CN210534935U - Door magnetic inductor - Google Patents
Door magnetic inductor Download PDFInfo
- Publication number
- CN210534935U CN210534935U CN201922231009.4U CN201922231009U CN210534935U CN 210534935 U CN210534935 U CN 210534935U CN 201922231009 U CN201922231009 U CN 201922231009U CN 210534935 U CN210534935 U CN 210534935U
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- magnet
- circuit board
- cover
- magnetic sensor
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- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000005389 magnetism Effects 0.000 claims description 40
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- 239000002390 adhesive tape Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000012785 packaging film Substances 0.000 claims description 2
- 229920006280 packaging film Polymers 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of door and window burglary prevention, in particular to a door magnetic sensor, which comprises a door magnetic main body, wherein the door magnetic main body comprises a door magnetic upper cover, a door magnetic lower cover and a circuit board, a controller MCU and a wireless radio frequency module are integrated on the circuit board, and the circuit board is fixedly connected with a travel detection switch, a binding reset switch and a spring needle; a sheet antenna is bonded on the upper cover of the door magnet, and an antenna spring needle contact end is arranged at the position of the antenna corresponding to the spring needle; a travel switch hole site is arranged above the lower door magnet cover, and the top end of the upper door magnet cover is fixedly connected with a reset button; the stroke detection switch and the binding reset switch are in signal connection with the input end of the controller MCU, the wireless radio frequency module is in signal connection with the output end of the controller MCU, and the antenna is in signal connection with the wireless radio frequency module. The utility model discloses can break away from at door magnetic switch AND gate, and trigger the warning when door magnetic switch does not produce the displacement with the permanent magnet to greatly reduce the volume of door magnetic body, make door magnetic inductor smaller and more exquisite.
Description
Technical Field
The utility model relates to a door, window theftproof technical field specifically disclose a door magnetic inductor.
Background
The household safety is always the focus of attention of people, and under the common condition, gangsters enter the room through doors, so that the household safety is particularly important for the alarm prevention of the doors. The electromagnetic switch is mainly composed of a door magnet and a permanent magnet, wherein the door magnet is arranged on the door, the permanent magnet is arranged on the door frame, and when the door magnet is separated from or close to the permanent magnet to a certain distance, the electromagnetic switch is switched on and off, so that the position change of an object is sensed, and whether the door is opened or not is judged.
Chinese patent publication No. CN206040525U discloses a door magnetic switch, this door magnetic switch includes the door magnetic body, the permanent magnet, the door magnetic body includes the treater, the tongue tube, wireless module, an antenna, wireless module is connected with the input of treater, wireless module and antenna connection, the input of treater with pair the key-type connection, can make the treater carry out communication with the central processing unit of outside distal end and pair through pairing the key-type connection, the tongue tube is provided with two, one of them tongue tube is in the edge outside the magnetic force influence scope of permanent magnet, wireless module, two tongue tubes are connected with the input of treater respectively, the output and the alarm of treater are connected, the alarm is connected with the pilot lamp, the treater, two tongue tubes, wireless module sets up in aluminum alloy main body shell, the permanent magnet sets up in aluminum alloy shell. The technical scheme can also have an anti-interference function on the basis of sending corresponding information to a user mobile phone or the Internet, and can ensure the ferromagnetism of the permanent magnet while giving an alarm and a notification more comprehensively.
The utility model discloses a door magnetic switch when door magnetic switch AND gate break away from, and door magnetic switch and permanent magnet do not produce the displacement, and the door can free switch and can not trigger the warning this moment.
SUMMERY OF THE UTILITY MODEL
For solving the door magnetic switch AND gate and break away from, and door magnetic switch and permanent magnet do not produce the displacement, the door can free switch and can not trigger the technical problem who reports to the police this moment, the utility model provides a door magnetic inductor.
