CN212991641U - High-stability low-voltage alternating-current power distribution cabinet - Google Patents
High-stability low-voltage alternating-current power distribution cabinet Download PDFInfo
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- CN212991641U CN212991641U CN202021572241.0U CN202021572241U CN212991641U CN 212991641 U CN212991641 U CN 212991641U CN 202021572241 U CN202021572241 U CN 202021572241U CN 212991641 U CN212991641 U CN 212991641U
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- 238000005192 partition Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 8
- 230000005672 electromagnetic field Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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Abstract
The utility model provides a low-voltage AC power distribution cabinet of high stability belongs to low-voltage AC power distribution cabinet technical field, and this low-voltage AC power distribution cabinet of high stability includes shell subassembly and shielding subassembly. The shell component comprises a base, a first side plate, a second side plate, a first cabin door, a second cabin door and a top seat, and the shielding component comprises a first shielding plate, a second shielding plate, a first shielding clapboard, a second shielding clapboard, a third shielding plate, a fourth shielding plate and a first shielding cabinet. The magnetic field generated by the strong current circuit is shielded on the first shielding plate and the second shielding plate, the weak current control circuit is shielded and protected by the third shielding plate, the fourth shielding plate, the first shielding partition plate, the second shielding partition plate and the first shielding cabinet, the weak current control circuit is always under the protection of the shielding assembly, the interference effect of the strong current magnetic field on the weak current control circuit is reduced, the stability of the low-voltage alternating current power distribution cabinet is improved, and the using effect of the low-voltage alternating current power distribution cabinet is better.
Description
Technical Field
The utility model relates to a low-voltage AC power distribution cabinet technical field particularly, relates to a low-voltage AC power distribution cabinet of high stability.
Background
The low-voltage alternating-current power distribution cabinet is suitable for a power distribution system with alternating current of 50Hz, rated working voltage of 380V, rated working current of 3150A for power users of power plants, transformer substations, plant and mining enterprises and the like, and is used for converting, distributing and controlling electric energy of power, lighting and power distribution equipment. The low-voltage alternating-current power distribution cabinet has the characteristics of strong breaking capacity, good dynamic and thermal stability, flexible electric scheme, convenient combination, strong seriousness and practicability, novel structure and the like, a part of weak current circuit instruments are controlled in the low-voltage alternating-current power distribution cabinet, and when the power distribution cabinet is generally arranged, the weak current circuit and the strong current circuit are kept away from the arrangement so as to improve the stability of the low-voltage alternating-current power distribution cabinet.
However, the above scheme still has certain defects, and the inventor finds that a strong current circuit is easy to generate a magnetic field and easily interferes with a weak current circuit, the distribution cabinet is unreasonable in layout, and a part of weak current control circuit is exposed in the magnetic field of the strong current circuit and interferes with a control circuit of a low-voltage alternating current distribution cabinet, so that the control of the low-voltage alternating current distribution cabinet fails, and the stability of the low-voltage alternating current distribution cabinet is reduced.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the utility model provides a low-voltage AC power distribution cabinet of high stability aims at improving the not enough problem of low-voltage AC power distribution cabinet stability.
The utility model discloses a realize like this:
the utility model provides a low-voltage AC power distribution cabinet of high stability includes shell subassembly and shielding subassembly.
The shell component comprises a base, a first side plate, a second side plate, a first cabin door, a second cabin door and a top seat, wherein the first side plate is vertically arranged on one side of the upper surface of the base, the second side plate is vertically arranged on the other side of the upper surface of the base far away from the first side plate, the first cabin door is vertically arranged between the first side plate and the second side plate, one side of the first cabin door is hinged to one side of the second side plate, the second cabin door is vertically arranged between the first side plate and the second side plate, one side of the second cabin door is hinged to one side of the second side plate, two sides of the bottom of the top seat are respectively fixed on the top of the first side plate and the top of the second side plate, the shielding component comprises a first shielding plate, a second shielding plate, a first shielding clapboard, a second shielding clapboard, a third shielding plate, a fourth shielding plate and a first shielding, the first shielding plate is vertically arranged adjacently to the first cabin door, the lower end of the first side plate is arranged between the lower ends of the second side plates, the second shielding plate is vertically arranged adjacently to the second cabin door, the lower end of the first side plate is arranged between the lower ends of the second side plates, two sides of the bottom of the first shielding baffle are respectively horizontally arranged at the top of the first shielding plate and the top of the second shielding plate, the second shielding baffle is horizontally arranged above the first shielding baffle, the upper end of the first side plate is arranged between the upper ends of the second side plates, the third shielding plate is vertically arranged at one side outside the side wall of the first shielding plate, the fourth shielding plate is vertically arranged at one side outside the side wall of the second shielding plate, and the first shielding cabinet is arranged at the upper surface of the first shielding baffle and the upper surface of the second shielding baffle.
In an embodiment of the present invention, the base bottom is provided with a cushion pad.
In an embodiment of the present invention, the first side plate side wall is provided with a first panel at an upper end thereof.
In an embodiment of the present invention, the first compartment door side wall is provided with a first dust filtering box, the first dust filtering box faces the outside atmosphere and the first shielding plate and the first shielding cabinet respectively.
In an embodiment of the present invention, a first centrifugal fan is disposed on one side of the sidewall of the second compartment door, and the first centrifugal fan faces the outside atmosphere and the second shielding partition and the first shielding cabinet, respectively.
In an embodiment of the present invention, the lifting lugs are disposed around the top seat.
In an embodiment of the present invention, a first supporting bracket is disposed on one side of the first side plate sidewall and a second supporting bracket is disposed on one side of the second side plate sidewall, the first shielding plate is vertically disposed between the first supporting brackets of the adjacent first doors, and the second shielding plate is disposed between the first supporting brackets of the adjacent second doors.
In an embodiment of the present invention, a first mounting seat is disposed on one side of the third shielding plate sidewall, and the first mounting seat is fixed on one side of the first shielding plate sidewall.
In an embodiment of the present invention, a second mounting seat is disposed on one side of the fourth shielding plate sidewall, and the second mounting seat is fixed on one side of the second shielding plate sidewall.
In an embodiment of the present invention, the first shielding cabinet has a heat dissipation through groove on its surface.
The utility model has the advantages that: the utility model discloses a low-voltage AC power distribution cabinet of high stability that above-mentioned design obtained, during the use, with first shield plate and the vertical first curb plate of inserting of second shield plate and between the second curb plate, leave the shielding cavity between two shield plates, shield the magnetic field that strong current circuit produced on first shield plate and the second shield plate, install the third shield plate on the first shield plate lateral wall, weak current control circuit shielding protection on the first shield plate, install the fourth shield plate on the second shield plate, weak current control circuit shielding protection on the second shield plate, put important PLC master control, weak current switch etc. into first shield cabinet, shield the strong current circuit magnetic field in the low-voltage AC power distribution cabinet, first shield baffle and second shield baffle shielding further shield strong electromagnetic field in the low-voltage AC power distribution cabinet, with PLC master control in the first shield cabinet, The shielding protection such as light current switch gets up, compares traditional low-voltage AC power distribution cabinet, and light current control circuit is under shielding assembly's protection all the time, and multiple shielding protection has further reduced the interference effect of forceful electric magnetic field to light current control circuit, has improved low-voltage AC power distribution cabinet's stability, and low-voltage AC power distribution cabinet's result of use is better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a first-view perspective structure of a high-stability low-voltage ac power distribution cabinet according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second perspective three-dimensional structure of a high-stability low-voltage ac power distribution cabinet according to an embodiment of the present invention;
fig. 3 is a schematic view of a first viewing angle structure of a first shielding plate and a second shielding plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second viewing angle of the first shielding plate and the second shielding plate according to an embodiment of the present invention.
