CN202182100U - Self-locking nut - Google Patents
Self-locking nut Download PDFInfo
- Publication number
- CN202182100U CN202182100U CN2011202574708U CN201120257470U CN202182100U CN 202182100 U CN202182100 U CN 202182100U CN 2011202574708 U CN2011202574708 U CN 2011202574708U CN 201120257470 U CN201120257470 U CN 201120257470U CN 202182100 U CN202182100 U CN 202182100U
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- China
- Prior art keywords
- nut
- self
- thread section
- basal body
- section
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- 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 - Lifetime
Links
- 210000002421 cell wall Anatomy 0.000 claims description 17
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 208000012886 Vertigo Diseases 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Abstract
The utility model discloses a self-locking nut, which comprises a nut base body. A thread section on the inner wall of the nut base body comprises a lower portion guiding thread section and an upper portion anti-loosing thread section, the radial dimension of a thread of the anti-loosing thread section is smaller than that of the guiding thread section, and the radial dimension of the thread of the anti-loosing thread section is decreased from one end close to the guiding thread section to the other end. The portion of the nut base body corresponding to the guiding thread section on the lower portion of the inner wall is a guiding portion, and the portion of the nut base body corresponding to the anti-loosing thread section on the upper portion of the inner wall is a locking portion. A plurality of separating grooves extending from the upper end face of the locking portion downwards are arranged on the locking portion along the circumferential direction, the separating grooves enable the locking portion to be separated into a plurality of compacting petals along the circumferential direction, grooves are evenly distributed on the outer circumferential face of each compacting petal, and the grooves extend along the direction which is perpendicular to the axial direction of the nut base body. The grooves are adopted to improve self recovery performance of the compacting petals towards elastic deformation, so that decay rate of anti-loosing performance of the self-locking nut is reduced, and service life of the self-locking nut is guaranteed.
Description
Technical field
The utility model belongs to the machanical fastener technical field, particularly a kind of self-locking nut.
Background technique
In the Aeronautics and Astronautics motor, the past, normal safety fuse cutout or the compression spring of adopting locked, but the locking device complex design of safety fuse cutout or compression spring is assembled loaded down with trivial details.
A kind of novel self-locking nut is disclosed in notification number is the Chinese utility model patent specification of CN2202823Y; It comprises basal body of nut; Set thread section comprises guiding thread section and checknut section on the inwall of basal body of nut; The screw thread radial dimension of checknut section is less than the screw thread radial dimension of guiding thread section; And the screw thread radial dimension of checknut section is reduced to the other end by the end near the guiding thread section; Part corresponding to the guiding thread section on the basal body of nut is a guide portion, and the part corresponding to the checknut section on the basal body of nut is a tight lock part, on the tight lock part of basal body of nut around circumferentially being provided with the separating grooves that a plurality of end faces by tight lock part extend to guide portion; Separating groove is divided into a plurality of lobes that compress with the lock portion of basal body of nut; The friction tight locking ring that is set with on the outer circumferential face of the tight lock part of basal body of nut is provided with transition shoulder corresponding to the checknut section with guiding thread section crossover position place on the outer circumferential face of basal body of nut, described locking ring is sitting on the step surface of said transition shoulder.When the nut spinning is on bolt; Bolt screws in and gets into the checknut section by the guiding thread section; Because the screw thread radial dimension of checknut section is less, the lobe that compresses that the correspondence of basal body of nut is provided with the tight lock part of checknut section receives the bolt extrusion expansion, and locking ring hinders its outside expansion; Thereby the inner tensions that relies on locking ring makes compressing on the screw thread that lobe is pressed on bolt of tight lock part; Increase screw thread friction pair pressure, produce the anti-frictional force of tightening and becoming flexible simultaneously, realize the self-locking of nut.
But disclosed self-locking nut needs basal body of nut and locking ring to match could to realize the nut self-locking in the above-mentioned model utility; Its component are more, deadweight is big, the assembling trouble; And because need to guarantee the self-locking property of self-locking nut, so whole self-locking nut having relatively high expectations to locking ring by locking ring.
The model utility content
The purpose of the utility model is to provide a kind of self-locking nut, the technical problem more with the component that solve self-locking nut in the existing technology, that deadweight is bigger.
For realizing above-mentioned purpose; The utility model adopts following technological scheme: a kind of self-locking nut; Comprise basal body of nut; Thread section on the basal body of nut inwall comprises the guiding thread section of bottom and the checknut section on top, and the screw thread radial dimension of checknut section is less than the screw thread radial dimension of guiding thread section, and the screw thread radial dimension of checknut section is reduced to the other end by the end near the guiding thread section; Part corresponding to the guiding thread section of inwall bottom on the basal body of nut is a guide portion; Part corresponding to the checknut section of upper inside wall on the basal body of nut is a tight lock part, on the tight lock part around circumferentially offering a plurality of upper-end surfaces by tight lock part to the separating groove that extends below, separating groove with tight lock part along circumferentially being divided into a plurality of lobes that compress; Described each compress on the outer circumferential face of lobe and be equipped with groove, groove is along extending perpendicular to the axial direction of basal body of nut.
Described groove is the arc groove that extends along the circumferencial direction of basal body of nut, and the pairing center of circle coincides and is positioned on the central axis of basal body of nut at the bottom of the curve bath of said each arc groove.
Described arc groove by described curve bath at the bottom of with the last cell wall that is positioned at upper and lower sides at the bottom of the curve bath and down cell wall forms, the last cell wall of arc groove perpendicular to curve bath at the bottom of, following cell wall is axial perpendicular to basal body of nut.
The following cell wall of described arc groove is positioned at the crossover position place of said guide portion and tight lock part.
The upper-end surface that compresses lobe of described tight lock part and the crossover position place of outer circumferential face are provided with chamfering.
Described a plurality of separating groove is meter font and distributes in the upper-end surface of tight lock part.
The beneficial effect of the utility model is: on each compresses the outer circumferential face of lobe, groove is set in the utility model; Groove is along extending perpendicular to the axial direction of basal body of nut, during use, when the corresponding spinning bolt of self-locking nut or outer circumferential face being provided with on the thread spindle of adaptive screw thread; Bolt or thread spindle are earlier corresponding adaptive with the guiding thread section of guide portion; Bolt or thread spindle screw in the checknut section of tight lock part under the guiding function of guiding thread section, because the screw thread radial dimension of checknut section is little, bolt or thread spindle respectively compress the outside distending of lobe with tight lock part screwing in simultaneously; Compress lobe and elastic strain occurs; Because the outer circumferential face that compresses lobe is provided with groove, has so just improved and compress lobe and be directed to elastically-deformable self recoverability, thereby made and produce pressure between the screw thread that compresses lobe and bolt or thread spindle; Produce the anti-frictional force of tightening and becoming flexible simultaneously, realize that the self-locking of nut is loosened.And because adopt groove to improve to compress lobe to be directed to elastically-deformable self recoverability, reduced the rate of decay of the anti-loosening property of self-locking nut, guaranteed self-locking nut working life.Because cancelled locking ring, the self-locking nut component that provided are less, deadweight is lighter, and it is simple in structure, easy to use.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model a structural representation;
The user mode schematic representation that Fig. 2 is to use the self-locking nut shown in Fig. 1 to be locked.
Embodiment
As shown in Figure 1; A kind of self-locking nut; Comprise basal body of nut, the thread section on the basal body of nut inwall comprises the guiding thread section 5 of bottom and the checknut section 3 on top, and the part corresponding to the guiding thread section 5 of inwall bottom on the basal body of nut is a guide portion 1; Part corresponding to the checknut section 3 of upper inside wall on the basal body of nut is a tight lock part 2; The screw thread radial dimension of checknut section 3 is less than the screw thread radial dimension of guiding thread section 5, and the screw thread radial dimension of checknut section 3 so just makes the tight lock part of basal body of nut be the contraction structure that extends from bottom to top by reducing to the other end near an end that guides thread section.On tight lock part 2 around circumferentially offering a plurality of upper-end surfaces by tight lock part to the separating groove that extends below 6; Separating groove 6 extends downward the crossover position place of tight lock part to guide portion in the present embodiment; Described a plurality of separating groove 6 is formed the rice font in the upper end surface of tight lock part; Separating groove 6 circumferentially is divided into a plurality of lobes 7 that compress with the tight lock part edge; Each compresses on the outer circumferential face of lobe 7 and is equipped with groove; The present embodiment further groove is the arc groove 4 that along the circumferential direction extends, arc groove 4 by at the bottom of the curve bath with the last cell wall that is positioned at upper and lower sides at the bottom of the curve bath and descend cell wall to form, the following cell wall of arc groove 4 is positioned at the crossover position place of said guide portion and tight lock part; The last cell wall of arc groove 4 perpendicular to curve bath at the bottom of, down cell wall is perpendicular to the central axis of basal body of nut, the pairing center of circle coincides and is positioned on the central axis of basal body of nut at the bottom of the curve bath of each arc groove 4.
The upper-end surface that compresses lobe 7 of described tight lock part 2 and the crossover position place of outer circumferential face are provided with chamfering.
The arc groove 4 of the groove that is provided with on the outer circumferential face that compresses lobe in the foregoing description for along the circumferential direction extending; In fact; The structure that also can adopt other embodiments as: groove is arranged to straight trough; Certainly straight trough is along extending perpendicular to the axial direction of basal body of nut, and this moment, the bottom land of groove was the plane.
The last cell wall of the arc groove in the foregoing description perpendicular to curve bath at the bottom of, down cell wall is perpendicular to the central axis of basal body of nut, so just makes that the cross section along the axis of basal body of nut of arc groove is roughly rectangular; The structure that in fact also can adopt other embodiments also can be for curved along the cross section of the axis of basal body of nut like: arc groove, perhaps with arc groove along the Cross section Design triangularity of the axis of basal body of nut or trapezoidal.
As shown in Figure 2, during use, with bearing 13 and gear 12 to be fixed after assembling on the main shaft 11; On main shaft 11, the screwed thread spindle on the main shaft 11 is screwed in by the guiding thread section of self-locking nut, screws out from the checknut section with self-locking nut 10 spinnings; Because carrying out size, the screw thread of the checknut section of basal body of nut reduces gradually; When bolt passes self-locking nut, the tight lock part on the self-locking nut compress the lobe expansion that is squeezed because compress the elastic recovery effect of lobe self; Increase the extrusion friction power of nut and bolt; Guarantee the self-locking of self-locking nut, bearing 13 is pressed abd fixed on the main shaft 11, thereby gear 12 is fixed on the main shaft that matches.
Claims (6)
1. self-locking nut; Comprise basal body of nut; Thread section on the basal body of nut inwall comprises the guiding thread section of bottom and the checknut section on top, and the screw thread radial dimension of checknut section is less than the screw thread radial dimension of guiding thread section, and the screw thread radial dimension of checknut section is reduced to the other end by the end near the guiding thread section; Part corresponding to the guiding thread section of inwall bottom on the basal body of nut is a guide portion; Part corresponding to the checknut section of upper inside wall on the basal body of nut is a tight lock part, on the tight lock part around circumferentially offering a plurality of upper-end surfaces by tight lock part to the separating groove that extends below, separating groove with tight lock part along circumferentially being divided into a plurality of lobes that compress; It is characterized in that: described each compress on the outer circumferential face of lobe and be equipped with groove, groove is along extending perpendicular to the axial direction of basal body of nut.
2. self-locking nut according to claim 1; It is characterized in that: the arc groove of described groove for extending along the circumferencial direction of basal body of nut, the pairing center of circle coincides and is positioned on the central axis of basal body of nut at the bottom of the curve bath of said each arc groove.
3. self-locking nut according to claim 2; It is characterized in that: described arc groove by described curve bath at the bottom of with the last cell wall that is positioned at upper and lower sides at the bottom of the curve bath and down cell wall forms, the last cell wall of arc groove perpendicular to curve bath at the bottom of, following cell wall is axial perpendicular to basal body of nut.
4. self-locking nut according to claim 3 is characterized in that: the following cell wall of described arc groove is positioned at the crossover position place of said guide portion and tight lock part.
5. self-locking nut according to claim 4 is characterized in that: the upper-end surface that compresses lobe of described tight lock part and the crossover position place of outer circumferential face are provided with chamfering.
6. according to any described self-locking nut in the claim 1 to 5, it is characterized in that: described a plurality of separating grooves are meter font and distribute in the upper-end surface of tight lock part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202574708U CN202182100U (en) | 2011-07-20 | 2011-07-20 | Self-locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202574708U CN202182100U (en) | 2011-07-20 | 2011-07-20 | Self-locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182100U true CN202182100U (en) | 2012-04-04 |
Family
ID=46175138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202574708U Expired - Lifetime CN202182100U (en) | 2011-07-20 | 2011-07-20 | Self-locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182100U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439906A (en) * | 2019-08-27 | 2019-11-12 | 航天精工股份有限公司 | A kind of effectively anti-loose cassette self-locking nut |
| CN111503124A (en) * | 2020-04-30 | 2020-08-07 | 海盐联众紧固件有限公司 | Locking nut with disc locking function |
| CN111963559A (en) * | 2020-08-28 | 2020-11-20 | 东风商用车有限公司 | Big nut of spindle nose with from locking function |
| CN112392840A (en) * | 2019-08-16 | 2021-02-23 | 舍弗勒技术股份两合公司 | Locking nut |
| CN112594286A (en) * | 2020-11-30 | 2021-04-02 | 河南航天精工制造有限公司 | Self-locking threaded sleeve |
| CN113803346A (en) * | 2021-09-29 | 2021-12-17 | 航天精工股份有限公司 | Detachable anti-disassembly nut assembly |
| WO2024120017A1 (en) * | 2022-12-09 | 2024-06-13 | 浙江亚微精密机床有限公司 | Multi-lobe nut having floating nut lobes |
-
2011
- 2011-07-20 CN CN2011202574708U patent/CN202182100U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392840A (en) * | 2019-08-16 | 2021-02-23 | 舍弗勒技术股份两合公司 | Locking nut |
| CN112392840B (en) * | 2019-08-16 | 2024-10-01 | 舍弗勒技术股份两合公司 | Lock nut |
| CN110439906A (en) * | 2019-08-27 | 2019-11-12 | 航天精工股份有限公司 | A kind of effectively anti-loose cassette self-locking nut |
| CN110439906B (en) * | 2019-08-27 | 2021-03-26 | 航天精工股份有限公司 | Effective anti-loosening clamping type self-locking nut |
| CN111503124A (en) * | 2020-04-30 | 2020-08-07 | 海盐联众紧固件有限公司 | Locking nut with disc locking function |
| CN111963559A (en) * | 2020-08-28 | 2020-11-20 | 东风商用车有限公司 | Big nut of spindle nose with from locking function |
| CN112594286A (en) * | 2020-11-30 | 2021-04-02 | 河南航天精工制造有限公司 | Self-locking threaded sleeve |
| CN113803346A (en) * | 2021-09-29 | 2021-12-17 | 航天精工股份有限公司 | Detachable anti-disassembly nut assembly |
| WO2023050604A1 (en) * | 2021-09-29 | 2023-04-06 | 航天精工股份有限公司 | Detachable anti-disassembly nut assembly |
| WO2024120017A1 (en) * | 2022-12-09 | 2024-06-13 | 浙江亚微精密机床有限公司 | Multi-lobe nut having floating nut lobes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |
|
| CX01 | Expiry of patent term |