CN116557401B - Wedge-shaped double-gasket anti-loosening assembly - Google Patents
Wedge-shaped double-gasket anti-loosening assembly Download PDFInfo
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- CN116557401B CN116557401B CN202310652101.6A CN202310652101A CN116557401B CN 116557401 B CN116557401 B CN 116557401B CN 202310652101 A CN202310652101 A CN 202310652101A CN 116557401 B CN116557401 B CN 116557401B
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- wedge
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- threaded fastener
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- 230000002265 prevention Effects 0.000 claims abstract description 10
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
Abstract
The invention discloses a wedge-shaped double-gasket anti-loosening assembly, which is used for loosening prevention of a threaded fastener and comprises the following components: the upper gasket and the lower gasket are mutually embedded through wedge blocks on the contact surface, the height of the wedge blocks on the upper gasket is sequentially reduced along the screwing direction of the threaded fastener, when the lower gasket rotates around the loosening direction of the threaded fastener, the upper gasket and the lower gasket slide and are dislocated relatively, the upper gasket and the lower gasket are wedged between the threaded fastener and a fastened object, the wedge angle value range of the wedge blocks is accurately calculated according to the friction coefficient of the threads, the friction coefficient between the wedge blocks, the friction coefficient of the surface of the fastened object and the thread lift angle, and the reliable wedge locking of the upper gasket and the lower gasket is ensured.
Description
The invention belongs to the technical field of anti-loosening fasteners, and particularly relates to a wedge-shaped double-gasket anti-loosening assembly.
Background
Threaded connections are common fastening connection forms in the mechanical field, however, under high-frequency and high-amplitude vibration or impact conditions, the threaded fastener usually rotates in a loosening direction, so that a fastened object is loosened and displaced, and fastening fails, and therefore, the loosening prevention of the threaded fastener is particularly important.
The wedge-shaped double-gasket anti-loosening is a common anti-loosening mode, such as CN107477072A, CN215805674U and US20160003287A1 in the prior art, wherein an upper layer gasket and a lower layer gasket are arranged between a fastener and a fastened piece, the upper layer gasket and the lower layer gasket are mutually matched through a contact surface wedge-shaped block, and when the fastener rotates in a loosening direction, the upper layer gasket and the lower layer gasket relatively slide and misplace along the wedge-shaped block to be wedged between the fastener and the fastened piece, so that further loosening is prevented.
In the prior art, the heights of the wedge blocks on the upper gasket and the lower gasket are sequentially increased along the tightening direction of the fastener, namely, the inclination direction of the wedge blocks is the same as the screwing direction of the threads. When the double-gasket anti-loosening assembly is used, the lower gasket is directly contacted with the fastened piece, the transverse reciprocating vibration of the fastened piece is transmitted to the lower gasket, the lower gasket has a rotating tendency, when the lower gasket rotates along the loosening direction of the fastened piece under the action of vibration, the wedge-shaped blocks on the upper gasket and the lower gasket are completely matched, the rotating direction is vertical surface contact, no relative sliding space exists, and the lower gasket can push the fastened piece to rotate through a very large component force of the upper gasket to enable the fastening piece to be loosened initially.
In addition, for the wedge angle, US20160003287A1 sets the wedge angle to be greater than the thread lead angle to ensure that when thread loosening occurs, the increase in the height of the double-shim assembly produced by the relative slippage of the wedge is greater than the height lift caused by rotation of the fastener in the loosening direction, producing a wedging effect. However, simply setting the wedge angle of the wedge block to be larger than the thread lead angle does not consider the friction force of the double-gasket assembly in service, and the friction force is a key factor of whether the double-gasket assembly can maintain wedging self-locking, and the above-mentioned wedge angle setting which ignores the friction force often occurs in a vibration environment: 1) The wedge angle is too small, and the wedging force is insufficient to compress the fastener against loosening. 2) After the wedge angle is overlarge and the height of the wedge-shaped blocks is increased, the wedge-shaped blocks are easy to slide reversely again, so that the height of the double-gasket combination is reduced, and the wedging state is difficult to maintain.
Therefore, how to avoid the initial loosening of the wedge-shaped double-gasket locking assembly and how to reasonably design the wedge angle to stably and reliably maintain the double-gasket wedging state is a problem to be solved in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a wedge-shaped double-gasket anti-loosening assembly, which can quickly, stably and reliably enter a self-locking state, reduces the possibility of loosening a threaded fastener and has stronger anti-loosening performance.
In order to achieve the above object, the present invention provides the following technical solutions:
a wedge-shaped double washer anti-loosening assembly for use in loosening prevention of threaded fasteners, comprising: the upper surface of the lower gasket is provided with a second wedge block; the upper gasket and the lower gasket are mutually embedded through the first wedge-shaped block and the second wedge-shaped block, the height of the first wedge-shaped block is sequentially reduced along the screwing direction, and the lowest end of the first wedge-shaped block is the tail end of the first wedge-shaped block; the lower end face of the first wedge block and the upper end face of the second wedge block are oppositely arranged and mutually attached; when the central lines of the upper gasket and the lower gasket are perpendicular to the horizontal plane, the acute angle between the lower end face of the first wedge block and the horizontal plane and the acute angle between the upper end face of the second wedge block and the horizontal plane are wedge angles alpha, and the alpha range is as follows:
wherein: alpha is a wedge angle; beta is the thread lead angle; k0 is the friction coefficient between the lower gasket and the surface of the fastened object; k1 is the thread friction coefficient; and k2 is the friction coefficient of the contact surface of the first wedge block and the second wedge block.
Preferably, the screw friction coefficient k1 is in the range of: the friction coefficient k2 of the contact surface of the first wedge block and the second wedge block is in the range of 0.1< k1< 0.2: 0.1< k2<0.2.
Preferably, the upper surface of the upper spacer that contacts the threaded fastener has a plurality of anti-slip teeth.
Preferably, the anti-slip tooth heights increase sequentially in the thread tightening direction.
Preferably, the anti-slip tooth top surface is an inclined surface, and the included angle between the inclined surface and the horizontal plane is smaller than 45 degrees.
Preferably, the anti-slip tooth hardness is less than the hardness of the threaded fastener.
Preferably, the anti-slip tooth hardness is greater than or equal to the hardness of the threaded fastener.
Preferably, the threaded fastener is a nut or bolt.
Preferably, the number of the first wedge blocks and the second wedge blocks is greater than 2.
Preferably, the number of the first wedge block and the second wedge block is 3, 6 or 12.
Preferably, the upper gasket and the lower gasket are both regular hexagons.
Compared with the prior art, the double-gasket anti-loosening assembly provided by the invention has the following beneficial technical effects:
1. the invention sets the wedge blocks of the upper gasket in the wedge-shaped double-gasket anti-loosening assembly to be sequentially reduced in height along the screw tightening direction, and when the lower gasket rotates along the loosening direction under the vibration action of the fastened object, the upper gasket and the lower gasket can be wedged between the screw fastener and the fastened object along the wedge blocks in a dislocation way. The lower gasket is prevented from loosening by pushing the threaded fastener on the upper gasket through the wedge-shaped block contact elevation.
2. According to the invention, after the upper gasket and the lower gasket are relatively slid and misplaced, wedging self-locking is formed between the threaded fastener and the fastened object, the wedging state is maintained directly, the key factor, namely friction force is taken as a main consideration, and the value range of the wedge angle of the wedge block is accurately calculated according to the friction coefficient between threads, the friction coefficient between the wedge blocks, the friction between the lower gasket and the surface of the fastened object and the thread lift angle. When the lower gasket rotates in the loosening direction, the upper gasket and the lower gasket slide and are dislocated along the wedge block with a specific wedge angle, so that a wedging state is formed between the threaded fastener and the fastened object rapidly, stably and reliably, and further loosening is avoided. The problem that the wedge-shaped anti-loose assembly is difficult to effectively self-lock in the service process in the prior art is solved. The self-locking condition suitable for the wedge block inclination direction and thread rotation direction reverse locking component is obtained.
3. The anti-slip teeth are arranged on the contact surface of the upper gasket and the threaded fastener, so that the binding force between the upper gasket and the threaded fastener is enhanced, the wedging state of the double-gasket assembly between the threaded fastener and a fastened object in the anti-loosening process is maintained, and the re-loosening after wedging is avoided.
4. The anti-skid teeth are in a left-high and right-low shape, so that the torque coefficient is reduced in the screwing process of the threaded fastener, and the corresponding pretightening force is achieved.
5. Proper wedge blocks are arranged, so that proper contact stress is obtained, abrasion is not easy, a better mode effect can be brought, and meanwhile, the difficulty of a production process is reduced.
6. In the screwed-down state, the upper gasket wedge and the lower gasket wedge are mutually engaged. The wedge blocks are well engaged, so that the locking between the wedge blocks is not easy to break under the action of external force, and initial loosening is not easy to generate.
