CN208401859U - It is embedded with the network equipment of network security hardware module - Google Patents
It is embedded with the network equipment of network security hardware module Download PDFInfo
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Abstract
The utility model discloses a kind of network equipments for being embedded with network security hardware module, including shell, network security hardware module and network equipment device are equipped in shell, network security hardware module includes CPU, crystal oscillator, memory, memory, external power supply, first linear voltage changer, second linear voltage converter, internal wiring translation circuit and internal switch power supply, crystal oscillator, memory and memory are connect with CPU, external power supply is connect with CPU, first linear voltage changer is connect with external power supply and CPU respectively, second linear voltage converter is connect with external power supply and CPU respectively, the inside of CPU is arranged in internal wiring translation circuit and internal switch power supply, CPU by reseting signal line and too net signal wire or usb signal line with The connection of network equipment device.The utility model can reduce that cost, installation is more convenient, management service is more convenient.
Description
Technical field
The utility model relates to communicating and network safety filed, in particular to a kind of network security hardware module that is embedded with
The network equipment.
Background technique
The network equipment currently on the market does not have security audit function mostly, and to realize security audit function, then necessary
In addition a set of safe design equipment is bought.Such way has the following deficiencies: that 1, equipment cost is higher, includes device Host, electricity
Source, cable and packaging material.2, installation is relatively difficult, needs separately to look for local installation, it is also necessary to alternating current be looked for be powered.3, management service
It is more troublesome, it need to safeguard two sets of equipment.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of energy reduction
Cost, the network equipment that installation is more convenient, management service is conveniently embedded with network security hardware module.
The technical scheme adopted by the utility model to solve the technical problem is as follows: constructing one kind is embedded with network security hardware
The network equipment of module, including shell, the shell is interior to be equipped with network security hardware module and network equipment device, the network
Secure hardware module includes CPU, crystal oscillator, memory, memory, external power supply, the first linear voltage changer,
Bilinear voltage changer, internal wiring translation circuit and internal switch power supply, the crystal oscillator, memory and memory are equal
It being connect with the CPU, the external power supply connect with the CPU, for powering for the CPU and memory, and described the
One linear voltage converter connect with the external power supply and CPU respectively, is used for the CPU and in-line power, described
Second linear voltage converter connect with the external power supply and CPU respectively, for the Power over Ethernet to the CPU,
The inside of the CPU is arranged in, for powering to the CPU in the internal wiring translation circuit, and the internal switch power supply is set
It sets in the inside of the CPU, for powering to the CPU, the CPU is connected by reseting signal line and the network equipment device
It connects, the CPU also passes through ethernet signal line or usb signal line and connect with the network equipment device.
In the network equipment described in the utility model for being embedded with network security hardware module, the external power supply
The supply voltage of offer is 3.3V, and 3.3V is converted to 1.8V, second linear voltage by the first linear voltage changer
3.3V is converted to 2V by converter, and 3.3V is converted to 2.5V by the internal wiring translation circuit, and the internal switch power supply will
3.3V is converted to 1.2V.
In the network equipment described in the utility model for being embedded with network security hardware module, it is additionally provided in the shell
The positive transmitting terminal of first capacitor, the 4th capacitor, the 5th capacitor and the 8th capacitor, the ethernet signal line of the CPU passes through institute
It states first capacitor to connect with the positive receiving end of the ethernet signal line of the network equipment device, the Ethernet letter of the CPU
The cathode receiving end that the cathode transmitting terminal of number line passes through the 4th capacitor and the ethernet signal line of the network equipment device
The positive receiving end of connection, the ethernet signal line of the CPU passes through the 5th capacitor and the network equipment device too
The positive transmitting terminal of net signal wire connects, the cathode receiving end of the ethernet signal line of the CPU by the 8th capacitor with
The cathode transmitting terminal of the too net signal wire of the network equipment device connects.
In the network equipment described in the utility model for being embedded with network security hardware module, it is additionally provided in the shell
DC power supply, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the 8th
Resistance, one end of the first resistor respectively with the positive transmitting terminal of the ethernet signal line of the CPU and first capacitor one
End connection, the other end of the first resistor are connect with one end of the DC power supply and 3rd resistor respectively, the third electricity
The other end of resistance is connect with one end of the cathode transmitting terminal of the ethernet signal line of the CPU and the 4th capacitor respectively, and described
One end of two resistance is received with the anode of the ethernet signal line of the other end of the first capacitor and network equipment device respectively
End connection, the other end of the second resistance are connect with one end of the 4th resistance and DC power supply respectively, the 4th electricity
The other end of the resistance cathode receiving end with the other end of the 4th capacitor and the ethernet signal line of network equipment device respectively
Connection, one end of the 5th resistance respectively with the positive receiving end of the ethernet signal line of the CPU and the 5th capacitor one
End connection, the other end of the 5th resistance are connect with one end of the DC power supply and the 7th resistance respectively, the 7th electricity
The other end of resistance is connect with one end of the cathode receiving end of the ethernet signal line of the CPU and the 8th capacitor respectively, and described
It is sent out respectively with the anode of the too net signal wire of the other end of the 5th capacitor and the network equipment device one end of six resistance
End connection is penetrated, the other end of the 6th resistance is connect with one end of the 8th resistance and DC power supply respectively, and the described 8th
The other end of resistance emits with the cathode of the other end of the 8th capacitor and the ethernet signal line of network equipment device respectively
End connection.
In the network equipment described in the utility model for being embedded with network security hardware module, it is additionally provided in the shell
One end of second capacitor, third capacitor, the 6th capacitor and the 7th capacitor, one end of second capacitor and the 4th resistance connects
It connecing, the other end of second capacitor ground connection, one end of the third capacitor is connect with one end of the 3rd resistor, and described the
The other end of three capacitors is grounded, and one end of the 6th capacitor is connect with one end of the 7th resistance, the 6th capacitor
Other end ground connection, one end of the 7th capacitor are connect with one end of the 8th resistance, another termination of the 7th capacitor
Ground.
In the network equipment described in the utility model for being embedded with network security hardware module, the usb signal line packet
Include USB_P signal wire and USB_N signal wire.
Implement the utility model the network equipment for being embedded with network security hardware module, have the advantages that by
In being equipped with network security hardware module and network equipment device in shell, network security hardware module includes CPU, crystal oscillation
Device, memory, memory, external power supply, the first linear voltage changer, the second linear voltage converter, internal wiring become
Circuit and internal switch power supply are changed, by the embedded network secure hardware module in legacy network equipment, by network security hardware
Module is mounted in the shell of legacy network equipment, is shared power supply and shell with legacy network equipment, is kept legacy network equipment
Increase security audit function under the premise of function is constant only needs to install which reduce materials such as shell, power supply adaptor and packaging materials
One equipment just meets the function of security audit and the network equipment simultaneously, only needs management service a set of equipment, thus can reduce at
Originally, installation is more convenient, management service is more convenient.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is that the utility model is embedded with the structural frames in network equipment one embodiment of network security hardware module
Figure；
Fig. 2 is the circuit theory schematic diagram that the network equipment of network security hardware module is embedded in the present embodiment；
Fig. 3 is the circuit diagram of CPU and crystal oscillator in the embodiment；
Fig. 4 is the circuit diagram of memory in the embodiment；
Fig. 5 is the circuit diagram of memory in the embodiment；
Fig. 6 is the circuit diagram of the first linear voltage changer in the embodiment；
Fig. 7 is the circuit diagram of the second linear voltage converter in the embodiment；
Fig. 8 is the circuit diagram of internal switch power supply in the embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the network equipment embodiment that the utility model is embedded with network security hardware module, it is embedded with network security
The structural block diagram of the network equipment of hardware module is as shown in Figure 1.In Fig. 1, which is set
Standby includes shell, is equipped with network security hardware module 1 and network equipment device 2 in shell, network security hardware module 1 includes
CPU U1, crystal oscillator Y2, memory 13, memory 14, external power supply 15, the first linear voltage changer 16, second
Linear voltage converter 17, internal wiring translation circuit 111 and internal switch power supply 112, wherein crystal oscillator Y2, storage
Device 13 and memory 14 are connect with CPU U1, and CPU U1 can use high pass CPU, model can using AR9331 or
QCA9531 etc., crystal oscillator Y2 are the passive crystal oscillator of 25MHz, and crystal oscillator Y2 provides this earthquake to CPU U1
Source is swung, as the inside PLL circuit of CPU U1 and the reference frequency of frequency converter.
Memory 13 is 6MByte memory, which is connected by spi bus with CPU U1, is used to store safety
The software of audit.When the network equipment for being embedded with network security hardware module powers on, when CPU U1 is to memory 13 1
Clock signal, then this memory 13 is chosen by CS chip selection signal, then by this two signal wires of MISO and MOSI to storage
Device 13 carries out read and write operation.
Memory 14 is 64MByte memory, as the caching of CPU U1, for the software of operational safety audit.CPU U1 is logical
Control signal wire is crossed to determine the being reading specific address that perhaps then write operation will be read or be write by address signal line determination,
Read and write operation is carried out to the address by data signal line again.
External power supply 15 is connect, for powering for CPU U1 and memory 13 with CPU U1, external power supply 15
The supply voltage of offer is 3.3V, and the first linear voltage changer 16 connect with external power supply 15 and CPU U1 respectively, uses
In giving CPU U1 and in-line power, 3.3V is converted to 1.8V by the first linear voltage changer 16, that is, 1.8V passes through first
Linear voltage converter 16 is converted by 3.3V.
Second linear voltage converter 17 connect with external power supply 15 and CPU U1 respectively, for CPU U1 with
3.3V is converted to 2V by too net power supply, the second linear voltage converter 17, that is, 2V passes through the second linear voltage converter 17
It is converted by 3.3V.
The inside of CPU U1 is arranged in, for powering to CPU U1 in internal wiring translation circuit 111, internal wiring transformation electricity
3.3V is converted to 2.5V by road 111, that is, 2.5V is converted by the internal wiring translation circuit 111 of CPU U1 by 3.3V
Come.
The inside of CPU U1 is arranged in, for powering to CPU U1 in internal switch power supply 112, and CPU U1 passes through reset signal
Line is connect with network equipment device 2, and CPU U1 also passes through ethernet signal line or usb signal line is connect with network equipment device 2,
Be in practical application selected according to the different network equipments ethernet signal line be connected or usb signal line be connected.
3.3V is converted to 1.2V by internal switch power supply 112, that is, 1.2V passes through the internal switch power supply 112 of CPU U1
It converts.As it can be seen that the network security hardware module 1 needs 3.3V, 2.5V, 1.8V, 1.2V and 2V voltage to power altogether.
The utility model is by the embedded network secure hardware module in legacy network equipment, by network security hardware module
It is mounted in the shell of legacy network equipment, shares power supply and shell with legacy network equipment, keep legacy network functions of the equipments
Increase security audit function under the premise of constant, which reduce the materials such as shell, power supply adaptor and packaging material, need to only install one
Equipment just meets the function of security audit and the network equipment simultaneously, only needs management service a set of equipment, therefore can reduce cost, peace
Fill that more convenient, management service is more convenient.In addition, being managed using the same cloud platform, manage relatively simple.
Fig. 2 is the circuit theory schematic diagram that the network equipment of network security hardware module is embedded in the present embodiment, Fig. 2
In, the Ethernet letter of first capacitor C1, the 4th capacitor C4, the 5th capacitor C5 and the 8th capacitor C8, CPU U1 are additionally provided in shell
The positive receiving end EX_ that the positive transmitting terminal TX+ of number line passes through first capacitor C1 and the ethernet signal line of network equipment device 2
RX+ connection, the cathode transmitting terminal TX- of the ethernet signal line of CPU U1 by the 4th capacitor C4 and network equipment device 2 with
The positive receiving end RX+ of the too cathode receiving end EX_RX- connection of net signal wire, the ethernet signal line of CPU U1 passes through the 5th
Capacitor C5 is connect with the positive transmitting terminal EX_TX+ of the too net signal wire of network equipment device 2, the ethernet signal line of CPU U1
Cathode receiving end RX- connected by the cathode transmitting terminal EX_TX- of the too net signal wire of the 8th capacitor C8 and network equipment device 2
It connects.First capacitor C1, the 4th capacitor C4, the 5th capacitor C5 and the 8th capacitor C8 are coupled capacitor, using capacity coupled side
Formula is avoided using network transformer, can greatly save cost and circuit board space.
DC power supply, first resistor R1, second resistance R2,3rd resistor R3, the 4th are additionally provided in the present embodiment, in shell
Resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8, the voltage that DC power supply provides are 2V,
In, one end of first resistor R1 respectively with the positive transmitting terminal TX+ of the ethernet signal line of CPU U1 and first capacitor C1 one
End connection, the other end of first resistor R1 are connect with one end of DC power supply and 3rd resistor R3 respectively, and 3rd resistor R3's is another
One end is connect with one end of the cathode transmitting terminal TX- of the ethernet signal line of CPUU1 and the 4th capacitor C4 respectively, second resistance R2
One end respectively with the positive receiving end EX_RX+ of the ethernet signal line of the other end of first capacitor C1 and network equipment device 2
Connection, the other end of second resistance R2 are connect with one end of the 4th resistance R4 and DC power supply respectively, and the 4th resistance R4's is another
End connects with the cathode receiving end EX_RX- of the other end of the 4th capacitor C4 and the ethernet signal line of network equipment device 2 respectively
Connect, one end of the 5th resistance R5 respectively with the positive receiving end RX+ of the ethernet signal line of CPU U1 and the 5th capacitor C5 one
End connection, the other end of the 5th resistance R5 are connect with one end of DC power supply and the 7th resistance R7 respectively, and the 7th resistance R7's is another
One end is connect with one end of the cathode receiving end RX- of the ethernet signal line of CPU U1 and the 8th capacitor C8 respectively, the 6th resistance
One end of R6 positive transmitting terminal EX_TX+ with the other end of the 5th capacitor C5 and the too net signal wire of network equipment device 2 respectively
Connection, the other end of the 6th resistance R6 are connect with one end of the 8th resistance R8 and DC power supply respectively, and the 8th resistance R8's is another
End is connect with the cathode transmitting terminal EX_TX- of the other end of the 8th capacitor C8 and the too net signal wire of network equipment device 2 respectively.
The physical layer for the voltage-type that the Ethernet of network security hardware module 1 uses needs to provide on ethernet signal line
Voltage.From figure 2 it can be seen that 2V voltage is connected to the ethernet signal of CPU U1 by first resistor R1 and 3rd resistor R3
On the cathode transmitting terminal TX- of the ethernet signal line of the positive transmitting terminal TX+ and CPU U1 of line；2V voltage passes through the 5th resistance R5
The ethernet signal line of the positive receiving end RX+ and CPU U1 of the ethernet signal line of CPU U1 are connected to the 7th resistance R7
On the RX- of cathode receiving end；2V voltage is believed by the Ethernet that second resistance R2 and the 4th resistance R4 are connected to network equipment device 2
On the cathode receiving end EX_RX- of the ethernet signal line of the positive receiving end EX_RX+ and network equipment device 2 of number line；2V electricity
Pressure is connected to the positive transmitting terminal EX_TX+ of the too net signal wire of network equipment device 2 by the 6th resistance R6 and the 8th resistance R8
On the cathode transmitting terminal EX_TX- of the ethernet signal line of network equipment device 2.
The second capacitor C2, third capacitor C3, the 6th capacitor C6 and the 7th capacitor C7 are additionally provided in the present embodiment, in shell,
Wherein, one end of the second capacitor C2 is connect with one end of the 4th resistance R4, the other end ground connection of the second capacitor C2, third capacitor C3
One end connect with one end of 3rd resistor R3, the other end of third capacitor C3 ground connection, one end of the 6th capacitor C6 and the 7th electricity
One end connection of R7, the other end ground connection of the 6th capacitor C6 are hindered, one end of the 7th capacitor C7 is connect with one end of the 8th resistance R8,
The other end of 7th capacitor C7 is grounded.Second capacitor C2, third capacitor C3, the 6th capacitor C6 and the 7th capacitor C7 play 2V voltage
To the effect of filtering.
Reset signal make network equipment device 2 can control network security hardware module 1 carry out reset restart.
When real work is run, the data run on network are issued net by ethernet signal line by network equipment device 2
Network secure hardware module 1, network security hardware module 1 carry out security audit to these data, pass through ether after the completion of audit again
Net signal wire is transmitted to network equipment device 2, and network equipment device 2 again passes to these results audited in cloud platform.
In Fig. 2, network security hardware module 1 is connected on network equipment device 2 by two signal lines of USB, i.e.,
USB_P signal wire and USB_N signal wire.Reset signal makes network equipment device 2 can control the progress of network security hardware module 1
Reset is restarted.
When real work is run, the data run on network are issued network peace by usb signal line by network equipment device 2
Devices at full hardware module 1, network security hardware module 1 carry out security audit to these data, pass through usb signal line after the completion of audit again
It is transmitted to network equipment device 2, network equipment device 2 again passes to these results audited in cloud platform.
Fig. 3 is the circuit diagram of CPU and crystal oscillator in the present embodiment；Fig. 4 is the electricity of memory in the present embodiment
Road schematic diagram；Fig. 5 is the circuit diagram of memory in the present embodiment；Fig. 6 is the first linear voltage changer in the present embodiment
Circuit diagram；Fig. 7 is the circuit diagram of the second linear voltage converter in the present embodiment；Fig. 8 is internal in the present embodiment
The circuit diagram of Switching Power Supply.
In short, the utility model is by the embedded network secure hardware module 1 in legacy network equipment, network security is hard
Part module 1 is mounted in the shell of legacy network equipment, shares power supply and shell with legacy network equipment, legacy network is kept to set
Increase security audit function under the premise of standby function is constant only needs to pacify which reduce materials such as shell, power supply adaptor and packaging materials
It fills an equipment just while meeting the function of security audit and the network equipment, only need management service a set of equipment, therefore can reduce
Cost, installation is more convenient, management service is more convenient.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of network equipment for being embedded with network security hardware module, which is characterized in that including shell, be equipped in the shell
Network security hardware module and network equipment device, the network security hardware module include CPU, crystal oscillator, memory,
Memory, external power supply, the first linear voltage changer, the second linear voltage converter, internal wiring translation circuit and interior
Portion's Switching Power Supply, the crystal oscillator, memory and memory are connect with the CPU, the external power supply with it is described
CPU connection is used to power for the CPU and memory, and the first linear voltage changer is electric with the external power supply respectively
Source connects with CPU, for the CPU and in-line power, the second linear voltage converter respectively with the external power supply
Power supply is connected with CPU, for the Power over Ethernet to the CPU, and the internal wiring translation circuit is arranged in the CPU
Portion is used to power to the CPU, and the inside of the CPU is arranged in, for powering to the CPU in the internal switch power supply, institute
It states CPU to connect by reseting signal line with the network equipment device, the CPU also passes through ethernet signal line or usb signal
Line is connect with the network equipment device.
2. the network equipment according to claim 1 for being embedded with network security hardware module, which is characterized in that described external
The supply voltage that power supply provides is 3.3V, and 3.3V is converted to 1.8V by the first linear voltage changer, described second
3.3V is converted to 2V by linear voltage converter, and 3.3V is converted to 2.5V by the internal wiring translation circuit, and the inside is opened
3.3V is converted to 1.2V by powered-down source.
3. the network equipment according to claim 2 for being embedded with network security hardware module, which is characterized in that the shell
Inside it is additionally provided with first capacitor, the 4th capacitor, the 5th capacitor and the 8th capacitor, the anode transmitting of the ethernet signal line of the CPU
End is connect by the first capacitor with the positive receiving end of the ethernet signal line of the network equipment device, the CPU's
The cathode transmitting terminal of ethernet signal line passes through the negative of the ethernet signal line of the 4th capacitor and the network equipment device
The positive receiving end of the connection of pole receiving end, the ethernet signal line of the CPU passes through the 5th capacitor and the network equipment
The positive transmitting terminal of the too net signal wire of device connects, and the cathode receiving end of the ethernet signal line of the CPU passes through described the
Eight capacitors are connect with the cathode transmitting terminal of the too net signal wire of the network equipment device.
4. the network equipment according to claim 3 for being embedded with network security hardware module, which is characterized in that the shell
Inside it is additionally provided with DC power supply, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th electricity
Resistance and the 8th resistance, one end of the first resistor positive transmitting terminal and first with the ethernet signal line of the CPU respectively
One end of capacitor connects, and the other end of the first resistor is connect with one end of the DC power supply and 3rd resistor respectively, institute
The other end for stating 3rd resistor connects with one end of the cathode transmitting terminal of the ethernet signal line of the CPU and the 4th capacitor respectively
Connect, one end of the second resistance respectively with the ethernet signal line of the other end of the first capacitor and network equipment device
Positive receiving end connection, the other end of the second resistance are connect with one end of the 4th resistance and DC power supply respectively, institute
The other end for stating the 4th resistance is negative with the ethernet signal line of the other end of the 4th capacitor and network equipment device respectively
The connection of pole receiving end, one end of the 5th resistance positive receiving end and the 5th with the ethernet signal line of the CPU respectively
One end of capacitor connects, and the other end of the 5th resistance is connect with one end of the DC power supply and the 7th resistance respectively, institute
The other end for stating the 7th resistance connects with the cathode receiving end of the ethernet signal line of the CPU and one end of the 8th capacitor respectively
It connects, one end of the 6th resistance too net signal wire with the other end of the 5th capacitor and the network equipment device respectively
The connection of positive transmitting terminal, the other end of the 6th resistance connect with one end of the 8th resistance and DC power supply respectively,
The other end of 8th resistance respectively with the ethernet signal line of the other end of the 8th capacitor and network equipment device
The connection of cathode transmitting terminal.
5. the network equipment according to claim 4 for being embedded with network security hardware module, which is characterized in that the shell
Inside it is additionally provided with the second capacitor, third capacitor, the 6th capacitor and the 7th capacitor, one end of second capacitor and the 4th resistance
One end connection, one end of the other end ground connection of second capacitor, one end of the third capacitor and the 3rd resistor connects
It connecing, the other end of third capacitor ground connection, one end of the 6th capacitor is connect with one end of the 7th resistance, and described the
The other end of six capacitors is grounded, and one end of the 7th capacitor is connect with one end of the 8th resistance, the 7th capacitor
Other end ground connection.
6. according to claim 1 to the network equipment for being embedded with network security hardware module described in 5 any one, feature exists
In the usb signal line includes USB_P signal wire and USB_N signal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821147179.3U CN208401859U (en) | 2018-07-19 | 2018-07-19 | It is embedded with the network equipment of network security hardware module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821147179.3U CN208401859U (en) | 2018-07-19 | 2018-07-19 | It is embedded with the network equipment of network security hardware module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208401859U true CN208401859U (en) | 2019-01-18 |
Family
ID=65128773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821147179.3U Active CN208401859U (en) | 2018-07-19 | 2018-07-19 | It is embedded with the network equipment of network security hardware module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208401859U (en) |
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2018
- 2018-07-19 CN CN201821147179.3U patent/CN208401859U/en active Active
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