CN106958580B - Anti-loose nut - Google Patents
Anti-loose nut Download PDFInfo
- Publication number
- CN106958580B CN106958580B CN201710377424.3A CN201710377424A CN106958580B CN 106958580 B CN106958580 B CN 106958580B CN 201710377424 A CN201710377424 A CN 201710377424A CN 106958580 B CN106958580 B CN 106958580B
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- China
- Prior art keywords
- nut
- driving
- cavity
- installation
- tightening
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- 238000009434 installation Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/126—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/028—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of an auxiliary bolt or threaded element whose action provokes the deformation of the main bolt or nut and thereby its blocking
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a locknut which comprises a nut mounting sleeve, a driving nut and a locking nut, wherein the driving nut is mounted in the nut mounting sleeve, a driving part is arranged above the driving nut, a tightening part is arranged below the locking nut, a plurality of slots are axially formed in the side wall of the tightening part, the driving part drives the tightening part to radially contract, a plurality of clamping strips are arranged above the tightening part, an annular limiting groove is formed in the inner wall of the nut mounting sleeve, and the driving part drives the end part of each clamping strip to radially expand and be embedded into the annular limiting groove. Through the radial shrink of the portion that contracts of tightening of drive nut control lock nut, can strengthen the bolt radial connection pretightning force, reach locking purpose, drive bolt drive clamping strip inlays the dress in the inside of nut installation cover simultaneously, locks lock nut and nut installation cover, guarantees the stability of connecting, further improves locking effect.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to a locknut.
Background
Fasteners are a generic term for a class of mechanical parts used to fasten two or more parts (or components) together as a unit. The nut is one of the most widely used fasteners, and is a part for tightly connecting mechanical equipment, and is connected with a nut and a bolt of the same specification through internal threads for use, for example, the bolt is screwed out of the nut, and the two parts can be separated, so that the connection belongs to detachable connection and can be widely used on plates. When mechanical equipment runs, mechanical vibration is avoided, the nut is shaken due to long-term mechanical vibration, thread abrasion is caused, the fastening effect is poor, the working performance and the stability of the mechanical equipment are influenced, particularly the machining precision of some precision equipment is influenced, the phenomenon that the bolt is separated from a threaded hole of the nut can occur, and mechanical failure is caused, so that the locknut is provided.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a locknut which can enhance the radial connection pretightening force of a bolt by controlling the radial contraction of a contraction part of the locknut through a driving nut so as to achieve the purpose of locking.
In order to achieve the purpose, the invention provides a locknut which comprises a nut mounting sleeve, a driving nut and a locking nut, wherein the driving nut is mounted in the nut mounting sleeve, a driving part is arranged above the driving nut, a tightening part is arranged below the locking nut, a plurality of slots are axially formed in the side wall of the tightening part, the driving part drives the tightening part to radially contract, a plurality of clamping strips are arranged above the tightening part, an annular limiting groove is formed in the inner wall of the nut mounting sleeve, and the end part of each clamping strip is driven by the driving part to radially expand and be embedded into the annular limiting groove.
Preferably, the nut mounting sleeve is provided with a first mounting body, the outer contour of the section of the first mounting body is in a regular hexagon shape, a first mounting cavity is formed in the first mounting body, the side wall of the first mounting cavity is provided with an annular limiting groove, a driving cavity is arranged below the first mounting cavity, the section of the driving cavity is in a regular hexagon shape, a limiting convex edge is arranged below the first mounting body and matched with the lower end face of the driving nut, a second mounting cavity is arranged in the limiting convex edge, and the axis of the second mounting cavity coincides with the axis of the first mounting cavity.
As preferred, drive nut still includes connector, hexagonal driving body, removable pin and first screw thread chamber, first screw thread chamber runs through drive nut's center, the top of connector is equipped with the drive division, the below of connector is equipped with the hexagonal driving body, the hexagonal driving body cooperatees with nut installation cover inner chamber, the blind hole has been seted up to the lateral wall of hexagonal driving body, the removable pin passes through spring mounting in the blind hole, the through-hole has been seted up to the lateral wall of nut installation cover, the removable pin cooperatees with the through-hole.
Preferably, the driving part is an annular convex body, a first driving surface is arranged on the inner wall of the driving part, the first driving surface is a conical surface and is matched with the tightening part, a second driving surface is arranged on the upper end face of the driving part, the second driving surface is an arc-shaped surface, and the second driving surface is matched with the clamping strip.
Preferably, the lock nut further comprises a second mounting body and a second threaded cavity, the outer profile of the cross section of the second mounting body is in a regular hexagon shape, the second threaded cavity penetrates through the center of the lock nut, a tightening portion is arranged below the second mounting body, and the tightening portion is a conical body.
Preferably, the number of the clamping strips is at least two, the clamping strips are uniformly distributed in a circumferential mode, and the clamping strips are L-shaped elastic clamping strips.
The invention has the beneficial effects that: according to the invention, through the matching of the nut mounting sleeve, the driving nut, the locking nut and the like, the driving nut controls the contraction part of the locking nut to radially contract, so that the radial connection pretightening force of the bolt can be enhanced, and the purpose of preventing looseness is achieved.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional view of a locknut of the present invention;
FIG. 2 is a schematic structural view of a lock nut of the locknut of the present invention;
FIG. 3 is a schematic structural view of a drive nut of the locknut of the present invention;
fig. 4 is a schematic structural view of a nut mounting sleeve of the locknut of the present invention;
FIG. 5 is a schematic cross-sectional view of a lock nut of the locknut of the present invention;
fig. 6 is a schematic cross-sectional view of a nut mounting sleeve of a locknut of the present invention.
Detailed Description
Referring to fig. 1 to 6, the locknut of the present invention includes a nut mounting sleeve 1, a driving nut 2 and a locking nut 3, wherein the driving nut 2 is mounted in the nut mounting sleeve 1, a driving portion 23 is disposed above the driving nut 2, a tightening portion 32 is disposed below the locking nut 3, a plurality of slots 321 are axially disposed on a side wall of the tightening portion 32, the driving portion 23 drives the tightening portion 32 to radially contract, a plurality of clamping bars 33 are disposed above the tightening portion 32, an annular limiting groove 121 is disposed on an inner wall of the nut mounting sleeve 1, and the driving portion 23 drives an end portion of the clamping bar 33 to radially expand and be embedded in the annular limiting groove 121. The nut mounting sleeve is characterized in that a first mounting body 11 is arranged on the nut mounting sleeve 1, the shape of the outer contour of the cross section of the first mounting body 11 is a regular hexagon, a first mounting cavity 12 is formed in the first mounting body 11, an annular limiting groove 121 is formed in the side wall of the first mounting cavity 12, a driving cavity 13 is arranged below the first mounting cavity 12, the cross section of the driving cavity 13 is a regular hexagon, a limiting convex edge 111 is arranged below the first mounting body 11, the limiting convex edge 111 is matched with the lower end face of the driving nut 2, a second mounting cavity 112 is arranged in the limiting convex edge 111, and the axis of the second mounting cavity 112 coincides with the axis of the first mounting cavity 12. Drive nut 2 still includes connector 21, hexagonal driving body 22, removable pin 24 and first screw cavity 25, first screw cavity 25 runs through drive nut 2's center, the top of connector 21 is equipped with drive division 23, the below of connector 21 is equipped with hexagonal driving body 22, hexagonal driving body 22 cooperatees with 1 inner chamber of nut installation cover, blind hole 221 has been seted up to the lateral wall of hexagonal driving body 22, removable pin 24 passes through spring mounting in blind hole 221, through-hole 14 has been seted up to the lateral wall of nut installation cover 1, removable pin 24 cooperatees with through-hole 14. The driving portion 23 is an annular convex body, a first driving surface 231 is arranged on the inner wall of the driving portion 23, the first driving surface 231 is a conical surface, the first driving surface 231 is matched with the tightening portion 32, a second driving surface 232 is arranged on the upper end face of the driving portion 23, the second driving surface 232 is an arc-shaped surface, and the second driving surface 232 is matched with the clamping strip 33. The lock nut 3 further comprises a second mounting body 31 and a second threaded cavity 34, the shape of the outer profile of the cross section of the second mounting body 31 is a regular hexagon, the second threaded cavity 34 penetrates through the center of the lock nut 3, a tightening part 32 is arranged below the second mounting body 31, and the tightening part 32 is a conical body. The figure of chucking strip 33 is two at least, chucking strip 33 is even circumference distribution, chucking strip 33 is L font elasticity card strip.
