CN218582037U - Self-locking nut structure - Google Patents
Self-locking nut structure Download PDFInfo
- Publication number
- CN218582037U CN218582037U CN202222805457.2U CN202222805457U CN218582037U CN 218582037 U CN218582037 U CN 218582037U CN 202222805457 U CN202222805457 U CN 202222805457U CN 218582037 U CN218582037 U CN 218582037U
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- self
- hole
- locking nut
- frustum
- section
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Abstract
The utility model discloses a self-locking nut structure, including a bolt, a first self-locking nut, at least one elastic pin and a second self-locking nut, the bolt includes a bolt head and connects to a screw rod of bolt head, the screw rod includes a polished rod section, a levogyration thread section, a frustum section and a dextrorotation thread section that connect gradually, the second self-locking nut includes a nut body and a frustum, the nut body has a second internal thread hole with dextrorotation thread section spiro union, the frustum has a second conical hole with frustum section adaptation; the first self-locking nut is provided with a first through hole, the first through hole comprises a first internal thread hole in threaded connection with the left-handed thread section and a first conical hole matched with the frustum, the inner wall of the first conical hole is provided with at least one elastic pin hole, an elastic pin is arranged in the elastic pin hole, and the elastic pin abuts against the anti-retreating pin hole in the frustum. The utility model has the characteristics of simple structure, suitability are strong, with low costs etc.
Description
Technical Field
The utility model belongs to the technical field of the nut technique and specifically relates to a self-locking nut structure.
Background
In various industries, loosening of fastening screws is often encountered after a period of use. Among the prior art, there are a plurality of modes for preventing fastening screw is not hard up, for example two nuts, perforate on the screw rod and add round pin, cam self-locking nut etc. these modes are either not good, or processing is complicated, and it is difficult to realize the auto-lock effect. Therefore, a self-locking nut structure for preventing the fastening screw from loosening is needed.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the prior art, the utility model aims at providing a have reliable and stable auto-lock effect, never loose auto-lock nut structure.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a self-locking nut structure comprises a bolt, a first self-locking nut, at least one elastic pin and a second self-locking nut, wherein the bolt comprises a bolt head and a screw rod connected with the bolt head, the screw rod comprises a polished rod section, a left-handed thread section, a frustum section and a right-handed thread section which are sequentially connected, the second self-locking nut comprises a nut body and a frustum, the nut body is provided with a second internal thread hole in threaded connection with the right-handed thread section, and the frustum is provided with a second conical hole matched with the frustum section; the first self-locking nut is provided with a first through hole, the first through hole comprises a first internal thread hole in threaded connection with the left-handed thread section and a first conical hole matched with the frustum, the inner wall of the first conical hole is provided with at least one elastic pin hole, an elastic pin is arranged in the elastic pin hole, and the elastic pin abuts against the anti-retreating pin hole in the frustum.
Furthermore, a washer is arranged on one side of the bolt head close to the screw rod.
Furthermore, an elastic washer is arranged on one side, close to the light rod section, of the first self-locking nut.
Furthermore, four elastic pin holes are uniformly distributed on the inner wall of the first conical hole.
The utility model is characterized in that:
1. the stability and reliability are realized, and the self-locking effect is good;
2. preventing the fastening screw from loosening and never loosening.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the bolt of the present invention;
fig. 3 is a schematic structural view of a first self-locking nut of the present invention;
fig. 4 is a schematic structural view of a second self-locking nut of the present invention;
fig. 5 is a schematic diagram of the present invention.
The reference numbers in the figures are respectively:
10-bolt, 20-first self-locking nut, 40-second self-locking nut, 50-washer, 70-first workpiece and 80-second workpiece;
11-bolt head, 12-screw rod;
121-polished rod section, 122-left-handed screw section, 123-frustum section and 124-right-handed screw section;
41-nut body, 42-frustum;
411-a second internally threaded hole, 412-a second tapered hole;
21-a first internally threaded hole, 22-a first tapered hole;
221-elastic pin holes;
421-anti-back pin hole.
Detailed Description
The present invention will be described in detail with reference to specific embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. All of which belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-4, the present invention relates to a self-locking nut structure, including a bolt 10, a first self-locking nut 20, four elastic pins and a second self-locking nut 40, wherein the bolt 10 includes a cylindrical bolt head 11 and a cylindrical screw rod 12 connected to the bolt head 11, a regular hexagonal blind hole is formed on an end surface of the bolt head 11 away from the screw rod 12, and a diameter of the bolt head 11 is greater than a diameter of the screw rod 12; the screw 12 comprises a polish rod section 121, a left-handed thread section 122, a frustum section 123 and a right-handed thread section 124 which are connected in sequence, the polish rod section 121 is connected with the bolt head 11, and the diameter of the left-handed thread section 122 is larger than that of the right-handed thread section 124; the second self-locking nut 40 comprises a nut body 41 and a frustum 42, the nut body 41 is provided with a second internal threaded hole 411 screwed with the right-handed thread section 124, and the frustum 42 is provided with a second tapered hole 412 matched with the frustum section 123; the first self-locking nut 21 is provided with a first through hole, the first through hole comprises a first internal thread hole 21 screwed with the left-handed thread section 122 and a first taper hole 22 matched with the frustum 42, the inner wall of the first taper hole 22 is provided with four elastic pin holes 221, elastic pins are arranged in the elastic pin holes 221, the elastic pins abut against the anti-retreat pin holes 421 on the frustum 42, and the elastic pin holes 221 and the anti-push pin holes 421 are blind holes.
Referring to fig. 5, in the assembly of the present invention, the bolt 10 sequentially passes through the washer 50, the first workpiece 70, the second workpiece 80, the elastic washer, the first self-locking nut 40, the elastic pin is installed in the anti-loosening pin hole 421, the second self-locking nut 20 starts to be tightened, and when the second self-locking nut 20 is tightened to a certain position, the front end portion of the elastic pin enters the anti-loosening pin hole 421, so that the first self-locking nut 20 and the second self-locking nut 40 are connected into a whole; the elastic pin has outward elasticity, so the elastic pin can not automatically retract and is separated from the anti-withdrawal pin hole 421; the first self-locking nut 20 is a left-handed nut and can be loosened only by rotating rightwards, and the second self-locking nut 40 is a right-handed nut and can be loosened only by rotating leftwards; therefore, when the first self-locking nut 20 has a loosening tendency, the second self-locking nut 40 has a fastening tendency, and on the same reason, when the second self-locking nut 40 has a loosening tendency, the first self-locking nut 20 has a fastening tendency, so that the first self-locking nut 20 and the second self-locking nut 40 are never loosened, the first workpiece 70 and the second workpiece 80 are not loosened, and the self-locking nut is stable and reliable and has a good self-locking effect.
To sum up, the utility model discloses an foretell structural design solves the weak point among the prior art, has simple structure, suitability is strong, characteristics such as with low costs.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.
Claims (4)
1. A self-locking nut structure is characterized in that: the bolt comprises a bolt head and a screw rod connected with the bolt head, the screw rod comprises a polished rod section, a left-handed thread section, a frustum section and a right-handed thread section which are sequentially connected, the second self-locking nut comprises a nut body and a frustum, the nut body is provided with a second internal thread hole in threaded connection with the right-handed thread section, and the frustum is provided with a second conical hole matched with the frustum section; the first self-locking nut is provided with a first through hole, the first through hole comprises a first internal thread hole in threaded connection with the left-handed thread section and a first conical hole matched with the frustum, the inner wall of the first conical hole is provided with at least one elastic pin hole, an elastic pin is arranged in the elastic pin hole, and the elastic pin abuts against the anti-retreating pin hole in the frustum.
2. The self-locking nut structure of claim 1, wherein: one side of the bolt head close to the screw rod is provided with a gasket.
3. The self-locking nut structure of claim 1, wherein: an elastic washer is arranged on one side of the first self-locking nut close to the light rod section.
4. The self-locking nut structure of claim 1, wherein: four elastic pin holes are uniformly distributed on the inner wall of the first conical hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222805457.2U CN218582037U (en) | 2022-10-25 | 2022-10-25 | Self-locking nut structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222805457.2U CN218582037U (en) | 2022-10-25 | 2022-10-25 | Self-locking nut structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218582037U true CN218582037U (en) | 2023-03-07 |
Family
ID=85374232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222805457.2U Active CN218582037U (en) | 2022-10-25 | 2022-10-25 | Self-locking nut structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218582037U (en) |
-
2022
- 2022-10-25 CN CN202222805457.2U patent/CN218582037U/en active Active
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| GR01 | Patent grant |