CN204646951U - A kind of self-locking fastening kit - Google Patents
A kind of self-locking fastening kit Download PDFInfo
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- CN204646951U CN204646951U CN201520356011.3U CN201520356011U CN204646951U CN 204646951 U CN204646951 U CN 204646951U CN 201520356011 U CN201520356011 U CN 201520356011U CN 204646951 U CN204646951 U CN 204646951U
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- hole
- nut
- locking
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- end surface
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 22
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model gives a kind of self-locking fastening kit, and mainly solve in prior art, fastening piece easily loosens in vibration environment, causes the problem connecting and get loose.It comprises bolt, inner nut and outer nut, and outer nut is provided with the locking element of locking with inner nut lower end surface; Wherein, outer nut is provided with the first hole, the second hole and tapped hole from top to bottom successively, and locking element is arranged in the second hole, is provided with a post in tapped hole, and is provided with helical spring between silk post and locking element; Locking element upper end can be enable to stretch out the first hole for rotation silk post and inner nut lower end surface is adjacent to locking, thus effectively prevents outer nut from loosening, and improves anti-loosing effect; And by reference to the accompanying drawings the optimal way of steel ball and these two kinds of locking elements of stepped cylindrical body has been described in detail.Its structure is simple, effectively can prevent outer nut from loosening, provide reliable fastening connection.
Description
Technical field
The utility model relates to technical field of fastening, specifically a kind of self-locking fastening kit.
Background technique
Class mechanical parts very widely applied by fastening piece, on various machinery, equipment, vehicle, boats and ships, railway, bridge, building etc., can see fastening piece miscellaneous.Existing fastening piece adopts plain bolt to be connected fastening mode with nut mostly, and also namely plain bolt is secondary, and this kind of plain bolt obtains extensive use because of easy accessibility; But in practical application, under the effect of intense vibration load, the plain bolt pair in machinery and building structure is easy to occur loosening, and there is larger potential safety hazard; If maintenance not in time, be easy to cause to connect insecure or bolt, nut comes off, cause serious accident, cause immeasurable loss.
Application number is that the Chinese patent of 200820108336X discloses a kind of two cap chek bolt, and it mainly comprises bolt, inner nut and outer nut; Wherein, inner nut is contrary with the screw pair direction that bolt coordinates with outer nut, and compare plain bolt, it has certain anti-loosing effect; But, still there is larger defect in this kind of mode, inherently, it is similar to the plain bolt of two superpositions, in a particular application, outer nut is a similar plain nut still, after being vibrated, still as plain bolt, easy generation loosens, after outer nut generation loosens, two nut contact end faces there will be separation, will lose anti-loosing effect.
For this reason, how taking more effective measures to prevent screw pair from getting loose, is the problem that those skilled in the art need solution badly.
Model utility content
Easily loosen in vibration environment for fastening piece of the prior art, cause the problem connecting and get loose, the purpose of this utility model is to provide a kind of self-locking fastening kit, its bolt is provided with juxtaposed inner nut and outer nut, outer nut is provided with the locking element of locking with inner nut lower end surface, it can effectively prevent outer nut from loosening, and provides reliable fastening connection.
The technical scheme in the invention for solving the technical problem is:
A kind of self-locking fastening kit, comprise bolt, inner nut and outer nut, it is characterized in that, described outer nut is provided with the locking element of locking with described inner nut lower end surface;
Be provided with the first hole, the second hole and tapped hole from top to bottom successively between described outer nut both ends of the surface, the opening in described first hole is less than the aperture in described second hole; Described locking element is arranged in described second hole, is provided with a post in described tapped hole, is provided with helical spring between described silk post and described locking element, and described silk post lower end surface is provided with the convenient socket rotated;
When rotating described silk post, under described helical spring effect, described locking element stretches out described first hole and described inner nut lower end surface is locked.
Further, described first hole and described second hole are as cylindrical hole, described locking element is steel ball, described inner nut lower end surface is provided with the groove adapted with described steel ball, described groove is even dense distribution on described inner nut lower end surface, and the aperture in described first hole is less than the diameter of described steel ball.
Further, described steel ball is equally distributed multiple along the tapped hole of described outer nut.
Further, described first hole and described second hole are as cylindrical hole, described locking element is be arranged on the stepped cylindrical body in described second hole, described stepped cylindrical body upper end is the first cylindrical body that diameter is less than described first aperture, hole, described first cylindrical body upper-end surface is provided with miniature sawtooth, and described inner nut lower end surface is provided with the friction ring of miniature sawtooth;
Described stepped cylindrical body Zhou Duan is provided with projection, is provided with the chute adapted with described projection, is coordinated by described projection with described chute in described second hole, and described stepped cylindrical body moves up and down at described silk post and described helical spring effect.
Further, described stepped cylindrical body is equally distributed multiple along the tapped hole of described outer nut.
Further, described bolt lower end is provided with the reverse thread portion contrary with its main body screw rotation direction, and described outer nut is provided with the internal thread with described reverse thread portion screw-thread fit.
Further, described socket is the rectangle that stretches into of the applicable screw edge of a knife or plum blossom groove.
Further, described socket is the regular hexagon counterbore that in being applicable to, six sides stretch into.
Further, described socket is the special-shaped counterbore that applicable proprietary profile tool inserts.
The beneficial effects of the utility model are: in the utility model, bolt is provided with inner nut and outer nut, and wherein, described outer nut is provided with the locking element of locking with described inner nut lower end surface, can prevent outer nut from loosening, have good anti-loosing effect.
1, in first in embodiment, locking element is the steel ball that outer nut is arranged, and described inner nut lower end surface is provided with the groove adapted with steel ball, during two nut screwing clamping contacts, the exposed portion of this steel ball is embedded in groove, and is firmly leaned in a groove steel ball exposed portion by silk post; When link is subject to vibrating, because helical spring is in compressive state all the time, between two nuts, form larger pressure, make outer nut be not easy to occur loosening, thus ensure that anti-loosing effect.
And, in this kind of embodiment, because steel ball itself can rotate, even if under steel ball is held out against state, also directly can turn outer nut and inside and outside nut is fitted, and then make steel ball have larger stretch pressure by turning a post.
2, further, as the second embodiment, on the basis of the first embodiment, inner nut is contrary with the screw pair direction that bolt coordinates with outer nut; Like this, the tightening direction of the loosening direction of any one nut another nut exactly, under interior outer nut is in the state of fitting tightly all the time, makes anti-loosing effect better.
3, in the third embodiment, locking element is the stepped cylindrical body that outer nut is arranged, and described inner nut lower end surface is provided with the friction ring of miniature sawtooth, and the exposed portion of this stepped cylindrical body fits tightly with friction ring under helical spring effect; And, stepped cylindrical body is provided with projection, this projection is embedded in the chute in the second hole, stepped cylindrical body can only be moved up and down by outer nut relatively, thus make anti-loosing effect better (due in first and second kind of embodiment, steel ball surface is smooth, if when vibration is very large, still there is the possibility of locking inefficacy).
4, further, as the 4th kind of embodiment, on the basis of the third embodiment, inner nut is contrary with the screw pair direction that bolt coordinates with outer nut; Like this, the tightening direction of the loosening direction of any one nut another nut exactly, under interior outer nut is in the state of fitting tightly all the time, makes anti-loosing effect better.
5, the socket that arranges of silk post lower end is except the breach (flat mouth or plum blossom) being set to the applicable screw edge of a knife and stretching into, or outside the regular hexagon counterbore that in being applicable to, six sides stretch into, can also be set to further is the special-shaped counterbore that applicable proprietary profile tool inserts, the screw-driver that this kind of profiled holes uses in routine and interior six sides cannot rotate, and have anti-theft feature.
