CN207336711U - A kind of circuit board detecting frock - Google Patents
A kind of circuit board detecting frock Download PDFInfo
- Publication number
- CN207336711U CN207336711U CN201721243988.XU CN201721243988U CN207336711U CN 207336711 U CN207336711 U CN 207336711U CN 201721243988 U CN201721243988 U CN 201721243988U CN 207336711 U CN207336711 U CN 207336711U
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- circuit
- circuit board
- stepper motor
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- controller
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Abstract
The utility model discloses a kind of circuit board detecting frock, including stepper motor detection interface, waveform shaping circuit and controller；N number of pin of the stepper motor detection interface receives the N roads pulse signal of stepper motor driving circuit output respectively, sent after carrying out Shape correction by N roads waveform shaping circuit to controller, the controller is according to the sequential of the N roads pulse signal received generation failure detection result.The circuit board detecting frock of the utility model is connected to circuit board under test, without assembling stepper motor and wind turbine on circuit boards, you can fault detect task is completed to the stepper motor driving circuit on circuit board and fan drive circuit.The circuit board detecting tool structure of the utility model is simple, and operation is easy, is connected to circuit board to be detected; without assembling stepper motor on circuit boards; fault detect task can be completed to the stepper motor driving circuit on circuit board, protect controlled load, improve fault detection efficiency.
Description
Technical field
The utility model belongs to circuit board detecting frock technical field, is to be related to a kind of be used for circuit board specifically
On stepper motor driving circuit and fan drive circuit carry out fault detect device.
Background technology
Wiring board in electronic product（Circuit board）In production wire body after the completion of processing and fabricating, it is required on circuit board
Functions circuit carry out fault detect, with pick out certified products therein be put in storage or be transferred to next stage produce wire body into
The assembling or welding operation of the controlled load of row.
At present, the following two modes of fault detect generally use are carried out to the circuit board in production wire body：
One kind is manual detection mode.That is, by artificial subjective analysis by the way of manual measurement, circuit is judged
Plate whether there is failure.This detection mode operation is excessively complicated, and detection time is long and worker easily reports by mistake, causes the bad of product
Rate increases, and difficulty is brought to production and maintenance, and detection speed causes product of production line largely to overstock slowly, influences production effect
Rate.
Another kind is intelligent fixture detection mode.That is, the circuit board produced in wire body is connected to intelligent fixture, utilizes intelligence
Each functional circuit in energy frock control board drives the controlled load being connected with circuit board to open successively, controlled by observing
Whether the operation conditions of load, each functional circuit on decision circuitry plate are normal.Carried out by taking the master control borad in refrigerator product as an example
Illustrate, be usually all laid with for controlling the air door drive circuit of door opening or closing and being used on the master control borad of refrigerator
Control the fan drive circuit of wind turbine operating.Air door drive circuit and fan drive circuit on to refrigerator master control borad carry out event
Barrier detection when, it is necessary first to by drive air door switch stepper motor and wind turbine be connected to master control borad, i.e. respectively with it is described
Air door drive circuit and fan drive circuit are corresponded in connection；Then, by the processor communication on intelligent fixture and master control borad,
Instructed by processor output control to air door drive circuit and fan drive circuit, and then Driving Stepping Motor and wind turbine fortune
OK.If stepper motor and wind turbine run well, then it represents that the air door drive circuit and fan drive circuit on master control borad are normal；It is no
Then, judging it, there are failure.This traditional intelligent fixture detection mode, due to needing controlled load being connected to electricity to be measured
The fault detect task to circuit board could be completed on the plate of road, therefore is existed because board failure causes the wind of controlled load damage
Danger, then easily causes the problems such as controlled load loss rate increases, testing cost raises.
The content of the invention
The utility model proposes a kind of circuit board detecting frock for the stepper motor driving circuit on circuit board, without
Stepper motor is connected to circuit board, you can fault detect is carried out to the partial function circuit on circuit board, and is obtained accurately
Failure detection result.
