CN218633880U - Power information secrecy device and information secrecy power socket - Google Patents
Power information secrecy device and information secrecy power socket Download PDFInfo
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- CN218633880U CN218633880U CN202222514404.5U CN202222514404U CN218633880U CN 218633880 U CN218633880 U CN 218633880U CN 202222514404 U CN202222514404 U CN 202222514404U CN 218633880 U CN218633880 U CN 218633880U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a power information secrecy device and an information secrecy power socket, wherein the power information secrecy device comprises an electromagnetic shielding shell and an electromagnetic interference filter, and the electromagnetic interference filter is arranged in the electromagnetic shielding shell; the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, and comprises a common-mode interference suppression circuit unit and a differential-mode interference suppression circuit unit, wherein a first common-mode capacitor Cy1 and a second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit both adopt feedthrough capacitors. The defects that the capacitor of the common-mode capacitor Cy ceramic chip in the power supply EMI filter circuit in the prior art is small in working current and low in voltage resistance and the defects brought to a power supply information security device and a corresponding information security power socket are overcome, the security and confidentiality capacity of an office environment and a circuit information system is effectively improved, and the security leakage caused by electromagnetic radiation and power carrier waves is effectively prevented.
Description
Technical Field
The utility model relates to a secret field of power information relates to secret device of power information, specifically is a secret device of power information and secret supply socket of information.
Background
An Electromagnetic Interference (EMI) filter is commonly used in the existing information security power socket with Electromagnetic Interference resistance and Electromagnetic leakage resistance, and the low-pass filter can transmit direct current, 50Hz or 400Hz power supply power to electric equipment without attenuation, so that EMI signals transmitted by a power supply are greatly attenuated, and the electric equipment is protected from being damaged by the Electromagnetic Interference; meanwhile, the EMI signal generated by the electric equipment can be effectively inhibited, and the noise generated in the electric equipment is prevented from being leaked outwards to pollute the electromagnetic environment and harm other equipment. Mains EMI filters are indispensable devices that help electromagnetic equipment and systems meet standards regarding electromagnetic compatibility.
A circuit of a commonly used EMI filter of this type is shown in fig. 1, and the filter includes an anti-electromagnetic interference filter circuit composed of an inductor, a capacitor and a resistor in series/parallel connection, including a common mode interference suppression circuit unit and a differential mode interference suppression circuit unit, where Cx is connected between a phase line (L line) and a neutral line (N line), and is called differential mode capacitor; cy is connected between the phase line (L line) or the neutral line (N line) and the ground line (E line) and is called common mode capacitance; the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the annular second ferrite core Z2 to form a second common mode filter inductor; two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is electrically connected with the L wire, and the input end of the second coil L2 is electrically connected with the N wire; two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is electrically connected with an L 'wire output by the power supply, and the output end of the fourth coil L4 is electrically connected with an N' wire output by the power supply; two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is electrically connected with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is electrically connected with the output end of the second coil L2 and the input end of the fourth coil L4; one end of the first common mode capacitor Cy1 is electrically connected with the connection part of the first coil L1 and the third coil L3, and the other end of the first common mode capacitor Cy1 is electrically connected with the E line; one end of the second common mode capacitor Cy2 is electrically connected to a connection of the second coil L2 and the fourth coil L4, and the other end of the second common mode capacitor Cy2 is electrically connected to the E line.
The existing common mode capacitor Cy usually adopts a ceramic chip capacitor, and because the capacitor has small working current and low voltage withstanding value, the following defects exist:
1. when lightning strike occurs, high voltage is transmitted to socket electric equipment through a power supply carrier wire, so that the lightning strike accident can occur;
2. the capacitance of the ceramic chip can change along with the change of the environmental temperature, and the filtering cut-off rate of the filter can be influenced by the change of the capacitance; the bypass and coupling effects are poor, so that the direct coupling of high-frequency signals from the input end to the output end cannot be effectively prevented, and interference signals cannot be well inhibited in low-pass transmission signals;
3. when the ceramic chip capacitor works, the current is too small, so that the filtering effect and function are poor, and the security and confidentiality are directly weakened;
4. the requirements of various transmission rates of a power line carrier low-voltage distribution network on a filter circuit cannot be met;
5. the filter is not suitable for narrow and wide-band filtering of power supply and telecommunication.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art not enough, and provide a secret device of power information and secret supply socket of information to it is little to solve the common mode capacitor Cy ceramic chip electric capacity operating current in the prior art power EMI wave filter circuit, and the shortcoming that withstand voltage is low, and the drawback that brings for secret device of power information and corresponding secret supply socket of information from this.
