CN211574056U - Bearing gland - Google Patents
Bearing gland Download PDFInfo
- Publication number
- CN211574056U CN211574056U CN201921878290.4U CN201921878290U CN211574056U CN 211574056 U CN211574056 U CN 211574056U CN 201921878290 U CN201921878290 U CN 201921878290U CN 211574056 U CN211574056 U CN 211574056U
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- Prior art keywords
- sleeve
- bearing
- ring
- connecting rod
- limiting
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- Expired - Fee Related
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- 210000004907 gland Anatomy 0.000 title claims abstract description 21
- 238000013016 damping Methods 0.000 claims abstract description 32
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The utility model provides a bearing gland, belonging to the bearing limiting technical field, comprising a pressing plate, a pressing ring and a fixing device; the edge of the pressing plate is provided with an external thread; the inner hole of the pressure ring is a threaded hole and is matched with the external thread of the pressure plate, a placing groove is formed in the pressure ring, and the damping gasket is sleeved with the pressure plate; the fixing device is used for fixing the pressure ring on the pressure plate; after the bearing is arranged at the end part of the shaft, the pressing plate is placed and fixed at the end part of the shaft; the damping gasket is placed in the placing groove of the pressing ring, the pressing ring is connected with the pressing plate through the threaded hole, and the damping gasket on the pressing ring is attached to the outer ring of the bearing, so that the bearing can be stressed uniformly when in work, and the outer ring of the bearing can be limited in axis conveniently; fixing device can press the elasticity degree that holds the bearing at the clamp plate and adjust the completion back, fixes the clamping ring on the clamp plate to at the during operation, be convenient for increase the stability of clamping ring and clamp plate, it is spacing to carry out the axial to the bearing, reduces the axial float of bearing.
Description
Technical Field
The utility model belongs to the technical field of the bearing is spacing, more specifically say, relate to a bearing gland.
Background
A high-speed wire finishing mill belongs to precision equipment, the quality and precision of each procedure need to be strictly controlled in the assembly process, and particularly, the clearance of a bearing position and a part matched with a bearing need to be precisely assembled; the damping gasket provides buffer damping for the axial position play of the bearing, the inner diameter of the buffer damping is equal to that of the bearing outer ring, and in the installation process, the damping gasket and the bearing outer ring need to be coaxially arranged and are in the same plane; in the actual installation process, because oil exists between the bearing and the damping gasket, when the damping gasket is placed on the bearing, the damping gasket can generate radial deviation; in the working process, the damping gasket is damaged after the bearing axially moves, and the bearing gap is reduced or even locked, so that the normal operation of the equipment is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bearing gland aims at solving in the installation, because there is oil between bearing and the damping gasket that causes produces the technical problem of skew with the bearing inner race.
In order to achieve the above object, the utility model adopts the following technical scheme: providing a bearing gland, which comprises a pressing plate, a pressing ring and a fixing device; the outer wall of the pressure plate is provided with external threads which are used for being detachably connected with the end part of the shaft and used for axially limiting the inner ring of the bearing; the inner hole of the pressure ring is a threaded hole and is matched with the external thread of the pressure plate, a placing groove for placing a damping gasket is formed in the pressure ring, the placing groove is used for axially limiting the damping gasket, and the damping gasket is sleeved with the pressure plate; the fixing device is used for fixing the pressure ring on the pressure plate.
As another embodiment of the application, an annular groove is formed in the compression ring, and the fixing device comprises a fixing block, a telescopic assembly and a limiting assembly; the fixed block is fixedly connected with the pressing plate, and a plurality of adjusting holes are formed in the axial direction of the pressing ring; one end of the telescopic assembly is positioned in the annular groove and is in sliding connection with the annular groove, and the other end of the telescopic assembly is used for being inserted into the adjusting hole to fix the position of the pressing ring on the pressing plate; the limiting assembly is used for limiting one end of the telescopic assembly in the annular groove.
As another embodiment of the present application, the telescopic assembly includes a sleeve, a connecting rod, and a fixing unit; one end of the opening of the sleeve faces the adjusting hole, and the other end of the opening of the sleeve is used for being connected with the annular groove; the connecting rod is connected with the sleeve in a sliding manner, and the outer side end of the connecting rod is used for being inserted into the adjusting hole; the fixing unit is used for fixing the position between the connecting rod and the sleeve.
As another embodiment of the present application, the sleeve is provided with an insertion hole, the connecting rod is provided with a plurality of limiting holes aligned with the insertion hole, and the fixing unit includes a fixing rod and an elastic member; the fixed rod penetrates through the inserting hole and is used for being inserted into the limiting hole, and the elastic piece is used for connecting the fixed rod and the sleeve.
As another embodiment of the present application, the sleeve and the connecting rod are provided with a rotation stopping member for limiting the connecting rod to rotate in the sleeve.
As another embodiment of the present application, the rotation stopping member includes a rotation stopping strip fixedly disposed on the connecting rod, and a rotation stopping groove for the rotation stopping strip to slide is formed in the inner wall of the sleeve; the rotation stopping strip is used for limiting the rotation of the connecting rod so that the limiting hole in the connecting rod is aligned with the inserting hole.
As another embodiment of the application, a sliding groove is formed in the bottom end of the annular groove, the width of the sliding groove is greater than that of the annular groove, and the limiting component comprises a sliding block and a supporting block; the sliding block is in sliding connection with the sliding groove, and the width of the sliding block is larger than that of the annular groove; one end of the supporting block is fixedly connected with the sliding block, and the other end of the supporting block extends out of the annular groove and is fixedly connected with the sleeve.
As another embodiment of this application, the both ends of sliding block all rotate and are connected with the gyro wheel, the gyro wheel with sliding connection of sliding tray.
As another embodiment of this application, the sleeve with be provided with the connecting block between the clamping ring, the one end of connecting block with the clamping ring butt, the other end be equipped with sleeve outer wall complex cambered surface.
As another embodiment of the application, the connecting block is connected with the sleeve in a sliding mode along the axial direction of the sleeve.
The utility model provides a pair of bearing gland's beneficial effect lies in: compared with the prior art, the bearing gland of the utility model limits the position of the bearing inner ring and the bearing outer ring through the matching of the pressing plate, the pressing ring and the fixing device, thereby reducing the axial movement of the bearing during working; after the bearing is installed at the end part of the shaft, the pressing plate is placed and fixed at the end part of the shaft, the inner ring of the bearing is limited axially, and the axial movement of the bearing is reduced; placing the damping gasket in the placing groove of the compression ring, so as to axially limit the damping gasket; the pressure ring is connected with the pressure plate through the threaded hole, and the damping gasket on the pressure ring is attached to the bearing outer ring, so that the condition that the damping gasket is not aligned with the bearing outer ring due to oil between the damping gasket and the bearing is reduced, the bearing is convenient to uniformly bear force on the bearing outer ring when the bearing works, and the bearing outer ring is convenient to carry out axis limiting; fixing device can press the elasticity degree that holds the bearing at the clamp plate and adjust the completion back, fixes the clamping ring on the clamp plate to at the during operation, be convenient for increase the stability of clamping ring and clamp plate, be convenient for carry on the axial spacingly to the bearing, reduce the axial float of bearing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a bearing gland provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a groove portion for placing a bearing gland according to an embodiment of the present invention;
fig. 3 is a schematic view of a sliding groove portion of a bearing gland according to an embodiment of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 3.
In the figure: 1. pressing a plate; 2. pressing a ring; 21. a placement groove; 22. an annular groove; 221. a sliding groove; 3. a fixing device; 31. a fixed block; 311. an adjustment hole; 32. a telescoping assembly; 321. a sleeve; 322. a connecting rod; 3221. a limiting hole; 3222. a rotation stopping strip; 33. a limiting component; 331. a slider; 3311. a roller; 332. a support block; 34. fixing the rod; 35. a spring; 4. and (4) connecting the blocks.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a bearing cap according to the present invention will be described. A bearing gland comprises a pressing plate 1, a pressing ring 2 and a fixing device 3; the outer wall of the pressing plate 1 is provided with external threads which are used for being detachably connected with the end part of the shaft and used for axially limiting the inner ring of the bearing; an inner hole of the compression ring 2 is a threaded hole and is matched with the external thread of the compression plate 1, a placing groove 21 for placing a damping gasket is formed in the compression ring, the placing groove 21 is used for axially limiting the damping gasket, and the damping gasket is sleeved with the compression plate 1; the fixing device 3 is used for fixing the pressure ring 2 on the pressure plate 1.