In order to solve the above technical problems, the utility model is achieved using following technical scheme：
A kind of circuit board detecting frock, is laid with stepper motor driving circuit, the stepper motor on the circuit board
N road pulse signal of the drive circuit output for Driving Stepping Motor forward or reverse；Use is provided with the detecting tool
Detection module is driven in the motor that fault detect is carried out to the stepper motor driving circuit；The motor drives detection module bag
Include stepper motor detection interface, N roads waveform shaping circuit and controller；The stepper motor detection interface includes being used to receive institute
State N number of pin of N roads pulse signal；N number of pin of N roads waveform shaping circuit and stepper motor detection interface
Connect one to one, Shape correction is carried out respectively to N roads pulse signal；The controller receives the N roads after Shape correction
Pulse signal, and failure detection result is generated according to the sequential of the N roads pulse signal after Shape correction.
Preferably, stepper motor detection interface includes 4 pins for being used to receive the pulse signal, is sequentially the
One pin, second pin, the 3rd pin and the 4th pin；Bridging has the first electricity between first pin and second pin
Sense, being bridged between the 3rd pin and the 4th pin has the second inductance, and the winding in stepper motor is imitated using inductance, with
Transmission environment of the analog pulse signal in stepper motor, then obtains more accurate failure detection result.
A kind of preferred circuit as the waveform shaping circuit designs, and the utility model is whole per the waveform described all the way
Bleeder circuit, clamp circuit and current-limiting resistance are both provided with shape circuit, per the pulse signal described all the way via bleeder circuit
After decompression, clamp circuit are spacing, the controller is transmitted to by current-limiting resistance.
Preferably, the controller receives preferably by the corresponding connection in I/O mouthfuls of its N road N roads waveform shaping circuit
N roads pulse signal after waveform shaping circuit processing.
Preferably, the divider resistance of two series connection is preferably provided with the bleeder circuit, is connected to the stepper motor
Between the pin and ground that detect interface；It is preferably provided with the diodes of two positive series connection in the clamp circuit, two
Cathode connection DC power supply after Diode series, plus earth, intermediate node two divider resistances of connection of two diodes
Intermediate node, and the controller is connected by the current-limiting resistance.
In order to improve fault detection efficiency, multigroup motor driving detection mould can be set in the detecting tool
Block, is all connected with the controller, it is possible thereby to which multiple stepper motor driving circuits are carried out at the same time with fault detect, accelerates failure
Detection speed.
In order to make the circuit board detecting frock of the utility model without wind turbine is connected to circuit board, you can to circuit board
On fan drive circuit carry out fault detect, and obtain accurate testing result, the utility model is in the detecting tool
It is additionally provided with the wind turbine for carrying out fault detect to the fan drive circuit and drives detection module, it includes aerator supervision and connects
Mouth and relay；The aerator supervision interface includes two power pins and a feedback pin, described two power pins
For receiving the direct current supply for being used to drive wind turbine to operate of the fan drive circuit output, the feedback pin is used for institute
State fan drive circuit feedback pwm signal；The coil of the relay is connected to described two electricity of the aerator supervision interface
Between source pin, its normally opened contact is connected to the feedback pin and wherein the one of the controller of the aerator supervision interface
Between the pwm signal output pin of road.
Further, also it is parallel with diode at the both ends of the coil of the relay.
In order to improve fault detection efficiency, multigroup wind turbine driving detection mould can be set in the detecting tool
Block, multigroup wind turbine driving detection module can connect the pwm signal efferent duct of the controller by current-limiting resistance all the way
Foot, the fault detect task to multigroup wind turbine driving detection module is completed using the pwm signal all the way of controller output.
In order to allow wire body worker intuitively to see failure detection result, the utility model is gone back in the detecting tool
Display module is provided with, connects the controller, the controller generates failure code according to failure detection result, by described
Display module output display, to reduce rate of false alarm.
Compared with prior art, the advantages of the utility model and good effect is：The circuit board detecting work of the utility model
Assembling structure is simple, and operation is easy, circuit board to be detected is connected to, without assembling stepper motor and wind on circuit boards
Machine, you can fault detect task is completed to the stepper motor driving circuit on circuit board and fan drive circuit.Thus not only may be used
To evade the risk for causing stepper motor and wind turbine to be damaged because of board failure, controlled load is protected, reduces testing cost, and
Due to eliminating the assembly or disassembly step of controlled load, operating procedure is simplified, improves fault detection efficiency.This
Outside, the failure detected can be directly generated failure code and shown by the circuit board detecting frock of the utility model, thus
The professional knowledge requirement to fault detect personnel can be reduced, solves the problems, such as manually easily wrong report.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantage of the utility model
It will become clearer.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of the embodiment for the circuit board detecting frock that the utility model is proposed.
