CN113685420B - Locking nut - Google Patents
Locking nut Download PDFInfo
- Publication number
- CN113685420B CN113685420B CN202110978940.8A CN202110978940A CN113685420B CN 113685420 B CN113685420 B CN 113685420B CN 202110978940 A CN202110978940 A CN 202110978940A CN 113685420 B CN113685420 B CN 113685420B
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- China
- Prior art keywords
- arc
- face
- hexagonal
- internal thread
- hexagonal pipe
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000004323 axial length Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
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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
- F16B33/00—Features common to bolt and nut
- F16B33/004—Sealing; Insulation
-
- 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
- F16B33/00—Features common to bolt and nut
- F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a locking nut which comprises a first hexagonal pipe, a second hexagonal pipe, a first internal thread, sliding grooves, through holes, a third hexagonal pipe, a circular ring, a first straight rod, a limiting needle, a first arc plate, a second internal thread and a spring. According to the invention, the sealing performance of the nut can be enhanced by fixing the sealing ring in the first hexagonal tube.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to the technical field of lock nuts.
Background
The nut is a part for tightly connecting mechanical equipment and is widely applied in industry and life, the nut is one of important connecting pieces of an engine, the engine can continuously vibrate during operation, the conventional nut is easy to shake loose after being installed and is not beneficial to connection among various parts of the engine, and the engine has larger potential safety hazard after the connecting nut between the parts loosens, so that a locking nut is necessary to be provided.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a locking nut which is firm to mount, not easy to loosen and good in limiting function.
In order to achieve the above purpose, the invention provides a lock nut, which comprises a first hexagonal pipe, a second hexagonal pipe, a first internal thread, a sliding groove, a through hole, a third hexagonal pipe, a circular ring, a first straight rod, a limit pin, a first arc-shaped plate, a second internal thread and a spring, wherein the upper end surface of the second hexagonal pipe is provided with the first coaxial hexagonal pipe, the lower end surface of the second hexagonal pipe is provided with the third coaxial hexagonal pipe, the lower end surface of the first hexagonal pipe and the upper end surface of the third hexagonal pipe are in parallel symmetry, the inner diameter of the second hexagonal pipe is smaller than that of the first hexagonal pipe and the third hexagonal pipe, the inner pipe wall of the second hexagonal pipe is provided with the first internal thread, the second hexagonal pipe is provided with a plurality of sliding grooves and a plurality of through holes which are axially arranged, the sliding grooves axially penetrate through the upper end surface and the lower end surface of the second hexagonal pipe, and the sliding grooves are arranged on the inner wall of the second hexagonal pipe, the through hole is arranged on a second hexagonal pipe on the inner side of a first hexagonal pipe, a coaxial ring is arranged in a third hexagonal pipe, a plurality of first straight rods are axially arranged on the upper end face of the ring, the first straight rods penetrate through the through hole, limiting needles are arranged on the upper end faces of the first straight rods, a plurality of first arc plates are axially arranged on the upper end face of the ring, a second arc plate is coaxially arranged on the upper end face of each first arc plate, the second arc plate is arranged in a sliding groove, second internal threads matched with the first internal threads are arranged on the second arc plates, a plurality of springs are arranged between the upper end face of the ring and the lower end face of the second hexagonal pipe, a sealing ring is arranged in the first hexagonal pipe, the limiting needles are punched into the sealing ring, the lower end face of the limiting needles is coaxially connected with the upper end face of the first straight rods, the outer diameter of the lower end face of the limiting needles is larger than the outer diameter of the through hole, the inner diameter of the ring is slightly larger than the large diameter of the first internal threads, the cross sections of the first arc-shaped plate and the second arc-shaped plate are arc-shaped and the arc-shaped plate and the circular ring are coaxial, the inner arc-shaped wall of the first arc-shaped plate is coplanar with the inner wall of the circular ring, the outer arc-shaped wall of the first arc-shaped plate is coplanar with the outer arc-shaped wall of the second arc-shaped plate, and the inner wall of the second arc-shaped plate is provided with a second internal thread adapted to the first internal thread.
Preferably, the first straight rods correspond to the through holes one by one, and the second arc-shaped plates correspond to the sliding grooves one by one.
Preferably, the radial depth of the sliding groove is greater than the radial length from the root to the crest of the first internal thread, the radial depth of the uppermost end of the sliding groove is slightly smaller than the radial depth of the lowermost end of the sliding groove, and the radial depth from the uppermost end of the sliding groove to the lowermost end of the sliding groove increases progressively.
Preferably, the axial length of the second arc-shaped plate and the axial length of the second hexagonal pipe are the same.
Preferably, the spring is in a compressed state.
Preferably, the axial length from the lower end face of the limiting needle to the lower end face of the circular ring is slightly greater than the sum of the axial lengths of the second hexagonal tube and the third hexagonal tube, and the axial length from the uppermost end of the limiting needle to the lower end face of the circular ring is smaller than the sum of the axial lengths of the first hexagonal tube, the second hexagonal tube and the third hexagonal tube.
Preferably, when the lower end face of the limiting needle contacts with the upper end face of the second hexagonal tube, the second internal thread is matched with the first internal thread.
The invention has the beneficial effects that: the sealing ring is fixed in the first hexagonal tube, so that the sealing performance of the nut can be enhanced, the nut is provided with a plurality of sliding grooves, a plurality of through holes and an internal threaded hole, water vapor and the like are easily gathered due to a large number of pores, the water vapor and the like are easily gathered but not scattered, so that the nut is easily rusted, and the sealing ring can prevent the water vapor from entering the pores of the nut, so that the nut is not easily rusted; when the lower end face of the circular ring is ejected out of the lower end face of the third hexagonal pipe by the spring, the second internal thread is matched with the first internal thread, and then the nut is screwed until the lower end face of the circular ring is ejected into the third hexagonal pipe, the second internal thread and the first internal thread can apply axially opposite acting forces to the screw rod, so that the nut is firmly installed and is not easy to loosen; the radial depth from the uppermost end of the sliding groove to the lowermost end of the sliding groove is increased progressively, so that after the lower end face of the circular ring is jacked into the third hexagonal tube, the plurality of second internal threads can radially clamp the screw rod, the nut is firmly installed and is not easy to loosen, the first internal threads are jacked upwards by the threads of the screw rod, the second internal threads are jacked downwards by the threads of the screw rod, and the nut simultaneously bears two axially opposite acting forces, so that the position of the nut can be limited, and the first internal threads and the second internal threads are matched to enable the nut to have a good limiting function; the spring is in a compressed state, so that the second internal thread and the first internal thread can be automatically matched before the nut is used each time; the axial length of spacing needle top to terminal surface under the ring is less than the axial length sum of first hexagonal pipe, second hexagonal pipe, third hexagonal pipe, prevents that the nut from installing back spacing needle and stretching out from first hexagonal pipe up end, and spacing needle stretches out from first hexagonal pipe up end and can influence the installation of forms such as two nuts, nut and other fastener collocation.
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 front view of a lock nut of the present invention.
Detailed Description
Referring to fig. 1, a lock nut includes a first hexagonal tube 1, a second hexagonal tube 2, a first internal thread 20, a sliding groove 21, a through hole 22, a third hexagonal tube 3, a circular ring 41, a first straight rod 42, a limit pin 421, a first arc-shaped plate 43, a second arc-shaped plate 44, a second internal thread 441, and a spring 45, the upper end surface of the second hexagonal tube 2 is provided with the first hexagonal tube 1 coaxially, the lower end surface of the second hexagonal tube 2 is provided with the third hexagonal tube 3 coaxially, the lower end surface of the first hexagonal tube 1 is parallel and symmetrical to the upper end surface of the third hexagonal tube 3, the inner diameter of the second hexagonal tube 2 is smaller than the inner diameters of the first and third hexagonal tubes 1, 3, the inner tube wall of the second hexagonal tube 2 is provided with the first internal thread 20, the second hexagonal tube 2 is provided with the sliding grooves 21 and the sliding grooves 22 axially disposed, the sliding groove 21 axially penetrates through the upper and lower end surfaces of the second hexagonal tube 2, the sliding groove 21 is disposed on the inner wall of the second hexagonal tube 2, the through hole 22 is arranged on the second hexagonal pipe 2 at the inner side of the first hexagonal pipe 1, the third hexagonal pipe 3 is internally provided with a coaxial circular ring 41, the upper end surface of the circular ring 41 is provided with a plurality of first straight rods 42 which are axially arranged, the first straight rods 42 penetrate through the through hole 22, the upper end surface of each first straight rod 42 is provided with a limit needle 421, the upper end surface of the circular ring 41 is provided with a plurality of first arc-shaped plates 43 which are axially arranged, the upper end surface of each first arc-shaped plate 43 is provided with a coaxial second arc-shaped plate 44, the second arc-shaped plates 44 are arranged inside the sliding chute 21, the second arc-shaped plates 44 are provided with second internal threads 441 which are matched with the first internal threads 20, a plurality of springs 45 are arranged between the upper end surface of the circular ring 41 and the lower end surface of the second hexagonal pipe 2, a sealing ring 11 is arranged inside the first hexagonal pipe 1, the limit needle 421 penetrates into the sealing ring 11, the lower end surface of the limit needle 421 is coaxially connected with the upper end surface of the first straight rods 42, the outer diameter of the lower end face of the limit needle 421 is larger than the outer diameter of the through hole 22, the inner diameter of the ring 41 is slightly larger than the major diameter of the first internal thread 20, the cross sections of the first arc-shaped plate 43 and the second arc-shaped plate 44 are arc-shaped, the arc is coaxial with the ring 41, the inner arc-shaped wall of the first arc-shaped plate 43 is coplanar with the inner wall of the ring 41, the outer arc-shaped wall of the first arc-shaped plate 43 is coplanar with the outer arc-shaped wall of the second arc-shaped plate 44, and the inner wall of the second arc-shaped plate 44 is provided with a second internal thread 441 matched with the first internal thread 20.
The first straight rods 42 correspond to the through holes 22 one by one, and the second arc plates 44 correspond to the sliding grooves 21 one by one.
The radial depth of the sliding groove 21 is greater than the radial length from the root to the crest of the first internal thread 20, the radial depth of the uppermost end of the sliding groove 21 is slightly smaller than the radial depth of the lowermost end of the sliding groove 21, and the radial depth from the uppermost end of the sliding groove 21 to the lowermost end of the sliding groove 21 increases progressively.
Wherein, the axial length of the second arc-shaped plate 44 and the axial length of the second hexagonal pipe 2 are the same.
Wherein the spring 45 is in a compressed state.
The axial length from the lower end face of the limiting needle 421 to the lower end face of the circular ring 41 is slightly greater than the sum of the axial lengths of the second hexagonal tube 2 and the third hexagonal tube 3, and the axial length from the uppermost end of the limiting needle 421 to the lower end face of the circular ring 41 is smaller than the sum of the axial lengths of the first hexagonal tube 1, the second hexagonal tube 2 and the third hexagonal tube 3.
And when the lower end surface of the limiting needle 421 contacts the upper end surface of the second hexagonal tube 2, the second internal thread 441 is matched with the first internal thread 20.
The working process of the invention is as follows:
in the working process of the locking nut, before the locking nut is installed, the lower end face of a limiting needle 421 is ensured to be in contact with the upper end face of a second hexagonal pipe 2, a second internal thread 441 is matched with a first internal thread 20, then the nut is screwed until the lower end face of a circular ring 41 is jacked into a third hexagonal pipe 3 by an installation face, a circular hole at the lower end of the circular ring 41 is a screw inlet end, and a corresponding sealing washer is sleeved on the screw below the circular ring 41 when the nut is installed.
According to the invention, the sealing ring 11 is fixed in the first hexagonal tube 1, so that the sealing property of the nut can be enhanced, the nut is provided with the plurality of chutes 21, the plurality of through holes 22 and the internal threaded hole, a large amount of pores enable water vapor and the like to be easily accumulated, the water vapor and the like are not scattered and easily cause the nut to rust, and the sealing ring 11 can prevent the water vapor from entering the pores of the nut, so that the nut is not easy to rust; when the spring 45 ejects the lower end face of the ring 41 from the lower end face of the third hexagonal tube 3, the second internal thread 441 is matched with the first internal thread 20, and then the nut is screwed until the lower end face of the ring 41 is ejected into the third hexagonal tube 3, and the second internal thread 441 and the first internal thread 20 apply axially opposite acting force on the screw rod, so that the nut is firmly installed and is not easy to loosen; the radial depth from the uppermost end of the sliding groove 21 to the lowermost end of the sliding groove 21 is increased progressively, so that after the lower end face of the circular ring 41 is jacked into the third hexagonal pipe 3, the plurality of second internal threads 441 can radially clamp the screw rod, the nut is firmly installed and is not easy to loosen, the first internal threads 20 are jacked upwards by the threads of the screw rod, the second internal threads 441 are jacked downwards by the threads of the screw rod, and the nut simultaneously bears two acting forces which are opposite in axial direction, so that the position of the nut is limited, and the first internal threads and the second internal threads 441 are matched to enable the nut to have a good limiting function; the spring 45 is in a compressed state, so that the second internal thread 441 can be automatically matched with the first internal thread 20 before the nut is used each time; the axial length of spacing needle 421 the top to terminal surface is less than the axial length sum of first hexagonal pipe 1, second hexagonal pipe 2, third hexagonal pipe 3 under the ring 41, prevents that the nut from installing back spacing needle 421 and stretching out from first hexagonal pipe 1 up end, and spacing needle 421 stretches out from first hexagonal pipe 1 up end can influence the installation of forms such as two nuts, nut and other fastener collocation.
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 (7)
1. A lock nut is characterized in that: comprises a first hexagonal pipe (1), a second hexagonal pipe (2), a first internal thread (20), a chute (21), a through hole (22), a third hexagonal pipe (3), a circular ring (41), a first straight rod (42), a limiting needle (421), a first arc plate (43), a second arc plate (44), a second internal thread (441) and a spring (45), wherein the upper end face of the second hexagonal pipe (2) is provided with the coaxial first hexagonal pipe (1), the lower end face of the second hexagonal pipe (2) is provided with the coaxial third hexagonal pipe (3), the lower end face of the first hexagonal pipe (1) and the upper end face of the third hexagonal pipe (3) are in parallel symmetry, the internal diameter of the second hexagonal pipe (2) is smaller than the internal diameters of the first hexagonal pipe (1) and the third hexagonal pipe (3), the internal thread (20) is arranged on the inner wall of the second hexagonal pipe (2), the second hexagonal pipe (2) is provided with a plurality of axial through holes (21) and a plurality of axial chutes (22) which penetrate through the second hexagonal pipe (21), and the through chute (21) is arranged on the inner side of the second hexagonal pipe (2), the upper end face of the circular ring (41) is provided with a plurality of first straight rods (42) which are axially arranged, the first straight rods (42) penetrate through the through holes (22), the upper end face of each first straight rod (42) is provided with a limiting needle (421), the upper end face of the circular ring (41) is provided with a plurality of first arc plates (43) which are axially arranged, the upper end face of each first arc plate (43) is provided with a coaxial second arc plate (44), each second arc plate (44) is arranged inside the corresponding sliding groove (21), each second arc plate (44) is provided with a second internal thread (441) which is matched with the corresponding first internal thread (20), a plurality of springs (45) are arranged between the upper end face of the circular ring (41) and the lower end face of the corresponding second hexagonal tube (2), a sealing ring (11) is arranged inside the corresponding first hexagonal tube (1), the limiting needle (421) penetrates into the sealing ring (11), the lower end face of the limiting needle (421) is connected with the upper end face of the first straight rods (42), and the outer diameter of the lower end face of the limiting needle (421) which is larger than the outer diameter of the through holes (22); the inner diameter of the circular ring (41) is slightly larger than the major diameter of the first internal thread (20), the sections of the first arc-shaped plate (43) and the second arc-shaped plate (44) are arc-shaped, the arc is coaxial with the circular ring (41), the inner arc-shaped wall of the first arc-shaped plate (43) is coplanar with the inner wall of the circular ring (41), the outer arc-shaped wall of the first arc-shaped plate (43) is coplanar with the outer arc-shaped wall of the second arc-shaped plate (44), and the inner wall of the second arc-shaped plate (44) is provided with a second internal thread (441) which is matched with the first internal thread (20).
2. The lock nut as claimed in claim 1, wherein: the first straight rods (42) correspond to the through holes (22) one by one, and the second arc-shaped plates (44) correspond to the sliding grooves (21) one by one.
3. The lock nut as claimed in claim 1, wherein: the radial depth of spout (21) is greater than the radial length of first internal thread (20) root to crest, spout (21) topmost radial depth slightly is less than spout (21) bottommost radial depth, and spout (21) topmost is to spout (21) bottommost radial depth increase progressively.
4. The lock nut as claimed in claim 1, wherein: the axial length of the second arc-shaped plate (44) and the axial length of the second hexagonal pipe (2) are the same.
5. The lock nut as claimed in claim 1, wherein: the spring (45) is in a compressed state.
6. The lock nut as claimed in claim 1, wherein: the axial length from the lower end face of the limiting needle (421) to the lower end face of the circular ring (41) is slightly larger than the sum of the axial lengths of the second hexagonal tube (2) and the third hexagonal tube (3), and the axial length from the uppermost end of the limiting needle (421) to the lower end face of the circular ring (41) is smaller than the sum of the axial lengths of the first hexagonal tube (1), the second hexagonal tube (2) and the third hexagonal tube (3).
7. The lock nut as claimed in claim 1, wherein: when the lower end face of the limiting needle (421) contacts the upper end face of the second hexagonal tube (2), the second internal thread (441) is matched with the first internal thread (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978940.8A CN113685420B (en) | 2021-08-25 | 2021-08-25 | Locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978940.8A CN113685420B (en) | 2021-08-25 | 2021-08-25 | Locking nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113685420A CN113685420A (en) | 2021-11-23 |
| CN113685420B true CN113685420B (en) | 2022-12-27 |
Family
ID=78582158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110978940.8A Active CN113685420B (en) | 2021-08-25 | 2021-08-25 | Locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113685420B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325009B (en) * | 2022-08-12 | 2024-06-21 | 嘉兴圣龙五金科技股份有限公司 | Lock bolt structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317163A (en) * | 1927-02-09 | 1929-08-15 | Audoin D Halloy | Improvements in and relating to lock nuts |
| JP2014081062A (en) * | 2012-10-12 | 2014-05-08 | Tsugunaga Tada | Lock bolt and nut |
| CN209324845U (en) * | 2018-12-20 | 2019-08-30 | 浙江安盛汽车零部件有限公司 | A kind of split type fastening nut |
| CN209494824U (en) * | 2018-12-27 | 2019-10-15 | 上海群力紧固件制造有限公司 | A kind of sealing nut |
| CN210318128U (en) * | 2019-07-24 | 2020-04-14 | 海盐华胜紧固件有限公司 | High-strength anti-loose and anti-drop hexagon nut |
| CN111637139A (en) * | 2020-07-21 | 2020-09-08 | 浙江安盛汽车零部件有限公司 | Locking nut with deformable teeth |
| CN213039630U (en) * | 2020-08-21 | 2021-04-23 | 嘉兴海缙五金科技股份有限公司 | A high-strength self-tightening nut for wheels |
| CN213298552U (en) * | 2020-09-29 | 2021-05-28 | 浙江坤亿佳机械制造有限公司 | Improved nut |
-
2021
- 2021-08-25 CN CN202110978940.8A patent/CN113685420B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317163A (en) * | 1927-02-09 | 1929-08-15 | Audoin D Halloy | Improvements in and relating to lock nuts |
| JP2014081062A (en) * | 2012-10-12 | 2014-05-08 | Tsugunaga Tada | Lock bolt and nut |
| CN209324845U (en) * | 2018-12-20 | 2019-08-30 | 浙江安盛汽车零部件有限公司 | A kind of split type fastening nut |
| CN209494824U (en) * | 2018-12-27 | 2019-10-15 | 上海群力紧固件制造有限公司 | A kind of sealing nut |
| CN210318128U (en) * | 2019-07-24 | 2020-04-14 | 海盐华胜紧固件有限公司 | High-strength anti-loose and anti-drop hexagon nut |
| CN111637139A (en) * | 2020-07-21 | 2020-09-08 | 浙江安盛汽车零部件有限公司 | Locking nut with deformable teeth |
| CN213039630U (en) * | 2020-08-21 | 2021-04-23 | 嘉兴海缙五金科技股份有限公司 | A high-strength self-tightening nut for wheels |
| CN213298552U (en) * | 2020-09-29 | 2021-05-28 | 浙江坤亿佳机械制造有限公司 | Improved nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113685420A (en) | 2021-11-23 |
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