CN212838889U - Anti-loose nut - Google Patents
Anti-loose nut Download PDFInfo
- Publication number
- CN212838889U CN212838889U CN202020564414.8U CN202020564414U CN212838889U CN 212838889 U CN212838889 U CN 212838889U CN 202020564414 U CN202020564414 U CN 202020564414U CN 212838889 U CN212838889 U CN 212838889U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- main
- thread
- locking
- 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
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005489 elastic deformation Effects 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model provides a locknut, locknut comprises lock nut and main nut, main nut and lock nut cover are established on the bolt and are passed through threaded connection with the bolt, main nut and lock nut fastening connection. The nut is respectively pressed on and under the bolt threads by the locking nut and the main nut, thereby eliminating the thread clearance between the nut and the bolt, eliminating the possibility of clearance change and solving the anti-loosening problem. The lower part of the locking nut is low in thread hardness and is in clearance-free fit with the external thread, and reasonable plastic deformation is generated at the part when the locking nut is locked, so that the locking nut and the main nut are integrated and are not influenced by vibration and elastic deformation, the locking nut and the main nut can be reliably pressed on two sides of the bolt thread, and a reliable anti-loosening effect is formed. The anti-loosening nut is reasonable in design, simple and reliable in structure and good in anti-loosening effect.
Description
Technical Field
The utility model relates to a machine part, concretely relates to be arranged in machinery bolted connection, prevent the not hard up lock nut of bolted connection.
Background
At present can use bolted connection often in mechanical connection, in bolted connection, the nut itself leans on the single face extrusion frictional force on the interior outer thread to be can the auto-lock, can not become flexible under general condition, but when having the circumstances such as vibration, elastic deformation appears in the connection, because the existence in thread clearance, separation can appear in interior outer thread, frictional force on the thread can disappear in the twinkling of an eye, the nut auto-lock effect is inefficacy, make the nut not hard up, bolted connection inefficacy, so prevent that the nut from becoming flexible when using bolted connection and have very important problem.
The anti-loosening technology of the nut is started from two aspects, firstly, measures such as an anti-loosening washer, a stop washer, an anti-rotation pin, glue spreading and punching are added to prevent the nut from loosening and reversing, and in some new technical schemes, tooth shapes are added to the anti-loosening washer to loosen the nut. And secondly, the nut is changed to be made into an anti-loose nut, the anti-loose nut is provided with an embedded nylon ring, a neck closing-in type and a collapsible type and the like to increase friction force for preventing loose, the axial line of the nut and the axial line of the bolt are included or deviated, or an axial deviated or deformable frustum is added, and the nut pretightening force is increased through axial deviation or conical surface expansion or contraction to prevent loose.
The single face contact problem when above technique fails direct solution threaded connection, and the unilateral increases frictional resistance and only can make the nut be difficult to dismantle more, and some techniques make the nut can't dismantle, and some locknuts structure is comparatively complicated, and the machining precision requirement is higher.
In the technical scheme of the utility model patent 201822116528.1, double nuts are adopted, two nuts are respectively pressed on two surfaces of bolt threads by one rotation of the two nuts, and a certain anti-loosening effect is achieved, but the technology has two problems, one end of the nut is locked on the bolt when the nut is locked by the rotation of the two nuts, and the other end of the nut is locked on a step of the nut, because the thread pitch has manufacturing errors, the step of the nut can lead the nut to be not tightly locked by the rotation of fixed size, or the sub-opening of the nut is locally deformed in a large shaping way, and the locking is not reliable; secondly, according to the description in the technical scheme, the forward and reverse rotation nut can not be assembled at all, or the problems of high processing difficulty, complex structure and the like exist after the subsequent structure is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a locknut, which solves the problem of looseness of the nut through reasonable structural design of the nut.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a locknut, locknut comprises lock nut and main nut, main nut and lock nut cover are established on the bolt and are passed through threaded connection with the bolt, the butt joint end of main nut and lock nut forms complete nut structure in the periphery of main nut through lock nut pressfitting.
Furthermore, the bolt is provided with external threads, and the main nut and the locking nut which are connected with the bolt are provided with internal threads.
Furthermore, one end of a main nut in butt joint with the locking nut is provided with a main nut external thread, the locking nut is provided with a locking nut internal thread matched with the main nut external thread, and the main nut and the locking nut are connected through threads to enable the locking nut to be fastened on the periphery of the main nut.
Further, the thread pitch of the internal thread of the locking nut is smaller than that of the internal thread connected with the bolt.
Furthermore, the main nut and the locking nut are in gapless fit connection.
Has the advantages that: the utility model provides a locknut, this nut compress tightly respectively on bolt thread and below by lock nut and main nut to eliminate the screw thread clearance of nut and bolt, eliminate the possibility of clearance change, solve locking problem. The lower part of the locking nut is low in thread hardness and is in clearance-free fit with the external thread, and reasonable plastic deformation is generated at the part when the locking nut is locked, so that the locking nut and the main nut are integrated and are not influenced by vibration and elastic deformation, the locking nut and the main nut can be reliably pressed on two sides of the bolt thread, and a reliable anti-loosening effect is formed. Locknut's reasonable in design has only adopted main nut and lock nut structure, and two nuts structurally only have inside and outside conventional screw thread, do not have complicated structure, and simple structure is reliable, has realized good locking effect.
Drawings
Fig. 1 is the structural schematic diagram of the locknut of the present invention.
In the figure: 1. locking the nut; 2. a bolt; 3. a main nut.
Detailed Description
The present invention is further described below with reference to specific examples, which are only exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
The utility model provides a locknut, locknut comprises lock nut 1 and main nut 3, main nut 3 and lock nut 1 cover are established on bolt 2 and are passed through threaded connection with bolt 2, the butt joint end of main nut 3 and lock nut 1 forms complete nut structure in the periphery of main nut 3 through lock nut 1 pressfitting.
The bolt 2 is provided with external threads, and the main nut 3 and the locking nut 1 which are connected with the bolt 2 are provided with internal threads.
With the one end of main nut 3 of lock nut 1 butt joint is equipped with the main nut external screw thread, be equipped with on the lock nut 1 with main nut external screw thread assorted lock nut internal thread, main nut 3 makes lock nut 1 fasten in the periphery of main nut 2 through threaded connection with lock nut 1.
The thread pitch of the internal thread of the locking nut 1 is smaller than that of the internal thread connected with the bolt 2.
The main nut 3 and the locking nut 1 are in gapless fit connection.
The working principle of the locknut is as follows: firstly, normally cooperate with bolt 2 with main nut 3 and lock, main nut 3 compresses tightly below the 2 external screw threads of bolt this moment, realize normal bolt-up function, and back screw in lock nut 1, when lock nut 1 runs into main nut 3, fixed main nut 3 utilizes the external screw thread screw in lock nut 1 on main nut 3 upper portion, because this department screw thread pitch is very little, make lock nut 1 when screw in main nut 3, lock nut 1's internal thread compresses tightly on the 2 external screw threads of bolt gradually. When the locking nut 1 is locked with the main nut 3, because the lower part of the locking nut 1 has lower thread hardness and is in clearance-free fit with the external thread of the main nut 3, the part generates reasonable plastic deformation to enable the connection to become dead connection, and reliable anti-loose connection is formed.
Claims (3)
1. The anti-loose nut is characterized by comprising a locking nut and a main nut, wherein the main nut and the locking nut are sleeved on a bolt and are in threaded connection with the bolt;
the pitch of the internal thread of the locking nut is smaller than that of the internal thread connected with the bolt;
the main nut and the locking nut are in gapless fit connection.
2. The locknut of claim 1, wherein the bolt is provided with an external thread, and the main nut and the lock nut connected to the bolt are provided with an internal thread.
3. The locknut of claim 1, wherein one end of the main nut butted with the locknut is provided with a main nut external thread, the locknut is provided with a locknut internal thread matched with the main nut external thread, and the main nut and the locknut are connected through threads to enable the locknut to be fastened on the periphery of the main nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564414.8U CN212838889U (en) | 2020-04-16 | 2020-04-16 | Anti-loose nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564414.8U CN212838889U (en) | 2020-04-16 | 2020-04-16 | Anti-loose nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212838889U true CN212838889U (en) | 2021-03-30 |
Family
ID=75151730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020564414.8U Expired - Fee Related CN212838889U (en) | 2020-04-16 | 2020-04-16 | Anti-loose nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212838889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306171A (en) * | 2020-04-16 | 2020-06-19 | 苏州经贸职业技术学院 | Anti-loose nut |
-
2020
- 2020-04-16 CN CN202020564414.8U patent/CN212838889U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306171A (en) * | 2020-04-16 | 2020-06-19 | 苏州经贸职业技术学院 | Anti-loose nut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110985516A (en) | Anti-loose bolt and nut | |
| CN205715164U (en) | Self-locking type check bolt assembly | |
| CN1987134A (en) | Threaded connection anti-loose fastener | |
| CN210769780U (en) | Anti-loose nut | |
| CN212838889U (en) | Anti-loose nut | |
| CN109340243B (en) | Lock bolt assembly | |
| CN109372880B (en) | Anti-loosening thread | |
| CN111306171A (en) | Anti-loose nut | |
| CN201944074U (en) | Self-locking nut | |
| CN202790011U (en) | Anti-loosening flange nut | |
| CN218377276U (en) | Integral type locknut | |
| CN114183454A (en) | Interlocking type locknut | |
| CN216519124U (en) | Self-changing type lock nut | |
| CN213478905U (en) | Composite double-nut anti-loose bolt | |
| CN105240380A (en) | Unidirectional rotation structure used for looseness preventing mechanical fastening mechanism | |
| CN213511615U (en) | Constant-force self-tightening anti-loose bolt | |
| CN211623927U (en) | Anti-loose bolt and nut | |
| CN205101363U (en) | From locking mechanical fastening mechanism that takes off of many screw pairs of compact form | |
| CN211009523U (en) | Spring washer | |
| CN211599240U (en) | Anti-loosening connecting pair | |
| CN211398218U (en) | Rotation-stopping and release-stopping pad and fastening connection mechanism | |
| CN112727896A (en) | Elastic self-locking nut | |
| CN113586588A (en) | Nut anti-loosening sleeve | |
| CN201090583Y (en) | Anti-loose bolt | |
| CN219413179U (en) | Anti-loose hexagonal bolt |
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: 20210330 |