CN114526282A - Never-loosening bolt pair - Google Patents
Never-loosening bolt pair Download PDFInfo
- Publication number
- CN114526282A CN114526282A CN202210064865.9A CN202210064865A CN114526282A CN 114526282 A CN114526282 A CN 114526282A CN 202210064865 A CN202210064865 A CN 202210064865A CN 114526282 A CN114526282 A CN 114526282A
- Authority
- CN
- China
- Prior art keywords
- stud
- nut
- annular baffle
- limiting
- clamping piece
- 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
- 238000012856 packing Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002265 prevention 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
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/103—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking cup washer, ring or sleeve surrounding the nut or bolt head and being partially deformed on the nut or bolt head, or on the object itself
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Clamps And Clips (AREA)
Abstract
The invention belongs to the technical field of bolts and nuts, and relates to a never-loosening bolt pair, which comprises a bolt and a nut, wherein the bolt comprises a nut and a stud, the periphery of the stud is provided with external threads, and the nut is in threaded fit connection with the external threads of the stud; the clamping piece is arranged on the side surface of the stud, and the extending direction of the notch is parallel to the axis of the stud; the nut comprises a tightening nut body, one end face of the tightening nut body is provided with a limiting bulge, the side face of the limiting bulge is provided with a limiting groove, and the clamping piece is clamped in the limiting groove; the annular baffle is sleeved on the periphery of the stud and arranged between the tightening nut body and the clamping piece, relative movement between the annular baffle and the nut is limited through the limiting mechanism, and the shape of the inner ring of the annular baffle is matched with that of the outer ring of the stud with the notch. The invention can realize that the locking is not easy to loosen for a long time in a vibration environment, and all the parts can be repeatedly used.
Description
Technical Field
The invention relates to a bolt pair capable of never loosening, and belongs to the technical field of bolts and nuts.
Background
The bolt pair is a common component connected by a mechanical structure, comprises a bolt and a nut, has a wide application range, and is relatively stable in connection and fixation in a static environment; but the bolt is vice also often is used under the vibration environment, and when the bolt is vice for a long time under the vibration environment, because can have the vibration frequency difference between the connection structure, can be to the nut application of force, and the nut can take place rotatory not hard up under the combined action of thrust and vibration, so can produce certain displacement between the connection structural component after long time, make the nut not hard up, influence the operation stability and the security of connection structure even whole equipment.
Current patent CN110469575A a screw subassembly that never moves, its major structure includes bolt and nut, the external screw thread department of double-screw bolt is equipped with a plurality of rectangular grooves, be equipped with slot and cyclic annular jump ring groove on the nut internal diameter wall, fix a position in inserting the slot through the location fitting pin between bolt and the nut, can play the condition of injecing nut pivoted to a certain extent, but still have the risk of deviating from with the influence location fitting pin of vibration along with the lapse of time, its course of working is complicated relatively.
Patent CN111577742A a never become flexible from tight bolt washer nut system, its major structure includes bolt and nut, and the nut is two nut structures, is equipped with the packing ring between two nuts, is equipped with the sawtooth between packing ring and the last nut, is equipped with a slope between packing ring and the lower nut, and the problem that the nut is not hard up can effectively be solved in the locking of three cooperation, but uses to be disposable basically and can not reuse.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the never-loosening bolt pair can realize that the bolt pair is not easy to loosen for a long time in a locked vibration environment, all parts can be repeatedly used, and the use cost can be reduced.
The bolt pair capable of never loosening comprises a bolt and a nut, wherein the bolt comprises a nut and a stud, an external thread is arranged on the periphery of the stud, and the nut is in threaded fit connection with the external thread of the stud; the clamping device is characterized by also comprising an annular baffle and a clamping piece, wherein the side surface of the stud is provided with a notch, and the extending direction of the notch is parallel to the axis of the stud; the nut comprises a tightening nut body, one end face of the tightening nut body is provided with a limiting bulge, the side face of the limiting bulge is provided with a limiting groove, and the clamping piece is clamped in the limiting groove; the annular baffle is sleeved on the periphery of the stud and arranged between the tightening nut body and the clamping piece, relative movement between the annular baffle and the nut is limited through the limiting mechanism, and the shape of the inner ring of the annular baffle is matched with that of the outer ring of the stud with the notch. .
When the connecting piece is fixed, the stud penetrates through the fixed connecting piece, then the nut is sleeved on the stud to be screwed, after the stud is screwed and fixed, the annular baffle is sleeved in from the end part of the stud until the annular baffle moves to the nut, the nut is rotated again at the moment, the position of the nut is finely adjusted, the limiting mechanism plays a role in limiting the rotation of the nut, finally, the clamping piece is installed on the top surface of the annular baffle and is embedded into the limiting groove, and the clamping piece prevents the annular baffle from being separated from the end part of the stud. Because the side surface of the stud is provided with the notch, and the shape of the inner ring of the annular baffle is matched with the shape of the outer ring of the stud, the annular baffle and the stud cannot rotate relatively, so that the annular baffle can effectively prevent the nut and the stud from rotating relatively, the clamping piece blocks the annular baffle and prevents the annular baffle from being separated from the stud, and finally, the nut cannot be displaced on the stud and cannot be loosened between the connecting pieces. Under the vibration environment, the clamping piece can not be separated from the limiting groove, so that the annular baffle plate can not be separated, and the nut and the stud are prevented from rotating. The limiting groove can be arranged on the side surface of the limiting protrusion close to the stud, and also can be arranged on the side surface of the limiting protrusion departing from the stud. When the double-screw bolt is disassembled, the clamping piece is taken out firstly, then the annular baffle plate is taken down from the double-screw bolt, the disassembly can be completed by rotating the nut, and the assembly and the disassembly are all convenient.
Preferably, the limiting mechanism comprises at least one stop block fixedly connected with the outer ring of the annular baffle plate, a plurality of limiting protrusions are arranged on the end face of the tightening nut body, and the stop blocks are matched with the two adjacent limiting protrusions to be clamped. The number of the stop blocks is basically matched with the number of the limiting protrusions, and the annular baffle is limited by the studs and cannot rotate freely, so that the annular baffle limits the limiting protrusions through the stop blocks, and the nut body is prevented from rotating freely finally. The more the number of the limiting bulges is, the smaller the fine adjustment angle of the nut is when the annular baffle plate is matched with the nut; however, the more the number of the limiting protrusions is, the more the processing difficulty of the whole nut is, and the actual number of the limiting protrusions is generally determined according to the specific size of the nut.
Preferably, the limiting mechanism comprises a first meshing tooth arranged on the bottom end face of the annular baffle and a second meshing tooth arranged on the upper end face of the tightening nut body, and the first meshing tooth is meshed with the second meshing tooth. The annular baffle is limited by the stud and cannot rotate freely, and the first meshing teeth and the second meshing teeth are meshed, so that the nut body cannot rotate freely when being screwed down.
Preferably, the gap on the side surface of the stud is a strip-shaped groove, and the inner ring of the annular baffle is provided with a convex block which is inserted into the strip-shaped groove. When the annular baffle plate is sleeved on the stud, the protruding block is inserted into the strip-shaped groove, and the protruding block moves along the strip-shaped groove until the stop block of the annular baffle plate is embedded into the two limiting protrusions.
Preferably, the gap on the side surface of the stud is at least one notch plane, the inner ring of the annular baffle is provided with at least one matching plane, and the size of the matching plane is matched with that of the notch plane. The periphery of the stud is not in a standard column shape, and the shape of the inner ring of the annular baffle is matched with the shape of the outer ring of the stud, so that no relative rotating rod is arranged between the annular baffle and the stud.
Preferably, the clamping piece is an elastic clamping spring which is a standard piece, the manufacturing cost is low, the stability of the clamping piece can be kept in static and vibration environments, and the annular baffle is effectively prevented from being separated from the stud.
Preferably, the end face of the screwing nut body provided with the limiting bulge is provided with a clamping piece mounting gap, so that the clamping piece is convenient to mount and dismount.
Compared with the prior art, the invention has the beneficial effects that:
the locking device is reasonable in structural design, can realize that the locking device is not easy to loosen for a long time in a vibration environment after being locked, and all the components can be repeatedly used; the processing is convenient and the processing cost is low.
Drawings
FIG. 1 is a first schematic view of a permanent loose bolt pair;
FIG. 2 is a first schematic view of a nut;
FIG. 3 is a first schematic view of the annular baffle structure;
FIG. 4 is a perspective view of a first bolt;
FIG. 5 is a first top view of the bolt;
FIG. 6 is a second top view of the bolt;
FIG. 7 is a schematic view of a second annular baffle structure;
FIG. 8 is a second schematic view of the nut structure;
FIG. 9 is a schematic view of a second permanent bolt pair;
FIG. 10 is a third schematic view of the annular baffle configuration;
FIG. 11 is a third schematic view of the nut;
fig. 12 is a perspective view of the bolt.
In the figure: 1. a bolt; 2. a nut; 3. an annular baffle; 4. a retainer; 5. screwing down the nut body; 6. a limiting bulge; 7. a limiting groove; 8. a first meshing tooth; 9. a stopper; 10. a nut; 11. a stud; 12. a notch plane; 13. a strip-shaped groove; 14. a raised block; 15. a mating plane; 16. a clamp mounting gap; 17. and a second meshing tooth.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1 to 12, the bolt pair which is never loosened in the present invention includes a bolt 1 and a nut 2, the bolt 1 includes a nut 10 and a stud 11, an external thread is provided on the periphery of the stud 11, and the nut 2 is connected with the external thread of the stud 11 in a thread fit manner; the clamping device is characterized by further comprising an annular baffle 3 and a clamping piece 4, wherein a notch is formed in the side surface of the stud 11, and the extending direction of the notch is parallel to the axis of the stud 11; the nut 2 comprises a tightening nut body 5, one end face of the tightening nut body 5 is provided with a limiting bulge 6, the side face of the limiting bulge 6 is provided with a limiting groove 7, and the clamping piece 4 is clamped in the limiting groove 7; the annular baffle 3 is sleeved on the periphery of the stud 11 and arranged between the screwing nut body 5 and the clamping piece 4, relative movement between the annular baffle 3 and the nut 2 is limited through a limiting mechanism, and the shape of the inner ring of the annular baffle 3 is matched with the shape of the outer ring of the stud 11 with a notch.
In this embodiment:
the limiting mechanism has two schemes, which are respectively as follows,
the first limiting mechanism scheme is as follows: as shown in fig. 1-3 and fig. 7-8, the limiting mechanism comprises at least one stop 9 fixedly connected with the outer ring of the annular baffle plate 3, a plurality of limiting protrusions 6 are arranged on the end face of the tightening nut body 5, and the stop 9 is matched and clamped between two adjacent limiting protrusions 6. The number of the stop blocks 9 is basically matched with the number of the limiting protrusions 6, and the annular baffle 3 cannot rotate freely under the limitation of the studs 11, so that the annular baffle 3 limits the limiting protrusions 6 through the stop blocks 9, the nut body 5 is prevented from rotating freely, and the purpose of looseness prevention is achieved. The more the number of the limiting bulges 6 is, the smaller the fine adjustment angle of the nut 2 is when the annular baffle 3 is matched with the nut 2; however, the more the number of the limiting protrusions 6 is, the more the processing difficulty of the whole nut 2 is, and the actual number of the limiting protrusions is generally determined according to the specific size of the nut 2.
The second limiting mechanism scheme is as follows: as shown in fig. 9-11, the limiting mechanism includes a first engaging tooth 8 provided on a bottom end surface of the ring-shaped blocking plate 3 and a second engaging tooth 17 provided on an upper end surface of the tightening nut body 5, and the first engaging tooth 8 is engaged with the second engaging tooth 17. The annular baffle 3 is limited by the stud 11 and cannot rotate freely, and the first meshing teeth 8 and the second meshing teeth 17 are meshed, so that the tightening nut body 5 cannot rotate freely.
The matching of the gap arranged on the side surface of the stud 11 and the annular baffle 3 is divided into two schemes: the first scheme is as follows: as shown in the figures 6, 7 and 12, the gap on the side surface of the stud 11 is a strip-shaped groove 13, the inner ring of the annular baffle plate 3 is provided with a convex block 14, and the convex block 14 is inserted into the strip-shaped groove 13. When the ring baffle 3 is fitted over the stud 11, the projection 14 is inserted into the strip-shaped groove 13, and the projection 14 moves along the strip-shaped groove 13 until the stop 9 of the ring baffle 3 engages in the two stop projections 6.
Scheme II: as shown in fig. 4 and 5, the notch on the side surface of the stud 11 is at least one cut plane 12, the inner ring of the ring baffle 3 is provided with at least one matching plane 15, and the matching plane 15 is matched with the cut plane 12 in shape and size. The periphery of the stud 11 is not in a standard column shape, and the shape of the inner ring of the annular baffle 3 is matched with the shape of the outer ring of the stud 11, so that no relative rotating rod exists between the annular baffle 3 and the stud 11.
The clamping piece 4 is an elastic clamp spring which is a standard component, the manufacturing cost is low, the stability of the clamping piece can be kept in static and vibration environments, and the annular baffle 3 is effectively prevented from being separated from the stud 11.
The end face of the screwing nut body 5 provided with the limiting protrusion 6 is provided with a clamping piece mounting gap 16, so that the clamping piece 4 can be conveniently mounted and dismounted.
When the connecting piece is fixed, the stud 11 penetrates through the fixed connecting piece, then the nut 2 is sleeved on the stud 11 to be screwed, after the fixing is screwed, the annular baffle plate 3 is sleeved in from the end part of the stud 11 until the annular baffle plate 3 moves to the nut 2, the nut 2 is rotated again at the moment, the position of the nut 2 is finely adjusted, the limiting mechanism is enabled to play a role in limiting the rotation of the nut, finally the clamping piece 4 is installed on the top surface of the annular baffle plate 3, and the clamping piece 4 is embedded into the limiting groove 7. Because the side surface of the stud 11 is provided with the notch, and the shape of the inner ring of the annular baffle plate 3 is matched with the shape of the outer ring of the stud 11, the annular baffle plate 3 and the stud 11 cannot rotate relatively, so that the annular baffle plate 3 can effectively prevent the nut 2 and the stud 11 from rotating relatively, the clamping piece 4 blocks the annular baffle plate 3 and prevents the annular baffle plate 3 from being separated from the stud 11, and therefore, the nut 2 cannot be displaced on the stud 11, and the connecting piece cannot be loosened. Under the vibration environment, the clamping piece 4 cannot be separated from the limiting groove 7, so that the annular baffle 3 cannot be separated, and the nut 2 and the stud 11 are prevented from rotating. The limiting groove 7 can be arranged on the side surface of the limiting bulge 6 close to the stud 11, and also can be arranged on the side surface of the limiting bulge 6 departing from the stud 11. During the dismantlement, take out chucking spare 4 earlier, then take off annular baffle 3 from double-screw bolt 11, rotate nut 2 afterwards and can accomplish the dismantlement, it is all comparatively convenient to install and dismantle. The invention belongs to the technical field of bolts and nuts, and relates to a never-loosening bolt pair, which comprises a bolt and a nut, wherein the bolt comprises a nut and a stud, the periphery of the stud is provided with an external thread, and the nut is in threaded fit connection with the external thread of the stud; the clamping device is characterized by also comprising an annular baffle and a clamping piece, wherein the side surface of the stud is provided with a notch, and the extending direction of the notch is parallel to the axis of the stud; the nut comprises a tightening nut body, one end face of the tightening nut body is provided with a limiting bulge, the side face of the limiting bulge is provided with a limiting groove, and the clamping piece is clamped in the limiting groove; the annular baffle is sleeved on the periphery of the stud and arranged between the tightening nut body and the clamping piece, relative movement between the annular baffle and the nut is limited through the limiting mechanism, and the shape of the inner ring of the annular baffle is matched with that of the outer ring of the stud with the notch. The invention can realize that the locking is not easy to loosen for a long time in a vibration environment, and all the parts can be repeatedly used.
Claims (7)
1. A bolt pair capable of being never loosened comprises a bolt (1) and a nut (2), wherein the bolt (1) comprises a nut (10) and a stud (11), external threads are arranged on the periphery of the stud (11), and the nut (2) is in threaded fit connection with the external threads of the stud (11); the method is characterized in that: the clamping device is characterized by further comprising an annular baffle (3) and a clamping piece (4), wherein a notch is formed in the side surface of the stud (11), and the extending direction of the notch is parallel to the axis of the stud (11); the nut (2) comprises a tightening nut body (5), one end face of the tightening nut body (5) is provided with a limiting bulge (6), the side face of the limiting bulge (6) is provided with a limiting groove (7), and the clamping piece (4) is clamped in the limiting groove (7); the annular baffle (3) is sleeved on the periphery of the stud (11) and arranged between the tightening nut body (5) and the clamping piece (4), relative movement between the annular baffle (3) and the nut (2) is limited through a limiting mechanism, and the shape of the inner ring of the annular baffle (3) is matched with the shape of the outer ring of the stud (11) with a notch.
2. The never-loosening bolt pair according to claim 1, wherein: stop gear includes that annular baffle (3) outer lane connects fixed at least one dog (9), and spacing arch (6) of screwing up nut body (5) terminal surface are equipped with a plurality ofly, and dog (9) cooperation card is between two adjacent spacing archs (6).
3. The never-loosening bolt pair according to claim 1, wherein: the limiting mechanism comprises a first meshing tooth (8) arranged on the bottom end face of the annular baffle (3) and a second meshing tooth (17) arranged on the upper end face of the screwing nut body (5), and the first meshing tooth (8) and the second meshing tooth (17) are meshed with each other.
4. The permanently unfastened bolt pair of claim 1, wherein: the gap on the side surface of the stud (11) is a strip-shaped groove (13), the inner ring of the annular baffle (3) is provided with a convex block (14), and the convex block (14) is inserted into the strip-shaped groove (13).
5. The never-loosening bolt pair according to claim 1, wherein: the gap on the side surface of the stud (11) is at least one notch plane (12), the inner ring of the annular baffle (3) is provided with at least one matching plane (15), and the matching plane (15) is matched with the notch plane (12) in shape and size.
6. The never-loosening bolt pair according to claim 1, wherein: the clamping piece (4) is an elastic clamping spring.
7. The permanently loose bolt pair according to any one of claims 1, 2 or 5, characterized in that: the end face of the screwing nut body (5) provided with the limiting bulge (6) is provided with a clamping piece mounting gap (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210064865.9A CN114526282A (en) | 2022-01-20 | 2022-01-20 | Never-loosening bolt pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210064865.9A CN114526282A (en) | 2022-01-20 | 2022-01-20 | Never-loosening bolt pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114526282A true CN114526282A (en) | 2022-05-24 |
Family
ID=81620716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210064865.9A Pending CN114526282A (en) | 2022-01-20 | 2022-01-20 | Never-loosening bolt pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114526282A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090311072A1 (en) * | 2008-06-14 | 2009-12-17 | Brian Kruse | Ihigh crown anti-rotation bolt |
| US7927052B1 (en) * | 2009-10-26 | 2011-04-19 | Arnold Varden | Locking axle nut |
| KR20180110889A (en) * | 2017-03-30 | 2018-10-11 | 한화에어로스페이스 주식회사 | Fastening assembly |
| CN109989988A (en) * | 2019-04-26 | 2019-07-09 | 姜建业 | Jam nut |
| CN212028295U (en) * | 2020-04-21 | 2020-11-27 | 刘启超 | From locking fastening components that takes off of card formula |
| CN213628431U (en) * | 2020-10-26 | 2021-07-06 | 刘启超 | Clamping spring type anti-loosening fastening assembly |
-
2022
- 2022-01-20 CN CN202210064865.9A patent/CN114526282A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090311072A1 (en) * | 2008-06-14 | 2009-12-17 | Brian Kruse | Ihigh crown anti-rotation bolt |
| US7927052B1 (en) * | 2009-10-26 | 2011-04-19 | Arnold Varden | Locking axle nut |
| KR20180110889A (en) * | 2017-03-30 | 2018-10-11 | 한화에어로스페이스 주식회사 | Fastening assembly |
| CN109989988A (en) * | 2019-04-26 | 2019-07-09 | 姜建业 | Jam nut |
| CN212028295U (en) * | 2020-04-21 | 2020-11-27 | 刘启超 | From locking fastening components that takes off of card formula |
| CN213628431U (en) * | 2020-10-26 | 2021-07-06 | 刘启超 | Clamping spring type anti-loosening fastening assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11884147B2 (en) | Circumferential locking mechanism and battery locking device comprising same, power battery pack, and vehicle | |
| US6183293B1 (en) | Electrical connector latching mechanism | |
| CN102705343B (en) | With the bolt of rotation preventing mechanism | |
| KR101472952B1 (en) | Anti-loose nut and bolt | |
| CN205190490U (en) | Locking anti -disassembly bolt that moves | |
| US4031936A (en) | Preassembled spring washer fastener unit | |
| CN212360457U (en) | Anti-loosening screw fastener | |
| CN211778449U (en) | Anti-loosening structure and screw assembly | |
| CN109515148A (en) | Circumferential lockable mechanism, the battery locking device including it, power battery pack and vehicle | |
| CN114526282A (en) | Never-loosening bolt pair | |
| KR102082598B1 (en) | Installation device | |
| CN111316006B (en) | Active locking fastener | |
| CN111173828A (en) | Anti-loosening structure and screw fastener with same | |
| CN213419650U (en) | Thread anti-falling mechanism | |
| KR102098074B1 (en) | Bolt-nut assembly | |
| CN112943781A (en) | Flower card formula check bolt subassembly | |
| CN213655413U (en) | Convenient screw of screwing up and locking moving | |
| US11933340B2 (en) | Fastener assemblies and nut plate assemblies for fastener assemblies | |
| KR20200039397A (en) | Locking nut | |
| KR101895222B1 (en) | Insert nut for drawer | |
| CN219366550U (en) | Anti-loosening integrated structure of nut and screw | |
| CN111828443A (en) | Fastening assembly and cooker | |
| CN216951196U (en) | Claw bolt | |
| CN210739095U (en) | Fastening structure | |
| CN220727640U (en) | Connecting piece of industrial lens |
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 |