CN112377521A - Wear-resistant bearing - Google Patents
Wear-resistant bearing Download PDFInfo
- Publication number
- CN112377521A CN112377521A CN202011276503.3A CN202011276503A CN112377521A CN 112377521 A CN112377521 A CN 112377521A CN 202011276503 A CN202011276503 A CN 202011276503A CN 112377521 A CN112377521 A CN 112377521A
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- CN
- China
- Prior art keywords
- balls
- ring
- wear
- resistant bearing
- outer lane
- 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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Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
Abstract
The invention relates to the technical field of bearings, in particular to a wear-resistant bearing which comprises a first inner ring, wherein a plurality of first balls are annularly arranged on the first inner ring at equal intervals, a first middle ring is jointly arranged on the outer sides of the first balls, a plurality of second balls are annularly arranged on one side far away from the first balls at equal intervals, a first outer ring is jointly arranged on the outer sides of the second balls, the inner part of the first middle ring is of a cavity structure, an oil absorption layer is arranged in the cavity of the first middle ring, a pair of threaded holes are formed in the opposite side of the first middle ring, bolts are connected to the inner threads of the threaded holes, and a first clamping groove is formed in the opposite end of each bolt. Compared with the prior art, the wear-resistant bearing has the advantages of reasonable structural design, ingenious structure, novel design and strong practicability, has stronger functionality compared with the traditional wear-resistant bearing, has good market competitiveness and is worthy of popularization.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a wear-resistant bearing.
Background
The bearing is an important part in the modern mechanical equipment, the main function of the bearing is to support the mechanical rotating body, reduce the friction coefficient in the motion process and ensure the rotation precision of the mechanical rotating body, the bearing generally comprises an inner ring, an outer ring, a rolling body and a retainer, and the inner ring is usually tightly matched with a shaft and rotates together with the shaft; the outer ring is usually matched with a bearing seat hole or a mechanical part shell to play a supporting role; the rolling bodies are uniformly arranged between the inner ring and the outer ring by virtue of the retainer; the rolling bodies are uniformly spaced by the retainer and are guided to move on a correct track; however, the conventional bearing cannot be connected in a plurality of ways, the distance between the balls cannot be well adjusted, the balls are easily attached to one piece, the inner ring and the outer ring are easily worn, and the wear of the multi-bearing is increased, so that the wear-resistant bearing is provided, and the service efficiency of the bearing is improved.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a wear-resistant bearing, which can increase the use of the bearing and reduce the wear degree of the bearing to the minimum.
In order to achieve the purpose, the invention adopts the following technical scheme:
designing a wear-resistant bearing, which comprises a first inner ring, wherein a plurality of first balls are annularly arranged at equal intervals on the first inner ring, a first middle ring is jointly arranged at the outer sides of the first balls, a plurality of second balls are annularly arranged at equal intervals on one side far away from the first balls, a first outer ring is jointly arranged at the outer sides of the second balls, the inner part of the first middle ring is of a cavity structure, an oil absorption layer is arranged in the cavity of the first middle ring, a pair of threaded holes are formed in the just opposite side of the first middle ring, a bolt is in threaded connection with the inner part of each threaded hole, a first clamping groove is formed in the just opposite end of the bolt, a cross-shaped first clamping groove is formed in the first clamping groove, a sealing ring is jointly arranged between the outer side of the bolt and the inner side of each threaded hole, a second outer ring is arranged on one side of the first outer ring, and the inner side structure of the second outer ring is identical to the, the opposite side of first outer lane is provided with the third outer lane, the inboard structure of third outer lane all is the same with the inboard structure of first outer lane, the outside of second outer lane and the one end of the inside second inner circle of third outer lane respectively are provided with the push rod, the outer wall equidistance annular of first outer lane is provided with a plurality of and push rod assorted through-holes.