Compared with the prior art, the bearing gland provided by the utility model has the advantages that after the bearing is arranged at the end part of the shaft, the pressing plate 1 is placed and fixed at the end part of the shaft, and the inner ring of the bearing is axially limited; the damping gasket is placed in the placing groove 21 of the compression ring 2, so that the damping gasket is axially limited; the compression ring 2 is connected with the pressing plate 1 through the threaded hole, and the damping gasket on the compression ring 2 is attached to the bearing outer ring, so that the condition that the damping gasket is not aligned with the bearing outer ring due to oil between the damping gasket and the bearing is reduced, the bearing is convenient to uniformly stress the bearing outer ring when in work, and the bearing outer ring is convenient to carry out axis limiting; fixing device 3 can press at clamp plate 1 and hold the elasticity degree of bearing and adjust the completion back, fixes clamping ring 2 on clamp plate 1 to at the during operation, be convenient for increase clamping ring 2 and clamp plate 1's stability, it is spacing to be convenient for carry out the axial to the bearing, reduces the axial float of bearing.
As a specific embodiment of the present invention, please refer to fig. 1 to 4, an annular groove 22 is formed on the compression ring 2, and the fixing device 3 includes a fixing block 31, a telescopic assembly 32 and a limiting assembly 33; the fixed block 31 is fixedly connected with the pressure plate 1, and a plurality of adjusting holes 311 are formed in the axial direction of the pressure ring 2; one end of the telescopic assembly 32 is positioned in the annular groove 22 and is in sliding connection with the annular groove 22, and the other end of the telescopic assembly is used for being inserted into the adjusting hole 311 to fix the position of the pressing ring 2 on the pressing plate 1; the limiting component 33 is used for limiting one end of the telescopic component 32 in the annular groove 22; in the embodiment, the pressure plate 1 is connected with the end part of the shaft through a bolt; the placing groove 21 on the pressing ring 2 is located at one end, close to the bearing, of the pressing ring 2, the annular groove 22 on the pressing ring 2 is located at one end, far away from the bearing, of the pressing plate 1, the width of the annular groove 22 is the distance from the inner ring of the bearing to the outer ring of the bearing, and one end, provided with the annular groove 22, of the pressing ring 2 is not in contact with the balls between the inner ring and the outer ring of the bearing; after the pressing plate 1 is fixed at the end of the shaft, the pressing ring 2 is in threaded connection with the pressing plate 1, so that the pressing ring 2 is fixed on the shaft, a damping gasket on the pressing ring 2 is convenient to attach to an outer ring of a bearing, and after the tightness degree of the outer ring of the bearing pressed and held by the pressing ring 2 is adjusted, one end of the telescopic assembly 32 is inserted into the adjusting hole 311 through the telescopic of the telescopic assembly 32, so that the position between the pressing ring 2 and the pressing plate 1 is convenient to fix; spacing subassembly 33 is fixed the one end of flexible subassembly 32 in ring channel 22, and the flexible subassembly 32 of being convenient for slides along ring channel 22 to the other end of being convenient for flexible subassembly 32 aligns with regulation hole 311, and flexible subassembly 32 of being convenient for pegs graft with regulation hole 311, is convenient for fix clamping ring 2 on clamp plate 1.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the retractable assembly 32 includes a sleeve 321, a connecting rod 322 and a fixing unit; one end of the sleeve 321 is opened towards the adjusting hole 311, and the other end is used for being connected with the annular groove 22; the connecting rod 322 is connected with the sleeve 321 in a sliding manner, and the outer end of the connecting rod is used for being inserted into the adjusting hole 311; the fixing unit is used for fixing the position between the connecting rod 322 and the sleeve 321; the connecting rod 322 is connected with the sleeve 321 in a sliding manner, and one open end of the sleeve 321 faces the adjusting hole 311, so that the connecting rod 322 is conveniently inserted into the adjusting hole 311 after sliding; the fixing unit can fix the position of the connecting rod 322 after sliding on the sleeve 321, so as to maintain the state of the connecting rod 322 inserted into the adjusting hole 311, and thus facilitate the connection between the press ring 2 and the press plate 1 to be strengthened.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 4, the sleeve 321 is provided with an insertion hole, the connecting rod 322 is provided with a plurality of limiting holes 3221 for aligning with the insertion hole, and the fixing unit includes a fixing rod 34 and an elastic member; the fixing rod 34 penetrates through the inserting hole and is used for being inserted into the limiting hole 3221, and the elastic piece is used for connecting the fixing rod 34 and the sleeve 321; the elastic part comprises a spring 35, and two ends of the spring 35 are respectively fixedly connected with the outer walls of the fixing rod 34 and the sleeve 321; the sliding direction of the fixing rod 34 is perpendicular to that of the connecting rod 322; the fixing rod 34 is pulled, the fixing rod 34 is separated from the limiting hole 3221 on the connecting rod 322, after the connecting rod 322 slides in the sleeve 321 and is inserted into the adjusting hole 311, the fixing rod 34 is loosened, and the fixing rod 34 is inserted into the limiting hole 3221 on the connecting rod 322 under the action of the elastic force of the spring 35, so that the connecting rod 322 is fixed on the sleeve 321.