CN208926341U - A kind of gloves with pulse detection function - Google Patents
A kind of gloves with pulse detection function Download PDFInfo
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- CN208926341U CN208926341U CN201821067737.5U CN201821067737U CN208926341U CN 208926341 U CN208926341 U CN 208926341U CN 201821067737 U CN201821067737 U CN 201821067737U CN 208926341 U CN208926341 U CN 208926341U
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Abstract
The utility model is a kind of gloves with pulse detection function, including glove body, photoelectric sensing module is provided in the end of the fingerstall of the glove body, the photoelectric sensing module is connect by conducting wire with battery circuit module, the battery circuit module is connect with display screen signal, the battery circuit module is connect with switch control, the glove body includes glove interior layer and gloves outer layer, the battery circuit module is fixed between glove interior layer and gloves outer layer, and the display screen and switch are embedded on gloves outer layer；The photoelectric sensing module includes light emitting diode and phototriode, the light emitting diode is fixed on glove body fingerstall end upper inner surface, the phototriode is fixed on glove body fingerstall end lower inner surface, and the light emitting diode and phototriode are oppositely arranged.The device can realize the real-time counting of pulse to human body.
Description
Technical field
The utility model is to be related to field of electric control, specifically a kind of gloves with pulse detection function.
Background technique
With the development of the times, people's lives level improves, and the demand to daily necessity also starts to increase, and function is more
Sample, high in technological content article increasingly have been favored by people.Health-car gloves class product is exactly wherein important a series of.But
It is that health-related gloves are big multi-functional simple on the market, category is less, is unable to satisfy the diversified demand of people.Need a kind of tool
Have the gloves of pulse detection function, after wearing gloves can by built-in photoelectric sensor detect pulse, and by the back of the hand at
Display screen is checked, use when health monitoring and movement is very suitable for.And need sensor bulk small, it is low in energy consumption, it is only necessary to finger
Contact, safety and sanitation do not have any side effect to human body.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of gloves with pulse detection function, pass through infrared hair
Optical diode generates infrared radiation finger, and the reflection and decaying by finger tissue are by photosensitive three pole beside the position
Pipe receives transmitted light and is converted to electric signal, and phototriode output signal is shown after shaping pulse and counting by led
Screen is shown, can measure pulse rate in real time.
In order to solve the above technical problems, the technical solution adopted by the utility model is:
A kind of gloves with pulse detection function, it is characterized in that: including glove body, the end of the fingerstall of the glove body
Photoelectric sensing module is provided in portion, the photoelectric sensing module is connect by conducting wire with battery circuit module, the electricity
Pond circuit module is connect with display screen signal, and the battery circuit module is connect with switch control, and the glove body includes
Glove interior layer and gloves outer layer, the battery circuit module are fixed between glove interior layer and gloves outer layer, the display
Screen and switch are embedded on gloves outer layer；
The photoelectric sensing module includes light emitting diode and phototriode, and the light emitting diode is fixed on hand
Body fingerstall end upper inner surface, the phototriode are fixed on glove body fingerstall end lower inner surface, and described shines
Diode and phototriode are oppositely arranged；
The battery circuit module includes optical transmission circuit, optical receiving circuit, main control chip and battery, and the light connects
Receiving circuit includes that prime receives amplifying circuit, intermediate second-order filter circuit, rear class amplifying circuit, the optical transmission circuit and hair
Optical diode is connect by transmitting conducting wire connection, the optical transmission circuit with main control chip, and the phototriode passes through
Receiving wire receives amplifying circuit with prime and connect, and the prime receives amplifying circuit and is sequentially connected intermediate second-order filter electricity
Road, rear class amplifying circuit are connect with main control chip, and the signal output end of the main control chip is connect with display screen, the electricity
Pond can provide electricity for main control chip.
To optimize above-mentioned utility model, the concrete measure taken further include:
The main control chip is ATmega16 microcontroller, PD5 pin and the light emitting electricity of ATmega16 microcontroller
Road connection, the PA0 pin of ATmega16 microcontroller are connect with rear class amplifying circuit.