The utility model discloses technical scheme as follows:
the door magnetic sensor comprises a door magnetic main body arranged on a door and a permanent magnet part arranged on a door frame, wherein the permanent magnet part comprises a permanent magnet shell and a permanent magnet inside the permanent magnet shell, and the permanent magnet shell comprises a permanent magnet upper cover and a permanent magnet lower cover; the door magnet main body comprises a door magnet shell and a circuit board inside the door magnet shell, and the door magnet shell comprises a door magnet upper cover and a door magnet lower cover;
the circuit board is integrated with a controller MCU and a wireless radio frequency module, and one side of the circuit board facing the door magnet lower cover is fixedly connected with a travel detection switch and a battery fixing seat from top to bottom in sequence; the battery fixing seat is provided with a button battery;
the binding reset switch is fixedly connected above the circuit board facing one side of the door magnet upper cover, and an indicator lamp is arranged on the circuit board; the edge position of the circuit board is fixedly connected with a magnetic sensor; a spring pin is fixedly arranged below the circuit board;
a sheet-shaped antenna is arranged between the circuit board and the door magnet upper cover and is adhered to the door magnet upper cover, and an antenna spring needle contact end is arranged at the position of the antenna corresponding to the spring needle;
a travel switch hole position for the travel detection switch to pass through is formed above the lower door magnet cover; the top end of the upper door magnet cover is fixedly connected with a reset key; a first through hole for the indicator lamp to pass through is formed in the position, corresponding to the indicator lamp, of the upper door magnet cover;
the magnetic sensor, the stroke detection switch and the binding reset switch are all in signal connection with the input end of the controller MCU, the indicator lamp and the wireless radio frequency module are in signal connection with the output end of the controller MCU, and the antenna is in signal connection with the wireless radio frequency module.
The working principle and the advantages of the scheme are as follows: the sheet antenna greatly reduces the space occupied by the original antenna part, thereby reducing the volume of the door magnet main body and enabling the door magnet inductor to be smaller; the spring needle belongs to one kind of connector, and the spring needle is a very meticulous probe, can reduce the weight of connector and the volume of outward appearance, can make the connector more meticulous pleasing to the eye.
In this scheme, the installation of door magnetism main part, travel detection switch on the circuit board passes through travel switch hole site laminating and installs on the door (door magnetism main part AND gate laminating this moment, travel detection switch is located between door magnetism main part AND gate, be in by the extruded state), under the effect of door AND gate magnetism main part, travel detection switch is in the normally closed state, when taking place to steal or when dropping, door magnetism main part AND gate breaks away from promptly, travel detection switch breaks away from the extrusion of door this moment, travel detection switch opens, controller MCU control wireless radio frequency module sends alarm signal to user terminal.
Furthermore, four corners of the upper cover of the door magnet are respectively provided with an integrally formed supporting rib.
Has the advantages that: the support ribs have a supporting function and are used for supporting the circuit board and preventing the circuit board from inclining in the installation process.
Further, a circuit board reference column is formed in the bottom of the door magnetism upper cover in an integrated mode, the circuit board corresponds No. two through holes are formed in the position of the circuit board reference column, the bottom fixedly connected with circuit board clamping and buckling positions of the door magnetism upper cover are formed, and the door magnetism upper cover is located two sides fixedly connected with circuit board clamping and buckling positions of the circuit board clamping and buckling positions.
Has the advantages that: in the circuit board installation process, the circuit board passes through No. two through-holes, wears to establish on the circuit board reference column, confirms the position of circuit board at the door magnetism upper cover. The circuit board buckle and the circuit board clamp position clamp the circuit board together, and the circuit board is fixed on the door magnet upper cover.
Furthermore, the two sides of the upper door magnet cover and the lower door magnet cover are respectively provided with a first buckle, and the two sides of the upper permanent magnet cover and the lower permanent magnet cover are respectively provided with a second buckle.
Has the advantages that: the door magnetism upper cover and door magnetism lower cover, permanent magnetism upper cover all adopt the buckle to be connected with the permanent magnetism lower cover, do not need the use of tools, and the installation of the door magnetism inductor of being convenient for is dismantled, and does not need the screw, lets permanent magnetism inductor outward appearance better.
Furthermore, the side of the door magnet lower cover corresponding to the first buckle is fixedly provided with an installation indication mark, and the side of the permanent magnet lower cover corresponding to the second buckle is fixedly provided with an installation indication mark.
Has the advantages that: the buckle is used for prompting the buckling position of the buckle of a user, and the user can conveniently and accurately align and install the buckle.
Further, the door magnetic sensor is respectively fixedly adhered to the door and the door frame by using double-sided adhesive tapes.
Has the advantages that: replace traditional screw fixation design, not only can not harm door, window, still the product is more pleasing to the eye, also makes things convenient for the installation and the removal of door magnetic inductor.
Furthermore, an integrally formed fixing column is arranged on the inner side of the door magnet upper cover, and the reset key is connected to the fixing column in a heat sealing mode.
Has the advantages that: the method of heat seal fixation is adopted, the firmness of installation of the reset key is enhanced, and the reset key is connected to the fixed column in a heat seal mode, so that the upper cover of the door magnet is prevented from being damaged.
Further, the door magnet shell and the permanent magnet shell are made of PC + ABS materials.
