CN207799390U - A kind of portable radiationless children's anti-loss device - Google Patents
A kind of portable radiationless children's anti-loss device Download PDFInfo
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- CN207799390U CN207799390U CN201721777536.XU CN201721777536U CN207799390U CN 207799390 U CN207799390 U CN 207799390U CN 201721777536 U CN201721777536 U CN 201721777536U CN 207799390 U CN207799390 U CN 207799390U
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Abstract
The utility model discloses a kind of portable radiationless children's anti-loss devices, including host and slave；The host is communicatively coupled with the slave by wireless data transmission；The host includes power management module, controller MCU, wireless communication module and alarm module；The power management module is connect with the controller MCU, the alarm module respectively；The controller MCU is connect with the wireless communication module, the alarm module respectively；The slave includes power management module, controller MCU, wireless communication module and indicating module；The power management module is connect with the controller MCU, the indicating module respectively；The controller MCU is connect with the wireless communication module, the indicating module respectively；The utility model has low-power consumption, radiationless, easy to carry；It can be reminded sound-light alarm in time when the distance between host and slave are more than alarming value, effectively balance the safety of children outside and free problem.
Description
Technical field
The utility model is related to arrive technical field of electronic communication, more particularly to a kind of portable radiationless children's anti-loss device.
Background technology
It is public all for the attention rate of children outside safety and day recently as the raising that people realize children's safety
Increase.When children the how mixed and disorderly place of supermarket, recreation ground et al. be easy to because parent carelessness and unsighted cause
Child loses.
Therefore, the prior art is defective, needs to improve.
Utility model content
The utility model provides a kind of portable radiationless children's anti-loss device, solution because parent carelessness and sight by
Resistance causes children to lose problem.
To solve the above problems, the technical scheme that the utility model is provided is as follows：
A kind of portable radiationless children's anti-loss device, including host and slave；The host passes through no line number with the slave
It is communicatively coupled according to transmission；The host includes power management module, controller MCU, wireless communication module and alarm module；
The power management module is connect with the controller MCU, the alarm module respectively；The controller MCU respectively with it is described
Wireless communication module, alarm module connection；The slave includes power management module, controller MCU, wireless communication module
And indicating module；The power management module is connect with the controller MCU, the indicating module respectively；The controller MCU
It is connect respectively with the wireless communication module, the indicating module.
Preferred technical solution, the power management module include power module and charge management module；The power supply mould
Block includes battery GB, switch SW, integrated circuit U1, resistance R1, resistance R3, capacitance C1, capacitance C2 and capacitance C4；The battery GB
Anode connect with the first end of the switch SW；The second end of the switch SW respectively with the first end of the resistance R1, institute
State the 1st terminal, the connection of the 3rd terminal of integrated circuit U1；The second end of the resistance R1 respectively with the first end of the resistance R3,
The first end of the capacitance C4 connects；The 5th terminal of the integrated circuit U1 respectively with the first end of the capacitance C1, the electricity
Hold the first end connection of C2；It is the cathode of the battery GB, the second end of the resistance R3, the second end of the capacitance C4, described
The 2nd terminal of integrated circuit U1, the second end of the capacitance C1, the second end of the capacitance C2 are grounded；The Charge Management
Module includes USB interface J1, integrated circuit U2, resistance R2, resistance R5, capacitance C3 and Light-emitting diode LED 2；The USB interface
The 1st terminal of J1 respectively with the 4th terminal of the integrated circuit U2, the first end of the capacitance C3, the light emitting diode
The anode connection of LED2；The 1st terminal of the integrated circuit U2 passes through the negative of the resistance R5 and the Light-emitting diode LED 2
Pole connects；The 5th terminal of the integrated circuit U2 is connect with the first end of the resistance R2；The 4th end of the USB interface J1
Son, the 5th terminal, the 2nd terminal of the integrated circuit U2, the second end of the resistance R2, the second end of the capacitance C3 connect
Ground.
Preferred technical solution, the controller MCU include integrated circuit U3 and capacitance C9；The 5th of the controller MCU
Terminal is connect with the first end of the first end of the capacitance C1, the capacitance C9 respectively；The 4th terminal of the controller MCU, institute
The second end for stating capacitance C9 is grounded；The 7th terminal of the controller MCU is connect with the second end of the resistance R1；The control
Device MCU processed is R7F0C802 microcontrollers.
Preferred technical solution, the wireless communication module include integrated circuit U4, integrated circuit U5, crystal oscillator Y,
Capacitance C5, capacitance C6, capacitance C7, capacitance C8, capacitance C10, capacitance C11, capacitance C12, capacitance C13, capacitance C14, resistance R8, electricity
Feel L1, inductance L2 and inductance L3；The first end of the capacitance C1 respectively with the first end of the capacitance C12, the capacitance C13
First end, the 7th terminal of the integrated circuit U5, the 15th terminal, the connection of the 18th terminal；The 19th terminal of the integrated circuit U5
It is connect with the first end of the capacitance C14；The 16th terminal of the integrated circuit U5 is connect with the first end of the resistance R8；Institute
The 9th terminal for stating integrated circuit U5 is connect with the 1st terminal of the first end of the capacitance C10, the crystal oscillator Y respectively；
The 10th terminal of the integrated circuit U5 connects with the 3rd terminal of the first end of the capacitance C11, the crystal oscillator Y respectively
It connects；The 12nd terminal of the integrated circuit U5 is connect with the first end of the second end of the inductance L2, the inductance L3 respectively；Institute
The 13rd terminal for stating integrated circuit U5 is connect with the first end of the first end of the inductance L2, the inductance L1 respectively；The collection
At circuit U 5 the 11st terminal respectively with the second end of the inductance L3, the first end of the capacitance C7, the capacitance C8
One end connects；The second end of the inductance L1 is connect with the first end of the capacitance C5；The second end of the capacitance C5 respectively with
The first end of the capacitance C6, the integrated circuit U4 connections；The second of the second end of the capacitance C12, the capacitance C13
End, the second end of the capacitance C14, the second end of the capacitance C6, the second end of the capacitance C7, the capacitance C8 second
It holds, the 2nd terminal, the resistance of the second end of the capacitance C10, the second end of the capacitance C11, the crystal oscillator Y
The second end of R8, the integrated circuit U5 the 8th terminal, the 14th terminal, the 17th terminal, the 20th terminal be grounded；It is described integrated
1st terminal of circuit U 5 is connect with the 6th terminal of the integrated circuit U3；The 2nd terminal of the integrated circuit U5 and the collection
It is connected at the 8th terminal of circuit U 3；The 3rd terminal of the integrated circuit U5 is connect with the 9th terminal of the integrated circuit U3；Institute
The 4th terminal for stating integrated circuit U5 is connect with the 10th terminal of the integrated circuit U3；The 5th terminal of the integrated circuit U5 with
The 3rd terminal of the integrated circuit U3 connects；2nd terminal of the 6th terminal and the integrated circuit U3 of the integrated circuit U5
Connection；The integrated circuit U4 is ceramic antenna AN9520；The model R7F0C80212ESP of the integrated circuit U5.
Preferred technical solution, the indicating module include resistance R9 and Light-emitting diode LED 3；The of the capacitance C1
One end is connect with the anode of the Light-emitting diode LED 3；The cathode of the Light-emitting diode LED 3 and the second of the resistance R9
End connection；The first end of the resistance R9 is connect with the 1st terminal of the integrated circuit U3.
Preferred technical solution, the alarm module include diode VD, triode VT, resistance R10 and buzzer BP；Institute
The anode for stating power supply GB is connect with the cathode of positive, the described diode VD of the buzzer BP respectively；The triode VT's
Collector is connect with the anode of the cathode of the buzzer BP, the diode VD respectively；The emitter of the triode VT connects
Ground；The base stage of the triode VT is connect by resistance R10 with the 1st terminal of the integrated circuit U3.
Preferred technical solution, the battery GB are single-unit lithium ion battery.
Preferred technical solution, the model MIC5205 of the integrated circuit U1；The model of the integrated circuit U2
QX4054。
Advantageous effect compared with the existing technology is that using the above scheme, the utility model uses wireless communication module, makes
With the ISM band of global open, there is low-power consumption, radiationless, easy to carry；When the distance between host and slave are more than alarm
It can be reminded sound-light alarm in time when value, effectively balance the safety of children outside and free problem.
Description of the drawings
Illustrate embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment or the prior art
The required attached drawing used is briefly described in description, it is clear that, the accompanying drawings in the following description is only the one of utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the portable radiationless children's anti-loss device structure principle chart of one kind of the utility model；
Fig. 2 is the portable radiationless children's anti-loss device power module circuit schematic of one kind of the utility model；
Fig. 3 is the portable radiationless children's anti-loss device charge management module circuit diagram of one kind of the utility model；
Fig. 4 is the portable radiationless children's anti-loss device controller MCU interface circuit schematic diagram of one kind of the utility model；
Fig. 5 is the portable radiationless children's anti-loss device wireless communication module circuit diagram of one kind of the utility model；
Fig. 6 is the portable radiationless children's anti-loss device indicating module circuit diagram of one kind of the utility model；
Fig. 7 is the portable radiationless children's anti-loss device alarm module circuitry schematic diagram of one kind of the utility model.
Specific implementation mode
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.Make to this on the contrary, purpose of providing these embodiments is
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term used in this specification " fixation ", " integrated molding ",
For illustrative purposes only, the similar unit of structure is to identical label in the figure for "left", "right" and similar statement
Mark.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.
As shown in figs. 1-7, one embodiment of the utility model is：
A kind of portable radiationless children's anti-loss device, including host and slave；The host passes through no line number with the slave
It is communicatively coupled according to transmission；The host includes power management module, controller MCU, wireless communication module and alarm module；
The power management module is connect with the controller MCU, the alarm module respectively；The controller MCU respectively with it is described
Wireless communication module, alarm module connection；The slave includes power management module, controller MCU, wireless communication module
And indicating module；The power management module is connect with the controller MCU, the indicating module respectively；The controller MCU
It is connect respectively with the wireless communication module, the indicating module.
Further, the power management module includes power module and charge management module；The power module includes electricity
Pond GB, switch SW, integrated circuit U1, resistance R1, resistance R3, capacitance C1, capacitance C2 and capacitance C4；The battery GB anode with
The first end of the switch SW connects；The second end of the switch SW respectively with the first end of the resistance R1, the integrated electricity
The 1st terminal of road U1, the connection of the 3rd terminal；The second end of the resistance R1 respectively with the first end of the resistance R3, the capacitance
The first end of C4 connects；The 5th terminal of the integrated circuit U1 respectively with the first end of the capacitance C1, the capacitance C2
One end connects；The cathode of the battery GB, the second end of the resistance R3, the second end of the capacitance C4, the integrated circuit
The 2nd terminal of U1, the second end of the capacitance C1, the second end of the capacitance C2 are grounded；The charge management module includes
USB interface J1, integrated circuit U2, resistance R2, resistance R5, capacitance C3 and Light-emitting diode LED 2；The 1st of the USB interface J1
Terminal respectively with the 4th terminal of the integrated circuit U2, the anode of the first end of the capacitance C3, the Light-emitting diode LED 2
Connection；The 1st terminal of the integrated circuit U2 is connect by the resistance R5 with the cathode of the Light-emitting diode LED 2；It is described
The 5th terminal of integrated circuit U2 is connect with the first end of the resistance R2；The 4th terminal of the USB interface J1, the 5th terminal, institute
The 2nd terminal of integrated circuit U2, the second end of the resistance R2, the second end of the capacitance C3 is stated to be grounded.
Further, the controller MCU includes integrated circuit U3 and capacitance C9；The 5th terminal of the controller MCU is distinguished
It is connect with the first end of the first end of the capacitance C1, the capacitance C9；The 4th terminal, the capacitance C9 of the controller MCU
Second end be grounded；The 7th terminal of the controller MCU is connect with the second end of the resistance R1；The controller MCU is
R7F0C802 microcontrollers.