The PD5 pin of the Tmega16 microcontroller is connect with the one end resistance R1, the other end and triode of resistance R1
The connection of Q1 base stage, triode Q1 collector are connect with the one end resistance R2, and triode Q1 collector is connect with voltage-stabiliser tube one end, pressure stabilizing
Pipe other end ground connection, triode Q1 collector are connect with triode Q2 base stage, the emitter ground connection of triode Q1, and resistance R2 is another
End is connect with+5V power supply, and the resistance R2 other end is connect with infrared transmitting tube anode, the collection of infrared transmitting tube cathode and triode Q2
Electrode connection, the emitter of triode Q2 are connect with the one end resistance R3, the other end ground connection of resistance R3.
The infrared transmitting tube is red light emitting diodes of the launch wavelength range in 940nm range, three poles
Pipe Q1 and triode Q2 is the triode of NPN type.
The base stage of the phototriode is subjected to infrared signal, the emitter ground connection of phototriode, photosensitive three pole
The collector of pipe is connect with the one end resistance R4, and the other end of resistance R4 is connect with+5V power supply, the one end resistance R4 and the one end capacitor C1
Connection, the capacitor C1 other end and the one end resistance R5, the other end of resistance R5 are connect with transport and placing device T1 reverse input end, electricity
The other end of resistance R5 is connect with one end of resistance R7, and the other end of resistance R7 is connect with the output end of transport and placing device T1, resistance R5's
The other end is connect with the one end capacitor C2, and the other end of capacitor C2 is connect with the output end of transport and placing device T1, and transport and placing device T1's is in the same direction defeated
Enter end to connect with the one end resistance R6, resistance R6 other end ground connection；
The output end of transport and placing device T1 is connect with the one end resistance R8, and the other end of resistance R8 is connect with the one end capacitor C3, capacitor
The other end of C3 is grounded, and the other end of resistance R8 is connect with the one end resistance R9, and the other end and transport and placing device T2 of resistance R9 is reversely defeated
Enter end connection, the noninverting input of transport and placing device T2 is connect with the one end resistance R11, and resistance R11 other end ground connection, resistance R8's is another
End is connect with the one end resistance R10, and the resistance R10 other end is connect with the output end of transport and placing device T2, the other end and capacitor of resistance R9
One end of C4 connects, the output end connection of the other end transport and placing device T2 of capacitor C4；
The output end of transport and placing device T2 is connect with the one end resistance R14, and the resistance R14 other end is connect with the one end capacitor C5, capacitor
The other end of C5 is grounded, and the resistance R14 other end is connect with the noninverting input of transport and placing device T3, the reverse input end of transport and placing device T3 and
The connection of the one end resistance R12, resistance R12 other end ground connection, the reverse input end of transport and placing device T3 connect with the one end rheostat R13, become
The other end of resistance device R13 is connect with the output end of transport and placing device T3, the output end of transport and placing device T3 and the PA0 of ATmega16 microcontroller
Pin connection.
The transport and placing device T1, transport and placing device T2, transport and placing device T3 are the operational amplifier of model TL084.
The ATmega16 microcontroller is connect by usart serial ports with display screen signal.
The signal input part of the display screen and the tdo pin of ATmega16 microcontroller connect, ATmega16 is micro-
The tdi pin of controller and the signal output end of display screen connect.
When user wears gloves, it need to only turn on the power switch, the photoelectric sensor that index finger finger protrudes into gloves is referred to
In set, finger flicking is lived to the circuit board where phototriode, the technology of pulse counting can be carried out, display screen will be shown in real time
Show the situation of change of heart rate.After turning on the power switch, infrared light-emitting diode generates infrared radiation finger, by finger tissue
Reflection and decaying transmitted light is received by the phototriode beside the position and is converted to electric signal.Due to finger artery
Blood is in periodic pulsatile change during blood circulation, so he is also to become in periodically pulsing to the reflection and decaying of light
Change, the output signal of triode is enough to reflect the pulsatile change of arterial blood.Triode output signal passes through shaping pulse and counting
Afterwards, it is shown by led display screen, pulse rate can be measured in real time.
This kind has the beneficial effect that with what the gloves of pulse detection function can reach
First, being equipped with photoelectric sensing module in finger end can be realized pulse counting, and sensor bulk is small, conveniently sets
It sets, stable structure.