Has the advantages that: the PC + ABS material has the properties of heat resistance, impact resistance, processing fluidity and the like, is beneficial to the shape forming of the shell of the door magnetic sensor, is not easy to damage, has extremely weak physical and chemical properties and color change even under the illumination condition, prolongs the service life of the door magnetic sensor, and is light in material and reduces the weight of the door magnetic sensor.
Further, the door magnetism shell with the surface of permanent magnetism shell all adopts the fine grit surface, the door magnetism shell with the surface of permanent magnetism shell all is equipped with the line, and the line of upper cover and lower cover corresponds the setting.
Has the advantages that: the surface of the shell of the door magnetic inductor is treated by adopting fine abrasive sand, so that the surface of the shell of the door magnetic inductor becomes fine and smooth and is rich in halation, and fingerprints can be prevented from being stained on the door magnetic inductor. The line design has not only increased the pleasing to the eye of door magnetic inductor shell to the user can also play the effect of correcting the alignment of buckle position through adjusting well of upper and lower lid line.
Further, a plastic packaging film is arranged on the surface of the magnetic sensor.
Has the advantages that: the plastic package film is plastically packaged on the surface of the magnetic sensor, so that dust can be prevented, insulation can be realized, the plastic package film is conveniently mounted after being plastically packaged on the surface of the magnetic sensor, and the magnetic sensor is not easy to fall off from a circuit board.
Drawings
FIG. 1 is an exploded view of a door sensor according to a first embodiment of the door sensor;
FIG. 2 is an exploded view of a door sensor according to a first embodiment of the door sensor;
FIG. 3 is a schematic structural diagram of a door sensor cover according to a first embodiment of the door sensor;
fig. 4 is a schematic structural diagram of a door sensor body according to a first embodiment of the door sensor.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the door magnetism upper cover 1, reset button 2, antenna 3, circuit board 4, spring pin 5, magnetic force sensor 6, bind reset switch 7, pilot lamp 8, stroke detection switch 9, door magnetism lower cover 10, buckle 11, installation indicating mark 12, permanent magnetism upper cover 13, permanent magnet 14, permanent magnetism lower cover 15, circuit board buckle 16, one number through-hole 17, fixed column 18, stroke switch hole site 19, button cell 20, battery fixing base 21, antenna spring pin contact end 22, circuit board buckle position 23, circuit board reference column 24, No. two buckles 25, No. two through- holes 26, 27, line brace rod 28.
Example one
The door magnetic sensor comprises a door magnetic main body arranged on a door and a permanent magnet part arranged on a door frame, wherein the permanent magnet part comprises a permanent magnet shell and a permanent magnet 14 inside the permanent magnet shell, the permanent magnet shell comprises a permanent magnet upper cover 13 and a permanent magnet lower cover 15, the door magnetic main body comprises a door magnetic shell and a circuit board 4 inside the door magnetic shell, and the door magnetic shell comprises a door magnetic upper cover 1 and a door magnetic lower cover 10.
A wireless radio frequency module (not shown) and a controller MCU (not shown) are integrated on the circuit board 4, one side of the circuit board 4 facing the door magnet lower cover 10 is welded with a stroke detection switch 9 and a battery fixing seat 21 in sequence from top to bottom on the circuit board 4; the battery holder 21 is connected with a button battery 20 in a snap-fit manner.
In this embodiment, the radio frequency module (not shown) is an RF433 radio frequency module, and is composed of a single IC radio frequency front-end section produced by full digital technology and an AVR single chip microcomputer of ATMEL, and the micro transceiver capable of transmitting data signals at high speed performs packing, error detection and error correction processing on data transmitted wirelessly.
The circuit board 4 faces one side of the door magnet upper cover 1, a binding reset switch 7 is fixedly welded above the circuit board 4, and an indicator light 8 is welded on the circuit board 4; a magnetic sensor 6 is welded at the edge of the circuit board 4, and a plastic package film (not shown) is plastically packaged on the surface of the magnetic sensor 6; the spring needle 5 is bonded below the circuit board 4, in this embodiment, the spring needle 5 is a pogo pin spring needle, and in other embodiments, technicians may also use spring needles 5 of other models.
A sheet-shaped antenna 3 is arranged below the circuit board 4 and the door magnet upper cover 1, the antenna 3 is bonded with the door magnet upper cover 1 by adopting a double-sided adhesive tape, in the embodiment, a 433MHz FPC (flexible printed circuit) antenna is preferably selected as the antenna 3, the communication range is expanded, and in other embodiments, technicians can also adopt antennas 3 of other types. An antenna pogo pin contact end 22 is integrated in the antenna 3 at a position corresponding to the pogo pin 5.