7. The upper gasket and the lower gasket are both regular hexagons, so that the threaded fastener, the upper gasket and the lower gasket can be screwed down simultaneously by using a tool, and wedge-shaped blocks of the upper gasket and the lower gasket are combined to obtain a better anti-loosening effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a wedge-shaped double-gasket locking assembly;
FIG. 2 is a schematic view of an upper spacer;
FIG. 3 is a schematic view of a lower spacer;
FIG. 4 is a schematic view of a wedge-shaped dual washer-down assembly mated with a threaded fastener.
Wherein the reference symbols in the figures have the following meanings:
1. a gasket is arranged on the upper part; 11. a first wedge block; 12. anti-slip teeth; 121. an anti-slip tooth top surface; 111. the lower end surface of the first wedge block;
2. a lower gasket; 21. a second wedge block; 211. the upper end surface of the second wedge block;
3. a threaded fastener.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
As shown in fig. 1-4, the present invention provides a wedge-shaped double washer anti-loosening assembly for use in loosening prevention of threaded fasteners 3, comprising: the upper gasket 1 and the lower gasket 2, the lower surface of the upper gasket 1 is provided with a first wedge block 11, and the upper surface of the lower gasket is provided with a second wedge block 21. The upper gasket 1 and the lower gasket 2 are mutually embedded through the first wedge block 11 and the second wedge block 21, the height of the first wedge block 11 is sequentially reduced along the screwing direction, and the lowest end of the first wedge block 11 is the tail end of the first wedge block.
The lower end face 111 of the first wedge 11 and the upper end face 211 of the second wedge 21 are disposed opposite to each other and are bonded to each other. When the central lines of the upper gasket 1 and the lower gasket 2 are perpendicular to the horizontal plane, the acute included angle between the lower end surface 111 of the first wedge-shaped block 11 and the horizontal plane and the acute included angle between the upper end surface 211 of the second wedge-shaped block 21 and the horizontal plane are the wedge angle alpha.
When the lower gasket 2 rotates around the loosening direction of the screw thread, the wedge-shaped block 21 on the lower gasket 2 slides and misplaces relative to the wedge-shaped block 11 on the upper gasket 1, and is wedged between the screw thread fastener 3 and the fastened object.
When the wedge-shaped double-gasket locking assembly is used, the upper gasket 1 and the lower gasket 2 are used for locking the threaded fastener 3, the lower gasket 2 is in surface contact with a fastened object, the lower surface of the threaded fastener 3 is in surface contact with the upper surface of the upper gasket 1, and the fastened object is tightly pressed through the upper gasket 1 and the lower gasket 2.
The wedge-caulking self-locking is formed after the upper gasket 1 and the lower gasket 2 are relatively slid and misplaced, the friction force is taken as a main consideration factor, a corresponding balance relation is established, and the wedge angle alpha is determined to be within the range of value according to the thread lift angle beta, the friction coefficient k0 between the lower gasket 2 and the surface of a fastened object, the thread friction coefficient k1, the friction coefficient k2 of the contact surface of the first wedge block 11 and the second wedge block 21:
wherein: alpha is a wedge angle; beta is the thread lead angle; k0 is the friction coefficient between the lower gasket and the surface of the fastened object; k1 is the thread friction coefficient; k2 is the friction coefficient of the contact surface of the first wedge 11 and the second wedge 21.
When the wedge angle alpha meets the relation, the lower end face 111 of the first wedge block 11 of the upper gasket 1 and the upper end face 211 of the second wedge block 21 of the lower gasket are in dislocation compression contact after sliding relatively, so that the height of the double gasket is changed, the double gasket anti-loosening assembly rapidly and stably enters a self-locking state, the upper gasket 1 and the lower gasket 2 slide and dislocation mutually, are wedged between the threaded fastener 3 and a fastened object, the lower gasket 2 does not drive the upper gasket 1 and the threaded fastener 3 to loosen continuously, and a reliable anti-loosening effect is achieved.
For example, when the thread rise angle β is 3.15 °, the wedge angle α may be determined to be 5 ° based on the friction coefficient k0 between the lower pad and the surface of the fastened object, the friction coefficient k2 of the contact surfaces of the first wedge 11 and the second wedge 21, and the thread friction coefficient k 1. The anti-loosening assembly is subjected to anti-loosening performance test on a transverse vibration testing machine, the test frequency is 12.5Hz, the vibration times are 1500 times, the residual fastening force/initial fastening force is 95.7% after the test, and the anti-loosening performance is good.
Preferably, the screw friction coefficient k1 is in the range of: the friction coefficient k2 of the contact surfaces of the first wedge block 11 and the second wedge block 21 is in the range of 0.1< k1< 0.2: 0.1< k2<0.2.
Preferably, the threaded fastener 3 is a nut or a bolt.
Preferably, the upper surface of the upper spacer 1 that contacts the threaded fastener 3 has a plurality of anti-slip teeth 12.
Preferably, the hardness of the anti-slip teeth 12 is greater than or equal to the hardness of the threaded fastener 3, and in the tightened state, the small teeth are embedded in the threaded fastener 3, increasing the surface tension, and acting to stabilize the threaded fastener 3.
Preferably, the anti-slip teeth 12 have a hardness less than the hardness of the threaded fastener 3, the anti-slip teeth 12 acting to increase friction.
Preferably, the anti-slip teeth 12 increase in height sequentially in the direction of tightening the threads, reducing the torque coefficient during tightening of the threaded fastener 3, facilitating the corresponding pretension.
Preferably, the height of the anti-skid teeth 12 is 0.1-1.0mm, and the top surface 121 of the anti-skid teeth 12 is an inclined surface, and the included angle between the inclined surface and the horizontal plane is smaller than 45 degrees.
Preferably, the number of the first wedge 11 and the second wedge 21 is 3, 6 or 12. The more wedge blocks, the smaller the bearing area of the wedge blocks under the same external force, the larger the friction force and pressure on the wedge blocks, and the more serious the abrasion and damage. The selection of the number can obtain proper contact stress and is not easy to wear, so that a better anti-loosening effect can be brought, and meanwhile, the method is also an optimal selection in the aspect of difficulty of a production process.
Preferably, in the tightened state of the threaded fastener 3, the first wedge 11 and the second wedge 21 are mutually engaged. The wedge blocks are well engaged, so that the locking between the wedge blocks is not easy to break under the action of external force, and initial loosening is not easy to generate.
Preferably, the threaded fastener 3 is screwed together with the upper washer 1, the lower washer 2, and the threaded fastener 3 during the screwing process, and the first wedge 11 and the second wedge 21 are engaged with each other and rotated simultaneously, so as to obtain a better anti-loosening effect.
Preferably, the upper gasket 1 and the lower gasket 2 are both regular hexagons, so that the threaded fastener 3, the upper gasket 1 and the lower gasket 2 can be screwed down simultaneously by using a tool, and the first wedge-shaped block 11 and the second wedge-shaped block 21 can be engaged to obtain a better anti-loosening effect.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.
Claims (10)
1. A wedge-shaped double washer anti-loosening assembly for use in loosening prevention of threaded fasteners, comprising: the upper surface of the lower gasket is provided with a second wedge block; the upper gasket and the lower gasket are mutually embedded through the first wedge-shaped block and the second wedge-shaped block, the height of the first wedge-shaped block is sequentially reduced along the screwing direction, and the lowest end of the first wedge-shaped block is the tail end of the first wedge-shaped block; the lower end face of the first wedge block and the upper end face of the second wedge block are oppositely arranged and mutually attached; the upper gasket and the lower gasket can be wedged between the threaded fastener and the fastened object in a staggered manner along the wedge-shaped block; when the central lines of the upper gasket and the lower gasket are perpendicular to the horizontal plane, the acute angle between the lower end face of the first wedge block and the horizontal plane and the acute angle between the upper end face of the second wedge block and the horizontal plane are wedge angles alpha, and the alpha range is as follows:
;
wherein: alpha is a wedge angle; beta is the thread lead angle; k0 is the friction coefficient between the lower gasket and the surface of the fastened object; k1 is the thread friction coefficient; and k2 is the friction coefficient of the contact surface of the first wedge block and the second wedge block.
2. The wedge double-shim lock assembly of claim 1, wherein the thread friction coefficient k1 is in the range of: the friction coefficient k2 of the contact surface of the first wedge block and the second wedge block is in the range of 0.1< k1< 0.2: 0.1< k2<0.2.
3. A wedge double washer-down prevention assembly as in claim 1 wherein the upper washer has a plurality of anti-slip teeth on an upper surface thereof in contact with the threaded fastener.
