CN211901232U - Anti-loose self-locking nut assembly - Google Patents
Anti-loose self-locking nut assembly Download PDFInfo
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- CN211901232U CN211901232U CN202020330891.8U CN202020330891U CN211901232U CN 211901232 U CN211901232 U CN 211901232U CN 202020330891 U CN202020330891 U CN 202020330891U CN 211901232 U CN211901232 U CN 211901232U
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- annular
- ring
- rubber
- nut
- expansion ring
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Abstract
The utility model relates to a locking self-locking nut subassembly, including nut and packing ring, the nut has the screw hole, and the nut bottom is equipped with and is greater than with the coaxial and diameter of screw hole the step hole of screw hole, the downthehole rubber that is equipped with of step rises tight circle and expansion ring, rubber rises tight circle cross-sectional shape and is the U-shaped, and the expansion ring is arranged in the annular of rubber rise tight circle, the expansion ring has annular open-ended, cross-sectional shape for annular deformable ring that appears for the top, the packing ring includes the annular gasket main part, and the axial terminal surface of annular gasket main part is equipped with the wedging arch of cross-sectional shape for invering the V-arrangement, wedges in the arch stretches into the annular opening of expansion ring along the opening of rubber rise tight circle, wedges protruding conflict in annular open-ended edge. Good anti-loosening effect.
Description
Technical Field
The utility model relates to a fastener technical field, what exactly said is locknut with self-locking function.
Background
Nuts and bolts are common fasteners. When a common nut is used for fixing a mechanical part in a bolt matching manner, the time is long due to mechanical movement or vibration, and the nut is easy to loosen, so that the fixed part is loosened or abnormally loud. For solving the not hard up problem of nut, the tradition could the gasket is locking, but the locking effect of tradition gasket is not enough.
Disclosure of Invention
The utility model discloses the invention purpose: for overcoming the defect that prior art exists, the utility model provides a locking self-locking nut subassembly that locking effect is good.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a locknut assembly that auto-locks, includes nut and packing ring, the nut has screw hole, its characterized in that: nut bottom be equipped with the screw hole coaxial and the diameter is greater than the step hole of screw hole, the step downthehole rubber rises tight circle and expansion ring that is equipped with, rubber rises tight circle cross-sectional shape and is the U-shaped, the expansion ring is arranged rubber in and rises the annular of tight circle in, the expansion ring has annular open-ended, cross-sectional shape for annular deformable ring for the top, the packing ring includes the annular packing ring main part, and the axial terminal surface of annular packing ring main part is equipped with the wedging arch of cross-sectional shape for invering the V-arrangement, wedges in protruding opening that rises tight circle along rubber stretches into the annular open-ended edge of expansion ring, wedges the arch and contradicts in annular open-ended edge.
Through adopting above-mentioned technical scheme, when nut screw in to stroke end position, wedging protruding wedging in the annular opening of expansion ring and roof pressure expansion ring both sides wall realization expansion ring both sides expansion of packing ring, the expansion ring of expansion supports the both sides that press the rubber tight ring that rises, thereby make the extrusion of rubber tight ring that rises reach lock nut and screw rod on screw rod and nut, realize locking, the expansion ring can provide good rising, and the opening extrusion of expansion ring wedges on bellied lateral wall, can provide axial locking force, thereby reach good locking effect.
Preferably, the annular groove of the rubber tensioning ring is in an oval shape with a large opening and a small bottom. Under the structural design, the gasket is pressed against the expansion ring to realize a certain amount of axial displacement, and preliminary tensioning is realized under an oval structure; and the oval shape has the advantages of reliable structure and difficult tearing.
Preferably, the bottom surface of the washer is provided with radial anti-slip teeth. Under this structural design, improve locking effect.
Preferably, the axial cylinder wall of the stepped hole is provided with an annular convex rib. Under this structural design, improve nut and rubber tight circle interlock locking performance that rises.
The present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a self-locking locknut assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an expansion ring according to an embodiment of the present invention;
fig. 3 is a schematic view of a gasket according to an embodiment of the present invention.