Embodiment
Specific embodiment of the present utility model is described in more detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the circuit board detecting frock of the present embodiment is mainly used for stepper motor and with speed feedback work(
The wind turbine of energy（Or fan）Drive circuit carry out fault detect, including motor driving detection module and wind turbine driving detection module
Two parts.Wherein, it is main that stepper motor detection interface J11 and waveform shaping circuit etc. are provided with motor drives detection module
Part, coordinates the controller MCU in detecting tool to realize that failure is examined to the stepper motor driving circuit on circuit board
Survey.The chief component such as aerator supervision interface J21 and relay K1 is provided with wind turbine drives detection module, described in cooperation
Controller MCU can complete the fault detect task to the fan drive circuit on circuit board.
All it is the multiplex pulse signal that is received according to it to control its rotating due to current stepper motor.These
Pulse signal is usually the pulse train of multichannel difference sequential, by varying the front and rear sequential of each road pulse train, you can is changed
The steering of stepper motor, realizes and rotates and reverse control to stepper motor.It is being laid with the circuit of stepper motor driving circuit
On plate, the interface for external stepper motor is often both provided with（Or stepper motor interface）, the driving stepper motor
Multiplex pulse signal of the circuit described in by the interface to stepper motor output, to realize the control to stepper motor.
In order on the premise of without using stepper motor, complete the fault detect to stepper motor driving circuit on circuit board
Task, the present embodiment sets stepper motor to detect interface J11 in motor drives detection module, for connecting the institute on circuit board
Stepper motor interface is stated, to receive the multiplex pulse signal of stepper motor driving circuit output, then, according to what is received
The multiplex pulse signal judges that the stepper motor driving circuit whether there is failure, is connected therefore without by stepper motor
To circuit board under test, you can complete fault detect task to the stepper motor driving circuit on circuit board, reach protection stepping electricity
Machine, the purpose for simplifying failure detection operations.
Specifically, multiple pins are provided with stepper motor detection interface J11, are respectively used to receive stepping electricity
Pulse signal that drive circuit exports, for Driving Stepping Motor forward or reverse.It is different types of in order to take into account
Stepper motor, the present embodiment preferably set 4 to be used to receive the pulse signal in stepper motor detection interface J11
Pin, is respectively the first pin c1, second pin c2, the 3rd pin c3 and the 4th pin c4, can at most receive 4 tunnel pulse letters
Number, it can meet the failure to a variety of stepper motor driving circuits such as four line stepper motor of two-phase, six lines of four phases, five line or four phases
Testing requirements.The present embodiment connects waveform shaping circuit all the way respectively on each pin c1-c4, for receiving
The waveform of the pulse signal arrived carries out Shape correction, to eliminate the interference that pulse signal introduces in transmitting procedure.At shaping
Pulse signal transmission after reason is to controller MCU progress sequential judgements, it is possible thereby to improve the accurate of failure detection result
Property.