Second, the present apparatus uses ATmega16 as main control chip, and inside has the timer/counter of PWM function,
USART communication interface, A/D conversion module, interrupt source abundant are very suitable in the present apparatus want communication and electrical control
It asks.
Third, finger arterial blood are in periodic pulsatile change during blood circulation, pass through the meter in main control chip
Number function realizes pulse counting.
Detailed description of the invention
Fig. 1 is a kind of structure principle chart of the gloves with pulse detection function of the utility model.
Fig. 2 is that a kind of structure of gloves fingerstall end photoelectric sensing module with pulse detection function of the utility model is former
Reason figure.
Fig. 3 is a kind of structure principle chart of the gloves circuit structure with pulse detection function of the utility model.
Fig. 4 is a kind of structure principle chart of the gloves main control chip with pulse detection function of the utility model.
Fig. 5 is a kind of structure principle chart of the gloves optical transmission circuit with pulse detection function of the utility model.
Fig. 6 is a kind of structure principle chart of the gloves optical receiving circuit with pulse detection function of the utility model.
Marginal data: 1, gloves；2, battery circuit module；3, it switchs；4, display screen；5, photoelectric sensing module；6, conducting wire；
7, light emitting diode；8, phototriode；9, gloves outer layer；10, glove interior layer；11, emit conducting wire；12, receiving wire.
Specific embodiment
The utility model is further described below in conjunction with Figure of description and specific preferred embodiment.
As shown in Figure 1 and Figure 2, a kind of gloves with pulse detection function, it is characterized in that: include glove body 1, it is described
Photoelectric sensing module 5 is provided in the end of the fingerstall of glove body 1, the photoelectric sensing module 5 passes through conducting wire 6 and battery electricity
Road module 2 connects, and the battery circuit module 2 is connect with 4 signal of display screen, and the battery circuit module 2 and switch 3 are controlled
System connection, the glove body 1 include glove interior layer 10 and gloves outer layer 9, and the battery circuit module 2 is fixed in gloves
Between layer 10 and gloves outer layer 9, the display screen 4 and switch 3 are embedded on gloves outer layer 9；
The photoelectric sensing module 5 includes light emitting diode 7 and phototriode 8, and the light emitting diode 7 is fixed
In 1 fingerstall end upper inner surface of glove body, the phototriode 8 is fixed on 1 fingerstall end lower inner surface of glove body, described
Light emitting diode 7 and phototriode 8 be oppositely arranged.
As shown in figure 3, battery circuit module 2 includes optical transmission circuit, optical receiving circuit, main control chip and battery, it is described
Optical receiving circuit include that prime receives amplifying circuit, intermediate second-order filter circuit, rear class amplifying circuit, the light emitting electricity
Road is connect with light emitting diode 7 by emitting conducting wire 11, and the optical transmission circuit is connect with main control chip, and described photosensitive three
Pole pipe 8 receives amplifying circuit with prime by receiving wire 12 and connect, and the prime receives amplifying circuit and is sequentially connected centre
Second-order filter circuit, rear class amplifying circuit are connect with main control chip, and the signal output end and display screen 4 of the main control chip connect
It connects, the battery can provide electricity for main control chip.
In the present embodiment, when heartbeat, since finger is placed between light emitting diode 7 and phototriode 8
In light transmission path, the variation of blood degree of saturation will cause the intensity of light to change in blood vessel, therefore the beat with heartbeat
Corresponding, the electric current of light receiving tube also changes, this results in 8 output pulse signal of phototriode, will obtain later
Pulse signal is sent into optical receiving circuit to obtain well stable waveform, then accesses main control chip and carry out data processing, finally exists
Display waveform and enumeration data are carried out on display 4.
As shown in figure 4, main control chip is ATmega16 microcontroller, the internal timer/counting with PWM function
Device, USART communication interface, A/D conversion module, interrupt source abundant meet control and require.In ATmega16 microcontroller uses
Portion's 8MHz crystal oscillator, is the benchmark of single-chip microcontroller work, exports high frequency carrier by it, carry out A/D conversion, count etc..
As shown in figure 5, the PD5 pin of the Tmega16 microcontroller is connect with the one end resistance R1, resistance R1's is another
End is connect with triode Q1 base stage, and triode Q1 collector is connect with the one end resistance R2, triode Q1 collector and voltage-stabiliser tube one
End connection, voltage-stabiliser tube other end ground connection, triode Q1 collector are connect with triode Q2 base stage, and the emitter of triode Q1 connects
Ground, the resistance R2 other end are connect with+5V power supply, and the resistance R2 other end is connect with infrared transmitting tube anode, infrared transmitting tube cathode
It is connect with the collector of triode Q2, the emitter of triode Q2 is connect with the one end resistance R3, the other end ground connection of resistance R3.
In the present embodiment, red light emitting diodes using launch wavelength range in 940nm range, the pressure of light emitting diode
Drop is generally 1~1.5V, and operating current generally takes 10~20mA to be advisable, so choosing R3=200 Ω.Input termination
The PD5 stitch of Tmega16 microcontroller generates a high-frequency PWM wave using Tmega16 microcontroller, as carrier wave.Figure
Q1 and Q2 in 5 select the triode of NPN type, and when carrier wave is high level, Q1 conducting, the base stage of Q2 is pulled to ground, in this way
Q2 is not turned on, and infrared transmitting tube does not work, and infrared receiving tube does not have optical signal reception；Conversely, then there is optical signal reception.
As shown in fig. 6, optical receiving circuit includes that prime receives amplifying circuit, intermediate second-order filter circuit, rear class amplification electricity
Road.The PA0 stitch for the signal access Tmega16 microcontroller that conditioning circuit is obtained, then due to during beating, oxygen
The variation for closing hemoglobin absorption infrared light, leads to the voltage value variation of sampling, and such Tmega16 microcontroller is obtained with
Different voltages value, then Tmega16 microcontroller calculates the data received, is judged, and Pulse Rate per minute
It calculates, last and display waveform and Pulse Rate over the display.
Wherein, preamplifying circuit includes phototriode 8, and the base stage of the phototriode 8 is subjected to infrared letter
Number, the emitter ground connection of phototriode 8, the collector of phototriode 8 is connect with the one end resistance R4, the other end of resistance R4
It is connect with+5V power supply, the one end resistance R4 is connect with the one end capacitor C1, the capacitor C1 other end and the one end resistance R5, resistance
The other end of R5 is connect with transport and placing device T1 reverse input end, and the other end of resistance R5 is connect with one end of resistance R7, resistance R7's
The other end is connect with the output end of transport and placing device T1, and the other end of resistance R5 is connect with the one end capacitor C2, the other end of capacitor C2 with
The output end of transport and placing device T1 connects, and the noninverting input of transport and placing device T1 is connect with the one end resistance R6, resistance R6 other end ground connection.
Second-order filter circuit includes resistance R8, and the output end of transport and placing device T1 is connect with the one end resistance R8, and resistance R8's is another
End is connect with the one end capacitor C3, and the other end ground connection of capacitor C3, the other end of resistance R8 is connect with the one end resistance R9, resistance R9's
The other end is connect with transport and placing device T2 reverse input end, and the noninverting input of transport and placing device T2 is connect with the one end resistance R11, resistance R11
Other end ground connection, the other end of resistance R8 are connect with the one end resistance R10, and the output end of the resistance R10 other end and transport and placing device T2 connect
It connects, the other end of resistance R9 is connect with one end of capacitor C4, the output end connection of the other end transport and placing device T2 of capacitor C4.
Rear class amplifying circuit includes resistance R14, and the output end of transport and placing device T2 is connect with the one end resistance R14, and resistance R14 is another
End is connect with the one end capacitor C5, the other end ground connection of capacitor C5, and the noninverting input of the resistance R14 other end and transport and placing device T3 connect
It connects, the reverse input end of transport and placing device T3 is connect with the one end resistance R12, resistance R12 other end ground connection, the reversed input of transport and placing device T3
End is connect with the one end rheostat R13, and the other end of rheostat R13 is connect with the output end of transport and placing device T3, the output of transport and placing device T3
End is connect with the PA0 pin of ATmega16 microcontroller.
In the present embodiment, preamplifying circuit: electric signal is converted to when the light quantity signal of variation is transmitted through, is driven infrared
Reception pipe accesses the front stage circuits being made of blocking low pass inverting amplifier.The circuit can remove DC voltage, inhibit high frequency
Signal tentatively decays to 50Hz Hz noise, while preliminary amplification has been carried out to useful pulse signal.According toChoose R5=100k Ω, R7=1M Ω.Simultaneously to eliminate bias voltage, R6 is accessed between positive input terminal and ground, greatly
Small is R5 resistance value in parallel with R7, chooses 91k Ω.According toLow-end cut-off frequency is set as 0.5Hz, because R5 is 100k
Ω, so choosing C1=4.7 μ F.Low-end cut-off frequency is substantially in 0.3Hz.Low-pass filtering cutoff frequency is set as 20Hz, because of R7
=1M Ω, so choosing C2=6.8nF, cutoff frequency substantially 23Hz.
Second-order filter circuit: the circuit uses unlimited gain multiple feedback second-order low-pass filter circuit, and cutoff frequency f is arranged
=10Hz.R8, R9, R10 100k are selected according to method for normalizing, and acquires C3=4.7 μ F, C4=5.4nF.
Rear class amplifying circuit: rear class amplifying circuit uses positive variable-gain amplification circuit,If R11=
100k Ω, R12=1k Ω, R13 are the potentiometer that range is 10k Ω.C5 and R14 composition low-pass filtering, cutoff frequency 20Hz,
It is 1~11 according to formula gain ranging.
In the present embodiment, high frequency carrier is generated by the Timer/Counter of the PWM function built in Tmega16 microcontroller,
Waveform is accurate, reliably.By the conditioning of conditioning circuit, Tmega16 microcontroller obtains the data of pulse wave, utilizes the A/ of itself
The voltage value that sampling obtains can be converted to digital information, and digital information is carried out analytical calculation pulse by D conversion module
Number, ATmega16 microcontroller are connect by usart serial ports with 4 signal of display screen.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications without departing from the principle of the utility model,
It should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of gloves with pulse detection function, it is characterized in that: including glove body (1), the fingerstall of the glove body (1)
End in be provided with photoelectric sensing module (5), the photoelectric sensing module (5) passes through conducting wire (6) and battery circuit module
(2) it connects, the battery circuit module (2) is connect with display screen (4) signal, the battery circuit module (2) and switch
(3) control connection, the glove body (1) includes glove interior layer (10) and gloves outer layer (9), the battery circuit module
(2) it is fixed between glove interior layer (10) and gloves outer layer (9), the display screen (4) and switch (3) are embedded in gloves outer layer
(9) on；
The photoelectric sensing module (5) includes light emitting diode (7) and phototriode (8), the light emitting diode (7)
It is fixed on glove body (1) fingerstall end upper inner surface, the phototriode (8) is fixed under glove body (1) fingerstall end
Inner surface, the light emitting diode (7) and phototriode (8) are oppositely arranged；
The battery circuit module (2) includes optical transmission circuit, optical receiving circuit, main control chip and battery, and the light connects
Receiving circuit includes that prime receives amplifying circuit, intermediate second-order filter circuit, rear class amplifying circuit, the optical transmission circuit and hair
Optical diode (7) is connect by transmitting conducting wire (11) connection, the optical transmission circuit with main control chip, photosensitive three pole
Pipe (8) receives amplifying circuit by receiving wire (12) and prime and connect, during the prime reception amplifying circuit is sequentially connected
Between second-order filter circuit, rear class amplifying circuit connect with main control chip, the signal output end and display screen of the main control chip
(4) it connects, the battery can provide electricity for main control chip.
2. a kind of gloves with pulse detection function according to claim 1, it is characterised in that: the main control chip
PD5 pin for ATmega16 microcontroller, ATmega16 microcontroller is connect with optical transmission circuit, ATmega16 microcontroller
PA0 pin connect with rear class amplifying circuit.
3. a kind of gloves with pulse detection function according to claim 2, it is characterised in that: the Tmega16
The PD5 pin of microcontroller is connect with the one end resistance R1, and the other end of resistance R1 is connect with triode Q1 base stage, triode Q1 collection
Electrode is connect with the one end resistance R2, and triode Q1 collector is connect with voltage-stabiliser tube one end, voltage-stabiliser tube other end ground connection, triode Q1
Collector is connect with triode Q2 base stage, and the emitter ground connection of triode Q1, the resistance R2 other end is connect with+5V power supply, resistance
The R2 other end is connect with infrared transmitting tube anode, and infrared transmitting tube cathode is connect with the collector of triode Q2, triode Q2's
Emitter is connect with the one end resistance R3, the other end ground connection of resistance R3.
4. a kind of gloves with pulse detection function according to claim 3, it is characterised in that: the infrared emission
Pipe is launch wavelength range in the red light emitting diodes of 940nm range, and the triode Q1 and triode Q2 are NPN type
Triode.
5. a kind of gloves with pulse detection function according to claim 2, it is characterised in that: photosensitive three pole
The base stage for managing (8) is subjected to infrared signal, the emitter ground connection of phototriode (8), the collector and electricity of phototriode (8)
The connection of the one end R4 is hindered, the other end of resistance R4 is connect with+5V power supply, and the one end resistance R4 is connect with the one end capacitor C1, the electricity
Hold the C1 other end and the one end resistance R5, the other end of resistance R5 is connect with transport and placing device T1 reverse input end, the other end of resistance R5
It is connect with one end of resistance R7, the other end of resistance R7 is connect with the output end of transport and placing device T1, the other end and capacitor of resistance R5
The connection of the one end C2, the other end of capacitor C2 are connect with the output end of transport and placing device T1, the noninverting input and resistance R6 of transport and placing device T1
One end connection, resistance R6 other end ground connection；
The output end of transport and placing device T1 is connect with the one end resistance R8, and the other end of resistance R8 is connect with the one end capacitor C3, capacitor C3's
Other end ground connection, the other end of resistance R8 are connect with the one end resistance R9, the other end and transport and placing device T2 reverse input end of resistance R9
Connection, the noninverting input of transport and placing device T2 connect with the one end resistance R11, and the resistance R11 other end is grounded, the other end of resistance R8 and
The connection of the one end resistance R10, the resistance R10 other end are connect with the output end of transport and placing device T2, and the other end of resistance R9 is with capacitor C4's
One end connection, the output end connection of the other end transport and placing device T2 of capacitor C4；
The output end of transport and placing device T2 is connect with the one end resistance R14, and the resistance R14 other end is connect with the one end capacitor C5, capacitor C5's
Other end ground connection, the resistance R14 other end are connect with the noninverting input of transport and placing device T3, the reverse input end and resistance of transport and placing device T3
The connection of the one end R12, resistance R12 other end ground connection, the reverse input end of transport and placing device T3 are connect with the one end rheostat R13, rheostat
The other end of R13 is connect with the output end of transport and placing device T3, the output end of transport and placing device T3 and the PA0 pin of ATmega16 microcontroller
Connection.
6. a kind of gloves with pulse detection function according to claim 5, it is characterised in that: the transport and placing device
T1, transport and placing device T2, transport and placing device T3 are the operational amplifier of model TL084.
7. a kind of gloves with pulse detection function according to claim 2, it is characterised in that: the ATmega16
Microcontroller is connect by usart serial ports with display screen (4) signal.
8. a kind of gloves with pulse detection function according to claim 7, it is characterised in that: the display screen
(4) signal input part and the tdo pin of ATmega16 microcontroller connect, the tdi pin of ATmega16 microcontroller with
The signal output end of display screen (4) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821067737.5U CN208926341U (en) | 2018-07-06 | 2018-07-06 | A kind of gloves with pulse detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821067737.5U CN208926341U (en) | 2018-07-06 | 2018-07-06 | A kind of gloves with pulse detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208926341U true CN208926341U (en) | 2019-06-04 |
Family
ID=66715853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821067737.5U Active CN208926341U (en) | 2018-07-06 | 2018-07-06 | A kind of gloves with pulse detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208926341U (en) |
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2018
- 2018-07-06 CN CN201821067737.5U patent/CN208926341U/en active Active
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