4. A wedge double washer-down prevention assembly according to claim 3, wherein the anti-slip tooth heights are sequentially increased in the screw tightening direction.
5. The wedge-shaped double-gasket locking assembly of claim 4, wherein the anti-slip tooth top surface is a bevel, and the angle between the bevel and the horizontal plane is less than 45 degrees.
6. A wedge double washer-down prevention assembly according to claim 3, wherein the anti-slip teeth hardness is less than the hardness of the threaded fastener.
7. A wedge double washer-down prevention assembly according to claim 3, wherein the anti-slip tooth hardness is greater than or equal to the hardness of the threaded fastener.
8. A wedge double washer-down prevention assembly according to claim 1, wherein the threaded fastener is a nut or bolt.
9. The wedge double shim lock assembly of claim 1, wherein the number of first and second wedges is greater than 2.
10. The wedge-shaped double-gasket locking assembly of claim 1, wherein the upper gasket and the lower gasket are both regular hexagons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310652101.6A CN116557401B (en) | 2023-06-05 | 2023-06-05 | Wedge-shaped double-gasket anti-loosening assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310652101.6A CN116557401B (en) | 2023-06-05 | 2023-06-05 | Wedge-shaped double-gasket anti-loosening assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116557401A CN116557401A (en) | 2023-08-08 |
| CN116557401B true CN116557401B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310652101.6A Active CN116557401B (en) | 2023-06-05 | 2023-06-05 | Wedge-shaped double-gasket anti-loosening assembly |
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| CN (1) | CN116557401B (en) |
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| CN117526144B (en) * | 2024-01-08 | 2024-04-16 | 宁波天安智能电网科技股份有限公司 | Prefabricated cabin type transformer substation |
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|---|---|---|---|---|
| EP0350711A1 (en) * | 1988-07-14 | 1990-01-17 | Hong Kong Disc Lock Company, Ltd. | Locking device for threaded fastener |
| US5190423A (en) * | 1991-02-15 | 1993-03-02 | Ewing Paul E | Locking fastener |
| CN206988268U (en) * | 2017-06-14 | 2018-02-09 | 沈航 | A kind of jam nut pad based on common fixed piece |
| CN112412951A (en) * | 2020-11-20 | 2021-02-26 | 浙江自紧王机械有限公司 | Combined type inclined plane or chute type structural connection is vice |
| CN213575098U (en) * | 2020-08-20 | 2021-06-29 | 丁菲 | Anti-loosening self-tightening device |
| CN215444735U (en) * | 2021-09-09 | 2022-01-07 | 拉萨誉致信科技有限公司 | Anti-loosening nut assembly |
| CN114135564A (en) * | 2021-11-29 | 2022-03-04 | 拉萨誉致信科技有限公司 | Anti-loosening nut and gasket assembly |
| CN216742392U (en) * | 2022-01-12 | 2022-06-14 | 李建明 | Anti-loose nut |
| CN114876939A (en) * | 2022-04-11 | 2022-08-09 | 陈榕 | Anti-loosening bolt fastening device |
-
2023
- 2023-06-05 CN CN202310652101.6A patent/CN116557401B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350711A1 (en) * | 1988-07-14 | 1990-01-17 | Hong Kong Disc Lock Company, Ltd. | Locking device for threaded fastener |
| US5190423A (en) * | 1991-02-15 | 1993-03-02 | Ewing Paul E | Locking fastener |
| CN206988268U (en) * | 2017-06-14 | 2018-02-09 | 沈航 | A kind of jam nut pad based on common fixed piece |
| CN213575098U (en) * | 2020-08-20 | 2021-06-29 | 丁菲 | Anti-loosening self-tightening device |
| CN112412951A (en) * | 2020-11-20 | 2021-02-26 | 浙江自紧王机械有限公司 | Combined type inclined plane or chute type structural connection is vice |
| CN215444735U (en) * | 2021-09-09 | 2022-01-07 | 拉萨誉致信科技有限公司 | Anti-loosening nut assembly |
| CN114135564A (en) * | 2021-11-29 | 2022-03-04 | 拉萨誉致信科技有限公司 | Anti-loosening nut and gasket assembly |
| CN216742392U (en) * | 2022-01-12 | 2022-06-14 | 李建明 | Anti-loose nut |
| CN114876939A (en) * | 2022-04-11 | 2022-08-09 | 陈榕 | Anti-loosening bolt fastening device |
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| Publication number | Publication date |
|---|---|
| CN116557401A (en) | 2023-08-08 |
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