A travel switch hole site 19 for the travel detection switch 9 to pass through is arranged above the door magnet lower cover 10; in the embodiment, two fixing columns 18 are integrally formed on the inner side of the upper door magnet cover 1, the reset key 2 is arranged at the top end of the upper door magnet cover 1, and the reset key 2 is connected to the fixing columns 18 in a heat sealing manner; a through hole 17 is arranged at the position of the door magnet upper cover 1 corresponding to the indicator light 8 for the indicator light 8 to pass through.
The magnetic sensor 6, the travel detection switch 9 and the binding reset switch 7 are all in signal connection with an input end of a controller MCU (not shown), the indicator light 8 and the wireless radio frequency module (not shown) are in signal connection with an output end of the controller MCU (not shown), and the antenna 3 is in signal connection with the wireless radio frequency module (not shown).
In this embodiment, when the door magnetic sensor is installed, the stroke detection switch 9 on the circuit board 4 is attached to the door through the stroke switch hole 19 (at this time, the door magnetic body is attached to the door, and the stroke detection switch 9 is located between the door magnetic body and the door and is in an extruded state), and under the action of the door and the door magnetic body, the stroke detection switch 9 is in a normally closed state. When the door magnetic sensor leaves the door, the travel detection switch 9 is turned on, and the controller MCU (not shown) receives a signal indicating that the travel detection switch 9 is turned on, and then gives an alarm to the user terminal through the antenna 3.
The shell of the door magnetic sensor is made of PC + ABS materials, so that the door magnetic sensor becomes lighter, and the service life of the shell of the door magnetic sensor is longer. The door sensor directly forms blanks of the door magnet upper cover 1, the door magnet lower cover 10, the permanent magnet upper cover 13 and the permanent magnet lower cover 15 through a plastic molding process, the width of the door magnet main body is set to twenty millimeters, and the width of the permanent magnet part is set to ten millimeters.
The bottom of door magnetism upper cover 1 is equipped with integrated into one piece's circuit board card and detains position 23, and door magnetism upper cover 1's bottom integrated into one piece has two circuit board buckles 16, and door magnetism upper cover 1 detains position 23 both sides at the circuit board card and still integrated into one piece has circuit board reference column 24. A second through hole 26 is formed in the circuit board 4 corresponding to the circuit board positioning column 24, and integrally formed supporting ribs 28 are respectively arranged at four corners of the door magnet upper cover 1.
In this embodiment, the second through hole 26 on the circuit board 4 passes through the circuit board positioning column 24, and supports the circuit board 4 through the supporting rib 28, and then the circuit board fastening position 23 and the circuit board fastening 16 fix the position of the circuit board 4, so as to stably fix the circuit board 4 on the door magnet upper cover 1.
Two first buckles 11 are respectively and integrally formed on the left side and the right side of the upper door magnet cover 1 and the lower door magnet cover 10, and one second buckle 25 is respectively and integrally formed on the upper permanent magnet cover 13 and the lower permanent magnet cover 15. The door magnet shell and the permanent magnet shell are fixedly connected in a buckling connection mode.
For the convenience of installation of a user, installation indication marks 12 are integrally formed on the side surfaces, corresponding to the first buckles 11, of the door magnet lower cover 10 and the permanent magnet lower cover 15, installation indication marks 12 are integrally formed on the side surfaces, corresponding to the second buckles 25, of the permanent magnet lower cover 15, and the installation indication marks 12 can be triangular, rectangular and the like.
In order to facilitate the replacement and the movement of the door magnet sensor, the door magnet main body and the permanent magnet part are respectively adhered and fixedly arranged on the door and the door frame by using 3M double faced adhesive tapes and also can be adhered to other openable parts such as the window frame and the like.