In the figure: 100-a housing assembly; 110-a base; 111-a cushion; 120-a first side panel; 121-a first panel; 130-a second side plate; 131-a first support bracket; 140-a first door; 141-a first dust filtration box; 150-a second door; 151-first centrifugal fan; 160-top seat; 161-lifting lugs; 200-a shielding assembly; 210-a first shielding plate; 220-a second shielding plate; 230-a first shielding spacer; 240-a second shielding spacer; 250-a third shielding plate; 251-a first mount; 260-a fourth shielding plate; 261-a second mount; 270-a first shielded cabinet; 271-heat dissipation through groove.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are 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.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1, 2, 3 and 4, the present invention provides a technical solution: the utility model provides a low-voltage AC power distribution cabinet of high stability includes shell subassembly 100 and shielding subassembly 200, and shielding subassembly 200 is installed in shell subassembly 100, and shielding subassembly 200 separates the shielding with strong current circuit and weak current control circuit in the low-voltage AC power distribution cabinet, protects weak current control circuit through multiple shielding structure.
Referring to fig. 1 and 2, the enclosure assembly 100 includes a base 110, a first side plate 120, a second side plate 130, a first door 140, a second door 150, and a top seat 160, the first side plate 120 is vertically disposed on one side of an upper surface of the base 110, the first side plate 120 is bolted to the base 110, the second side plate 130 is vertically disposed on the other side of the upper surface of the base 110 away from the first side plate 120, the second side plate 130 is bolted to the base 110, the first door 140 is vertically disposed between the first side plate 120 and the second side plate 130, one side of the first door 140 is hinged to one side of the second side plate 130, the low voltage ac power distribution cabinet is installed and debugged by opening the first door 140, the second door 150 is vertically disposed between the first side plate 120 and the second side plate 130, one side of the second door 150 is hinged to one side of the second side plate 130, the low voltage ac power distribution cabinet is installed and debugged by the second door 150, two sides of the bottom of, the top chassis 160 is bolted to the first side plate 120 and the second side plate 130.
Wherein, the bottom of the base 110 is provided with a buffer cushion 111 for reducing the vibration of the low-voltage AC power distribution cabinet in the installation process, resulting in the loose circuit and the damage of circuit elements, the upper end of the side wall of the first side plate 120 is provided with a first panel 121 for facilitating the debugging of the circuit of the low-voltage AC power distribution cabinet, one side of the side wall of the first cabin door 140 is provided with a first dust filtering box 141, the first dust filtering box 141 is connected with the first cabin door 140 by bolts, the first dust filtering box 141 faces the outside atmosphere and the first shielding plate 210 and the first shielding cabinet 270 respectively, the first dust filtering box 141 filters the outside air for reducing the heat dissipation variation of the low-voltage AC power distribution cabinet caused by the electrostatic absorption of dust of the equipment, one side of the side wall of the second cabin door 150 is provided with a first centrifugal fan 151, the second cabin door 150 is connected with the first centrifugal fan 151 by bolts, the first centrifugal fan 151 faces the outside, electronic components dispel the heat in to low-voltage AC power distribution cabinet through first centrifugal fan 151, improve low-voltage AC power distribution cabinet's life, reduce the brake-pulling that overheat protection caused, improve its operating stability, footstock 160 week side is provided with lug 161, makes things convenient for lifting by crane the transportation of switch board.
Referring to fig. 1, 2, 3 and 4, the shielding assembly 200 includes a first shielding plate 210, a second shielding plate 220, a first shielding partition 230, a second shielding partition 240, a third shielding plate 250, a fourth shielding plate 260 and a first shielding cabinet 270, wherein a first supporting bracket 131 is disposed on each of a side wall of the first side plate 120 and a side wall of the second side plate 130, the first supporting bracket 131 is connected to the first side plate 120 and the second side plate 130 by bolts, the first shielding plate 210 is vertically disposed between the first supporting brackets 131 of adjacent first doors 140, the second shielding plate 220 is disposed between the first supporting brackets 131 of adjacent second doors 150, a strong electric shielding cavity is disposed between the first shielding plate 210 and the second shielding plate 220 to further shield a strong electric line magnetic field and reduce interference to a weak electric circuit, the first shielding plate 210 is vertically disposed between a lower end of the first side plate 120 of adjacent first doors 140 and a lower end of the second side plate 130, the second shield plate 220 is vertically disposed between the lower ends of the first and second side plates 120, 130 of adjacent second doors 150.
Wherein, two sides of the bottom of the first shielding clapboard 230 are respectively horizontally arranged on the top of the first shielding plate 210 and the top of the second shielding plate 220, one side of the side wall between one side of the side wall of the first side plate 120 and the second side plate 130 is provided with a bracket, the periphery of the first shielding clapboard 230 is arranged on the bracket, the first shielding clapboard 230 shields the strong electromagnetic field at the lower end of the cavity of the low-voltage power distribution cabinet, the second shielding clapboard 240 is horizontally arranged between the upper end of the first side plate 120 above the first shielding clapboard 230 and the upper end of the second side plate 130, one side of the side wall between one side of the side wall of the first side plate 120 and the second side plate 130 is provided with a bracket, the periphery of the second shielding clapboard 240 is arranged on the bracket, the second shielding clapboard 240 shields the strong electromagnetic field at the lower end of the cavity of the low-voltage power distribution cabinet, one side of the side wall of the third shielding plate 250 is provided with, the first mounting seat 251 is bolted to the first shielding plate 210, in this embodiment, the weak current control circuit controls the strong current circuit through an electronic component such as a relay, and in order to reduce the interference of the strong electromagnetic field to the weak current circuit, the third shielding plate 250 is provided to shield and protect the weak current control circuit, and the third shielding plate 250 is vertically provided on the outer side of the sidewall of the first shielding plate 210.
Wherein, a second mounting seat 261 is arranged on one side of the sidewall of the fourth shielding plate 260, the fourth shielding plate 260 and the second mounting seat 261 are integrally formed, one side of the second mounting seat 261 is fixed on one side of the sidewall of the second shielding plate 220, the second mounting seat 261 is connected with the second shielding plate 220 by a bolt, the fourth shielding plate 260 is vertically arranged on one side outside the sidewall of the second shielding plate 220, in this embodiment, the weak current control circuit controls the strong current circuit by electronic components such as a relay, in order to reduce the interference of the strong current field to the weak current circuit, the fourth shielding plate 260 is arranged to shield and protect the weak current control circuit, the first shielding cabinet 270 is arranged on the upper surface of the first shielding partition 230 and the upper surface of the second shielding partition 240, the upper surface of the first shielding partition 230 and the upper surface of the second shielding partition 240 are provided with a clamping groove, the first shielding cabinet 270 is arranged in the clamping groove, the surface of the first shielding cabinet 270 is provided with, the heat dissipation of the first shielding cabinet 270 is increased, and in the embodiment, controllers such as a PLC are installed in the first shielding cabinet 270, so that the interference of a strong electromagnetic field in the low-voltage alternating-current power distribution cabinet is further reduced.
Specifically, this low-voltage AC distribution cabinet's of high stability theory of operation: when in use, the first shielding plate 210 and the second shielding plate 220 are vertically inserted between the first supporting bracket 131, a shielding cavity is reserved between the two shielding plates, a magnetic field generated by a strong current circuit on the first shielding plate 210 and the second shielding plate 220 is shielded, the third shielding plate 250 is installed on the side wall of the first shielding plate 210, a weak current control circuit on the first shielding plate 210 is shielded and protected, the fourth shielding plate 260 is installed on the second shielding plate 220, the weak current control circuit on the second shielding plate 220 is shielded and protected, important PLC main controls, weak current switches and the like are put into the first shielding cabinet 270 to shield the strong current circuit magnetic field in the low-voltage alternating current power distribution cabinet, the first shielding partition plate 230 and the second shielding partition plate 240 shield the strong electromagnetic field in the low-voltage alternating current power distribution cabinet, the PLC main controls, the weak current switches and the like in the first shielding cabinet 270 are shielded and protected, the strong current circuit and the weak current circuit are separated and shielded, and the weak current control circuit is always under the protection of the shielding assembly 200 through multiple shielding, so that the stability and the use effect of the low-voltage alternating-current power distribution cabinet are improved.
It should be noted that the specific model specification of the first centrifugal fan 151 needs to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted.
The power supply of the first centrifugal fan 151 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-stability low-voltage AC power distribution cabinet is characterized by comprising
A housing assembly (100), the housing assembly (100) including a base (110), a first side plate (120), a second side plate (130), a first door (140), a second door (150) and a top seat (160), the first side plate (120) is vertically disposed on one side of the upper surface of the base (110), the second side plate (130) is vertically disposed on the other side of the upper surface of the base (110) away from the first side plate (120), the first door (140) is vertically disposed between the first side plate (120) and the second side plate (130), one side of the first door (140) is hinged to one side of the second side plate (130), the second door (150) is vertically disposed between the first side plate (120) and the second side plate (130), one side of the second door (150) is hinged to one side of the second side plate (130), and two sides of the bottom of the top seat (160) are respectively fixed to the top of the first side plate (120) and the second side plate (130), (160) 130) A top portion;
a shielding assembly (200), said shielding assembly (200) comprising a first shielding plate (210), a second shielding plate (220), a first shielding partition (230), a second shielding partition (240), a third shielding plate (250), a fourth shielding plate (260) and a first shielding cabinet (270), said first shielding plate (210) being vertically disposed adjacent to said first door (140) between said first side plate (120) lower end and said second side plate (130) lower end, said second shielding plate (220) being vertically disposed adjacent to said second door (150) between said first side plate (120) lower end and said second side plate (130) lower end, said first shielding partition (230) bottom two sides being horizontally disposed at said first shielding plate (210) top and said second shielding plate (220) top, said second shielding partition (240) being horizontally disposed above said first shielding partition (230) between said first side plate (120) upper end and said second side plate (130) Between the upper end, third shield plate (250) vertical setting is in first shield plate (210) lateral wall outside one side, fourth shield plate (260) vertical setting is in second shield plate (220) lateral wall outside one side, and first shielding cabinet (270) set up first shielding baffle (230) upper surface and second shielding baffle (240) upper surface.
2. A high stability low voltage ac distribution cabinet according to claim 1, wherein said base (110) is provided with a cushion (111) at the bottom.
3. High-stability low-voltage alternating-current distribution cabinet according to claim 1, wherein said first side plate (120) is provided with a first panel (121) at the upper end of the side wall.
4. High-stability low-voltage alternating-current distribution cabinet according to claim 1, wherein said first hatch (140) is provided, on one side of its lateral wall, with a first dust-filtering box (141), said first dust-filtering box (141) facing the outside atmosphere and said first shielding plate (210) and said first shielding cabinet (270), respectively.
5. A high stability low voltage ac distribution cabinet according to claim 1, wherein said second door (150) is provided with a first centrifugal fan (151) on one side of its side wall, said first centrifugal fan (151) facing the outside atmosphere and said second shielding partition (240) and said first shielding cabinet (270), respectively.
6. A high stability low voltage ac distribution cabinet according to claim 1, wherein said top seat (160) is circumferentially provided with a lifting lug (161).
7. A high stability low voltage ac distribution cabinet according to claim 1, wherein said first side panel (120) and said second side panel (130) are provided with a first support bracket (131) on each side of the side wall, said first shielding plate (210) is vertically disposed between said first support brackets (131) of adjacent first doors (140), and said second shielding plate (220) is disposed between said first support brackets (131) of adjacent second doors (150).
8. The distribution cabinet for low-voltage alternating-current power of claim 1, wherein a first mounting seat (251) is disposed on one side of a sidewall of the third shielding plate (250), and one side of the first mounting seat (251) is fixed to one side of a sidewall of the first shielding plate (210).
9. The low-voltage AC distribution cabinet with high stability according to claim 1, wherein a second mounting seat (261) is disposed on one side of a sidewall of said fourth shielding plate (260), and one side of said second mounting seat (261) is fixed on one side of a sidewall of said second shielding plate (220).
10. The distribution cabinet according to claim 1, wherein said first shielding cabinet (270) has a heat dissipation channel (271) on its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021572241.0U CN212991641U (en) | 2020-07-31 | 2020-07-31 | High-stability low-voltage alternating-current power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021572241.0U CN212991641U (en) | 2020-07-31 | 2020-07-31 | High-stability low-voltage alternating-current power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212991641U true CN212991641U (en) | 2021-04-16 |
Family
ID=75430959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021572241.0U Expired - Fee Related CN212991641U (en) | 2020-07-31 | 2020-07-31 | High-stability low-voltage alternating-current power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212991641U (en) |
-
2020
- 2020-07-31 CN CN202021572241.0U patent/CN212991641U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |