CN201671944U - Compressed thread pitch variable type self-locking nut - Google Patents
Compressed thread pitch variable type self-locking nut Download PDFInfo
- Publication number
- CN201671944U CN201671944U CN2010201975773U CN201020197577U CN201671944U CN 201671944 U CN201671944 U CN 201671944U CN 2010201975773 U CN2010201975773 U CN 2010201975773U CN 201020197577 U CN201020197577 U CN 201020197577U CN 201671944 U CN201671944 U CN 201671944U
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- nut
- locking
- self
- opening slot
- type self
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Abstract
The utility model discloses a compressed thread pitch variable type self-locking nut, which comprises a nut (1). The nut (1) is provided with an open slot (2) communicated with a threaded hole of the nut (1), and the open slot (2) is axially compresses and deformed; and the distance (H) from the bottom of the open slot (2) to the center line of the threaded hole of the nut (1) is not smaller than 0 and smaller than the radius of the threaded hole of the nut (1). The utility model has the advantages of simple structure, convenient manufacture, higher production efficiency, low manufacture cost, slow attenuation of self-locking moment, good use effect, high self-locking reliability and the like.
Description
Technical field
The utility model relates to a kind of compression pitch deformation type self-locking nut, belongs to the self-locking nut technical field.
Background technique
At present, the self-locking nut of metal types in the prior art mainly all is the self-locking nut of closing in type, and the self-locking moment of the self-locking nut of these closing in types produces by changing (compression) nut portion effective diameter of thread.The preparation process major part of closing in type self-locking nut of the prior art is that the end with nut is processed into thin elastic wall, carry out ellipse (2 compressions), square (4 compressions) or triangle (3 compressions) closing in distortion then, closing in frock, the structure more complicated higher that this closing in mode is required to required precision, cause the frock manufacture difficulty big, use inconvenience, therefore the bottling technique of this self-locking nut of the prior art exists the lower problem of manufacturing efficiency.In addition, closing in type self-locking nut of the prior art is the self-locking moment that closes up and obtain by to the compression of thin-walled, since the spring-back force that thin-walled compression is closed up a little less than, in use exist the locking torque problem faster that decays, be that bolt is screwed into the locking torque of nut for the first time and the locking torque back-outed differs bigger, when bolt through after being screwed into the nut of back-outing several times, its locking torque will be decayed rapidly.Therefore, no matter existing self-locking nut is from the production technology aspect or not ideal from the using effect aspect.
Summary of the invention
The purpose of this utility model is, provide a kind of simple in structure, easy to make, manufacturing efficiency is higher, with low cost, the self-locking moment decay is slow, the higher compression pitch deformation type self-locking nut of self-locking reliability, to overcome the deficiencies in the prior art.
The utility model is to constitute like this: a kind of compression pitch deformation type self-locking nut of the present utility model, comprise nut, and on nut, be provided with the opening slot that communicates with the tapped hole of nut, and opening slot is by the opening slot of axial crushing deformation.
The bottom land of above-mentioned opening slot is the tapped hole radius of 0≤H＜nut to the distance H of the tapped hole center line of nut.
The quantity of above-mentioned opening slot is 1～2.
The groove width B of opening slot is 1 millimeter≤B≤5 millimeter.
Owing to adopted technique scheme, the utility model is produced the opening slot of certain width in the screw thread stage casing of nut part, the width of this opening slot of mode by axial compression reduces, and at this moment, variation has taken place along with the variation of groove width the pitch of opening slot place screw thread.When bolt is screwed into nut, when the no show slotted section, bolt can normally be screwed into to be back-outed; When bolt is screwed onto the opening slot part, because variation has taken place in the pitch of screw thread herein, there is certain frictional force between the screw thread of nut and bolt thread, therefore twist the certain power of fashionable needs at screw thread and just can overcome the friction torque that produces on the screw thread surface of contact, thereby can prevent nut loosening effectively.Because processing mode of the present utility model only for making opening slot and axial compression, changes the pitch of threaded openings slot part, so its receipts press frock making fairly simple, operate more conveniently, can enhance productivity effectively; In addition, by being carried out 15 times, compression pitch deformation type self-locking nut of the present utility model is screwed into the test of back-outing, the data that obtained from test can draw, at every turn being screwed into of it back-outed the locking torque decay slowly, and therefore compression pitch deformation type self-locking nut of the present utility model in use can obtain more stable self-locking moment.So the utility model is compared with prior art, simple in structure, easy to make, manufacturing efficiency advantage of higher that the utility model not only has, fabricating cost is cheap, slow, good, the self-locking reliability advantages of higher of using effect of self-locking moment decay but also have.
Description of drawings
Fig. 1 is a compression pitch deformation type self-locking nut structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment of the present utility model: a kind of compression pitch deformation type self-locking nut of the present utility model, this compression pitch deformation type self-locking nut comprises and is threaded hole nut 1, the size of this nut 1 and screw thread model or screw thread form can be pressed traditional approach according to the needs that use and make, during making, adopting the mode of milling on nut 1, to mill out the opening slot 2 that communicates with tapped hole on the nut 1 simultaneously, the bottom land of opening slot 2 is controlled at the tapped hole radius of 0≤H＜nut 1 to the distance H of the tapped hole center line of nut 1, can on nut 1, produce 1～2 opening slot 2, but producing 1 opening slot 2 at the medium position place of nut 1 in the ordinary course of things gets final product, the groove width B of opening slot 2 can determine according to the pitch size and the needed self-locking moment size of screw thread, needed generally speaking self-locking moment is big more, the groove width B of its opening slot 2 is just big more, but the groove width B of opening slot 2 should be controlled at the scope of 1 millimeter≤B≤5 millimeter (making groove width B ≈ pitch); Adopt compression tool that opening slot 2 is carried out axial compression (shown in the arrow among Fig. 1) then, make opening slot 2 for by the opening slot of axial crushing deformation.
Nut self-locking method of the present utility model is to produce an opening slot 2(who communicates with tapped hole at least as shown in Figure 1 perpendicular to the central axis of nut 1 and along the tapped hole radial direction of nut 1 on nut 1 surface that is threaded the hole), then nut 1 is carried out the extruding (as the direction of arrow indication among Fig. 1) of axial direction, the width of opening slot 2 is compressed to diminish, thereby make the internal thread pitch of opening slot 2 edges of nut 1 produce local deformation, make nut 1 when being connected, can carry out self-locking by the mode that makes nut 1 internal thread pitch produce local deformation with bolt, promptly when bolt is being screwed into internal thread pitch local deformation place in the tapped hole of nut 1, because variation has taken place in the pitch of nut 1 screw thread herein, produce bigger friction torque between the screw thread of nut 1 and bolt thread, can realize the self-locking of nut 1 like this.
Claims (4)
1. a compression pitch deformation type self-locking nut comprises nut (1), it is characterized in that: be provided with the opening slot (2) that communicates with the tapped hole of nut (1) on nut (1), and opening slot (2) is by the opening slot of axial crushing deformation.
2. compression pitch deformation type self-locking nut according to claim 1 is characterized in that: the bottom land of opening slot (2) is the tapped hole radius of 0≤H＜nut (1) to the distance (H) of the tapped hole center line of nut (1).
3. compression pitch deformation type self-locking nut according to claim 1 is characterized in that: the quantity of opening slot (2) is 1～2.
4. compression pitch deformation type self-locking nut according to claim 1 is characterized in that: the groove width B of opening slot (2) is 1 millimeter≤B≤5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201975773U CN201671944U (en) | 2010-05-20 | 2010-05-20 | Compressed thread pitch variable type self-locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201975773U CN201671944U (en) | 2010-05-20 | 2010-05-20 | Compressed thread pitch variable type self-locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671944U true CN201671944U (en) | 2010-12-15 |
Family
ID=43329356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201975773U Expired - Fee Related CN201671944U (en) | 2010-05-20 | 2010-05-20 | Compressed thread pitch variable type self-locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201671944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893031A (en) * | 2010-05-20 | 2010-11-24 | 贵州航天精工制造有限公司 | Self-locking method for nut and compression pitch deformation type self-locking nut |
| CN109654104A (en) * | 2018-12-12 | 2019-04-19 | 中国北方发动机研究所(天津) | A kind of turbine rotor locking nut |
-
2010
- 2010-05-20 CN CN2010201975773U patent/CN201671944U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893031A (en) * | 2010-05-20 | 2010-11-24 | 贵州航天精工制造有限公司 | Self-locking method for nut and compression pitch deformation type self-locking nut |
| CN109654104A (en) * | 2018-12-12 | 2019-04-19 | 中国北方发动机研究所(天津) | A kind of turbine rotor locking nut |
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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: 20101215 Termination date: 20140520 |