Example two
The difference from the first embodiment is that: the surface of door magnetism shell and permanent magnetism shell all adopts the fine grit surface, and the surface of door magnetism shell and permanent magnetism shell all is equipped with line 27, and line 27 on upper cover and the lower cover corresponds the setting. The fine frosted surface makes the shell of the door magnetic sensor more exquisite, rich in halation and not easy to leave fingerprints. Line 27 not only increases the aesthetic feeling for the outward appearance of door magnetism inductor, and moreover, line 27 is the sign is aimed at to the buckle that provides for the user, through adjusting door magnetism upper cover 1 and the lower cover 10 on line 27 the lowest, and a buckle 11 on door magnetism upper cover 1 and the door magnetism lower cover 10 aligns this moment to let the user aim at a buckle 11's position fast. In the same way, the lowest positions of the lines 27 on the permanent magnet upper cover 13 and the permanent magnet lower cover 15 are aligned, and the second fasteners 25 on the permanent magnet upper cover 13 and the permanent magnet lower cover 15 are aligned at the moment, so that a user can quickly align the positions of the second fasteners 25. Thereby facilitating the installation of the door magnetic sensor housing.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The door magnetic sensor comprises a door magnetic main body arranged on a door and a permanent magnet part arranged on a door frame, wherein the permanent magnet part comprises a permanent magnet shell and a permanent magnet inside the permanent magnet shell, and the permanent magnet shell comprises a permanent magnet upper cover and a permanent magnet lower cover; the door magnet main body comprises a door magnet shell and a circuit board inside the door magnet shell, and the door magnet shell comprises a door magnet upper cover and a door magnet lower cover; it is characterized in that the preparation method is characterized in that,
the circuit board is integrated with a controller MCU and a wireless radio frequency module, and one side of the circuit board facing the door magnet lower cover is fixedly connected with a travel detection switch and a battery fixing seat from top to bottom in sequence; the battery fixing seat is provided with a button battery;
the binding reset switch is fixedly connected above the circuit board facing one side of the door magnet upper cover, and an indicator lamp is arranged on the circuit board; the edge position of the circuit board is fixedly connected with a magnetic sensor; a spring pin is fixedly arranged below the circuit board;
a sheet-shaped antenna is arranged between the circuit board and the door magnet upper cover and is adhered to the door magnet shell, and an antenna spring needle contact end is arranged at the position of the antenna corresponding to the spring needle;
a travel switch hole position for the travel detection switch to pass through is formed above the lower door magnet cover; the top end of the upper door magnet cover is fixedly connected with a reset key; a first through hole for the indicator lamp to pass through is formed in the position, corresponding to the indicator lamp, of the upper door magnet cover;
the magnetic sensor, the stroke detection switch and the binding reset switch are all in signal connection with the input end of the controller MCU, the indicator lamp and the wireless radio frequency module are in signal connection with the output end of the controller MCU, and the antenna is in signal connection with the wireless radio frequency module.
2. The door magnetic sensor according to claim 1, wherein: and the four corners of the upper cover of the door magnet are respectively provided with an integrally formed supporting rib.
3. The door magnetic sensor according to claim 2, wherein: a circuit board positioning column is integrally formed at the bottom end of the door magnet upper cover, a second through hole is formed in the position of the circuit board positioning column corresponding to the circuit board, the bottom end fixedly connected with circuit board clamping positions of the door magnet upper cover are buckled, and the door magnet upper cover is arranged on the circuit board clamping positions and is fixedly connected with circuit board buckles at two sides of the circuit board clamping positions.
4. The door magnetic sensor according to claim 1, wherein: the two sides of the upper door magnet cover and the lower door magnet cover are respectively provided with a first buckle, and the two sides of the upper permanent magnet cover and the lower permanent magnet cover are respectively provided with a second buckle.
5. The door magnetic sensor according to claim 1, wherein: the side of door magnetism lower cover corresponding No. one buckle is fixed and is equipped with the installation indicating mark, and the side that the permanent magnetism lower cover corresponds No. two buckles is fixed and is equipped with the installation indicating mark.
6. The door magnetic sensor according to claim 1, wherein: the door magnetic sensor is respectively adhered and fixed on the door and the door frame by using double-sided adhesive tapes.
7. The door magnetic sensor according to claim 1, wherein: the inner side of the door magnet upper cover is provided with an integrally formed fixing column, and the reset key is connected to the fixing column in a heat sealing mode.
8. The door magnetic sensor according to claim 1, wherein: the door magnetic shell and the permanent magnetic shell are made of PC + ABS materials.
9. The door magnetic sensor according to claim 5, wherein: the door magnetism shell with the surface of permanent magnetism shell all adopts fine grit surface, the door magnetism shell with the surface of permanent magnetism shell all is equipped with the line, and the line of upper cover and lower cover corresponds the setting.
10. The door magnetic sensor according to claim 1, wherein: and a plastic packaging film is arranged on the surface of the magnetic sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922231009.4U CN210534935U (en) | 2019-12-12 | 2019-12-12 | Door magnetic inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922231009.4U CN210534935U (en) | 2019-12-12 | 2019-12-12 | Door magnetic inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210534935U true CN210534935U (en) | 2020-05-15 |
Family
ID=70609308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922231009.4U Expired - Fee Related CN210534935U (en) | 2019-12-12 | 2019-12-12 | Door magnetic inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210534935U (en) |
-
2019
- 2019-12-12 CN CN201922231009.4U patent/CN210534935U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 |
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| CF01 | Termination of patent right due to non-payment of annual fee |