Preferably, a pair of grooves are formed in the inner portion of the first outer ring and in the two sides of the through hole, a telescopic rod is arranged in the groove, a clamping block is fixedly connected to the other end of the telescopic rod, a second spring is connected between the outer side of the clamping block and the inner portion of the groove, the second spring surrounds the outer side of the telescopic rod, and two pairs of second clamping grooves are formed in the inner portion of the first outer ring and in the two sides of the through hole.
Preferably, two pairs of third springs are arranged on the outer wall of the push rod from top to bottom, a clamping plate matched with the second clamping groove is fixedly connected to the other end of each third spring, the other end of each clamping plate is hinged to the push rod, and a pair of third clamping grooves are formed in the outer wall of the push rod.
Preferably, the third clamping grooves are all arc-shaped third clamping grooves, and the second clamping grooves are all triangular second clamping grooves.
Preferably, a plurality of first springs are annularly arranged on the inner wall of the first inner ring at equal intervals, the other ends of the first springs are fixedly connected with extrusion plates, and the extrusion plates are all arc-shaped extrusion plates.
Preferably, equal sliding connection has the push pedal between the first ball and between the second ball, the opposite side fixedly connected with bracing piece of push pedal, the outer wall fixedly connected with symmetrical connecting rod of bracing piece, the other end swing joint of connecting rod has the third ball, the outside of third ball all with the outer wall looks structure of first inner circle and first centre circle and first outer lane.
Preferably, the connecting rods are all arc-shaped connecting rods, and the supporting rods are all arc-shaped supporting rods.
The wear-resistant bearing provided by the invention has the beneficial effects that: firstly, rotating the bolt, taking out the bolt, simultaneously taking out the bolt, driving the sealing ring to take out the threaded hole, adding a lubricant into the oil absorption layer, screwing the bolt, placing the push rod into the through hole, simultaneously placing the push rod into the through hole, clamping the fixture block into the third clamping groove through the second spring and the telescopic rod, fixing the bearing, and connecting the plurality of bearings together; simultaneously in the in-process of placing to the extrusion third spring makes in the cardboard card goes into the second draw-in groove and fixes a plurality of bearings.
Compared with the prior art, the wear-resistant bearing has the advantages of reasonable structural design, ingenious structure, novel design and strong practicability, has stronger functionality compared with the traditional wear-resistant bearing, has good market competitiveness and is worthy of popularization.
Drawings
Fig. 1 is a schematic front view of a structure of a wear-resistant bearing according to the present invention;
fig. 2 is a schematic perspective view illustrating a structure of a wear-resistant bearing according to the present invention;
fig. 3 is a schematic cross-sectional view illustrating the structure of a wear-resistant bearing according to the present invention;
fig. 4 is a schematic view of a structure of a wear-resistant bearing according to the present invention;
fig. 5 is a partial structural view of a structure of a wear-resistant bearing according to the present invention;
FIG. 6 is a schematic cross-sectional view of a portion of the structure of a wear-resistant bearing in accordance with the present invention;
FIG. 7 is a schematic cross-sectional view of a portion of the structure of a wear-resistant bearing in accordance with the present invention;
FIG. 8 is an enlarged view of the portion A of the wear-resistant bearing according to the present invention;
fig. 9 is an enlarged schematic view of a B-portion structure of a wear-resistant bearing according to the present invention.
In the figure: the oil suction type oil suction device comprises a first inner ring 1, a first ball 2, a first middle ring 3, a second ball 4, a first outer ring 5, a second outer ring 6, a third outer ring 7, an oil suction layer 8, a bolt 9, a sealing ring 10, a threaded hole 11, a connecting rod 12, a third ball 13, a supporting rod 14, a push plate 15, a first clamping groove 16, a first spring 17, a through hole 18, an extrusion plate 19, a second clamping groove 20, a groove 21, a second spring 22, an expansion rod 23, a clamping block 24, a push rod 25, a third clamping groove 26, a clamping plate 27 and a third spring 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-9, a wear-resistant bearing comprises a first inner ring 1, a plurality of first balls 2 are annularly arranged on the first inner ring 1 at equal intervals, a first middle ring 3 is arranged on the outer sides of the first balls 2, a plurality of second balls 4 are annularly arranged on one side far away from the first balls 2 at equal intervals, a first outer ring 5 is arranged on the outer sides of the second balls 4, the inner portion of the first middle ring 3 is of a cavity structure, an oil absorption layer 8 is arranged in the cavity of the first middle ring 3, a pair of threaded holes 11 are arranged on one side of the first middle ring 3, a bolt 9 is in threaded connection with the inner portion of each threaded hole 11, a first clamping groove 16 is arranged at one end, opposite to the bolt 9, a cross-shaped first clamping groove 16 is arranged on the first clamping groove 16, a sealing ring 10 is arranged on the outer side of the bolt 9 and between the inner sides of the threaded holes 11, a second outer ring 6 is, the inner side structure of the second outer ring 6 is the same as that of the first outer ring 5, the other side of the first outer ring 5 is provided with a third outer ring 7, the inner side structure of the third outer ring 7 is the same as that of the first outer ring 5, the outer side of the second outer ring 6 and one end of the second inner ring inside the third outer ring 7 are respectively provided with a push rod 25, and a plurality of through holes 18 matched with the push rod 25 are annularly arranged on the outer wall of the first outer ring 5 at equal intervals.
A pair of recess 21 has all been seted up to the inside of first outer lane 5 and the both sides that are located through-hole 18, the inside of recess 21 is equipped with telescopic link 23, telescopic link 23's other end fixedly connected with fixture block 24, be connected with second spring 22 between fixture block 24's the outside and recess 21's the inside jointly, second spring 22 all encircles in the outside of telescopic link 23, two pairs of second draw-in grooves 20 have all been seted up to the inside of first outer lane 5 and the both sides that are located through-hole 18, place through push rod 25 in through-hole 18, extrude telescopic link 23 and second spring 22, make the fixture block 24 card of the fixed even of telescopic link 23 one end go into in third draw-in groove 26, make a plurality of bearing fixed connection together.
The outer wall of push rod 25 is provided with two pairs of third springs 28 to the top down, the other end fixedly connected with of third spring 28 and second draw-in groove 20 assorted cardboard 27, the other end of cardboard 27 is articulated mutually with push rod 25, a pair of third draw-in groove 26 has been seted up to the outer wall of push rod 25, push rod 25 pushes into through-hole 18, and extrude spring 28, make in push rod 25 card goes into second draw-in groove 20, make a plurality of bearing fixed connection together, third draw-in groove 26 is circular arc type third draw-in groove 26, second draw-in groove 20 is triangle-shaped second draw-in groove 20, the joint of can being convenient for.
A plurality of first springs 17 are annularly arranged on the inner wall of the first inner ring 1 at equal intervals, the other ends of the first springs 17 are fixedly connected with extrusion plates 19, and the extrusion plates 19 are all arc extrusion plates 19.
Equal sliding connection has push pedal 15 between 2 first balls and between 4 second balls, the opposite side fixedly connected with bracing piece 14 of push pedal 15, the connecting rod 12 of the outer wall fixedly connected with symmetry of bracing piece 14, the other end swing joint of connecting rod 12 has third ball 13, the outside of third ball 13 all with first inner circle 1 and first well circle 3 and the outer wall looks structure of first outer lane 5, a plurality of balls of being convenient for are connected, connecting rod 12 is circular arc type connecting rod 12, bracing piece 14 is circular arc type bracing piece 14, and in using.