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the sleeve 321 and the connecting rod 322 are provided with a rotation stopping component for limiting the rotation of the connecting rod 322 in the sleeve 321, the rotation stopping component can limit the rotation of the connecting rod 322 on the sleeve 321, so that the connecting rod 322 can only slide along the axis direction of the sleeve 321, thereby facilitating the alignment of the limiting hole 3221 on the connecting rod 322 and the jack hole on the sleeve 321, facilitating the sliding of the connecting rod 322, the fixing rod 34 is inserted into the limiting hole 3221 on the connecting rod 322, thereby facilitating the fixing of the position between the sleeve 321 and the fixing rod 34, and facilitating the connection between the reinforcing compression ring 2 and the pressing plate 1.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the rotation stopping member includes a rotation stopping strip 3222 fixedly disposed on the connecting rod 322, and the inner wall of the sleeve 321 is provided with a rotation stopping groove for sliding the rotation stopping strip 3222; the rotation stopping bar 3222 is used for limiting the rotation of the connecting rod 322 so that the limiting hole 3221 on the connecting rod 322 is aligned with the plugging hole; when the connecting rod 322 slides, the rotation stopping bar 3222 is connected to the rotation stopping groove, so that the rotation of the connecting rod 322 on the sleeve 321 can be limited, the limiting hole 3221 on the connecting rod 322 is aligned with the insertion hole on the sleeve 321, and the fixing rod 34 is inserted into the limiting hole 3221 after the connecting rod 322 slides on the sleeve 321.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, a sliding groove 221 is formed at the bottom end of the annular groove 22, the width of the sliding groove 221 is greater than the width of the annular groove 22, and the limiting component 33 includes a sliding block 331 and a supporting block 332; the sliding block 331 is slidably connected with the sliding groove 221, and the width of the sliding block is larger than that of the annular groove 22; one end of the supporting block 332 is fixedly connected with the sliding block 331, and the other end thereof extends out of the annular groove 22 and is fixedly connected with the sleeve 321; the section of the combination of the sliding groove 221 and the annular groove 22 is in a T shape, the sliding block 331 slides in the sliding groove 221, and the width of the sliding block 331 is greater than that of the annular groove 22, so that the sliding block 331 is limited in the sliding groove 221; the supporting block 332 extends out of the annular groove 22 and is fixedly connected with the sleeve 321, so that the sleeve 321 can slide along the annular groove 22, the connecting rod 322 can be aligned with the adjusting hole 311 conveniently, and can be inserted into the adjusting hole 311, and the connection between the pressing ring 2 and the pressing plate 1 can be enhanced conveniently.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, both ends of the sliding block 331 are rotatably connected with a roller 3311, and the roller 3311 is slidably connected with the sliding groove 221; the sliding block 331 is coupled to the sliding groove 221 via a roller 3311 to facilitate reducing friction between the sliding block 331 and the sliding groove 221 as the sliding block 331 slides within the sliding groove 221, thereby further facilitating sliding of the sliding block 331 within the sliding groove 221.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, a connection block 4 is disposed between the sleeve 321 and the compression ring 2, one end of the connection block 4 abuts against the compression ring 2, and the other end is provided with a cambered surface matched with the outer wall of the sleeve 321; connecting block 4 one end and 2 butts of clamping ring, the other end and the outer wall cooperation of sleeve 321 to be convenient for connecting block 4 supports sleeve 321.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the connecting block 4 can change the connecting position of the connecting block 4 and the sleeve 321 along the axial direction of the sleeve 321 and the sliding connection of the sleeve 321, so as to support different positions of the sleeve 321 as required.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A bearing gland, comprising:
the pressing plate (1) is detachably connected with the end part of the shaft, is used for axially limiting the inner ring of the bearing, and is provided with an external thread at the edge;
the inner hole of the pressing ring (2) is a threaded hole and is matched with the external thread of the pressing plate (1), a placing groove (21) for placing a damping gasket is formed in the pressing ring, the placing groove (21) is used for axially limiting the damping gasket, and the damping gasket is sleeved with the pressing plate (1); and
and the fixing device (3) is used for fixing the pressure ring (2) on the pressure plate (1).
2. The bearing gland according to claim 1, characterized in that an annular groove (22) is provided on the pressure ring (2), and the fixing means (3) comprises:
the fixed block (31) is fixedly connected with the pressing plate (1), and a plurality of adjusting holes (311) are formed in the axial direction of the pressing ring (2);
one end of the telescopic component (32) is positioned in the annular groove (22) and is in sliding connection with the annular groove (22), and the other end of the telescopic component is used for being inserted into the adjusting hole (311) to fix the position of the pressing ring (2) on the pressing plate (1); and
and the limiting component (33) is used for limiting one end of the telescopic component (32) in the annular groove (22).
3. A bearing gland according to claim 2, wherein the retraction assembly (32) comprises:
the sleeve (321) is opened, one end of the sleeve faces the adjusting hole (311), and the other end of the sleeve is connected with the annular groove (22);
the connecting rod (322) is connected with the sleeve (321) in a sliding mode, and the outer end of the connecting rod is used for being inserted into the adjusting hole (311); and
a fixing unit for fixing a position between the connecting rod (322) and the sleeve (321).
4. The bearing gland according to claim 3, wherein the sleeve (321) is provided with a plugging hole, the connecting rod (322) is provided with a plurality of limiting holes (3221) aligned with the plugging hole, and the fixing unit comprises:
the fixing rod (34) penetrates through the inserting hole and is used for being inserted into the limiting hole (3221); and
an elastic member for connecting the fixing rod (34) and the sleeve (321).
5. Bearing gland according to claim 4, characterized in that the sleeve (321) and the connecting rod (322) are provided with rotation stops for limiting the rotation of the connecting rod (322) in the sleeve (321).
6. The bearing pressure cover according to claim 5, wherein the rotation stopping element comprises a rotation stopping strip (3222) fixedly arranged on the connecting rod (322), and a rotation stopping groove for sliding the rotation stopping strip (3222) is formed in the inner wall of the sleeve (321); the rotation stopping bar (3222) is used for limiting the rotation of the connecting rod (322) so that a limiting hole (3221) on the connecting rod (322) is aligned with the inserting hole.
7. The bearing gland according to claim 3, wherein a sliding groove (221) is formed at the bottom end of the annular groove (22), the width of the sliding groove (221) is greater than that of the annular groove (22), and the limiting assembly (33) comprises:
the sliding block (331) is connected with the sliding groove (221) in a sliding mode, and the width of the sliding block is larger than that of the annular groove (22); and
and one end of the supporting block (332) is fixedly connected with the sliding block (331), and the other end of the supporting block extends out of the annular groove (22) and is fixedly connected with the sleeve (321).
8. The bearing cap as claimed in claim 7, wherein a roller (3311) is rotatably connected to both ends of the sliding block (331), and the roller (3311) is slidably connected to the sliding groove (221).
9. A bearing gland according to claim 3, characterized in that a connecting block (4) is arranged between the sleeve (321) and the pressure ring (2), one end of the connecting block (4) is abutted against the pressure ring (2), and the other end is provided with an arc surface matched with the outer wall of the sleeve (321).
10. Bearing gland according to claim 9, characterized in that the connecting block (4) is slidingly connected to the sleeve (321) in the direction of the axis of the sleeve (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921878290.4U CN211574056U (en) | 2019-11-01 | 2019-11-01 | Bearing gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921878290.4U CN211574056U (en) | 2019-11-01 | 2019-11-01 | Bearing gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211574056U true CN211574056U (en) | 2020-09-25 |
Family
ID=72531257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921878290.4U Expired - Fee Related CN211574056U (en) | 2019-11-01 | 2019-11-01 | Bearing gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211574056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117189775A (en) * | 2023-11-08 | 2023-12-08 | 福建省德源智能科技有限公司 | High-pressure-bearing deformation-resistant bearing |
-
2019
- 2019-11-01 CN CN201921878290.4U patent/CN211574056U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117189775A (en) * | 2023-11-08 | 2023-12-08 | 福建省德源智能科技有限公司 | High-pressure-bearing deformation-resistant bearing |
| CN117189775B (en) * | 2023-11-08 | 2024-02-27 | 福建省德源智能科技有限公司 | High-pressure-bearing deformation-resistant bearing |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |