CN219162645U - Air-cooled reinforcement machine case - Google Patents
Air-cooled reinforcement machine case Download PDFInfo
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- CN219162645U CN219162645U CN202320282268.3U CN202320282268U CN219162645U CN 219162645 U CN219162645 U CN 219162645U CN 202320282268 U CN202320282268 U CN 202320282268U CN 219162645 U CN219162645 U CN 219162645U
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- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The utility model provides an air-cooled reinforced chassis, which is characterized in that connectors and fan components are arranged on different panels of the chassis, an internal air channel is arranged on a top panel and a bottom panel of the chassis, the internal air channel is led to the fan components, air inlets of the internal air channel are arranged at the end face of the top panel and the end face of the bottom panel, air enters the internal air channel from the air inlets, and after heat exchange is carried out in the chassis, the air is discharged from the fan components, so that the heat dissipation requirement of the chassis is completed; and the connector and the fan component are arranged on different panels of the chassis, so that the size of the chassis is reduced, and the space occupation volume of the chassis is reduced.
Description
[ field of technology ]
The utility model relates to the field of chassis design, in particular to an air-cooled reinforced chassis.
[ background Art ]
At present, most air-cooled reinforced cabinets in the market are provided with connectors and fan components on a rear panel of the cabinet, and at the moment, the air flow direction of an internal air channel of the cabinet is perpendicular to the plane of the rear panel and is parallel to the inserting and extracting direction of the board card and the inserting and extracting direction of the connectors; the direction of air flow through the machine case is that the air flows into the machine case from the air inlet of the front panel, and the air flows out of the machine case from the fan component at the rear part of the machine case, and the arrangement mode requires that the lower connector and the fan are simultaneously arranged on the rear panel of the machine case, so that the whole size of the machine case is overlarge, and in some cabins or machine cases with small spaces, the machine case scheme cannot meet the requirements due to overlarge size.
[ utility model ]
The utility model aims to solve the technical problem of reducing the size of the chassis on the premise of meeting the heat dissipation requirement of the chassis.
In order to solve the problems, the utility model adopts the following technical scheme:
in a first aspect, an air-cooled reinforced chassis includes: two cold plate assemblies 1, a front panel 2, a rear panel 3, a first side plate 4, a second side plate 5, a fan component 6 and a connector 31, wherein:
the two cold plate assemblies 1, the front panel 2, the rear panel 3, the first side plate 4 and the second side plate 5 are connected in a preset mode to form a chassis with an internal cavity, and the internal cavity of the chassis is used for inserting a module;
the connector 31 is provided on the inner surface of the rear panel 3;
the fan component 6 is arranged on the outer surface of the second side plate 5;
two cold plate assemblies 1 are all provided with air intake 7 towards first curb plate 4 one end, air intake 7 with the inside one end butt joint of inside wind channel 8 of cold plate assembly 1, inside wind channel 8 other end is led to fan part 6, the air is followed air intake 7 gets into and passes through inside wind channel 8, the air carries out the heat exchange to the inside module of quick-witted case when inside wind channel 8, the air after carrying out the heat exchange is followed fan part 6 discharges.
Preferably, the two cold plate assemblies 1 are respectively disposed at the top and bottom of the chassis, the front panel 2, the rear panel 3, the first side plate 4 and the second side plate 5 are disposed at the peripheral side of the chassis, the front panel 2 and the rear panel 3 are disposed opposite and parallel to each other, and the first side plate 4 and the second side plate 5 are disposed opposite and parallel to each other.
Preferably, the cold plate assembly 1 further comprises: mounting plate 11, corrugated plate 12 and wrapper 13, wherein:
the cold plate assembly 1 is formed by sequentially overlapping and welding the mounting plate 11, the corrugated plate 12 and the wrapping plate 13, wherein the mounting plate 11 is positioned at the inner layer of the case, and the wrapping plate 13 is positioned at the outer layer of the case.
Preferably, ventilation grooves 121 are formed in both sides of the corrugated plate 12, the extension direction of the ventilation grooves 121 is perpendicular to the plane where the first side plate 4 is located and the plane where the second side plate 5 is located, and the ventilation grooves 121 on the corrugated plate 12 are abutted with the mounting plate 11 and the wrapping plate 13 to obtain the internal air duct 8.
Preferably, a clamping groove 111 is formed in one surface of the mounting plate 11 facing the interior of the case, and the extending direction of the clamping groove 111 is perpendicular to the plane of the front panel 2 and the plane of the rear panel 3;
the top clamping groove 111 and the bottom clamping groove 111 in the same vertical direction are corresponding to a module groove 112 for inserting a module.
Preferably, a mounting groove 113 is provided on a surface of the mounting plate 11 facing the corrugated plate 12, and the mounting groove 113 is used for providing the corrugated plate 12.
Preferably, one end of the mounting groove 113 extends to the end face of the mounting plate 11, so that the end face of one end of the corrugated plate 12 is exposed, and the air inlet 7 is obtained.
Preferably, a transition air port 114 is disposed at the other end of the mounting groove 113, the transition air port 114 is abutted with the other end of the corrugated plate 12, and the transition air port 114 is used for outputting air of the internal air duct 8 from the cold plate assembly 1.
Preferably, the second side plate 5 is hollow and box-shaped, the upper and lower ends of the second side plate 5 are respectively abutted against the two mounting plates 11, the upper and lower ends of the second side plate 5 are respectively provided with a first ventilation opening 51, and the first ventilation opening 51 is abutted against a transition air opening 114 on the mounting plate 11 and is used for receiving air from the air channels 8 in the upper and lower ends;
a second air vent 52 is provided on a side of the second side plate 5 facing the fan unit 6, and the second air vent 52 is configured to output air received by the second side plate 5 to the fan unit 6 and exhaust the air from the fan unit 6.
Preferably, the fan unit 6 specifically includes: fan and ventilation hood housing, wherein:
the fan is connected with the inside of the ventilation hood shell, and the ventilation hood shell is fixed on the outer surface of the second side plate 5.
The utility model provides an air-cooled reinforced chassis, which is characterized in that connectors and fan components are arranged on different panels of the chassis, an internal air channel is arranged on a top panel and a bottom panel of the chassis, the internal air channel is led to the fan components, air inlets of the internal air channel are arranged at the end face of the top panel and the end face of the bottom panel, air enters the internal air channel from the air inlets, and after heat exchange is carried out in the chassis, the air is discharged from the fan components, so that the heat dissipation requirement of the chassis is completed; and the connector and the fan component are arranged on different panels of the chassis, so that the size of the chassis is reduced, and the space occupation volume of the chassis is reduced.
[ description of the drawings ]
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments of the present utility model will be briefly described below. It is evident that the drawings described below are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is an exploded view of an air-cooled reinforced chassis provided by an embodiment of the present utility model;
fig. 2 is a side view of a first side plate direction of an air-cooled reinforced chassis according to an embodiment of the present utility model;
fig. 3 is a front cross-sectional view of an air-cooled reinforced chassis according to an embodiment of the present disclosure;
fig. 4 is a front cross-sectional view of an air-cooled reinforced chassis with air flow direction according to an embodiment of the present utility model;
FIG. 5 is an exploded view of another air-cooled reinforced chassis provided by an embodiment of the present utility model;
FIG. 6a is an exploded view of a cold plate assembly of an air-cooled reinforced chassis according to an embodiment of the present utility model;
FIG. 6b is an exploded view of a cold plate assembly of another air-cooled reinforced chassis provided by an embodiment of the present utility model;
FIG. 7 is a side view of a first side panel of another air-cooled reinforced chassis according to an embodiment of the present disclosure;
FIG. 8 is a front cross-sectional view of another air-cooled reinforced chassis provided by an embodiment of the present utility model;
FIG. 9 is an exploded view of a cold plate assembly of another air-cooled reinforced chassis provided by an embodiment of the present utility model;
FIG. 10 is an exploded view of yet another air-cooled reinforced chassis provided by an embodiment of the present utility model;
FIG. 11 is a front cross-sectional view of yet another air-cooled reinforced chassis provided by an embodiment of the present utility model;
fig. 12 is a front cross-sectional view of an air-cooled reinforced chassis with heat transfer direction according to an embodiment of the present utility model;
fig. 13 is a schematic structural diagram with dimensions of an air-cooled reinforced chassis according to an embodiment of the present disclosure;
the reference numerals correspond to the following:
a cold plate assembly 1; a mounting plate 11; a card slot 111; a module slot 112; a mounting groove 113; a transition tuyere 114; corrugated plate 12; a ventilation groove 121; a wrapping plate 13; a front panel 2; a rear panel 3; a connector 31; a first side plate 4; a second side plate 5; a first vent 51; a second ventilation opening 52; a fan part 6; an air inlet 7; an internal air duct 8.
[ detailed description ] of the utility model
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present utility model and do not require that the present utility model must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1:
the two cold plate assemblies 1, the front panel 2, the rear panel 3, the first side plate 4 and the second side plate 5 are connected in a preset mode to form a chassis with an internal cavity, and the internal cavity of the chassis is used for inserting a module.
In this embodiment, the cold plate assemblies 1 disposed at the top and at the bottom are identical and identical in size and model.
The pre-mode refers to that two cold plate assemblies 1, a front panel 2, a rear panel 3, a first side plate 4 and a second side plate 5 are welded to form a cuboid or square chassis, two cold plate assemblies 1 are respectively and oppositely arranged at the top and the bottom of the chassis, the front panel 2, the rear panel 3, the first side plate 4 and the second side plate 5 are arranged at the side edge around the chassis, the front panel 2 and the rear panel 3 are oppositely arranged and are parallel to each other, and the first side plate 4 and the second side plate 5 are oppositely arranged and are parallel to each other.
The connector 31 is disposed on the inner surface of the rear panel 3, the fan component 6 is disposed on the outer surface of the second side plate 5, and the fan component 6 is a conventional radiator fan assembly for a chassis, and is configured to suck external air into the chassis, exchange heat in the chassis, and then discharge the heat exchanged air.
2-4, wherein FIG. 2 is a side view of a first side panel orientation, arrows in FIG. 4 represent air flow direction in the chassis; two cold plate assemblies 1 are all provided with air intake 7 towards first curb plate 4 one end, air intake 7 with the inside one end butt joint of inside wind channel 8 of cold plate assembly 1, inside wind channel 8 other end is led to fan part 6, the air is followed air intake 7 gets into and passes through inside wind channel 8, the air carries out the heat exchange to the inside module of quick-witted case when inside wind channel 8, the air after carrying out the heat exchange is followed fan part 6 discharges.
In this embodiment, the air inlet 7 is disposed on the end surfaces of the two cold plate assemblies 1, and when the module is installed inside the chassis, air enters from the two cold plate assemblies 1 at the top and the bottom, exchanges heat with the module installed in the cavity, and completes heat dissipation of the module through the fan component 6.
In this embodiment, the internal air duct 8 is perpendicular to the first side plate 4 and the second side plate 5, and the air inlet 7 is located on the plane of the first side plate 4, so that the fan component 6 can be disposed on the second side surface, and thus the fan component and the connector 31 are not required to be disposed on the same plate, and the size of the chassis is greatly reduced.
The embodiment provides an air-cooled reinforced chassis, as shown in fig. 5, by arranging connectors 31 and a fan component 6 on different panels of the chassis, and arranging an internal air duct 8 on a top panel and a bottom panel of the chassis, the internal air duct 8 leads to the fan component 6, an air inlet 7 of the internal air duct 8 is arranged at the end face of the top panel and the end face of the bottom panel, air enters the internal air duct 8 from the air inlet 7, and after heat exchange is performed in the chassis, the air is discharged from the fan component 6, so that the heat dissipation requirement of the chassis is completed; and the connector 31 and the fan component 6 are arranged on different panels of the chassis, compared with the conventional chassis in the existing market, the rear panel 3 reduces the occupied space area of the fan component 6, and the side panels only increase the thickness of the fan panel, so that the size and occupied space of the chassis are greatly reduced.
The cold plate assembly 1 requires the installation for the module and the arrangement of the internal air duct 8, so this embodiment also involves the following design:
as shown in fig. 6a, which is an exploded view of two cold plate assemblies 1, the cold plate assemblies 1 further comprise: mounting plate 11, corrugated plate 12 and wrapper 13, wherein:
the cold plate assembly 1 is formed by sequentially overlapping and welding the mounting plate 11, the corrugated plate 12 and the wrapping plate 13, wherein the mounting plate 11 is positioned at the inner layer of the case, the wrapping plate 13 is positioned at the outer layer of the case, and the corrugated plate 12 is positioned between the mounting plate 11 and the wrapping plate 13.
As shown in fig. 6b, which is an exploded view of another two cold plate assemblies 1, the difference is that mounting blocks are provided at four corners of a mounting plate 11' of the lower cold plate assembly, and mounting holes are provided on the mounting blocks to mount the cabinet at predetermined positions.
It should be noted that, for distinguishing from fig. 6a, the reference numeral 11 'is used herein, and the mounting plate 11 shown in the other drawings may be the mounting plate 11 of fig. 6a or the mounting plate 11' of fig. 6 a.
As shown in fig. 7, ventilation grooves 121 are formed in both sides of the corrugated plate 12, the extension direction of the ventilation grooves 121 is perpendicular to the plane where the first side plate 4 is located and the plane where the second side plate 5 is located, and the ventilation grooves 121 on the corrugated plate 12 are abutted to the mounting plate 11 and the wrapping plate 13 to obtain the internal air duct 8.
In this embodiment, the end surfaces of the ventilation slots 121 of the corrugated plate 12 are rectangular, and when the upper and lower surfaces of the corrugated plate 12 are in contact with the wrapping plate 13 and the mounting plate 11, each ventilation slot 121 on the corrugated plate 12 forms an internal air duct 8 with the wrapping plate 13 and the mounting plate 11 in contact, and is used for transmitting and receiving the incoming air, and performing heat exchange with the inside of the chassis in the internal air duct 8.
As shown in fig. 8, a clamping groove 111 is formed on one surface of the mounting plate 11 facing the inside of the case, and the extending direction of the clamping groove 111 is perpendicular to the plane of the front panel 2 and the plane of the rear panel 3; the top clamping groove 111 and the bottom clamping groove 111 in the same vertical direction are corresponding to a module groove 112 for inserting a module.
In this embodiment, at least two steps are disposed on one surface of the mounting plate 11 facing the inside of the chassis, the steps extend to two end surfaces of the mounting plate 11, and the extending direction is perpendicular to the plane where the front panel 2 is located and the plane where the rear panel 3 is located, the concave surface between the two steps is the slot 111, and when a module is inserted, the module enters from the end surface of the module slot 112 at the front panel 2 and is inserted along the extending direction of the slot 111.
Since corrugated plate 12 requires a relatively airtight space between mounting plate 11 and wrapper 13 for air transport, this embodiment also involves the following design:
as shown in fig. 9, a side of the mounting plate 11 facing the corrugated plate 12 is provided with a mounting groove 113, and the mounting groove 113 is used for providing the corrugated plate.
One end of the mounting groove 113 extends to the end face of the mounting plate 11, so that the end face of one end of the corrugated plate 12 is exposed, and the air inlet 7 is obtained.
The other end of the mounting groove 113 is provided with a transition air port 114, the transition air port 114 is in butt joint with the other end of the corrugated plate 12, and the transition air port 114 is used for outputting air of the internal air duct 8 from the cold plate assembly 1.
The mounting plate 11 is used for setting up the draw-in groove 111, the mounting plate 11 another side is provided with mounting groove 113, the mounting groove 113 size with buckled plate 12 assorted is used for holding buckled plate 12 to press from both sides buckled plate 12 between mounting plate 11 and wrapper 13, and with mounting plate 11 and wrapper 13 welding mutually, and mounting groove 113 extends to mounting plate 11 terminal surface makes the terminal surface of buckled plate 12 orientation mounting plate 11 terminal surface and expose, thereby receive the outside air.
In order to collect and discharge all the air of the inner duct 8 in the upper and lower cold plate assemblies 1 at the blower part 6, the present embodiment also relates to the following design.
As shown in fig. 10 and 11, the second side plate 5 is hollow and box-shaped, the upper and lower ends of the second side plate 5 are respectively abutted against the two mounting plates 11, the upper and lower ends of the second side plate 5 are respectively provided with a first ventilation opening 51, and the first ventilation opening 51 is abutted against a transition air opening 114 on the mounting plates 11 and is used for receiving air from the air channels 8 in the upper and lower ends.
A second air vent 52 is provided on a side of the second side plate 5 facing the fan unit 6, and the second air vent 52 is configured to output air received by the second side plate 5 to the fan unit 6 and exhaust the air from the fan unit 6.
As shown in fig. 12, the arrows in fig. 12 represent the heat transmission direction, the modules in the chassis are abutted against the side surfaces of the steps on both sides of the slot 111, the heat of the modules is transferred to the internal air duct 8 through the side surfaces of the steps, and is exchanged with the air in the internal air duct 8, the air in the internal air duct 8 enters the second side plate 5 through the transition air port 114 and the first air port 51, and is output from the second air port 52 to the fan component 6, and is discharged through the fan component.
The second side plate 5 is not provided with an opening towards one surface inside the case, the module closest to the second side plate 5 is directly clung to the second side plate 5, and the module transfers self heat to the second side plate 5 and outputs the heat through the fan component 6.
The module closest to the first side plate 4 is directly attached to the first side plate 4, and the module transfers its own heat to the first side plate 4 and outputs the heat to the outside air.
The fan unit 6 specifically includes: fan and ventilation hood housing, wherein: the fan shaft is connected to the inside of the ventilation hood shell, and the ventilation hood shell is fixed on the outer surface of the second side face.
As shown in fig. 13, this embodiment provides an air-cooled reinforced chassis with a reference size, which is 225±1mm long, 235±1mm wide, and 129±1mm high, and this size is used as a reference only and is not intended to limit the protection scope of this embodiment.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. An air-cooled reinforced chassis, comprising: two cold plate package (1), front panel (2), rear panel (3), first curb plate (4), second curb plate (5), fan subassembly (6) and connector (31), wherein:
the two cold plate assemblies (1), the front panel (2), the rear panel (3), the first side plate (4) and the second side plate (5) are connected in a preset mode to form a chassis with an inner cavity, and the inner cavity of the chassis is used for inserting a module;
the connector (31) is arranged on the inner surface of the rear panel (3);
the fan component (6) is arranged on the outer surface of the second side plate (5);
one end of each cold plate assembly (1) facing the first side plate (4) is provided with an air inlet (7), the air inlets (7) are butted with one end of an internal air duct (8) in the cold plate assemblies (1), and the other end of the internal air duct (8) is communicated with the fan component (6);
the air enters from the air inlet (7) and passes through the inner air duct (8), the air exchanges heat with the modules in the case when in the inner air duct (8), and the air after heat exchange is discharged from the fan component (6).
2. An air-cooled reinforced chassis according to claim 1, wherein two cold plate assemblies (1) are respectively arranged at the top and the bottom of the chassis in an opposite manner, the front panel (2), the rear panel (3), the first side plate (4) and the second side plate (5) are arranged at the peripheral side of the chassis, the front panel (2) and the rear panel (3) are arranged in an opposite manner and are parallel to each other, and the first side plate (4) and the second side plate (5) are arranged in an opposite manner and are parallel to each other.
3. An air-cooled reinforced chassis according to claim 1, wherein the cold plate assembly (1) further comprises: mounting panel (11), buckled plate (12) and package board (13), wherein:
the cold plate assembly (1) is formed by sequentially superposing and welding the mounting plate (11), the corrugated plate (12) and the wrapping plate (13), wherein the mounting plate (11) is positioned on the inner layer of the case, and the wrapping plate (13) is positioned on the outer layer of the case.
4. An air-cooled reinforced chassis according to claim 3, wherein ventilation grooves (121) are formed on two sides of the corrugated plate (12), the extension direction of the ventilation grooves (121) is perpendicular to the plane of the first side plate (4), and the ventilation grooves (121) on the corrugated plate (12) are abutted with the mounting plate (11) and the wrapping plate (13) to form the internal air duct (8).
5. An air-cooled reinforced chassis according to claim 3, wherein a clamping groove (111) is formed in one surface of the mounting plate (11) facing the interior of the chassis, and the extending direction of the clamping groove (111) is perpendicular to the plane of the front panel (2) and the plane of the rear panel (3);
the clamping groove (111) at the top and the clamping groove (111) at the bottom in the same vertical direction are correspondingly a module groove (112) for inserting a module.
6. An air-cooled reinforced chassis according to claim 3, wherein the mounting plate (11) is provided with a mounting groove (113) towards the corrugated plate (12), and the mounting groove (113) is used for arranging the corrugated plate (12).
7. An air-cooled reinforced chassis according to claim 6, wherein one end of the mounting groove (113) extends to the end face of the mounting plate (11), so that the end face of one end of the corrugated plate (12) is exposed to obtain the air inlet (7).
8. The air-cooled reinforced chassis according to claim 7, wherein a transition air port (114) is provided at the other end of the mounting groove (113), the transition air port (114) is abutted with the other end of the corrugated plate (12), and the transition air port (114) is used for outputting air of the internal air duct (8) from the cold plate assembly (1).
9. The air-cooled reinforced chassis according to claim 8, wherein the second side plate (5) is hollow and box-shaped, the upper and lower ends of the second side plate (5) are respectively abutted against the two mounting plates (11), the upper and lower ends of the second side plate (5) are respectively provided with a first ventilation opening (51), and the first ventilation opening (51) is abutted against a transition air opening (114) on the mounting plate (11) and is used for receiving air from the air channels (8) in the upper and lower ends;
a second air vent (52) is arranged on one side, facing the fan component (6), of the second side plate (5), and the second air vent (52) is used for outputting air received by the second side plate (5) to the fan component (6) and discharging the air from the fan component (6).
10. An air-cooled reinforced chassis according to claim 1, wherein the fan component (6) comprises in particular: fan and ventilation hood housing, wherein:
the fan is connected with the inside of the ventilation hood shell, and the ventilation hood shell is fixed on the outer surface of the second side plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320282268.3U CN219162645U (en) | 2023-02-21 | 2023-02-21 | Air-cooled reinforcement machine case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320282268.3U CN219162645U (en) | 2023-02-21 | 2023-02-21 | Air-cooled reinforcement machine case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219162645U true CN219162645U (en) | 2023-06-09 |
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ID=86644444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320282268.3U Active CN219162645U (en) | 2023-02-21 | 2023-02-21 | Air-cooled reinforcement machine case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219162645U (en) |
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2023
- 2023-02-21 CN CN202320282268.3U patent/CN219162645U/en active Active
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