CN201786897U - Locking nut - Google Patents
Locking nut Download PDFInfo
- Publication number
- CN201786897U CN201786897U CN2010202573912U CN201020257391U CN201786897U CN 201786897 U CN201786897 U CN 201786897U CN 2010202573912 U CN2010202573912 U CN 2010202573912U CN 201020257391 U CN201020257391 U CN 201020257391U CN 201786897 U CN201786897 U CN 201786897U
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- CN
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- Prior art keywords
- nut
- thread
- auxiliary
- locking
- mother
- 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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Abstract
The utility model relates to a locking nut, which belongs to the field of engineering components. An auxiliary front thread is processed at the front end on the inner wall of an auxiliary nut; an auxiliary rear thread is processed at the rear end on the inner wall of the auxiliary nut; a main external thread of a main nut is screwed together with the auxiliary front thread of the auxiliary nut; the auxiliary rear thread of the auxiliary nut is consistent with the thread of a main internal thread of the main nut; the pitch of the auxiliary rear thread and the auxiliary front thread of the auxiliary nut is different, so as to cause self-locking; and the interlocking force generated between the threads of the two nuts during the working process prevents the nut from being loosened.
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 thread link.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 the thread link produces, have a problem perplexing us always, that is exactly the locking problem of thread.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 loosening and even come off at the thread of key position, 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 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 locking nut, the inwall front end of secondary nut is processed with secondary preceding thread, the rear inner wall of secondary nut is processed with secondary back thread, the secondary preceding thread of the main external screw thread of mother nut and secondary nut spins together, the secondary back thread of secondary nut is consistent with the thread of the main internal screw thread of mother nut, the secondary back thread of pair nut is different with the tooth distance of secondary preceding thread, 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. mother nut, 4. secondary nut, 5. main internal screw thread, 6. main external screw thread, 7. secondary before thread, 8. secondary back thread, 9. external screw thread.
Embodiment
Shown in Figure 1, the inwall front end of secondary nut 4 is processed with secondary preceding thread 7, the rear inner wall of secondary nut 4 is processed with secondary back thread 8, the main external screw thread 6 of mother nut 3 spins together with the secondary preceding thread 7 of secondary nut 4, the secondary back thread 8 of secondary nut 4 is consistent with the thread of the main internal screw thread 5 of mother nut 3, the secondary back thread 8 of pair nut 4 is different with the tooth distance of secondary preceding thread 7, prevents nut loosening by the interlocking power that produces between two nut threads in the working procedure.
The external screw thread 9 of screw rod 1 spins together with the main internal screw thread 5 of mother nut 3 in Fig. 2, the inwall front end of secondary nut 4 is processed with secondary preceding thread 7, the rear inner wall of secondary nut 4 is processed with secondary back thread 8, the main external screw thread 6 of mother nut 3 spins together with the secondary preceding thread 7 of secondary nut 4, the external screw thread 9 of thread 8 and screw rod 1 spins together after the pair of secondary nut 4, and the secondary back thread 8 of secondary nut 4 is different with the tooth distance of the preceding thread 7 of pair.
The using process that the present invention uses, the installation process of nut is carried out in two steps.The first step connects mother nut 3 and secondary nut 4 earlier, together screws in screw rod 1, and its mounting type is identical with plain nut.And reach torque demand according to lashing force, then mother nut 3 is unclamped half-turn in the other direction.Second step saves secondary nut 4, and secondary nut 4 is transferred pine.Because secondary nut 4 is transferred in the process of pine, can pass to mother nut 3 one rightabout power, i.e. coupling mechanism forces under the effect of external screw thread.For fear of secondary nut 4 disengaging mother nuts 3, therefore the secondary back thread 8 with secondary nut 4 is processed into different tooth distances with secondary preceding thread 7.Because two-part thread difference, two nuts just can not break away from loosening process.
After screwing, side's thread stops.Then from new locking mother nut 3, because the thread interlocking.To cause two nuts to move simultaneously.Because mother nut 3 effective rotating amounts are less than secondary nut 4.Can guarantee that moving mother nut 3 can not break away from,, promptly reach torque demand this moment of stopping the rotation when mother 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, mother nut 3 is a locking state.And secondary nut 4 is locking state, and long-time secondary nut 4 might become flexible around mother nut 3 external screw thread directions and tighten, but this kind state can not make mother nut 3 loosening, 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 secondary nut 4 is the outer nut of mother nut 3, loosening priority is certainly greater than mother nut 3.Therefore when secondary nut 4 when screw rod 1 is rotated counterclockwise, because the effect of mother nut 3 external screw threads just makes mother nut 3 produce the power of locking.Therefore guaranteed the reliability of locking.
The dismounting of nut, first revolute nut 4 is 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. locking nut, it is characterized in that: the inwall front end of secondary nut is processed with secondary preceding thread, the rear inner wall of secondary nut is processed with secondary back thread, the secondary preceding thread of the main external screw thread of mother nut and secondary nut spins together, the secondary back thread of secondary nut is consistent with the thread of the main internal screw thread of mother nut, the secondary back thread of pair nut is different with the tooth distance of secondary preceding thread, forms self-locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202573912U CN201786897U (en) | 2010-07-09 | 2010-07-09 | Locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202573912U CN201786897U (en) | 2010-07-09 | 2010-07-09 | Locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786897U true CN201786897U (en) | 2011-04-06 |
Family
ID=43818861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202573912U Expired - Fee Related CN201786897U (en) | 2010-07-09 | 2010-07-09 | Locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786897U (en) |
-
2010
- 2010-07-09 CN CN2010202573912U patent/CN201786897U/en not_active Expired - Fee Related
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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: 20110406 Termination date: 20110709 |