CN210290449U - Anti-loose nut - Google Patents
Anti-loose nut Download PDFInfo
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- CN210290449U CN210290449U CN201920472464.0U CN201920472464U CN210290449U CN 210290449 U CN210290449 U CN 210290449U CN 201920472464 U CN201920472464 U CN 201920472464U CN 210290449 U CN210290449 U CN 210290449U
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- nut
- screw
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- screw rod
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Abstract
The utility model relates to a locknut, it is used by the combination of female nut and convex nut, and female nut and convex nut still have the screw thread that the pitch of mutually supporting is greater than screw rod pitch except having with screw rod complex screw thread, and the screw rod is crowded tight when female nut and convex nut spin on the screw rod to reach locking effect.
Description
Technical Field
The utility model relates to a connection and locking of bolt, especially a locknut.
Background
The bolt connection is widely applied to daily life and industrial production and manufacture, and the loosening of the bolt and the nut due to external force action such as vibration, impact and the like can cause equipment reliability reduction, service life reduction, early damage and the like, and serious accidents such as casualties and the like can be caused in serious cases, so the reliability of the bolt connection, particularly the loosening prevention of the nut at a key part is important. The bolt generally adopts methods such as double nuts, spring washers, thread locking glue, cotter pins, slotted nuts, stop washers and the like to prevent the bolt and the nut from loosening.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming the defects of the prior art, the utility model provides a nut component which is convenient to disassemble and assemble and has good loosening effect.
The solution is as follows: a locknut is used by combining a female nut and a male nut; the screw pitch of the matching part of the female nut and the screw is equal to that of the screw; the screw pitch of the part of the convex nut matched with the screw is equal to that of the screw; the screw pitches of the matching parts of the female nut and the male nut are equal and larger than that of the screw. The concave nut and the convex nut have appearance geometrical shapes which are convenient for tool disassembly and assembly on the premise of ensuring the strength and the anti-loosening effect;
the speed of the female nut and the male nut approaching each other when screwing is greater than the moving speed of the female nut and the male nut on the screw, so that a inward extrusion force is generated on the screw, and the extrusion force prevents the female nut and the male nut from freely rotating on the screw; the pressing force of the convex nut on the workpiece can be reasonably applied according to actual needs, so that the proper pre-tightening pressure of the bolt on the workpiece is ensured; the tightening force of the female nut and the male nut on the screw can be reasonably applied according to the requirement, so that the anti-loosening strength of the female nut and the male nut is ensured; according to actual needs, the pressure angle of the thread can be flexibly designed.
In the technical scheme, the nut adopts a female nut and a male nut dual component, the female nut and the male nut are screwed with each other besides being screwed with the screw rod, the screw pitch of the screwed part of the female nut and the male nut and the screw rod is equal to that of the screw rod, the screw pitch of the screwed part of the female nut and the male nut is larger than that of the screw rod, and both the female nut and the male nut can flexibly rotate on the screw rod before the female nut and the male nut are screwed; when the female nut and the male nut are screwed, the speed for enabling the female nut and the male nut to approach is higher than the speed for enabling the female nut and the male nut to move on the screw, so that the female nut and the male nut generate a inward extrusion force on the screw, the upper thread surface of the screw is tightly extruded by the lower contact surface of the thread of the female nut, the lower thread surface of the screw is tightly extruded by the upper contact surface of the thread of the male nut, and the proper screwing force is applied to the female nut and the male nut so as to generate a proper inward extrusion force on the screw, so that the free rotation of the female nut and the male nut relative to the screw is prevented, and the anti-loosening effect is achieved.
The utility model has the advantages that: the nut is reliable and anti-loose by adopting the simple combination of the concave nut and the convex nut, and meanwhile, the nut is convenient to disassemble and assemble and can automatically compensate the abrasion of threads when being disassembled and reassembled.
Drawings
Fig. 1 is a schematic structural view of the locknut of the present invention.
In FIG. 1, the labels: 1. the device comprises a screw rod 2, a female nut 3, a male nut 4, a first workpiece 5 and a second workpiece.
Detailed Description
The following describes the present invention in further detail with reference to fig. 1.
As shown in fig. 1, a locknut is used by combining a female nut 2 and a male nut 3, the pitch of the part where the female nut 2 is engaged with a screw 1 is equal to the pitch of the screw 1, the pitch of the part where the male nut 3 is engaged with the screw 1 is equal to the pitch of the screw 1, and the pitch of the part where the female nut 2 is engaged with the male nut 3 is equal to and greater than the pitch of the screw 1. The concave nut 2 and the convex nut 3 have an appearance geometric shape which is convenient for tool disassembly and assembly on the premise of ensuring strength and anti-loosening effect.
The speed of the female nut 2 and the male nut 3 approaching each other when screwing together is greater than the moving speed of the female nut 2 and the male nut 3 on the screw 1, so that a inward extrusion force is generated on the screw 1, and the extrusion force prevents the female nut 2 and the male nut 3 from freely rotating on the screw 1; the pressing force of the convex nut 3 on the workpiece can be reasonably applied according to actual needs, so that the proper pre-tightening pressure of the bolt on the workpiece is ensured; the squeezing force of the female nut 2 and the male nut 3 on the screw rod 1 can be reasonably applied according to the requirement, so that the anti-loosening strength of the female nut group and the male nut group is ensured; according to actual needs, the pressure angle of the thread can be flexibly designed.
The male nut 3 is rotated on the screw rod 1, and the first workpiece 4 and the second workpiece 5 are pressed together (by applying proper pretightening force); the female nut 2 is rotated to be close to the male nut 3, then (applying proper pretightening force) the female nut 2 and the male nut 3 are screwed together, because the screw pitch of the matching part of the female nut 2 and the male nut 3 is larger than that of the matching part of the male nut 1, the speed of the female nut 2 and the male nut 3 approaching together is larger than the speed of the female nut 2 and the male nut 3 moving on the screw rod 1 during screwing, so that the female nut 2 and the male nut 3 are mutually tightened and tightly extrude the screw rod 1, thereby effectively preventing the female nut 2 and the male nut 3 from freely rotating on the screw rod 1 and playing a role in anti-loosening.
The above-mentioned utility model, without departing from the design concept of the present invention, the technical personnel in the field are right the various modifications and improvements made by the technical solution of the present invention should be included in the protection scope determined by the claims of the present invention.
Claims (2)
1. A locknut, it is used by female nut (2) and protruding nut (3) combination, its characterized in that: the screw pitch of the matching part of the female nut (2) and the screw rod (1) is equal to that of the screw rod (1), the screw pitch of the matching part of the male nut (3) and the screw rod (1) is equal to that of the screw rod (1), and the screw pitch of the matching part of the female nut (2) and the male nut (3) is equal to that of the screw rod (1) and larger than that of the screw rod (1).
2. The locknut of claim 1, wherein: the concave nut (2) and the convex nut (3) have the appearance geometrical shapes which are convenient for tool disassembly and assembly on the premise of ensuring the strength and the anti-loosening effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920472464.0U CN210290449U (en) | 2019-03-29 | 2019-03-29 | Anti-loose nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920472464.0U CN210290449U (en) | 2019-03-29 | 2019-03-29 | Anti-loose nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290449U true CN210290449U (en) | 2020-04-10 |
Family
ID=70067541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920472464.0U Active CN210290449U (en) | 2019-03-29 | 2019-03-29 | Anti-loose nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173499A (en) * | 2019-03-29 | 2019-08-27 | 郑州海富机电设备有限公司 | A kind of stop nut |
-
2019
- 2019-03-29 CN CN201920472464.0U patent/CN210290449U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173499A (en) * | 2019-03-29 | 2019-08-27 | 郑州海富机电设备有限公司 | A kind of stop nut |
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| GR01 | Patent grant |