The working principle is as follows: when the oil absorption device is used, the bolt 9 is rotated, the bolt 9 is taken out, the sealing ring 10 is driven to take out the threaded hole 11 while the bolt 9 is taken out, a lubricating agent is added into the oil absorption layer 8, the bolt 9 is screwed, the push rod 25 is placed into the through hole 18, and the push rod 25 is placed into the through hole 18, so that the clamping block 24 is clamped into the third clamping groove 26 through the second spring 22 and the telescopic rod 23, the bearing is fixed, and a plurality of bearings are connected together; while during placement and compressing the third spring 28 so that the catch plate 27 snaps into the second catch slot 20 and secures the plurality of bearings.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A wear-resistant bearing comprises a first inner ring (1), and is characterized in that a plurality of first balls (2) are annularly arranged at equal intervals on the first inner ring (1), a first middle ring (3) is jointly arranged at the outer sides of the first balls (2), a plurality of second balls (4) are annularly arranged at equal intervals on one side far away from the first balls (2), a first outer ring (5) is jointly arranged at the outer sides of the second balls (4), the inner part of the first middle ring (3) is of a cavity structure, an oil absorption layer (8) is arranged in a cavity of the first middle ring (3), a pair of threaded holes (11) are formed in one side, opposite to the first middle ring (3), a bolt (9) is connected to the inner threads of the threaded holes (11), a first clamping groove (16) is formed in one end, opposite to the bolt (9), and a cross-shaped first clamping groove (16) is formed in the first clamping groove (16), the utility model discloses a bolt, including bolt (9), the inboard of screw hole (11) of just being located is provided with sealing washer (10) jointly in the outside of bolt (9), one side of first outer lane (5) is provided with second outer lane (6), the inboard structure of second outer lane (6) all is the same with the inboard structure of first outer lane (5), and the opposite side of first outer lane (5) is provided with third outer lane (7), the inboard structure of third outer lane (7) all is the same with the inboard structure of first outer lane (5), the outside of second outer lane (6) and the one end of the inside second inner circle of third outer lane (7) respectively are provided with push rod (25), the outer wall equidistance annular of first outer lane (5) is provided with a plurality ofly and push rod (25) assorted through-hole (18).
2. The wear-resistant bearing is characterized in that a pair of grooves (21) are formed in the first outer ring (5) and located on two sides of the through hole (18), a telescopic rod (23) is arranged in each groove (21), a clamping block (24) is fixedly connected to the other end of each telescopic rod (23), a second spring (22) is connected between the outer side of each clamping block (24) and the inner side of each groove (21), the second springs (22) are all wound on the outer side of each telescopic rod (23), and two pairs of second clamping grooves (20) are formed in the first outer ring (5) and located on two sides of the through hole (18).
3. The wear-resistant bearing is characterized in that two pairs of third springs (28) are arranged on the outer wall of the push rod (25) from top to bottom, a clamping plate (27) matched with the second clamping groove (20) is fixedly connected to the other end of each third spring (28), the other end of each clamping plate (27) is hinged to the push rod (25), and a pair of third clamping grooves (26) are formed in the outer wall of the push rod (25).
4. A wear-resistant bearing according to claim 1, wherein the third locking grooves (26) are circular arc-shaped third locking grooves (26), and the second locking grooves (20) are triangular second locking grooves (20).
5. A wear-resistant bearing according to claim 1, wherein the inner wall of the first inner ring (1) is annularly provided with a plurality of first springs (17) at equal intervals, the other ends of the first springs (17) are fixedly connected with extrusion plates (19), and the extrusion plates (19) are all circular-arc extrusion plates (19).
6. The wear-resistant bearing is characterized in that push plates (15) are slidably connected between the first balls (2) and between the second balls (4), support rods (14) are fixedly connected to the other sides of the push plates (15), symmetrical connecting rods (12) are fixedly connected to the outer walls of the support rods (14), third balls (13) are movably connected to the other ends of the connecting rods (12), and the outer sides of the third balls (13) are respectively in structure with the outer walls of the first inner ring (1), the first middle ring (3) and the first outer ring (5).
7. A wear-resistant bearing in accordance with claim 1, characterized in that the connecting rods (12) are all circular arc connecting rods (12) and the supporting rods (14) are all circular arc supporting rods (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011276503.3A CN112377521A (en) | 2020-11-16 | 2020-11-16 | Wear-resistant bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011276503.3A CN112377521A (en) | 2020-11-16 | 2020-11-16 | Wear-resistant bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112377521A true CN112377521A (en) | 2021-02-19 |
Family
ID=74584174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011276503.3A Pending CN112377521A (en) | 2020-11-16 | 2020-11-16 | Wear-resistant bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112377521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046315A (en) * | 2021-11-26 | 2022-02-15 | 中国航发哈尔滨轴承有限公司 | Bearing of flexible raceway |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130129504A1 (en) * | 2011-11-18 | 2013-05-23 | Rolls-Royce Deutschland Ltd & Co Kg | Bearing device and turbomachine having a bearing device |
| CN205744897U (en) * | 2016-05-17 | 2016-11-30 | 南安市品龙新材料科技有限公司 | A kind of double-deck roller body bearing |
| CN206608469U (en) * | 2017-01-22 | 2017-11-03 | 中山市睿佳五金制品有限公司 | A kind of powder metallurgy high-hardness wear-resistant bearing |
| CN107975531A (en) * | 2017-11-23 | 2018-05-01 | 方晓超 | A kind of combined bearing |
| CN207526983U (en) * | 2017-11-22 | 2018-06-22 | 深圳市鹏达诚科技股份有限公司 | A kind of precision speed reduction device of robot |
| CN207960831U (en) * | 2018-01-16 | 2018-10-12 | 天津市华荣气动液压成套设备有限公司 | Axially position type sliding-vane motor |
| CN208024714U (en) * | 2018-03-30 | 2018-10-30 | 杭州沈氏轴承有限公司 | A kind of combined type taper roll bearing |
| CN108799328A (en) * | 2018-06-20 | 2018-11-13 | 安徽恒泰机械股份有限公司 | A kind of combined retainer for new-energy automobile |
| CN210371696U (en) * | 2019-08-20 | 2020-04-21 | 杭州爱伦斯机械有限公司 | Damping type thrust ball wheel hub bearing based on wheel hub unit |
-
2020
- 2020-11-16 CN CN202011276503.3A patent/CN112377521A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130129504A1 (en) * | 2011-11-18 | 2013-05-23 | Rolls-Royce Deutschland Ltd & Co Kg | Bearing device and turbomachine having a bearing device |
| CN205744897U (en) * | 2016-05-17 | 2016-11-30 | 南安市品龙新材料科技有限公司 | A kind of double-deck roller body bearing |
| CN206608469U (en) * | 2017-01-22 | 2017-11-03 | 中山市睿佳五金制品有限公司 | A kind of powder metallurgy high-hardness wear-resistant bearing |
| CN207526983U (en) * | 2017-11-22 | 2018-06-22 | 深圳市鹏达诚科技股份有限公司 | A kind of precision speed reduction device of robot |
| CN107975531A (en) * | 2017-11-23 | 2018-05-01 | 方晓超 | A kind of combined bearing |
| CN207960831U (en) * | 2018-01-16 | 2018-10-12 | 天津市华荣气动液压成套设备有限公司 | Axially position type sliding-vane motor |
| CN208024714U (en) * | 2018-03-30 | 2018-10-30 | 杭州沈氏轴承有限公司 | A kind of combined type taper roll bearing |
| CN108799328A (en) * | 2018-06-20 | 2018-11-13 | 安徽恒泰机械股份有限公司 | A kind of combined retainer for new-energy automobile |
| CN210371696U (en) * | 2019-08-20 | 2020-04-21 | 杭州爱伦斯机械有限公司 | Damping type thrust ball wheel hub bearing based on wheel hub unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046315A (en) * | 2021-11-26 | 2022-02-15 | 中国航发哈尔滨轴承有限公司 | Bearing of flexible raceway |
| CN114046315B (en) * | 2021-11-26 | 2024-01-23 | 中国航发哈尔滨轴承有限公司 | Bearing with deformable roller path |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210219 |
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| RJ01 | Rejection of invention patent application after publication |