CN104196866A - Lock nut - Google Patents
Lock nut Download PDFInfo
- Publication number
- CN104196866A CN104196866A CN201410398791.8A CN201410398791A CN104196866A CN 104196866 A CN104196866 A CN 104196866A CN 201410398791 A CN201410398791 A CN 201410398791A CN 104196866 A CN104196866 A CN 104196866A
- Authority
- CN
- China
- Prior art keywords
- locking
- nut
- conical surface
- inner hole
- nut body
- 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.)
- Pending
Links
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention relates to a lock nut which comprises a nut body and an inner hole thread. A conical surface which is low in the middle and high in the periphery is arranged on the lower end face of the nut body and surrounds an inner hole. The position, close to the conical surface, in the inner hole thread is provided with an annular locking groove. The side face of the upper end of the locking groove is an umbrella-type pyramidal surface which is high in the middle and low in the periphery. The conical included angle between the conical surface and the horizontal plane ranges from 13.5 degrees to 14.5 degrees. The pyramidal included angle between the umbrella-type pyramidal surface and the horizontal plane ranges from 10.5 degrees to 11.5 degrees. The diameter of the locking groove is larger than the diameter of the inner hole thread, and the average width of the locking groove is 1.1-1.3 times of the thread pitch of the inner hole thread. According to the lock nut, since the pyramidal surface and the locking groove of the bottom face are designed reasonably, a thread on a stud is clamped and locked through deformation of the locking groove in the screwing process, and additional locking steps are not needed; the lock nut is easy to use, large in locking force, good in universality and suitable for nuts with various models and specifications.
Description
Technical field
The present invention relates to hardware fastening field, particularly relate to a kind of locking nut.
Background technique
General nut is standard piece mostly in the market, itself does not generally prevent loosening function, therefore in use conventionally need the elastic washer etc. of configuration in addition and nut adaptation to be used in conjunction with to reach locking object, not only operating process more complicated is loaded down with trivial details, and anti-loosing effect is also undesirable, also need to expend the supporting fastening pieces such as a large amount of elastic washers, plain washer, cost of production is higher simultaneously.
Even if there is now the nut of special anti-loosening locking effect on market, its structure is also relatively complicated, process very inconvenient, often can not be by same structure applications to the nut of all specifications and models, versatility is not strong, and in actual application, in the fastening installation of outdoor highway, railway and electric power facility, existing locking nut tends under the corrosion condition that exposes to wind and rain for a long time occur that nut returns the problem of tooth.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of locking nut, by the conical surface and the locking slot of appropriate design bottom surface, distortion by locking slot when tightening clamps locking by the screw thread on double-screw bolt, do not need extra locking step, use simple, coupling mechanism force is large, and versatility is good, is applicable to the nut of various model specifications.
The technical solution adopted for the present invention to solve the technical problems is: a kind of locking nut is provided, comprise nut body and inner hole thread, the lower end surface of described nut body around arrangement of bores low high conical surface around in the middle of having, position near conical surface in described inner hole thread has annular locking slot, the upper side of this locking slot is the middle high low umbrella shape conical surface around, described conical surface and the circular cone angle between horizontal plane are 13.5 °～14.5 °, the described umbrella shape conical surface and the cone of the umbrella between horizontal plane angle are 10.5 °～11.5 °, the diameter of described locking slot is greater than the diameter of inner hole thread, and 1.1～1.3 times of the pitch that its mean breadth is inner hole thread.
The design of conical surface makes the bottom surface of the straight nut body in script bottom surface form a centre outstanding end face downwards, in the process of tightening on double-screw bolt at nut body, between the locking plane of Hui Yuqi lower end, its bottom surface, produce impacting force, the upwards distortion of projection that impacting force forms conical surface, until bottom surface is driven plain.
The umbrella shape conical surface on locking slot has enough compression surpluses on width direction to locking slot, when being driven plain, the bottom surface of nut body make locking slot compressed, width diminishes, the screw thread being embedded into after width diminishes in locking slot will firmly be locked, between nut body and double-screw bolt, just do not have relative movement like this, the locking that has realized nut is locking.
Circular cone angle between conical surface and horizontal plane can not too greatly can not be too little, the middle part, bottom surface of the too large nut body of circular cone angle is too much outstanding downwards, when tightening, be difficult to the bottom surface of nut body to flatten, the compress variation of the too little locking slot of circular cone angle is inadequate, coupling mechanism force between the screw thread of itself and double-screw bolt also cannot reach the locking requirement of nut check, it is the angular range through test of many times checking that circular cone angle is 13.5 °～14.5 °, equally, the corresponding umbrella shape conical surface and the cone of the umbrella between horizontal plane angle are 10.5 °～11.5 °, the size of umbrella cone angle is to change along with the variation of circular cone angle, umbrella cone angle and the circular cone angle conical surface angle within the scope of this can make the bottom surface of nut body easily be flattened, can make again locking slot produce enough decrements clamps the screw thread of double-screw bolt, and coupling mechanism force can reach requirement.
The diameter of locking slot is greater than the diameter of inner hole thread and pitch that mean breadth is inner hole thread 1.1～1.3 times in order that screw flight can be embedded in locking slot easily, and leaves enough large compression volumes of locking slot for.
As patent of the present invention a kind of preferably, between described locking slot and the lower end surface of nut body at a distance of 1-2 pitch, distance between locking slot and the lower end surface of nut body can not too closely can not be too far away, too closely make the bottom surface interior thickness of nut body inadequate, cause insufficient strength, easily occur the situation of cracking in the time of distortion, the screwing force that too far makes the distortion of nut body bottom surface need is excessive, be difficult to flatten, affect the compressive strain of locking slot.
Another kind as patent of the present invention is preferred, and described nut body is tetragonal nut or hexagon nut or octagon nut, has embodied the shape diversity of nut body, and locking mechanism can be applied in various nuts, and versatility is good.
As preferably, described conical surface and the circular cone angle between horizontal plane are preferably 14.19 °, 14.19 ° is the optimal values of the circular cone angle verifying out through test of many times, it is minimum that this angle makes nut body bottom surface flatten required coupling mechanism force, and between the compression of locking slot and double-screw bolt screw thread, coupling mechanism force can just reach the requirement of nut check power.
As preferably, the described umbrella shape conical surface and the cone of the umbrella between horizontal plane angle are preferably 11.20 °, and in like manner, it is to be preferably 14.19 ° of corresponding preferred value with circular cone angle that umbrella cone angle is 11.20 °.
beneficial effect
The present invention relates to a kind of locking nut, by the conical surface and the locking slot of appropriate design bottom surface, distortion by locking slot when tightening clamps locking by the screw thread on double-screw bolt, do not need extra locking step, use simply, coupling mechanism force is large, versatility is good, be applicable to the nut of various model specifications, according to the coupling mechanism force of different field application, require difference, the numerical value that can change circular cone angle and umbrella cone angle is adjusted.
Accompanying drawing explanation
Fig. 1 partly cuts open structural drawing before nut of the present invention is used;
Fig. 2 partly cuts open structural drawing after nut check of the present invention;
Fig. 3 is the use schematic diagram before locking of the present invention;
Fig. 4 is the use schematic diagram after locking of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As Figure 1-4, embodiments of the present invention relate to a kind of locking nut, comprise nut body 1 and inner hole thread 2, the lower end surface of described nut body 1 around arrangement of bores low high conical surface 4 around in the middle of having, position near conical surface 4 in described inner hole thread 2 has annular locking slot 3, the upper side of this locking slot 3 is the middle high low umbrella shape conical surface 5 around, described conical surface 4 and the circular cone included angle B between horizontal plane are 13.5 °～14.5 °, the described umbrella shape conical surface 5 and the cone of the umbrella between horizontal plane included angle A are 10.5 °～11.5 °, the diameter of described locking slot 3 is greater than the diameter of inner hole thread 2, and its mean breadth is 1.1～1.3 times of pitch of inner hole thread 2.
Between described locking slot 3 and the lower end surface of nut body 1 at a distance of 1-2 pitch.
Embodiment 1
As shown in Figure 3-4, this locking nut is to be applied in railroad rail the upper use of locking is installed, between its locking slot 3 and the lower end surface of nut body 1 at a distance of 2 pitch, circular cone included angle B is 14.19 °, umbrella cone included angle A is 11.20 °, the mean breadth of locking slot 3 is 2.3mm, when using, corresponding double-screw bolt is first arranged on railroad rail, then nut body 1 is enclosed within on double-screw bolt, twist from top to bottom, in the process of tightening on double-screw bolt at nut body 1, between the locking plane of Hui Yuqi lower end, its bottom surface, produce impacting force, the upwards distortion of projection that impacting force forms conical surface 4, until bottom surface is driven plain.
The umbrella shape conical surface 5 on locking slot 3 has enough compression surpluses to locking slot 3 on width direction, when being driven plain, the bottom surface of nut body 1 make locking slot 3 compressed, width diminishes, the screw thread being embedded into after width diminishes in locking slot 3 will firmly be locked, between nut body 1 and double-screw bolt, just do not have relative movement like this, the locking that has realized nut is locking.
Embodiment 2
This locking nut is upper use of installation locking that is applied in highway roadside street lamp, between its locking slot 3 and the lower end surface of nut body 1 at a distance of 2 pitch, circular cone included angle B is 13.5 °, umbrella cone included angle A is 10.5 °, the mean breadth of locking slot 3 is 1.5mm, when using, some corresponding double-screw bolts are first arranged on street lamp base fixed plate, then nut body 1 is enclosed within on double-screw bolt, twist from top to bottom, in the process of tightening on double-screw bolt at nut body 1, between the locking plane of Hui Yuqi lower end, its bottom surface, produce impacting force, the upwards distortion of projection that impacting force forms conical surface 4, until bottom surface is driven plain.
The umbrella shape conical surface 5 on locking slot 3 has enough compression surpluses to locking slot 3 on width direction, when being driven plain, the bottom surface of nut body 1 make locking slot 3 compressed, width diminishes, the screw thread being embedded into after width diminishes in locking slot 3 will firmly be locked, between nut body 1 and double-screw bolt, just do not have relative movement like this, the locking that has realized nut is locking.
Embodiment 3
This locking nut is upper use of installation locking that is applied in power tower, because power tower is very important electric power facility, and volume is larger, the resistance of wind is also very large, its installation is stablized shape and is required higher, between its locking slot 3 and the lower end surface of nut body 1 at a distance of 2 pitch, circular cone included angle B is 14.5 °, umbrella cone included angle A is 11.5 °, the mean breadth of locking slot 3 is 3.2mm, when using, some corresponding double-screw bolts are first arranged on a plurality of supporting base fixed plates in power tower lower end, then nut body 1 is enclosed within on double-screw bolt, twist from top to bottom, in the process of tightening on double-screw bolt at nut body 1, between the locking plane of Hui Yuqi lower end, its bottom surface, produce impacting force, the upwards distortion of projection that impacting force forms conical surface 4, until bottom surface is driven plain.
The umbrella shape conical surface 5 on locking slot 3 has enough compression surpluses to locking slot 3 on width direction, when being driven plain, the bottom surface of nut body 1 make locking slot 3 compressed, width diminishes, the screw thread being embedded into after width diminishes in locking slot 3 will firmly be locked, between nut body 1 and double-screw bolt, just do not have relative movement like this, the locking that has realized nut is locking.
Claims (5)
1. a locking nut, comprise nut body (1) and inner hole thread (2), it is characterized in that, the lower end surface of described nut body (1) around arrangement of bores low high conical surface (4) around in the middle of having, position near conical surface (4) in described inner hole thread (2) has annular locking slot (3), the upper side of this locking slot (3) is the middle high low umbrella shape conical surface (5) around, circular cone angle (B) between described conical surface (4) and horizontal plane is 13.5 °～14.5 °, the described umbrella shape conical surface (5) and the cone angle of the umbrella between horizontal plane (A) are 10.5 °～11.5 °, the diameter of described locking slot (3) is greater than the diameter of inner hole thread (2), and its mean breadth is 1.1～1.3 times of pitch of inner hole thread (2).
2. locking nut according to claim 1, is characterized in that: between described locking slot (3) and the lower end surface of nut body (1) at a distance of 1-2 pitch.
3. locking nut according to claim 2, is characterized in that: described nut body (1) is tetragonal nut or hexagon nut or octagon nut.
4. locking nut according to claim 1, is characterized in that: the circular cone angle (B) between described conical surface (4) and horizontal plane is preferably 14.19 °.
5. locking nut according to claim 4, is characterized in that: the described umbrella shape conical surface (5) and the cone angle of the umbrella between horizontal plane (A) are preferably 11.20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398791.8A CN104196866A (en) | 2014-08-13 | 2014-08-13 | Lock nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398791.8A CN104196866A (en) | 2014-08-13 | 2014-08-13 | Lock nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104196866A true CN104196866A (en) | 2014-12-10 |
Family
ID=52082208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410398791.8A Pending CN104196866A (en) | 2014-08-13 | 2014-08-13 | Lock nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104196866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140816A (en) * | 2017-07-13 | 2017-09-08 | 嘉兴沃尔德金刚石工具有限公司 | A kind of detachable chuck block |
| CN109296613A (en) * | 2018-11-27 | 2019-02-01 | 嘉兴锐固五金制品有限公司 | A kind of elastic locking rivet nut |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191306070A (en) * | 1912-03-12 | 1913-09-11 | Otto Luyties | Improvements in Self-locking Nuts. |
| GB213188A (en) * | 1923-08-30 | 1924-03-27 | William Youlten | An improved lock nut |
| US1838605A (en) * | 1924-11-19 | 1931-12-29 | Evertite Locknuts Ltd | Lock nut |
| US2258181A (en) * | 1941-01-23 | 1941-10-07 | Henry De Armond | Nut lock |
| FR2560306A1 (en) * | 1984-02-29 | 1985-08-30 | Quenderff Jean Philippe | Multifunctional safety nut |
| CN101336348A (en) * | 2005-12-22 | 2008-12-31 | 哈特马特·弗莱格 | Nut and method and tool for manufacturing the same |
| CN204099386U (en) * | 2014-08-13 | 2015-01-14 | 宁波市北仑地勤工贸有限公司 | A kind of locking nut |
-
2014
- 2014-08-13 CN CN201410398791.8A patent/CN104196866A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191306070A (en) * | 1912-03-12 | 1913-09-11 | Otto Luyties | Improvements in Self-locking Nuts. |
| GB213188A (en) * | 1923-08-30 | 1924-03-27 | William Youlten | An improved lock nut |
| US1838605A (en) * | 1924-11-19 | 1931-12-29 | Evertite Locknuts Ltd | Lock nut |
| US2258181A (en) * | 1941-01-23 | 1941-10-07 | Henry De Armond | Nut lock |
| FR2560306A1 (en) * | 1984-02-29 | 1985-08-30 | Quenderff Jean Philippe | Multifunctional safety nut |
| CN101336348A (en) * | 2005-12-22 | 2008-12-31 | 哈特马特·弗莱格 | Nut and method and tool for manufacturing the same |
| CN204099386U (en) * | 2014-08-13 | 2015-01-14 | 宁波市北仑地勤工贸有限公司 | A kind of locking nut |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140816A (en) * | 2017-07-13 | 2017-09-08 | 嘉兴沃尔德金刚石工具有限公司 | A kind of detachable chuck block |
| CN109296613A (en) * | 2018-11-27 | 2019-02-01 | 嘉兴锐固五金制品有限公司 | A kind of elastic locking rivet nut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202735074U (en) | Durability test device for outer handle of auto door | |
| CN201616637U (en) | Installing structure of platy base on angle steel | |
| CN104196866A (en) | Lock nut | |
| CN101524834A (en) | Concentricity jig of flange mounting hole | |
| CN204099386U (en) | A kind of locking nut | |
| CN204566021U (en) | Angle and height regulating mechanism | |
| CN204042199U (en) | A kind of yoke configurations for fixing tube | |
| CN203548528U (en) | Novel anti-theft bolt | |
| CN201407269Y (en) | Locking gasket | |
| CN204061436U (en) | A kind of linkage structure of photovoltaic module | |
| CN101608657B (en) | Self-locking nut | |
| CN202756391U (en) | Lock bolt | |
| CN203051378U (en) | Anti-loosening preloaded bolt | |
| CN203548502U (en) | Anti-loosening stopping bolt | |
| CN206758632U (en) | satellite antenna fixed structure | |
| CN205725583U (en) | Photovoltaic panel G type crank compresses and buckles | |
| CN104675831A (en) | Anti-loosening bolt | |
| CN202914477U (en) | Expansion bolt | |
| CN204271590U (en) | A kind of Novel shockproof hammer | |
| CN204284164U (en) | Bolt anticreep locking mechanism | |
| CN209539777U (en) | A kind of wind-power electricity generation nut | |
| CN209072423U (en) | A kind of high intensity terminal box | |
| CN202914476U (en) | Expansion bolt | |
| CN209925891U (en) | Fixing structure for tower crane | |
| CN201182168Y (en) | A mechanism for adjusting the inclination angle of continuous slitting tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141210 |