CN212991620U - Multifunctional moisture-proof electric power cabinet - Google Patents

Multifunctional moisture-proof electric power cabinet Download PDF

Info

Publication number
CN212991620U
CN212991620U CN202022153398.6U CN202022153398U CN212991620U CN 212991620 U CN212991620 U CN 212991620U CN 202022153398 U CN202022153398 U CN 202022153398U CN 212991620 U CN212991620 U CN 212991620U
Authority
CN
China
Prior art keywords
electric power
power cabinet
cabinet main
fixedly connected
main body
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.)
Expired - Fee Related
Application number
CN202022153398.6U
Other languages
Chinese (zh)
Inventor
刘晋荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202022153398.6U priority Critical patent/CN212991620U/en
Application granted granted Critical
Publication of CN212991620U publication Critical patent/CN212991620U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The utility model relates to an electric power cabinet technical field specifically is a multi-functional dampproofing electric power cabinet, including electric power cabinet main part, air-blower and motor, the edge fixedly connected with support column of electric power cabinet main part bottom, and the quantity of support column is two sets of, the bottom of electric power cabinet main part is provided with first connecting plate, and the both ends of first connecting plate all with one side fixed connection of support column, the air-blower is installed on the top of first connecting plate, and the air outlet fixedly connected with ventilation pipe of air-blower to the ventilation pipe passes the inside that electric power cabinet main part extends to electric power cabinet main part. The utility model discloses can be so that the inside air of electric power cabinet main part be in under the state of circulation always, can not make electric power cabinet main part moist, can blow the inside dust of electric power cabinet main part simultaneously, adsorb on the surface of filter screen, can play a waterproof effect to electric power cabinet main part, further dampproofing to electric power cabinet main part.

Description

Multifunctional moisture-proof electric power cabinet
Technical Field
The utility model relates to an electric power cabinet technical field specifically is a multi-functional dampproofing electric power cabinet.
Background
Along with the rapid development of electric power technology, the use of electric power cabinet is also more and more, and electric power cabinet is a basic electric power facility, mainly used electric power distribution, and electric power cabinet is as the important facility in electric power system, and its safe operation concerns the normal operating of each relevant equipment, therefore electric power cabinet's safety problem receives high attention, and current outdoor electric power cabinet places outside for a long time and is very easily affected damp and make the air in electric power cabinet not dry, makes the condition of chemical circuit short circuit easily take place, influences electric power cabinet's use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multi-functional dampproofing electric power cabinet to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a multifunctional moisture-proof electric power cabinet comprises an electric power cabinet main body, an air blower and a motor, wherein support columns are fixedly connected to the edge of the bottom end of the electric power cabinet main body, the number of the support columns is two, a first connecting plate is arranged at the bottom end of the electric power cabinet main body, two ends of the first connecting plate are fixedly connected with one side of each support column, the top end of the first connecting plate is provided with the air blower, an air outlet of the air blower is fixedly connected with a ventilation pipe, the ventilation pipe penetrates through the electric power cabinet main body and extends into the electric power cabinet main body, air outlet holes are uniformly formed in the surface of the ventilation pipe, the motor is installed at the top end of the first connecting plate, an output shaft of the motor penetrates through the inner wall of the electric power cabinet main body and extends into the electric power cabinet main body, an output shaft of the motor is fixedly connected with a fan, the utility model discloses a rain-proof electric power cabinet, including first interior storehouse, first inserted bar, first dead slot, second dead slot, first spring, first inner chamber, first interior storehouse is inside to be provided with the filter screen, the inside on filter screen top all has seted up the inside groove, and the inside of inside groove all inserts and is equipped with first inserted bar, and the one end of first inserted bar all passes the filter screen and extends to the outside of filter screen, the first inserted bar is close to one side all fixedly connected with first spring each other, and the one end that first inserted bar was kept away from to first spring all with the inner wall fixed connection of inside groove, first dead slot has all been seted up near the inner wall of filter screen on electric power cabinet main part top, and the inside of first dead slot all is provided with the second spring to the one end of second spring and the inner wall fixed connection.
Preferably, the rainproof assembly comprises a supporting plate, one side of the supporting plate is fixedly connected with the electric power cabinet main body, supporting rods are fixedly connected to the top end of the supporting plate, a blocking cover is arranged at the top end of the electric power cabinet main body, a second inner bin is arranged at the bottom end of the supporting plate, rotating rods are arranged inside the second inner bin, the front end and the rear end of each rotating rod are fixedly connected with the inner wall of the second inner bin through embedded bearings, a clockwork spring is sleeved outside the rotating rods, one end of the clockwork spring is fixedly connected with the rotating rods, a rain cloth is fixedly connected to the other end of the clockwork spring, a bottom block is fixedly connected to the bottom end of the rain cloth, two groups of inserting plates are fixedly connected to the two sides of the supporting columns, two groups of second inserting rods are inserted into the surfaces of the inserting plates, extend to the back of the inserting plates through the bottom block, and a second connecting plate is, and the both ends of second connecting plate all with support column fixed connection, the top of second connecting plate is provided with the drawer, and the both sides of drawer all fixedly connected with second dead slot, and the inside of second dead slot is provided with the third spring to the one end of third spring and the inner wall fixed connection of second dead slot, the other end fixedly connected with second lug of third spring, the one side that the support column is close to each other all is seted up flutedly.
Preferably, the bottom end of one side of the first inserted link is inclined, and the top end of one side of the first convex block, which is far away from the second spring, is inclined.
Preferably, both sides of the bottom end of the blocking cover are fixedly connected with the top end of the supporting rod, and both sides of the blocking cover are inclined.
Preferably, the top end of the second connecting plate is provided with an embedded ball, and one end of the embedded ball is fixedly connected with the second connecting plate.
Preferably, the longitudinal section of the second bump is circular, and the longitudinal section of the groove is arc-shaped.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can make the air in the electric power cabinet main part be in the state of circulating always, can not make the electric power cabinet main part moist, can blow the dust in the electric power cabinet main part simultaneously, adsorb on the surface of filter screen, can play a waterproof effect to the electric power cabinet main part, further dampproofing to the electric power cabinet main part, conveniently take the instrument, need not take the instrument with oneself, reduced unnecessary trouble, simultaneously through the second lug, can forbid except that the staff opens the drawer;
1. by arranging the air blower, the motor and the filter screen, a user starts the air blower and the motor to enable outside air to enter the interior of the electric power cabinet main body through the air outlet hole in the ventilation pipe, the motor drives the fan to rotate to blow air in the interior of the electric power cabinet main body and discharge the air from the filter screen, the operation can enable the air in the interior of the electric power cabinet main body to be always in a circulating state, the electric power cabinet main body cannot be wet, and meanwhile, dust in the interior of the electric power cabinet main body can be blown to be adsorbed on the surface of the filter screen;
2. by arranging the blocking cover and the rain cloth, in rainy days, a user holds the bottom block to pull, so that the clockwork is tightened, the bottom block is fixed, rainwater flows down through the inclined plane of the rain cloth after being sprayed to the surface of the bottom block, and the flowing-down rainwater splashes to the surface of the bottom block, so that the operation is simple and convenient, a waterproof effect can be achieved on the electric power cabinet main body, and the electric power cabinet main body is further protected from moisture;
3. through being provided with drawer and second lug, the user pulls out the drawer, the instrument that will need is put in the inside of drawer, close the drawer, when using next time, pull to the drawer, make the third spring shrink, the second lug moves to the inside of second dead slot, make the second lug leave the inside of recess, the operation is simple and convenient, can be so that the user when maintenance electric power cabinet main part, conveniently take the instrument, need not take the instrument with oneself, it is troublesome to have reduced unnecessary, simultaneously through the second lug, can forbid except that the staff opens the drawer.
Drawings
FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;
fig. 2 is an enlarged schematic view of the structure a in fig. 1 according to the present invention;
fig. 3 is an enlarged schematic view of the structure B in fig. 1 according to the present invention;
fig. 4 is an enlarged schematic view of the structure of C in fig. 1 according to the present invention;
fig. 5 is an enlarged schematic view of the structure D in fig. 1 according to the present invention.
In the figure: 100. a power cabinet main body; 110. a support pillar; 120. a first connecting plate; 130. a blower; 131. a vent pipe; 140. a motor; 141. a fan; 150. a first inner bin; 151. filtering with a screen; 152. an inner tank; 153. a first plunger; 154. a first spring; 155. a first empty slot; 156. a second spring; 157. a first bump; 200. a rain-proof component; 210. a support plate; 220. a support bar; 230. a blocking cover; 240. a second inner bin; 250. a rotating rod; 260. a clockwork spring; 270. a rain cloth; 271. a bottom block; 280. inserting plates; 290. a second plunger; 300. a second connecting plate; 310. a drawer; 320. a second empty slot; 330. a third spring; 340. a second bump; 350. and (4) a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment:
a multifunctional moisture-proof electric power cabinet comprises an electric power cabinet main body 100, an air blower 130 and a motor 140, wherein the edges of the bottom end of the electric power cabinet main body 100 are fixedly connected with support columns 110, the number of the support columns 110 is two, the bottom end of the electric power cabinet main body 100 is provided with a first connecting plate 120, two ends of the first connecting plate 120 are fixedly connected with one side of each support column 110, the top end of the first connecting plate 120 is provided with the air blower 130, an air outlet of the air blower 130 is fixedly connected with a ventilation pipe 131, the ventilation pipe 131 penetrates through the electric power cabinet main body 100 and extends into the electric power cabinet main body 100, the surface of the ventilation pipe 131 is uniformly provided with air outlet holes, the top end of the first connecting plate 120 is provided with the motor 140, an output shaft of the motor 140 penetrates through the inner wall of the electric power cabinet main body 100 and extends into the electric power cabinet main body 100, the first inner bin 150 is communicated with the electric power cabinet main body 100, a filter screen 151 is arranged inside the first inner bin 150, inner grooves 152 are formed in two sides of the top end of the filter screen 151, first inserting rods 153 are inserted inside the inner grooves 152, one ends of the first inserting rods 153 penetrate through the filter screen 151 and extend to the outer side of the filter screen 151, first springs 154 are fixedly connected to one sides, close to each other, of the first inserting rods 153, one ends, far away from the first inserting rods 153, of the first springs 154 are fixedly connected with the inner walls of the inner grooves 152, first empty grooves 155 are formed in the inner wall, close to the filter screen 151, of the top end of the electric power cabinet main body 100, second springs 156 are arranged inside the first empty grooves 155, one ends of the second springs 156 are fixedly connected with the inner walls of the first empty grooves 155, the other ends of the second springs 156 are fixedly connected with first convex blocks 157, and rain-proof assemblies 200 are arranged on the top ends of the two;
further, the rainproof assembly 200 includes a supporting plate 210, one side of the supporting plate 210 is fixedly connected to the electric cabinet main body 100, the top end of the supporting plate 210 is fixedly connected to a supporting rod 220, the top end of the electric cabinet main body 100 is provided with a blocking cover 230, the bottom end of the supporting plate 210 is provided with a second inner chamber 240, the inner part of the second inner chamber 240 is provided with a rotating rod 250, the front end and the rear end of the rotating rod 250 are fixedly connected to the inner wall of the second inner chamber 240 through an embedded bearing, the outer side of the rotating rod 250 is sleeved with a clockwork spring 260, one end of the clockwork spring 260 is fixedly connected to the rotating rod 250, the other end of the clockwork spring 260 is fixedly connected to a rain cloth 270, the bottom end of the rain cloth 270 is fixedly connected to a bottom block 271, two sides of the two groups of supporting columns 110 are fixedly connected to two groups of inserting plates 280, two groups of second inserting rods 290 are inserted into, the bottom of the electric cabinet main body 100 is provided with a second connecting plate 300, both ends of the second connecting plate 300 are fixedly connected with the supporting column 110, the top of the second connecting plate 300 is provided with a drawer 310, and both sides of the drawer 310 are fixedly connected with second empty slots 320, and third springs 330 are disposed inside the second empty slots 320, one end of the third spring 330 is fixedly connected with the inner wall of the second empty groove 320, the other end of the third spring 330 is fixedly connected with the second bump 340, the adjacent sides of the supporting columns 110 are all provided with grooves 350, when a user needs to keep off rain for the electric power cabinet main body 100, the user holds the bottom block 271 and pulls the bottom block in a direction away from the supporting plate 210, the clockwork spring 260 is tightened, the length of the waterproof cloth 270 is lengthened until the bottom block 271 is positioned between the two groups of inserting plates 280, and the second inserting rod 290 is inserted into the middle of the bottom block 271 to rotate, so that the waterproof cloth 270 is fixed;
furthermore, the bottom end of one side of the first inserting rod 153 is inclined, the top end of one side of the first projection 157, which is far away from the second spring 156, is inclined, when a user installs the filter screen 151, the user does not need to operate, and only needs to align the filter screen 151 to the first inner bin 150, and the inclined surface of the first inserting rod 153 is abutted against the inclined surface of the first projection 157, so that the filter screen 151 is fixed;
furthermore, both sides of the bottom end of the blocking cover 230 are fixedly connected with the top end of the supporting rod 220, and both sides of the blocking cover 230 are inclined, so that when rainwater is sprayed on the blocking cover 230, the rainwater cannot be accumulated through the inclined surface of the blocking cover 230 and can flow down along the inclined surface of the blocking cover 230;
further, the top end of the second connecting plate 300 is provided with an embedded ball, and one end of the embedded ball is fixedly connected with the second connecting plate 300, so that when a user pulls the drawer 310, the smoothness of pulling is increased;
further, the longitudinal section of the second protrusion 340 is circular, the longitudinal section of the groove 350 is arc-shaped, and the second protrusion 340 is abutted against the groove 350, so that the second protrusion 340 can be fixed inside the groove 350, and meanwhile, the drawer 310 can be opened except for a worker.
The working principle is as follows: the user starts the blower 130 and the motor 140, so that the outside air enters the inside of the ventilation pipe 131, the outside air enters the inside of the power cabinet main body 100 through the air outlet hole on the ventilation pipe 131, the motor 140 drives the fan 141 to rotate, so that the air inside the power cabinet main body 100 is blown, the air inside the power cabinet main body 100 is stirred, the air inside the power cabinet main body 100 is blown to the top end of the power cabinet main body 100 and is discharged from the filter screen 151, meanwhile, dust in the air inside the power cabinet main body 100 can be adsorbed through the filter screen 151, when the user needs to replace the filter screen 151, the two sets of first insertion rods 153 are pinched and pulled in opposite directions, so that the first springs 154 are contracted, the first insertion rods 153 leave the bottom ends of the first protrusions 157, so that the filter screen 151 is taken out of the inside of the first inner bin 150 for replacement, the replaced filter screen 151 is aligned to the first inner bin 150, the first inserting rod 153 is abutted to the first bump 157, so that the second spring 156 contracts to drive the first bump 157 to enter the first empty slot 155, the first inserting rod 153 moves to the bottom end of the first bump 157, the second spring 156 rebounds under the self resilience force to drive the first bump 157 to reset, and the filter screen 151 is installed in the first inner bin 150;
if in rainy days, when a user needs to block rain for the electric power cabinet main body 100, the user holds the bottom block 271 and pulls the bottom block 271 in a direction away from the support plate 210, so that the clockwork spring 260 is tightened, the length of the rain cloth 270 is increased until the bottom block 271 is positioned between the two groups of inserting plates 280, and the second inserting rod 290 is inserted into the middle of the bottom block 271 to rotate, so that the rain cloth 270 is fixed;
when a user needs to take out a tool inside the drawer 310, the user pulls the drawer 310, so that the third spring 330 contracts and drives the second protrusion 340 to move towards the inside of the second empty slot 320, so that the second protrusion 340 leaves the inside of the groove 350, and the drawer 310 is pulled out to take out the tool inside the drawer 310.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A multi-functional dampproofing electric power cabinet, includes electric power cabinet main part (100), air-blower (130) and motor (140), its characterized in that: the edge of the bottom end of the electric power cabinet main body (100) is fixedly connected with support columns (110), the number of the support columns (110) is two, a first connecting plate (120) is arranged at the bottom end of the electric power cabinet main body (100), two ends of the first connecting plate (120) are fixedly connected with one side of each support column (110), an air blower (130) is installed at the top end of the first connecting plate (120), an air outlet of the air blower (130) is fixedly connected with a ventilation pipe (131), the ventilation pipe (131) penetrates through the electric power cabinet main body (100) and extends into the electric power cabinet main body (100), air outlet holes are uniformly formed in the surface of the ventilation pipe (131), a motor (140) is installed at the top end of the first connecting plate (120), an output shaft of the motor (140) penetrates through the inner wall of the electric power cabinet main body (100) and extends into the electric power cabinet main body (100), and a fan (141), the top end of the electric power cabinet main body (100) is provided with a first inner bin (150), the first inner bin (150) is communicated with the electric power cabinet main body (100), a filter screen (151) is arranged in the first inner bin (150), inner grooves (152) are formed in two sides of the top end of the filter screen (151), first insertion rods (153) are inserted in the inner grooves (152), one ends of the first insertion rods (153) penetrate through the filter screen (151) and extend to the outer side of the filter screen (151), one sides, close to each other, of the first insertion rods (153) are fixedly connected with first springs (154), one ends, far away from the first insertion rods (153), of the first springs (154) are fixedly connected with the inner walls of the inner grooves (152), first empty grooves (155) are formed in the inner walls, close to the filter screen (151), of the top end of the electric power cabinet main body (100), and second springs (156) are arranged in the first empty grooves (155), and one end of the second spring (156) is fixedly connected with the inner wall of the first empty groove (155), the other end of the second spring (156) is fixedly connected with the first bump (157), and the top ends of the two sides of the electric cabinet main body (100) are provided with rain-proof assemblies (200).
2. The multifunctional moisture-proof electric power cabinet as claimed in claim 1, wherein: the rainproof assembly (200) comprises a supporting plate (210), one side of the supporting plate (210) is fixedly connected with an electric power cabinet main body (100), the top end of the supporting plate (210) is fixedly connected with a supporting rod (220), the top end of the electric power cabinet main body (100) is provided with a blocking cover (230), the bottom end of the supporting plate (210) is provided with a second inner bin (240), the inside of the second inner bin (240) is provided with a rotating rod (250), the front end and the rear end of the rotating rod (250) are fixedly connected with the inner wall of the second inner bin (240) through an embedded bearing, the outer side of the rotating rod (250) is sleeved with a clockwork spring (260), one end of the clockwork spring (260) is fixedly connected with the rotating rod (250), the other end of the clockwork spring (260) is fixedly connected with a rain cloth (270), the bottom end of the rain cloth (270) is fixedly connected with a bottom block (271), the two sides of the supporting rod (110, two sets of the surface of picture peg (280) is inserted and is equipped with two sets of second inserted bar (290), second inserted bar (290) all run through bottom block (271) and extend to the back of picture peg (280), the bottom of electric power cabinet main part (100) is provided with second connecting plate (300), and the both ends of second connecting plate (300) all with support column (110) fixed connection, the top of second connecting plate (300) is provided with drawer (310), and the both sides of drawer (310) all fixedly connected with second dead slot (320), and the inside of second dead slot (320) is provided with third spring (330) to the one end of third spring (330) and the inner wall fixed connection of second dead slot (320), the other end fixedly connected with second lug (340) of third spring (330), one side that support column (110) are close to each other all sets up recess (350).
3. The multifunctional moisture-proof electric power cabinet as claimed in claim 1, wherein: the bottom end of one side of the first inserting rod (153) is inclined, and the top end of one side of the first convex block (157) far away from the second spring (156) is inclined.
4. The multifunctional moisture-proof electric power cabinet as claimed in claim 2, wherein: both sides of the bottom end of the blocking cover (230) are fixedly connected with the top end of the supporting rod (220), and both sides of the blocking cover (230) are inclined.
5. The multifunctional moisture-proof electric power cabinet as claimed in claim 2, wherein: the top end of the second connecting plate (300) is provided with an embedded ball, and one end of the embedded ball is fixedly connected with the second connecting plate (300).
6. The multifunctional moisture-proof electric power cabinet as claimed in claim 2, wherein: the longitudinal section of the second bump (340) is circular, and the longitudinal section of the groove (350) is arc-shaped.
CN202022153398.6U 2020-09-27 2020-09-27 Multifunctional moisture-proof electric power cabinet Expired - Fee Related CN212991620U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022153398.6U CN212991620U (en) 2020-09-27 2020-09-27 Multifunctional moisture-proof electric power cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022153398.6U CN212991620U (en) 2020-09-27 2020-09-27 Multifunctional moisture-proof electric power cabinet

Publications (1)

Publication Number Publication Date
CN212991620U true CN212991620U (en) 2021-04-16

Family

ID=75418728

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022153398.6U Expired - Fee Related CN212991620U (en) 2020-09-27 2020-09-27 Multifunctional moisture-proof electric power cabinet

Country Status (1)

Country Link
CN (1) CN212991620U (en)

Similar Documents

Publication Publication Date Title
CN212991620U (en) Multifunctional moisture-proof electric power cabinet
CN206498102U (en) A kind of dust-proof JP cabinets
CN207559328U (en) A kind of high-tension switch cabinet
CN216251682U (en) Dampproofing protection against insects's low-voltage switchgear
CN216016031U (en) Power distribution cabinet of high-voltage switch equipment
CN215009002U (en) Dampproofing dehumidification's outdoor power distribution cabinet
CN209160366U (en) A kind of lead-acid accumulator placement cabinet for dehumidifying dust-proof
CN208106800U (en) A kind of multi-functional charging folding spray fan
CN216413675U (en) Effectual low-voltage switchgear of antidetonation
CN218151564U (en) Novel dampproofing axial-flow fan
CN214176544U (en) Low-voltage power distribution box
CN214501566U (en) Dampproofing ventilation equipment for building engineering
CN212011823U (en) Power distribution cabinet
CN220341749U (en) Dampproofing mechanism of low-voltage distribution cabinet
CN214044406U (en) Take outdoor distribution box of dampproofing mechanism
CN218997482U (en) Breathable and dampproof fire-fighting power distribution cabinet
CN212676625U (en) Dampproofing outdoor switch board
CN220382535U (en) Low-voltage draw-out type complete switch equipment
CN216700558U (en) Electric automatization engineering is with dustproof effect's of dehumidification electrical control cabinet
CN210806425U (en) Can initiatively ventilate damp-proofing power box
CN216600364U (en) Waterproof and moistureproof outdoor communication case
CN214543898U (en) High-efficient dampproofing processing apparatus for building
CN214972957U (en) Dampproofing treatment facility of hydraulic and hydroelectric engineering equipment
CN213094659U (en) Anti-static electrical equipment box
CN215934183U (en) Low-voltage complete switch equipment for operating room

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210416