As a kind of preferred circuit designing scheme of the waveform shaping circuit, the present embodiment connect each described in draw
Bleeder circuit, clamp circuit and current-limiting resistance are both provided with the waveform shaping circuit of foot c1-c4.To connect the waveform of pin c4
Illustrated exemplified by shaping circuit, as shown in Figure 1, multichannel divider resistance can be set in the bleeder circuit, for docking
The voltage magnitude of received pulse signal carries out partial pressure conversion, to meet reception requirements of the controller MCU to input signal.To set
Put and illustrate exemplified by two-way divider resistance R102, R104, after two-way divider resistance R102, R104 can connect, one end connects
It is connected to the pin c4 of stepper motor detection interface J11, other end ground connection, by the centre of two-way divider resistance R102, R104
Node is connected to clamp circuit, exports the pulse signal after partial pressure.Two positive series connection can be set in the clamp circuit
Diode D21, D22, the cathode of diode D21 is connected to a DC power supply, such as+5V DC power supplies, anode connection two
The cathode of pole pipe D22, and being connected with the intermediate node of divider resistance R102, R104, by the plus earth of diode D22, this
The voltage magnitude of pulse signal can be limited between 0-5V by sample.The intermediate node of two diodes D21, D22 are passed through into limit
Leakage resistance R103 is connected to controller MCU, such as the wherein all the way I/O mouthfuls of A2+ of connection controller MCU, by partial pressure, spacing place
Pulse signal transmission after reason is to the controller MCU.The controller MCU utilizes I/O mouthfuls of its four road A2+, A2-, B2+, B2-
Receive respectively by stepper motor detect interface J11 four pin c1-c4 introducings and respectively via 4 road waveform shaping circuits at
Manage tetra- road pulse signals of Hou.Wherein, divider resistance R105, R107, diode D23, D24 and current-limiting resistance R106 form connection
The waveform shaping circuit of pin c3；Divider resistance R108, R110, diode D25, D26 and current-limiting resistance R109 form connection and draw
The waveform shaping circuit of foot c2；Divider resistance R111, R113, diode D27, D28 and current-limiting resistance R112 form connection pin
The waveform shaping circuit of c1.The pulse signal that controller MCU judges to receive according to the sequential of the four road pulse signals received
Be for control stepper motor rotate forward pulse train, or for control stepper motor invert pulse train, and with it is to be measured
The control purpose that circuit board actually wants to reach is compared to pair, if unanimously, can determine that the stepper motor driving circuit on circuit board
Normally；If inconsistent, it can determine that the stepper motor driving circuit on circuit board there are failure, is then given birth to by controller MCU
Into failure detection result, such as failure code etc., passes through the display module P1 being connected with controller MCU（Such as charactron, liquid crystal
Screen etc.）Output display, makes failure detection result very clear, solves the problems, such as manually easily wrong report.
In order to further improve the accuracy of stepper motor driving circuit failure detection result, the present embodiment drives in motor
Two inductance L3, L4 are additionally provided with detection module, as shown in Figure 1.Wherein, the first inductance L4 is connected across stepper motor detection and connects
Between the first pin c1 and second pin c2 of mouth J11；What the second inductance L3 was connected across stepper motor detection interface J11 the 3rd draws
Between foot c3 and the 4th pin c4, pin c1, c2, c3, c4 sequentially arrange in stepper motor detection interface J11, utilize inductance
L3, L4 imitate two windings in stepper motor, and be connected to in stepper motor on two corresponding link positions of winding,
Thus can transmission environment of the analog pulse signal in stepper motor, the pulse signal that controller MCU is received more is connect
The pulse train received by master control borad is bordering in stepper motor, controller MCU is so more advantageous to and generates accurate failure inspection
Survey result.
Multigroup motor driving detection module can be set in the circuit board detecting frock of the present embodiment, for
Fault detect is carried out at the same time to the multi-path stepping motor drive circuit laid on circuit board, improves fault detection efficiency.Fig. 1 is shown
The situation of two groups of motors driving detection modules is laid with, wherein, J12 is that second group of motor drives stepping electricity in detection module
Machine testing interface, divider resistance R90/R92, R93/R95, R96/R98, R99/R101, diode D13/D14, D15/D16,
D17/D18, D19/D20 and current-limiting resistance R91, R94, R97, R100 form other four road waveform shaping circuit, are connected to
It is used for the another of the four pin c1-c4 and controller MCU of four road pulse signals of reception in No. second stepper motor detection interface J12
Outer four roads I/O mouthfuls between A1+, A1-, B1+, B1-, two inductance L1, L2 are connected across No. second stepper motor detection interface respectively
Between c3, c4 pin of J12 and between c1, c2 pin, to realize the fault detect to the second road stepper motor driving circuit.
The circuit board detecting frock of the present embodiment is applied in the production wire body of refrigerator master control borad, using in detecting tool
The two groups of motors driving detection module laid matches somebody with somebody hop controller MCU, one or two air door on refrigerator master control borad can be driven
Dynamic circuit carries out fault detect.