Further, the wireless communication module include integrated circuit U4, integrated circuit U5, crystal oscillator Y, capacitance C5,
Capacitance C6, capacitance C7, capacitance C8, capacitance C10, capacitance C11, capacitance C12, capacitance C13, capacitance C14, resistance R8, inductance L1, electricity
Feel L2 and inductance L3；The first end of the capacitance C1 respectively with the first end of the capacitance C12, the first end of the capacitance C13,
The 7th terminal of the integrated circuit U5, the 15th terminal, the connection of the 18th terminal；The 19th terminal of the integrated circuit U5 with it is described
The first end of capacitance C14 connects；The 16th terminal of the integrated circuit U5 is connect with the first end of the resistance R8；It is described integrated
9th terminal of circuit U 5 is connect with the 1st terminal of the first end of the capacitance C10, the crystal oscillator Y respectively；The collection
It is connect respectively with the 3rd terminal of the first end of the capacitance C11, the crystal oscillator Y at the 10th terminal of circuit U 5；It is described
The 12nd terminal of integrated circuit U5 is connect with the first end of the second end of the inductance L2, the inductance L3 respectively；It is described integrated
13rd terminal of circuit U 5 is connect with the first end of the first end of the inductance L2, the inductance L1 respectively；The integrated circuit
The 11st terminal of U5 connects with the second end of the inductance L3, the first end of the capacitance C7, the first end of the capacitance C8 respectively
It connects；The second end of the inductance L1 is connect with the first end of the capacitance C5；The second end of the capacitance C5 respectively with the electricity
Hold the first end of C6, the integrated circuit U4 connections；It is the second end of the capacitance C12, the second end of the capacitance C13, described
It is the second end of capacitance C14, the second end of the capacitance C6, the second end of the capacitance C7, the second end of the capacitance C8, described
The second of the second end of capacitance C10, the second end of the capacitance C11, the 2nd terminal of the crystal oscillator Y, the resistance R8
It holds, the 8th terminal, the 14th terminal, the 17th terminal, the 20th terminal of the integrated circuit U5 are grounded；The integrated circuit U5's
1st terminal is connect with the 6th terminal of the integrated circuit U3；The 2nd terminal of the integrated circuit U5 and the integrated circuit U3
The 8th terminal connection；The 3rd terminal of the integrated circuit U5 is connect with the 9th terminal of the integrated circuit U3；The integrated electricity
The 4th terminal of road U5 is connect with the 10th terminal of the integrated circuit U3；The 5th terminal of the integrated circuit U5 is integrated with described
3rd terminal of circuit U 3 connects；The 6th terminal of the integrated circuit U5 is connect with the 2nd terminal of the integrated circuit U3；It is described
Integrated circuit U4 is ceramic antenna AN9520；The model R7F0C80212ESP of the integrated circuit U5.
Further, the indicating module includes resistance R9 and Light-emitting diode LED 3；The first end of the capacitance C1 and institute
State the anode connection of Light-emitting diode LED 3；The cathode of the Light-emitting diode LED 3 is connect with the second end of the resistance R9；
The first end of the resistance R9 is connect with the 1st terminal of the integrated circuit U3.
Further, the alarm module includes diode VD, triode VT, resistance R10 and buzzer BP；The power supply GB
Anode connect respectively with the cathode of positive, the described diode VD of the buzzer BP；The collector of the triode VT point
It is not connect with the anode of the cathode of the buzzer BP, the diode VD；The emitter of the triode VT is grounded；Described three
The base stage of pole pipe VT is connect by resistance R10 with the 1st terminal of the integrated circuit U3.
Further, the battery GB is single-unit lithium ion battery.
Further, the model MIC5205 of the integrated circuit U1；The model QX4054 of the integrated circuit U2.
The operation principle of the utility model is：
Host and slave switch are opened, after initialization is completed.Slave（Children wear）Started with frequency of once per second
2.4G wireless communication modules emit specific data bag data, while LED indicator lights are also with identical once per second frequency scintillation
Prompt is sent successfully；If host（Adult wears）Receive slave transmission resolve packet it is correct after not do any alarm dynamic
Make, when major-minor machine distance is more than alarm distance preset value, host sends out the buzzer warning sound of five times per second " serge " acoustic frequency；
When major-minor machine distance is in alarm distance preset value, host buzzer warning sound automatically terminates.
Host and slave are powered by single lithium battery, and have low-voltage warning function；Major-minor machine has easily
Micro-USB charging interfaces design.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record；Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations should all belong to the protection model of the appended claims for the utility model
It encloses.
Claims (8)
1. a kind of portable radiationless children's anti-loss device, it is characterised in that：Including host and slave；The host is logical with the slave
Wireless data transmission is crossed to be communicatively coupled；
The host includes power management module, controller MCU, wireless communication module and alarm module；The power management mould
Block is connect with the controller MCU, the alarm module respectively；The controller MCU respectively with the wireless communication module, institute
State alarm module connection；
The slave includes power management module, controller MCU, wireless communication module and indicating module；The power management mould
Block is connect with the controller MCU, the indicating module respectively；The controller MCU respectively with the wireless communication module, institute
State indicating module connection.
2. the portable radiationless children's anti-loss device of one kind according to claim 1, it is characterised in that：The power management module
Including power module and charge management module；
The power module includes battery GB, switch SW, integrated circuit U1, resistance R1, resistance R3, capacitance C1, capacitance C2 and electricity
Hold C4；The anode of the battery GB is connect with the first end of the switch SW；The second end of the switch SW respectively with the electricity
Hinder the first end of R1, the 1st terminal of the integrated circuit U1, the connection of the 3rd terminal；The second end of the resistance R1 respectively with it is described
The first end of resistance R3, the connection of the first end of the capacitance C4；The 5th terminal of the integrated circuit U1 respectively with the capacitance C1
First end, the first end of the capacitance C2 connection；The cathode of the battery GB, the second end of the resistance R3, the capacitance
The second end of C4, the 2nd terminal of the integrated circuit U1, the second end of the capacitance C1, the second end of the capacitance C2 connect
Ground；
The charge management module includes USB interface J1, integrated circuit U2, resistance R2, resistance R5, capacitance C3 and light emitting diode
LED2；The 1st terminal of the USB interface J1 respectively with the 4th terminal of the integrated circuit U2, the capacitance C3 first end,
The anode connection of the Light-emitting diode LED 2；The 1st terminal of the integrated circuit U2 is shone by the resistance R5 with described
The cathode of diode (LED) 2 connects；The 5th terminal of the integrated circuit U2 is connect with the first end of the resistance R2；The USB
The 4th terminal, the 5th terminal, the 2nd terminal of the integrated circuit U2, the second end of the resistance R2, the capacitance C3 of interface J1
Second end be grounded.
3. the portable radiationless children's anti-loss device of one kind according to claim 2, it is characterised in that：The controller MCU packets
Include integrated circuit U3 and capacitance C9；The 5th terminal of the controller MCU respectively with the first end of the capacitance C1, the capacitance
The first end of C9 connects；The 4th terminal of the controller MCU, the second end of the capacitance C9 are grounded；The controller MCU
The 7th terminal connect with the second end of the resistance R1；The controller MCU is R7F0C802 microcontrollers.
4. the portable radiationless children's anti-loss device of one kind according to claim 3, it is characterised in that：The wireless communication module
Including integrated circuit U4, integrated circuit U5, crystal oscillator Y, capacitance C5, capacitance C6, capacitance C7, capacitance C8, capacitance C10, electricity
Hold C11, capacitance C12, capacitance C13, capacitance C14, resistance R8, inductance L1, inductance L2 and inductance L3；The first end of the capacitance C1
Respectively with the first end of the capacitance C12, the first end of the capacitance C13, the 7th terminal of the integrated circuit U5, the 15th end
Son, the connection of the 18th terminal；The 19th terminal of the integrated circuit U5 is connect with the first end of the capacitance C14；The integrated electricity
The 16th terminal of road U5 is connect with the first end of the resistance R8；The 9th terminal of the integrated circuit U5 respectively with the capacitance
The 1st terminal connection of the first end of C10, the crystal oscillator Y；The 10th terminal of the integrated circuit U5 respectively with the electricity
Hold the first end of C11, the 3rd terminal connection of the crystal oscillator Y；The 12nd terminal of the integrated circuit U5 respectively with it is described
The second end of inductance L2, the connection of the first end of the inductance L3；The 13rd terminal of the integrated circuit U5 respectively with the inductance
The first end of L2, the connection of the first end of the inductance L1；The 11st terminal of the integrated circuit U5 is respectively with the inductance L3's
Second end, the first end of the capacitance C7, the connection of the first end of the capacitance C8；The second end of the inductance L1 and the capacitance
The first end of C5 connects；The second end of the capacitance C5 is connect with the first end of the capacitance C6, the integrated circuit U4 respectively；
The second of the second end of the capacitance C12, the second end of the capacitance C13, the second end of the capacitance C14, the capacitance C6
End, the second end of the capacitance C7, the second end of the capacitance C8, the second end of the capacitance C10, the capacitance C11
Two ends, the 2nd terminal of the crystal oscillator Y, the second end of the resistance R8, the 8th terminal of the integrated circuit U5, the 14th
Terminal, the 17th terminal, the 20th terminal are grounded；6th terminal of the 1st terminal and the integrated circuit U3 of the integrated circuit U5
Connection；The 2nd terminal of the integrated circuit U5 is connect with the 8th terminal of the integrated circuit U3；The 3rd of the integrated circuit U5
Terminal is connect with the 9th terminal of the integrated circuit U3；The of the 4th terminal of the integrated circuit U5 and the integrated circuit U3
10 terminals connect；The 5th terminal of the integrated circuit U5 is connect with the 3rd terminal of the integrated circuit U3；The integrated circuit
The 6th terminal of U5 is connect with the 2nd terminal of the integrated circuit U3；The integrated circuit U4 is ceramic antenna AN9520；It is described
The model R7F0C80212ESP of integrated circuit U5.
5. the portable radiationless children's anti-loss device of one kind according to claim 3, it is characterised in that：The indicating module includes
Resistance R9 and Light-emitting diode LED 3；The first end of the capacitance C1 is connect with the anode of the Light-emitting diode LED 3；It is described
The cathode of Light-emitting diode LED 3 is connect with the second end of the resistance R9；The first end of the resistance R9 and the integrated circuit
The 1st terminal of U3 connects.
6. the portable radiationless children's anti-loss device of one kind according to claim 3, it is characterised in that：The alarm module includes
Diode VD, triode VT, resistance R10 and buzzer BP；The power supply GB anode respectively with the anode of the buzzer BP,
The cathode of the diode VD connects；The collector of the triode VT respectively with the cathode of the buzzer BP, two pole
The anode connection of pipe VD；The emitter of the triode VT is grounded；The base stage of the triode VT passes through resistance R10 and the collection
It is connected at the 1st terminal of circuit U 3.
7. according to a kind of portable radiationless children's anti-loss device of claim 2-6 any one of them, it is characterised in that：The battery
GB is single-unit lithium ion battery.
8. the portable radiationless children's anti-loss device of one kind according to claim 2, it is characterised in that：The integrated circuit U1's
Model MIC5205；The model QX4054 of the integrated circuit U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721777536.XU CN207799390U (en) | 2017-12-19 | 2017-12-19 | A kind of portable radiationless children's anti-loss device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721777536.XU CN207799390U (en) | 2017-12-19 | 2017-12-19 | A kind of portable radiationless children's anti-loss device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207799390U true CN207799390U (en) | 2018-08-31 |
Family
ID=63281790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721777536.XU Expired - Fee Related CN207799390U (en) | 2017-12-19 | 2017-12-19 | A kind of portable radiationless children's anti-loss device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207799390U (en) |
-
2017
- 2017-12-19 CN CN201721777536.XU patent/CN207799390U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20191219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |