CN220021211U - Lithium battery closes core rubberizing device - Google Patents
Lithium battery closes core rubberizing device Download PDFInfo
- Publication number
- CN220021211U CN220021211U CN202321365891.1U CN202321365891U CN220021211U CN 220021211 U CN220021211 U CN 220021211U CN 202321365891 U CN202321365891 U CN 202321365891U CN 220021211 U CN220021211 U CN 220021211U
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- China
- Prior art keywords
- rubberizing
- motor
- fixedly connected
- clamping
- threaded rod
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 239000002390 adhesive tape Substances 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Manipulator (AREA)
Abstract
The utility model discloses a lithium battery core-closing rubberizing device which comprises a battery core fixing mechanism and a first clamping motor arranged on the outer side of the battery core fixing mechanism, wherein the rubberizing mechanism is arranged at the top of the battery core fixing mechanism, the rubberizing motor is arranged in the rubberizing mechanism, the battery core fixing mechanism comprises a clamping workbench, an adhesive tape winding roller is fixedly arranged on one side of the front of the top of the clamping workbench, a supporting table is fixedly arranged at the center of the top of the clamping workbench, the output end of the first clamping motor is fixedly connected with a first threaded rod, the middle part of the first threaded rod is symmetrically connected with a first threaded sleeve, and the battery core can be clamped and fixed by arranging the battery core fixing mechanism, so that the overturning function of the battery core can be realized, the rubberizing of different surfaces of the battery core can be realized, and the relative movement of two electric telescopic rods can be realized by the first clamping motor, so that the battery cores with different sizes can be clamped and fixed.
Description
Technical Field
The utility model relates to the technical field of lithium battery rubberizing equipment, in particular to a lithium battery core-closing rubberizing device.
Background
The lithium ion battery is an ideal chemical energy source, has the advantages of small volume, high voltage, high specific energy, long charge and discharge life, no memory effect, small environmental pollution, quick charge, low self-discharge rate and the like, is a preferred target of clean energy in a vehicle, has various forms, is in a common cylindrical shape and a plate shape, and can be also divided into a soft-package battery and a hard-package battery.
Publication number CN218385357U discloses a lithium battery rubberizing device, through installing the electric core in the mounting groove, and with the bottom side butt of electric core on the butt roller, when driving motor drives backup pad and mounting groove rotation, the electric core rotates and promotes the butt roller and move compression spring downwards along the guide bar, and make the butt roller support on the electric core all the time through the spring, make the sticky tape hug closely on the electric core in electric core adhesive tape in-process, avoid the sticky tape to paste on electric core lateral wall incompletely, but this patent still has following problem in the in-service use process:
this lithium cell rubberizing device rotates the electric core through installing the electric core in the mounting groove to realize the rubberizing of electric core, but the device only can carry out the rubberizing to the battery electric core of fixed size, in case the size of battery electric core changes, lead to the electric core unable to insert in the mounting groove, thereby can not rubberize the electric core, simultaneously because the size of electric core is different, lead to the width of electric core also different, when the rubberizing of battery, the phenomenon that the electric core rubberizing is not full can appear, thereby influence the integrality of electric core rubberizing.
A device for bonding and rubberizing lithium battery is provided, so as to solve the problems.
Disclosure of Invention
The utility model aims to provide a lithium battery combined core rubberizing device, which is used for solving the problems that the device provided by the background art can only rubberize battery cells with fixed sizes, once the sizes of the battery cells are changed, the battery cells cannot be inserted into a mounting groove, so that the battery cells cannot be rubberized, meanwhile, the widths of the battery cells are different due to the fact that the sizes of the battery cells are different, and the phenomenon that the rubberizing of the battery cells is not full occurs when the rubberizing of the battery cells is carried out, so that the rubberizing integrity of the battery cells is affected.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the lithium battery core-closing rubberizing device comprises a battery core fixing mechanism, and a first clamping motor, a rotating motor and a second clamping motor which are arranged on the outer side of the battery core fixing mechanism;
the top of the battery cell fixing mechanism is provided with a rubberizing mechanism, and the rubberizing mechanism is internally provided with a rubberizing motor, a translation motor and a longitudinal sliding motor;
further comprises:
the battery cell fixing mechanism comprises a clamping workbench, wherein an adhesive tape winding roller is fixedly arranged on one side of the front of the top of the clamping workbench, and a supporting table is fixedly arranged at the center of the top of the clamping workbench;
the output end of the first clamping motor is fixedly connected with a first threaded rod, and the middle part of the first threaded rod is symmetrically connected with a first thread sleeve in a threaded manner;
the top fixedly connected with electric telescopic handle of first thread bush, rotation motor fixed mounting is at electric telescopic handle's top.
Preferably, the output end of the rotating motor is fixedly connected with a first bevel gear, one side of the bottom of the first bevel gear is connected with a second bevel gear in a meshed mode, one side of the second bevel gear is fixedly connected with a rotating support shaft, one side of the rotating support shaft is fixedly connected with a clamping support, and the second clamping motor is fixedly installed on one side of the middle of the clamping support.
Preferably, the output end fixedly connected with second threaded rod of second centre gripping motor, the middle part symmetry threaded connection of second threaded rod has the second thread bush, the outside fixedly connected with centre gripping arm of second thread bush, centre gripping arm and centre gripping support sliding connection, electric telescopic handle and centre gripping workstation sliding connection.
Preferably, the rubberizing mechanism comprises a rubberizing support, a rubberizing motor is fixedly arranged at the center position of the top of the rubberizing support, a rubberizing driving gear is fixedly connected with the output end of the rubberizing motor, a transmission chain is connected with the outer side of the rubberizing driving gear in a meshed mode, rubberizing driven gears are symmetrically connected with the two sides of the inside of the transmission chain in a meshed mode, a lifting threaded rod is fixedly connected with the bottom of the rubberizing driven gears, and a lifting threaded sleeve is connected with the middle thread of the lifting threaded rod.
Preferably, a lifting support is fixedly connected between the two lifting thread sleeves, the translation motor is fixedly arranged on one side of the inside of the lifting support, the output end of the translation motor is fixedly connected with a translation threaded rod, the middle thread of the translation threaded rod is connected with a translation thread sleeve, the bottom of the translation thread sleeve is fixedly connected with a longitudinal sliding support, and the longitudinal sliding motor is fixedly arranged on one side with the longitudinal sliding support.
Preferably, the output end of the longitudinal sliding motor is fixedly connected with a longitudinal threaded rod, the middle thread of the longitudinal threaded rod is connected with a longitudinal thread sleeve, the bottom of the longitudinal thread sleeve is fixedly provided with a buffer support, buffer springs are symmetrically arranged around the inside of the buffer support, and the bottom of the buffer springs is fixedly connected with an air suction table.
Preferably, a plurality of air suction holes are formed in the bottom of the air suction table, air pumps are symmetrically arranged on two sides of the top of the buffer support, the output end of each air pump is fixedly connected with an air suction pipe, and the air suction pipes are fixedly connected with the air suction table.
Compared with the prior art, the utility model has the beneficial effects that: this lithium cell closes core rubberizing device through setting up electric core fixed establishment not only can realize the centre gripping of battery cell fixed, can realize the upset function of battery cell simultaneously, can realize the rubberizing of battery cell through setting up rubberizing mechanism, utilizes buffer spring can play certain cushioning effect when carrying out battery cell rubberizing, and its specific content is as follows:
1. through the arrangement of the battery cell fixing mechanism, the clamping and fixing of the battery cell can be realized, and meanwhile, the overturning function of the battery cell can be realized, so that rubberizing is carried out on different surfaces of the battery cell, the relative movement of the two electric telescopic rods can be realized through the first clamping motor, the battery cell with different sizes is clamped and fixed, and the practicability of the rubberizing device is improved;
2. the rubberizing of battery cell can be realized through setting up rubberizing mechanism to improve the intensity of battery cell, avoid soft packet of battery to appear the phenomenon of warping, utilize buffer spring can play certain cushioning effect when carrying out battery cell rubberizing, avoid the extrusion force that rubberizing produced great, thereby cause the damage of battery, make the air suction platform produce certain suction through air pump and breathing pipe, thereby adsorb the sticky tape, the rubberizing of electric core of being convenient for.
Drawings
FIG. 1 is a schematic view of the overall three-dimensional structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a clamping table according to the present utility model;
FIG. 3 is a schematic cross-sectional view of an electric telescopic rod according to the present utility model;
FIG. 4 is a schematic view of a three-dimensional structure of a clamping bracket according to the present utility model;
FIG. 5 is a schematic view of a sectional structure of a lifting bracket according to the present utility model;
FIG. 6 is a schematic cross-sectional view of a buffer stent according to the present utility model.
In the figure: 1. a cell fixing mechanism; 101. clamping a workbench; 102. a tape wind-up roll; 103. a support table; 104. a first clamping motor; 105. a first threaded rod; 106. a first threaded sleeve; 107. an electric telescopic rod; 108. a rotating motor; 109. a first helical gear; 110. a second helical gear; 111. rotating the supporting shaft; 112. a clamping bracket; 113. a second clamping motor; 114. a second threaded rod; 115. a second threaded sleeve; 116. a clamping arm; 2. a rubberizing mechanism; 201. a rubberizing bracket; 202. a rubberizing motor; 203. rubberizing a driving gear; 204. a drive chain; 205. a rubberizing driven gear; 206. lifting the threaded rod; 207. lifting the threaded sleeve; 208. a lifting bracket; 209. a translation motor; 210. translating the threaded rod; 211. translating the threaded sleeve; 212. a longitudinal sliding support; 213. a longitudinal sliding motor; 214. a longitudinal threaded rod; 215. a longitudinal thread sleeve; 216. a buffer bracket; 217. a buffer spring; 218. an air suction table; 219. an air suction hole; 220. an air pump; 221. an air suction pipe.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides the following technical solutions: the utility model provides a lithium cell closes core rubberizing device, including electric core fixed establishment 1, and install in the first centre gripping motor 104 in electric core fixed establishment 1 outside, rotating electrical machines 108 and second centre gripping motor 113, the top of electric core fixed establishment 1 is provided with rubberizing mechanism 2, and rubberizing mechanism 2's inside is provided with rubberizing motor 202, translation motor 209 and vertical sliding motor 213, electric core fixed establishment 1 includes centre gripping workstation 101, centre gripping workstation 101's top front side fixedly mounted has sticky tape wind-up roll 102, centre gripping workstation 101's top fixed mounting has supporting bench 103 in the top central point, wherein, the output fixedly connected with first threaded rod 105 of first centre gripping motor 104, the middle part symmetry threaded connection of first threaded rod 105 has first thread bush 106, wherein, the top fixedly connected with electric telescopic handle 107 of first threaded bush 106, rotating electrical machines 108 fixedly mounted at electric telescopic handle 107's top, the output end of the rotary motor 108 is fixedly connected with a first bevel gear 109, one side of the bottom of the first bevel gear 109 is connected with a second bevel gear 110 in a meshed manner, one side of the second bevel gear 110 is fixedly connected with a rotary supporting shaft 111, one side of the rotary supporting shaft 111 is fixedly connected with a clamping bracket 112, the second clamping motor 113 is fixedly arranged on one side of the middle part of the clamping bracket 112, the output end of the second clamping motor 113 is fixedly connected with a second threaded rod 114, the middle part of the second threaded rod 114 is symmetrically connected with a second thread sleeve 115, the outer side of the second thread sleeve 115 is fixedly connected with a clamping arm 116, the clamping arm 116 is in sliding connection with the clamping bracket 112, the electric telescopic rod 107 is in sliding connection with the clamping workbench 101, the clamping and fixing of a battery cell can be realized through the arrangement of the cell fixing mechanism 1, meanwhile, the overturning function of the battery cell can be realized, thereby carry out rubberizing to the different faces of battery cell, can realize the relative movement of two electric telescopic handle 107 through first centre gripping motor 104 to carry out the centre gripping to the battery cell of equidimension and fix, improve rubberizing device's practicality.
The rubberizing mechanism 2 comprises a rubberizing support 201, a rubberizing motor 202 is fixedly arranged at the center position of the top of the rubberizing support 201, an output end of the rubberizing motor 202 is fixedly connected with a rubberizing driving gear 203, the outer side of the rubberizing driving gear 203 is in meshed connection with a driving chain 204, two inner sides of the driving chain 204 are symmetrically in meshed connection with rubberizing driven gears 205, the bottom of the rubberizing driven gears 205 is fixedly connected with a lifting threaded rod 206, the middle thread of the lifting threaded rod 206 is connected with a lifting threaded sleeve 207, a lifting support 208 is fixedly connected between the two lifting threaded sleeves 207, a translation motor 209 is fixedly arranged at one side of the inner part of the lifting support 208, the output end of the translation motor 209 is fixedly connected with a translation threaded rod 210, the middle thread of the translation threaded rod 210 is connected with a translation threaded sleeve 211, the bottom of the translation threaded sleeve 211 is fixedly connected with a longitudinal sliding support 212, the longitudinal sliding motor 213 is fixedly arranged on one side of the longitudinal sliding bracket 212, the output end of the longitudinal sliding motor 213 is fixedly connected with a longitudinal threaded rod 214, the middle thread of the longitudinal threaded rod 214 is connected with a longitudinal thread sleeve 215, the bottom of the longitudinal thread sleeve 215 is fixedly provided with a buffer bracket 216, the periphery of the inside of the buffer bracket 216 is symmetrically provided with a buffer spring 217, the bottom of the buffer spring 217 is fixedly connected with an air suction table 218, the bottom of the air suction table 218 is provided with a plurality of air suction holes 219, the two sides of the top of the buffer bracket 216 are symmetrically provided with an air pump 220, the output end of the air pump 220 is fixedly connected with an air suction pipe 221, the air suction pipe 221 is fixedly connected with the air suction table 218, the rubberizing of a battery cell can be realized by arranging a rubberizing mechanism 2, thereby improving the strength of the battery cell, avoiding the deformation phenomenon of a soft package battery, playing a certain buffering role when the rubberizing of the battery cell is performed by utilizing the buffer spring 217, the extrusion force generated by rubberizing is avoided to be larger, thereby causing the damage of the battery.
Working principle: before the lithium battery core-closing rubberizing device is used, the whole situation of the device needs to be checked firstly to ensure that normal work can be carried out, according to the method shown in fig. 1-6, a battery core is firstly placed on a supporting table 103, a first clamping motor 104 is started to drive a first threaded rod 105 to rotate, as threads on the first threaded rod 105 are symmetrically arranged, the relative movement of two first threaded sleeves 106 can be realized, the left side and the right side of the battery core are clamped and fixed, a second clamping motor 113 is started to drive a second threaded rod 114 to rotate, a second threaded sleeve 115 is started to drive a clamping arm 116 to clamp and fix the front side and the rear side of the battery core, a rubberizing driving gear 203 and a transmission chain 204 are started to drive a rubberizing driving gear 204 to rotate, the meshing effect between the drive chain 204 and the rubberizing driven gear 205 is utilized, thereby realizing the rotation of the lifting threaded rod 206, enabling the lifting threaded sleeve 207 to drive the lifting bracket 208 to move up and down, enabling the air suction table 218 to move to the top of the adhesive tape winding roller 102, starting the air pump 220 to adsorb the adhesive tape on the surface of the air suction table 218, enabling the air suction table 218 to move to the surface of the battery cell by utilizing the translation motor 209 and the longitudinal sliding motor 213, thereby rubberizing the battery cell, and finally, driving the first bevel gear 109 to rotate by starting the rotation motor 108, and realizing the rotation function of the clamping bracket 112 by utilizing the bevel gear meshing effect between the first bevel gear 109 and the second bevel gear 110, thereby rubberizing different surfaces of the battery cell.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. The lithium battery core-closing rubberizing device comprises a battery core fixing mechanism (1), and a first clamping motor (104), a rotating motor (108) and a second clamping motor (113) which are arranged on the outer side of the battery core fixing mechanism (1);
the top of the battery cell fixing mechanism (1) is provided with a rubberizing mechanism (2), and the rubberizing mechanism (2) is internally provided with a rubberizing motor (202), a translation motor (209) and a longitudinal sliding motor (213);
characterized by further comprising:
the battery cell fixing mechanism (1) comprises a clamping workbench (101), an adhesive tape winding roller (102) is fixedly arranged on one side of the front surface of the top of the clamping workbench (101), and a supporting table (103) is fixedly arranged at the center of the top of the clamping workbench (101);
the output end of the first clamping motor (104) is fixedly connected with a first threaded rod (105), and the middle part of the first threaded rod (105) is symmetrically connected with a first thread sleeve (106) in a threaded manner;
the top of the first thread bush (106) is fixedly connected with an electric telescopic rod (107), and the rotating motor (108) is fixedly arranged at the top of the electric telescopic rod (107).
2. The lithium battery cell pack rubberizing device of claim 1, wherein: the output end of the rotating motor (108) is fixedly connected with a first bevel gear (109), one side of the bottom of the first bevel gear (109) is connected with a second bevel gear (110) in a meshed mode, one side of the second bevel gear (110) is fixedly connected with a rotating support shaft (111), one side of the rotating support shaft (111) is fixedly connected with a clamping bracket (112), and the second clamping motor (113) is fixedly arranged on one side of the middle of the clamping bracket (112).
3. The lithium battery cell paste coating device according to claim 2, wherein: the output end of the second clamping motor (113) is fixedly connected with a second threaded rod (114), a second thread sleeve (115) is symmetrically and in the middle of the second threaded rod (114), a clamping arm (116) is fixedly connected to the outer side of the second thread sleeve (115), the clamping arm (116) is in sliding connection with the clamping support (112), and the electric telescopic rod (107) is in sliding connection with the clamping workbench (101).
4. The lithium battery cell pack rubberizing device of claim 1, wherein: rubberizing mechanism (2) are including rubberizing support (201), rubberizing motor (202) fixed mounting is in the top central point of rubberizing support (201), the output fixedly connected with rubberizing driving gear (203) of rubberizing motor (202), the outside meshing of rubberizing driving gear (203) is connected with drive chain (204), the inside bilateral symmetry meshing of drive chain (204) is connected with rubberizing driven gear (205), the bottom fixedly connected with lift threaded rod (206) of rubberizing driven gear (205), the middle part threaded connection of lift threaded rod (206) has lift thread bush (207).
5. The lithium battery cell pack rubberizing device of claim 4, wherein: two fixedly connected with lifting support (208) between lifting thread cover (207), translation motor (209) fixed mounting is in inside one side of lifting support (208), the output fixedly connected with translation threaded rod (210) of translation motor (209), the middle part threaded connection of translation threaded rod (210) has translation thread cover (211), the bottom fixedly connected with longitudinal sliding support (212) of translation thread cover (211), longitudinal sliding motor (213) fixed mounting is in one side that has longitudinal sliding support (212).
6. The lithium battery cell pack rubberizing device of claim 5, wherein: the output end of the longitudinal sliding motor (213) is fixedly connected with a longitudinal threaded rod (214), the middle of the longitudinal threaded rod (214) is in threaded connection with a longitudinal threaded sleeve (215), a buffer support (216) is fixedly arranged at the bottom of the longitudinal threaded sleeve (215), buffer springs (217) are symmetrically arranged around the inside of the buffer support (216), and an air suction table (218) is fixedly connected to the bottom of the buffer springs (217).
7. The lithium battery cell pack rubberizing device of claim 6, wherein: the bottom of air suction table (218) has seted up a plurality of air suction holes (219), air pump (220) are installed to the top bilateral symmetry of buffering support (216), the output fixedly connected with breathing pipe (221) of air pump (220), breathing pipe (221) and air suction table (218) fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321365891.1U CN220021211U (en) | 2023-05-31 | 2023-05-31 | Lithium battery closes core rubberizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321365891.1U CN220021211U (en) | 2023-05-31 | 2023-05-31 | Lithium battery closes core rubberizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220021211U true CN220021211U (en) | 2023-11-14 |
Family
ID=88685276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321365891.1U Active CN220021211U (en) | 2023-05-31 | 2023-05-31 | Lithium battery closes core rubberizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220021211U (en) |
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2023
- 2023-05-31 CN CN202321365891.1U patent/CN220021211U/en active Active
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