Accompanying drawing explanation
Fig. 1 be the first embodiment of the present utility model face direction structure schematic diagram;
Fig. 2 be the second embodiment of the present utility model face direction structure schematic diagram;
Fig. 3 is the end-face structure schematic diagram of inner nut in first and second kind of embodiment of the present utility model;
Fig. 4 is the end-face structure schematic diagram of outer nut in first and second kind of embodiment of the present utility model;
Fig. 5 be in the utility model the third embodiment face direction structure schematic diagram;
Fig. 6 be the 4th kind of embodiment of the present utility model face direction structure schematic diagram;
Fig. 7 is the end-face structure schematic diagram of inner nut in third and fourth kind of embodiment of the present utility model;
Fig. 8 is the end-face structure schematic diagram of outer nut in third and fourth kind of embodiment of the present utility model;
Fig. 9 is the axle TV structure schematic diagram of third and fourth kind of embodiment China and foreign countries of the present utility model nut tightening fixing apparatus;
In figure: 1 bolt, 11 inner nuts, 111 grooves, 111 ' friction ring, 12 outer nuts, 121 tapped holes, 122 posts, 1221 sockets, 123 helical springs, 124 steel balls, 124 ' stepped cylindrical body, 1241 ' is protruding, 1242 ' first cylindrical body, 125 second holes, 1,251 first holes, 1252 chutes, 13 reverse thread portions.
Embodiment
As shown in Figures 1 to 9, a kind of self-locking fastening kit that the utility model provides, comprises bolt 1, inner nut 11 and outer nut 12, its major character is, described outer nut 12 is provided with the locking element of locking with described inner nut 11 lower end surface, can prevent outer nut from loosening, have good anti-loosing effect.
Be provided with the first hole 125, hole 1251, second and tapped hole 121 between described outer nut 12 both ends of the surface from top to bottom successively, the opening in described first hole 1251 is less than the aperture in described second hole 125; Described locking element is arranged in described second hole 125, is provided with a post 122 in described tapped hole 121, is provided with helical spring 123 between described silk post 122 and described locking element, and described silk post 122 lower end surface is provided with the convenient socket 1221 rotated.
Socket 1221 described in this is the breach (flat mouth or plum blossom) that the applicable screw edge of a knife stretches into, or the regular hexagon counterbore that in being applicable to, six sides stretch into, or this socket is set to be the special-shaped counterbore that applicable proprietary profile tool inserts, described different in nature hole can be all kinds of special-shaped counterbores such as trapezoidal, oval, semicircle, the screw-driver that this kind of profiled holes uses in routine and interior six sides cannot rotate, therefore, there is anti-theft feature.
When rotating described silk post 122, under the effect of described helical spring 123, described locking element stretches out described first hole 1251 and locks with described inner nut 11 lower end surface.
This locking element popularly can be interpreted as it can is the slide block moved up and down in the second hole 125, described first hole 1251 can be stretched out in its upper end, when rotating described silk post 122, under the effect of described helical spring 123, locking element described in this stretches out described first hole 1251 and is adjacent to described inner nut 11 lower end surface, and prevents nut loosening by the friction between end face.
In concrete enforcement, the utility model mainly contains following several set-up mode, is described in detail each embodiment below in conjunction with the drawings and specific embodiments.
The first embodiment
As shown in figures 1 and 3, described first hole 1251 and described second hole 125 are as cylindrical hole, described locking element is steel ball 124, described inner nut 11 lower end surface is provided with the groove 111 adapted with described steel ball 124, described groove 111 is even dense distribution on described inner nut 11 lower end surface, and the aperture in described first hole 1251 is less than the diameter of described steel ball 124.
Like this, during two nut screwing clamping contacts, the exposed portion of this steel ball 111 is embedded in groove 111, and firmly leans by silk post 122 in groove 111 by steel ball 124 exposed portion; When link is subject to vibrating, because helical spring 123 is in compressive state all the time, between two nuts, form larger pressure, make outer nut 12 be not easy to occur loosening, thus ensure that anti-loosing effect.
And, in this kind of embodiment, because steel ball 124 itself can rotate, even if under steel ball 124 is held out against state, also directly can turn outer nut 12 and inside and outside nut is fitted, and then make steel ball 124 have larger stretch pressure by turning a post 122.
As shown in Figure 4, described steel ball 124 is equally distributed multiple along the tapped hole of described outer nut 12, and preferred as one, described steel ball 124 has four or six.
The second embodiment
As shown in Figure 2, on the basis of the first embodiment, described bolt 1 lower end is provided with the reverse thread portion 13 contrary with its main body screw rotation direction, described outer nut 12 is provided with the internal thread with described reverse thread portion 13 screw-thread fit, in addition, other structures are all identical with the first embodiment, at this, are not described in detail.
Like this, because inner nut 11 is contrary with the screw pair direction that bolt 1 coordinates with outer nut 12, the tightening direction of the loosening direction of any one nut another nut exactly, under interior outer nut is in the state of fitting tightly all the time, makes anti-loosing effect better.
The third embodiment
As shown in Figure 5, shown in Fig. 7 and Fig. 9, described first hole 1251 and described second hole 125 are as cylindrical hole, described locking element is be arranged on the stepped cylindrical body 124 ' in described second hole 125, described stepped cylindrical body 124 ' upper end is the first cylindrical body 1242 ' that diameter is less than described first aperture, hole 1251, described first cylindrical body 1242 ' upper-end surface is provided with miniature sawtooth, and described inner nut 11 lower end surface is provided with the friction ring 111 ' of miniature sawtooth;
Described stepped cylindrical body 124 ' Zhou Duan is provided with protruding 1241 ', be provided with and the described protruding 1241 ' chute adapted 1252 in described second hole 125, coordinate with described chute 1252 by described protruding 1241 ', described stepped cylindrical body 124 ' moves up and down in the effect of described silk post 122 and described helical spring 123.
Like this, the exposed portion (1242 ') of this stepped cylindrical body 124 ' fits tightly with friction ring 111 ' under helical spring 123 acts on; And, stepped cylindrical body 124 ' is provided with protruding 1241 ', this projection 1241 ' is embedded in the chute 1252 in the second hole 125, stepped cylindrical body 124 ' can only be moved up and down by outer nut 12 relatively, thus make anti-loosing effect better (due in first and second kind of embodiment,, if when vibration is very large, still there is the possibility of locking inefficacy in steel ball 124 smooth surface).
As shown in Figure 7, described stepped cylindrical body 124 ' is equally distributed multiple along the tapped hole of described outer nut 12, and preferred as one, described stepped cylindrical body 124 ' has four or six.
4th kind of embodiment
As shown in Figure 6, on the basis of the third embodiment, described bolt 1 lower end is provided with the reverse thread portion 13 contrary with its main body screw rotation direction, described outer nut 12 is provided with the internal thread with described reverse thread portion 13 screw-thread fit, in addition, other structures are all identical with the third embodiment, at this, are not described in detail.
Like this, because inner nut 11 is contrary with the screw pair direction that bolt 1 coordinates with outer nut 12, the tightening direction of the loosening direction of any one nut another nut exactly, under interior outer nut is in the state of fitting tightly all the time, makes anti-loosing effect better.
Except the technical characteristics described in specification, be the known technology of those skilled in the art.
The above has made detailed description to preferred implementation of the present utility model and embodiment by reference to the accompanying drawings; but the utility model is not limited to the above-described embodiment and examples; for those skilled in the art; without departing from the concept of the premise utility; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (9)
1. a self-locking fastening kit, comprise bolt (1), inner nut (11) and outer nut (12), it is characterized in that, described outer nut (12) is provided with the locking element of locking with described inner nut (11) lower end surface;
Be provided with the first hole (1251), the second hole (125) and tapped hole (121) between described outer nut (12) both ends of the surface from top to bottom successively, the opening of described first hole (1251) is less than the aperture of described second hole (125); Described locking element is arranged in described second hole (125), a post (122) is provided with in described tapped hole (121), be provided with helical spring (123) between described silk post (122) and described locking element, described silk post (122) lower end surface is provided with the convenient socket (1221) rotated;
When rotating described silk post (122), under the effect of described helical spring (123), described locking element stretches out described first hole (1251) and described inner nut (11) lower end surface and locks.
2. a kind of self-locking fastening kit according to claim 1, it is characterized in that, described first hole (1251) and described second hole (125) are as cylindrical hole, described locking element is steel ball (124), described inner nut (11) lower end surface is provided with the groove (111) adapted with described steel ball (124), described groove (111) is even dense distribution on described inner nut (11) lower end surface, and the aperture of described first hole (1251) is less than the diameter of described steel ball (124).
3. a kind of self-locking fastening kit according to claim 2, is characterized in that, described steel ball (124) is equally distributed multiple along the tapped hole of described outer nut (12).
4. a kind of self-locking fastening kit according to claim 1, it is characterized in that, described first hole (1251) and described second hole (125) are as cylindrical hole, described locking element is for being arranged on the stepped cylindrical body (124 ') in described second hole (125), described stepped cylindrical body (124 ') upper end is the first cylindrical body (1242 ') that diameter is less than described first hole (1251) aperture, described first cylindrical body (1242 ') upper-end surface is provided with miniature sawtooth, described inner nut (11) lower end surface is provided with the friction ring (111 ') of miniature sawtooth,
Described stepped cylindrical body (124 ') Zhou Duan is provided with projection (1241 '), the chute (1252) adapted with described projection (1241 ') is provided with in described second hole (125), coordinated with described chute (1252) by described projection (1241 '), described stepped cylindrical body (124 ') moves up and down in the effect of described silk post (122) and described helical spring (123).
5. a kind of self-locking fastening kit according to claim 4, is characterized in that, described stepped cylindrical body (124 ') is equally distributed multiple along the tapped hole of described outer nut (12).
6. a kind of self-locking fastening kit according to any one of claim 3 or 5, it is characterized in that, described bolt (1) lower end is provided with the reverse thread portion (13) contrary with its main body screw rotation direction, and described outer nut (12) is provided with the internal thread with described reverse thread portion (13) screw-thread fit.
7. a kind of self-locking fastening kit according to claim 1, is characterized in that, described socket (1221) is be applicable to the rectangle that stretches into of the screw edge of a knife or plum blossom groove.
8. a kind of self-locking fastening kit according to claim 1, is characterized in that, described socket (1221) is the regular hexagon counterbore that in being applicable to, six sides stretch into.
9. a kind of self-locking fastening kit according to claim 1, is characterized in that, described socket (1221) is the special-shaped counterbore being applicable to the insertion of proprietary profile tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520356011.3U CN204646951U (en) | 2015-05-28 | 2015-05-28 | A kind of self-locking fastening kit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520356011.3U CN204646951U (en) | 2015-05-28 | 2015-05-28 | A kind of self-locking fastening kit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646951U true CN204646951U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520356011.3U Withdrawn - After Issue CN204646951U (en) | 2015-05-28 | 2015-05-28 | A kind of self-locking fastening kit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646951U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863952A (en) * | 2015-05-28 | 2015-08-26 | 国网山东省电力公司经济技术研究院 | Self-locking fastening set |
| CN108035960A (en) * | 2017-12-27 | 2018-05-15 | 广西金邦泰科技有限公司 | A kind of anti-rotation nut |
| CN110332213A (en) * | 2019-07-22 | 2019-10-15 | 新昌县丽晶工业产品设计有限公司 | A kind of multipurpose fastening assembly |
| CN115320730A (en) * | 2022-08-23 | 2022-11-11 | 奇瑞汽车股份有限公司 | Section bar threaded sleeve connection structure |
-
2015
- 2015-05-28 CN CN201520356011.3U patent/CN204646951U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863952A (en) * | 2015-05-28 | 2015-08-26 | 国网山东省电力公司经济技术研究院 | Self-locking fastening set |
| CN104863952B (en) * | 2015-05-28 | 2017-10-24 | 国网山东省电力公司经济技术研究院 | A kind of self-locking fastening kit |
| CN108035960A (en) * | 2017-12-27 | 2018-05-15 | 广西金邦泰科技有限公司 | A kind of anti-rotation nut |
| CN110332213A (en) * | 2019-07-22 | 2019-10-15 | 新昌县丽晶工业产品设计有限公司 | A kind of multipurpose fastening assembly |
| CN110332213B (en) * | 2019-07-22 | 2020-03-27 | 温州思林工业设计有限公司 | Multipurpose fastening assembly |
| CN115320730A (en) * | 2022-08-23 | 2022-11-11 | 奇瑞汽车股份有限公司 | Section bar threaded sleeve connection structure |
| CN115320730B (en) * | 2022-08-23 | 2024-03-26 | 奇瑞汽车股份有限公司 | Profile threaded sleeve connecting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150916 Effective date of abandoning: 20171024 |
|
| AV01 | Patent right actively abandoned |