CN201606386U - Self-locking nut - Google Patents
Self-locking nut Download PDFInfo
- Publication number
- CN201606386U CN201606386U CN2009202771179U CN200920277117U CN201606386U CN 201606386 U CN201606386 U CN 201606386U CN 2009202771179 U CN2009202771179 U CN 2009202771179U CN 200920277117 U CN200920277117 U CN 200920277117U CN 201606386 U CN201606386 U CN 201606386U
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- CN
- China
- Prior art keywords
- nut
- thread
- moving
- movable
- quiet
- 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
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model relates to a self-locking nut belonging to the field of engineering parts. The front end of the inner wall of a movable nut is machined with a movable front thread, and the rear end thereof is machined with a movable rear thread; a fixed external thread of a fixed nut is screwed together with the movable front thread of the movable thread, and the movable rear thread of the movable nut is consistent with the fixed internal thread of the fixed nut; in the movable nut, the movable rear thread of the movable nut is different from the movable front thread thereof in pitch, thus forming self locking and preventing the looseness of the nuts through the interlocking force generated between the threads of the two nuts during working process.
Description
Technical field
The present invention relates to the fastener areas of engineering part, at length say it is a kind of nut that can auto lock.
Background technique
As everyone knows,, be applied in all trades and professions, closely linked to each other with our life along with the generation of threaded connector.Especially most widely used in mechanical industry, various Connecting format are innumerable, various screw-nuts, and specification is the most complete, uses at most.Become requisite part in the national product.But rise since that time that threaded connector produces, have a problem perplexing us always, that is exactly the locking thread problem.When screw with after nut is connected, owing to reasons such as mechanical vibration, after work a period of time, very easily produce the phenomenon that gets loose.Extraneous vibration is big more, and this phenomenon is serious more, thereby causes security incident hidden danger, and especially at the thread looseness of key position and even come off, that consequence that causes is unthinkable.Therefore multiple locking form occurred, mainly be divided into two big classes: it is locking locking with machinery to rub, and the locking mode that rubs has pair jacking nut, spring washer, and the locking mode of machinery has cotter pin and hexagon slotted nut, lock washer.More than various locking methods, pluses and minuses are respectively arranged, but above various locking form reliability during operation all with the vibration severe degree aggravation reduce.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of self-locking nut, along with mechanical vibration, and locking gradually, not only anti-loosing effect is good, and is applicable to abominable work condition environment.
The technical solution adopted for the present invention to solve the technical problems is: a kind of self-locking nut, the inwall front end of moving nut is processed with moving preceding thread, the rear inner wall of moving nut is processed with moving rear thread, the quiet outside thread of quiet nut and the moving preceding thread of moving nut spin together, the moving rear thread of moving nut is consistent with the screw thread of the quiet internal thread of quiet nut, the moving rear thread of moving nut is different with the tooth of moving preceding thread distance, forms self-locking.
The beneficial effects of the utility model are that simple in structure, locking effect is good, can produce coupling mechanism force in the course of the work automatically, can not get loose, and guarantees that attachment security is reliable.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a user mode schematic representation of the present invention.
1. screw rods among the figure, 2. locking element, 3. quiet nut, 4. moving nut, 5. quiet internal thread, 6. quiet outside thread, 7. moving preceding thread, 8. moving rear thread, 9. outside thread.
Embodiment
Shown in Figure 1, the inwall front end of moving nut 4 is processed with moving preceding thread 7, the rear inner wall of moving nut 4 is processed with moving rear thread 8, the quiet outside thread 6 of quiet nut 3 spins together with the moving preceding thread 7 of moving nut 4, the moving rear thread 8 of moving nut 4 is consistent with the screw thread of the quiet internal thread 5 of quiet nut 3, the moving rear thread 8 of moving nut 4 is different with the tooth of moving preceding thread 7 distance, prevents nut loosening by the interlocking power that produces between two nut threads in the working procedure.
The outside thread 9 of screw rod 1 spins together with the quiet internal thread 5 of quiet nut 3 in Fig. 2, the inwall front end of moving nut 4 is processed with moving preceding thread 7, the rear inner wall of moving nut 4 is processed with moving rear thread 8, the quiet outside thread 6 of quiet nut 3 spins together with the moving preceding thread 7 of moving nut 4, the moving rear thread 8 of moving nut 4 spins together with the outside thread 9 of screw rod 1, and the moving rear thread 8 of moving nut 4 is different with the tooth of moving preceding thread 7 distance.
The using process that the present invention uses, the installation process of nut is carried out in two steps.The first step connects quiet nut 3 earlier with moving nut 4, together screw in screw rod 1, and its mounting type is identical with plain nut.And reach torque demand according to lashing force, then quiet nut 3 is unclamped half-turn in the other direction.The moving nut 4 of second step joint will move nut 4 and transfer pine.Because moving nut 4 is transferred in the process of pine, can pass to quiet nut 3 one rightabout power, i.e. coupling mechanism forces under externally threaded effect.Break away from quiet nut 3 for fear of moving nut 4, the moving rear thread 8 that therefore will move nut 4 is processed into different tooth distances with moving preceding thread 7.Because two-part screw thread difference, two nuts just can not break away from loosening process.
After screwing, a square thread stops.Then from the quiet nut 3 of new locking, because the screw thread interlocking.To cause two nuts to move simultaneously.Because quiet nut 3 effective rotating amounts are less than moving nut 4.Can guarantee that sound nut 3 can not break away from,, promptly reach torque demand this moment of stopping the rotation when quiet nut 3 rotating amounts reach a circle half.Installation process finishes.
When nut in the course of the work since the vibration will produce several movement tendencies.When producing when screw rod 1 turns clockwise trend, quiet nut 3 is a locking state.And moving nut 4 is locking state, and moving for a long time nut 4 might become flexible around quiet nut 3 outside thread directions and tighten, but this kind state can not make quiet nut 3 become flexible, and can become tight on the contrary.When producing when screw rod 1 is rotated counterclockwise trend and since two nuts in fastening process, certainly lead to pitch error therefore not can with the time move.Because moving nut 4 is the outer nut of quiet nut 3, loosening priority is certainly greater than quiet nut 3.Therefore when moving nut 4 when screw rod 1 is rotated counterclockwise, because the power that quiet nut 3 externally threaded effects just make quiet nut 3 generations lock.Therefore guaranteed the reliability of locking.
The dismounting of nut, the moving nut 4 of rotation is earlier drawn close two nuts, and spanner is installed in the seam crossing of two nuts then, and two nuts are rotated simultaneously.
Claims (1)
1. self-locking nut, it is characterized in that: the inwall front end of moving nut is processed with moving preceding thread, the rear inner wall of moving nut is processed with moving rear thread, the quiet outside thread of quiet nut and the moving preceding thread of moving nut spin together, the moving rear thread of moving nut is consistent with the screw thread of the quiet internal thread of quiet nut, the moving rear thread of moving nut is different with the tooth of moving preceding thread distance, forms self-locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202771179U CN201606386U (en) | 2009-12-04 | 2009-12-04 | Self-locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202771179U CN201606386U (en) | 2009-12-04 | 2009-12-04 | Self-locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606386U true CN201606386U (en) | 2010-10-13 |
Family
ID=42951092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202771179U Expired - Fee Related CN201606386U (en) | 2009-12-04 | 2009-12-04 | Self-locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201606386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114433A (en) * | 2015-07-13 | 2015-12-02 | 东西方航空科技发展(宁波)有限公司 | Locking nut piece |
-
2009
- 2009-12-04 CN CN2009202771179U patent/CN201606386U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114433A (en) * | 2015-07-13 | 2015-12-02 | 东西方航空科技发展(宁波)有限公司 | Locking nut piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20111204 |