The present embodiment only by receive four road pulse signals motor driving detection module and its fault detection method exemplified by into
Go and illustrated, for the stepper motor driving circuit for needing to export other quantity pulse signal, this reality can be copied
The circuit and control flow design method for applying example are specifically designed, and the present embodiment is not limited in above citing.
The present embodiment is additionally provided with wind turbine driving detection module in the circuit board detecting frock, can replace band rotating speed
The wind turbine of feedback function completes the fault detect task to its drive circuit.
, can also be to wind turbine in addition to requiring to receive direct current supply for the wind turbine at present with speed feedback function
Drive circuit feeds back pwm signal all the way, by detecting the duty cycle of pwm signal, can calculate the current rotating speed of blowing machine.For
Fan drive circuit corresponding to such wind turbine, the present embodiment are provided with aerator supervision in the wind turbine drives detection module and connect
Mouth J21, is respectively two power pins d1, d3 and a feedback pin d2 as shown in Figure 1, specifically including three pins.Its
In, power pins d1, d3 are used for the direct current supply for receiving fan drive circuit output, connect between power pins d1, d3
The coil of relay K1 is connected to, the armature contact of relay K1 is connected to the wherein pwm signal efferent duct all the way of controller MCU
Between the feedback pin d2 of foot PWM1 and aerator supervision interface J21, when the fan drive circuit on circuit board under test can be normal
When exporting the direct current supply needed for wind turbine, the coil of relay K1 is powered, and controls its normally opened contact to be attracted, at this time controller MCU
The pwm signal of output sends to wind turbine via the normally opened contact of relay K1 and the feedback pin d2 of aerator supervision interface J21 and drives
Dynamic circuit, if fan drive circuit receives this pwm signal, judges that fan drive circuit is normal；Otherwise, judge wind turbine driving
Fault.
The present embodiment the both ends of the coil of the relay K1 can also further parallel diode D10, in relay
Can also further series limiting resistor between the pwm signal output pin PWM1 of normally opened contact and the controller MCU of K1
R83, to improve the stability of wind turbine driving detection module work.
Multigroup wind turbine driving detection module can be set in the circuit board detecting frock of the present embodiment, and Fig. 1, which is shown, to be set
Put the situation of three groups of wind turbine driving detection modules.Wherein, aerator supervision interface J22, relay K2 and diode D11 form second
Group wind turbine driving detection module；Aerator supervision interface J23, relay K3 and diode D12 form the 3rd group of wind turbine driving detection
Module；The normally opened contact of relay in three groups of wind turbine driving detection modules can be connected to via with current-limiting resistance R83 all the way
The same output pin PWM1 of pwm signal all the way of controller MCU, can meet three using the controller MCU pwm signals all the way exported
The fault detect requirement of a fan drive circuit.
It is of course also possible to any number of wind turbine driving detection module is laid in circuit board detecting frock, to meet not
Same testing requirement.Drive display module P1 to export failure detection result by the controller MCU in detecting tool, and detecting
To in the presence of faulty, failure code is shown, to indicate abort situation.
The circuit board detecting frock of the present embodiment can be to stepper motor driving circuit and fan drive circuit without outer
In the case of connecing stepper motor and wind turbine, fault detect task is completed, detection speed is fast, and rate of false alarm is low, substantially increases production
Efficiency.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model,
It should also belong to the protection scope of the utility model.
Claims (10)
1. a kind of circuit board detecting frock, is laid with stepper motor driving circuit on the circuit board, the stepper motor drives
Dynamic circuit output is used for the N roads pulse signal of Driving Stepping Motor forward or reverse；It is provided with and is used in the detecting tool
The motor that fault detect is carried out to the stepper motor driving circuit drives detection module；It is characterized in that, the motor driving
Detection module includes：
Stepper motor detects interface, it includes being used for the N number of pin for receiving N roads pulse signal；
N roads waveform shaping circuit, N number of pin of itself and the stepper motor detection interface connects one to one, to the N
Road pulse signal carries out Shape correction respectively；
Controller, it receives the N roads pulse signal after Shape correction, and according to the sequential of the N roads pulse signal after Shape correction
Generate failure detection result.
2. circuit board detecting frock according to claim 1, it is characterised in that the stepper motor detection interface includes 4
It is a to be used to receive the pin of the pulse signal, it is sequentially the first pin, second pin, the 3rd pin and the 4th pin；Institute
Stating bridging between the first pin and second pin has the first inductance, and being bridged between the 3rd pin and the 4th pin has second
Inductance.
3. circuit board detecting frock according to claim 1, it is characterised in that per the waveform shaping circuit described all the way
In include bleeder circuit, clamp circuit and current-limiting resistance, be depressured, clamp via bleeder circuit per the pulse signal all the way
After position circuit is spacing, the controller is transmitted to by current-limiting resistance.
4. circuit board detecting frock according to claim 3, it is characterised in that the controller is right by I/O mouthfuls of its N road
The N roads waveform shaping circuit should be connected, receives the N roads pulse signal after waveform shaping circuit processing.
5. circuit board detecting frock according to claim 3, it is characterised in that include two in the bleeder circuit
The divider resistance of series connection, is connected between the pin and ground of the stepper motor detection interface；In the clamp circuit
Include the diode of two positive series connection, cathode connects DC power supply, plus earth, two two poles after two Diode series
The intermediate node of pipe connects the intermediate node of two divider resistances, and connects the controller by the current-limiting resistance.
6. circuit board detecting frock according to any one of claim 1 to 5, it is characterised in that in the detecting tool
On be provided with multigroup motor driving detection module, be all connected with the controller.
7. circuit board detecting frock according to any one of claim 1 to 5, it is characterised in that on the circuit board
Fan drive circuit is additionally provided with, it exports direct current supply, for driving wind turbine to operate；
The wind turbine for carrying out fault detect to the fan drive circuit is additionally provided with the detecting tool and drives detection
Module, it includes：
Aerator supervision interface, it includes being used to receive two power supplys of the direct current supply of the fan drive circuit output and draws
Foot and a feedback pin being used for fan drive circuit feedback pwm signal；
Relay, its coil are connected between described two power pins of the aerator supervision interface, the connection of its normally opened contact
In the feedback pin and wherein all the way between pwm signal output pin of the controller of the aerator supervision interface.
8. circuit board detecting frock according to claim 7, it is characterised in that the relay coil both ends simultaneously
It is associated with diode.
9. circuit board detecting frock according to claim 7, it is characterised in that be provided with the detecting tool multigroup
The wind turbine driving detection module, multigroup wind turbine driving detection module connect the institute of the controller by current-limiting resistance all the way
State pwm signal output pin.
10. circuit board detecting frock according to any one of claim 1 to 5, it is characterised in that in the detecting tool
In be additionally provided with display module, connect the controller, the controller generates failure code according to failure detection result, passes through
The display module output display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243988.XU CN207336711U (en) | 2017-09-26 | 2017-09-26 | A kind of circuit board detecting frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243988.XU CN207336711U (en) | 2017-09-26 | 2017-09-26 | A kind of circuit board detecting frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207336711U true CN207336711U (en) | 2018-05-08 |
Family
ID=62369966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721243988.XU Withdrawn - After Issue CN207336711U (en) | 2017-09-26 | 2017-09-26 | A kind of circuit board detecting frock |
Country Status (1)
| Country | Link |
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| CN (1) | CN207336711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422253A (en) * | 2017-09-26 | 2017-12-01 | 慈萌瑶 | A kind of circuit board detection device |
-
2017
- 2017-09-26 CN CN201721243988.XU patent/CN207336711U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422253A (en) * | 2017-09-26 | 2017-12-01 | 慈萌瑶 | A kind of circuit board detection device |
| CN107422253B (en) * | 2017-09-26 | 2023-06-27 | 青岛海龙川电子有限公司 | Circuit board detection device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191114 Address after: 266108 Shandong Qingdao Chengyang District Liuting Street East flow Pavilion community ritual Yang Road South Patentee after: HILONGCHUAN CO.,LTD. Address before: 266108 Shandong city of Qingdao province Liuting East Industrial Park Chengyang District Qingdao Haili Electronics Co. Ltd. Patentee before: Ci Mengyao |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20230627 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20230627 |