Detailed Description
Referring to the attached drawings 1-3, the utility model discloses a locking self-locking nut component, which comprises a nut 1 and a washer 2, the nut 1 is provided with a threaded hole 11, the bottom end of the nut 1 is provided with a step hole 12 which is coaxial with the threaded hole 11 and has a diameter larger than that of the threaded hole 11, a rubber tensioning ring 3 and an expansion ring 4 are arranged in the step hole 12, the cross section of the rubber tensioning ring 3 is U-shaped, the expansion ring 4 is arranged in the annular groove 31 of the rubber tensioning ring 3, the expanding ring 4 is a deformable ring with a ring-shaped opening 41 at the top and a circular ring-shaped cross section, the gasket 2 comprises a ring gasket main body 21, the axial end face of the ring gasket main body 21 is provided with a wedging bulge 22 with an inverted V-shaped cross section, the wedging bulge 22 extends into an annular opening 41 of the expansion ring 4 along the opening of the rubber tensioning ring 3, and the wedging bulge 22 is abutted against the edge of the annular opening 41. The expansion ring 4 is made of elastic thin steel sheet through rolling and has good elasticity. Nut 1 screw in when stroke end position, the protruding 22 that wedges of packing ring 2 wedge in the annular opening of expansion ring 4 and 4 both sides walls of roof pressure expansion ring realize the expansion of 4 both sides of expansion ring, the expansion ring 4 of expansion supports the both sides that press rubber tight ring 3, thereby make the extrusion of rubber tight ring 3 that rises reach lock nut 1 and screw rod on screw rod and nut 1, realize locking, expansion ring 4 can provide good rising, and on the opening extrusion of expansion ring 4 wedges the protruding 22 lateral wall, can provide axial locking force, thereby reach good locking effect.
Further, the ring groove 31 of the rubber tensioning ring 3 is in an oval shape with a large opening and a small bottom. The gasket 2 presses the expansion ring 4 to realize a certain amount of axial displacement, and preliminary tensioning is realized under an oval structure; and the oval shape has the advantages of reliable structure and difficult tearing.
The bottom surface of the washer 2 is provided with radial anti-slip teeth 23. The anti-skidding teeth on the bottom surface of the washer 2 are meshed with the fixed part, so that the anti-loosening effect is improved.
In this embodiment, an annular rib 121 is disposed on an axial cylinder wall of the stepped hole 12. The locking performance of the engagement of the nut 1 and the rubber tensioning ring 3 is improved.
Claims (4)
1. A locknut assembly that auto-locks, includes nut and packing ring, the nut has screw hole, its characterized in that: nut bottom be equipped with the screw hole coaxial and the diameter is greater than the step hole of screw hole, the step downthehole rubber rises tight circle and expansion ring that is equipped with, rubber rises tight circle cross-sectional shape and is the U-shaped, the expansion ring is arranged rubber in and rises the annular of tight circle in, the expansion ring has annular open-ended, cross-sectional shape for annular deformable ring for the top, the packing ring includes the annular packing ring main part, and the axial terminal surface of annular packing ring main part is equipped with the wedging arch of cross-sectional shape for invering the V-arrangement, wedges in protruding opening that rises tight circle along rubber stretches into the annular open-ended edge of expansion ring, wedges the arch and contradicts in annular open-ended edge.
2. The locknut assembly of claim 1 wherein: the annular groove of the rubber tensioning ring is in an oval shape with a large opening and a small bottom.
3. The locknut assembly of claim 1 wherein: the bottom surface of the washer is provided with radial anti-skidding teeth.
4. The locknut assembly of claim 1 wherein: and an annular convex rib is arranged on the axial cylinder wall of the stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020330891.8U CN211901232U (en) | 2020-03-16 | 2020-03-16 | Anti-loose self-locking nut assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020330891.8U CN211901232U (en) | 2020-03-16 | 2020-03-16 | Anti-loose self-locking nut assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901232U true CN211901232U (en) | 2020-11-10 |
Family
ID=73321568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020330891.8U Active CN211901232U (en) | 2020-03-16 | 2020-03-16 | Anti-loose self-locking nut assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211901232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838047A (en) * | 2022-05-19 | 2022-08-02 | 浙江洪扬汽车零部件有限公司 | Anti-loosening screw for mechanical equipment |
-
2020
- 2020-03-16 CN CN202020330891.8U patent/CN211901232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838047A (en) * | 2022-05-19 | 2022-08-02 | 浙江洪扬汽车零部件有限公司 | Anti-loosening screw for mechanical equipment |
| CN114838047B (en) * | 2022-05-19 | 2024-02-06 | 浙江洪扬汽车零部件有限公司 | Lock screw for mechanical equipment |
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| GR01 | Patent grant |