Realize the utility model discloses the technical scheme of purpose is:
a power supply information secrecy device comprises an Electromagnetic shielding shell and an Electromagnetic Interference (EMI) filter, wherein the EMI filter is arranged in the Electromagnetic shielding shell; the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, and comprises a common-mode interference suppression circuit unit and a differential-mode interference suppression circuit unit, wherein the difference of the common-mode interference suppression circuit unit in the prior art is that a first common-mode capacitor Cy1 and a second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit both adopt feedthrough capacitors.
Furthermore, the outer wall of the electromagnetic shielding shell is provided with a grounding connecting sheet;
two power supply incoming line connecting seats, namely a first power supply incoming line connecting seat and a second power supply incoming line connecting seat, are arranged at one side end of the electromagnetic shielding shell; the other side end of the electromagnetic shielding shell is provided with two power supply output end connecting seats, namely a first power supply output end connecting seat and a second power supply output end connecting seat;
the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 to form a first common mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the annular second ferrite core Z2 to form a second common mode filter inductor;
the two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of a first coil L1 and the input end of a second coil L2, the input end of the first coil L1 is electrically connected with an L wire welding piece of a first power supply inlet wire connecting seat, and the input end of the second coil L2 is electrically connected with an N wire welding piece of a second power supply inlet wire connecting seat;
the two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is electrically connected with the L 'wire welding piece of the first power output end connecting seat, and the output end of the fourth coil L4 is electrically connected with the N' wire welding piece of the second power output connecting seat;
two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is electrically connected with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is electrically connected with the output end of the second coil L2 and the input end of the fourth coil L4;
one end of a first common mode capacitor Cy1 is electrically connected with the connection part of the first coil L1 and the third coil L3, and the other end of the first common mode capacitor Cy1 is electrically connected with the inner wall of the electromagnetic shielding shell 1; one end of a second common-mode capacitor Cy2 is electrically connected with the connection position of the second coil L2 and the fourth coil L4, and the other end of the second common-mode capacitor Cy2 is electrically connected with the inner wall of the electromagnetic shielding shell;
the electromagnetic interference filter is sealed in the electromagnetic shielding shell by filling epoxy resin.
Further, the first common mode filter inductor and the second common mode filter inductor are arranged in the direction from the power supply inlet connecting seat to the power supply output connecting seat in the electromagnetic shielding shell; the first differential-mode capacitance Cx1 is arranged at the lower end part of the first common-mode filter inductor; the third differential-mode capacitance Cx3 is arranged at the lower end part of the second common-mode filter inductor; and the second differential mode capacitor Cx2 and the resistor R which are connected in parallel are vertically arranged between the first common mode filter inductor and the second common mode filter inductor, and two side surfaces of the second differential mode capacitor Cx2 are respectively abutted with the outer side surfaces of the first ferrite magnetic core Z1 and the second ferrite magnetic core Z2.
Further, the electromagnetic shielding shell is made of metal zinc.
Furthermore, the electromagnetic shielding shell comprises a shell body and an end cover, wherein the end cover is connected with the shell body into a whole through clamping or welding, and the electromagnetic interference filter filled with epoxy resin is sealed in the electromagnetic shielding shell.
The feedthrough capacitor is adopted in the power line communication filter circuit, and has the following advantages or effects:
1. the socket can prevent high voltage from transmitting to electric equipment on the socket through a power supply carrier line when in use, and thus, the socket plays a role in lightning protection;
2. compared with other types of capacitors in the circuit in the prior art, the capacity change of the feedthrough capacitor is less influenced by the environmental temperature, so that the filtering cut-off rate of the filter is prevented from being influenced by the capacity change; the inductance generated by the feedthrough capacitor is the minimum, the feedthrough capacitor belongs to the function of a pure capacitor filter, the bypass and coupling effects are good, high-frequency signals can be effectively prevented from being directly coupled to the output end from the input end, and interference signals can be well inhibited in the transmission signals of the low-pass EMI filter;
3. compared with other types of capacitors in a filter circuit in the prior art, the high-voltage power filter can flow large current of dozens of amperes, so that the filtering effect and function are improved and amplified, the security and confidentiality of office environment and a circuit information system are effectively improved, and the security leakage caused by electromagnetic radiation and power carrier waves is effectively prevented;
4. the filter circuit requirements of various transmission rates of a power line carrier low-voltage distribution network can be met;
5. the method is suitable for the application of a new narrow and wide band power carrier technology which combines power supply and telecommunication into a whole.
