CN110645254A - End face taper centering interlocking locknut external member - Google Patents
End face taper centering interlocking locknut external member Download PDFInfo
- Publication number
- CN110645254A CN110645254A CN201910921712.XA CN201910921712A CN110645254A CN 110645254 A CN110645254 A CN 110645254A CN 201910921712 A CN201910921712 A CN 201910921712A CN 110645254 A CN110645254 A CN 110645254A
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- boss
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- nut
- hole
- taper
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- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect 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
-
- 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
- F16B39/122—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts foreseen with mating surfaces inclined, i.e. not normal, to the bolt axis
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Clamps And Clips (AREA)
Abstract
An end face taper centering interlocking locknut kit comprises an upper nut with an axial threaded through hole I and a lower nut with an axial threaded through hole II, wherein one end face of the upper nut is provided with a boss, and the end face of the boss has a taper; a cylindrical groove matched with the boss is concavely formed in one end face of the lower nut, and the contact plane between the bottom of the groove and the end face of the boss is provided with a taper matched with the end face of the boss; under the assembly state, the terminal surface of boss is located the bottom of recess, the center pin of screw through-hole I and II center pin coincidences of screw through-hole, the boss of upper nut is clearance fit with the columniform recess of lower nut. The nut suite adopts the novel end face taper centering interlocking locknut suite which avoids eccentric applying lateral force to the screw rod additionally by end face taper centering, avoids the lateral force of the thread caused by the side surface matching of the eccentric cone, and has better safety and anti-seismic performance than the shockproof nut on the current market.
Description
Technical Field
The invention relates to the field of fasteners, in particular to an end face taper centering interlocking locknut kit.
Background
The eccentric nut in Japan utilizes the matching of eccentric taper surfaces to achieve the shockproof effect similar to the wedge wedged in the thread. The eccentric nut is widely applied to the high-speed rail industry, is convenient to disassemble and maintain and can be used for multiple times. After the upper nut and the lower nut are locked, the lower nut can transmit the vibration force to the upper nut from the eccentric contact surface in a one-way mode due to the parallel offset eccentric angle, and therefore the phenomenon that the nut is loosened due to the fact that vibration is transmitted uniformly due to the fact that the full contact surface of a common nut is avoided. However, the eccentric taper surface of the eccentric nut is easy to generate additional lateral force applied to the thread during assembly, and the service effect or the service life of the thread is affected. And the eccentric nut is generally stressed in a lateral pressing mode, so that the screw is additionally stressed in a lateral force mode, and the risk of fracture of the screw caused by the lateral force is caused. Therefore, from the safety point of view, the nut is not loosened but the screw rod is broken, and great potential safety hazard also exists.
Disclosure of Invention
The invention provides a novel end face taper centering interlocking locknut suite which avoids eccentric applying lateral force to a screw rod by adopting end face taper centering, avoids lateral stress of threads caused by side surface matching of eccentric cones, and has better safety and anti-seismic performance than the conventional shockproof nuts on the market.
The technical scheme adopted by the invention is as follows: an end face taper centering interlocking locknut kit comprises an upper nut with an axial threaded through hole I and a lower nut with an axial threaded through hole II, wherein the aperture of the threaded through hole I is the same as that of the threaded through hole II; one end face of the upper nut is provided with a boss, and the end face of the boss has taper; a cylindrical groove matched with the boss is concavely formed in one end face of the lower nut, the central axis of the cylindrical groove is overlapped with the central axis of the threaded through hole II, and the contact plane between the bottom of the groove and the end face of the boss is made into a taper matched with the end face of the boss; under the assembly state, the terminal surface of boss is located the bottom of recess, the center pin of screw through-hole I and II center pin coincidences of screw through-hole, the boss of upper nut is clearance fit with the columniform recess of lower nut.
The further technical scheme is as follows: the profile design requirements of the boss are as follows: the bottom of the groove of the lower nut is suspended in the air at the contact plane of the lug boss end surface of the upper nut.
The further technical scheme is as follows: the profile of the boss is one or any one of eccentric circle, ellipse, diamond, perfect circle, ring and triangle.
The further technical scheme is as follows: the profile of the boss is eccentric round with the axial thread through hole I.
The further technical scheme is as follows: the profile of boss is the concentric regular circle with axial screw thread through-hole I, just the up end of boss is provided with a unfilled corner.
By adopting the technical scheme, the end face taper centering interlocking locknut external member has the following beneficial effects:
compared with the working principle of the current eccentric nut, the two side surfaces of the upper nut and the lower nut are in clearance fit without side surface contact, so that no additional lateral force is generated to be applied to a thread working part, the fatigue strength and the meshing force of the thread are absolutely not influenced by the lateral stress, and the working condition of the eccentric nut is greatly superior to that of the Japanese eccentric nut. The eccentric boss of the Japanese eccentric nut still does not influence assembly when the machining out-of-tolerance is less, but the radial force brought to the thread by the out-of-tolerance part can influence the service life and the effect, and even if the size is not out-of-tolerance at all, the interference extrusion can still generate extra lateral force to be applied to the thread. The boss of the upper nut is in cylindrical clearance fit with the two side faces of the cylindrical groove of the lower nut (the required unilateral downward pressure can be achieved by utilizing eccentricity or unfilled corners), and the assembly can not be carried out at all when the size is out of tolerance, so that extra lateral stress on the threads caused by errors is fundamentally avoided.
In addition, in the invention, when the upper and lower molded surfaces of the nut are jointed, the stress surface acts on the end surface. Compared with the Japanese eccentric nut, the acting force of the end face taper of the invention is not a centripetal force, but the main function of the invention is centering in order to prevent the upper nut and the lower nut from deviating and decentering after being occluded, and the coaxiality of the upper nut and the lower nut after being screwed is ensured as much as possible. Therefore, the eccentric design (can be designed into any shape such as eccentric circle, rhombus, concentric circle, ring, ellipse, triangle and the like) mainly comprises the steps that the suspended part is used for enabling the lower nut of the groove to generate downward reverse pressure to bite the thread surface at the position when the lower nut is locked, the larger the pressure is, the stronger the locking force is, the more excellent the anti-loosening performance is, and the locking force of the invention is the upper and lower locking forces parallel to the axis. The eccentric locking principle of the Japanese eccentric nut is to generate centripetal force to lock by pressing a protruded profile, and the force generated by locking is centripetal instead of the up-and-down locking force of the invention. According to the invention, the thread surface of the screw is seized by utilizing the upper and lower interlocking forces coaxial with the screw generated by the molded surfaces of the upper and lower nuts, all stress points only act on the single-side thread meshing surface, and the strength of the screw is not influenced by any centripetal force; the upper nut and the lower nut have interlocking force, so that the upper nut and the lower nut on the boss can lock the part at any moment, the upper nut and the lower nut are interlocked when the lower nut is screwed into the groove and locked, the lower nut does not rotate along with the upper nut until the required torque is screwed, the axial force borne by the part cannot reach the limit borne by the screw, and the screw can be protected and a good anti-loosening effect can be achieved. Therefore, the end face taper centering interlocking locknut suite has better safety performance than a centripetal force locking mode of a Japanese eccentric nut and is safer than a locknut which is locked by large torque on the market.
In conclusion, the eccentric contact stress surface of the nut sleeve is only the end surface, and the screw is not additionally subjected to lateral force by lateral pressure stress as in the case of the Japanese eccentric nut, so that the fracture risk of the screw caused by the lateral force is avoided to the maximum extent, and the safety and the shockproof effect are better than those of the Japanese eccentric nut. And this nut external member simple to operate is reliable, dismantles simply.
The technical features of the end face taper centering interlocking locknut set of the present invention will be further explained with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of an upper nut structure according to a first embodiment;
FIG. 2 is a cross-sectional view of an upper nut according to one embodiment;
FIG. 3 is a perspective view of an upper nut of the first embodiment;
FIG. 4 is a schematic view of a lower nut structure according to the first embodiment;
FIG. 5 is a cross-sectional view of a lower nut of the first embodiment;
FIG. 6 is a bottom perspective view of the nut of the first embodiment;
FIG. 7 is a schematic view of the assembly of the upper nut and the lower nut of the first embodiment;
fig. 8 is a diagram illustrating a state of use of the end-face taper centering interlocking locknut assembly according to the embodiment of the invention.
FIG. 9 is a schematic view of the upper nut structure of the second embodiment;
FIG. 10 is a cross-sectional view of the upper nut of the second embodiment;
FIG. 11 is a perspective view of the upper nut of the second embodiment;
FIG. 12 is a schematic view of the lower nut structure of the second embodiment;
FIG. 13 is a cross-sectional view of the lower nut of the second embodiment;
FIG. 14 is a bottom perspective view of the nut of the second embodiment;
FIG. 15 is a schematic view of the assembly of the upper nut and the lower nut of the second embodiment;
fig. 16 is a diagram illustrating the use of the interlocking locknut assembly with end-face taper centering according to the second embodiment of the present invention.
In the figure:
1-upper nut I, 11-round boss I, 12-thread through hole Ia;
2-lower nut I, 21-cylindrical groove I, 22-threaded through hole IIa;
3-mounting a nut II, 31-a circular boss II, 32-a thread through hole Ib, 33-a unfilled corner;
4-lower nut II, 41-cylindrical groove II, 42-threaded through hole IIb;
5-screw.
Detailed Description
An end face taper centering interlocking locknut kit comprises an upper nut with an axial threaded through hole I and a lower nut with an axial threaded through hole II, wherein the aperture of the threaded through hole I is the same as that of the threaded through hole II; one end face of the upper nut is provided with a boss, and the end face of the boss has taper; a cylindrical groove matched with the boss is concavely formed in one end face of the lower nut, the central axis of the cylindrical groove is overlapped with the central axis of the threaded through hole II, and the contact plane between the bottom of the groove and the end face of the boss is made into a taper matched with the end face of the boss; under the assembly state, the terminal surface of boss is located the bottom of recess, the center pin of screw through-hole I and II center pin coincidences of screw through-hole, the boss of upper nut is clearance fit with the columniform recess of lower nut.
The profile design requirements of the boss are as follows: the bottom of the groove of the lower nut is suspended in the air at the contact plane of the lug boss end surface of the upper nut.
The invention ensures that the upper nut and the lower nut generate single-side pressing interlocking force through a specific boss profile (without being limited to any shapes such as eccentric circles, ellipses, rhombuses, perfect circles, rings, triangles and the like), and can lock the thread surface of the screw rod to be incapable of rotating and withdrawing through centering by the taper end surface, thereby falling into the patent protection scope of the invention. The invention also obtains the conclusion through a large number of practical tests, any profile matching can obtain good anti-loosening performance as long as the principle of the invention can be followed, the anti-loosening performance can be completely detected through a GB/T10431(2008) transverse vibration test, and the test can be continued until the fatigue fracture of the screw rod still has no looseness.
The present invention is further illustrated by the following examples of relatively representative appearances of the boss profiles being eccentric circular and concentric circular, but is not intended to be limited thereby in scope by the described examples.
The first embodiment is as follows:
as shown in fig. 1 to 7, the end face taper centering interlocking locknut kit comprises an upper nut I1 with an axial threaded through hole Ia 12 and a lower nut I2 with an axial threaded through hole IIa, wherein the diameter of the threaded through hole Ia 12 is the same as that of the threaded through hole IIa 22.
One end face of the upper nut I1 is provided with a circular boss I11, the profile of the circular boss I11 is an eccentric circle eccentric to the axial threaded through hole Ia 12, as shown in FIG. 1, wherein a represents the central line of the circular boss I11, and b represents the central line of the axial threaded through hole Ia 12; the end face A (see figures 2 and 3) of the circular boss I11 is provided with a taper.
A cylindrical groove I21 matched with the circular boss I11 is formed in the inner side of one end face of the lower nut I2 in a concave mode, the central axis of the cylindrical groove I21 is overlapped with the central axis of the threaded through hole IIa, and the bottom of the cylindrical groove I21 and the contact plane of the end face of the circular boss B (see figure 5) are made into taper matched with the end face of the circular boss I11.
In an assembly state, the end face of the circular boss I11 is located at the bottom of the cylindrical groove I21, the central axis of the threaded through hole Ia 12 coincides with the central axis of the threaded through hole IIa 22, and the circular boss I11 of the upper nut I is in clearance fit with the cylindrical groove I21 of the lower nut I. As can be seen from FIG. 7, the position E shows that the two side surfaces of the cylindrical groove I21 and the circular boss I11 are in clearance fit, and lateral force caused by excessive extrusion is avoided; the cooperation of the tapered end faces (A, B) to ensure that the coaxial shafts do not shift after locking is shown at F; the figure G shows that the eccentric position causes the screw to hang in the air, and the locking force is concentrated at the position so that the upper nut and the lower nut can clamp the thread surface of the screw in a one-way mode; f1 shows the upward pushing force generated after locking, the direction of the pushing force is the direction indicated by the arrow; in the figure f2 shows that the suspension causes a unilateral downward pressure, the direction of which is indicated by the arrow. The end face taper centering interlocking locknut kit of the embodiment is used as shown in fig. 8.
The key point of this embodiment is that the terminal surface tapering centering can let the effort that leads to after the locking of one-way locking force because of the off-centre only apply on the unilateral screw thread, and can not extra apply to produce horizontal centripetal lateral force for the screw rod, furthest has protected the screw rod, furthest has avoided the cracked risk of screw rod.
Example two:
as shown in fig. 9 to 15, the end face taper centering interlocking locknut kit comprises an upper nut ii 3 with an axial threaded through hole lb 32 and a lower nut ii 4 with an axial threaded through hole lb 42, wherein the diameter of the threaded through hole lb 32 is the same as that of the threaded through hole lb 42.
One end face of the upper nut II 3 is provided with a circular boss II 31, the profile of the circular boss II 31 is a perfect circle concentric with the axial threaded through hole Ib 32, and the upper end face of the circular boss II 31 is provided with an unfilled corner 33. As shown in fig. 9, c indicates the center line of the circular boss ii 31 and also indicates the center line of the threaded through hole ii b42, and the center line of the circular boss ii 31 coincides with the center line of the threaded through hole ii b 42; the end surface C (see figures 10 and 11) of the circular boss II 31 is provided with a taper; a cylindrical groove II 41 matched with the circular boss II 31 is concavely formed in one end face of the lower nut II 4, the central axis of the cylindrical groove II is overlapped with the central axis of the threaded through hole IIb 42, and the contact plane D (see figure 13) of the bottom of the cylindrical groove II 41 and the end face of the circular boss is made into a taper matched with the end face of the circular boss II 31.
In an assembled state, the end face of the circular boss II 31 is located at the bottom of the cylindrical groove II 41, the central axis of the threaded through hole Ib 32 is overlapped with the central axis of the threaded through hole IIb 42, and the circular boss II 31 of the upper nut II 3 is in clearance fit with the cylindrical groove II 41 of the lower nut II 4. As can be seen from FIG. 15, H, I shows that the two sides of the cylindrical groove II 41 and the circular boss II 31 are in clearance fit, and lateral force caused by excessive extrusion is avoided; in the figure, J shows that the single-side pressure of the unfilled corner is larger than the unfilled corner direction due to the hanging unfilled corner of the round boss II 31; the taper end face (C, D) is matched to ensure that the coaxial shafts are not deviated after locking; f1 shows the upward pushing force generated after locking, the direction of the pushing force is the direction indicated by the arrow; in the figure f2 shows that the suspension causes a unilateral downward pressure, the direction of which is indicated by the arrow. The use state of the present embodiment is shown in fig. 16.
The key point of this embodiment is that the dead angle tapering centering can let the effort that leads to the locking of one-way locking force because of the unfilled corner only apply on unilateral screw thread, and can not extra apply to produce horizontal centripetal lateral force for the screw rod, furthest has protected the screw rod, furthest has avoided the cracked risk of screw rod.
In the two embodiments, the taper centering of the end face is adopted, so that no lateral force is applied to the screw, and the downward unidirectional locking force generated by the groove nut at the suspended position is utilized to seize the thread profile to play a role in preventing looseness. The screw rod is provided with a locking screw, the locking screw is provided with a locking screw hole, the locking screw hole is provided with a locking screw hole, the locking.
The parts not involved in the present invention are the same as or can be implemented using the prior art. While the invention has been described in detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that the present invention is not limited to the details of the foregoing embodiments, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides an end face tapering centering interlocking locknut external member which characterized in that: the nut comprises an upper nut with an axial threaded through hole I and a lower nut with an axial threaded through hole II, wherein the aperture of the threaded through hole I is the same as that of the threaded through hole II; one end face of the upper nut is provided with a boss, and the end face of the boss has taper; a cylindrical groove matched with the boss is concavely formed in one end face of the lower nut, the central axis of the cylindrical groove is overlapped with the central axis of the threaded through hole II, and the contact plane between the bottom of the groove and the end face of the boss is made into a taper matched with the end face of the boss; under the assembly state, the terminal surface of boss is located the bottom of recess, the center pin of screw through-hole I and II center pin coincidences of screw through-hole, the boss of upper nut is clearance fit with the columniform recess of lower nut.
2. The end face taper centering interlocking locknut assembly of claim 1, wherein: the profile design requirements of the boss are as follows: the bottom of the groove of the lower nut is suspended in the air at the contact plane of the lug boss end surface of the upper nut.
3. The end face taper centering interlocking locknut assembly of claim 2, wherein: the profile of the boss is one or any one of eccentric circle, ellipse, diamond, perfect circle, ring and triangle.
4. The end face taper centering interlocking locknut assembly of claim 3, wherein: the profile of the boss is eccentric round with the axial thread through hole I.
5. The end face taper centering interlocking locknut assembly of claim 3, wherein: the profile of boss is the concentric regular circle with axial screw thread through-hole I, just the up end of boss is provided with a unfilled corner.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921712.XA CN110645254A (en) | 2019-09-27 | 2019-09-27 | End face taper centering interlocking locknut external member |
| PCT/CN2020/115197 WO2021057534A1 (en) | 2019-09-27 | 2020-09-15 | Interlocking locknut kit with end face taper centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921712.XA CN110645254A (en) | 2019-09-27 | 2019-09-27 | End face taper centering interlocking locknut external member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110645254A true CN110645254A (en) | 2020-01-03 |
Family
ID=69011547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910921712.XA Withdrawn CN110645254A (en) | 2019-09-27 | 2019-09-27 | End face taper centering interlocking locknut external member |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110645254A (en) |
| WO (1) | WO2021057534A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128209A (en) * | 2020-08-12 | 2020-12-25 | 江苏大学 | Upper locking type elastic conical locknut |
| WO2021057534A1 (en) * | 2019-09-27 | 2021-04-01 | 周峰 | Interlocking locknut kit with end face taper centering |
| WO2022205435A1 (en) * | 2021-04-02 | 2022-10-06 | 周峰 | End surface taper centering and interlocking locknut kit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987134A (en) * | 2006-12-14 | 2007-06-27 | 江苏江成冶金设备制造有限公司 | Threaded connection anti-loose fastener |
| CN202579579U (en) * | 2012-03-08 | 2012-12-05 | 海泰斯（北京）工程设备有限公司 | Eccentric clamping nut |
| JP2016133136A (en) * | 2015-01-16 | 2016-07-25 | ハードロック工業株式会社 | Special double nut for looseness prevention |
| CN207740331U (en) * | 2017-09-15 | 2018-08-17 | 洪永持 | A kind of stubborn fastening nut of tap hand |
| CN108662005A (en) * | 2018-07-24 | 2018-10-16 | 江苏东奇标准件有限公司 | A kind of special eccentric locking nut |
| CN108679073A (en) * | 2018-08-03 | 2018-10-19 | 周峰 | Shockproof screw nut external member |
| WO2019031052A1 (en) * | 2017-08-09 | 2019-02-14 | ハードロック工業株式会社 | Adjustment bolt locking structure |
| CN210509906U (en) * | 2019-09-27 | 2020-05-12 | 周峰 | End face taper centering interlocking locknut external member |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572108Y (en) * | 2002-09-26 | 2003-09-10 | 天津理工学院 | Double locknut utilizing taper surface |
| JP6437313B2 (en) * | 2015-01-07 | 2018-12-12 | ハードロック工業株式会社 | Locking special double nut |
| CN206458702U (en) * | 2017-02-21 | 2017-09-01 | 骆红刚 | Eccentric O-shaped self-locking nut |
| CN209458261U (en) * | 2018-11-01 | 2019-10-01 | 周虹 | Unilateral empty avoiding ellipse shockproof screw nut external member |
| CN110645254A (en) * | 2019-09-27 | 2020-01-03 | 周峰 | End face taper centering interlocking locknut external member |
-
2019
- 2019-09-27 CN CN201910921712.XA patent/CN110645254A/en not_active Withdrawn
-
2020
- 2020-09-15 WO PCT/CN2020/115197 patent/WO2021057534A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987134A (en) * | 2006-12-14 | 2007-06-27 | 江苏江成冶金设备制造有限公司 | Threaded connection anti-loose fastener |
| CN202579579U (en) * | 2012-03-08 | 2012-12-05 | 海泰斯（北京）工程设备有限公司 | Eccentric clamping nut |
| JP2016133136A (en) * | 2015-01-16 | 2016-07-25 | ハードロック工業株式会社 | Special double nut for looseness prevention |
| WO2019031052A1 (en) * | 2017-08-09 | 2019-02-14 | ハードロック工業株式会社 | Adjustment bolt locking structure |
| CN207740331U (en) * | 2017-09-15 | 2018-08-17 | 洪永持 | A kind of stubborn fastening nut of tap hand |
| CN108662005A (en) * | 2018-07-24 | 2018-10-16 | 江苏东奇标准件有限公司 | A kind of special eccentric locking nut |
| CN108679073A (en) * | 2018-08-03 | 2018-10-19 | 周峰 | Shockproof screw nut external member |
| CN210509906U (en) * | 2019-09-27 | 2020-05-12 | 周峰 | End face taper centering interlocking locknut external member |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057534A1 (en) * | 2019-09-27 | 2021-04-01 | 周峰 | Interlocking locknut kit with end face taper centering |
| CN112128209A (en) * | 2020-08-12 | 2020-12-25 | 江苏大学 | Upper locking type elastic conical locknut |
| WO2022205435A1 (en) * | 2021-04-02 | 2022-10-06 | 周峰 | End surface taper centering and interlocking locknut kit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021057534A1 (en) | 2021-04-01 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200103 |