CN214063514U - Locknut composite set - Google Patents
Locknut composite set Download PDFInfo
- Publication number
- CN214063514U CN214063514U CN202022691293.6U CN202022691293U CN214063514U CN 214063514 U CN214063514 U CN 214063514U CN 202022691293 U CN202022691293 U CN 202022691293U CN 214063514 U CN214063514 U CN 214063514U
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- China
- Prior art keywords
- locknut
- base body
- protruding part
- fastening nut
- diameter
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Abstract
A locknut combination device comprises a fastening nut and a locknut; the fastening nut comprises a base body, the base body is provided with a threaded hole, the vertex angle of the outer edge of the base body is positioned on the same virtual circle, a cylindrical protruding part extends integrally along one side of the base body, the protruding part is coaxial with the base body, the outer diameter of the protruding part is smaller than the diameter of the virtual circle, the inner surface and the outer surface of the protruding part are both provided with threads, and the inner diameter of the protruding part is the same as the diameter of the threaded hole of the base body and has the same grains; a plurality of locking teeth with conical surfaces are arranged at intervals around the edge of the protruding part, and the locking teeth are provided with smooth inner surfaces; the locknut has the screw hole, and this screw hole contains screw thread section and conical smooth section, and the tapering of smooth section is greater than the tapering of the conical surface of lock tooth, and when locknut screwed on fastening nut, the screw thread matching spiro union of screw thread section and bellying surface, smooth section can oppress the locking tooth and tighten up to its axis. The device has good locking function, is not easy to lose efficacy and is easy to disassemble and reusable.
Description
Technical Field
The utility model relates to a nut fastener technical field, concretely relates to locknut composite set.
Background
Once the bolt connection in mechanical equipment is loosened, the bolt can fall off to cause great potential safety hazard, or the loosening pretightening force of the bolt is reduced to cause the fatigue life of the bolt connection to be greatly shortened. Therefore, proper anti-loosening measures are selected in the design to ensure that the bolt is not loosened in practical use. Common anti-loosening measures in design are friction anti-loosening and permanent anti-loosening. The common permanent anti-loosening method comprises the following steps: welding, riveting, gluing, etc. The method mostly destroys the threaded fastener when being disassembled, and cannot be used repeatedly. The common friction anti-loosening methods are as follows: using a gasket, a self-locking nut, a double nut, etc. This method has some effect, but the friction force changes when the vibration is too large, resulting in failure.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems in the prior art, that is, to solve the technical problem of how to provide a reusable locknut that is not easy to fail, the utility model provides a locknut assembly, which comprises a fastening nut and a locknut;
the fastening nut comprises a regular polygonal base body, the base body is provided with a threaded hole, the vertex angle of the outer edge of the base body is positioned on the same virtual circle, a cylindrical protruding part extends integrally along one side of the base body, the protruding part is coaxial with the base body, the outer diameter of the protruding part is smaller than the diameter of the virtual circle, the inner surface and the outer surface of the protruding part are provided with threads, the inner diameter of the protruding part is the same as the diameter of the threaded hole of the base body, and the threads on the inner surface of the protruding part are the same as the lines of the threaded hole of the base body; a plurality of locking teeth with conical surfaces are arranged on one side, far away from the base body, of the protruding portion at intervals around the edge of the protruding portion; the locking teeth have smooth inner surfaces;
the locknut is provided with a threaded hole, the threaded hole comprises a threaded section and a conical smooth section, the taper of the smooth section is larger than that of the conical surface of the locking tooth, when the locknut is screwed on the fastening nut, the threaded section is matched with the thread on the outer surface of the protruding part for screwing, and the smooth section can press the locking tooth to tighten up towards the axis of the locking tooth.
Preferably, the length of the smooth section is less than the length of the locking tooth.
Preferably, the number of locking teeth is 4 or 6.
Preferably, the fastening nut and the locknut are both regular hexagons.
The utility model has the advantages that:
the utility model provides a locknut composite set has fine locking function when using, is difficult for becoming invalid, and dismantles easily, but repeatedly usable reduces later maintenance cost and work load.
Drawings
Fig. 1 is a schematic view of the main structure of the locknut assembly of the present invention;
fig. 2 is a schematic perspective view of the fastening nut of the present invention;
fig. 3 is a schematic cross-sectional structural view of the fastening nut of the present invention;
fig. 4 is a schematic perspective view of the locknut of the present invention;
fig. 5 is a schematic cross-sectional structural view of the locknut of the present invention;
fig. 6 to 8 are schematic views of the usage status of the locknut assembly of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 illustrates a main structure of a locknut assembly. As shown in fig. 1, the utility model provides a locknut composite set includes fastening nut 10 and locknut 20, and fastening nut 10 and locknut 20 are regular hexagon. The locknut assembly is used in conjunction with a bolt 31 to secure the object to be secured.
Referring to fig. 2 and 3, the main structure of the fastening nut is exemplarily shown. The fastening nut 10 comprises a regular polygonal base body 11, the base body 11 having a threaded bore 14. The apex angle of the outer edge of the base body 11 is located on the same virtual circle, and a cylindrical boss 12 integrally extends along one side of the base body 11. The boss 12 is coaxial with the base 11, the outer diameter of the boss 12 is smaller than the diameter of the virtual circle, and the inner and outer surfaces of the boss 12 are both provided with threads. The inner diameter of the boss 12 is the same as the diameter of the threaded hole 14 of the base 11. The thread on the inner surface of the boss 12 is the same as the thread on the threaded hole 14 of the base 11. Wherein, on the side of the protruding part 12 far away from the base body 11, a plurality of locking teeth 13 with conical surfaces are arranged at intervals around the edge of the protruding part 12, and the number of the locking teeth 13 is preferably 4 or 6. The locking teeth 13 have a smooth inner surface. It should be noted that the number of the locking teeth 13 is plural, and other numbers of the locking teeth 13 may be provided according to the specification of the fastening nut 10, and the number is not limited.
Referring to fig. 4 and 5, the main structure of the locknut is exemplarily shown. The locknut 20 has a threaded bore 21, the threaded bore 21 comprising a threaded section 22 and a conical smooth section 23. The taper of the smooth section 23 is greater than the taper of the tapered surface of the locking tooth 13. The length of the smooth section 23 is smaller than the length of the locking tooth 13. When the locknut 20 is screwed on the fastening nut 10, the threaded section 22 is screwed with the thread on the outer surface of the boss 12, and the smooth section 23 can press the locking teeth 13 to tighten towards the axis.
Referring to fig. 6 to 8, a usage of the locknut assembly is exemplarily shown. The locknut assembly cooperates with the bolt 31 to secure the object to be secured. The object to be fixed is a double-layer plate 30, and the double-layer plate 30 is provided with corresponding through holes. When the double-layer plate is used, the bolt 31 penetrates through the through hole from one side of the double-layer plate 30, the fastening nut 10 is firstly screwed on the bolt 31 from the other side, then the locknut 20 is screwed on the fastening nut 10, and in the screwing process, as the taper of the smooth section 23 is larger than that of the conical surface of the locking tooth 13, the smooth section 23 can press the locking tooth 13 to tighten towards the axis, so that the locking tooth 13 is tightly pressed on a screw rod. Because the inner surface of the locking tooth 13 is smooth, the locking tooth can be in line-surface contact with the thread on the screw rod to form a good locking effect, and the nut is prevented from loosening. The mode of utilizing locking tooth 13 to clamp the screw rod for locking can well fix the nut and play a role in preventing looseness. This is different from the conventional method of merely increasing the frictional force between the threads because the frictional force is reduced when the locknut 20 is slightly loosened by merely increasing the frictional force of the threads, and the loosening of the fastening nut 10 may occur. And the utility model discloses a mode, because be equipped with screw thread spiro union section and locking tooth 13 chucking, adopt the dual function of spiro union and chucking, even locknut 20 is not hard up slightly like this, this locknut 20 composite set also can continue locking bolt well.
To sum up, the utility model provides a locknut composite set has fine locking function when using, is difficult for becoming invalid, and dismantles easily, repeatedly usable. And the later maintenance cost and the workload are reduced.
The above description is the preferred embodiment of the present invention and the technical principle applied by the same, and for those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention all belong to the protection scope of the present invention.
Claims (4)
1. A locknut assembly, wherein the assembly includes a fastening nut and a locknut;
the fastening nut comprises a regular polygonal base body, the base body is provided with a threaded hole, the vertex angle of the outer edge of the base body is positioned on the same virtual circle, a cylindrical protruding part extends integrally along one side of the base body, the protruding part is coaxial with the base body, the outer diameter of the protruding part is smaller than the diameter of the virtual circle, the inner surface and the outer surface of the protruding part are provided with threads, the inner diameter of the protruding part is the same as the diameter of the threaded hole of the base body, and the threads on the inner surface of the protruding part are the same as the lines of the threaded hole of the base body; a plurality of locking teeth with conical surfaces are arranged on one side, far away from the base body, of the protruding portion at intervals around the edge of the protruding portion; the locking teeth have smooth inner surfaces;
the locknut is provided with a threaded hole, the threaded hole comprises a threaded section and a conical smooth section, the taper of the smooth section is larger than that of the conical surface of the locking tooth, when the locknut is screwed on the fastening nut, the threaded section is matched with the thread on the outer surface of the protruding part for screwing, and the smooth section can press the locking tooth to tighten up towards the axis of the locking tooth.
2. The locknut assembly of claim 1 wherein the length of the smooth section is less than the length of the locking teeth.
3. The locknut assembly of claim 2 wherein the number of locking teeth is 4 or 6.
4. The locknut assembly of claim 1 or 2 wherein the fastening nut and locknut are both regular hexagons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022691293.6U CN214063514U (en) | 2020-11-19 | 2020-11-19 | Locknut composite set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022691293.6U CN214063514U (en) | 2020-11-19 | 2020-11-19 | Locknut composite set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063514U true CN214063514U (en) | 2021-08-27 |
Family
ID=77401988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022691293.6U Active CN214063514U (en) | 2020-11-19 | 2020-11-19 | Locknut composite set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183454A (en) * | 2021-12-17 | 2022-03-15 | 张家陶 | Interlocking type locknut |
-
2020
- 2020-11-19 CN CN202022691293.6U patent/CN214063514U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183454A (en) * | 2021-12-17 | 2022-03-15 | 张家陶 | Interlocking type locknut |
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