The information privacy power socket adopting the power supply information privacy device comprises a power supply plug and a patch board, wherein the power supply socket is arranged on the patch board, and is characterized in that the power supply information privacy device is connected in series between a connecting wire of the power supply plug and the power supply socket on the patch board, an L wire of the connecting wire of the power supply plug is electrically connected with an L wire welding sheet of a first power supply inlet wire connecting seat, and an N wire of the connecting wire of the power supply plug is electrically connected with an N wire welding sheet of a second power supply inlet wire connecting seat; the L 'wire of the power socket on the wiring board is electrically connected with the L' wire welding sheet of the first power output end connecting seat, and the N 'wire of the power socket on the wiring board is electrically connected with the N' wire welding sheet of the second power output end connecting seat; the E line of the power plug connecting line and the E line of the power socket are electrically connected with the grounding connecting sheet of the outer wall of the electromagnetic shielding shell.
Furthermore, the metal plug connector in the power socket is a surface contact plug connector and/or a locking plug connector.
The information security power socket has the advantages or effects that:
the novel electromagnetic EMI related technology is formed, the protection effect of electromagnetic interference signals is enhanced, better electromagnetic compatibility is achieved, the influence on human body radiation is reduced, and the interference resistance is stronger.
Drawings
FIG. 1 is a schematic circuit diagram of an EMI filter;
FIG. 2 is a schematic diagram illustrating the structural connection of the power information security device with the end cap of the electromagnetic shielding case opened;
FIG. 3 is a schematic diagram showing the structural connection of an information security power socket in which the power information security device is used.
In the figure, 1, an electromagnetic shielding shell 1-1, a shell 2, a grounding connecting sheet 3-1, a first power supply inlet wire connecting seat 3-11.L wire soldering lug 3-2, a second power supply inlet wire connecting seat 3-21.N wire soldering lug 4-1, a first power supply output end connecting seat 4-11.L 'wire soldering lug 4-2, a second power supply output end connecting seat 4-21. N' wire soldering lug 5, a power plug 6, a wiring board 7 and a power socket are arranged.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments and the accompanying drawings, in which it is apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1 and 2, a power information security device includes an Electromagnetic shielding case and an Electromagnetic Interference (EMI) filter disposed in the Electromagnetic shielding case;
the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, and comprises a common-mode interference suppression circuit unit and a differential-mode interference suppression circuit unit, wherein a first common-mode capacitor Cy1 and a second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit both adopt feedthrough capacitors. The feedthrough capacitor can be a CT85-1 type feedthrough capacitor with the capacity of 3300-4700pF.
Furthermore, the outer wall of the electromagnetic shielding shell 1 is welded with a grounding connecting sheet 2;
one side end of the electromagnetic shielding shell 1 is provided with two power supply incoming line connecting seats, namely a first power supply incoming line connecting seat 3-1 and a second power supply incoming line connecting seat 3-2; the other side end of the electromagnetic shielding shell 1 is provided with two power output end connecting seats, namely a first power output end connecting seat 4-1 and a second power output end connecting seat 4-2;
the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 for 10 circles to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the second ferrite core Z2 in the annular shape for 10 circles to form a second common mode filter inductor;
two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is welded with an L-line welding piece 3-11 of the first power supply inlet wire connecting seat 3-1, and the input end of the second coil L2 is welded with an N-line welding piece 3-21 of the second power supply inlet wire connecting seat 3-2; the capacity of the first differential mode capacitor Cx1 is 0.1 muF;
the two ends of a third differential mode capacitor Cx3 are respectively connected with the output end of a third coil L3 and the output end of a fourth coil L4, the output end of the third coil L3 is welded with an L 'wire welding piece 4-11 of a first power output connecting seat 4-1, and the output end of the fourth coil L4 is welded with an N' wire welding piece 4-21 of a second power output connecting seat 4-2; the capacity of the third differential mode capacitor Cx3 is 0.1 muF;
two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is welded with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is welded with the output end of the second coil L2 and the input end of the fourth coil L4; the capacity of the second differential mode capacitance Cx2 is 0.1 muF; the resistance value of the resistor R is 1.0M omega;
one end of a first common-mode capacitor Cy1 is welded with the joint of the first coil L1 and the third coil L3, and the other end of the first common-mode capacitor Cy1 is welded with the inner wall of the electromagnetic shielding shell 1; one end of a second common-mode capacitor Cy2 is welded with the joint of the second coil L2 and the fourth coil L4, and the other end of the second common-mode capacitor Cy2 is welded with the inner wall of the electromagnetic shielding shell 1;
the electromagnetic interference filter is filled and sealed in the shell 1-1 of the electromagnetic shielding shell 1 by adopting epoxy resin.
Further, the first common mode filter inductor and the second common mode filter inductor are arranged in the direction from the power supply inlet connecting seat to the power supply output connecting seat in the electromagnetic shielding shell; the first differential-mode capacitor Cx1 is arranged at the lower end part of the first common-mode filter inductor; the third differential-mode capacitance Cx3 is arranged at the lower end part of the second common-mode filter inductor; the second differential mode capacitor Cx2 and the resistor R which are connected in parallel are vertically arranged between the first common mode filter inductor and the second common mode filter inductor, two side surfaces of the second differential mode capacitor Cx2 are respectively connected with the outer side surfaces of the first ferrite magnetic core Z1 and the second ferrite magnetic core Z2 in an abutting mode, and electromagnetic interference among components is reduced.
Further, the electromagnetic shielding shell 1 is made of metal zinc.
Furthermore, the electromagnetic shielding shell 1 comprises a shell 1-1 and an end cover, wherein the end cover is connected with the shell 1-1 into a whole through clamping or welding, and the electromagnetic interference filter filled with epoxy resin is sealed in the electromagnetic shielding shell 1.
Example 2:
as shown in fig. 3, the information secrecy power socket using the power information secrecy device of embodiment 1 includes a power plug 5 and a patch board 6, the patch board 6 is provided with a power socket 7, the power information secrecy device is connected in series between a connection line of the power plug 5 and the power socket 7 on the patch board 6, an L line of the connection line of the power plug 5 is welded to an L line welding piece 3-11 of a first power inlet wire connection seat 3-1, and an N line of the connection line of the power plug 5 is welded to an N line welding piece 3-21 of a second power inlet wire connection seat 3-2; an L 'wire of a power socket 7 on the patch board 6 is welded with an L' wire welding sheet 4-11 of a first power output end connecting seat 4-1, and an N 'wire of the power socket 7 on the patch board 6 is welded with an N' wire welding sheet 4-21 of a second power output end connecting seat 4-2; the E line of the connecting line of the power plug 5 and the E line of the power socket 7 are welded with the grounding connecting sheet 2 on the outer wall of the electromagnetic shielding shell 1.
In order to ensure the reliable connection between the power socket and the plug of the electrical appliance, the metal plug-in connector in the power socket is a surface contact type plug-in connector and/or a clamping lock type plug-in connector.
The surface contact type strong-current plug connector can adopt a surface contact type strong-current plug connector disclosed in CN210074231U as an authorization notice number, and the clamping lock type plug connector can adopt a clamping lock type plug connector disclosed in CN204315862U and/or CN206379516U as authorization notice numbers.
The plug connector adopts a 360-degree columnar wrapping surface contact automatic clamping and fastening joint structure to replace a traditional splayed two-clamping piece copper sheet structure, is not easy to deform, does not strike fire, is firmly connected, and overcomes the defects and disadvantages of small connecting contact area, poor contact, serious fire striking, easy equipment damage and fire accidents of the prior art.
The socket contact plug-in connector increases the contact area of the socket and the plug when the socket works, is firm in connection, reduces the total contact resistance, sharply reduces and eliminates the heat productivity of the socket and the plug, and greatly increases the working reliability, thereby effectively preventing the socket and the plug from being burnt out, electric equipment from being damaged and fire from happening; and greatly prolongs the service life of the socket product.
Compared with the prior art, the socket is more ingenious in design, less in material consumption, not increased in process cost, different from an existing socket production mold, material-saving and long in service life.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A power supply information security device comprises an electromagnetic shielding shell and an electromagnetic interference filter, wherein the electromagnetic interference filter is arranged in the electromagnetic shielding shell; the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, and comprises a common-mode interference suppression circuit unit and a differential-mode interference suppression circuit unit, and is characterized in that a first common-mode capacitor Cy1 and a second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit both adopt feedthrough capacitors.
2. The power information security device according to claim 1, wherein the outer wall of the electromagnetic shielding shell is provided with a grounding connecting sheet; two power supply incoming line connecting seats, namely a first power supply incoming line connecting seat and a second power supply incoming line connecting seat, are arranged at one side end of the electromagnetic shielding shell; the other side end of the electromagnetic shielding shell is provided with two power supply output end connecting seats, namely a first power supply output end connecting seat and a second power supply output end connecting seat; the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the annular second ferrite core Z2 to form a second common mode filter inductor; the two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is electrically connected with an L-wire welding piece of the first power supply inlet wire connecting seat, and the input end of the second coil L2 is electrically connected with an N-wire welding piece of the second power supply inlet wire connecting seat; the two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is electrically connected with the L 'wire welding piece of the first power output end connecting seat, and the output end of the fourth coil L4 is electrically connected with the N' wire welding piece of the second power output connecting seat; two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is electrically connected with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is electrically connected with the output end of the second coil L2 and the input end of the fourth coil L4; one end of a first common-mode capacitor Cy1 is electrically connected with the joint of the first coil L1 and the third coil L3, and the other end of the first common-mode capacitor Cy1 is electrically connected with the inner wall of the electromagnetic shielding shell; one end of a second common-mode capacitor Cy2 is electrically connected with the joint of the second coil L2 and the fourth coil L4, and the other end of the second common-mode capacitor Cy2 is electrically connected with the inner wall of the electromagnetic shielding shell; the electromagnetic interference filter is sealed in the electromagnetic shielding shell by filling epoxy resin.
3. A power information security device according to claim 2, wherein the first common mode filter inductor and the second common mode filter inductor are arranged in a direction from the power inlet connector to the power outlet connector in the electromagnetic shield case; the first differential-mode capacitance Cx1 is arranged at the lower end part of the first common-mode filter inductor; the third differential-mode capacitance Cx3 is arranged at the lower end part of the second common-mode filter inductor; and the second differential mode capacitor Cx2 and the resistor R which are connected in parallel are vertically arranged between the first common mode filter inductor and the second common mode filter inductor, and two side surfaces of the second differential mode capacitor Cx2 are respectively abutted with the outer side surfaces of the first ferrite magnetic core Z1 and the second ferrite magnetic core Z2.
4. An information secrecy power socket comprises a power plug and a patch board, wherein the patch board is provided with the power socket, and the information secrecy power socket is characterized by comprising the power information secrecy device as claimed in any one of claims 1 to 3, the power information secrecy device is connected in series between a connecting wire of the power plug and the power socket on the patch board, an L wire of the connecting wire of the power plug is electrically connected with an L wire welding piece of a first power inlet wire connecting seat, and an N wire of the connecting wire of the power plug is electrically connected with an N wire welding piece of a second power inlet wire connecting seat; the L 'wire of the power socket on the patch board is electrically connected with the L' wire welding sheet of the first power output end connecting seat, and the N 'wire of the power socket on the patch board is electrically connected with the N' wire welding sheet of the second power output end connecting seat; the E line of the power plug connecting line and the E line of the power socket are electrically connected with the grounding connecting sheet on the outer wall of the electromagnetic shielding shell.
5. An information security power socket as claimed in claim 4, wherein the metal plug connector in the power socket is a face contact plug connector and/or a snap-lock plug connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222514404.5U CN218633880U (en) | 2022-09-22 | 2022-09-22 | Power information secrecy device and information secrecy power socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222514404.5U CN218633880U (en) | 2022-09-22 | 2022-09-22 | Power information secrecy device and information secrecy power socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633880U true CN218633880U (en) | 2023-03-14 |
Family
ID=85466385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222514404.5U Active CN218633880U (en) | 2022-09-22 | 2022-09-22 | Power information secrecy device and information secrecy power socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218633880U (en) |
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2022
- 2022-09-22 CN CN202222514404.5U patent/CN218633880U/en active Active
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