a protruding part; a second threaded hole and a concave part are arranged in the second nut, and the shape of the concave part is matched with that of the convex part; the outer wall of the protruding portion is provided with grooves which are evenly arranged at intervals.
2. The locknut of claim 1, wherein the bottom diameter of the boss is D 1 The top diameter of the protruding part is D 2 ，D 1 ＞D 2 。
3. The locknut of claim 1, wherein the boss is frustoconical or semi-ellipsoidal.
4. The locknut of claim 2, wherein the top diameter of the recess is D 3 ，D 2 ≥D 3 。
5. The locknut of claim 1, wherein the height of the boss is H 1 The depth of the concave part is H 2 ，H 1 ≥H 2 。
6. The locknut of claim 1, wherein the end of the groove is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321507719.5U CN220687807U (en) | 2023-06-13 | 2023-06-13 | Anti-loosening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321507719.5U CN220687807U (en) | 2023-06-13 | 2023-06-13 | Anti-loosening nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220687807U true CN220687807U (en) | 2024-03-29 |
Family
ID=90377469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321507719.5U Active CN220687807U (en) | 2023-06-13 | 2023-06-13 | Anti-loosening nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220687807U (en) |
-
2023
- 2023-06-13 CN CN202321507719.5U patent/CN220687807U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209278312U (en) | A kind of stop nut | |
| CN108757700A (en) | Deformation type anti-loosen screw nut component | |
| CN209654405U (en) | Deformation type anti-loosen screw nut component | |
| CN220687807U (en) | Anti-loosening nut | |
| CN209083782U (en) | A kind of stop nut with double locking mechanism | |
| CN210686569U (en) | Reverse expansion screw | |
| CN203420992U (en) | Threaded connection part | |
| CN108775325A (en) | Deformation type combines stop nut | |
| CN214424879U (en) | Locknut assembly | |
| CN209671385U (en) | Deformation type combines stop nut | |
| CN210859495U (en) | High-strength bolt structure with damping function and automobile | |
| CN210068709U (en) | Drum ear nut | |
| CN210484357U (en) | Prevent flange face bolt of conquassation | |
| CN213017205U (en) | Anti-loose nut | |
| CN210484358U (en) | Anti-loosening flange bolt | |
| CN210660971U (en) | Anti-loosening locking bolt | |
| CN204041679U (en) | Coiled hair band grommet screw | |
| CN215370564U (en) | Hexagonal conical pad three-point anti-loose riveting nut | |
| CN218480034U (en) | Anti-loosening hexagonal round nut | |
| CN214940707U (en) | Anti-loosening base and anti-loosening device | |
| CN211343675U (en) | Improved bulb nut for vehicle lamp | |
| CN217682746U (en) | Nut | |
| CN217682745U (en) | Anti-loosening device | |
| CN218780612U (en) | Multiple anti-loosening flange nut | |
| CN219840916U (en) | Nut structure capable of preventing loosening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |