CN213017219U - Fastener capable of preventing loosening - Google Patents
Fastener capable of preventing loosening Download PDFInfo
- Publication number
- CN213017219U CN213017219U CN202021837532.8U CN202021837532U CN213017219U CN 213017219 U CN213017219 U CN 213017219U CN 202021837532 U CN202021837532 U CN 202021837532U CN 213017219 U CN213017219 U CN 213017219U
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- CN
- China
- Prior art keywords
- nut
- stop
- fixing
- thread portion
- fastener
- 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.)
- Expired - Fee Related
Links
- 230000002265 prevention Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 description 1
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model discloses a fastener that can prevent not hard up, including mutually supporting bolt, nut, the nut includes fixation nut, the lock nut that the internal diameter is different, the bolt include with fixation nut screw complex fixed thread portion, with lock nut complex lock thread portion, fixed thread portion is opposite with lock thread portion's screw thread direction of rotation, fixation nut and lock nut cooperation. The utility model discloses a but two coaxial settings fixing nut, the lock nut of screw thread opposite direction of rotation form the whole of a linkage, have realized preventing the not hard up beneficial effect of fastener. The utility model discloses simple structure, convenient to use has reduced the preparation technology, has reduced the maintenance cost, has strengthened the stability of fastener, and the practicality is strong, has higher commercial value.
Description
Technical Field
The utility model relates to a bolt technical field specifically indicates a fastener that can prevent to become flexible.
Background
A cylindrical threaded fastener for a bolt, a machine part, and a nut. A fastener consisting of a head and a screw is matched with a nut and used for fastening and connecting two parts with through holes. Machines operating at high speeds produce continuously varying degrees of vibration. In long-term machine operation, vibration can cause loosening of bolts and nuts used for fastening machines, and the loosened nut and bolt can cause serious accidents of machine damage and human death. Therefore, loosening of the nut is a very important issue in the mechanical field. At present, researchers in various countries are actively researching bolts which are simple in structure and capable of preventing loosening so as to avoid accidents of machine damage and human death again and cause a great amount of loss of human resources and money.
Therefore, a bolt with a simple structure and capable of preventing loosening needs to be researched and solved urgently.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a technical scheme does: the anti-loosening fastener comprises a bolt and a nut which are matched with each other, wherein the nut comprises a fixed nut and a stop nut with different inner diameters, the bolt comprises a fixed thread part and a stop thread part, the fixed thread part is in threaded fit with the fixed nut, the stop thread part is in threaded fit with the stop nut, the thread rotating direction of the fixed thread part is opposite to that of the stop thread part, and the fixed nut is matched with the stop nut.
In a refinement, the inner diameter of the fastening nut is greater than the inner diameter of the retaining nut, and the outer diameter of the fastening nut is the same as the outer diameter of the retaining nut.
As a refinement, the retaining nut is arranged between the stop nut and the bolt head, the retaining thread portion is arranged between the stop thread portion and the bolt head, and the diameter of the retaining thread portion is larger than the diameter of the stop thread portion.
As an improvement, one side of the fixing nut, which is close to the stop nut, is provided with a groove, one side of the stop nut, which is close to the fixing nut, is provided with a bulge matched with the groove, and the groove and the bulge are uniformly distributed.
As an improvement, a first ratchet is arranged on one side, close to the stop nut, of the fixing nut, and a second ratchet matched with the first ratchet is arranged on one side, close to the fixing nut, of the stop nut.
After the structure more than adopting, the utility model has the advantages of as follows: the utility model discloses a but two coaxial settings fixing nut, the lock nut of screw thread opposite direction of rotation form the whole of a linkage, have realized preventing the not hard up beneficial effect of fastener. The utility model discloses simple structure, convenient to use has reduced the preparation technology, has reduced the maintenance cost, has strengthened the stability of fastener, and the practicality is strong, has higher commercial value.
Drawings
Fig. 1 is a schematic structural view of a fastener capable of preventing loosening according to the present invention.
Fig. 2 is a schematic structural view of a fastener bolt capable of preventing loosening according to the present invention.
Fig. 3 is a schematic structural view of a fixing nut according to an embodiment of the anti-loosening fastening device of the present invention.
Fig. 4 is a schematic view of a stop nut according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a second fixing nut of an embodiment of a loosening prevention fastener according to the present invention.
Fig. 6 is a schematic structural view of a second stop nut of an embodiment of a loosening prevention fastener according to the present invention.
As shown in the figure: 1. 1.1 of bolt, 1.2 of fixed thread part, 2 of stop thread part, 2 of nut, 2.1 of fixed nut, 2.11 of groove, 2.12 of ratchet I, 2.2 of stop nut, 2.21 of bulge, 2.22 of ratchet II.
Detailed Description
The first embodiment is as follows:
with reference to fig. 1 to 4, the anti-loosening fastener comprises a bolt 1 and a nut 2 which are matched with each other, wherein the nut 2 comprises a fixing nut 2.1 and a stop nut 2.2 with different inner diameters, the bolt 1 comprises a fixing thread part 1.1 in threaded fit with the fixing nut 2.1 and a stop thread part 1.2 in threaded fit with the stop nut 2.2, the thread rotating directions of the fixing thread part 1.1 and the stop thread part 1.2 are opposite, and the fixing nut 2.1 is matched with the stop nut 2.2.
In a preferred embodiment of the present embodiment, the inner diameter of the fixing nut 2.1 is larger than the inner diameter of the stop nut 2.2, and the outer diameter of the fixing nut 2.1 is the same as the outer diameter of the stop nut 2.2.
As a preferred embodiment of the present embodiment, the fixing nut 2.1 is disposed between the stop nut 2.2 and the head of the bolt 1, the fixing thread portion 1.1 is disposed between the stop thread portion 1.2 and the head of the bolt 1, and the diameter of the fixing thread portion 1.1 is larger than that of the stop thread portion 1.2.
As a preferred embodiment of this embodiment, a groove 2.11 is provided on one side of the fixing nut 2.1 close to the stop nut 2.2, a protrusion 2.21 matched with the groove 2.11 is provided on one side of the stop nut 2.2 close to the fixing nut 2.1, and the grooves 2.11 and the protrusions 2.21 are uniformly arranged.
The first embodiment is as follows:
with reference to fig. 1, 2, 5 and 6, the anti-loosening fastener includes a bolt 1 and a nut 2 which are matched with each other, the nut 2 includes a fixing nut 2.1 and a stop nut 2.2 with different inner diameters, the bolt 1 includes a fixing thread portion 1.1 which is in threaded fit with the fixing nut 2.1 and a stop thread portion 1.2 which is in threaded fit with the stop nut 2.2, the thread rotation directions of the fixing thread portion 1.1 and the stop thread portion 1.2 are opposite, and the fixing nut 2.1 is matched with the stop nut 2.2.
In a preferred embodiment of the present embodiment, the inner diameter of the fixing nut 2.1 is larger than the inner diameter of the stop nut 2.2, and the outer diameter of the fixing nut 2.1 is the same as the outer diameter of the stop nut 2.2.
As a preferred embodiment of the present embodiment, the fixing nut 2.1 is disposed between the stop nut 2.2 and the head of the bolt 1, the fixing thread portion 1.1 is disposed between the stop thread portion 1.2 and the head of the bolt 1, and the diameter of the fixing thread portion 1.1 is larger than that of the stop thread portion 1.2.
As a preferred embodiment of the present embodiment, a first ratchet 2.12 is disposed on a side of the fixing nut 2.1 close to the stop nut 2.2, and a second ratchet 2.22 engaged with the first ratchet 2.12 is disposed on a side of the stop nut 2.2 close to the fixing nut 2.1.
The utility model discloses when concrete implementation, twist fixation nut earlier, then twist the stop nut of opposite turning to, mutually support recess and arch between fixation nut and the stop nut need certain moment can only twist the stop nut complex position. At this time, the fixing nut and the stop nut form a linked whole, and the looseness can be effectively prevented.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (5)
1. The fastener capable of preventing loosening is characterized by comprising a bolt and a nut which are matched with each other, wherein the nut comprises a fixed nut and a stop nut with different inner diameters, the bolt comprises a fixed thread part and a stop thread part, the fixed thread part is in threaded fit with the fixed nut, the stop thread part is in threaded fit with the stop nut, the thread rotating direction of the fixed thread part is opposite to that of the stop thread part, and the fixed nut is matched with the stop nut.
2. The anti-loosening fastener according to claim 1, wherein the inner diameter of the fixing nut is larger than the inner diameter of the stop nut, and the outer diameter of the fixing nut is the same as the outer diameter of the stop nut.
3. The loosening prevention fastener of claim 1, wherein the fixing nut is disposed between the stop nut and the bolt head, the fixing thread portion is disposed between the stop thread portion and the bolt head, and a diameter of the fixing thread portion is larger than a diameter of the stop thread portion.
4. The anti-loosening fastener according to claim 1, wherein a groove is formed in one side of the fixing nut close to the stop nut, a protrusion matched with the groove is formed in one side of the stop nut close to the fixing nut, and the grooves and the protrusions are uniformly distributed.
5. The anti-loosening fastener according to claim 1, wherein a first ratchet is arranged on one side of the fixing nut close to the stop nut, and a second ratchet matched with the first ratchet is arranged on one side of the stop nut close to the fixing nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021837532.8U CN213017219U (en) | 2020-08-28 | 2020-08-28 | Fastener capable of preventing loosening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021837532.8U CN213017219U (en) | 2020-08-28 | 2020-08-28 | Fastener capable of preventing loosening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017219U true CN213017219U (en) | 2021-04-20 |
Family
ID=75471386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021837532.8U Expired - Fee Related CN213017219U (en) | 2020-08-28 | 2020-08-28 | Fastener capable of preventing loosening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017219U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526379A (en) * | 2022-03-02 | 2022-05-24 | 冀州中意复合材料股份有限公司 | Air pipe joint and construction method |
-
2020
- 2020-08-28 CN CN202021837532.8U patent/CN213017219U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526379A (en) * | 2022-03-02 | 2022-05-24 | 冀州中意复合材料股份有限公司 | Air pipe joint and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 |