The working process of the invention is as follows:
the invention relates to a locknut, which is characterized in that in the mounting process, a driving nut 2 is firstly mounted in a nut mounting sleeve 1, in the mounting process, the edge with a movable pin 24 is aligned with the edge where a through hole 14 is located, the movable pin 24 is embedded in the through hole 14 to complete the limiting mounting of a combined body, then the combined body is mounted on a fastener by a wrench, a driving cavity 13 is matched with a hexagonal driving body 22 in the screwing process, after the combined body is mounted, a locknut 3 is screwed on the fastener by the wrench, in the screwing process, a first driving surface 231 controls a contraction part 32 of the locknut 3 to contract radially to clamp the fastener, the radial connection pretightening force of a bolt can be enhanced, the purpose of locking is achieved, meanwhile, a second driving surface 232 drives a clamping strip 33 to expand radially and is embedded in an annular limiting groove 121 of the nut mounting sleeve, the locknut and the nut mounting sleeve can be locked, the connection stability is ensured, and the locknut mounting sleeve is further improved.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (4)
1. A locknut is characterized in that: the nut installing structure comprises a nut installing sleeve (1), a driving nut (2) and a locking nut (3), wherein the driving nut (2) is installed in the nut installing sleeve (1), a driving part (23) is arranged above the driving nut (2), a tightening part (32) is arranged below the locking nut (3), a plurality of slots (321) are axially formed in the side wall of the tightening part (32), the driving part (23) drives the tightening part (32) to radially contract, a plurality of clamping strips (33) are arranged above the tightening part (32), an annular limiting groove (121) is formed in the inner wall of the nut installing sleeve (1), and the end part of each clamping strip (33) driven by the driving part (23) is radially expanded and embedded into the annular limiting groove (121); the driving part (23) is an annular convex body, a first driving surface (231) is arranged on the inner wall of the driving part (23), the first driving surface (231) is a conical surface, the first driving surface (231) is matched with the tightening part (32), a second driving surface (232) is arranged on the upper end surface of the driving part (23), the second driving surface (232) is an arc-shaped surface, and the second driving surface (232) is matched with the clamping strip (33); be equipped with first installation body (11) on nut installing sleeve (1), the shape of first installation body (11) cross-section outline is regular hexagon, first installation cavity (12) have been seted up in first installation body (11), annular spacing groove (121) have been seted up to the lateral wall of first installation cavity (12), the below of first installation cavity (12) is equipped with drive chamber (13), the cross-sectional shape of drive chamber (13) is regular hexagon, the below of first installation body (11) is equipped with spacing protruding edge (111), spacing protruding edge (111) cooperatees with the lower terminal surface of drive nut (2), be equipped with second installation cavity (112) in spacing protruding edge (111), the axis of second installation cavity (112) coincides mutually with the axis of first installation cavity (12).
2. A locknut as claimed in claim 1, wherein: drive nut (2) still include connector (21), hexagonal driving body (22), removable pin (24) and first screw cavity (25), the center of drive nut (2) is run through in first screw cavity (25), the top of connector (21) is equipped with drive division (23), the below of connector (21) is equipped with hexagonal driving body (22), hexagonal driving body (22) cooperatees with nut installation cover (1) inner chamber, blind hole (221) have been seted up to the lateral wall of hexagonal driving body (22), removable pin (24) are through spring mounting in blind hole (221), through-hole (14) have been seted up to the lateral wall of nut installation cover (1), removable pin (24) cooperate with through-hole (14).
3. A locknut as claimed in claim 1, wherein: the locking nut (3) further comprises a second mounting body (31) and a second threaded cavity (34), the shape of the outer contour of the cross section of the second mounting body (31) is a regular hexagon, the second threaded cavity (34) penetrates through the center of the locking nut (3), a tightening part (32) is arranged below the second mounting body (31), and the tightening part (32) is a conical body.
4. A locknut as claimed in claim 1, wherein: the figure of chucking strip (33) is two at least, chucking strip (33) are even circumference distribution, chucking strip (33) are L font elasticity card strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710377424.3A CN106958580B (en) | 2017-05-25 | 2017-05-25 | Anti-loose nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710377424.3A CN106958580B (en) | 2017-05-25 | 2017-05-25 | Anti-loose nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958580A CN106958580A (en) | 2017-07-18 |
| CN106958580B true CN106958580B (en) | 2022-11-25 |
Family
ID=59482143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710377424.3A Active CN106958580B (en) | 2017-05-25 | 2017-05-25 | Anti-loose nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958580B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538605B (en) * | 2017-09-21 | 2023-08-29 | 孙愉后 | Fastening piece |
| CN109458389B (en) * | 2018-12-20 | 2023-09-26 | 浙江安盛汽车零部件有限公司 | Nylon lock nut |
| CN110118219B (en) * | 2019-06-10 | 2024-05-17 | 江苏东奇标准件有限公司 | High-resistant Wen Luomu assembly |
| CN110185692B (en) * | 2019-07-02 | 2023-12-19 | 海盐县华昇汽车配件有限公司 | Extrusion type slotting lock nut |
| CN110685993B (en) * | 2019-10-24 | 2024-09-24 | 一开控股(青岛)集团有限公司 | Self-locking nut |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011017352A (en) * | 2009-07-07 | 2011-01-27 | Shohei Yajima | Locking nut |
| CN202732618U (en) * | 2012-07-24 | 2013-02-13 | 宁波汇通机械联接件有限公司 | Check nut |
| CN203756706U (en) * | 2013-12-26 | 2014-08-06 | 上海底特精密紧固件股份有限公司 | Controllable-pressure type locking combined nut |
| CN204591951U (en) * | 2015-05-12 | 2015-08-26 | 凯达铁建电气化铁路器材有限公司 | Self locking anti-loose nut |
| CN105626660A (en) * | 2016-03-25 | 2016-06-01 | 罗灿 | Independent controllable elastic sleeve lock nut |
| CN106369031B (en) * | 2016-11-14 | 2019-04-23 | 温州俱进五金制品有限公司 | A kind of modified form expansion bolt |
| CN106438636B (en) * | 2016-11-14 | 2019-05-31 | 常熟市标准件厂有限公司 | A kind of anti-theft bolt |
| CN206830612U (en) * | 2017-05-25 | 2018-01-02 | 海盐宇星螺帽有限责任公司 | A kind of stop nut |
-
2017
- 2017-05-25 CN CN201710377424.3A patent/CN106958580B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106958580A (en) | 2017-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 314300 No. 398, Xitangqiao section road, Wengjin highway, Xitangqiao street, Haiyan County, Jiaxing City, Zhejiang Province Applicant after: Yustar fastener (Jiaxing) Co.,Ltd. Address before: 314300 Xitangqiao changqian market town, Haiyan County, Jiaxing City, Zhejiang Province Applicant before: HAIYAN YUXING NUTS CO.,LTD. |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |